JP5149751B2 - Waste transport device - Google Patents

Description

  The present invention relates to a waste transporting device provided in a combine or the like, and more specifically, a waste transport that sandwiches and transports a waste by a waste transport chain and a guide rail disposed below the waste transport chain. Relates to the device.

  Conventionally, there is a combine having a waste transporting device that transports the waste subjected to the threshing process to a waste processing unit disposed at the rear of the combine. The waste disposal section includes a cutter that cuts waste finely and discharges it to the outside of the machine, a dropper that converges and discharges waste that has passed through the cutter, and passes over the cutter. There are knotters etc. that bind the discharged waste conveyed in this way and discharge it as a bundle. In the case of a combine that is not equipped with a knotter or dropper, the discharged waste that has been transported is discharged to the rear of the machine.

  Some of the waste transporting devices provided in the above-described combine are configured to selectively transport the waste to the plurality of waste processing units. That is, the waste transport device includes a waste transport chain for transporting the waste, and a guide rail that is disposed below the waste transport chain and has a fixed rail and a movable rail. It is possible to select a transport destination of the waste by an expansion / contraction mechanism that conveys the bag while sandwiching the bag and expands / contracts the movable rail with respect to the fixed rail.

  By the way, the extension mechanism of the guide rail in such a waste transporting apparatus connects the ends of the two wires to a movable rail and an operating means such as a lever, respectively, and the operator performs an extension operation and contraction by the operating means. It is conceivable to configure so that the operation can be performed. However, the use of two wires for the guide rail expansion / contraction mechanism not only complicates the structure, but also impedes the simplification of the process by requiring adjustment of the tension of the wire, thereby reducing the cost. There was also a problem that could interfere.

  Therefore, such an expansion / contraction mechanism of the evacuation / conveying device is structured such that the movable rail is urged to one of the extended state and the contracted state by a spring and is operated to the other state by a pulling operation with one wire. A simplified version was considered. In addition, there is one in which a movable pulley is arranged in an expansion / contraction mechanism to shorten the operation distance of the expansion / contraction operation of the movable rail with respect to the fixed rail, thereby facilitating the operation (see Patent Document 1). Furthermore, there is one in which a spring is disposed on an inner diameter portion of a movable rail formed in a cylindrical shape so that the movable rail is stabilized and compact with respect to a fixed rail (see Patent Document 2).

JP-A-7-79636 JP-A-10-52159

  However, in the waste transporting device shown in Patent Document 1, a movable pulley is used for the guide rail expansion and contraction mechanism, and the operation distance can be shortened. However, the structure of the expansion and contraction mechanism becomes complicated. There was a problem.

  Further, in the guide rail expansion / contraction mechanism shown in Patent Document 2, a fixed rail is formed in a hollow shape, and a movable rail formed in a hollow cylindrical shape is slidably disposed on an inner diameter portion thereof. The part is provided with a compression spring for projecting the movable rail, and it is possible to prevent the waste from being caught by the arranged spring, but the inner diameter part of the movable rail is required to have high machining accuracy. In addition, there is a problem that the structure of the expansion / contraction mechanism becomes complicated and the simplification of the process is hindered, for example, the compression spring is contracted on the inner diameter portion of the movable rail.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a waste transporting device capable of simplifying the structure of a guide rail while preventing the waste from being caught by a spring as much as possible.

The present invention according to claim 1 (see, for example, FIGS. 1 to 10) includes a waste transport chain (21) for transporting waste, a fixed rail (22X) disposed below the waste transport chain, and A guide rail (22) having a movable rail (22Y),
Exhaust conveyance that can be conveyed while holding the waste by the waste conveyance chain (21) and the guide rail (22), and can change the conveyance destination of the waste by extending and contracting the guide rail (22). In the device (20):
It is arranged immediately below the movable rail (22Y), one end is supported by the fixed rail (22X), the other end is supported by the movable rail (22Y), and the guide rail (22) is in a contracted state. comprising a spring (22Z) for biasing such that,
The fixed rail (22X) is fixed to a main rail (22b) having a gate-shaped cross section and a terminal portion (22h) of the main rail (22b) so as to be continuous with the main rail, and has a hollow cylindrical shape. Sub-rails (22d, 22d ') formed on
The movable rail (22Y) is formed by penetrating the inner diameter portion of the sub rail (22d, 22d ′) and the end portion (22g) is bent downward,
The spring (22Z) is disposed immediately below the sub rails (22d, 22d ') through which the movable rail (22Y) is disposed in a contracted state of the guide rail (22), and one end thereof is disposed on the main rail (22b). ) And the other end of the movable rail is supported by the terminal end (22g) of the movable rail.
This is in the waste transporting device (20).

