JP2020168029A - combine - Google Patents

Abstract

To perform work favorably by operating a threshing device in a suitable operation state for manual threshing work in manual threshing work and improve durability.SOLUTION: A combine includes: a restriction member 26 capable of being switched between a restriction cancellation state enabling grain culms to be supplied manually and a restriction state restricting supply of grain culms; a detection sensor detecting whether the combine is in the restriction state or restriction cancellation state; and a threshing control unit controlling a drive speed of a threshing device 4 such that the combine is brought into an operation state for reaping work when the restriction state is detected by the detection sensor and an operation state for manual threshing work when the restriction cancellation state is detected by the detection sensor.SELECTED DRAWING: Figure 3

Description

The present invention relates to a combine including a threshing device for threshing while transporting a harvested culm by a threshing feed chain and a grain harvester for transporting a harvested culm cut at a cutting section toward a threshing feed chain.

In this type of combine, the pillow handling posture suitable for the pillow handling work in which the hand-cut grain is manually supplied to the threshing feed chain to thresh, and the pillow handling work is regulated in the cutting section. A regulation member that can be switched to the normal working posture for threshing the harvested grain is provided, and a detection switch that switches to the on state when this regulation member switches to the pillow handling posture and a detection switch that is on. When switched to, some were equipped with a control device that adjusted the driving speed of the threshing feed chain to the speed for pillow handling work. Each of the regulating member and the detection switch is provided in a state of being supported by the threshing device side (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2004-267209

In the above-mentioned conventional configuration, since the regulating member and the detection switch are provided in a state of being supported by the threshing device side, respectively, there are the following disadvantages.

That is, since the threshing device is provided with a handling cylinder having a large weight and rotating at high speed inside the threshing device, when the harvested culm is handled and processed by the handling cylinder, the threshing device is used for executing the work. Along with this, strong vibration will occur. Since the regulating member and the detection switch are supported on the threshing device side, there is a possibility that the regulating member and the detection switch may malfunction due to the strong vibration generated when the threshing operation is executed.

Therefore, it has been desired to improve the durability of the pillow handling work while making the work good by operating the threshing device in an operating state suitable for the pillow handling work.

The characteristic configuration of the combine according to the present invention is
A threshing device that threshs while transporting the harvested culm by a threshing feed chain,
A grain culm transport device that transports the harvested culm cut by the reaping section toward the threshing feed chain, and
A pillow handling grain culm supply unit for the operator to manually supply the grain culm to the threshing device during the pillow handling work,
A regulatory member provided in the pillow-handling culm supply unit that can be switched between a deregulation state that enables manual supply of culms and a regulation state that regulates manual culm supply.
A detection sensor that detects whether the regulation member is in the regulation state or the regulation release state,
The driving speed of the threshing device is controlled so that when the detection sensor detects the regulation state, the operation state is for cutting work, and when the detection sensor detects the regulation release state, the operation state is for pillow handling. Is equipped with a threshing control unit
A support member that supports the detection sensor is connected and fixed to the frame body that supports the grain culm transport device.
The restricting member is swayably supported by the support member around the lateral axis, and is configured to switch between the restricted state and the deregulated state by swinging around the axis. At the point.

According to the present invention, when the regulating member is manually switched to the deregulated state and the detection sensor detects this, the threshing control unit controls the driving speed of the threshing device so as to be in the operating state for pillow handling. To do. That is, when the operator performs the pillow handling work, the threshing feed chain is driven in an operating state suitable for pillow handling, for example, the threshing feed chain is driven at a speed lower than the driving speed in the operating state for cutting work.

If the regulating member is in the regulated state, the grain culm cannot be manually supplied to the pillow handling grain culm supply unit, so that the operator must always switch the regulating member to the deregulated state during the pillow handling work. As a result, during the pillow handling work, the threshing device is driven in the operating state for pillow handling, so that the work can be performed satisfactorily.

The detection sensor is supported by a support member connected and fixed to a frame body that supports the grain culm transport device, and the regulation member is swingably supported by the support member around the lateral axis. Since the detection sensor and the regulating member are supported on the grain culm transport device side in this way, strong vibration does not act as compared with the case where the threshing device side is provided, so that there is less risk of causing a malfunction, and the durability is improved. It can be improved.

