JP2003047322A - Operation structure of farm implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straw transport device-operating structure enabling the suitable action of the energizing force of a coil spring which energizes to hold the operation position of an operation lever. SOLUTION: An operation lever 24 for switching an extendable rail portion into a state corresponding to a working form is swingably disposed on a support shaft 19, and engaging grooves for setting the operation position of the operation lever 24 at a plurality of stages is disposed. A coil spring 27 for energizing an operation lever 24 in the direction for engaging with the engaging grooves is fit to the support shaft 19 of the operation lever 24, and a plate-like portion 24b for inhibiting the radially downward movement of the coil spring 27 to lift and hold the coil spring 27 is formed on the operation lever 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with an operation lever for switching various devices to a drive state corresponding to a work mode so as to be swingable on a support shaft, and the operation guide groove of the operation lever is provided with the operation lever. An engagement holding portion for setting the operation position in a plurality of stages is provided, and a coil spring for urging the operation lever in a direction of engaging with the engagement holding portion is externally fitted to a spindle of the operation lever. It relates to the operating structure of a farm work machine.

[0002]

2. Description of the Related Art In the case where a coil spring is used to hold and urge an operating lever toward an engaging and holding portion, the coil spring is simply externally mounted on a spindle of the operating lever.

[0003]

In the case of adopting the above-mentioned structure, when the coil spring moves downward with respect to the spindle from the state where the axis of the spindle and the axis of the coil spring coincide with each other, the axis of the spindle is changed to the axis. The deviation causes the urging force on the operation lever to change. In other words, since the portion of the coil spring acting on the upper and lower sides of the operating lever's support shaft is different, when the axis of the coil spring lowers with respect to the axis of the supporting shaft, a deviation occurs. The positions of the coil springs acting on the upper part and the lower part with the support shaft sandwiched between them both move downward, and the position of the operation lever support shaft and the operation lever lower part is reduced. The distance between the position where the coil spring acts and the position where the coil spring acts on the portion located above the operating lever and the position where the coil spring acts becomes narrower. Then, even if the biasing force of the coil spring acting on the portion located above and the portion located below the support shaft of the operation lever is the same, the distance from the support shaft of the operation lever to the point of action is different. Therefore, the difference appears in the moment acting on the operation lever, and the moment acts in the direction in which the operation lever separates from the engagement holding portion. An object of the present invention is to appropriately apply an urging force of a coil spring to effectively function an engagement holding function, and to further effectively utilize it without changing a basic location such as a ring diameter of the coil spring. It is about providing what you can.

[0004]

[Structure] The characteristic structure of the present invention according to claim 1 is such that an operation lever for switching various devices to a drive state corresponding to a work mode is swingably operated on a support shaft, and A coil spring for providing an operation holding groove for setting the operation position of the operation lever in a plurality of steps in an operation guide groove of the operation lever, and for urging the operation lever in a direction of engaging the engagement holding portion. Is externally fitted to the support shaft of the operation lever, and the operation lever is provided with a lifting holding portion for restricting the radial movement of the coil spring and for lifting and holding the coil spring. , And the effects are as follows. [Operation and Effect] That is, since the lifting holding portion is formed on the operation lever, it is possible to prevent the coil spring from dropping and moving in the radial direction. As a result, it is possible to suppress the deviation of the axis line between the coil spring and the support shaft, and to appropriately apply the biasing force. Then, the lifting and holding portion not only prevents the axis line of the coil spring from deviating from the axis line of the operation lever support shaft, but rather lifts the coil spring and switches it to a state in which it is positioned above the operation lever support shaft. be able to. By changing in this way, the positions of the coil springs acting on the upper portion and the lower portion sandwiching the support shaft of the operating lever are both moved upward.
The distance between the spindle of the operating lever and the position where the coil spring acts on the portion located below the operating lever is narrowed, while the coil spring acts on the spindle of the operating lever and the portion located above the operating lever. The distance from the position will be wider. Then, the biasing moment with respect to the portion located above the operation lever increases, the engaging force with respect to the engagement holding portion is increased, and the position holding state of the engagement holding portion can be stabilized. Therefore, without changing the spring constant of the coil spring,
The urging action of engaging the operation lever with the engagement holding portion can be enhanced.

[Structure] The characterizing structure of the present invention according to claim 2 is to provide a waste conveying device for receiving and treating the treated grain culms conveyed by the feed chain toward the waste treating device. The straw processing device is composed of a plurality of types of processing units, and in order to change the discharge position of the conveyed and discharged straw for each of the processing units from the discharging and conveying device, the switching operation lever is pivotally operated on the spindle. In an operation structure of an agricultural working machine that is freely provided, an engagement holding portion that sets an operation position of the operation lever in a plurality of steps is provided in an operation guide groove of the operation lever, and the engagement holding portion is engaged with the engagement holding portion. A coil spring for urging the operation lever in a fitting direction is externally fitted to a spindle of the operation lever, and the coil spring is lifted on the operation lever by restricting its radial drop movement. There in that forming the holding portion lift to maintain its action and effect are as follows. [Operation and effect] The same operation and effect as the operation and effect of the invention according to claim 1 are exhibited. In particular, since the operating lever is operated in accordance with the processing mode of the waste processing device, it does not change frequently during work, such as when switching the traveling transmission, so the engagement hold at the operating position is maintained. The state needs to be solid. From this point as well, the biasing force of the coil spring could be effectively utilized, and a useful operating structure could be constructed.

