WO2016035544A1

WO2016035544A1 - Threshing device for whole culm charging-type combine harvester and combine harvester

Info

Publication number: WO2016035544A1
Application number: PCT/JP2015/073126
Authority: WO
Inventors: 小宮良介
Original assignee: 株式会社クボタ
Priority date: 2014-09-02
Filing date: 2015-08-18
Publication date: 2016-03-10
Also published as: CN106793756A; CN110393079A; CN110393078A; CN112602449A; CN106793756B; CN110393078B; KR20170053651A; PH12017500363A1; KR102545558B1

Abstract

A threshing device for a whole culm-charging-type combine harvester is provided with a threshing frame (14) for supporting a threshing cylinder and a receiving net (18) and an openable side wall (16) capable of opening and closing an opening (24) through which the threshing cylinder (17) and the receiving net (18) can be made to face out to the side of the combine body. The threshing frame (14) is provided with a frame section (14A) for forming the opening (24). The side wall (16) is provided with a holding mechanism (B), which swings vertically between a lower closed position that closes the opening (24) and an upper open position that opens the opening (24) with a front-to-back spindle (26) as a fulcrum and which makes it possible to hold the side wall (16) in the open position. The holding mechanism (B) is disposed on the back rim portion (14Aa) of the frame section (14A).

Description

Whole throwing type combine threshing device and combine

The present invention relates to a threshing apparatus for whole throw-in combine and a combine. The latter combine includes not only the former all-throw type combine (hereinafter also referred to as a normal combine) but also a self-removing combine.

[1] A threshing frame that supports the handling cylinder and the receiving net, and an openable / closable side wall that closes an opening that allows the handling cylinder and the receiving net to face laterally outward of the machine body. The threshing device of the full throwing type combine harvester configured to be swingable up and down over the lower closed position that closes the opening and the upper open position that opens the opening, with a longitudinally supporting shaft as a fulcrum. There is one in which a holding mechanism (gas spring) that enables the body (cover) to be held at the open position is arranged at the front end portion of the lateral side portion (left side portion) on the lateral outer end side of the machine body in the threshing frame (for example, patent) Reference 1).

[2] In a combine configured to transmit engine power to a cutting part via a relay transmission shaft, conventionally, an input belt transmission as an endless rotating body for input from the Karatsu shaft. Is transmitted to the handling cylinder input shaft as a relay transmission shaft through the mechanism, and power is further transmitted from the handling cylinder input shaft to the input shaft of the cutting unit through the output belt transmission mechanism as an endless rotating body for output. The input rotator in the input belt transmission mechanism configured to be transmitted and provided in the handle input shaft is provided in a state of being positioned closer to the shaft end side than the output rotator in the output belt transmission mechanism. (For example, see Patent Document 2).

Japanese Patent No. 4594793 (see JP 4594793 B2 or corresponding publication JP 2006-311820 A) Japanese Unexamined Patent Application Publication No. 2013-153684 (JP 2013-153684 A)

[1] Issues corresponding to the background art [1] are as follows.
The threshing device for the all-throw-in type combine harvester is equipped with a transmission system that distributes power from the engine to various drive devices such as a handling cylinder and a swing sorting mechanism provided in the inside of the threshing frame. The side part (left side part) is arranged so as to bypass the opening described above over the front end part and the lower half part of the lateral side part (left side part). As a result, the assembly and maintenance of the transmission system as well as maintenance of the handling cylinder and the receiving net using the opening can be easily performed from the lateral side of the machine body.

In the threshing apparatus having such a configuration, when the holding mechanism (gas spring) is arranged at the front end portion of the lateral side portion (left side portion) of the threshing frame on the lateral outer end side of the machine body, the front end portion becomes intricate. This makes it difficult to assemble and maintain the holding mechanism and the transmission system.

Therefore, there has been a demand for an all-throw-in type combine threshing device that can easily assemble and maintain the holding mechanism and the transmission system.

[2] Issues corresponding to the background art [2] are as follows.
In the above conventional configuration, the input belt transmission mechanism is located closer to the shaft end than the output belt transmission mechanism. The input belt transmission mechanism is configured to include a plurality of large transmission belts in parallel because a large driving load is applied to transmit engine power to each of the handling cylinder and the cutting unit. On the other hand, the output belt transmission mechanism transmits power only to the cutting unit, and the driving load is smaller than that of the input belt transmission mechanism. And since it is necessary to arrange | position those power transmission mechanisms in the narrow area | region of the front part of an airframe, it has the structure which transmits motive power with one small power transmission belt.

The mowing unit has a small driving load while a good mowing operation is performed, but the driving load may temporarily become excessive due to the clogging of crops and the like along with the mowing operation. As a result, depending on the work situation, such a large driving load may be applied to the output belt transmission mechanism, and the frequency of maintenance work such as repair and replacement may increase in the output belt transmission mechanism.

However, in the conventional configuration, the output belt transmission mechanism is located on the inner side in the axial direction than the input belt transmission mechanism. Therefore, when performing maintenance work as described above, a large input is required each time. The belt transmission mechanism must be removed at the same time.

Therefore, it has been desired to make it easy to perform maintenance work in a transmission mechanism in which power is transmitted to the cutting part via an endless rotating body for output.

[1] The problem solving means corresponding to the problem [1] is as follows.
In the threshing device of the whole bowl input combine according to the present invention,
A threshing frame that supports the handling cylinder and the receiving net, and an openable / closable side wall that closes an opening that allows the handling cylinder and the receiving net to face laterally outward of the machine body,
The threshing frame includes a frame portion that forms the opening,
The side wall body swings up and down over a lower closed position for closing the opening and an upper opening position for opening the opening, with a support shaft facing in the front-rear direction as a fulcrum,
A holding mechanism that enables the side wall body to be held at the open position;
The holding mechanism is disposed at a rear edge portion of the frame portion.

According to this means, the holding mechanism is not provided with a transmission system, not a front edge portion of a frame portion provided with a transmission system that is transmitted to a handling cylinder or a swing sorting mechanism provided in the threshing device. It will be located at the rear edge of the frame.

That is, it is possible to obtain a state in which the transmission system and the holding mechanism are appropriately distributed around the opening in the threshing frame. Accordingly, it is possible to avoid the occurrence of a problem that the transmission system or the holding mechanism becomes an obstacle when maintenance of the handling cylinder and the receiving net using the opening is performed. In addition, it is possible to avoid the occurrence of problems such that the holding mechanism becomes an obstacle when the transmission system is assembled or maintained, or the transmission system becomes an obstacle when the holding mechanism is assembled or maintained.

Therefore, it is possible to easily perform assembly and maintenance of the transmission system and the holding mechanism from the lateral side of the machine body as well as maintenance of the handling cylinder and the receiving net using the opening.

As one of the means for making the present invention more suitable,
The side wall body includes an inner wall plate adjacent to the receiving net at the closed position, an outer wall plate positioned at a lateral lateral outer side of the inner wall plate, a front end portion of the inner wall plate, and a front end of the outer wall plate. A front wall plate extending over a portion, a rear wall plate extending over a rear end portion of the inner wall plate and a rear end portion of the outer wall plate, and forming a rectangular cross section at the closed position,
The said side wall body equips the said rear wall board with the attaching part for holding mechanisms.

According to this means, the side wall body has a rectangular longitudinal cross section when viewed from the left-right direction of the machine body at the opened position. Thereby, even if the action position of the holding mechanism with respect to the side wall body is shifted to the rear end portion of the side wall body, the posture of the side wall body at the open position can be maintained in a good posture with little distortion.

In addition, the rear wall plate provided with the holding portion for the holding mechanism extends between the inner wall plate and the outer wall plate along the opening / closing direction of the side wall body, and thus has a strong resistance against the load in the opening / closing direction of the side wall body. is doing. Therefore, by holding the side wall body in the open position by the holding mechanism, even if the weight of the side wall body acts on the rear wall plate, deformation of the rear wall plate due to the weight can be avoided.

Therefore, in order to facilitate the assembly and maintenance of the transmission system and the holding mechanism, the holding mechanism can be favorably held at the opening position of the side wall body while being provided at the rear edge portion of the frame portion. it can.

As one of the means for making the present invention more suitable,
The side wall body includes an upper connecting member that connects the front wall plate and the rear wall plate across the front wall plate and the rear wall plate at the upper end portion of the side wall body, and the front end portion at the lower end portion of the side wall body. A lower connecting member for connecting the front wall plate and the rear wall plate over the wall plate and the rear wall plate;

According to this means, the shape retaining property of the side wall body can be enhanced by the upper connecting member and the lower connecting member. Thereby, the attitude | position of the side wall body in an open position can be maintained in the favorable attitude | position with less distortion.

Therefore, the holding mechanism can be more favorably held at the opening position of the side wall body while being arranged at the rear edge portion of the frame portion.

As one of the means for making the present invention more suitable,
The upper connecting member is connected to the upper end of the threshing frame via the support shaft.

According to this means, the upper connecting member that enhances the shape retention of the side wall body can be used as a member that connects to the upper end of the threshing frame.

Therefore, the structure can be simplified and the cost can be reduced by sharing the members while allowing the holding mechanism to satisfactorily hold the side wall body at the open position.

As one of the means for making the present invention more suitable,
The side wall body includes a top plate that spans the front wall plate and the rear wall plate, and spans the outer wall plate and the upper connecting member,
The top plate is connected to the front wall plate, the rear wall plate, the outer wall plate, and the upper connection member.

This means that the shape retention of the side wall can be further enhanced by the top plate. Thereby, the attitude | position of the side wall body in an open position can be maintained in the favorable attitude | position with less distortion.

As one of the means for making the present invention more suitable,
The lower connecting member includes an outer surface facing the lower end of the outer wall plate,
The lower connecting member is disposed at an end portion on the outer wall plate side of the front wall plate and the rear wall plate, and the outer surface is brought into surface contact with a lower end portion of the outer wall plate.

According to this means, at the open position of the side wall body, the lower connecting member receives the lower end portion (free end portion) of the outer wall plate, which is likely to be distorted by being away from the swing fulcrum of the side wall body, from below. Come to support. Thereby, the attitude | position of the side wall body in an open position can be maintained in the favorable attitude | position with less distortion.