Moreover, the detection sensor and the regulating member are not directly supported by the frame body, but are supported by the support members connected and fixed to the frame body. By adding a support member in this way to support the detection sensor and the regulation member, the grain does not need to be specially processed in the frame body, which is a large member to support the grain culm transport device. The regulating member can be provided at a position suitable for regulating the supply of the culm, and the detection sensor can be provided at a position suitable for detecting the state of the regulating member.

Therefore, in the pillow handling work, it is possible to improve the durability while the work can be performed satisfactorily by operating the threshing device in an operating state suitable for the pillow handling work. Moreover, it can be dealt with by a simple structural improvement due to the rational support structure.

In the present invention, it is preferable that the regulating member is provided with an urging means for swinging and urging the regulating member toward the regulated state.

According to this configuration, the regulating member is oscillated toward the regulated state by the urging means. Therefore, when the pillow cutting work is not performed, the regulating member is accurately regulated by the urging force of the urging means. Can be maintained at.

In the present invention, the urging means is in a state of swinging and urging the regulating member toward the deregulation state when the regulation member swings to the deregulation state side beyond a predetermined swing position. It is preferable that it is provided.

According to this configuration, when the regulating member swings from the regulated state to the regulated release state side and exceeds a predetermined swing position, the regulating member is rocked and biased toward the regulated release state by the urging means. That is, one urging means can hold the position of the regulating member in each of the regulated state and the deregulated state.

In the present invention, the receiving stand for receiving and guiding the grain culm manually supplied by the operator during the pillow handling operation and the harvested culm transported from the culm transport device are upwardly provided to the pillow culm supply unit. It is equipped with a guide culm that guides you from
It is preferable that each of the receiving base and the guide rod is supported by the support member so as to swing around the lateral axis on the front side of the machine body.

According to this configuration, during the pillow handling operation, the grain culms to be manually supplied can be received and guided by the receiving table and supplied to the threshing device in a stable posture. At the time of cutting work by the cutting unit, the harvested grain culm transported from the grain culm transporting device can be satisfactorily delivered and transported to the threshing device while being pressed and guided from above by a guide rod.

Further, since the receiving base and the guide rod are supported by the support members so as to swing around the lateral axis on the front side of the machine body, for example, during maintenance work, the receiving base and the guide rod are supported by the support member, respectively. Can be swung upward around the lateral axis on the front side of the machine body, and the cradle and guide rod do not interfere with the work, making the work easier.

In the present invention, it is preferable that the regulating member is swingably supported around the same shaft core as the swing shaft core of the receiving base.

According to this configuration, the regulating member and the receiving base are swingably supported around the same axis. Therefore, by sharing the swing shaft core, the support structure can be simplified.

In the present invention, it is preferable that the regulating member is received and supported by the receiving stand in the regulated state to define the lower limit position.

According to this configuration, when the regulating member is switched to the regulated state, it is received and supported by the receiving stand to prevent further downward swing, and the lower limit position is defined.

Therefore, when the pillow handling work is not performed, when the regulating member is in the regulated state, it can also be used as a holding member that contacts the receiving table from above and holds the receiving table in position. it can.

In the present invention, it is preferable that the regulating member is provided on the lateral side of the machine body with respect to the receiving stand.

According to this configuration, the regulating member is located on the lateral side of the machine body with respect to the receiving stand. Therefore, when the posture is manually switched during pillow handling work, the position is close to the worker on the lateral outer side of the machine body. The regulation member will be located in, which makes the work easier.

In the present invention, it is preferable that the support member is located near the upper part of the transport path of the cut grain culm that is cut by the cutting portion and transported to the rear, and is provided in a form along the grain feeding direction. Is.

According to this configuration, the support member is located near the upper part of the transport path of the cut grain culm and is provided in a form along the grain feed direction, so that the support member is provided in a long shape along the grain feed direction. It is possible to provide the regulating member at a position suitable for the regulating action of regulating the supply of the culm without hindering the transportation of the harvested culm.

In the present invention, it is preferable that a manual operation unit for switching and operating the regulation member is provided in a state of being integrally connected to the regulation member.