[Structure] The characterizing structure of the present invention according to claim 3 is to provide a straw conveying device for receiving and treating the treated grain culms conveyed by the feed chain toward the straw treating device. A sandwiching chain and a sandwiching rail facing the sandwiching chain are provided in order to sandwich the waste straws in the waste straw conveying device, and the waste straw treating device is composed of a plurality of types of processing units. An expansion / contraction rail part that expands / contracts along the moving direction of the sandwiching chain in order to change the delivery / discharging discharge part for each of the individual processing parts, and the expansion / contraction rail part while allowing the expansion / contraction movement of the expansion / contraction rail part. An operation structure of an agricultural work machine in which the sandwiching rail is formed with a main body rail portion that holds a rail, and a rail operating device that extends and retracts the telescopic rail portion is provided. An operating lever for operating the rail operating device is swingably provided on a support shaft, and an engaging holding portion for setting an operating position of the operating lever in a plurality of stages is provided in an operation guide groove of the operating lever, A coil spring for urging the operation lever toward the direction of engaging with the engagement holding portion is externally fitted to a support shaft of the operation lever, and the coil spring is dropped on the operation lever in the radial direction. It is in the point of forming a lifting and holding part that regulates the movement and holds and holds the lifting, and its action and effect are as follows. [Operation and effect] The same operation and effect as the operation and effect of the invention according to claim 1 are exhibited. In particular, since the operating lever is operated in accordance with the processing mode of the waste processing device, it does not change frequently during work, such as when switching the traveling transmission, so the engagement hold at the operating position is maintained. The state needs to be solid. Further, since the holding rail can be expanded and contracted in order to change the discharge site from the waste transfer device to the processing unit, it is not necessary to separately provide a device for taking out the waste transfer device from the waste transfer device.

[Structure] The characterizing structure of the present invention according to claim 4 is to provide a straw conveying device for receiving and treating the treated grain culms conveyed by the feed chain toward the straw treating device. A sandwiching chain and a sandwiching rail facing the sandwiching chain are provided in order to sandwich the waste straws in the waste straw conveying device, and the waste straw treating device is composed of a plurality of types of processing units. An expansion / contraction rail part that expands / contracts along the moving direction of the sandwiching chain in order to change the delivery / discharging discharge part for each of the individual processing parts, and the expansion / contraction rail part while allowing the expansion / contraction movement of the expansion / contraction rail part. The nipping rail is formed with the main body rail portion that holds the shavings, and a shredding device for shredding and processing the waste as a processing part of the waste processing device is provided. An operation structure of an agricultural machine equipped with an opening / closing cover for allowing waste to pass through the mouth in a closed position and introducing the waste into the shredding device in an open position, and a rail operating device for operating the telescopic rail portion to extend and retract. An opening / closing operation device for opening / closing the opening / closing cover is provided, and an operation lever for operating the rail operation device and the opening / closing operation device is provided on a support shaft so as to be swingable, and the support shaft is provided on the rail operation device. A rail interlocking member that interlocks and an opening and closing interlocking member that interlocks with the opening and closing operation device are swingably supported while sandwiching the operation lever, and the operation lever is orthogonal to the swinging direction around the support shaft. The operation lever is selectively engaged with the rail interlocking member and the opening / closing interlocking member by a swinging operation in a direction along the axis of the support shaft, and the one interlocking member selectively engaged with the operation lever is provided. Engagement for swinging around an axis to open / close the telescopic rail portion or the opening / closing cover, and engaging the operation guide groove of the operation lever to set the operation position of the operation lever in multiple stages. A coil spring for urging the operating lever toward the direction of engaging with the engaging and holding portion is provided on the support shaft by being fitted onto the support shaft, and the operating lever is provided with the coil spring in a radial direction thereof. The lifting holding part is formed so as to regulate the falling movement to and to hold the lifting holding part, and its action and effect are as follows. [Operation and effect] The same operation and effect as the operation and effect of the invention according to claim 1 are exhibited. In particular, since the operating lever is operated in accordance with the processing mode of the waste processing device, it does not change frequently during work, such as when switching the traveling transmission, so the engagement hold at the operating position is maintained. The state needs to be solid. Further, in order to switch the discharge position to each processing unit, not only the expansion / contraction position of the expansion / contraction rail unit but also the opening / closing operation of the opening / closing cover for covering the shredding device needs to be performed. , The respective operating levers were linked to the rail operating device and the opening / closing operating device to perform the switching operation, but as described above,
Since both operating devices can be operated with a single operating lever, the operating system can be simplified and the complexity of the operation can be eliminated. As a concrete operation form by the operation lever,
It looks like this: That is, when the operation lever is operated in the direction along the axis of the support shaft which is orthogonal to the swinging direction around the support shaft, the operation lever engages with either the rail interlocking member or the opening / closing interlocking member. . When the engagement state is maintained and the oscillating drive is performed around the support shaft orthogonal to the operation direction, the telescopic rail portion or the open / close cover can be opened / closed.

