JP7687367B2 - Work vehicles - Google Patents

Description

The present invention relates to a work vehicle equipped with a work device.

There is a known combine harvester that has an operating section on the left side of the operator's seat where various operating levers such as the main shift lever and dials are concentrated (see Patent Document 1).

JP 2013-094105 A

Maintenance work on the various electrical components inside the control unit and mechanical transmission components such as cables and links is performed by removing the side covers of the control unit to expose the inside, but the control seat is located nearby, making it difficult to perform maintenance work.

In addition, if the main switch is turned on or the engine is running during maintenance work, careless operation may cause the machine to move or the reaping or threshing equipment to start moving, posing a safety issue and even causing damage to the machine.

The present invention was made in consideration of the above, and provides a work vehicle that improves the ease and safety of maintenance work.

The first aspect of the present invention is
In a work vehicle equipped with a working device (6, 15) and provided with an operation panel (35) having an operation unit (38, 39, 42) near an operation seat (21), the operation panel (35) can be switched between a working state for performing work and a non-working state for performing maintenance, and when the operation panel (35) is switched to the non-working state, a control device stops the operation of the machine and disables some or all of the operations of the operation unit (38, 39, 42),
The operation panel (35) is configured such that the rear part is pivoted on a pivot shaft (34) and the front part rotates upward to open into a non-working state, and the working state and non-working state are determined by a switch provided on the pivot shaft (34) side or by detecting the rotation angle, or by a switch provided on the front side of the operation panel (35) or by detecting that the front side is in contact with a fixed part and is grounded to the body.
This work vehicle is characterized in that a gripping grip (36) used for shifting operations and gripping is provided on the front side of the operation panel (35) so as to protrude upward from the operation panel (35), and the gripping grip (36) is located further forward on the vehicle body than the main shift lever (38) and fits within the vertical height of the main shift lever (38).
According to the first aspect of the present invention, the safety is improved by preventing the inadvertent operation of the machine due to the instability of the operation units 38, 39, 42, and the damage to the machine can also be prevented. Furthermore, by determining the working state and the non-working state by electrical detection, it is possible to prevent the operation of the machine from being rejected due to erroneous detection even though the operation panel 35 is in the working state, and to prevent extra time from being spent on the operation. Furthermore, the operation panel 35 can be easily switched between the working state and the non-working state by grasping the holding grip 36, and in the working state, when the operator stands up from the operation seat 21 and operates each part, the holding grip 36 functions as a grip to prevent the operator from falling over, and is safe.
The second aspect of the present invention is
This is a first work vehicle of the present invention, characterized in that the right side of the operation panel (35) protrudes toward the operator's seat (21), an inward protrusion (37) is provided which is inclined so as to become lower as it goes inward, and an accelerator volume (39) for adjusting the engine output is provided on the side of the inward protrusion (37) closer to the operator's seat (21).
The third aspect of the present invention is
This is a first work vehicle of the present invention, characterized in that a switch panel (37) equipped with a low speed switch (42) for fixing the traveling speed to a low speed is provided on the front side of the operation panel (35), rearward of the grip (36) and to the right of the main shift lever (38), the low speed switch (42) is provided on a low speed switch mounting surface (41) formed on either the left or right side of the front of the switch panel (37) and the upper end of the low speed switch (42) is at the same height as the upper surface of the switch panel (37).
A first invention related to the present invention is a work vehicle equipped with working devices 6, 15 and an operation panel 35 with operation units 38, 39, 42 near the operating seat 21, the operation panel 35 being switchable between a working state for performing work and a non-working state for performing maintenance, and when the operation panel 35 is switched to the non-working state, a control device stops the operation of the machine and disables some or all of the operation of the operation units 38, 39, 42.

According to the first invention related to the present invention , when the operation panel 35 is put into a non-operating state, the control device stops the operation of the machine and disables some or all of the operation of the operation units 38, 39, 42, thereby preventing inadvertent operation of the machine due to instability of the operation units 38, 39, 42, thereby improving safety and preventing damage to the machine.

