JP6907013B2 - Work machine - Google Patents

Description

The present invention relates to, for example, a working machine provided with a filter that collects particulate matter contained in engine exhaust gas.

Conventionally, a working machine disclosed in Patent Document 1 is known.
The working machine disclosed in Patent Document 1 has a filter that collects particulate matter (PM: Particulate Matter) contained in the exhaust gas discharged from the prime mover. When the PM collected by the filter accumulates more than a certain amount, the filter regeneration is performed to burn and remove the PM.

Japanese Unexamined Patent Publication No. 2013-160056

For example, the administrator may want to perform filter regeneration by manual operation for simple maintenance, but in a conventional work machine, a manual switch for filter regeneration for simple maintenance performed by this administrator. Is not provided and cannot be reproduced.
Therefore, in view of the above problems, it is an object of the present invention to provide a working machine capable of performing filter regeneration for simple maintenance.

A filter that collects particulate matter contained in the exhaust gas discharged from the prime mover, a regeneration control unit that burns the particulate matter collected by the filter, and a regeneration control unit provided in the control unit and said that the regeneration control unit is described above. A permission switch for selecting whether or not to allow automatic regeneration that automatically burns particulate matter, and a switch different from the permission switch, which is provided and operated in the control unit. A second manual switch that instructs the regeneration control unit to burn the particulate matter, and a switch different from the permission switch and the second manual switch, which are provided and operated in the control unit. The regeneration control unit is provided with a first manual switch for instructing the regeneration control unit to burn the particulate matter, and the regeneration control unit has a first accumulation amount of the particulate matter collected by the filter. The automatic regeneration that automatically burns the particulate matter when it is equal to or greater than the threshold value and less than the second accumulation amount threshold that is larger than the first accumulation amount threshold, and the accumulation amount of the particulate matter collected by the filter. Auxiliary regeneration in which the particulate matter is manually burned when is equal to or greater than the first deposition amount threshold and less than the second accumulation amount threshold, and the accumulation amount of the particulate matter collected by the filter is the first. When the amount of accumulation is equal to or greater than the threshold value, manual regeneration is performed in which the particulate matter is burned by manual operation, the control unit has a driver's seat, and the permission switch and the second manual switch are the control unit. in, provided exposed as an operator seated in the driver's seat may be operated, the second manual switch is a switch for commanding the manual regeneration to the reproduction control unit, the first manual switch, the A switch that commands the reproduction control unit to perform auxiliary reproduction, the control unit is operably provided by an operator seated in the driver's seat, and is a covering member that covers only the first manual switch and can be opened and closed. It is covered with a covering member, and the time elapsed from the end of the automatic regeneration by the regeneration control unit is equal to or greater than the time threshold, and the amount of the particulate matter deposited is equal to or greater than the first accumulation amount threshold. It has a lamp that lights in an auxiliary reproducible state that is less than the amount threshold.
Further, the control unit has a display device provided around the driver's seat, and the permission switch, the first manual switch, and the second manual switch are arranged on the display device, and the covering member. Is composed of a blindfold member that hides the first manual switch.

Further, the permission switch, the first manual switch, and the second manual switch are arranged side by side on the display device.

The first manual switch, by at least two or more operations, Ri switch der commanding the combustion of the particulate matter, the cover member, that is formed of a transparent or translucent material.

According to the present invention, it is possible to regenerate the filter for simple maintenance performed by manual operation. Further, it is possible to prevent the operator who operates the work machine 1 from easily operating the first manual switch.

It is a figure which shows the structure of the exhaust system and the control system in 1st Embodiment. It is a graph which shows an example of the change of PM accumulation amount with respect to elapsed time. It is a figure which shows the display device. It is a flowchart which shows the regeneration operation of a DPF and the control of theft prevention. It is a figure which shows the other display device. It is sectional drawing of the 2nd manual switch and a cover. The rental system of the working machine in the second embodiment is shown. It is a figure which shows the structure of the exhaust system and the control system in 2nd Embodiment. It is a flowchart which shows the process of automatic reproduction and manual reproduction. It is a flowchart which shows the process of auxiliary reproduction and theft prevention. It is a figure which shows the structure of the exhaust system and the control system in the 1st modification. It is a flowchart which shows the process of auxiliary reproduction and theft prevention in the 1st modification. It is a figure which shows the structure of the exhaust system and the control system in the 2nd modification. It is a flowchart which shows the process of auxiliary reproduction and theft prevention in the 2nd modification. It is a figure which shows the schematic diagram of the 3rd modification. It is a plan view of the aircraft. It is sectional drawing of the rear part of the fuselage. It is a side view of a working machine.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
[First Embodiment]
FIG. 18 is a schematic side view showing the overall configuration of the work machine 1 according to the present embodiment. In the present embodiment, a backhoe, which is a swivel work machine, is exemplified as the work machine 1. The working machine 1 may be a construction machine such as a compact truck loader (CTL) or a skid steer loader (SSL) other than the backhoe, or an agricultural machine such as a tractor or a combine.

First, the overall configuration of the working machine 1 will be described with reference to FIGS. 16 to 18.
As shown in FIG. 18, the working machine 1 includes a machine body (swivel table) 2, a traveling device 3, and a working device 4. A cabin 5 is mounted on the aircraft 2. A driver's seat 6 is provided in the cabin 5.
In the present embodiment, the front side (direction of arrow A1 in FIG. 18) of the driver (operator) seated in the driver's seat 6 of the work machine 1 is in the front, and the rear side of the driver (direction of arrow A2 in FIG. 18) is in the rear. The left side of the driver (front side of FIG. 18) will be described as the left side, and the right side of the driver (back side of FIG. 18) will be described as the right side.

Further, the horizontal direction, which is a direction orthogonal to the front-rear direction K1, will be described as the body width direction. The direction from the central portion to the right portion or the left portion in the width direction of the airframe 2 will be described as the outer side of the airframe. In other words, the outer side of the machine body is the direction away from the center in the width direction of the machine body 2 in the body width direction. The direction opposite to the outside of the aircraft will be described as the inside of the aircraft. In other words, the inside of the machine is the direction in which the width of the machine is closer to the center of the width of the body 2.

As shown in FIG. 18, the traveling device 3 has a traveling body 3L provided on the left side and a traveling body 3R provided on the right side. The traveling body 3L and the traveling body 3R are crawler type traveling devices. A traveling motor is supported on the traveling bodies 3L and 3R. A dozer device 7 is attached to the front portion of the traveling device 3. The dozer device 7 can be raised and lowered (blades are raised and lowered) by expanding and contracting the dozer cylinder.

The machine body 2 is rotatably supported on the traveling device 3 via a swivel bearing 8 around a vertical axis (an axial center extending in the vertical direction). The machine body 2 is swiveled by a swivel motor including a hydraulic motor (hydraulic actuator). The airframe 2 includes a swivel board 9 that swivels around the vertical axis and
It has a weight of 10. The swivel substrate 9 is formed of a steel plate or the like and is connected to the swivel bearing 8. The weight 10 is provided at the rear of the machine body 2. The swivel board 9 constitutes a swivel frame together with reinforcing members, support members, and the like fixed on the swivel board 9, and the sides and front of the swivel frame are covered with a swivel cover 21. The rear of the swivel frame is covered with a weight 10.

The prime mover E1 is mounted on the rear part of the machine body 2. The prime mover E1 is a diesel engine. The prime mover E1 may be an electric motor, or may be a hybrid type having a diesel engine and an electric motor.
An exhaust gas purification device 31 and a hydraulic pump P1 are provided in the engine room E2 which is covered by the bonnet 11 and is formed inside the bonnet 11. Further, the engine room E2 is provided with a support frame 12 erected on the swivel board 9. The bonnet 11 is supported by the support frame 12. The bonnet 11 has an opening / closing cover 11a that opens / closes the engine room E2. The opening / closing cover 11a is supported by the support frame 12 so as to be swingable up and down via a hinge member 11b. As shown in FIG. 16, the position indicated by the reference numeral X1 is the closed position for closing the engine room E2, and the opening / closing cover 11a is swung upward from the closed position X1 to the opening position indicated by the reference numeral X2 to cause the engine room. Release E2.

As shown in FIG. 16, a radiator R1, an oil cooler O1, a hydraulic oil tank T1, a battery B1, a control valve V1 and the like are arranged on the swivel board 9 on the right side of the cabin 5. The radiator R1, the oil cooler O1, the hydraulic oil tank T1, the battery B1 and the control valve V1 are covered with a side cover 22. The side cover 22 has a hood 23 that can be opened and closed at the top.