[Structure] In the characterizing feature of the present invention according to claim 5, in the characterizing feature of the invention according to claim 4, the lifting and holding part is formed by bending a base end part externally fitted to a support shaft of the operation lever. The plate-like portion is cantilevered toward the rail interlocking member, and the tip of the plate-like portion is provided in the vicinity of the rail interlocking member. , And the effects are as follows. [Operation and effect] The same operation and effect as those of the invention according to claim 4 are obtained. The operation lever is configured to swing in both directions orthogonal to each other, i.e., a state of swinging about the spindle axis and a state of swinging along the spindle axis direction. On the other hand, there is room for swinging around a third axis that is further orthogonal to the axis, that is, the axis of the main body of the operation lever (the axis along the vertical direction). When the so-called operation lever performs yawing operation around the axis of the main body, it causes a twist when performing a selection operation along the axis of the support shaft. On the other hand, since the plate-shaped portion provided to lift the coil spring is extended to a position approaching the rail interlocking member, even if the operating lever is in the state of performing the yawing operation, It is possible to prevent the yawing operation from being suppressed because the tip portion of the plate-shaped portion abuts the rail interlocking member, and a twist is generated.

[Structure] According to a sixth aspect of the present invention, in the invention according to the first to fifth aspects, the coil spring is linked to the swing operation of the operating lever around the support shaft, and the support shaft is rotated around the support shaft. It is configured so as to oscillate, and its action and effect are as follows. [Operation and effect] The same operation and effect as the operation and effect of the invention according to claim 1 are exhibited. In particular, since the operating lever is operated in accordance with the processing mode of the waste processing device, it does not change frequently during work, such as when switching the traveling transmission, so the engagement hold at the operating position is maintained. The state needs to be solid. In addition, since the coil spring oscillates in conjunction with the operation lever, the positional relationship between the coil spring and the operation lever does not change,
The urging force of the coil springs could be effectively utilized and a useful operating structure could be constructed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a cutting pretreatment device X that causes planted culms and cuts and conveys the cut culms to the rear of the machine uses a crawler traveling device Y to run a traveling machine body 8 by itself. Is operably connected to the front part of the plant, and the grain culm delivered from the pre-mowing treatment device X is threshed by the handling barrel 3 while being pinched and conveyed by the threshing feed chain 1, and the threshing waste is removed by the shredding device 5 And a threshing device Z is provided so as to be supplied to a straw treating device including the straw dropper 6 and the like, and a grain tank T for storing threshing grains from the threshing device Z is provided in the traveling machine body 8 to configure a combine. There is.

As shown in FIGS. 1 and 2, as a device for conveying the treated culms to the straw treating device, the threshing feed chain 1 sandwiches the threshing waste carried out rearward from the handling chamber 2 and falls sideways. In this state, a waste conveying device 9 is provided which conveys to the rear of the machine while moving it toward the tip side. As shown in FIG.
The straw-discharging / transporting device 9 is configured to include a sandwiching / transporting device 10 that clamps the root side of the straw-discharging device, and a locking transporting device 4 that locks on the tip side.

As shown in FIGS. 15 and 16, a chain transmission device 30 for input is provided along the locking and conveying device 4, and the chain transmission device 30 introduces a driving force from the threshing device. , An input bevel gear mechanism 31 provided at an intermediate position, an output sprocket 33 attached to an output shaft 32 of the input bevel gear mechanism 31, and an input sprocket 3 extending the drive shaft 4A of the locking and conveying device 4 and attached to its extension end.
4 and a transmission chain 35 spanning the input / output sprockets 34, 33.

As shown in FIGS. 15 and 16, the first chain tightener 36 for applying a tension force to the transmission chain 35 near the output sprocket 33 acts on the transmission chain 35 and near the input sprocket 34. A second chain tightener 37 is provided. The second chain tightener 37 is formed in a wavy shape, and has a transmission chain 35 at an intermediate portion protruding forward from both end portions.
Both ends mounting portion 37 that receives the curl and is terminated in a curl shape
The heads a and 37a are fixed to the locking conveyance frame 4B with a headed pin. In the locking transport frame 4B,
Mounting portions 4C, whose positions can be changed, are formed at a plurality of positions along the rotational movement direction of the transmission chain 35.
By using C, the mounting position of the second chain tightener 37 is changed so that an optimum tension force is applied.