According to this configuration, since the regulation member is integrally provided with the manual operation unit, the operator can hold the manual operation unit by hand and perform the posture switching operation of the regulation member. The regulating member is provided at a position suitable for regulating the supply of grain culms, but the manual operation unit can be provided at a position different from the regulating member for easy operation, and the regulating member can be operated by holding it by hand. It is possible to improve the operability as compared with the above.

It is an overall side view of a combine. It is a side view of the front part of a combine. It is a top view which shows the structure for transporting a grain culm. It is a control block including a schematic transmission structure. It is an exploded perspective view which shows the support structure of each part in a pillow handling grain culm supply part. It is an exploded perspective view which shows the support structure of each part in a pillow handling grain culm supply part. It is a top view which shows the support structure of each part in a pillow handling grain culm supply part. It is a side view which shows the support structure of each part in a pillow handling grain culm supply part. It is a side view which shows the posture change state of a regulation member.

Hereinafter, embodiments of the combine according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, in the combine, the cutting and transporting unit 3 is connected to the front portion of the traveling machine body 2 provided with the pair of left and right crawler traveling devices 1 so as to be freely raised and lowered around the horizontal axis P1, and the rear part of the traveling machine body 2. A threshing device 4 and a grain tank 5 for storing grains are provided in a state of being lined up in the width direction of the machine body. Further, a boarding operation unit 6 covered with a cabin is provided on the right side of the front portion of the traveling machine body 2, and a driving engine 7 is provided on the lower side of the boarding operation unit 6.

As shown in FIG. 2, the cutting and transporting unit 3 includes five raising devices 8 that cause a fallen planted culm, and a varican-type cutting blade as a cutting unit that cuts the root of the raised planted culm. 9. The culm that is transported toward the starting end of the threshing feed chain 10 of the threshing device 4 located on the rear side of the machine while gradually changing the posture of the cut culm in the vertical position in which the stock is cut to the sideways posture. It is configured to include a vertical transfer device 11 and the like as a transfer device.

As shown in FIG. 3, the vertical transport device 11 sandwiches the gathering unit 12 that gathers the cut grain culms cut by the cutting blade 9 in the center in the cutting width direction, and the stock roots of the gathered cut culms rearward. From the end of the stock holding and transporting device 13, the tip locking transporting device 14 that locks and transports the tip side of the harvested culm, and the stock root holding and transporting device 13, the stock of the harvested culm is transferred to the grain removal feed chain 10. It is provided with a supply / transport device 15 that guides the culm.

As shown in FIG. 2, the entire cutting and transporting unit 3 is supported by a front-rear direction tubular frame 16 extending in the front-rear direction, and is laterally supported by the front-rear direction tubular frame 16. It is supported by the traveling machine body 2 so as to be freely raised and lowered around the axis X.

As shown in FIG. 1, the threshing device 4 receives the harvested culm cut by the cutting blade 9 and transported to the rear inside, and uses the threshing feed chain 10 and the holding rail 17 to transfer the stock of the culm. While sandwiching and transporting, the tip side is threshed by the handling cylinder 18. Then, a sorting unit 19 provided below the handling cylinder 18 executes a grain sorting process on the threshed product, and the obtained grains are stored in the grain tank 5. Further, although not described in detail, a grain discharge device 20 for discharging grains stored in the grain tank 5 to the outside is provided.

As shown in FIG. 4, the power of the engine 7 is transmitted to the left and right crawler traveling devices 1 via a transmission mechanism (not shown) in the hydrostatic continuously variable transmission 21 and the transmission case 22, and the power after shifting is cut. It is transmitted to the cutting transport unit 3 via the clutch 23. Further, the power of the engine 7 is transmitted to the threshing device 4 via the threshing clutch 24, and each part of the threshing device 4, that is, the threshing feed chain 10, the handling cylinder 18, the sorting unit 19, the grain discharging device 20, and the like is the engine 7. It is driven by the power of.

In the normal cutting work of cutting the grain culm while traveling, the root of the planted grain culm is cut and cut by the cutting blade 9 while the traveling machine 2 is running, and the cut grain culm is cut by the vertical transport device 11. It is transported toward the threshing device 4, and the threshing device 4 performs the threshing process while sandwiching and transporting the threshing feed chain 10.