As one of the means for making the present invention more suitable,
A seal member is provided that closely contacts the side surface of the frame portion on the side wall body side and the frame-like surface portion of the inner wall plate corresponding to the side surface at the closed position of the side wall body.

According to this means, it is possible to prevent the occurrence of a problem that the grain obtained by the handling process by the threshing device leaks from the gap between the side surface of the frame portion and the frame-shaped surface portion of the inner wall plate.

Therefore, it is possible to avoid a decrease in grain recovery efficiency due to the above leakage.

As one of the means for making the present invention more suitable,
The inner wall plate is provided with auxiliary members that extend at the lower end of the inner wall plate across the front and rear ends,
The auxiliary member includes a side surface forming a lower side surface portion corresponding to the lower side surface portion of the side surface of the frame-shaped surface portion.

According to this means, the auxiliary member can effectively enhance the shape retention at the lower end portion (free end portion) of the inner wall plate that is likely to be distorted by being away from the swinging fulcrum of the side wall body. Thereby, the attitude | position of the side wall body in an open position can be maintained in the favorable attitude | position with less distortion.

And since the side surface of the auxiliary member that enhances the shape retention at the lower end portion of the inner wall plate is used as the lower side surface portion of the frame-shaped surface portion, the side surface of the frame portion that is in close contact with the sealing member at the closed position of the side wall body The close state on the lower side with the frame-like surface portion of the inner wall plate can be kept good.

Accordingly, the holding mechanism can better hold the side wall body at the open position, and the grain recovery efficiency due to the leakage of the grain from the gap between the side surface of the frame part and the frame-like surface part of the inner wall plate can be improved. The decrease can be avoided more reliably.

As one of the means for making the present invention more suitable,
The side wall includes a guide portion that enters below the receiving net in the closed position,
The guide portion includes a guide surface that extends from the inner wall plate in a state in which an amount of downward entry of the receiving net at the closed position increases toward the lower side, and the front surface extends from the guide surface to the inner wall plate. And a rear surface, and is configured in a box shape.

According to this means, grains leaked from the receiving net can be guided to the left and right center side of the swing sorting mechanism provided below the receiving net by the guide surface of the guide portion. As a result, it is possible to prevent the occurrence of poor sorting in the swing sorting mechanism due to the grains that have leaked from the receiving net being concentrated and supplied to the left and right ends of the swing sorting mechanism.

And, the shape retaining property of the side wall body can be further enhanced by configuring the guide portion in a box shape. Thereby, the attitude | position of the side wall body in an open position can be maintained in the favorable attitude | position with less distortion. As a result, the side wall body can be held more favorably by the holding mechanism.

As one of the means for making the present invention more suitable,
The guide portion includes a bottom surface that extends from the guide surface to the inner wall plate and extends from the front surface to the rear surface, and is configured in a box shape that forms a closed space between the inner wall plate.

According to this means, the guide portion can be configured in a box shape having a higher shape retaining property, and the shape retaining property of the side wall body can be further enhanced. Thereby, the attitude | position of the side wall body in an open position can be maintained in the favorable attitude | position with less distortion. As a result, the side wall body can be held more favorably by the holding mechanism.

Moreover, since the guide part forms a closed space between the inner wall plate and the inner wall plate and the guide part, dust or the like leaking from the receiving net enters between the inner wall plate and the guide part. Can be prevented. Thereby, the effort which is needed when cleaning the inside of the threshing apparatus can be reduced.

As one of the means for making the present invention more suitable,
The holding mechanism includes a gas damper that extends along with the rising and swinging of the side wall body to the open position, and extends over the frame portion and the side wall body.
A connecting shaft that connects the piston rod of the gas damper to the frame portion or the side wall body, and a swinging member that swings using the connecting shaft as a fulcrum,
The swinging member is disposed between the frame portion and the gas damper, and has a length that enters between the cylinder tube of the gas damper and the connecting shaft as the side wall body reaches the open position. Is set to function as a lowering prevention mechanism that prevents the side wall body from descending from the open position.

According to this means, the operation force required for the swinging operation to the opening position of the side wall body can be reduced by the action of the gas damper. Thereby, the operativity at the time of swinging the side wall body to the open position can be improved.

When the side wall body reaches the open position, the swinging member located on the upper side of the gas damper automatically enters between the cylinder tube of the gas damper and the connecting shaft to prevent the gas damper from being contracted and Prevents descent from the open position. As a result, even when a gas leak occurs in the gas damper, a dedicated operation for preventing the occurrence of the problem that the side wall body unexpectedly descends from the open position due to the gas leak is prevented. Can be surely prevented.

As one of the means for making the present invention more suitable,
A locking mechanism that enables the side wall body to be fixedly held in the closed position;
The locking mechanism includes an engaged tool provided at a lower edge portion of the frame portion and an engaging tool provided at a lower end portion of the side wall body.

According to this means, the locking mechanism can be applied to the lower end portion of the side wall body that is easily separated from the frame portion by being separated from the swing fulcrum of the side wall body.

Therefore, it is possible to satisfactorily hold the side wall body in the closed position by the lock mechanism.

As one of the means for making the present invention more suitable,
The frame portion includes a position adjustment mechanism that enables the position adjustment of the engaged tool in the lateral direction of the machine body.

According to this means, due to a threshing frame or a manufacturing error of the side wall body, in the opening and closing direction of the side wall body, when a deviation occurs between the closed position of the side wall body and the fixed position of the side wall body by the lock mechanism, The positional deviation can be absorbed by the position adjusting mechanism. Thereby, the closed position of the side wall body and the fixed position of the side wall body by the lock mechanism can be matched regardless of the threshing frame or the manufacturing error of the side wall body.

Therefore, it is possible to appropriately perform the fixing and holding of the side wall body in the closed position by the lock mechanism without causing a decrease in productivity due to the demand for high accuracy in the production of the threshing frame and the side wall body.

As one of the means for making the present invention more suitable,
The frame portion includes a first member that is fixed to the lower edge portion, and a second member that supports the engaged tool,
Two elongated holes that are long in the lateral direction of the fuselage are formed in one of the first member and the second member, and the two elongated holes are formed in the other of the first member and the second member. A connecting portion that enables bolt connection between the first member and the second member using one of the long holes, and a protrusion that is movably inserted into the other long hole in the lateral direction of the machine body. The position adjusting mechanism is constituted by the two long holes, the connecting portion, and the protrusion.

According to this means, the first member and the second member are temporarily fixed with bolts using one of the long holes and the connecting portion, and the protrusion is inserted into the other long hole, whereby the first member The second member can be prevented from swinging relative to the first member while allowing the second member to move in the lateral direction of the machine body relative to the first member. That is, the rotation of the second member with respect to the first member can be reliably prevented while reducing the number of bolt connection portions between the first member and the second member. Thereby, position adjustment of the to-be-engaged tool in the body lateral direction can be easily performed. Then, after the position of the engaged tool is adjusted, the temporarily tightened bolt is finally tightened and the first member and the second member are bolted together, so that the engaged tool can be easily fixed at an appropriate position. it can.

Therefore, the position adjustment fixing of the engaged tool by the position adjustment mechanism can be performed easily and appropriately.

[2] The problem solving means corresponding to the problem [2] is as follows.
The characteristic configuration of the combine according to the present invention is as follows:
It has a relay transmission shaft that transmits engine power,
An input rotator to which the power of the engine is input to the relay transmission shaft via an endless rotating body for input, and a cutting output rotation for transmitting the input power to the reaping portion via an endless rotating body for output With the body,
The cutting output rotating body is provided on the outer end side of the relay transmission shaft with respect to the input rotating body.

According to the present invention, the cutting output rotator is provided on the shaft end side of the relay transmission shaft with respect to the input rotator, so that the output endless rotating body is more external to the relay transmission shaft than the input endless rotating body. It will be located on the end side, that is, at the location facing the outside of the aircraft.

As a result, when performing maintenance work on the output endless rotating body in which power is transmitted to the cutting part, the input endless rotating body is mounted without being removed, and the output endless rotating body is not troublesome. Can only be removed.

Therefore, it is possible to facilitate maintenance work in the transmission mechanism in which power is transmitted to the cutting part via the output endless rotating body.

In the present invention, it is preferable that the harvesting output rotator and the input rotator are integrally formed by a single transmission rotator.

According to this configuration, since the harvesting output rotator and the input rotator are integrally formed by a single transmission rotator, the harvesting output rotator and the input rotator are created separately from each other. Compared to the above, the manufacturing labor is reduced, and the assembling work for the relay transmission shaft is also simplified, so that the cost can be reduced.

In the present invention, the relay transmission shaft is rotatably mounted inside the cylindrical case,
The transmission rotating body is attached to a shaft end portion protruding outward from the cylindrical case in the relay transmission shaft so as to be integrally rotatable,
A recessed portion that is recessed along the axial direction is formed in the transmission rotating body,
It is preferable that the outer end portion of the cylindrical case is provided in a state of entering the recessed portion.

According to this configuration, the transmission rotating body is attached to the shaft end portion of the relay transmission shaft that protrudes outward from the cylindrical case. In the state where the outer end portion of the cylindrical case enters the recessed portion formed in a state where it is recessed into the transmission rotating body along the axial direction, and the end portion side of the cylindrical case is covered with the transmission rotating body, The transmission rotating body is positioned with respect to the cylindrical case.

As a result, the transmission rotating body attached to the shaft end of the relay transmission shaft is located in a state of overlapping the relay transmission shaft along the axial direction, and the shaft is overlapped by the radial direction. The transmission structure along the core direction can be made compact.

In the present invention, the transmission rotating body includes a wide multiple belt winding portion wound in a state where a plurality of transmission belts are arranged, and is positioned inside the multiple belt winding portion. It is preferable that the recessed portion is formed in such a state.

According to this configuration, the transmission rotating body includes a wide and continuous belt winding portion that is wound in a state where a plurality of transmission belts are arranged. That is, the endless rotating body for input is transmitted in combination with the power transmitted to the reaping unit in addition to the power transmitted to another device, for example, the barrel of the threshing device. In order to withstand the driving load, a plurality of transmission belts arranged in the lateral direction are provided as input endless rotating bodies.