As shown in FIG. 2, a waste shredding device provided with a pair of cutter shafts 5a, 5a, etc., as a processing portion constituting the waste disposal device, below the conveyance end side of the waste conveyor device 9. 5 and a straw dropper 6 on the further rear side of the waste shredder 5, and a long straw discharge path 7 to the dropper 6 is provided. Although the waste shredding device 5 and the dropper 6 are provided as the processing units constituting the waste disposal device, the waste shredding device 5 and the waste binding device (not shown) may be used together.

The sandwiching and conveying device 10 will be described. Figure 4
As shown in FIG. 3, the sandwiching and conveying device 10 is supported by a chain support frame 10a fixed to the threshing machine body, and a guide body 11 is provided at the conveyance start end side to guide the chain, and the guide body 11 and the conveyance end side are provided. An endless rotating chain (an example of a sandwiching chain) 13 with a grain culm conveying protrusion wound around a drive sprocket 12 and a sandwiching rail 14 located below the conveyor working side of the endless rotating chain 13. is there.

The main body rail portion 14a of the nipping rail 14 on the conveying start side is supported at both ends by support rods 15 and 15 so as to be movable in the perspective direction with respect to the endless rotating chain 13 and is not supported by the support rods 15 and 15. It is biased upward by the biasing spring 17 that is fitted. Reference numeral 38 in the figure denotes a stock spring support portion made of a leaf spring, which extends from the chain support frame 10a that supports the holding rail 10.

The rail operating device A for the holding rail 14 will be described. As shown in FIG. 4, the gripping rail 14 includes a main body rail portion 14a on the transport start end side and the main body rail portion 1a.
4a, the main body rail portion 14a is configured to extend and retract along the axial direction of the main body rail portion 14a. A guide roller 16 is provided at the end position of the main body rail portion 14a to smoothly move the telescopic rail portion 14b, while the telescopic rail portion 14b is slid at the front and rear end positions of the telescopic rail portion 14b. Two telescopic drive wires 18 for connecting the two are respectively screw-connected. The other ends of the two extension / contraction drive wires 18 are wound around a drive pulley 26 that is driven in conjunction with the extension / contraction operation lever 24 and connected as a single wire, and are connected to the guide roller 16 described above. It is guided and supported in a hanging state.

As shown in FIGS. 2 to 4, a ceiling portion of a case 5A for accommodating the waste shredding device 5 is formed into an openable / closable cover 5c, and an opening 5b is provided in the open / close cover 5.
The opening / closing operation device B of the opening / closing cover 5c can be operated by the above-mentioned expansion / contraction operation lever 24. That is, the opening / closing device B includes a swing arm 5d that swings integrally with the open / close cover 5c, and a single open / close wire connected to the swing arm 5d via a stroke absorbing spring 5e. And 25.

The structure of the operating lever 24 will be described.
As shown in FIGS. 5 and 6, an operating lever 24 for operating the rail operating device A and the opening / closing operating device B is provided on the support shaft 19 so as to be swingable, and the support shaft 19 is interlocked with the rail operating device A. The interlocking member 20 and the opening / closing interlocking member 21 interlocking with the opening / closing operation device B are swingably supported with the operating lever 24 sandwiched therebetween, and the operation lever 24 is a support shaft 19 orthogonal to the swing direction around the support shaft. The operation lever 24 is selectively engaged with the rail interlocking member 20 and the opening / closing interlocking member 21 by the swinging operation in the direction along the axis of It is configured so that it is rockably driven around the support shaft to open / close the telescopic rail portion 14b or the open / close cover 5c.

The structure of the operating lever 24 will be described in more detail. As shown in FIGS. 5 and 11, the rail interlocking member 20 is formed in a substantially U shape in a front view orthogonal to the axis of the support shaft 19, and both side plate portions formed in the substantially U shape. 20A, 20
Both side plate portions 20A, 20B are rotatably fitted on and supported by the support shaft 19 so that the operation lever 24 is inserted into the inner space of B. Of the both side plate portions 20A, 20B, on the upper end portion of the outer side plate portion 20A located on the outer end side of the support shaft 19, toward the operation lever 24 in parallel to the axis of the support shaft 19,
A pin 20a for linking is provided so as to be able to link with the operation lever 24.

As shown in FIGS. 5 and 6, the outer side plate portion 20.
A plate-shaped fan-shaped gear 22 is fixed to the outer side surface of A and the outer side plate portion 2
The 0A and the fan-shaped gear 22 are integrally swingable around the axis of the support shaft 19. This fan-shaped gear 22 meshes with a driven gear 23 and is configured to drive a drive pulley 26 that is integrally fixed to the driven gear 23. The drive pulley 26 is wound around the extension / contraction drive wire 18 of the rail. It has been hung. From the above, the rail interlocking member 20, the fan-shaped gear 22,
Driven gear 23, drive pulley 26, telescopic drive wire 1
8, the guide roller 16 and the like constitute a rail operating device A.