At the time of pillow handling work for threshing the hand-cut grain culms, the operator can manually supply the grain culms to the threshing device 4.
That is, as shown in FIGS. It is formed in the area between and. As shown in FIGS. 3, 6, 7 and 8, the pillow handling grain culm supply unit 100 is provided with a wide mounting surface 25A for receiving and guiding the grain culm manually supplied by the operator during the pillow handling operation. A stop 25 is provided to facilitate manual supply of culms.

As shown in FIG. 4, the pillow handling grain culm supply unit 100 is regulated so as to be switchable between a deregulation state that enables manual grain culm supply and a regulation state that regulates manual grain culm supply. A member 26 and a regulation state detection sensor 27 as a detection sensor for detecting whether the regulation member 26 is in the regulation state or the regulation release state are provided.

Further, the pillow handling grain culm supply unit 100 is provided with a first presser member 28 that is delivered from the vertical transfer device 11 and is conveyed by the supply and transfer device 15 to guide the cut grain culm from above, and from the vertical transfer device 11. A second pressing member 29 that presses and guides the harvested grain culm that is delivered and conveyed by the transfer starting end of the threshing feed chain 10 from above is provided.

Next, a specific support structure of each member of the pillow handling grain culm supply unit 100 will be described.

As shown in FIG. 3, a round pipe-shaped frame body 30 is fixedly extended rearward and upward from a cutting portion frame (not shown) connected to the front end portion of the front-rear tubular frame 16. A holding frame 31 for holding the holding guide rod 15b facing the transporting endless rotating chain 15a of the supply transporting device 15 is connected and fixed to the rear end portion of the 30. That is, as shown in FIG. 5, the mounting plate 32 in the inclined posture is integrally connected and fixed to the upper portion of the rear end portion of the frame 30, and the holding frame 31 is bolted to the mounting plate 32. It is connected by fastening.

As shown in FIG. 5, the holding frame body 31 is formed into an upper frame portion 31A formed into a channel shape in which the plate material is opened downward and a channel shape in which a plate material narrower than the upper frame portion 31A is opened upward. A pair of front and rear support rods 33 that support the holding guide rod 15b in a state of being formed in a substantially box shape by connecting the lower frame portion 31B and penetrating the vertical surface portions 31A1 on both the left and right sides of the upper frame portion 31A. It is equipped. Inside the holding frame body 31, a spring 15c for moving and urging each support rod 33 toward the transporting endless rotating chain 15a is provided.

The front end of the first pressing member 28 and the second pressing member 29 is rotatably supported by the rear end of the frame body 30 around the horizontal axis.

That is, as shown in FIGS. 5, 7 and 8, the support plate 35 is connected and fixed to the horizontal mounting plate 34 which is integrally connected and fixed to the lower end of the rear end of the frame body 30 by bolting. ing. Two cylindrical rotating boss portions 36, 37 are integrally connected and fixed to the support plate 35 by shifting their positions.

The first pressing member 28 and the second pressing member 29 each have a round bar member bent into a substantially L shape, and lateral shaft portions 28a and 29a extending in the lateral direction and front-rear shaft portions 28b and 29b extending in the front-rear direction of the machine body. It has. The lateral shaft portions 28a and 29a of the two pressing members 28 and 29 are rotatably fitted into the rotating boss portions 36 and 37 to prevent them from coming off, and the front and rear shaft portions 28b and 29b are in front of the machine body. It is extended to the cantilever state toward.

As shown in FIGS. 5 and 8, a swing arm 38 is integrally connected to the shaft end portion of the lateral shaft portion 28a of the first pressing member 28, and is supported by the swing side end portion of the swing arm 38. A coil spring 40 that acts as a pull is stretched over the spring receiver 39 provided on the plate 35. The first pressing member 28 is configured to be moved and urged downward by the urging force of the coil spring 40.
The second pressing member 29 is moved and urged downward by the regulating member 26 which is urged downward from the upper side via the receiving base 25 as described later.

As shown in FIG. 5, a sensor receiving portion 41 is provided in a state of being integrally connected to the front side of the rotating boss portion 37 with respect to the second pressing member 29, and the sensor receiving portion 41 is to be cut. A clogging detection sensor 42 for detecting that the culm has clogged is mounted.