That is, the machine body 2 is provided with drive devices such as a prime mover E1, a hydraulic pump P1, an exhaust gas purification device 31, a radiator R1, an oil cooler O1, a hydraulic oil tank T1, a battery B1, and a control valve V1. Is surrounded by a cover device such as a bonnet 11 and a side cover 22. The drive device provided on the machine body 2 is not limited to the above-mentioned example.

As shown in FIGS. 16 and 17, the airframe 2 has a support bracket 13 at the front portion slightly to the right of the center in the airframe width direction. As shown in FIG. 18, a swing bracket 14 is swingably attached to the support bracket 13 around the vertical axis. A working device 4 is attached to the swing bracket 14.
The working device 4 has a boom 15, an arm 16, and a bucket (working tool) 17. The base of the boom 15 is pivotally attached to the swing bracket 14 around a horizontal axis (an axial center extending in the width direction of the machine body). As a result, the boom 15 can swing up and down. The arm 16 is pivotally attached to the tip end side of the boom 15 so as to be rotatable around a horizontal axis. As a result, the arm 16 can swing back and forth or up and down. The bucket 17 is provided on the tip end side of the arm 16 so that it can perform a squeeze operation and a dump operation. The work machine 1 can be equipped with another work tool (spare attachment) that can be driven by a hydraulic actuator in place of or in addition to the bucket 17. Examples of other working tools (spare attachments) include a hydraulic breaker, a hydraulic crusher, an angle bloom, an earth auger, a pallet fork, a sweeper, a mower, and a snow blower.

The swing bracket 14 is made swingable by expanding and contracting a swing cylinder provided in the machine body 2. The boom 15 is swingable by expanding and contracting the boom cylinder C3. The arm 16 is swingable by expanding and contracting the arm cylinder C4. The bucket 17 is free to squeeze and dump by expanding and contracting the bucket cylinder (work tool cylinder) C5. The dozer cylinder, swing cylinder, boom cylinder C3, arm cylinder C4, and bucket cylinder C5 are composed of a hydraulic cylinder (hydraulic actuator).

Next, the control unit will be described.
As shown in FIG. 16, the work machine 1 is provided with a control unit 24 including a driver's seat 6. In this embodiment, the control unit 24 is provided in the space surrounded by the cabin 5, that is, in the cabin 5.
The control unit 24 is a portion around the driver's seat 6, and the operator seated in the driver's seat 6 is equipped with a machine, a device, an instrument, a member, or the like (for example, a prime mover E1, a machine body 2, a traveling device). 3. Includes parts where devices, members, etc. related to the operation of the work device 4 etc. are gathered.

The control unit 24 has a control device 19L provided on the left side of the driver's seat 6 and a control device 19R provided on the right side of the driver's seat 6. The control device 19L operates, for example, the airframe 2 and the arm 16. The control device 19R operates, for example, the boom 15 and the bucket 17. Further, the control unit 24 has a dozer operation member 25 arranged on the right side of the driver's seat 6. The dozer operating member 25 is a member that operates the dozer device 7.

Further, the control unit 24 has traveling operation members 54L and 54R, swing operation members 56, and SP operation members 57 provided in front of the driver's seat 6. The traveling operation member 54L is a member that operates the traveling body 3L. The traveling operation member 54L has a lever and a pedal, and the traveling body 3L can be operated by either the lever or the pedal. The traveling operation member 54R is a member that operates the traveling body 3R. The traveling operation member 54R also has a lever and a pedal, and the traveling body 3R can be operated by either the lever or the pedal. The swing operation member 56 is a member that operates the swing bracket 14. The SP operation member 57 is a member that operates a hydraulic attachment mounted instead of the bucket 17.

Further, the control unit 24 has a control box 26 provided with a key cylinder (ignition key cylinder) 62, switches and lamps. Further, the control unit 24 has an unload lever 27 provided on the left side of the driver's seat 6. The unload lever 27 is in a position that prevents the operator from getting off when the unload lever 27 is lowered. When the operator pulls up the unload lever 27 when getting off the work machine 1, the measuring device 19L swings upward together with the unload lever 27, and a passage for getting off and getting on is secured. When the unload lever 27 is pulled up, hydraulic oil is not supplied to the hydraulic actuator of the work device 4.

Further, the control unit 24 is a meter, a monitor, or the like provided around the driver's seat 6, and has a display device 29 for displaying various information (operating state of the work machine 1) regarding the work machine 1. The display device 29 is provided in front of the control device 19R.
As shown in FIG. 3, the display device 29 includes a liquid crystal panel 112, an LED display unit 113, and a second manual switch (manual switch) 58.

The liquid crystal panel 112 can freely display characters and figures by the liquid crystal display, and can freely change the characters and figures to be displayed. For example, on the left side of the liquid crystal panel 112, a fuel gauge indicating the remaining amount of fuel by a bar graph-shaped gauge is displayed, and the length of the gauge, that is, the length of the bar graph corresponds to the remaining amount of fuel. Further, on the right side of the liquid crystal panel, a water temperature gauge indicating the water temperature of the cooling water with a gauge is displayed, and the cursor indicating the current water temperature moves up and down according to the water temperature.

Further, in the central portion of the liquid crystal panel 112, character information for calling attention regarding DPF regeneration, which will be described later, and an icon 112a indicating that DPF regeneration is currently being performed are displayed. The type of information displayed on the liquid crystal panel 112 and the selection of display forms such as figures and characters are arbitrary.
The LED display unit 113 displays the detection information detected by the sensor or the like connected to the control device 46 (engine control device 32 and reproduction control device 33) by turning on, off, and blinking the LED element. Specifically, as the LED display unit 113, a warning LED display unit 113a indicating that some kind of warning has been issued, a hydraulic LED display unit 113b indicating an engine oil pressure warning, and a battery LED display unit 113c indicating a battery charge status warning. , A speed LED display unit 113d indicating a speed warning, an exhaust LED display unit indicating an exhaust temperature warning, and the like. The LED display unit 113 can freely change the display form not only by changing the lighting, extinguishing, and blinking, but also by changing the lighting time, the extinguishing time, the blinking interval, and the brightness at the time of lighting.

As shown in FIG. 1, the working machine 1 includes an exhaust gas purifying device 31. The exhaust gas purification device 31 is a device that purifies the exhaust gas discharged from the prime mover E1 and discharges it to the external environment. The exhaust gas purification device 31 has a filter 41. The filter 41 is a filter that collects particulate matter (PM) contained in exhaust gas, and is a diesel particulate filter (DPF). The DPF 41 is made of, for example, ceramic or metal and is formed so that the cross section has a honeycomb structure.

As shown in FIGS. 1 and 17, the DPF 41 is arranged above the prime mover E1 in the bonnet 11. A muffler 40 that reduces exhaust noise and an exhaust pipe 28 that guides exhaust gas to the outside of the bonnet 11 are connected to the exhaust side of the DPF 41. The exhaust gas that has passed through the DPF 41 is discharged above the bonnet 11 through the muffler 40 and the exhaust pipe 28. The DPF 41 is connected to the exhaust port 36 of the prime mover E1 via an exhaust manifold 30, which is a flow path for exhaust gas. The prime mover E1 is often a multi-cylinder engine having a plurality of cylinders (cylinders), and FIG. 1 shows the configuration of one of the cylinders 34.

The exhaust port 36 is an opening for discharging the combustion gas (gas after burning the fuel) from the cylinder 34. Further, an intake port 35 is formed in the cylinder 34. The intake port 35 is an opening for introducing air into the cylinder 34. An intake manifold 39, which is a flow path for air introduced into the cylinder 34, is connected to the intake port 35. Further, the cylinder 34 is provided with an intake valve 37 for opening and closing the intake port 35 and an exhaust valve 38 for opening and closing the exhaust port 36.

The exhaust gas discharged from the exhaust port 36 is discharged from the exhaust gas purification device 31 toward the muffler 40 after PM is collected by the DPF 41. DPF41 causes clogging when the accumulated amount of PM collected and accumulated (PM accumulated amount) increases. Therefore, the DPF 41 must be cleaned by appropriately burning PM so that the amount of PM deposited does not become too large. Combustion of the PM deposited on the DPF 41 is called "DPF regeneration (filter regeneration)". The DPF regeneration is performed by raising the temperature of the DPF 41 to a predetermined temperature or higher to burn the accumulated PM, gasify it, and discharge it into the environment together with the exhaust gas. DPF regeneration is performed, for example, by post-injection of fuel. The post injection is an operation of injecting fuel into the gas after combustion to promote the temperature rise of the DPF 13. The DPF regeneration may be performed, for example, by raising the exhaust temperature by throttle the intake throttle of the prime mover E1 (throttle of the intake throttle) and burning the PM. In addition to the DPF 41, the exhaust gas purification device 31 may have an oxidation catalyst for oxidizing the fuel in PM and the nitrogen oxides in the combustion gas, which is not shown.