And by forming a recessed portion in the inside of the wide multiple belt winding portion wound in a state where a plurality of transmission belts are arranged in this manner, the depth of insertion of the recessed portion is increased, and the shaft The transmission structure along the core direction can be further downsized.

In the present invention, at the outer end side of the cutting output rotating body at the shaft end of the relay transmission shaft, a transmission entering state for applying tension to the output endless rotating body and a transmission cutting state for releasing the application It is preferable that a tension clutch mechanism that can be switched between is supported.

According to this configuration, since the tension clutch mechanism is supported at the outer end side of the cutting output rotating body at the shaft end of the relay transmission shaft, the relay transmission can be easily performed from the outer side when performing maintenance work. The tension clutch mechanism provided at the end of the shaft can be removed.

When performing maintenance work on the output endless rotating body, by removing the tension clutch mechanism, the tension is released from the output endless rotating body, and the output endless rotating body can be removed as it is. The work can be easily performed.

In the present invention, the tension clutch mechanism includes a tension arm that is rotatably fitted and supported on the relay transmission shaft, and a tension ring body that is supported by the tension arm and acts on the output endless rotating body. It is preferable to have

According to this configuration, since the tension arm for supporting the tension ring body is rotatably supported using the relay transmission shaft, for example, a complicated structure such as a dedicated support member is provided in the fixed portion. The tension clutch mechanism can be supported with a simple support structure without incurring a reduction in size.

In the present invention, an urging mechanism for urging and urging the tension arm in a direction in which the tension ring body is separated from the output endless rotating body;
Based on an operation of a clutch lever provided in the driving unit, the tension ring body acts on the endless rotating body for output against the urging force of the urging mechanism to apply a tension force. A linkage operation mechanism for rotating the arm,
The tension ring body is supported at a position below the relay transmission shaft of the tension arm,
The urging mechanism is connected to a position above the relay transmission shaft of the tension arm,
It is preferable that the linkage operation mechanism is connected to a position below the relay transmission shaft in the tension arm.

According to this configuration, if the clutch lever provided in the operating unit is not operated, the tension wheel is separated from the output endless rotating body by the biasing force of the biasing mechanism, and the power is transmitted to the cutting unit. Is cut off. On the other hand, when the clutch lever is operated, the tension ring body acts on the endless rotating body for output by the operation of the linkage operation mechanism, and tension is applied, and power is transmitted to the cutting unit.

When the clutch lever is not operated and the output endless rotating body is driven to rotate, the tension wheel is reliably separated from the output endless rotating body by the biasing force of the biasing mechanism. The body is close to the endless rotating body for output and repeatedly touches and separates from the endless rotating body for output, so that there is no disadvantage such as unstable tension arm vibration. Can be driven.

A tension ring is supported at a position below the relay transmission shaft in the tension arm, and a biasing mechanism is connected to a position above the relay transmission shaft in the tension arm. Since the linkage operating mechanism is connected to the lower part of the relay transmission shaft, the tension wheel, urging mechanism, and linkage operating mechanism are appropriately distributed on both the upper and lower sides of the relay transmission shaft, so While the operation can be performed appropriately, the tension clutch mechanism can be reduced in width and stored in a compact shape.

In the present invention, it is preferable that the input power is distributed to the power transmitted to the cutting portion and the power transmitted to the handling cylinder in the relay transmission shaft.

According to this configuration, the power input to the relay transmission shaft through the input rotating body by the input endless rotating body is transmitted from the cutting output rotating body to the cutting unit through the output endless rotating body. Further, power is transmitted from the relay transmission shaft to the handling cylinder through a transmission mechanism for the handling cylinder. In this way, power is distributed on the relay transmission shaft and transmitted to the handling cylinder and the cutting part, respectively.

Other features and advantageous effects will be clarified by reading the following description with reference to the accompanying drawings.

It is a figure which shows 1st Embodiment of this invention (henceforth, it is the same also to FIG. 12), and is a left view of a full throwing type combine. It is a top view of a full throwing type combine. It is a vertical left view which shows the internal structure of a threshing apparatus. It is the vertical left side view of the threshing apparatus which shows the structure of the left side part in a threshing apparatus. It is the vertical left side view of the principal part which shows the structure regarding the opening-closing type side wall body in a threshing apparatus. It is a left view of the threshing apparatus which shows the structure of the left side part in a threshing apparatus. It is a vertical rear view of the principal part which shows the structure regarding the opening-closing type side wall body in a threshing apparatus. It is a disassembled perspective view which shows the structure of an openable-type side wall body. It is an expanded vertical rear view of the principal part which shows the seal structure etc. in an openable side wall body. They are an enlarged vertical rear view (a) and an enlarged perspective view (b) of the main part showing the configuration of the holding mechanism for holding the openable side wall body in the open position. It is an expanded vertical rear view of the principal part which shows the structure of the lock mechanism which hold | maintains an opening-and-closing type side wall body in a closed position. It is a cross-sectional top view of the principal part which shows the structure of a position adjustment mechanism. It is a figure which shows the combine by 2nd Embodiment (following, it is the same also to FIG. 32), Comprising: It is a whole side view of the normal type (all-fired type) combine as an example of a combine. It is a whole top view of a normal combine. It is a top view of an operation part. It is a side view of a prime mover. It is a top view which shows a fan rotation switching mechanism. It is operation | movement explanatory drawing of a fan rotation switching mechanism. It is operation | movement explanatory drawing of a fan rotation switching mechanism. It is a perspective view of a switching operation lever. It is a transmission system diagram. It is a side view which shows a cutting clutch. It is a front view which shows a mowing clutch. It is a side view which shows a cutting clutch. It is a vertical front view which shows a cutting clutch. It is a side view which shows a side panel support structure. It is a vertical front view which shows a side panel support structure. It is a disassembled perspective view of a panel support frame. It is a side view which shows a clutch operation structure. It is a front view which shows a clutch operation structure. It is a vertical side view of the support part of the main transmission lever. It is a vertical front view of the support part of the main transmission lever.

[First Embodiment]
The first embodiment will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the all-fired type (ordinary type) combine exemplified in this embodiment includes a body frame 1, a pair of left and right crawlers 2, a boarding operation unit 3, a cutting and conveying device 4, and a threshing device. 5 and the grain tank 6, etc., and is configured to a crawler traveling grain tank specification.

Note that the full throw-in type combine may be configured as a wheel traveling type that includes a pair of left and right front wheels and a pair of left and right rear wheels instead of the pair of left and right crawlers 2 as a traveling device. Moreover, it may replace with the grain tank 6 and you may comprise in the bag packing specification provided with a bag packing apparatus. Furthermore, you may comprise in a cabin specification provided with the cabin which forms the space for boarding operation.

As shown in FIGS. 1 and 2, the cutting and conveying device 4 includes a left and right divider 7, a rotating reel 8, a clipper type cutting mechanism 9, a screw conveying type auger 10, and a scraping conveying type feeder 11. It has. The left and right dividers 7 are arranged at both left and right ends of the front end portion of the cutting and conveying device 4. As the aircraft travels, the uncut cereals in front of the aircraft are divided into cereals that are to be harvested and cereals that are not to be harvested. The rotary reel 8 is disposed above the front portion of the cutting and conveying device 4. And with the traveling of the aircraft, the tip side of the harvested cereal is scraped backwards. The cutting mechanism 9 is provided at the bottom of the cutting and conveying device 4. Then, the stocker side of the harvest target culm is cut along with the traveling of the aircraft. The auger 10 is arranged behind the rotary reel 8 and the cutting mechanism 9. Then, the harvested cereals after cutting (hereinafter referred to as the harvested cereals) fed by scraping by the rotating reel 8 and cutting by the cutting mechanism 9 are gathered and conveyed to a predetermined position in the left-right direction, and the predetermined position To the communication point with the feeder 11 at the rear. The feeder 11 extends in a back-up posture from a communication location with the auger 10 to a communication location with the threshing device 5. Then, the harvested cereal meal sent out by the auger 10 is supplied and conveyed toward the threshing device 5.

The cutting and conveying device 4 swings up and down using a laterally-facing feeder drive shaft 12 provided at the conveyance end of the feeder 11 as a fulcrum. The raising / lowering drive of the cutting and conveying apparatus 4 is performed by an expansion / contraction operation of a hydraulic lifting / lowering cylinder 13 installed over the body frame 1 and the feeder 11.

As shown in FIGS. 1 to 4, the threshing device 5 is arranged in the left half of the body frame 1. The threshing frame 14 connected to the machine body frame 1, the openable / closable upper cover body 15, the openable / closable side wall body 16, the bar-type handling cylinder 17, the substantially U-shaped receiving net 18 in the front-rear direction, and the swing sorting mechanism 19, Karatsu 20, a first thing collection unit 21, a second thing collection unit 22, a shredder discharge mechanism 23, and the like.

As shown in FIGS. 3 to 7, the threshing frame 14 supports the upper cover body 15, the side wall body 16, the handling cylinder 17, the receiving net 18, and the like by its upper half. In addition, the lower half supports the swing sorting mechanism 19, the tang 20 and the shredder discharging mechanism 23. A frame portion 14A having a rectangular shape in a side view forming a maintenance opening 24 is provided at the left end portion located on the left outer end side of the machine body in the upper half portion. The opening 24 is formed in a rectangular shape in a side view so that the handling cylinder 17 and the receiving net 18 face the left outer side of the machine body. And the front-rear length and the vertical length are set to lengths that allow the entire entire receiving net 18 to face the left outer side of the aircraft.

The upper cover body 15 has its left end connected to the upper left end of the threshing frame 14 via five hinges 25, whereby a closed position covering the upper part of the handling cylinder 17 and an upper part of the handling cylinder 17 are provided. It swings up and down over the open position. That is, the upper part of the handling cylinder 17 is covered so that opening and closing is possible.