As shown in FIGS. 5 and 6, an opening / closing interlocking member 21 is arranged together with the rail interlocking member 20, and the opening / closing interlocking member 21 is substantially U-shaped in a front view orthogonal to the axis of the support shaft 19. The inner and outer both side plate portions 21A and 21B are loosely fitted to the support shaft 19, and the open / close interlocking member 21 is swingably supported by the support shaft 19. On the upper end of the inner plate portion 21A, a pin 21a for projecting is provided parallel to the axis of the support shaft 19 toward the operating lever 24 so as to be able to link with the operating lever 24. Opening / closing cover 5c for the pin 21a
The wire ends for opening and closing for opening and closing are connected.

The linkage between the operating lever 24 and the rail interlocking member 20 and the opening / closing interlocking member 21 will be described. As shown in FIGS. 5 and 10, the rail interlocking member 20 and the opening / closing interlocking member 21 arranged so as to sandwich the operation lever 24.
As described above, the pins 20a and 21 for linkage are
a extends toward the operation lever 24, and a long hole 24a for connection is provided at an intermediate portion of the operation lever 24 on an extension line of the pins 20a and 21a for connection. Operating lever 24
Is externally fitted to the support shaft 19 through a long hole 24e, and is configured to be tiltable along the axial direction of the support shaft 19. That is, it is possible to perform a switching operation between a state in which the rail interlocking member 20 can be tilted and a state in which the open / close interlocking member 21 can be tilted, and as shown in FIG. 10B, the rail interlocking member is tilted. The elongated hole 24a formed in the operation lever 24 is externally fitted and engaged with the linking pin 20a. Thus, by swinging the operation lever 24 around the axis of the support shaft 19, the rail interlocking member 20 can be integrally driven, and the telescopic rail portion 14b can be telescopically operated. On the other hand, as shown in FIG. 10A, when the opening / closing interlocking member 21 is tilted, the elongated hole 24a formed in the operation lever 24 is externally fitted and engaged with the linking pin 21a. As a result, the operation lever 24 is moved to the support shaft 1
By swinging about the axis of 9, the opening / closing interlocking member 21 can be integrally driven, and the telescopic rail portion 14b can be telescopically operated.

The structure of the operating lever 24 will be described. Figure 8 ~
As shown in FIG. 11, the base end portion 24A externally fitted to the support shaft 19 of the operation lever 24 is located between the base end portion 24A and the outer side plate portion 20A of the rail interlocking member 20, and the support shaft 19 is provided.
The coil spring 27 externally fitted to the rail interlocking member 20 presses and biases the inner plate portion 20B of the rail interlocking member 20.
The operation lever 24 is bent at a lower end portion of the base end portion 24 </ b> A in a posture along the axial direction of the support shaft 19 to form a plate-shaped portion 24.
b is cantilevered and has a substantially angled shape in a front view. In addition, the support shaft 1 is provided above the plate-shaped portion 24b.
A projection 24c is provided so as to protrude from the base end portion 24A of the operation lever 24 on the opposite side of the coil 9, and the coil portion of the coil spring 27 can be supported from the inside.

The plate-like portion 24b is lifted in such a manner that it is closer to the support shaft 19 as it is closer to the rail interlocking member 20.
The shape of the plate-like portion 24b and the protrusion 24c allow the coil spring 27 to be lifted upward. As a result, as shown in FIG. 8, the coil spring 27 is lifted with respect to the support shaft 19, and the action position of the coil spring 27 with respect to the base end portion 24A of the operating lever 24 is deviated upward from the support shaft 19. Can be in different positions. Therefore, the moment applied to the biasing force that pushes the operation lever 24 against the inner side plate portion 20B of the rail interlocking member 20 can be increased. With such a configuration, even when the circular coil spring 27 is used, the coil spring 27 is lifted by the plate-like portion 24b so that the coil lever 27 acts on the operation lever 24 while being eccentric to the support shaft 19 upward. Even if the spring force is constant, the moment due to the biasing force can be increased. The plate-like portion 24b and the projection 24c are collectively referred to as the lifting and holding portion that regulates the coil spring in the radial direction to hold and hold the coil spring.
Further, since the protrusion 24c raises the coil spring 27, the coil spring 27 is integrally swung even when the operation lever 24 is swung around the support shaft axis.

As shown in FIGS. 8 and 9, the operating lever 2
Since 4 is externally fitted and supported to the support shaft 19 through the elongated hole 24e, the operation lever 24 can be tilted along the axial direction of the support shaft 19 and is orthogonal to the axis of the support shaft 19. The structure is such that yawing is performed around the longitudinal axis P along the operation lever 24 in the direction of the
The closer to the rail interlocking member 20, the closer it is to the support shaft 12, so that the leading end of the plate-shaped portion 24b contacts the rail interlocking member 20 to prevent the yawing operation, and suppress the bending. be able to. Further, even when the operation lever 24 is tilted along the axial direction of the support shaft 19 and linked to the rail interlocking member 20, the plate-shaped portion 24
The distance between the tip of the b and the rail interlocking member 20 is not greatly separated, and the yaw suppressing force is not weakened.