A second invention related to the present invention is a work vehicle of the first invention related to the present invention, in which the operation panel 35 is configured so that the rear part is pivoted on a pivot shaft 34 and the front part rotates upward to open into an upright non-working state, and the working state or non-working state is determined by a switch provided on the pivot shaft 34 side or by detecting the rotation angle, or by a switch provided on the front side of the operation panel 35 or by detecting that the front side is in contact with a fixed part and is grounded to the body.

According to a second invention related to the present invention , the operation panel 35 is configured so that its rear part is pivoted on the pivot shaft 34 and its front part rotates upward to open into an upright non-working state, and the working state and non-working state are determined by a switch provided on the pivot shaft 34 side or by detecting the rotation angle, or by a switch provided on the front side of the operation panel 35 or by detecting that the front side is in contact with a fixed part and is earthed to the body. Therefore, by determining the working state and non-working state through electrical detection, it is possible to prevent a situation where the operation of the machine is not accepted due to a false detection even though the operation panel 35 is in the working state, and unnecessary time is wasted on work.

In addition, it is possible to accurately prevent a situation in which the operation of the machine is accepted due to a false detection and the machine starts operating even though the operation panel 35 is not in an operating state, thereby ensuring the safety of the work.

A third invention related to the present invention is a work vehicle of the first or second invention related to the present invention, in which a gripping grip 36 used for shifting operations and gripping is provided on the front side of the operation panel 35 so as to protrude upward beyond the operation panel 35, and the gripping grip 36 is positioned further forward on the vehicle body than the main shift lever 38 and fits within the vertical height of the main shift lever 38.

According to a third invention related to the present invention , a grip 36 used for switching operations and gripping is provided on the front side of the operation panel 35 so as to protrude upward from the operation panel 35. This makes it easy to switch the operation panel 35 between an active state and a non-active state by gripping the grip 36. In the active state, when the operator stands up from the operation seat 21 and operates each part, the grip 36 functions as a grip to prevent tipping over, ensuring safety.

In addition, the grip 36 is located further forward in the aircraft body than the main shift lever 38 and fits within the vertical height of the main shift lever 38, so there is no need to make the grip 36 excessively large, preventing increases in weight and cost.

A fourth invention related to the present invention is a work vehicle of the third invention related to the present invention, in which the right side of the operation panel 35 protrudes toward the operator's seat 21, an inward protrusion 37 is provided which is inclined so as to become lower inward, and an accelerator volume 39 for adjusting the engine output is provided on the side of the inward protrusion 37 closer to the operator's seat 21.

According to the fourth invention related to the present invention , the right side of the operation panel 35 protrudes toward the operation seat 21, and an inward protrusion 37 is provided which is inclined so as to become lower as it goes inward, and an accelerator volume 39 for adjusting the engine output is provided on the side of the inward protrusion 37 closer to the operation seat 21. Therefore, the accelerator volume 39 which is used frequently can be positioned within easy reach of the operator seated in the operation seat 21, providing good visibility and operability.

The fifth invention related to the present invention is a work vehicle of the third invention related to the present invention, in which a switch panel 37 equipped with a low speed switch 42 for fixing the driving speed to a low speed is provided on the front side of the operation panel 35, rearward of the grip 36 and to the right of the main shift lever 38, the low speed switch 42 being provided on a low speed switch mounting surface 41 formed on either the left or right side of the front of the switch panel 37, and the upper end of the low speed switch 42 is at the same height as the upper surface of the switch panel 37 .

According to the fifth aspect of the present invention , the low speed switch 42 is provided, so that the operator does not need to fine-tune the traveling speed when moving to the start position of work, etc., thereby improving operability and workability.