The working machine 1 (exhaust gas purification device 31) can perform "automatic regeneration" and "manual regeneration" as DPF regeneration. Further, the working machine 1 (exhaust gas purification device 31) can perform "auxiliary regeneration" in addition to "automatic regeneration" and "manual regeneration".
The DPF regeneration will be described with reference to FIG.
FIG. 2 is a graph showing an example of a change in the PM accumulation amount with respect to the operating time (elapsed time). The horizontal axis shows the operating time, and the vertical axis shows the PM accumulation amount. FIG. 2 assumes a case where the PM deposition amount gradually increases immediately after the start of the prime mover E1.

In FIG. 2, the first deposition amount threshold value is a threshold value that serves as a boundary for distinguishing whether or not DPF regeneration is necessary (for example, the PM accumulation amount is about 40% of the DPF41 capacity). A level at which the PM deposition amount is less than the first deposition amount threshold value (level 0) is a level at which DPF regeneration is unnecessary.
When the PM deposition amount is equal to or higher than the first deposition amount threshold value, automatic regeneration, which is DPF regeneration that automatically burns PM, is performed. That is, the automatic regeneration is performed at a level (level 1) in which the PM deposit amount is equal to or more than the first deposit amount threshold value and less than the second deposit amount threshold value larger than the first deposit amount threshold value. The automatic regeneration is a DPF regeneration that is automatically performed, and post injection, throttle throttle, etc. are automatically performed regardless of the operator's intention, and the exhaust temperature rises.

When the PM accumulation amount is equal to or greater than the second accumulation amount threshold value, the DPF regeneration (manual regeneration) in which the PM is burned is possible at the will of the operator who operates the work machine 1. The second deposit threshold is a threshold that distinguishes whether or not to allow the operator to perform manual regeneration (for example, the PM deposit is about 60% of the DPF41 capacity). That is, the manual regeneration is a regeneration operation performed by the operator's will, and is a DPF regeneration that can be performed at a level (level 2) in which the PM deposition amount is equal to or higher than the second deposition amount threshold value.

In manual regeneration, processing for raising the exhaust temperature is performed by post injection, throttle throttle, or the like. Therefore, manual regeneration is performed under predetermined conditions. In other words, manual playback cannot be performed unless certain conditions are met. The predetermined condition is that at least the work machine 1 is parked. The conditions under which it can be confirmed that the work machine 1 is parked are, for example, that the traveling operation member is neutral, that the prime mover E1 is in an idling state, and that the work machine 1 is equipped with a parking brake. For example, the parking brake is in the braking (locked) state.

The auxiliary regeneration is a DPF regeneration different from the manual regeneration described above, and is a DPF regeneration executed when the PM deposition amount is equal to or greater than the first deposition amount threshold value. This auxiliary regeneration is a DPF regeneration that can be performed manually at level 1 where the PM deposition amount is equal to or higher than the first deposition amount threshold and less than the second deposition amount threshold. The above manual regeneration is a DPF regeneration performed by the operator who operates the work machine 1 (parked during the use of the work machine 1), whereas this auxiliary regeneration is performed by a person other than the operator (for example, rental). It is provided for the purpose of performing DPF regeneration for simple maintenance after or before using the work machine 1 by the manager of the work machine 1 of a company or the like. Also in this auxiliary regeneration, the engine speed is forcibly increased and the auxiliary regeneration is performed under the predetermined conditions described above.

The automatic regeneration, manual regeneration, and auxiliary regeneration are completed, for example, by performing the DPF regeneration for a predetermined time. The operating time of this DPF regeneration may vary depending on the amount of PM deposited or the amount of PM burned. As the deposit amount threshold value, a plurality of deposit amount threshold values having a value larger than the second deposit amount threshold value may be provided. The plurality of deposit thresholds are, for example, a threshold that strongly requires manual regeneration, a threshold that requires maintenance work by a maintenance shop, and the like.

The above-mentioned manual reproduction is executed by turning on the manual switch installed in the control unit 24, that is, the second manual switch 58 provided in the display device 29 which can be switched ON / OFF as shown in FIG. Can be done. The second manual switch 58 has a lamp such as an LED, and the lamp provided on the second manual switch 58 can be turned on, off, and blinking. For example, the lamp of the second manual switch 58 is turned off when the PM accumulation amount is level 0 and level 1, blinks when the PM accumulation amount reaches level 2, and the operator needs to manually regenerate. To urge. When the second manual switch 58 is turned on while the lamp of the second manual switch 58 is blinking, a second command signal to be described later is sent to the reproduction control device 33, and the lamp switches from blinking to lighting. When the manual regeneration is completed and the PM accumulation amount becomes less than level 2, the lamp of the second manual switch 58 is turned off.

Further, in the auxiliary reproduction, unlike the second manual switch 58, a manual switch installed at a position different from that of the control unit 24, that is, as shown in FIG. 17, the first manual switch 55 that can be switched on / off is turned on. It can be executed by setting.
The first manual switch 55 is, for example, a push button type switch, a seesaw type switch, or the like, and can be switched ON / OFF with a single operation. When the first manual switch 55 is a push button type, it is held ON when it is pressed once, and switched to OFF when it is pressed again from the ON state. Further, when the first manual switch 55 is a seesaw type, pressing the portion corresponding to ON holds the switch ON, and pressing the portion corresponding to OFF holds the switch 55 to OFF. That is, the first manual switch 55 can be switched ON / OFF by one operation.

In the above-described embodiment, the first manual switch 55 can be switched ON / OFF by one operation, but is switched from OFF to ON by at least two or more operations (a command for auxiliary reproduction is given. It may be a switch (which issues an auxiliary playback command from the state where it is not performed). For example, the first manual switch 55 may be a switch that turns from OFF to ON when a slide operation and a push operation are performed by combining a slide type and a push button type. Alternatively, the first manual switch 55 may be a push button type switch that turns from OFF to ON when the push operation is performed at least twice or more, or is pushed with a rotation operation (rotation operation) such as a rotary. It may be a switch that turns from OFF to ON when a rotation operation and a push operation are performed in combination with a button type, and the type of switch that operates by at least two or more operations is not limited.

Further, the first manual switch 55 may have a lamp such as an LED. In this case, the lamp provided on the first manual switch 55 can be turned on, off, and blinking.
As the place where the first manual switch 55 is provided, a position invisible to the operator seated in the driver's seat 6 or a position operated in the disembarked state can be considered. For example, the first manual switch 55 is provided inside a cover device such as the bonnet 11, the side cover 22, the hood 23, and the swivel cover described above. In this embodiment, as shown in FIG. 17, the first manual switch 55 is provided in the bonnet 11. That is, the first manual switch 55 is attached to the support frame 12 in the bonnet 11. When the first manual switch 55 is provided in the bonnet 11, it may be anywhere in the bonnet 11, but it is easily accessible with the opening / closing cover 11a open (for example, in the bonnet 11 and near the opening / closing cover 11a). ) Is preferable. The first manual switch 55 may be provided at a portion other than the inside of the bonnet 11.

Even when the first manual switch 55 is provided inside the side cover 22, it is preferable that the first manual switch 55 is provided in an easily accessible place (for example, a position near the hood 23 in the side cover 22). .. Further, in this case, the first manual switch 55 is preferably provided closer to the outer side of the machine body (on the right side in the illustrated example).
Further, as shown in FIG. 18, the first manual switch 55 may be provided inside the swivel cover 21. For example, the first manual switch 55 may be provided inside the opening / closing lid 57 provided on the side of the swivel cover 21. The opening / closing lid 57 is a lid that can open and close the opening provided in the swivel cover 21, and is a lid that closes the inspection opening for inspecting the equipment inside the machine body 2 and a tool storage portion provided inside the machine body 2. It is a lid that closes the opening for putting in and taking out tools.

Further, the first manual switch 55 is provided inside the tubular support column constituting the cabin 5, and an openable / closable lid is provided on the outer surface of the support column (outdoor surface of the cabin 5), and the cabin is opened by opening the lid. It may be accessible from the outside of the cabin 5 (outdoor of the cabin 5). In the state where the lid is closed, the first manual switch 55 cannot be visually recognized and cannot be operated. In other words, the first manual switch 55 may be provided inside the support column (space surrounded by the support column) of the cabin 5 at a position different from that of the control unit 24.