A mode in which the rail operating device A and the opening / closing operating device B are operated by operating the operating lever 24 will be described. As shown in FIGS. 7 to 10, the operation lever 24
A guide groove 28 for guiding the switching operation is formed, and the guide groove 28 is U-shaped and has a plurality of locking positions. That is, the guide groove 28 includes the rail operation groove 28A for operating the rail operation device A, the opening / closing operation groove 28B for operating the opening / closing operation device B, and the neutral groove 28 connecting the both grooves 28A, 28B.
It consists of C and. When the operation lever 24 is tilted to the rail operation groove 28A side in the neutral groove 28C, the operation lever 24 engages with the rail interlocking member 20 and the telescopic rail portion 14b.
Can be extended.

As shown in FIG. 7, the rail operating groove 28A is formed with a plurality of locking grooves 28a as engaging and holding portions for holding the operating position of the operating lever 24. The operating lever 24 has a locking groove 28
It is urged in the direction of locking to a. A bent portion 24d is provided above the base end portion 24A of the operation lever 24, and the bent portion 24d is configured to be hooked and locked in the locking groove 28a to hold the operation position of the operation lever 24. . In the rail operation groove 28A, as shown in FIG.
The dropper operation position a for setting the rail position when adopting the work form with the waste dropper 6 and the waste bundling operation position b on the back side are set, and the open / close operation groove 28B is locked at only one position. The groove 28b is provided, and this position corresponds to the drainage shredding operation position c. Operating lever 24
Is set to the neutral groove 28C, the opening / closing cover 5c maintains the closed state and the telescopic rail portion 14b is in the housed state. If the rail operation groove 28A is selected based on this state, the expansion / contraction rail portion 14b can be extended, and if the open / close operation groove 28B is selected, the open / close cover 5c can be opened.

As shown in FIGS. 7 and 9, the opening / closing operation groove 2
A locking fixing plate 29 is provided along 8B, and a locking piece 24D provided in the middle stage of the operating lever 24 is configured to be engaged and externally fitted to the locking fixing plate 29. More specifically, the locking fixing plate 29 is formed such that the height thereof gradually increases from the portion corresponding to the neutral groove 28C, and the locking fixing plate 29 is formed with the locking piece 24D at the portion corresponding to the shredding operation position c. Operating lever 24
The height is set so as to be inserted between the locking piece 24D and the main body frame 24E so as to be sandwiched by the main body frame 24E.

Since such a configuration is adopted,
As shown in FIG. 9, when the operation is started from the neutral position toward the shredding operation position c, the locking piece 24D does not straddle the locking fixed plate 29, but goes toward the operation lever 24 of the locking fixed plate 29. It comes into sliding contact with the surface and is operated and moved together with the operation lever 24. The bent portion 24d provided in the vicinity of the locking piece 24D also has the locking fixed plate 2 with which the locking piece 24D is in sliding contact.
Similarly, it moves in sliding contact with the facing surface of 9. When the shredding operation position c is slightly over-moved, it reaches the terminal end of the locking fixing plate 29, the contact state of the locking piece 24D is released, and it is moved in a direction orthogonal to the moving direction up to the terminal end. The operation lever 24 is operated to a position where the locking fixing plate 29 can be crossed over, and the locking piece 24D is the body portion 24 of the operation lever 24.
The operation lever 24 is returned to the position where the locking fixing plate 29 is sandwiched together with E. Then, the locking piece 24D suppresses the lateral vibration of the sandwiching operation lever 24 together with the locking fixing plate 29 and the main body portion 24E, and the bending portion 24D.
d contacts the end surface of the locking and fixing plate 29, and the operating lever 24
Is arranged at the shredding operation position c.

In the rail operation groove 28A, as shown in FIG. 7, there is no locking and fixing plate 29, but an engagement groove 28a formed in a sawtooth shape is provided, and the dropper operation position a and the bundling operation position described above are provided. b and are provided. The bent portion 24d is engaged with the engagement groove 28a, and the operation position is set. As described above, the operating lever 24 is biased by the coil spring 27 toward the engaging groove 28a.

The positional relationship between the opening / closing cover 5c and the telescopic rail portion 14b is as follows. That is, when the telescopic rail portion 14b is pulled out in the long state, the telescopic rail portion 14b is positioned to cover the upper side of the opening / closing cover 5c, and when the telescopic rail portion 14b is switched to the shortened state, the upper side of the opening / closing cover 5c is released. Retires and becomes short. The positional relationship between the work form and the telescopic rail portion 14b will be described later.

As shown in FIG. 2, the dropper 6 maintains a swinging type receiving base 6A for receiving the waste discharged from the rear end of the conveying of the waste conveying device 9 and a receiving posture of the receiving base 6A. In addition, an urging spring (not shown) is provided in order to allow the receiving stand 6A to swing downward when the amount of discharged straw reaches a set load and to drop the discharged straw on the receiving stand 6A. When the discharge of the waste is completed, the receiving base 6A is returned to the receiving posture by the biasing spring.