In addition, a switch panel 37 equipped with a low-speed switch 42 for fixing the driving speed to low is provided on the front side of the operation panel 35, rearward of the grip 36, and to the right of the main shift lever 38. The low-speed switch 42 is mounted on a low-speed switch mounting surface 41 formed on either the left or right side of the front side of the switch panel 37, and the upper end of the low-speed switch 42 is at the same height as the upper surface of the switch panel 37. This allows the operator to easily operate the switch without losing his/her posture, and allows the operator to check the operating state of the low-speed switch 42 simply by changing his/her line of sight, preventing erroneous operation.

FIG. 1 is a side view of a combine harvester according to an embodiment of the present invention. FIG. FIG. FIG. FIG. FIG. 4 is a side view for explaining the operation inside the cabin.

The following describes a combine harvester 1, which is an example of a work vehicle according to an embodiment of the present invention, with reference to the attached drawings. Note that to facilitate understanding, directions are conveniently indicated as the front side, the rear side, the right hand side, and the left hand side as seen by the operator, but the configuration is not limited to these.

<Overall configuration of the combine>
As shown in Figure 1, the combine harvester 1 has a traveling device 4 on the lower side of a chassis 2, on which a pair of left and right traveling crawlers 3 are stretched, which travel on the soil surface, and on the left and right sides of the chassis 2, a threshing device 6 as a working device for threshing and sorting the stalks that are clamped and transported by a feed chain 5, a grain tank 7 as a storage device for temporarily storing the grains, and a grain discharging auger 8 for discharging the grains stored in the grain tank 7 outside the machine are mounted, and a straw disposal device 9 is mounted on the rear end of the threshing device 6. The grain discharging auger 8 is raised and lowered by operating an auger lifting cylinder when discharging grains.

In front of the threshing device 6, a harvesting device 15 as a working device having a grass dividing body 11 that divides uncut stalks from the front end, a raising section 12 that raises the divided stalks, a cutting blade section 13 that cuts the raised stalks, and a supply adjustment transport section that rakes in the cut stalks and adjusts the handling depth during transport and transfers it to the feed chain 5 is suspended from the front end of the chassis 2 so that it can be raised and lowered freely relative to the soil surface by a harvesting lifting cylinder.

The operating unit 20 that controls the operation of the combine harvester 1 and the operating seat 21 where the operator sits are provided at the upper right rear side of the harvester 15, the engine is mounted below the operating seat 21, the grain tank 7 is located at the rear, and a cabin 23 is provided to cover the operating unit 20 and the operating seat 21. The traveling device 4, threshing device 6, harvester 15, operating unit 20, engine, cabin 23, etc. are attached to the chassis 2 of the combine harvester.

The cabin 23 is configured in a box shape with a cabin roof 25 on top of a cabin frame 24 whose base is fixed to the chassis 2, and is equipped with a door 26 that opens and closes at the front with a right glass window 26a on the right side, a left glass window 27 on the left side, a windshield window 28 on the front side, and a rear glass window 29 on the rear side.

<Operation unit 20>
As shown in FIGS. 2 to 6, the operation unit 20 is made up of a front operation unit 20F provided in front of the operation seat 21 inside the cabin 23 and a side operation unit 20S provided on the left side of the operation seat 21.

The front operation unit 20F is provided with a steering lever 30 that operates the left and right traveling actuators that operate the left and right side clutches and left and right side brakes of the left and right traveling crawlers 3, 3 when tilted left or right, allowing left and right steering when traveling straight and turning in various turning modes, and operates the harvesting lifting cylinder when operated forward or backward to raise and lower the harvesting device 15; an armrest 31 on which the operator seated in the operation seat 21 places his or her hands when operating the steering lever 30; and a main monitor 32 that displays a grain tank full alarm when the full sensor detects that the grain tank 7 is full of grains, a fuel out alarm when the fuel out sensor detects that there is little fuel remaining in the fuel tank, and various support messages from the control device.

The main monitor 32 is fixed to the front right side of the operation panel 35 (described below), and when the operation panel 35 is opened to an upright non-operational position, it moves upward and rotates together with the operation panel 35.

The side operating section 20S is provided with an operating panel 35 at the top, whose rear part is pivoted on a pivot shaft 34 in the left-right direction of the machine body and whose front part rotates upward to open into a standing, non-operating state.