The display device 29 or the control unit 24 may be provided with a permission switch 59 and a reproduction lamp 60. The permission switch 59 is a switch that can be switched ON / OFF. The permission switch 59 has a lamp such as an LED, and the lamp can be turned on and off. The regeneration lamp 60 is turned off when the DPF regeneration is not performed, and is turned on when any of the automatic regeneration, the manual regeneration, and the auxiliary regeneration is performed.

As shown in FIG. 1, the exhaust gas purification device 31 has a first pressure sensor 42, a second pressure sensor 43, and a differential pressure sensor 44. The first pressure sensor 42 detects the exhaust pressure near the inlet of the DPF 41 on the inlet side (the side where the exhaust gas enters) of the DPF 41. The second pressure sensor 43 detects the exhaust pressure near the outlet on the outlet side (the side where the exhaust gas is discharged) of the DPF 41. The first pressure sensor 42 and the second pressure sensor 43 are pressure sensors composed of, for example, a piezoelectric element. The first pressure sensor 42 and the second pressure sensor 43 are connected to the differential pressure sensor 44.

The differential pressure sensor 44 detects the difference (differential pressure) in the exhaust pressure between the inlet side and the outlet side of the DPF 41 from the exhaust pressure detected by the first pressure sensor 42 and the exhaust pressure detected by the second pressure sensor 43. do. When there is no PM accumulation and no clogging in the DPF 41, the pressure loss due to the DPF 41 is very small, so that the difference in exhaust pressure detected by the first pressure sensor 42 and the second pressure sensor 43 is small, and the differential pressure sensor 44 The differential pressure detected by is also a small value. However, when PM accumulates on the DPF 41 and the degree of clogging increases, the pressure loss due to the DPF 41 increases, so that the differential pressure detected by the differential pressure sensor 44 also increases. Since the magnitude of the differential pressure corresponds to the degree of clogging of the DPF 41, the magnitude of the differential pressure can be converted into the degree of clogging of the DPF 41, that is, the amount of PM deposited in the DPF 41. Therefore, the PM deposit amount can be calculated by the first pressure sensor 42, the second pressure sensor 43, and the differential pressure sensor 44.

Further, the exhaust gas purification device 31 has a measuring device (temperature sensor) 45. The temperature sensor 45 is provided in the exhaust manifold 30 that connects the prime mover E1 and the DPF 41, and detects the temperature (exhaust temperature) of the combustion gas discharged from the prime mover E1 and heading toward the DPF 41. The temperature sensor 45 is composed of, for example, a thermistor.
The exhaust gas purification device 31 has a regeneration control device 33. A differential pressure sensor 44 and a temperature sensor 45 are connected to the reproduction control device 33. The differential pressure detected by the differential pressure sensor 44 and the exhaust temperature detected by the temperature sensor 45 are input to the reproduction control device 33. An engine control device 32 that controls the prime mover E1 is connected to the reproduction control device 33. In other words, the working machine 1 is provided with a control device 46 including a reproduction control device 33 and an engine control device 32. Further, a display device 29 and a first manual switch 55 are connected to the reproduction control device 33. That is, the reproduction control device 33 acquires the command signals from the first manual switch 55 and the second manual switch 58.

The engine control device 32 is composed of a CPU and the like, obtains information from sensors installed in various parts of the prime mover E1 and the power transmission system, and obtains information from the optimum fuel injection amount, injection timing, ignition timing, and idle according to the state of the prime mover E1. It calculates the number of rotations and issues a control command to the prime mover E1 and the like. For example, if the accelerator provided around the driver's seat 6 is operated (by operating the accelerator), the engine control device 32 detects the operation amount (opening degree) of the accelerator and increases the fuel injection amount and the like. In this way, the engine speed of the prime mover E1 can be increased.

The sensors that provide information to the engine control device 32 include an accelerator opening sensor that detects the accelerator opening, a differential pressure sensor 44 that detects the differential pressure of the exhaust gas purification device 31, a temperature sensor 45 that detects the exhaust temperature, and suction. An air flow meter for detecting the amount of air, a rotation sensor for detecting the rotation speed (engine rotation speed) of the prime mover E1, a water temperature sensor for detecting the temperature of the cooling water, and a throttle for detecting the opening degree of the valve. There are position sensors and so on. In addition to these, there are a cam position sensor for detecting the crank position, an oxygen concentration sensor for detecting the oxygen concentration in the intake air, and the like.

As shown in FIG. 1, the regeneration control device 33 is composed of a CPU and the like, and controls DPF regeneration. The regeneration control device 33 includes a regeneration control unit 47, a deposit amount acquisition unit 50, a notification unit 51, and a timing unit 56. The regeneration control unit 47, the accumulation amount acquisition unit 50, the notification unit 51, and the timing unit 56 are composed of electrical / electronic parts, a program stored in the regeneration control device 33, and the like.

The regeneration control unit 47 controls the combustion of the PM collected by the DPF (filter) 41. The deposit amount acquisition unit 50 acquires the PM deposit amount, and acquires the PM deposit amount by acquiring the differential pressure detected by the differential pressure sensor 44. For example, the accumulated amount acquisition unit 50 obtains information such as the differential pressure detected by the differential pressure sensor 44, the exhaust temperature detected by the temperature sensor 45, the water temperature of the cooling water, the oxygen concentration in the intake air, and the fuel injection amount. , PM deposit amount is calculated and obtained. In this embodiment, the differential pressure of the differential pressure sensor 44 is converted into the PM accumulated amount, but instead, the accumulated amount acquisition unit 50 may acquire the PM accumulated amount by a sensor or the like other than the differential pressure sensor 44. It is not limited to the above-described embodiment. The notification unit 51 notifies the outside or the like that auxiliary reproduction is possible. The timekeeping unit 56 is composed of a timer or the like, and measures the elapsed time. The reproduction control device 33 acquires a command signal from the first manual switch 55 and the second manual switch 58.

The reproduction control unit 47 includes a first reproduction control unit 52, a second reproduction control unit 53, and a third reproduction control unit 54. The first reproduction control unit 52, the second reproduction control unit 53, and the third reproduction control unit 54 are composed of electrical / electronic parts, a program of the reproduction control unit 47, and the like.
The first regeneration control unit 52 sends a command signal (first command signal) for automatic regeneration in response to the PM deposit amount acquired by the deposit amount acquisition unit 50 becoming equal to or higher than the first deposit amount threshold value, to the engine control device 32. Output to. The engine control device 32 receives a first command signal from the first regeneration control unit 52, issues a command such as post injection to the prime mover E1, and sets the temperature of the exhaust gas (exhaust temperature) by the post injection or the like, for example. , PM The combustion temperature is raised to 600 ° C. or higher. That is, the first regeneration control unit 52 automatically regenerates when the PM deposition amount collected by the filter 41 is equal to or greater than the first deposition amount threshold value.

The second reproduction control unit 53 outputs a command signal (second command signal) for manual reproduction in response to a command from the second manual switch 58 (manual switch) to the engine control device 32. The engine control device 32 receives a second command signal from the second regeneration control unit 53, issues a command such as post injection to the prime mover E1, and sets the exhaust gas temperature (exhaust temperature) to 600 ° C. by the post injection or the like. Raise it above. That is, the second regeneration control unit 53 performs manual regeneration in which the PM is burned by the command of the second manual switch 58 (manual switch) when the PM deposit amount is equal to or higher than the second deposit amount threshold value (level 2).

The third reproduction control unit 54 outputs a command signal (third command signal) for performing auxiliary reproduction in response to a command from the first manual switch 55 (manual switch) to the engine control device 32. The engine control device 32 receives a third command signal from the second regeneration control unit 53, issues a command such as post injection to the prime mover E1, and sets the exhaust gas temperature (exhaust temperature) to 600 ° C. by post injection or the like. Raise it above. That is, the third regeneration control unit 54 performs auxiliary regeneration for burning PM by the command of the first manual switch 55 (manual switch) when the PM deposition amount is equal to or more than the first accumulation amount threshold and less than the second accumulation amount threshold. ..

The notification unit 51 notifies that the time elapsed since the automatic regeneration by the first regeneration control unit 52 is completed is equal to or greater than the time threshold value and the PM accumulation amount is equal to or greater than the first accumulation amount threshold value and less than the second accumulation amount threshold value. The notification signal is output to the first manual switch 55, lamps, the liquid crystal panel 112, and the like. For example, when the auxiliary reproduction is possible, the notification unit 51 outputs a notification signal to the first manual switch 55 to blink the lamp of the first manual switch 55. In this case, for example, when the first manual switch 55 is operated (turned on), the lamp of the first manual switch changes from blinking to lit, and when the auxiliary reproduction ends, the lamp of the first manual switch goes out.