As shown in FIG. 2, the waste shredding device 5 is
Each of the cutter shafts 5a, 5a has a plurality of disc cutters 5
d is attached to the cutter shafts 5a, 5a, and the waste straws discharged from the waste straw conveying device 9 are inserted into the gaps between the disc cutters 5d, 5d which are arranged to face each other. It is configured to be introduced in a state in which the culm direction of the waste itself is set in parallel with. by this,
The waste straw is shredded into multiple pieces in the direction of the culm and released on the field.

With the above construction, the waste shredding device 5
A mode of switching between the work of (1) and the work of sending it to the dropper 6 while keeping it long will be described. As shown in FIG.
When performing work with the waste shredding device 5, the opening / closing cover 5c above the waste shredding device 5 is set to the open position, and the telescopic rail portion 14b is set to the shortened state. As a result, the waste discharged from the straw conveying device 9 is introduced into the shredding space through the opening 5b whose open / close cover 5c has been switched to the open state, and shredded. When performing the dropper work, by setting the open / close cover 5c in the closed state and setting the telescopic rail portion 14b in the long state, the waste straw conveyed by the straw discharge conveying device 9 passes above the open / close cover 5c. Then, it is discharged to the long straw discharge path 7.
As a result, the waste is discharged onto the receiving table 6A of the dropper 6. Reference numeral 30 in the drawing denotes a guide plate for guiding the shredded waste to the surface for discharging it.

Next, as a waste treatment device, a case where the waste shredding device 5 and the dropper 6 are provided, and a case where the dropper 6 is used.
Instead of this, switching of the telescopic rail portion 14b and switching of the open / close cover 5c will be described corresponding to the case where a binding device (not shown) is provided. (1) As shown in FIG. 4, when the operation lever 24 is set to the neutral position, the telescopic rail portion 14b is kept in the stored state, and the open / close cover 5c is maintained in the closed state. (2) As shown in FIG. 12, when the operation lever 24 is set to the shredding operation position c, the telescopic rail portion 14b is maintained in the stored state, and the open / close cover 5c is switched to the open state. (3) As shown in FIG. 13, when the operation lever 24 is set to the dropper operation position a, the telescopic rail portion 14b is projected to the first predetermined position, and the opening / closing cover 5c is
It has been switched to the closed state. (4) As shown in FIG. 14, when the operation lever 24 is set to the bundling operation position b, the telescopic rail portion 14b is further projected from the first predetermined position, and the opening / closing cover 5c is
It is kept closed.

[Other Embodiments] A. As the waste-removal processing device, the configuration including the waste-removal shredder 5 and the dropper 6 is shown, but a binding device or a three-dimensional discharging device may be provided. B. The auxiliary rail 20 may be configured to be extendable / contractible similarly to the sandwiching rail 14, and may be configured to extend / contract in conjunction with the extendable / contractible rail portion 14b.

[Brief description of drawings]

1] Overall side view of combine

FIG. 2 is a side view showing a structure for removing straws.

FIG. 3 is a plan view showing a straw processing structure.

FIG. 4 is a side view showing a sandwiching rail.

FIG. 5 is a vertical sectional side view of the operation lever.

FIG. 6 is a front view showing an operation lever.

FIG. 7 is a plan view showing an operation guide groove.

FIG. 8 is a front view showing a base end portion of an operation lever.

FIG. 9 is a perspective view showing an operation lever.

FIG. 10 is a front view showing a state in which an operation lever opening / closing operation device and a rail operation device are selected.

FIG. 11 is a cross-sectional plan view showing a state in which the plate-like portion exerts a regulating function when the operation lever performs yawing operation around the axis P.

FIG. 12 is a side view showing the operation lever, the rail operation device, and the opening / closing operation device when the operation lever is set to the shredding operation position.

FIG. 13 is a side view showing the operation lever, the rail operation device, and the opening / closing operation device when the operation lever is set to the dropper operation position.

FIG. 14 is a side view showing the operation lever, the rail operation device, and the opening / closing operation device when the operation lever is set to the discharging binding operation position.

FIG. 15 is a plan view showing the chain tight toner in the waste straw conveying device.

FIG. 16 is a front view showing the chain tight toner in the waste straw conveying device.

FIG. 17 is a plan view showing a mounting state of a second chain tightener.