The present invention according to claim 2 (see, for example, FIGS. 4, 5, 7, and 10) includes a collar portion (22 e, 22 e ′) at a terminal portion of the sub rail (22 d, 22 d ′),
Lying in straw discharge conveying device (20) according to claim 1, wherein.

  Note that the reference numerals in the parentheses are for comparison with the drawings, but this is for convenience to facilitate understanding of the invention and has no influence on the description of the claims. It is not a thing.

  According to the first aspect of the present invention, since the spring that biases the guide rail so as to be in a contracted state is disposed immediately below the movable rail, it is possible to prevent the waste from being caught by the spring as much as possible. However, it is possible to provide a simple configuration in which one end is supported by the main rail and the other end is supported by the movable rail, and the structure of the guide rail can be simplified.

In addition , the spring is supported at the end portion of the movable rail formed by bending downward, and is also supported at the end portion of the main rail, so that it is parallel to the movable rail even when the guide rail is extended. Although it is possible to extend so as to prevent the waste from being caught by the spring as much as possible, a simple configuration can be achieved and the structure of the guide rail can be simplified.

According to the second aspect of the present invention, since the end portion of the sub rail is provided with the flange, the movable rail is pulled out by sandwiching the waste between the movable rail and the waste transport chain when the guide rail contracts. Can be prevented. As a result, the transport position of the waste when the guide rail is contracted can be stabilized, and clogging with the cutter and the uneven cutting length of the waste can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the combine 1 according to the present embodiment has a traveling machine body 2 supported by the left and right crawler traveling devices 4R and 4L, and is connected to the traveling machine body 2 so as to be movable up and down. The pre-processing part 3, the threshing part 10, and the driver's seat part 5 are comprised.

  The traveling machine body 2 includes a driver seat portion 5 having a seat 6 on the right front side, a Glen tank 7 for temporarily storing grains on the rear side of the driver seat portion 5, and a rear portion of the Glen tank 7. And a discharge auger 8 having a long cylinder which is erected substantially vertically and is rotatable. Further, a threshing unit 10 for threshing the transported cereals is arranged on the left side of the traveling machine body 2, and behind the threshing unit 10, a waste transporting device 20 and a waste processing unit 30 described later in detail. Is arranged.

  The pretreatment unit 3 includes a divider 42 for weeding the culm and a culm raising device 41, and a culm conveying device or the like is provided behind the pretreatment unit 3. . The culm that has been raised and harvested by the culm pulling device 41 in the pre-processing unit 3 is transferred to a threshing feed chain 45 (see FIGS. 2 and 3) whose outer side is covered with a cover 45a via the culm transporting device. It is taken over and supplied to the threshing unit 10.

  As shown in FIGS. 2 and 3, the threshing unit 10 is rotatably arranged and has a handling cylinder 11 provided with a large number of tooth handling teeth 12, and a receiving net (located below the handling cylinder 11). In a sorting air passage formed by a handling chamber 13 having a suction fan 15 disposed on the rear side of the handling chamber 13, the suction fan 15, a tang fan (not shown), and the like. And a rocking sorting device (not shown) for sorting sorted items such as grains and swarf discharged from the handling chamber 13 by swinging in the front-rear direction, and transported by the above-described grain transporting device. Threshing and sorting of cereals that have been done. The grain threshed and selected by the threshing unit 10 is lifted and transferred and temporarily stored in the Glen tank 7, and the stored grain is carried out of the machine by the discharge auger 8. On the other hand, the cereal after being threshed by the threshing unit 10 is transported to the rear part of the machine body by the waste transporting device 20 and supplied to the waste processing unit 30.