As shown in FIGS. 5, 8 and 9, the clogging detection sensor 42 is supported by the sensor receiving unit 41 with the detection unit 42A protruding downward. On the lower side of the clogging detection sensor 42, a detection plate 43 made of a leaf spring whose front side portion is connected to the mounting plate body 34 is provided, and when the detection plate 43 is pushed by a clogging culm, clogging is performed. The detection sensor 42 is configured to detect and operate. When the clogging detection sensor 42 detects and operates, the control device H makes an emergency stop of the engine 7.

As shown in FIG. 5, an extension support portion 44 is formed in the sensor receiving portion 41 toward the left lateral side, and two bolts 45 are integrally connected to the extension support portion 44 in a state of protruding downward. ing. A rear portion of the support bracket 46, which will be described later, is connected to the extension support portion 44 by bolting.

The regulating member 26 and the regulated state detection sensor 27 are supported by a frame body 30 that supports the supply transport device 15 in the vertical transport device 11. Specifically, the regulation member 26 and the regulation state detection sensor 27 are supported by a support bracket 46 as a support member connected and fixed to the frame body 30.

As shown in FIG. 6, the support bracket 46 includes a base portion 46A in which a plate material is bent into a substantially L shape in a plan view, a support shaft portion 46B fixed and extended laterally from the rear end portion of the base portion 46A, and a support shaft portion 46B. It is provided with a sensor support portion 46C formed by bending a plate material into a substantially L shape in a side view and integrally connected to a lateral side surface of a front and rear intermediate portion of the base portion 46A. Further, a reinforcing rib 46D and a spring receiving portion 46E to which a coil spring 47 described later is locked are also provided.

The support bracket 46 is supported by being connected by bolting to a mounting plate 49 in a vertical posture in which the front end portion of the base portion 46A is integrally connected and fixed to the frame body 30. Then, as shown in FIG. 2, the support bracket 46 is provided in a state of being located near the upper side of the transport path of the cut grain culm that is cut by the cutting blade 9 and transported by the vertical transport device 11. Further, the support bracket 46 is provided narrow in the vertical direction and long in the front-rear direction of the machine body, is located near the upper part of the transport path, and is provided in a form along the grain feeding direction.

As shown in FIG. 9, an opening 48 for passing the rotation shaft 27A of the regulation state detection sensor 27 is formed at a portion of the base portion 46A corresponding to the sensor support portion 46C. Further, the lower side surface of the sensor support portion 46C is connected to the extension support portion 44 formed in the sensor receiving portion 41 by bolting.

As shown in FIG. 6, the regulating member 26 is formed by bending a rod member into a substantially L shape, and is provided in a state of extending along the front-rear direction of the machine body. On the base end side located on the front side of the machine body, a base end side support portion 26a formed by bending and forming a plate material in a channel shape is integrally connected and fixed, and this base end side support portion 26a is a support shaft portion of the support bracket 46. It is rotatably supported by the outer fitting of 46B. Therefore, the regulating member 26 is rotatably supported by the support bracket 46 around the shaft core P2 of the support shaft portion 46B.

As shown in FIGS. 3 and 7, the regulating member 26 is provided on the left side of the receiving base 25, that is, on the lateral side of the machine body. A grip operation unit 51 as a manual operation unit for switching and operating the regulation member 26 is provided by forming a rod material that is separate from the regulation member 26. The grip operation portion 51 has a proximal end side portion integrally connected and fixed to the proximal end side support portion 26a, and extends in a cantilever shape toward the rear oblique direction on the lateral outer side of the machine body. On the other hand, the regulating member 26 extends upward from the receiving base 25 and is cantilevered in a rearward oblique direction so as to interfere with the pillow handling work.

Therefore, although it is possible to manually regulate the supply of the grain culm by the regulating member 26, the operator can easily operate the grip operation unit 51 from the lateral side and the outer side of the machine body, and the operability is good. It becomes a thing.

As shown in FIG. 6, a rod-shaped spring receiving portion 52 is integrally formed in a state of protruding from the base end side supporting portion 26a to the left outer side, and further, from the middle portion of the spring receiving portion 52 to the front side of the machine body. A rod-shaped switching action portion 53 projecting toward the surface is integrally formed.