The timekeeping unit 54 can at least measure the time related to the DPF regeneration, and can measure the elapsed time from the time when the automatic regeneration ends, the time during which the automatic regeneration, the manual regeneration, the auxiliary reproduction, etc. are performed. Is.
Next, the flow of control of DPF regeneration will be described with reference to the flowchart shown in FIG.
As shown in FIG. 4, the regeneration control device 33 determines whether or not the PM deposit amount is equal to or higher than the first deposit amount threshold value (S1). When the PM deposit amount is equal to or higher than the first deposit amount threshold value (S1: Yes), the regeneration control device 33 proceeds to S2 and determines in S2 whether or not the PM deposit amount is equal to or higher than the second deposit amount threshold value. do.

When the regeneration control device 33 determines that the PM accumulation amount is less than the second accumulation amount threshold value (S2: No), it determines whether or not the conditions for automatic regeneration are satisfied (S3: determination of automatic regeneration conditions). The conditions for automatic regeneration are the engine speed, the water temperature, the exhaust temperature at the inlet of the DPF 41, the exhaust temperature at the outlet, and the like. In the reproduction control device 33, for example, the engine rotation speed is a predetermined rotation speed rpm or more (A1 rpm or more), the water temperature is a predetermined temperature or more (A2 ° C. or more), the exhaust temperature at the inlet of the DPF 41 is a predetermined temperature or more (A3 ° C. or more), and the DPF41 When the exhaust temperature at the outlet of is equal to or higher than a predetermined temperature (A4 ° C. or higher), it is determined that the conditions for automatic regeneration are satisfied (S3, Yes). The engine speed, water temperature, exhaust temperature at the inlet of the DPF 41, and exhaust temperature at the outlet of the DPF 41, which are the conditions for automatic regeneration, are set in advance in the regeneration control device 33.

As a condition for automatic reproduction, the permission switch 59 may be turned ON / OFF. When the permission switch 59 is ON, automatic playback is permitted, and when it is OFF, automatic playback is not permitted. In this case, in the automatic reproduction condition determination S3, when the permission switch 59 is ON, it is determined that the automatic reproduction conditions are satisfied. Further, the above-mentioned automatic regeneration condition is an example, and the above-mentioned numerical values and items (engine speed, water temperature, exhaust temperature at the inlet of the DPF 41, exhaust temperature at the outlet, ON / OFF of the permission switch 59) are not limited.

When the conditions for automatic regeneration are met (S3, Yes), the PM deposition amount is equal to or greater than the first accumulation amount threshold value and less than the second accumulation amount threshold value (level 1), so that the first regeneration control unit 52 automatically performs the PM accumulation amount. Playback takes place. At this time, the playback lamp 60 lights up (S5).
The reproduction control device 33 determines whether or not the automatic reproduction is completed (S6). When the automatic playback ends (S6: Yes), the playback lamp 60 goes out (S7). When the automatic reproduction is completed, the timing unit 56 measures the elapsed time from the end of the automatic reproduction.

On the other hand, when the conditions for automatic regeneration are not satisfied (S3, No), the regeneration control device 33 determines whether the PM deposit amount is equal to or more than the first deposit amount threshold value and less than the second deposit amount threshold value (level 1). Is determined (S8). When the PM deposit amount is less than the first deposit amount threshold value (level 0) or equal to or higher than the second deposit amount threshold value (level 2), the process returns to S1 (S8: No). When it is determined that the PM accumulation amount is level 1 (S8: Yes), the regeneration control device 33 determines whether the elapsed time measured by the timing unit 56 (the time elapsed since the end of automatic regeneration) is equal to or greater than the time threshold value. It is determined whether or not (S9). If the elapsed time is less than the time threshold value (S8: No), the reproduction control device 33 returns and does not proceed. At this time, even if the first manual switch 55 is operated, the auxiliary reproduction is not performed. That is, the auxiliary reproduction is not performed until a predetermined time has elapsed after the automatic reproduction is completed. This is because when DPF regeneration is repeated frequently, oil dilution (dilution of engine oil due to the fuel adhering to the inner wall surface of the cylinder of the prime mover E1 falling into the oil pan and mixed with the engine oil due to post injection). Is prevented from causing.

When a predetermined time elapses from the end of automatic regeneration (S9: Yes), that is, when it is determined that the PM accumulation amount is level 1 (S9: Yes), it is notified that the PM accumulation amount is level 1. The unit 51 notifies (S10). As a result, the operator is notified that a predetermined time has passed since the automatic regeneration is completed and the PM accumulation amount is level 1, that is, the auxiliary regeneration is possible.

Whether or not the reproduction control device 33 operates the first manual switch 55 while the notification unit 51 notifies that the auxiliary reproduction is possible (whether or not the first manual switch 55 is switched from OFF to ON). Is it determined (S11). When the first manual switch 55 is OFF, the process returns to S1 (S11: No). When the first manual switch 55 is ON (S11: Yes), a command signal is sent from the first manual switch 55 to the reproduction control unit 47, and auxiliary reproduction is performed by the third reproduction control unit 54 (S12). While the auxiliary reproduction is being performed, the reproduction lamp 60 is turned on. For example, the third regeneration control unit 54 ends the auxiliary regeneration when the PM accumulation amount is less than the first accumulation amount threshold value, that is, when the level reaches 0. When the auxiliary reproduction is completed (S13), the third reproduction control unit 54 turns off the reproduction lamp 60, the third reproduction control unit 54 outputs a stop signal to the engine control device 32, and the prime mover via the engine control device 32. The drive of E1 is stopped (S14).

On the other hand, when the regeneration control device 33 determines that the PM deposit amount is equal to or higher than the second deposit amount threshold value (level 2) (S2: Yes), the second manual switch 58 blinks (S15). It is determined whether or not the second manual switch 58 has been operated (whether or not the second manual switch 55 has been switched from OFF to ON) (S16).
If the second manual switch 58 is not operated, it returns and does not proceed (S16: No). When the second manual switch 58 is ON (S16: Yes), a command signal is sent from the second manual switch 58 to the reproduction control unit 47, and manual reproduction is performed by the second reproduction control unit 53 (S17). Further, manual reproduction is permitted when a predetermined condition is satisfied, and manual reproduction is not performed when the predetermined condition is not satisfied. When manual reproduction is being performed, the second manual switch 58 is lit and the reproduction lamp 60 is lit (S18). When the manual reproduction is completed, the second manual switch 58 and the reproduction lamp 60 are turned off. In the above-described embodiment, automatic reproduction is performed when the level is 1, but automatic reproduction may be performed when the level is 2.

According to the above flow, automatic playback, manual playback, and auxiliary playback can be performed. In particular, automatic regeneration and manual regeneration are performed under the condition that the work machine 1 is being driven (such as the situation where the work device 4 of the work machine 1 is used for work), that is, the DPF while the work machine 1 is rented to a user or the like. Reproduction can be performed.
On the other hand, when the rented work machine 1 is returned, the auxiliary reproduction can be executed by pressing the first manual switch 55 by the manager or the like of the rental company before renting the work machine 1. If the auxiliary regeneration is performed, the working machine 1 can be rented in a state where the PM accumulation amount is level 0. Further, the working machine 1 can be stored in a state where the PM accumulation amount is level 0. That is, in the conventional work machine 1, when the PM accumulation amount is level 1 or higher and the work machine 1 is returned to the rental company, the PM accumulation amount can be rented at the level 0 state before being rented to the next user. Although it was not, it can be rented out with the PM accumulation amount at level 0 by performing auxiliary regeneration.

Next, a modified example of the first manual switch 55 will be described with reference to FIGS. 5 and 6.
As shown in FIG. 5, in the modified example, the first manual switch 55 is provided in the control unit 24. The first manual switch 55 is provided on the display device 29 of the control unit 24. Further, the first manual switch 55 is covered with a cover (covering member) 61 that can be opened and closed. The cover 61 is made of an opaque material, and when the cover 61 is closed, the operator cannot visually recognize the first manual switch 55. As shown in FIG. 6, the operator can open the cover 61. Can visually recognize the first manual switch 55. In FIGS. 5 and 6, the cover 61 is a blindfold member that can be opened and closed and hides the first manual switch 55.

The cover (covering member) 61 may be made of a transparent or translucent material so that the operator can see it when the cover 61 is closed, but cannot operate the cover 61 unless the cover 61 is opened. That is, as described above, the first manual switch 55 is not a switch operated by the operator in which the driver's seat 6 is seated. Therefore, the first manual switch 55 is provided with a cover 61 that covers the entire first manual switch 55 from the outside. 1 The operation of the manual switch 55 is restricted. In this modification, the first manual switch 55 with the cover 61 may be provided anywhere as long as it is the control unit 24.