  The waste disposal unit 30 includes a cutter case 35, a rotary switching unit 31 including a rear switching plate 33a and a front switching plate 33b disposed on an upper surface portion of the cutter case 35, a front rotary blade 31a, and a rear rotary blade 31b. And a diffusion spiral 32.

  The rear switching plate 33a is pivotable upward from a reference position that is inclined so that the rear is lowered, with a rear pivot fulcrum shaft 55 disposed in the left-right direction at the rear portion of the rejection processing unit 30 as a pivot. It is configured. The front switching plate 33b is rotatable downward from a reference position inclined so that the rear is lowered, with a front rotation fulcrum shaft 54 disposed in the left-right direction at the front portion of the rejection processing unit 30 as a rotation fulcrum. It is configured. In FIG. 2, the rear switching plate 33 a and the front switching plate 33 b are rotated upward and the front switching plate 33 b is rotated downward. FIG. 3 shows an open state in which the conveyed waste is received. FIG. 3 shows a closed state in which the rear switching plate 33a and the front switching plate 33b are both set to the reference position.

  The rotary blade unit 31 is a disk-shaped front rotary blade that is attached to a front rotary blade shaft 31c that is rotatably supported in the cutter case 35 so as to be rotatable in the left-right direction with a predetermined interval. 31a and a rear rotary blade shaft 31d that is rotatably supported in the cutter case 35 so as to be parallel to the front rotary blade shaft 31c and to be driven to rotate rearward, corresponding to each of the front rotary blades 31a. A plurality of disc-shaped rear rotary blades 31b, and the waste introduced into the cutter case 35 is scraped by the front rotary blade 31a and the rear rotary blade 31b which are driven to rotate in opposite directions, respectively. It is configured to be cut as described above.

  The diffusion spiral 32 is a helical conveying device arranged in the lower part of the cutter case 35 so as to extend in the left-right direction of the machine body. The diffusion spiral 32 receives a cutting piece (cutting blade) of the waste cut by the rotary blade unit 31 and receives the left-right direction. Each of them is diffused and conveyed, dispersed without being concentrated in a part, and discharged outside the apparatus.

  Next, the waste transporting device 20 will be described with reference to FIGS.

  The waste transporting device 20 sandwiches the waste between the waste transporting chain 21 that transports the waste handed over from the threshing feed chain 45 and the waste transporting chain 21 that is disposed below the waste transporting chain 21. And a guide rail 22 for the purpose.

  As shown in FIGS. 2, 3, 6, 8, and 9, the waste transport chain 21 includes a driving sprocket (not shown) disposed on the front side, a driven sprocket 21 b disposed on the rear side, and a protrusion. And a conveying chain 21c wound around the drive sprocket and the driven sprocket 21b. In addition, the waste transport chain 21 is disposed obliquely from the position at the transport end portion of the threshing feed chain 45 on the left side of the machine body, toward the right side of the machine as it goes rearward, to the position near the rear of the machine body. Has been. Further, the evacuation transport chain 21 is provided with a wrapping prevention guide 21a for preventing the wrapping of the evacuation at the rear end.

  As shown in FIGS. 4 and 5, the guide rail 22 includes a front support portion 24, a rear support portion 23, a fixed rail 22X supported by the front support portion 24 and the rear support portion 23, and the fixed rail 22X. The movable rail 22Y is arranged so as to be extendable and contracted, and the fixed rail 22X and the spring 22Z each supported at both ends by the movable rail 22Y are provided.

  The front support portion 24 includes a front base bracket 24a serving as a mounting portion for a frame (not shown), a front rail bracket 24c serving as a mounting portion for the fixed rail 22X, and both ends of the front base bracket 24a and the front rail bracket 24c. And a boot 24b incorporating a spring with a fixed portion. The rear support portion 23 includes a rear base bracket 23a serving as a mounting portion for the dust chamber horizontal frame 49 (see FIGS. 2, 3 and 6), a rear rail bracket 23c serving as a mounting portion for the fixed rail 22X, and the rear The side base bracket 23a and the rear rail bracket 23c are configured by a boot 23b incorporating springs each having both ends fixed to each other.