[Explanation of symbols]

1 Threshing feed chain 5, 6 Processing unit (shredder, waste straw dropper) 5c Open / close cover 9 Straw transporter 13 pinching chain 14 pinching rail 14a Main body rail part 14b Telescopic rail section 20 Rail interlocking member 21 Open / close interlocking member 24 Control lever 24b Plate-shaped part (lifting and holding part) 27 coil spring 28 Operation guide groove 28a Engagement holder A rail operating device B Opening / closing device

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) B62D 49/00 B62D 49/00 F

Claims (6)

[Claims] 1. An operating lever for switching various devices to a driving state corresponding to a work mode is swingably provided on a support shaft, and an operating guide groove of the operating lever has a plurality of operating positions of the operating lever. Providing an engagement holding part to set,
A coil spring for urging the operation lever toward the direction of engaging with the engagement holding portion is externally fitted to a support shaft of the operation lever, and the coil spring is dropped on the operation lever in the radial direction. An operating structure for an agricultural work machine that forms a lifting and holding unit that regulates movement and maintains lifting. 2. A straw conveying device for receiving and treating the treated grain culms conveyed by a feed chain toward the straw treating device, and the straw treating device is composed of a plurality of types of treating parts. An operation structure of an agricultural work machine in which an operation lever for switching is swingably provided on a support shaft in order to change a discharge position of conveyance waste from the waste conveyance device for each of the individual processing units. Providing an engagement holding portion for setting the operation position of the operation lever in a plurality of steps in the operation guide groove of the operation lever, and urging the operation lever in a direction of engaging with the engagement holding portion An agricultural product in which a coil spring is externally fitted to a support shaft of the operation lever, and a lifting holding portion is formed on the operation lever for restricting the coil spring from falling in the radial direction and lifting and holding the coil spring. Operation structure of the machine. 3. A straw conveyer device for receiving and treating the treated and treated grain culm conveyed by a feed chain toward a straw treating device, and sandwiching the stock of the waste straw conveyed in the straw conveyer device. In order to do so, a sandwiching chain and a sandwiching rail facing the sandwiching chain are provided, and the waste processing device is composed of a plurality of types of processing parts, and the waste transfer device conveys waste discharged parts for each individual processing part. In order to change the gripping chain, the gripping rail is formed by a telescopic rail part that expands and contracts along the moving direction of the pinching chain, and a main body rail part that holds the telescopic rail part while allowing the telescopic movement of the telescopic rail part. In the operating structure of the agricultural working machine, a rail operating device for operating the telescopic rail portion is provided, and an operating lever for operating the rail operating device. Is provided on the support shaft so as to be swingable, and an engagement holding portion that sets the operation position of the operation lever in a plurality of steps is provided in the operation guide groove of the operation lever, and a direction in which the engagement holding portion is engaged. A coil spring for urging the operation lever toward the front is externally fitted to a support shaft of the operation lever, and the operation lever is provided with a coil spring for restricting the radial movement of the coil spring to hold and hold it. The operation structure of the agricultural work machine that forms the part. 4. A straw conveyer device for receiving and treating the treated grain culm conveyed by a feed chain and conveying it toward the straw treating device, and sandwiching the stock of the waste straw conveyed in the straw conveyer device. In order to do so, a sandwiching chain and a sandwiching rail facing the sandwiching chain are provided, and the waste processing device is composed of a plurality of types of processing parts, and the waste transfer device conveys waste discharged parts for each individual processing part. In order to change the gripping chain, the gripping rail is formed by a telescopic rail part that expands and contracts along the moving direction of the pinching chain, and a main body rail part that holds the telescopic rail part while allowing the telescopic movement of the telescopic rail part. As a processing section of the waste processing device, a shredding device for shredding and processing the waste is provided, and the waste introduction port of the shredding device is opened in a closed posture to allow the passage of the waste. An operating structure of an agricultural machine equipped with an opening / closing cover for introducing wastewater into a shredder, wherein a rail operating device for extending / contracting the telescopic rail portion and an opening / closing operating device for driving the opening / closing cover to open / close are provided. At the same time, an operating lever for operating the rail operating device and the opening / closing operating device is provided on the support shaft so as to be swingable, and the support shaft is interlocked with the rail interlocking member interlocking with the rail operating device and the opening / closing operation device. An opening / closing interlocking member is swingably supported while sandwiching the operation lever, and the operation lever is swung in a direction along an axis of the support shaft that is orthogonal to a swing direction around the support shaft. The operation lever is selectively engaged with the rail interlocking member and the opening / closing interlocking member, and the operation lever and one interlocking member selectively engaged are oscillated and driven around the support shaft, and Part Is configured to open / close the opening / closing cover, and an engagement holding portion for setting the operation position of the operation lever in a plurality of steps is provided in the operation guide groove of the operation lever, and is engaged with the engagement holding portion. A coil spring for urging the operation lever toward the mating direction is externally fitted to the support shaft, and the operation lever is provided with a coil spring for restricting the radial movement of the coil spring and lifting and holding the coil spring. The operation structure of the agricultural work machine that forms the part. 5. A lifting holding portion is formed by a plate-shaped portion that is formed by bending a base end portion of the operation lever that is externally fitted to a support shaft and that extends cantilever toward the rail interlocking member. The operation structure for an agricultural working machine according to claim 4, wherein a tip end portion of the plate-shaped portion is provided in the vicinity of the rail interlocking member. 6. The coil spring according to claim 1, wherein the coil spring is configured to swing about the support shaft in association with swinging operation of the operating lever about the support shaft. Operating structure of the agricultural machine.