A rotating grip 36 is provided at the front end of the operation panel 35 as an inverted U-shaped plastic grip, and the rotating grip 36 is grasped to rotate the front part of the operation panel 35 upwards, opening it to a non-working state for performing maintenance work.

In addition, when the operation panel 35 is closed during operation, the rotating grip 36 is located at the front end of the side operation unit 20S (rightward and forward of the main shift lever 38 and lower than the grip 38a of the main shift lever 38) at the front left side of the front operation unit 20F, providing good visibility, and the operator can grasp the rotating grip 36 when standing up from the operation seat 21 to operate each part, which also functions as a grip to prevent tipping over, ensuring safety.

The front right side of the operation panel 35 is provided with a switch panel 37, which is an inward protruding part that protrudes toward the inside of the cabin 23 (operation seat 21) and is inclined so that it becomes lower as it goes inward.

On the front left side of the operation panel 35, there is a main gear shift lever 38 that operates a gear shift actuator (HST) that switches between forward/reverse travel and stopping and switches the main gear shift when operated forward/reverse by the operator seated in the operation seat 21.

The switch panel 37 is provided with an accelerator volume 39 for adjusting the engine output, located immediately above the knees of the operator seated in the operator's seat 21 on the protruding side.

The accelerator volume 39 is also positioned to the side (the driver's side) of the main shift lever 38 in the forward operation direction from the neutral position of the main shift lever 38 so as not to interfere with the operation movement path of the main shift lever 38.

The accelerator volume 39 is therefore located on the switch panel 37 at a position closest to the operator seated at the operating seat 21, providing good visibility and ease of operation.

On the rear side of the accelerator volume 39 of the switch panel 37, on the side farther from the operator's seat 21 than the accelerator volume 39, there is a rolling volume 40a that controls the left and right tilt of the machine body, and a lifting volume 40b that controls the ground working height of the harvesting device 15.

The side of the switch panel 37 at the front, far from the operator's seat 21, is cut out at an angle to provide a low-speed switch mounting surface 41 that is one step lower, and a low-speed switch 42 that fixes the driving speed to low is provided on the low-speed switch mounting surface 41.

The low-speed switch mounting surface 41 is wider than the low-speed switch 42, allowing the operator to press and operate it even while wearing gloves.

When the low speed switch 42 is pressed, the shift actuator (HST) is operated to a specified low speed state, and the driving speed is fixed at a low speed.

Therefore, by providing the low-speed switch 42, the operator does not need to fine-tune the travel speed when moving to the start position of the work, etc., improving operability and workability.

The low-speed switch 42 is located to the right of the main shift lever 38 (inside the cabin 23) and further forward on the aircraft than the fastest forward position when the main shift lever 38 is moved all the way forward, allowing the pilot to easily operate it without losing his or her balance, and to check the operating state of the low-speed switch 42 simply by changing the line of sight.

The low-speed switch 42 is located at a position lower than the upper end of the rotating grip 36, and when not pressed, the upper end of the low-speed switch 42 is at the same height as the upper surface of the switch panel 37 or protrudes slightly. When pressed, the upper end of the low-speed switch 42 becomes lower than the upper end of the switch panel 37, preventing erroneous operation.

And behind the switch panel 37, there is a mowing operation lever 43 that turns the operation of the mowing device 15 on and off.

In addition, a drink holder 44 and a 12V socket 45 are provided behind the main shift lever 38.

The main shift lever 38, accelerator volume 39, rolling volume 40a, lift volume 40b, low-speed switch 42, mowing operation lever 43, etc. are the operating parts of the present invention.

On the other hand, a determination device is provided to determine whether the operation panel 35 is in a closed working state or in a non-working state in which the front part is rotated upward on the rear pivot shaft 34 and opened and standing.

The determination device detects and determines whether the operation panel 35 is in a closed working state using a switch provided on the pivot shaft 34 at the rear of the operation panel 35, and sends the determination information to the control device.