According to the above, the working machine 1 has a manual switch, a filter 41 for collecting particulate matter (PM) contained in the exhaust gas discharged from the prime mover E1, and a deposit of particulate matter collected by the filter 41. At the first regeneration control unit 52 that automatically regenerates particulate matter that is automatically burned when the amount is equal to or greater than the first accumulated amount threshold, and at the second accumulated amount threshold or higher in which the accumulated amount is larger than the first accumulated amount threshold. In some cases, the second regeneration control unit 53 that performs manual regeneration that burns particulate matter by the command of the manual switch, and the command of the manual switch when the accumulated amount is equal to or more than the first accumulated amount threshold and less than the second accumulated amount threshold. A third regeneration control unit 54 that performs auxiliary regeneration for burning particulate matter is provided. According to this, when the PM deposit amount is equal to or more than the first deposit amount threshold value and less than the second deposit amount threshold value, the auxiliary regeneration for burning the PM can be performed by a manual operation.

Further, the third reproduction control unit 54 performs auxiliary reproduction when the elapsed time from the end of the automatic reproduction by the first reproduction control unit 52 is equal to or longer than the time threshold value. According to this, it is possible to suppress the repetition of filter regeneration (DPF regeneration) in a short time, and it is possible to prevent oil dilution by extension.
Further, the third reproduction control unit 54 performs auxiliary reproduction when the command of the manual switch is acquired after the elapsed time from the end of the automatic reproduction by the first reproduction control unit 52 becomes equal to or more than the time threshold value. According to this, it is possible to prevent the auxiliary reproduction from starting unexpectedly. That is, if the manual switch is operated after the automatic playback is completed and then the auxiliary playback is started when the elapsed time exceeds the time threshold value, the auxiliary playback is suddenly started. Can be prevented.

In addition, a notification unit 51 that notifies that the elapsed time from the end of automatic regeneration by the first regeneration control unit 52 is equal to or greater than the time threshold value and the accumulated amount is equal to or greater than the first accumulated amount threshold value and less than the second accumulated amount threshold value. I have. According to this, it is possible to notify the outside that auxiliary reproduction is possible.
Further, the manual switch includes a first manual switch 55 that issues an auxiliary reproduction command and a second manual switch 58 that issues a manual reproduction command. According to this, the auxiliary reproduction and the manual reproduction can be easily distinguished by separating the switch for performing the auxiliary reproduction and the switch for performing the manual reproduction.

Further, the third reproduction control unit 54 stops driving the prime mover E1 after the auxiliary reproduction is completed. According to this, since the driving of the prime mover E1 is automatically stopped after the end of the auxiliary reproduction, it is not necessary to stop the prime mover E1 after the end of the auxiliary reproduction, which is convenient.
Further, the working machine 1 is provided at a position different from that of the control unit 24 and includes a first manual switch 55 that commands combustion of particulate matter. According to this, the manager or the like of the work machine 1 of the rental company or the like can perform DPF regeneration before renting out the work machine 1 by manual operation. Further, it is possible to prevent the operator who operates the work machine 1 from operating the first manual switch 55.

Further, the first manual switch 55 is arranged in a cover device such as a bonnet 11. According to this, it is possible to prevent the operator from operating the first manual switch 55 while operating the first manual switch 55, and only the manager of the working machine 1 such as a rental company can perform the DPF regeneration.
Further, the working machine 1 is provided with a second manual switch 58 provided in the control unit 24 and instructing the regeneration control unit 47 to burn the particulate matter. Further, the regeneration control unit 47 performs auxiliary regeneration for burning the particulate matter when the accumulated amount of the particulate matter collected by the filter 41 is equal to or more than the first deposition amount threshold, and the particulate matter collected by the filter 41. The first manual switch 55 is a switch that commands the regeneration control unit 47 to perform auxiliary regeneration by manually regenerating the particulate matter when the accumulated amount is equal to or greater than the second accumulated amount threshold, and is a second manual switch. Reference numeral 58 denotes a switch for instructing the reproduction control unit 47 to perform manual reproduction. According to this, the operator who operates the work machine 1 can execute the DPF regeneration by the second manual switch 58, and the manager of the rental company or the like can execute the DPF regeneration by the first manual switch 58.

Further, the first manual switch 55 is covered with a cover member (cover 61) that can be opened and closed. Further, the covering member is composed of a blindfold member that hides the first manual switch 55. According to this, the manager or the like of the work machine 1 of the rental company or the like can perform DPF regeneration before renting out the work machine 1 by manual operation. Further, it is possible to prevent the operator who operates the work machine 1 from operating the first manual switch 55.
[Second Embodiment]
7 to 10 show a second embodiment. In the first embodiment described above, the first manual switch 55 is provided in the work machine so that the auxiliary reproduction can be executed. However, in the second embodiment, at least the rental management information for managing the rental of the work machine is provided. It is an embodiment which executes auxiliary reproduction when it is input to a work machine. In the second embodiment, the same parts as those in the first embodiment will be omitted and different points will be described. Further, in the second embodiment, the description will proceed assuming that the first manual switch 55 (auxiliary regeneration switch) is not provided in the work machine 1.

FIG. 7 shows the rental system 116 of the work machine 1. As shown in FIG. 7, the rental system has a server 117 that manages the rental status of the work machine 1. The server 117 is installed in a rental company of the work machine 1 that purchases or rents the work machine 1 from a seller such as a dealer or a manufacturing company for rental purposes. The rental company has a store 120 (storage place) in which the work machine 1 is stored. A store terminal 121 that can be connected to the server 117 is installed in the store 120. The store terminal 121 is a personal computer.

User terminals 122 and 123 can be connected to the server 117 via the network N1. The user terminal 122 is a mobile terminal that the user can possess. The mobile terminal is composed of, for example, a smartphone (multifunctional mobile phone) or a tablet PC having a relatively high computing power. Further, the user terminal 123 is a personal computer or the like installed by the user at home or the like.

The server 117 has a reservation processing unit 118 and a transmission unit 119. The reservation processing unit 118 and the transmission unit 119 are composed of electrical / electronic components provided in the server 117, a program stored in the server 117, and the like. The reservation processing unit 118 processes the reservation request transmitted from the user terminals 122 and 123 via the network N1. That is, the reservation processing unit 118 selects a vacant working machine 1 according to the desired rental model and the desired rental period transmitted from the user terminals 122, 123, etc. to the server 117.

When the user acknowledges that the selected work machine 1 is reserved, the transmission unit 119 transmits information (rental information) regarding the rental reservation to the store terminal 121 via the network N. Further, the transmission unit 119 transmits the rental information to the user terminals 122, 123, etc. via the network N. The rental information transmitted from the transmission unit 119 is stored in the store terminal 121, the user terminal 122, and 123, respectively. The rental information is, for example, the rental period of the work machine (rental date, return date, store information, user information, machine information). The store information is information for identifying a store, such as a store name, a store management number, and a store address. The user information is information that identifies the user, such as the name, gender, age, address, telephone number, and e-mail address of the lender (reservation person). The machine information is information that identifies the machine, and is a model, model, control number, serial number, etc. assigned to the work machine.

Since the work machine is rented to various users, the work machine is equipped with an anti-theft device (starting check device). As shown in FIG. 8, the anti-theft device includes keys (ignition keys) 128A and 128B, a key cylinder 62 having an antenna 127, and a start control unit 126.
The key (management key) 128A is a key managed by a rental company or the like and stored in a store, and is a key dedicated to management. The management key 128A is a key used by the rental company to operate a plurality of work machines 1 owned by the rental company, not by the user. The management key 128A is a key used, for example, when the manager of the rental company operates the work machine 1 for maintenance or the like before renting the work machine or after returning the work machine.

The key (user key) 128B is a key possessed by a user who has rented a work machine from a rental company, and is a key dedicated to the user. The user key 128B can be used for one specific work machine 1 and cannot be used for other than the specific work machine 1. Transponder chips 129A and 129B are embedded in the management key 128A and the user key 128B, respectively. The first start information is stored in each of the transponder chips 129A and 129B. For example, the first start information of the management key is "9670" and the first start information of the user key is "1020", which is different from the first start information of the management key and the first start information of the user key. There is. For convenience of explanation, in the following description, the management key 128A and the user key 128B may be simply referred to as keys 128A and 128B, respectively.

The start control unit 126 is composed of electrical and electronic components provided in the engine control device 32, a program stored in the engine control device 32, and the like. When the start control unit 126 collates the first start information stored in the keys 128A and 128B with the second start information stored in the engine control device 32, the start control unit 126 uses the keys 128A and 128B to move the prime mover E1. Allow start. When the start control unit 126 gives permission to start the prime mover E1 (starting permit), the engine control device 32 ignites the ignition device of the prime mover E1 and injects fuel from the fuel injection device to start the prime mover E1. The start control unit 126 does not allow the start of the prime mover E1 by the keys 128A and 128B when the matching between the first start information of the keys 128A and 128B and the second start information is not established.