A coil spring 54 that pulls the spring receiving portion 52 integrally formed on the base end side support portion 26a and the spring receiving portion 46E of the support bracket 46 is stretched, and the regulating member 26 is attached to the coil spring 54. It is rotationally urged toward the lower front side by the force. Further, the base end side support portion 26a of the regulation member 26 is formed with a locking portion 55 projecting toward the receiving base 25 side. Then, the restricting member 26 is urged to rotate forward and downward, and the locking portion 55 abuts on the upper surface of the receiving base 25, so that the restricting member 26 rotates further downward. It is a regulated structure. In this way, the state in which the locking portion 55 is in contact with the upper surface of the receiving base 25 and the rotation is restricted corresponds to the regulated state.

When the gripping operation unit 51 is gripped and the regulating member 26 in the regulated state is manually swung toward the front side of the machine body against the urging force of the coil spring 54 to exceed the predetermined swinging position, that is, the regulating member When the spring receiving portion 52 on the 26 side exceeds the dead point, the coil spring 54 switches from a state in which the regulating member 26 is oscillated downward to the rear to a state in which the regulating member 26 is oscillated downward in the front. The restricting member 26 that is oscillated downward in the front abuts on the outwardly projecting portion of the support rod 33 on the rear side of the pair of support rods 33 that support the holding guide rod 15b. Rotation to the front and lower side is restricted. In this way, the state in which the rotation of the regulating member 26 is restricted corresponds to the deregulated state.

As shown in FIGS. 7, 8 and 9, a detection arm 27B fixed to the rotation shaft 27A of the regulation state detection sensor 27 is provided at a position corresponding to the switching action unit 53 of the regulation member 26. The regulation state detection sensor 27 is, for example, a switch type sensor that is turned on when detecting that the regulation member 26 is in the regulation state and is turned off when detecting that the regulation member 26 is in the regulation release state. It is composed of. It should be noted that the contents of the on state and the off state corresponding to the detection state may be set to be opposite to each other.

Then, as the regulation member 26 is switched from the regulation state to the regulation release state, the switching action unit 53 contacts the detection arm 27B and the rotation shaft 27A of the regulation state detection sensor 27 rotates to turn off from the on state. Switch to the state. The rotation shaft 27A and the detection arm 27B of the regulation state detection sensor 27 are rotationally urged to an off state by an urging mechanism (not shown) inside the sensor.

The rear end of the receiving base 25 is rotatably supported by the support shaft portion 46B of the support bracket 46. That is, the receiving base 25 is swingably supported by the support bracket 46 around the lateral shaft core on the front side of the machine body, which is the same as the swing shaft core of the regulating member 26. As described above, when in the regulated state, as shown in FIGS. 7 and 8, the locking portion 55 formed on the base end side support portion 26a of the regulating member 26 comes into contact with the upper surface of the receiving base 25. Since the regulating member 26 is rotationally urged downward by the urging force of the coil spring 54, the receiving base 25 is also rotationally urged downward. Further, the receiving base 25 abuts on the second pressing member 29 whose contact portion 56 provided on the inner surface side acts on the transport starting end portion of the threshing feed chain 10 located on the lower side, and further downward rotation. Is regulated.

As described above, since the extension support portion 44 extends from the sensor receiving portion 41 and the support bracket 46 is connected to the extension support portion 44, the first pressing member 28 and the second pressing member 29 have a lateral axis. It is configured to be swingably supported by the support bracket 46 around the core.

As shown in FIG. 4, a control device H as a threshing control unit that controls the driving speed of the threshing device 4 is provided based on the detection information of the regulated state detection sensor 27. When the regulation state detection sensor 27 detects that the regulation member 26 is in the regulation state, the control device H is in the operating state for cutting work, and the regulation state detection sensor 27 is in the regulation release state. When this is detected, the driving speed of the threshing device 4 is controlled so as to be in an operating state for handling pillows.

Specifically, the detection information of the regulation state detection sensor 27 is input to the control device H, and the control device H is configured to be able to control the operation of a fuel control mechanism (not shown). .. Then, based on the detection information of the regulation state detection sensor 27, the fuel supply amount supplied to the engine 7 is changed to change and adjust the output rotation speed of the engine 7, so that the operating state for cutting work and pillow handling are performed. It is configured to switch to the operating state for.