The side wall body 16 is provided with four support shafts 26 at the upper end thereof at a predetermined interval in the front-rear direction in a state in which the shaft centers thereof coincide with each other. Then, with these support shafts 26 as fulcrums, the shaft swings up and down over a lower closed position where the opening 24 is closed and an upper open position where the opening 24 is opened. Thereby, the opening 24 is closed so as to be openable and closable.

The handling cylinder 17 rotates clockwise around the front and rear handling axis 17A. Then, by this rotation, the scraping portion 17B at the front end feeds the harvested cereal meal from the feeder 11 backward. Further, the rear processing unit 17C performs the processing on the harvested cereal.

The receiving net 18 is equipped in a state of covering the handling section 17C of the handling cylinder 17 from below. Then, a selection object such as a grain obtained by the handling process by the rotation of the handling cylinder 17 is caused to leak. On the other hand, a long threshing cereal that does not leak from the receiving net 18 is guided to the shredding and discharging mechanism 23 at the rear. The receiving network 18 has a front and rear network 18A, an intermediate network 18B, and a rear network 18C. The receiving network 18 has a six-split structure that can be divided into left and right. Thereby, the receiving net | network 18 can be attached or detached from the opening 24 mentioned above in the state which assembled | attached the handling cylinder 17. As shown in FIG.

The swing selection mechanism 19 is positioned below the receiving net 18 and swings in the front-rear direction by the operation of an eccentric cam type drive unit 19A provided at the lower end of the rear end. As a result, the sieve sorting process is performed on the sorting object leaked from the receiving net 18. And by this sieving selection process, the grain etc. with large specific gravity of the selection object are leaked. In addition, sawdust having a small specific gravity is transferred to the shredding and discharging mechanism 23 at the rear.

The red pepper 20 is located at the front lower side of the swing sorting mechanism 19 and rotates counterclockwise as viewed from the left side about the horizontal axis 20A. Thereby, the sorting wind toward the swing sorting mechanism 19 is generated, and the sorting target is subjected to the wind sorting process. And by this wind power sorting process, leakage from the rocking sorting mechanism 19 such as fine sawdust is suppressed. Further, the fine sawdust and the like leaking from the swing sorting mechanism 19 are conveyed to the rear shredding and discharging mechanism 23 by wind power.

The 1st thing collection part 21 and the 2nd thing collection part 22 are arranged under the swing sorting mechanism 19 in a state where they are arranged in the front and back in that order. The 1st thing collection | recovery part 21 flows down and guides the single grain which leaks as a 1st thing from the front part side of the rocking | pulverization sorting mechanism 19 to the 1st screw 27 with which the bottom part was equipped. The 2nd thing collection part 22 flows down and guides the grain and bifurcated grain etc. with a branch incision which leaks as a 2nd thing from the rear side of the rocking | pulverization sorting mechanism 19 to the 2nd screw 28 with which the bottom part was equipped.

The No. 1 screw 27 feeds and conveys single-grained grains to a screw conveyance type lifting conveyor 29 connected to the right end portion thereof. The lift conveyor 29 lifts the single grain and supplies it to the adjacent grain tank 6. The second screw 28 feeds and conveys the grain with a branch branch, the bifurcated grain and the like to the second reduction mechanism 30 connected to the right end portion thereof. The No. 2 reduction mechanism 30 performs a handling process on the grain with a branch infarction from the No. 2 screw 28, the forked grain, and the like. Then, the grain with branches and bifurcated grains after the handling process is reduced and conveyed to the selection start end of the swing selection mechanism 19 as a selection target.

The shredder discharge mechanism 23 is connected to the rear end of the threshing frame 14. And by the some fixed blade 31 provided in the inside and the some rotary blade 33 which rotates integrally with the rotating shaft 32 facing left and right, etc. And cut it out of the machine.

As shown in FIG. 1 and FIG. 2, the grain tank 6 is arranged in the right half of the body frame 1 together with the boarding operation unit 3. And the conveyance termination part of the conveyance conveyor 29 is connected in communication with the upper left end part. Thereby, the single grain from the conveying conveyor 29 is stored. Moreover, 6 A of screw conveyance type grain discharge parts which enable discharge | emission to the exterior of the single grain stored in the inside are provided.

As shown in FIGS. 4 and 6, the threshing frame 14 rotatably supports the tang shaft 20A at the front end portion of the lower half thereof. In addition, at the front end portion of the upper half portion, the feeder driving shaft 12 of the cutting and conveying device 4 and a handling cylinder input shaft 35 are rotatably supported in a left-right orientation. Then, on the left side located on the left outer end side of the machine body, engine power via the Karatsu shaft 20A is supplied to the feeder drive shaft 12 and various types such as the handling cylinder 17 and the swing sorting mechanism 19 provided in the threshing device 5. A transmission system A is provided for transmission to the drive equipment.

The transmission system A includes a belt-type first transmission mechanism 36 that transmits power from the Karatsu shaft 20A to the handling cylinder input shaft 35, and a belt-type second transmission mechanism that transmits power from the handling cylinder input shaft 35 to the feeder drive shaft 12. 37, a belt-type third transmission mechanism 38 that is transmitted from the rod shaft 20A to the first screw 27 and the second screw 28, and a belt-type fourth transmission mechanism that is transmitted from the second screw 28 to the drive portion 19A of the swing sorting mechanism 19. A transmission mechanism 39 and a belt-type fifth transmission mechanism 40 that transmits power from the third transmission mechanism 38 to the rotary shaft 32 of the shredding discharge mechanism 23 are provided. And among these, the 1st transmission mechanism 36 and the 2nd transmission mechanism 37 are arrange | positioned in the front-end part of the left side part in the threshing frame 14. FIG. Further, the third transmission mechanism 38, the fourth transmission mechanism 39, and the fifth transmission mechanism 40 are provided in the lower half of the left side portion of the threshing frame 14. Thereby, the transmission system A is arranged on the left side of the threshing frame 14 in an L shape in a side view extending over the front end portion and the lower half portion of the left side portion so as to bypass the opening 24 described above. . As a result, the assembly and maintenance of the transmission mechanisms 36 to 40 in the transmission system A, the maintenance such as the cleaning of the handling cylinder 17 and the receiving net 18 using the opening 24, and the attachment and detachment of the receiving net 18 are performed on the left outer side of the machine body. Can be easily done.

The threshing device 5 includes a resin-made first cover body 41, a second cover body 42, and a third cover body 43 that detachably cover the transmission system A. The first cover body 41 is located at the front end portion of the upper half portion of the left side portion of the threshing frame 14 and covers the transmission portion of the transmission system A for the handling shaft input shaft 35 and the feeder drive shaft 12. The 2nd cover body 42 is located in the front half part of the lower half part in the left side part of the threshing frame 14, and has covered the transmission location with respect to the Kara 20 in the transmission system A, the 1st screw 27, etc. The 3rd cover body 43 is located in the latter half part of the lower half part in the left side part of the threshing frame 14, and covers the transmission part with respect to the drive part 19A of the rocking | swiveling selection mechanism 19 in the transmission system A, the 2nd screw 28, etc. Yes.

As shown in FIGS. 4 to 6, the threshing device 5 includes a gas damper 44 as a holding mechanism B that enables the side wall body 16 to be held at the open position. The gas damper 44 is disposed on the rear edge portion 14Aa of the frame portion 14A that forms the opening 24, and acts on the rear end portion of the side wall body 16.

That is, the gas damper 44 is arranged not on the front edge portion 14Ab of the frame portion 14A adjacent to the transmission system A but on the rear edge portion 14Aa of the frame portion away from the transmission system A, and the transmission system A and the gas damper 44 are threshed. It is appropriately dispersed around the opening 24 in the frame 14. Thereby, when performing maintenance such as cleaning for the handling cylinder 17 and the receiving net 18 using the opening 24, and attaching / detaching the receiving net 18, the occurrence of problems such as the transmission system A and the gas damper 44 becoming an obstacle is avoided. be able to. Further, it is possible to avoid the occurrence of problems such that the gas damper 44 becomes an obstacle when the transmission system A is assembled or maintained, or the transmission system A becomes an obstacle when the gas damper 44 is assembled or maintained. .

As shown in FIGS. 4 to 10, the side wall body 16 has a rectangular inner wall plate 45 adjacent to the receiving net 18 in the closed position, and a rectangular side wall view positioned at the left outer side of the inner wall plate 45 with a space therebetween. A shaped outer wall plate 46, a front wall plate 47 spanning the front end of the inner wall plate 45 and the front end of the outer wall plate 46, and a rear wall plate 48 spanning the rear end of the inner wall plate 45 and the rear end of the outer wall plate 46, Etc. These wall plates 45 to 48 form a rectangular cross section at the closed position. Further, a gas damper mounting portion 16A is provided on the rear wall plate 48 extending between the inner wall plate 45 and the outer wall plate 46 along the opening / closing direction of the side wall body 16.

With the above configuration, the side wall body 16 has a rectangular longitudinal cross section when viewed from the left and right directions of the airframe in the open position. Thereby, even if the operation position of the gas damper 44 with respect to the side wall body 16 is shifted to the rear end portion of the side wall body 16, the posture of the side wall body 16 at the open position can be maintained in a good posture with little distortion.

Further, the rear wall plate 48 on which the gas damper 44 acts has a strong resistance against the load in the opening / closing direction of the side wall body 16 by spanning the inner wall plate 45 and the outer wall plate 46 along the opening / closing direction of the side wall body 16. ing. Therefore, by holding the side wall body 16 in the open position by the gas damper 44, even if the weight of the side wall body 16 acts on the rear wall plate 48, deformation of the rear wall plate 48 due to the weight can be avoided.

As shown in FIGS. 7 to 9, the inner wall plate 45 of the side wall body 16 is provided with a peripheral wall portion 45A extending from the four sides to the outer wall plate side in an endless belt shape along the four sides in order to enhance the shape retention and strength. ing. A front wall plate 47 and a rear wall plate 48 welded to the outer wall plate 46 are bolted to the peripheral wall portion 45A.