The reproduction control device 33 has a first reproduction control unit 52, a second reproduction control unit 53, and a third reproduction control unit 54. The first reproduction control unit 52 and the second reproduction control unit 53 are the same as those in the first embodiment.
FIG. 9 is a flowchart illustrating the flow of control of automatic reproduction and manual reproduction. S1 to S7 of FIG. 9 are the same as those of FIG. S15 to S18 of FIG. 9 are the same as those of FIG. As shown in FIG. 9, when the PM deposit amount is equal to or more than the first deposit amount threshold value and less than the second deposit amount threshold value (level 1), the first regeneration control unit 52 performs automatic regeneration (S5). Further, when the second manual switch 58 is ON (S16: Yes), the second reproduction control unit 53 performs manual reproduction (S17).

When rental management information is input to the reproduction control device 33, the third reproduction control unit 54 executes auxiliary reproduction by outputting a command signal (third command signal) for performing auxiliary reproduction to the engine control device 32. do.
The rental management information is information managed by a rental company or the like, and is information input to the work machine 1 before or after the rental of the work machine 1 to be rented. In other words, the rental management information is information that is distinguished from the information that is input while the work machine is rented to the user. In this embodiment, the rental management information is the first start information stored in the management key 128A, and the key cylinder 62 is an acquisition device capable of acquiring the rental management information. Therefore, the third reproduction control unit 54 assists when the management key 128A is inserted into the key cylinder (acquisition device) 62 and the key cylinder (acquisition device) 62 acquires the first start information (rental management information). A command signal for reproduction (third command signal) is output to the engine control device 32.

FIG. 10 is a flowchart illustrating the flow of auxiliary reproduction and anti-theft control.
When the keys 128A and 128B are inserted into the key cylinder 62 (acquisition device) and the antenna 127 receives the key information (first start information, second start information) stored in the keys 128A and 128B (S21, Yes), the control is performed. The device 46 (regeneration control device 33, engine control device 32) proceeds to S22. Specifically, when the antenna 127 receives the key information recorded on the key as the acquisition information by inserting the key into the key cylinder 62 and rotating the key, the control device 46 proceeds to S22.

If the key information (acquisition information) acquired by the key cylinder 62 is the first start information of the key 128A, the control device 46 determines that the rental management information has been acquired (S22, Yes). The control device 46 (reproduction control device 33) starts the prime mover E1 when the rental management information is acquired (S23). That is, the third reproduction control unit 54 of the reproduction control device 33 outputs a fourth command signal for preparing auxiliary reproduction to the engine control device 32, and the engine control device 32 receives the fourth command signal to start the prime mover E1. Further, when the rental management information is acquired, the third reproduction control unit 54 of the reproduction control device 33 switches the second manual switch (manual switch) 58 to a switch for performing auxiliary reproduction (manual switch 58 performs auxiliary reproduction). To function as a switch to perform). That is, when the manual switch 58 is turned on at the stage of S24, the reproduction control device 33 executes the auxiliary reproduction instead of the manual reproduction.

That is, when the manual switch 58 is operated (S24: Yes), the third regeneration control unit 54 outputs a third command signal to the engine control device 32 when the PM accumulation amount is level 1 or higher, and assists. Playback is executed (S25). If the manual switch 58 is not operated (S24: No), the third reproduction control unit 54 does not output the third command signal to the engine control device 32 and does not execute the auxiliary reproduction.

On the other hand, in the control device 46, when the key information acquired by the key cylinder 62 is not the first start information of the key 128A but other information, for example, the key information acquired by the key cylinder 62 is the first start information of the key 128B. (S22, No), the first start information of the key 128B and the second start information of the start control unit 126 are collated (S26). When the first start information and the second start information match (S27, Yes), the start control unit 126 starts the prime mover E1 (S28). In this case, when the PM accumulation amount becomes level 2 and the manual switch 58 is operated, the second regeneration control unit 53 (regeneration control unit 47) performs manual regeneration. Further, the start control unit 126 does not start the prime mover E1 when the first start information and the second start information do not match (S27: No).

As described above, when the key cylinder 62 (acquisition device) acquires the rental management information and the third reproduction control unit 54 acquires the command of the manual switch 58, the auxiliary regeneration (DPF regeneration) can be performed. .. Further, in FIG. 10, it is not always necessary to determine whether or not the manual switch 58 of S24 has been operated. That is, when the key information acquired by the key cylinder 62 is rental management information, the third regeneration control unit 54 may cause the engine control device 32 to start the prime mover E1 and execute processing such as post injection. In other words, the DPF regeneration may be performed when the key cylinder 62 (acquisition device) acquires the rental management information.

Further, the first start information stored in the management key 128A was shared information (starting and rental management information) for executing the start and auxiliary reproduction of the prime mover E1, but for starting the prime mover E1. The information (first start information) and the information for executing the auxiliary reproduction (rental management information) may be separately stored in the management key 128A. Further, the management key 128A may store only the rental management information without storing the first start information.

By the way, in the above-described embodiment, the rental management information is stored in the management key 128A, and the auxiliary reproduction is performed when the key cylinder 62 acquires the rental management information. However, the method of acquiring the rental management information is described above. It may be other than the above-described embodiment.
FIG. 11 shows a first modification. In the work machine 1 of the first modification, the acquisition device is not a key cylinder 62 but an input device 131 that receives an input from an administrator or the like. The input device 131 is, for example, a numeric keypad for inputting a numerical value from 0 to 9. The input device 131 may be any device as long as it accepts input, and may be a display device 29 provided on the work machine 1 and displaying information about the work machine 1.

The numeric keypad 131 is connected to the control device 46 (reproduction control device 33). When the acquired information received by the numeric keypad 131 is the first start information, the start control unit 126 collates the first start information input to the numeric keypad 131 with the second start information stored in the start control unit 126. If they match, the prime mover E1 is started, and if they do not match, the prime mover E1 is not started.
FIG. 12 is a flowchart illustrating the flow of auxiliary reproduction and anti-theft control. Since S23 to S28 of FIG. 12 are the same as those of FIG. 10, the description thereof will be omitted.

When the information (acquisition information) is input to the numeric keypad (acquisition device) 131 (S31, Yes), the control device 46 (reproduction control device 33, engine control device 32) proceeds to S32. Specifically, when a 4-digit number is input to the numeric keypad 131, the control device 46 proceeds to S32.
The control device 46 determines whether or not the acquired information (four-digit number) received by the numeric keypad 131 is rental management information (S32). For example, the reproduction control device 33 stores management information (for example, a 4-digit number) for executing auxiliary reproduction in advance, and the acquired information (4-digit number) received by the numeric keypad 131 and the reproduction control. When the management information (four-digit number) stored in the device 33 matches, the control device 46 determines that the rental information has been acquired (S32, Yes).

As described above, when the numeric keypad (acquisition device) 131 acquires the rental management information and the third reproduction control unit 54 acquires the command of the manual switch 58, the auxiliary reproduction (DPF regeneration) can be performed.
FIG. 13 shows a second modification. In the work machine 1 of the second modification, the acquisition device is a communication unit 132 that receives rental management information transmitted from a management terminal such as a mobile terminal 134.

The mobile terminal (management terminal) 134 is a terminal managed by the rental company or the like and stored in the store, and is owned by the manager or the like of the rental company. The mobile terminal 134 is composed of, for example, a smartphone (multifunctional mobile phone), a tablet PC, or the like having a relatively high computing power. Various information can be input to the mobile terminal 134, and the input information (input information) can be transmitted to the communication unit 132.

The communication unit 132 is provided in the reproduction control device 33, and is a device that performs wireless communication by, for example, Wi-Fi (Wireless Fidelity, a registered trademark) of the IEEE 802.11 series, which is a communication standard. The communication unit 132 may be a device that performs wireless communication via a mobile phone communication network or a device that performs wireless communication via a data communication network.
The communication unit 132 can receive the rental management information transmitted from the mobile terminal 134. The mobile terminal (management terminal) 134 is a terminal managed by the rental company or the like and stored in the store, and is owned by the manager or the like of the rental company. The mobile terminal 134 is composed of, for example, a smartphone (multifunctional mobile phone), a tablet PC, or the like having a relatively high computing power. Various information can be input to the mobile terminal 134, and the input information (input information) can be transmitted to the communication unit 132.