  The fixed rail 22X has a gate shape in cross section and a front main rail 22a connected to the front rail bracket 24c of the front support portion 24 by a pin 26, and a rear rail bracket in the cross section gate shape and the rear support portion 23. The rear main rail 22b connected to the pin 23c by a pin 25, a hollow cylindrical shape, a front sub rail 22c that slidably supports the movable rail 22Y at the inner diameter portion, and a hollow cylindrical shape, The rear sub rail 22d that slidably supports the movable rail 22Y and the start end rail 22f disposed at the start end portion of the front main rail 22a.

  The front rail 22a, the rear main rail 22b, the front subrail 22c, the rear subrail 22d, and the start end rail 22f are integrally fixed to the fixed rail 22X by welding. In order to prevent catching, it has a continuous shape. Further, as shown in FIG. 7, the rear sub-rail 22d is disposed so as to extend from the upper surface portion side of the rear main rail 22b, and a spring 22Z is disposed below the rear sub-rail 22d. Further, the rear sub-rail 22d has a shape having a protruding portion, that is, a flange portion 22e, whose upper side protrudes as compared with the lower side at the terminal portion.

  As shown in FIGS. 4 and 5, the movable rail 22Y is a shaft-like member that is slidably disposed in the inner diameter portion of the front subrail 22c and the rear subrail 22d of the fixed rail 22X. The guide rail 22 is in a contracted state when it is housed inside the fixed rail 22X, and the guide rail 22 is in an extended state when the movable rail 22Y protrudes rearward. That is, the guide rail 22 is configured to be extendable and retractable by being able to take a state in which the movable rail 22Y is housed inside the fixed rail 22X and a state in which the movable rail 22Y protrudes rearward from the end portion of the fixed rail 22X. . In addition, the movable rail 22Y is connected to a wire 28 for extending and contracting in the vicinity of the start end (front) portion, and a terminal end (rear) portion 22g is bent downward.

  The wire 28 having one end connected to the movable rail 22Y is guided by a guide tube 28a fixed by a fixing member 28b integrally fixed to the front main rail 22a of the fixed rail 22X by welding, while the other end. Is connected to a switching arm 56 of a link mechanism 50 described later.

  The springs 22Z are respectively supported by the end portion 22h of the rear main rail 22b and the end portion 22g of the movable rail 22Y at a position directly below the rear subrail 22d of the fixed rail 22X, and the movable rail 22Y is fixed. It arrange | positions so that it may urge in the direction accommodated in the inside of the rail 22X, ie, the direction used as the contracted state of the guide rail 22. FIG. Further, since the spring 22Z is formed by bending the end portion 22g of the movable rail 22Y downward, even when the guide rail 22 is extended, the spring 22Z is directly below the movable rail 22Y and with respect to the movable rail 22Y. Extend so as to be parallel.

  Next, the link mechanism 50 between the waste transporting device 20 and the waste processing unit 30 will be described with reference to FIGS. 8 and 9.

  The link mechanism 50 is disposed on the right side surface of the cutter case 35 in the left-right direction of the machine body, and is disposed so as to be rotatable integrally with the rear rotation fulcrum shaft 55 of the post-placement switching plate 33a. A shaft arm 51, a front pivot shaft arm 53 disposed so as to be pivotable integrally with the front pivot fulcrum shaft 54 of the front switching plate 33b, and the rear pivot shaft arm 51 and the front pivot shaft arm 53. A connecting rod 52 to be connected, a switching arm 56 having a switching lever 56a formed in a leaf spring shape, and the like are provided. The switching arm 56 is connected so that one end thereof can rotate integrally with the rear rotation fulcrum shaft 55, and the other end is connected to the wire 28.

  The right side surface of the cutter case 35 is provided with a switching plate 57 disposed so as to intersect the switching arm 56 in a side view, and the switching plate 57 is formed with notches 57a and 57b. ing.

  That is, as shown in FIG. 8, when the switching lever 56a of the switching arm 56 is locked to the notch 57b of the switching plate 57, the link mechanism 50 moves the rejection processing unit 30 to the rear switching plate. 33a is rotated upward, and the front switching plate 33b is rotated downward. On the other hand, the guide rail 22 is not pulled by the switching arm 56, so that the spring 22Z is attached. The movable rail 22 </ b> Y is configured to be in a contracted state in which the movable rail 22 </ b> Y is stored.