As shown in FIGS. 5 to 10, the side wall body 16 includes an upper connecting member 49 that connects the front wall plate 47 and the rear wall plate 48 across the front wall plate 47 and the rear wall plate 48 at the upper end portion of the side wall body 16. And the lower side connection member 50 which connects the front wall board 47 and the rear wall board 48 over the front wall board 47 and the rear wall board 48 in the lower end part of the side wall body 16 is provided. And the upper side connection member 49 and the lower side connection member 50 form the shape of the front-back direction view in the substantially horizontal U shape so that they may have high shape retention property and intensity | strength itself. Further, the side wall body 16 includes a top plate 51 that extends over the front wall plate 47 and the rear wall plate 48 and extends over the outer wall plate 46 and the upper connecting member 49. The top plate 51 is connected to the outer wall plate 46 by being integrally formed with the outer wall plate 46. And it connects with the front wall board 47, the rear wall board 48, and the upper side connection member 49 by welding.

Thereby, the shape retention of the side wall body 16 can be effectively improved, and the posture of the side wall body 16 at the open position can be maintained in a good posture with less distortion.

As shown in FIGS. 7, 8, 10, and 11, the lower connecting member 50 is an outer surface facing the lower end portion 46 A of the outer wall plate 46 that extends downward from the lower ends of the front and

rear wall plates

47 and 48. 50A. The lower connecting member 50 is disposed at the end of the front wall plate 47 and the rear wall plate 48 on the outer wall plate side, and the outer surface 50A of the lower connecting member 50 is in surface contact with the lower end portion 46A of the outer wall plate 46. I am letting.

As a result, at the opening position of the side wall body 16, the lower connecting member 50 is positioned below the lower end portion (free end portion) 46A of the outer wall plate 46, which is likely to be distorted by being away from the swing fulcrum of the side wall body 16. It will be received from and supported. As a result, the posture of the side wall body 16 at the open position can be maintained in a good posture with less distortion.

As shown in FIGS. 7, 8, and 10, the upper connecting member 49 of the side wall body 16 has four brackets 52 welded to the groove-like recess 49A at a predetermined interval in the front-rear direction. Each bracket 52 is formed in a substantially U shape that supports both end portions of the support shaft 26 fitted in the boss 53 so as to be relatively rotatable. Each boss 53 has an outer peripheral portion welded to one end of an L-shaped connecting member 54. Each connecting member 54 has the other end portion as a bolt connecting portion with the threshing frame 14. The threshing frame 14 is provided with an extending portion 14 B that extends to the left outward from the upper end portion of the threshing frame 14 and has a length extending over both front and rear ends. And the extension part 14B is equipped with the bolt connection part with each connection member 54, The extension part 14B is comprised so that it may become a support part which supports the side wall body 16 so that a rocking | swiveling up and down is possible.

That is, the upper connecting member 49 that enhances the shape retaining property of the side wall body 16 and has high shape retaining property and strength itself is also used as a member that connects the upper end portion of the threshing frame 14 via the support shaft 26 and the like. is doing. Thereby, the connection part with the threshing frame 14 in the side wall body 16 does not provide the new reinforcement member etc. in the connection part, and the distortion of the distortion which has the high shape retention property and intensity | strength which can perform opening and closing operation of the side wall body 16 favorably. It can be configured in a small state.

As shown in FIGS. 7 to 9, the threshing device 5 is provided on the side surface 14Ac (hereinafter referred to as the left side surface 14Ac) of the threshing frame 14 on the side wall body side and the left side surface 14Ac of the frame section 14A on the side wall body 16. A seal member 55 is provided to closely contact the corresponding frame-like surface portion 45B of the inner wall plate 45 at the closed position of the side wall body 16. This prevents the occurrence of a problem that the grain obtained by the handling process by the handling cylinder 17 in the threshing device 5 leaks from the gap between the left side surface 14Ac of the frame portion 14A and the frame-shaped surface portion 45B of the inner wall plate 45. Can do.

In the frame portion 14A, the front side surface portion 14a, the rear side surface portion 14b, and the upper side surface portion 14c of the left side surface 14Ac are located on the same plane, and only the lower side surface portion 14d is more than the other side surface portions 14a to 14c. It is configured to be located on the left outer side.

The inner wall plate 45 of the side wall body 16 includes an auxiliary member 56 that extends across the front and rear ends of the inner wall plate 45 at the lower end thereof. The auxiliary member 56 is L-shaped when viewed in the front-rear direction, and its upper surface is welded to the bottom surface of the peripheral wall portion 45A of the inner wall plate 45, so that the lower side surface portion of the frame portion 14A is at the closed position of the side wall body 16. It is configured to have a side surface 56a facing 14d. The side surface 56a forms a lower side surface portion 45Ba corresponding to the lower side surface portion 14d of the left side surface 14Ac of the frame portion 14A in the frame-shaped surface portion 45B of the inner wall plate 45.

Thereby, the shape retention at the lower end portion (free end portion) of the inner wall plate 45, which is likely to be distorted by being away from the swing fulcrum of the side wall body 16, can be effectively enhanced by the auxiliary member 56. Since the side surface 56a of the auxiliary member 56 is used as the lower side surface portion 45Ba of the frame-like surface portion 45B, the left side surface 14Ac and the inner wall plate of the frame portion 14A are in close contact with each other through the seal member 55 at the closed position of the side wall body 16. The close state on the lower side with the frame-like surface portion 45B of 45 can be kept good.

As shown in FIGS. 7 to 9, the seal member 55 is bonded to the longitudinal front seal portion 55A that adheres to the front side surface 14a of the left side surface 14Ac in the frame portion 14A of the threshing frame 14, and to the rear side surface portion 14b of the left side surface 14Ac. The vertically long rear seal portion 55B, the horizontally long upper seal portion 55C adhered to the upper side surface portion 14c of the left side surface 14Ac, and the lower side surface portion 45Ba (auxiliary member 56) of the frame-shaped surface portion 45B of the inner wall plate 45 of the side wall body 16. The side face 56a) is attached with a horizontally long lower seal portion 55D.

As shown in FIGS. 5 and 7 to 10, the side wall body 16 includes guide portions 57 that enter the lower part of the receiving net 18 at the closed position of the side wall body 16 in each of the front half portion and the rear half portion of the inner wall plate 45. ing. Each guide portion 57 is provided with a guide surface 57A extending from the upper and lower intermediate portion of the inner wall plate 45 to the lower right side in a state in which the amount of downward entry of the receiving net 18 at the closed position increases toward the lower side. Further, a front surface 57B, a rear surface 57C, and a bottom surface 57D extending from the guide surface 57A to the inner wall plate 45 are provided. By providing each of these surfaces 57A to 57D, a box-like shape that forms a closed space 58 between the inner wall plate 45 and the inner wall plate 45 is formed. Further, by setting the front-rear widths thereof to be slightly smaller than the front-rear width of the inner wall plate 45, the swing sorting mechanism 19 is moved from the left end of the receiving net 18 between the front-rear guide parts 57. A gap 59 is formed to allow the sorting object to leak to the left end.

With this configuration, most of the objects to be filtered filtered from the left end portion of the receiving net 18, which has a large amount of leakage due to being positioned on the upper side in the rotational direction of the handling cylinder 17, are shaken by the guide surfaces 57 A of the respective guide portions 57. It can be guided to the left and right center side of the dynamic sorting mechanism 19. As a result, it is possible to prevent a sorting defect from occurring in the swing sorting mechanism 19 due to the sorting objects leaking from the receiving net 18 being concentrated and supplied to the left end side of the swing sorting mechanism 19. it can.

And the shape retention of the side wall body 16 can further be improved by constituting each guide part 57 in a box shape. Thereby, the attitude | position of the side wall body 16 in an open position can be maintained in the favorable attitude | position with less distortion.

Further, since each guide portion 57 forms a closed space 58 between the inner wall plate 45 and the selection target object that has leaked from the receiving net 18, the selection target object enters between the inner wall plate 45 and each guide portion 57. Occurrence can be prevented. Thereby, the fall of the grain collection | recovery efficiency resulting from a grain entering between the inner wall board 45 and each guide part 57 can be avoided. Further, it is possible to prevent the sawdust or the like from entering between the inner wall plate 45 and the guide portion 57 and adhering to the inner wall plate 45 and the guide portion 57. As a result, it is possible to reduce the labor required for cleaning the inside of the threshing device 5.

In each guide portion 57, the guide surface 57A and the bottom surface 57D are formed by bending the first steel plate 60 so that they are continuous. The front surface 57B is formed of a second steel plate 61, and the rear surface 57C is formed of a third steel plate 62 in a triangular shape as viewed in the front-rear direction and enters between the inner wall plate 45 of the side wall body 16 and the first steel plate 60. And the 2nd steel plate 61 is welded to the front-end part of the 1st steel plate 60, and the 3rd steel plate 62 is welded to the rear-end part of the 1st steel plate 60, and the guide part 57 is comprised. Each guide portion 57 forms a closed space 58 with the inner wall plate 45 by welding with the inner wall plate 45 of the side wall body 16.

As shown in FIGS. 4, 5, and 10, the frame portion 14 A of the threshing frame 14 includes a first connection shaft 63 that connects the piston rod 44 A of the gas damper 44 to the lower end portion of the rear edge portion 14 Aa, and a first connection shaft. And an oscillating member 64 which oscillates around 63 as a fulcrum. The side wall body 16 includes a second connecting shaft 65 that connects the cylinder tube 44B of the gas damper 44 to the mounting portion 16A. The gas damper 44 is installed over the first connecting shaft 63 of the frame portion 14 A and the second connecting shaft 65 of the side wall body 16 so as to extend as the side wall body 16 moves upward and downward to the open position.

The swing member 64 is disposed between the frame portion 14A and the gas damper 44. The shape in the vertical direction is formed in a substantially U shape that is externally fitted to the cylinder tube 44B of the gas damper 44 at the closed position of the side wall body 16. The vertical length is set to a length that enters between the cylinder tube 44B of the gas damper 44 and the first connecting shaft 63 of the frame portion 14A as the side wall body 16 reaches the open position. Accordingly, the swing member 64 is caused to function as a lowering prevention mechanism C that prevents the side wall body 16 from being lowered from the open position.

With the above configuration, the operation force required for the swinging operation of the side wall body 16 to the open position can be reduced by the action of the gas damper 44. As a result, the operability when swinging the side wall body 16 to the open position can be improved.