In the operating state for cutting work, the output rotation speed of the engine 7 is rotationally driven at a high speed equal to or close to the rated rotation speed. Then, in the operating state for pillow handling, the output rotation speed of the engine 7 is lower than the rated rotation speed so that the driving speed of the threshing device 4 is lower than in the operating state for cutting work. Is adjusted to. In this way, when the pillow handling work is performed, the threshing feed chain 10 is driven at a low speed so that the manual culm supply can be easily performed.

[Another Embodiment]
(1) In the above embodiment, the regulating member 26 is configured to be received and supported by the receiving base 25 in the regulated state to define the lower limit position. However, instead of such a configuration, the regulating member 26 is used. The lower limit position may be defined by abutting on the support bracket 46 or another member.

(2) In the above embodiment, the grip operation unit 51 for switching and operating the regulation member 26 is provided separately from the regulation member 26, but the regulation is performed without providing such a grip operation unit 51. The member 26 may be held as it is by hand to switch the posture.

(3) In the above embodiment, the regulating member 26 is swingably supported around the same shaft core as the swinging shaft core of the receiving base 25, and is provided on the lateral outer side of the receiving base 25. However, instead of such a configuration, the regulating member 26 is supported so as to be swingably around a shaft core different from the swinging shaft core of the receiving base 25, and the regulating member 26 is received in a plan view. It can be implemented in various forms such as a configuration provided at a position overlapping the base 25 and a configuration in which the regulating member 26 is provided on the side of the machine body with respect to the receiving base 25.

(4) In the above embodiment, the regulating member 26 is provided with a coil spring 54 capable of swinging and urging toward the regulated state and the regulated state, respectively. However, instead of such a configuration, the regulating member 26 is provided. In each of the regulated state and the deregulated state, a position holding mechanism that can hold and release the position may be provided.

(5) In the above embodiment, the support bracket 46 is located in the upper vicinity of the grain culm transport path and is provided along the grain feed direction. However, instead of such a configuration, the support bracket 46 is provided. May be provided in a state where the culm is located below the culm transport path.

(6) In the above embodiment, the control device H as the threshing control unit is configured to switch between the operating state for cutting work and the operating state for pillow handling by changing and adjusting the output rotation speed of the engine 7. However, instead of such a configuration, the power transmission system for the threshing feed chain 10 is provided with a transmission that can change the drive speed of the threshing feed chain 10, and threshing is performed based on the detection information of the regulation state detection sensor 27. It may be configured to control the operation of the transmission so as to change the drive speed of the feed chain 10, and in short, it may be a configuration that reveals a working state suitable for pillow handling work, and is limited to the control of the engine 7. It is not something that is done.

(7) In the above embodiment, the regulation state detection sensor 27 shows a switch type detection sensor in which the switch is turned on and off based on the position displacement of the rotary detection arm. However, instead of such a configuration, the potentiometer Various configurations can be used, such as a configuration for detecting whether the regulation state or the regulation release state is obtained by determining the level of the detected value.

The present invention can be applied to a head-feeding combine equipped with a threshing device for threshing while transporting a harvested culm by a threshing feed chain.

4 Threshing device 9 Cutting part 10 Threshing feed chain 11 Grain culm transport device 25 Receiving stand 26 Regulatory member 27 Detection sensor 28, 29 Guide rod 30 Frame body 46 Support member 51 Manual operation part 54 Biasing means 100 Pillow culm supply Department H Threshing control unit

Claims (1)

A threshing device that threshs while transporting the harvested culm by a threshing feed chain,
A grain culm transport device that transports the harvested culm cut by the reaping section toward the threshing feed chain, and
A pillow handling grain culm supply unit for the operator to manually supply the grain culm to the threshing device during the pillow handling work,
A regulatory member provided in the pillow-handling culm supply unit that can be switched between a deregulation state that enables manual supply of culms and a regulation state that regulates manual culm supply.
A detection sensor that detects whether the regulation member is in the regulation state or the regulation release state,
The driving speed of the threshing device is controlled so that when the detection sensor detects the regulation state, the operation state is for cutting work, and when the detection sensor detects the regulation release state, the operation state is for pillow handling. A combine that is equipped with a threshing control unit.

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