  As shown in FIG. 9, the link mechanism 50 is configured such that when the switching lever 56 a of the switching arm 56 is locked to the notch 57 a of the switching plate 57, the rejection processing unit 30 is replaced with the rear switching plate. 33a and the front switching plate 33b are both in the closed state in which they are at the reference position, while the guide rail 22 is in the extended state in which the movable rail 22Y protrudes when the wire 28 is pulled by the switching arm 56. It is configured.

  Next, the operation of the combine 1 according to the present embodiment will be described.

  As shown in FIG. 1, the combine 1 conveys the cereals that have been raised by the pretreatment unit 3 and raised by the device 41 by the threshing feed chain 45 via the cereal conveyance device, and the threshing unit 10 is supplied. As shown in FIGS. 2 and 3, the threshing that has been threshed by the threshing unit 10 is transported by the threshing feed chain 45 and taken over by the scouring and conveying device 20. The waste handed over to the waste transporting device 20 is transported while being sandwiched between the waste transport chain 21 and the guide rail 22. At this time, the guide rail 22 is pressed upward, that is, against the waste transporting chain 21 by a spring built in the boot 24b of the front support portion 24 and a spring built in the boot 23b of the rear support portion 23. Thus, the waste is reliably clamped with the waste transporting chain 21.

  Thereafter, the waste is sandwiched between the waste transport chain 21 and the guide rail 22 and transported to the rear side. Here, when performing the operation of processing the waste in the waste disposal processing unit 30, as shown in FIGS. 2 and 8, the switching lever 56a of the switching arm 56 is moved forward (right side in the figure). And the rear switching plate 33a and the front switching plate 33b of the evacuation processing unit 30 are opened by engaging the switching lever 56a with the notch 57b of the switching plate 57.

  At this time, as described above, the guide rail 22 is in a contracted state, and the conveyed waste is dropped into the cutter case 35 and is cut by the rotary blade unit 31, and a cut piece (cutting blade) is formed via the diffusion spiral 32. It is discharged outside the machine. At this time, since the spring 22Z is disposed immediately below the rear sub-rail 22d, the conveyed waste is transported to the end of the guide rail 22 without being caught by the spring 22Z as much as possible.

  Further, the movable rail 22Y of the guide rail 22 in the contracted state is covered at the upper side by the flange portion 22e of the rear subrail 22d, and when the waste is clamped by the waste transport chain 21 and the fixed rail 22X, The flange 22e prevents the movable rail 22Y from coming into contact with the waste. As a result, the waste is clamped by the movable rail 22Y and the waste transport chain 21, and the movable rail 22Y is prevented from being pulled out rearward by this clamping force.

  On the other hand, when the operation of discharging the waste to the rear side of the machine body without performing the waste disposal processing unit 30 is performed, as shown in FIGS. 3 and 9, the switching lever 56a of the switching arm 56 is switched to the switching plate. 57 is released from the cutout portion 57b, and is rotated rearwardly (to the left in the drawing), and the switching lever 56a is locked to the cutout portion 57a, whereby the waste disposal processing portion 30 is switched back. The plate 33a and the front switching plate 33b are closed.

  At this time, as described above, the guide rail 22 is in an extended state, and the waste is transported to the end portions of the waste transport chain 21 and the guide rail 22 and is discharged to the outside as it is. At this time, since the spring 22Z is arranged immediately below the movable rail 22Y, the conveyed waste is transported to the end of the guide rail 22 without being caught by the spring 22Z as much as possible.

  Further, when the working state of the waste disposal unit 30 is switched from the open state to the closed state, the rear switching plate 33a and the front switching plate 33b rotate, and at the same time, the movable rail 22Y springs against the fixed rail 22X. The extension operation is performed against the urging force of 22Z, that is, the force when the rear switching plate 33a having its own weight is larger than that of the front switching plate 33b and the urging force of the spring 22Z cancel each other. Therefore, the load at the time of operation can be reduced.