When the side wall body 16 reaches the open position, the swinging member 64 located above the gas damper 44 at this time automatically moves between the cylinder tube 44B of the gas damper 44 and the first connecting shaft 63 of the frame portion 14A. The gas damper 44 is prevented from contracting and the side wall body 16 is prevented from descending from the open position. As a result, even when a gas leak occurs in the gas damper 44, the occurrence of a problem that the side wall body 16 is unexpectedly lowered from the open position due to the gas leak is prevented from occurring. It is possible to reliably prevent the operation without requiring the operation.

As shown in FIGS. 5, 7, and 11, the threshing device 5 includes a lock mechanism 66 that enables the side wall body 16 to be fixedly held at the closed position. The lock mechanism 66 includes a pair of front and rear engaged tools 67 provided on the lower edge portion 14Ad of the frame portion 14A of the threshing frame 14 and a pair of front and rear engagement tools 68 provided on the lower end portion of the side wall body 16. ing. Thereby, the lock mechanism 66 can be made to act on the lower end portion of the side wall body 16 that is easily separated from the frame portion 14A by being separated from the swing fulcrum of the side wall body 16. As a result, it is possible to satisfactorily hold the side wall body 16 in the closed position by the lock mechanism 66.

Each engaged tool 67 is constituted by a shaft member 69 facing forward and backward. And it is provided in the extension end of the support arm 70 before and behind extending from the lower edge part 14Ad of the frame part 14A leftward. Each engaging tool 68 includes a resin fixed member 71 fixed to the lower end portion of the side wall body 16 and a resin movable member 72 engaged and connected to the fixed member 71 so as to be swingable up and down. Each fixing member 71 includes a recess 71 A that allows the shaft member 69 to be engaged, and an elastic biasing portion (not shown) that biases the movable member 72 downward. Each movable member 72 is formed in a hook shape that engages with a shaft member 69 engaged with the recess 71 A of the fixed member 71 by downward swing. Further, it swings up and down over an engagement position where it engages with the shaft member 69 engaged with the recess 71 A of the fixing member 71 and an upper release position where the engagement with the shaft member 69 is released. At the left end portion thereof, an operation portion 72A is provided which enables an upward swing operation against the action of the elastic urging portion manually. Further, an interlocking portion that enables an upward swinging operation against the action of the elastic biasing portion due to contact with the shaft member 69 interlocked with the swinging operation to the closed position of the side wall body 16 at the right end portion thereof. 72B.

Accordingly, when the side wall body 16 is swung to the closed position, the side wall body 16 is interlocked with the arrival of the side wall body 16 to the closed position by the action of each elastic urging portion in the lock mechanism 66 and the action of each interlocking portion 72B. 16 can be automatically held fixed in the closed position. The fixing and holding of the side wall body 16 in the closed position by the lock mechanism 66 can be easily released by manually operating the operation portions 72A of the movable members 72 in the lock mechanism 66.

As shown in FIGS. 11 and 12, the frame portion 14A of the threshing frame 14 includes the front and rear support arms 70 described above. A position adjustment mechanism D that allows the position of each shaft member 69 to be adjusted in the lateral direction of the machine body by allowing the front and rear support arms 70 to adjust the extension length of each support arm 70 to the left. It has. Thereby, due to manufacturing errors of the threshing frame 14 and the side wall body 16, a deviation occurred between the closed position of the side wall body 16 and the fixing position of the side wall body 16 by the lock mechanism 66 in the opening and closing direction of the side wall body 16. In some cases, the positional deviation can be absorbed by the position adjusting mechanism D. As a result, the closed position of the side wall body 16 and the fixed position of the side wall body 16 by the lock mechanism 66 can be matched regardless of the manufacturing error of the threshing frame 14 or the side wall body 16. Fixing and holding in the closed position can be performed properly.

Each support arm 70 includes a first U-shaped first member 73 that is fixed to the lower edge portion 14Ad of the frame portion 14A, and a pair of front and rear second members 74 that support the shaft member 69. In each second member 74, two long holes Da and Db that are long in the lateral direction of the machine body are formed side by side in the lateral direction of the machine body. Moreover, the connection part Dc which enables the bolt connection of the 1st member 73 and the 2nd member 74 using the long hole Da by the side of the threshing frame in each 2nd member 74 in the front and back both parts in the 1st member 73, The projections Dd that are movably engaged with the long holes Db on the side wall of each second member 74 are arranged in the horizontal direction of the machine body. The two long holes Da, Db, the connecting portion Dc, and the projection Dd constitute a position adjusting mechanism D provided in each support arm 70.

According to this configuration, in each support arm 70, the first member 73 and the second member 74 are connected to each other by using each connecting portion Dc of the first member 73 and the long hole Da on the threshing frame side of each second member 74. The body of each second member 74 with respect to the first member 73 by temporarily fixing with the bolt 75 and engaging each projection Dd of the first member 73 into the long hole Db on the side wall body side of each second member 74. The swinging displacement of each second member 74 relative to the first member 73 can be prevented while allowing lateral movement. That is, it is possible to reliably prevent the rotation of each second member 74 with respect to the first member 73 while reducing the number of bolt connection portions between the first member 73 and each second member 74. Thereby, the position adjustment of the shaft member 69 in the lateral direction of the machine body can be easily performed. Then, after adjusting the position of the shaft member 69, the bolt 75 in a temporarily fixed state is finally tightened to connect the first member 73 and each second member 74 to each other, thereby easily fixing the shaft member 69 at an appropriate position. be able to. That is, the position adjustment fixing of the shaft member 69 by each position adjustment mechanism D can be performed easily and appropriately.

[Another embodiment of the first embodiment]

[1] The all-throw-in type combine may be one in which the threshing device 5 is provided in the right half of the body frame 1. In this case, the opening 24 and the side wall body 16 are positioned at the right end of the threshing device 5 so that the handling cylinder 17 and the receiving net 18 can face the right outside of the machine body.

[2] The threshing device may be configured such that the drum 17 is used as the handling cylinder 17. Further, the receiving network 18 may be configured in a four-divided structure that can be divided into left and right by a front and rear divided structure. *

[3] The number of front and rear support shafts 26 that support the side wall body 16 so as to be swingable up and down can be variously changed according to the front and rear length or weight of the side wall body 16. For example, when the length of the side wall 16 is increased or when the weight of the side wall 16 is increased, the number of the front and rear support shafts 26 may be increased to five or more. On the contrary, when the length of the side wall body 16 is shortened or when the weight of the side wall body 16 is reduced, the number of the front and rear support shafts 26 may be reduced to three or less.

[4] The holding mechanism B can be installed across the frame portion 14A of the threshing frame 14 and the side wall body 16 by swinging the side wall body 16 up to an open position or a position above the open position, for example. It may be configured by a swinging or detachable tension member provided in the rear edge portion 14Aa of the frame portion 14A so as to be possible. Further, it is constituted by a stretchable stretching member provided at the rear edge portion 14Aa of the frame portion 14A so as to switch from the bent state to the extended state in conjunction with the swinging operation of the side wall body 16 from the closed position to the open position. May be.

[5] The side wall body 16 may be one in which the top plate 51 is configured by a dedicated member. Further, the top plate 51 may be integrally formed with the inner wall plate 45 or the upper connecting member 49. Further, the top plate 51 may not be provided.

[6] The side wall body 16 may be formed by integrally forming either or both of the front wall plate 47 and the rear wall plate 48 on the inner wall plate 45 or the outer wall plate 46.

[7] The side wall body 16 may include a bottom plate.

[8] The side wall body 16 may be provided with a mounting portion 16A for the holding mechanism in the vicinity of the rear wall plate 48 in the inner wall plate 45 or the outer wall plate 46.

[9] The side wall body 16 may include any one of the upper connecting member 49 and the lower connecting member 50. Further, the upper connecting member 49 and the lower connecting member 50 may not be provided.

[10] The side wall body 16 may not have the outer surface 50A of the lower connecting member 50 brought into surface contact with the lower end portion 46A of the outer wall plate 46.

[11] The side wall body 16 may include a dedicated member that enables connection to the upper end portion of the threshing frame 14 via the support shaft 26.

[12] The side wall body 16 may include a single guide portion 57 that extends across the front and rear ends of the inner wall plate 45. Further, three or more guide portions 57 may be arranged in the front-rear direction within the front-rear width of the inner wall plate 45.

[13] The inner wall plate 45 of the side wall body 16 may not include the peripheral wall portion 45A. Further, instead of the peripheral wall portion 45A, a front wall portion and a rear wall portion that enable bolt connection to the front wall plate 47 or the rear wall plate 48 may be provided.

[14] The inner wall plate 45 of the side wall body 16 may not include the auxiliary member 56. Further, a portion corresponding to the auxiliary member 56 may be bent at the lower end thereof.

[15] The upper connecting member 49 of the side wall body 16 may have an L-shaped or C-shaped shape when viewed in the front-rear direction.

[16] The lower connecting member 50 of the side wall body 16 may be formed in an L-shape or a C-shape when viewed in the front-rear direction.

[17] The guide portion 57 of the side wall body 16 may have an opening formed on the bottom surface 57D. Further, the bottom surface 57D may not be provided.

[18] The side surface 14Ac on the side wall body side of the frame portion 14A of the threshing frame 14 is formed so as to be entirely located on the same surface, and the frame shape of the inner wall plate 45 in the side wall body 16 corresponding to the side surface 14Ac. You may form the surface part 45B so that the whole may be located on the same surface.

[19] The threshing frame 14 is connected in such a manner that the piston rod 44A of the gas damper 44 is connected to the side wall body 16 via the second connecting shaft 65, and the swinging member 64 swings around the second connecting shaft 65 as a fulcrum. The swinging member 64 is arranged between the frame portion 14A of the gas damper 44 and the gas damper 44, and as the side wall body 16 reaches the open position, the swing member 64 is connected to the cylinder tube 44B of the gas damper 44 and the second connecting shaft 65 of the side wall body 16. May be configured to prevent the side wall body 16 from descending from the open position.