In addition, instead of the switch provided on the pivot shaft 34 at the rear of the operation panel 35, a variable sensor such as a potentiometer or angle sensor may be used.

The determination device may also be a switch provided on the fixed part that detects the underside of the front of the operation panel 35 when the operation panel 35 is in a closed working state, or a jumper wire connected to the control device may be attached to the unpainted part on the underside of the front of the operation panel 35 to detect when the unpainted part on the underside of the front of the operation panel 35 comes into contact with the fixed part and is earthed to the body.

When the operation panel 35 is opened for maintenance and placed in a non-operating upright state, the determination device sends determination information that the operation panel 35 is in a non-operating state to the control device, and the control device stops the engine (the engine cannot be started, and will stop if it is running), preventing inadvertent operation of the aircraft due to the various control levers and switches becoming unstable, improving safety and preventing damage to the aircraft.

In addition, when the operation panel 35 is opened for maintenance and placed in a standing, non-operating state, the determination device may send determination information that the operation panel 35 is in a non-operating state to the control device, and the control device may not be able to turn on the main switch.

In addition, when the operation panel 35 is opened for maintenance and placed in a standing, non-operating state, the determination device sends determination information that the operation panel 35 is in a non-operating state to the control device, and the control device may disable the use of each operation lever, such as the main shift lever 38, and various electrical components, such as the accelerator volume 39, on the operation panel 35.

In the figure, a brake pedal 51 and a footrest 52 are provided on the floor 50 inside the cabin 23, and a remote control 53 is attached to the right end of the front operation unit 20F. In addition, on the outside of the door 26, there are provided a boarding/alighting step 54, a handrail 55, a side mirror 56, and a headlight 57.

6. Working equipment (threshing equipment)
15 Working equipment (reaping equipment)
21: Operator seat; 34: Pivot shaft; 35: Operation panel; 36: Holding grip (rotating grip)
37 Inner protrusion (switch panel)
38 Operation unit (main shift lever)
39 Operation unit (accelerator volume)
41: Low speed switch mounting surface 42: Operation section (low speed switch)

Claims (3)

In a work vehicle equipped with a working device (6, 15) and provided with an operation panel (35) having an operation unit (38, 39, 42) near an operation seat (21), the operation panel (35) can be switched between a working state for performing work and a non-working state for performing maintenance, and when the operation panel (35) is switched to the non-working state, a control device stops the operation of the machine and disables some or all of the operations of the operation unit (38, 39, 42) ,
The operation panel (35) is configured such that the rear part is pivoted on a pivot shaft (34) and the front part rotates upward to open into a non-working state, and the working state and non-working state are determined by a switch provided on the pivot shaft (34) side or by detecting the rotation angle, or by a switch provided on the front side of the operation panel (35) or by detecting that the front side is in contact with a fixed part and is grounded to the body.
This work vehicle is characterized in that a gripping grip (36) used for shifting operations and gripping is provided on the front side of an operation panel (35) so as to protrude upward from the operation panel (35), and the gripping grip (36) is located on the front side of the machine body more forward than a main shift lever (38) and fits within the vertical height of the main shift lever (38) . 2. The work vehicle according to claim 1, characterized in that an inward protrusion (37) is provided such that a right side of the operation panel (35) protrudes toward the operation seat (21) and is inclined so as to become lower inward, and an accelerator volume (39) for adjusting engine output is provided on the side of the inward protrusion (37) closer to the operation seat ( 21) . 2. The work vehicle according to claim 1, characterized in that a switch panel (37) equipped with a low-speed switch (42) for fixing the traveling speed to a low speed is provided on the front side of the operation panel (35), rearward of the grip (36) and to the right of the main speed change lever (38), the low-speed switch (42) being provided on a low-speed switch mounting surface (41) formed on either the left or right side of the front side of the switch panel (37) and the upper end of the low-speed switch (42) is at the same height as an upper surface of the switch panel ( 37 ).