  As described above, according to the waste transporting device 20 according to the present invention, the spring 22Z that urges the guide rail 22 to be in a contracted state is disposed directly below the movable rail 22Y. Although it is possible to prevent the hook from being caught as much as possible, the guide rail 22 can have a simple configuration in which one end is supported by the rear main rail 22b and the other end is supported by the movable rail 22Y. The structure can be simplified.

  The spring 22Z is supported by the end portion 22g of the movable rail 22Y formed by bending downward, and is also supported by the end portion 22h of the rear main rail 22b. Therefore, the spring 22Z is movable even when the guide rail 22 is in an extended state. It can extend so as to be parallel to the rail 22 </ b> Y, and can prevent the waste 22 from being caught by the spring 22 </ b> Z as much as possible. It can be simplified.

  Further, since the end portion of the rear sub-rail 22d is provided with the flange portion 22e, the movable rail 22Y is pulled out by sandwiching the waste between the movable rail 22Y and the waste transporting chain 21 when the guide rail 22 contracts. Can be prevented. Thereby, the conveyance position of the waste when the guide rail 22 is contracted can be stabilized, and clogging with the cutter and the cut length of the waste can be prevented from becoming uneven.

  In the present embodiment, the shape of the rear subrail 22d provided with the flange portion 22e has been described as a shape obtained by obliquely cutting a cylindrical member. However, the present invention is not limited to this, and as shown in FIG. The present invention can also be applied to the rear subrail 22d ′ provided with the flange portion 22e ′ shaped like a stepped member.

  Further, the switching lever 56a has been described as being operated when switching the working state of the waste transporting device 20 and the waste processing unit 30, but for example, the switching lever 56a is connected to the driver's seat 5 via a wire or the like. The present invention can also be applied to a configuration in which the operator can perform a switching operation at the driver's seat portion 5 by being linked to the lever arranged in FIG.

  Further, in the working state where the guide rail 22 is in the extended state, it has been described that the conveyed waste is discharged as it is to the rear side of the machine body. For example, the conveyed waste is converged and discharged. The present invention can be applied even to a combiner equipped with a waste disposal processing unit (dropper) that performs transporting waste disposal and a waste disposal processing unit (knotter) that binds and ejects the transported waste as a bundle. it can.

The side view which shows the combine which concerns on this invention. Side surface sectional drawing which shows the waste conveying apparatus and waste processing part when a guide rail is a contracted state. Side surface sectional drawing which shows the waste conveying apparatus and waste processing part when a guide rail is an expansion | extension state. The side view which shows a guide rail. The exploded view which shows a guide rail. The front view which shows a waste transport apparatus. The side view which shows the terminal part of a guide rail. FIG. 6 is a perspective view showing a waste transporting device and a waste disposal processing unit when the guide rail is in a contracted state. FIG. 6 is a perspective view showing a waste transporting device and a waste disposal processing unit when the guide rail is in an extended state. The side view which shows the termination | terminus part of the guide rail which concerns on another Example.

Explanation of symbols

20 waste transport device 21 waste transport chain 22 guide rail 22b main rail (rear main rail)
22d, 22d 'sub rail (rear sub rail)
22e, 22e ′ collar 22h main rail end 22g movable rail end 22X fixed rail 22Y movable rail 22Z spring

Claims (2)

A waste transport chain that transports the waste; and a guide rail that is disposed below the waste transport chain and includes a fixed rail and a movable rail.
In the waste transporting apparatus that transports the waste while sandwiching the waste by the waste transport chain and the guide rail, and can change the transport destination of the waste by extending and contracting the guide rail.
A spring disposed immediately below the movable rail, having one end supported by the fixed rail and the other end supported by the movable rail, and urged so that the guide rail is contracted ;
The fixed rail includes a main rail having a cross-sectional gate shape, and a sub rail formed in a hollow cylindrical shape, which is fixed to a terminal portion of the main rail so as to be continuous with the main rail.
The movable rail is formed by penetrating the inner diameter portion of the sub rail and bending the terminal portion downward.
The spring is disposed immediately below the sub rail through which the movable rail penetrates in the contracted state of the guide rail, one end is supported by the end of the main rail, and the other end is the end of the movable rail. Supported by the department,
This is a waste transporting device. It is provided with a collar at the end of the sub rail.
The waste transporting apparatus according to claim 1 .

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