[20] The lock mechanism 66 includes, for example, an engagement hole provided as an engaged tool 67 in the lower edge portion 14Ad of the frame portion 14A, and an engagement pin provided as an engagement tool 68 at the lower end portion of the side wall body 16. It may be configured.

[21] The position adjusting mechanism D is formed with two long holes Da and Db that are long in the lateral direction of the fuselage in the first member 73 fixed to the lower edge portion 14Ad of the frame portion 14A, and the engaged member 67 is You may comprise so that the 2nd member 74 to support may be equipped with the connection part Dc for bolt connection, and the protrusion Dd for engagement. In addition, two elongated holes Da and Db are formed in one of the first member 73 and the second member 74 in the vertical direction, and on the other side, a connecting part Dc for bolt connection and a protrusion for engagement Dd may be formed side by side.

[Second Embodiment]
Next, a case where the second embodiment is applied to a normal type (all-throw-in type) combine as an example of a combine will be described with reference to FIGS.

〔overall structure〕
FIG. 13 and FIG. 14 show a normal combine that harvests rice, wheat and the like. This combine is provided with a traveling machine body equipped with a pair of left and right crawler type traveling devices 102 at the lower part of the machine body frame 101, and the planted culm to be harvested is harvested at the front part of the traveling machine body and conveyed backward. A cutting and conveying unit 103 as a cutting unit is connected to be swingable up and down around a horizontal axis. Then, a threshing device 104 and a threshing device 104 that perform a handling process on the harvested cereal from the harvesting conveyance unit 103 and a sorting process on the threshing product obtained by the handling process on the machine body frame 101. Tank 105 for storing the grain from the grain, grain discharging device 106 for discharging the grain stored in the grain tank 105 to the outside of the machine, the driving unit 107 on which the operator gets on and operates Is provided.

The operation unit 107 is located on the right side of the front part of the machine body, and the grain tank 105 is located behind the operation unit 107. The threshing device 104 and the grain tank 105 are arranged in the left-right direction with the threshing device 104 located on the left side and the grain tank 105 located on the right side. A driving engine 108 is provided below the operation unit 107, and the power of the engine 108 is transmitted to each unit.
In this embodiment, when the left direction and the right direction are defined, the left and right are defined with reference to the aircraft traveling direction view.

The cutting and conveying unit 103 divides the planted cereals into planted cereals that are to be harvested and planted cereals that are not to be harvested, and the planted cereals to be harvested that are harvested. Rotating reel 110 that rakes back, clipper-shaped cutting device 111 that cuts the planted side of the planted cereal to be harvested, and the chopped cereal after cutting is gathered to a predetermined position on the center side in the left-right direction. And a feeder 113 that conveys the harvested cereal meal toward the threshing device 104, and the like. The cutting and conveying unit 103 is supported by a hydraulic cylinder (not shown) so as to be movable up and down around the horizontal axis P1.

Although not described in detail, the threshing device 104 is provided with a feeder 113 by a handling cylinder 115 (see FIG. 21) that rotates around the front and rear axis around the upper side of the internal space surrounded by the left and right side walls and the upper top plate. After handling the harvested cereal meal that is conveyed more, the treated product is sorted into grains, second crops, waste straw scraps, and the like. The grain is transported to the horizontal side by the first recovery screw 116 (see FIG. 21), then transported upward by the vertical transport device 117, and stored in the grain tank 105. The second product is transported to the horizontal side by the second recovery screw 118 (see FIG. 21) and then reduced to the inside of the threshing device 104 by the second product reducing device 119. Discharged. After the harvesting operation, the grain stored in the grain tank 105 is discharged out of the machine by the grain discharging device 106.

As shown in FIG. 13, a bottom screw 105 a is provided at the bottom of the grain tank 105 to feed the stored grain outward to the rear side. There is provided a grain discharging device 106 that conveys the grain sent outward from the lower part of the grain tank 105 by the bottom screw 105a and discharges it to a discharge location (not shown) outside the machine body.

The grain discharging device 106 is a screw-type conveying device having a well-known structure, and is a vertical screw that conveys the grain that has been sent outward in a lateral direction by a bottom screw 105 a provided at the lower part of the grain tank 105 upward. The conveyor 106a and the horizontal screw conveyor 106b which conveys a grain in a horizontal direction from the conveyance termination part of the vertical screw conveyor 106a are provided. In addition, the connecting case 106c for connecting the lower part of the vertical screw conveyor 106a and the threshing device 104, the vertical screw conveyor 106a and the horizontal screw conveyor 106b communicate with each other so as to be able to convey the grain, and the horizontal axis is provided in the middle. And a connecting portion 106d that is connected so as to be relatively rotatable. The grain discharging device 106 can discharge the grain to the outside from a discharge port 106e formed at the tip of the horizontal screw conveyor after conveying the grain.

Then, after the power from the engine 108 is transmitted to the bottom screw 105a via the belt tension type discharge clutch 120, the power is transmitted to the grain discharging device and rotationally driven to perform the grain discharging operation.

The whole grain discharging device 106 is configured to be freely swiveled around the vertical axis Y at the center of the vertical screw conveyor 106a by driving the turning motor M. Further, the horizontal screw conveyor 106b is configured to be swingable up and down around the horizontal axis X by driving the lifting cylinder CY.

As shown in FIG. 16, a driving section 127 is provided below the driving seat 107 A of the driving section 107. As shown in FIG. 15, the prime mover 127 includes an engine 108, a radiator 121 for cooling the engine, a rotating fan (hereinafter abbreviated as “fan”) 122 for passing cooling air through the radiator 121, A fan rotation switching mechanism 123 (an example of a ventilation state switching mechanism) that can change the rotation direction is provided. Further, a dust-proof net 124 that is an example of a dust removing tool that prevents intrusion of dust and the like into the cooling air supplied to the radiator 121 is provided.

In addition, an air cleaner 125 for supplying clean air for fuel to the engine 108 and a pre-cleaner 126 for supplying air from which a large amount of dust has been removed from the outside air to the air cleaner 125 are provided. As shown in FIGS. 13 and 14, the air cleaner 125 is provided on the upper side of the engine 108 and on the rear side of the driver seat 107A. On the other hand, the pre-cleaner 126 is provided in a state of being positioned at a position higher than the canopy 107 B provided in the driving unit 107 at the left rear end of the driving unit 107. By deploying at such a position, the canopy 107B provided integrally therewith does not interfere with the pre-cleaner 126 when the grain tank is extended to the outward maintenance position.
That is, the grain tank 105 is provided so as to be rotatable around the vertical axis of the vertical screw conveyor 106a, and its posture can be switched between an action position where the grain tank 105 is retracted toward the inward side of the machine body and a maintenance position which projects outward on the lateral side of the machine body. It is configured. And it is trying to avoid that the canopy 107B interferes with the pre-cleaner 126 with the posture change of the grain tank 105.

[Fan rotation switching mechanism]
Next, the structure of the fan rotation switching mechanism 123 will be described.
As shown in FIG. 16, the output pulley 128 attached to the output shaft 108 a of the engine 108, the idle pulley 130 rotatably attached to the rotary shaft 129 supported on the side surface of the engine 108, and the input pulley 132 of the alternator 131. The 1st fan belt 133 is wound over. The tension pulley 134 always applies transmission tension to the first fan belt 133.

As shown in FIGS. 16 to 19, a fan pulley 122a that rotates integrally with the fan 122 is externally fitted to the rotary shaft 129, and the switching oscillator 135 is externally fitted to the rotary shaft 129 so as to be relatively rotatable. Has been. In addition, a forward rotation pulley 136 formed by superimposing two

pulleys

136a and 136b in the axial direction and a reverse pulley 137 formed by superimposing two

pulleys

137a and 137b in the axial direction are switched. The swinging body 135 is rotatably attached. A second fan belt 138 is wound around the fan pulley 122a, one pulley 136a of the forward pulley 136, and one pulley 137a of the reverse pulley 137.

When the switching rocking body 135 is switched to the cooling position shown in FIG. 19, the forward pulley is attached to the inner surface of the first fan belt 133 that is always rotating in the direction of the arrow by the output pulley 128 that rotates in accordance with the output of the engine 108. The other pulley 136b of 136 is pressed. The rotation of the first fan belt 133 is transmitted to the second fan belt 138 through the two

pulleys

136a and 136b of the forward pulley 136, and the second fan belt 138 is rotated clockwise in the direction of the arrow in the figure. . The power of the second fan belt 138 rotated in this way is transmitted to the fan pulley 122a whose rotation direction is integrated with the fan 122 as normal rotation driving, and the fan 122 is in the normal rotation driving state. In this state, the fan 122 supplies the engine cooling air from the outside of the prime mover 127 to the radiator 121 through the dust screen 124. That is, it is a normal flow state in which outside air is sucked through the dust net 124 and the wind is passed through the radiator 121.

When the switching rocking body 135 is switched to the dust removal position shown in FIG. 18, the reverse pulley 137 is attached to the outer surface of the first fan belt 133 that is always rotating in the direction of the arrow by the output pulley 128 that rotates in accordance with the output of the engine 108. The other pulley 137b is pressed. The rotation of the first fan belt 133 is transmitted to the second fan belt 138 through the two

pulleys

137a and 137b of the reverse rotation pulley 137, and the second fan belt 138 is rotated counterclockwise in the direction of the arrow in the figure. . The power of the second fan belt 138 rotated in the reverse direction as described above is transmitted as a reverse drive to the fan pulley 122a whose rotation direction is integrated with the fan 122, and the fan 122 is in a reverse rotation drive state. In this state, the fan 122 blows air toward the dust-proof net 124 through the radiator 121 and blows away dust such as straw scraps adhering to the dust-proof net 124 to be cleaned. In other words, this is a reverse flow state in which the wind passes from the radiator 121 toward the dust net 124.

Next, a structure for switching the fan rotation switching mechanism 123 will be described.
As shown in FIGS. 16, 18, and 19, the fan rotation switching mechanism 123 is in a normal flow state based on an artificial operation by a switching operation lever 141 as a switching operation tool provided on the side panel 140 of the operation unit 107. And a backflow state. Specifically, on the basis of the operation of the switching operation lever 141, the switching rocking body 135 pushes the forward pulley 136 against the first fan belt 133 as shown in FIG. 19, and the first position as shown in FIG. The fan belt 133 is configured to be switched to a dust removal position where the reverse pulley 137 is pressed against the fan belt 133.