FIG. 14 is a flowchart illustrating the flow of auxiliary reproduction control. Since S23 to S25 of FIG. 14 are the same as those of FIG. 10, the description thereof will be omitted.
When the communication unit (acquisition device) 132 acquires the input information input to the mobile terminal 134 (S41), the control device 46 (reproduction control device 33) proceeds to S42. Specifically, after the input information of the 4-digit number is input to the mobile terminal 134, the communication unit 132 transmits the input information of the 4-digit number to the mobile terminal 134, and the communication unit 132 transmits the input information of the 4-digit number from the mobile terminal 134. Upon receiving the input information of the four-digit number, the control device 46 proceeds to S32.

The control device 46 determines whether or not the acquired information (input information) received by the communication unit 132 is rental management information (S42, Yes). For example, the reproduction control device 33 stores management information (for example, a 4-digit number) for executing auxiliary reproduction in advance, and the acquired information (4-digit number) received by the communication unit and the reproduction control. When the management information (four-digit number) stored in the device 33 matches, the control device 46 determines that the rental information has been acquired (S42, Yes). When the rental information is acquired, the third reproduction control unit 54 of the reproduction control device 33 permits auxiliary reproduction (S43). After the auxiliary reproduction is permitted, as shown in S23 to S25, the auxiliary reproduction is executed when the manual switch 58 is turned on. After the auxiliary reproduction is completed, the prime mover E1 is stopped. On the other hand, when the rental management information is not acquired, the third reproduction control unit 54 of the reproduction control device 33 does not allow the auxiliary reproduction (S44).

As described above, when the communication unit (acquisition device) 132 acquires the rental management information and the third reproduction control unit 54 acquires the command of the manual switch 58, the auxiliary regeneration (DPF regeneration) can be performed. ..
FIG. 15 shows a third modification. In this third modification, the acquisition device is a communication unit 132 that receives rental management information transmitted from a management terminal such as the communication device 136.

The communication device 136 is a device provided around a storage place where the work machine 1 is stored in the store, and transmits store information (store location, store management number, store address, etc.) related to the store. When the communication device 136 is provided at the entrance / exit of the storage location, it is preferable to set the communication distance of the communication device 136 to several m to several tens of m. The communication unit 132 can receive the store information transmitted from the communication device 136.

When the work machine 1 approaches the store (storage place), the communication unit 132 of the work machine 1 receives the store information transmitted from the communication device 136. When the acquired information received by the communication unit 132 is "store information", the control device 46 determines that it is rental management information. When the rental management information is received, the third reproduction control unit 54 of the reproduction control device 33 executes the auxiliary reproduction. For example, the third reproduction control unit 54 switches the manual switch 58 to a switch for performing auxiliary reproduction after the communication unit 132 receives the rental management information, and when the manual switch 58 is turned on, the prime mover E1 is started and the auxiliary reproduction is performed. To execute. In the third modification, the auxiliary reproduction may be performed without operating the manual switch 58. Further, it may be detected by a positioning satellite system such as GPS that the work machine 1 has returned to the store.

In the second embodiment including the above-described modification, the manual switch 58 is used as a switch for both manual reproduction and auxiliary reproduction, but a dedicated switch for auxiliary reproduction (auxiliary reproduction switch) may be provided. That is, by providing the work machine 1 with the first manual switch (auxiliary playback switch) 55 shown in the first embodiment and turning on the auxiliary playback switch 55 in a state where the work machine 1 has acquired rental management information. Auxiliary reproduction may be performed. As described above, when the rental management information is acquired and the auxiliary reproduction is executed depending on the presence or absence of the switch operation, the existing switch equipped in the work machine 1 may be used as the auxiliary reproduction switch 55. For example, when the PM accumulation amount is level 1 and it is satisfied that the vehicle is parked, the existing switch may function as an auxiliary regeneration switch. Further, for example, a horn switch for sounding the horn, a wiper switch for instructing the operation of the wiper, and the like may also be used as the auxiliary playback switch.

According to the above, the acquisition device capable of acquiring rental management information for managing rental and the regeneration control unit 47 for burning the particulate matter collected by the filter 41 when the acquisition device acquires rental management information. I have. According to this, since the DPF regeneration can be performed when the acquisition device acquires the rental management information, the work machine can be rented or stored with the filter 41 in a clean state.

Further, the working machine 1 includes manual switches 58 and 55, and the reproduction control unit 47 collects particles by the filter 41 when the acquisition device acquires rental management information and a command by the manual switches 58 and 55. Burns particulate matter. According to this, the administrator or the like can surely perform the DPF regeneration in the state where the work machine 1 is stored in the store or the like of the rental company.
Further, the acquisition device 130 has an input device 131 that receives the input information, and the reproduction control unit 47 is in the form of particles collected by a filter when the acquisition information received by the input device 131 is rental management information. Burns substances. According to this, the DPF regeneration can be performed by the administrator inputting the rental management information into the input device.

Further, the acquisition device 130 has a key cylinder 62 that receives the key 128A that stores the start information, and the reproduction control unit 47 captures the start information stored in the key 128A by the filter 41 when the start information is rental management information. Combustion of the collected particulate matter. According to this, the DPF regeneration can be easily and surely performed only by the administrator or the like inserting the key 128A for storing the start information into the key cylinder 62.

Further, the acquisition device 130 has a communication unit 132 that receives information transmitted from the mobile terminal, and the reproduction control unit 47 captures the information received by the communication unit 132 by the filter 41 when it is rental management information. Combustion of the collected particulate matter. According to this, the DPF regeneration can be easily performed only by the administrator or the like transmitting the rental management information to the work machine 1 (communication unit 132) using the mobile terminal.

The filter regeneration system of the work machine 1 is a filter 41 that collects particulate matter contained in the exhaust gas discharged from the prime mover E1, an acquisition device that can acquire rental management information that manages rental, and the acquisition device is rented. It includes a regeneration control unit 47 that burns particulate matter collected by the filter 41 when management information is acquired. According to this, the administrator or the like can surely perform the DPF regeneration in the state where the work machine 1 is stored in the store or the like of the rental company.

Although the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

11 Cover device (bonnet)
24 Control unit 41 Filter 47 Playback control unit 55 1st manual switch 58 2nd manual switch 61 Covering member E1 Motor (drive equipment)
P1 hydraulic pump

Claims (4)

A filter that collects particulate matter contained in the exhaust gas discharged from the prime mover,
A regeneration control unit that burns particulate matter collected by the filter, and
A permission switch provided in the control unit and for selecting whether or not to permit automatic regeneration in which the regeneration control unit automatically burns the particulate matter.
A second manual switch, which is different from the permission switch and is provided in the control unit and is operated to instruct the regeneration control unit to burn the particulate matter.
A switch different from the permission switch and the second manual switch, the first manual switch which is provided in the control unit and is operated to instruct the regeneration control unit to burn the particulate matter. ,
With
When the accumulated amount of the particulate matter collected by the filter is equal to or more than the first accumulated amount threshold and less than the second accumulated amount threshold larger than the first accumulated amount threshold, the regeneration control unit of the particulate matter. The automatic regeneration that automatically burns and the manual operation of the particulate matter when the amount of the particulate matter collected by the filter is equal to or greater than the first accumulation amount threshold and less than the second accumulation amount threshold. Auxiliary regeneration for burning by operation and manual regeneration for manually burning the particulate matter when the accumulated amount of the particulate matter collected by the filter is equal to or greater than the second deposition amount threshold are performed.
The control unit has a driver's seat
The permission switch and the second manual switch are provided on the control unit so as to be exposed so that an operator seated in the driver's seat can operate the switch.
The second manual switch is a switch that commands the manual reproduction to the reproduction control unit.
The first manual switch is a switch that commands the reproduction control unit to perform the auxiliary reproduction , and is provided in the control unit so as to be operable by an operator seated in the driver's seat, and only the first manual switch is used. It is a covering member that covers and is covered with a covering member that can be opened and closed, the time elapsed from the end of the automatic regeneration by the regeneration control unit is equal to or greater than the time threshold value, and the accumulated amount of the particulate matter is the first. A working machine having a lamp that lights in an auxiliary reproducible state that is equal to or more than the accumulation amount threshold and less than the second accumulation amount threshold. The control unit has a display device provided around the driver's seat.
The permission switch, the first manual switch, and the second manual switch are arranged on the display device.
The working machine according to claim 1, wherein the covering member is composed of a blindfold member that hides the first manual switch. The working machine according to claim 2 , wherein the permission switch, the first manual switch, and the second manual switch are arranged side by side on the display device. The first manual switch, by at least two or more operations, Ri switch der commanding the combustion of the particulate matter,
The covering member, the working machine according to claim 1 that is formed of a transparent or translucent material.

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