As shown in FIGS. 15 and 16, the switching operation lever 141 is provided at a position located on the rear left side of the driver seat 107 A and on the rear side of the side panel 140, and extends in the front-rear direction frame body extending along the front-rear direction. 142 is supported so as to be swingable around the horizontal axis P2. At the base end portion of the switching operation lever 141, a balance swinging arm 143 extending in the front-rear direction in a state intersecting with the longitudinal direction of the switching operation lever 141 is provided so as to be swingable integrally. In addition, a coil spring (an example of an urging mechanism) 145 is connected to a middle portion on the rear end side of the balance swinging arm 143 and a spring receiving portion 144 located on the lower side, and the switching operation lever 141 is counterclockwise in FIG. That is, it is urged to swing toward the positive flow state.

As shown in FIG. 16, the front-rear frame body 142 is supported by a column 146 erected from the body frame 101 and other frame bodies, and the front-rear frame body 142 includes a discharge clutch as a work clutch. A discharge clutch lever 147 for turning on and off 120 is supported so as to be swingable around a horizontal axis P3 provided at a position close to the position of the horizontal axis P2.

As shown in FIGS. 16, 18, and 19, the rotating operation body 149 is supported on a support plate 148 fixed to the machine body at a position close to the switching rocking body 135 so as to be swingable around the horizontal axis P 4. Yes. The rotating operation body 149 is configured by a substantially triangular plate body, and a substantially middle portion of one side of the triangle of the rotating operation body 149 is pivotally supported by the support plate 148. The support plate 148 is provided with a regulating member 150 that abuts on the rotating operation body 149 to regulate the swing limit.

The corner portion 149b facing the rotation fulcrum 149a of the rotation operation body 149 and the swing direction one end side portion 135a of the switching rocking body 135 are connected via a spring 151, and the rotation fulcrum 149a of the rotation operation body 149 is connected. One corner portion 149 c of one side located and the other end portion 135 b in the swing direction of the switching swing body 135 are connected via the first operation wire 152.

Then, one end of the balance swing arm 143 is connected to the other corner 149d of one side where the rotation fulcrum 149a of the rotation operation body 149 is located via the second operation wire 153, and the balance swing is performed. The other end of the arm 143 is connected to a position near one corner 149 c of one side where the rotation fulcrum 149 a of the rotation operation body 149 is located via a third operation wire 154.

Accordingly, the spring 151, the three

operation wires

152, 153, and 154, the rotation operation body 149, and the like constitute a linkage mechanism R that links and links the switching operation lever 141 and the fan rotation switching mechanism 123.

The fan rotation switching mechanism 123 having such a configuration swings the switching operation lever 141 in the counterclockwise direction (counterclockwise direction) in FIG. 19 by the tension biasing force of the coil spring 145 when the switching operation lever 141 is not operated. Therefore, the second operation wire 153 is pulled, and the switching rocking body 135 is rocked and biased clockwise in FIG. 19 (clockwise direction). When the switching rocking body 135 comes into contact with the regulating member 150 and further rocking is restricted, the switching rocking body 135 is held at that position (forward rotation position) (see FIG. 19). In this state, the switching rocking body 135 is in the cooling position, and the fan 122 is in the forward rotation state. At this time, the switching operation lever 141 is in an upright posture standing upward.

When the switching operation lever 141 is manually operated and swung clockwise in FIG. 18, the third operation wire 154 is pulled, and the switching rocking body 135 is swung counterclockwise in FIG. When the switching rocking body 135 comes into contact with the regulating member 150 and further rocking is restricted, the operation stops at that position (reverse rotation position) (see FIG. 18). In this state, the switching rocking body 135 is in the dust removal position, and the fan 122 is in the reverse rotation state. At this time, the switching operation lever 141 is in a lying posture that falls toward the front side of the aircraft. When the operator releases his / her hand from the switching operation lever 141 in the lying posture, the switching operation lever 141 automatically returns to the standing posture (forward rotation position) by the biasing force of the coil spring 145.

Accordingly, the switching operation lever 141 is provided so as to be freely switchable between the standing posture and the lying posture. When the switching operation lever 141 is switched to the standing posture, the fan rotation switching mechanism 123 is switched to the normal flow state, and the switching operation is performed. When the lever 141 is switched to the lying posture, the fan rotation switching mechanism 123 is configured to switch to the reverse flow state.

As shown in FIG. 20, in the middle of the movement operation path of the switch operation lever 141, a check member that can be switched between a check production state for checking the switch operation of the switch operation lever 141 and a non-operation state for allowing the switch operation. 155 is provided. The check member 155 can change its posture between a check production state that restricts contact of the switching operation lever 141 and a non-operation state that allows movement operation of the switching operation lever 141, and the position can be changed by tightening the knob bolt 156 in each state. Can be held.

The check member 155 enters the forward / backward swing operation region of the switching operation lever 141 in the check production state, and checks that the switching operation lever 141 switches to the lying posture due to the contact restriction. Further, in the non-operating state, the switching operation lever 141 is allowed to deviate from the forward / backward swing operation region and the switching operation lever 141 is switched to the lying posture.

As described above, since the operation state of the fan rotation switching mechanism 123 is switched manually, the operator can select an appropriate timing according to the clogging state of the dust screen 124 as the harvesting operation is performed. Thus, the fan rotation switching mechanism 123 can be switched to the reverse flow state.

And it is configured to notify the notification means that the timing is suitable for switching the fan rotation switching mechanism 123 to the reverse flow state. For example, if it is necessary to switch to the dust removal state based on the detection information of the coolant temperature of the engine 108, this is displayed on the display panel 157 as a notification means provided in the operation unit 107. . At that time, you may make it alert | report by sounding a buzzer.

[Transmission structure]
Next, the transmission structure will be described.
As shown in FIG. 21, the power of the engine 108 is transmitted to a main transmission 161 comprising a hydrostatic continuously variable transmission via a belt transmission mechanism 159 provided with a first transmission belt 158, and the main transmission After being shifted at 161, it is transmitted to a mission case 162 provided on the front side of the engine 108. The transmission case 162 is provided with a transmission mechanism such as a gear-meshing type auxiliary transmission 163 and a turning operation mechanism (not shown). The power transmitted to the transmission case 162 is transmitted to the left and right via the transmission mechanism inside the transmission case 162. Is transmitted to the traveling device 102.

Further, the power of the engine 108 is transmitted to the rotary shaft 167 of the hot potato 166 through a belt tension type threshing clutch 165 provided with the second transmission belt 164 in an intermittent manner. In addition, each part of the threshing device 104, that is, the first recovery screw 116, the second recovery screw 118, and the oscillating drive mechanism for sorting, are connected from the left end portion of the rotary shaft 167 to the third transmission belt 168. Power is transmitted to 169 and the like.

On the other hand, power is supplied from the left end portion of the rotary shaft 167 to the handling cylinder 115 of the threshing device 104 via the fourth transmission belt 170 as an input endless rotating body, the relay transmission shaft 171 facing left and right, and the bevel gear transmission mechanism 172. Communicated. Power is transmitted from the relay transmission shaft 171 to the cutting input shaft 175 via a belt tension type cutting clutch 174 provided with a fifth transmission belt 173 as an endless rotating body for output. Power is transmitted to each part of the transport unit 103.

A right and left reverse rotation shaft 176 is provided on the right side of the bevel gear transmission mechanism 172, and the reverse rotation transmission mechanism 177 capable of transmitting and receiving the reverse rotation power from the reverse rotation shaft 176 to the cutting input shaft 175. Is provided. Although not described in detail, the reaping clutch 174 is set in the transmission cut-off state, and the reverse rotation transmission mechanism 177 is temporarily switched from the transmission cut-off state to the transmission entering state, so that the cereals are fed in the cutting conveyance unit 103. When clogging occurs due to being bitten, the clogged cereal can be removed.

The mowing input shaft 175 is configured to also serve as a drive-side rotating shaft of the feeder 113, and the right lateral side of the feeding start end portion of the feeder 113 through the chain transmission mechanism 178 from the mowing input shaft 175. Power is transmitted to the lateral relay shaft 179 provided in the. Further, power is transmitted from the relay shaft 179 to the lateral feed auger 112 and the rotary reel 110, and the rotational power is transmitted to the reaping device 111 via a power conversion mechanism 180 that converts the reciprocating power in the left-right direction. The power of the engine 108 is transmitted to the grain discharging device 106 through a belt tension type discharging clutch 120 provided with a sixth transmission belt 181.

[Operation section]
As shown in FIG. 15, the driving unit 107 is provided with a front panel 182 in front of the driving seat 107 A, and the front panel 182 is capable of swinging in a cross manner for performing steering operation and raising / lowering operation of the cutting and conveying unit 103. An operation lever 183 and a display panel 157 for displaying various information are provided.

A side panel 140 is provided on the side of the driver's seat 107A. On this side panel 140, a threshing clutch lever 184 for turning on and off the threshing clutch 165, a cutting clutch lever 185 for turning on and off the cutting clutch 174, a main transmission lever 186 for operating the main transmission 161, and an auxiliary transmission 163 are operated. An auxiliary transmission lever 187, an accelerator lever 188, and the like are provided. Further, on the rear side of the side panel 140, a discharge clutch lever 189 for switching the grain discharging device 106 to a grain discharging state, the above-described switching operation lever 141 for switching the fan rotation direction, and the like are provided.

A support structure of the side panel 140 will be described.
As shown in FIGS. 26, 27, and 30, a support frame 190 for supporting the side panel 140 is provided. The support frame 190 includes an upper flat surface portion 190a that forms an upper panel surface, and

vertical surface portions

190b and 190c are integrally formed on both the left and right sides of the upper flat surface portion 190a in series.

As shown in FIG. 26 and FIG. 27, the support frame 190 is erected from the machine body frame 101 at the position where the most reaction force is generated, that is, the position corresponding to the swing fulcrum position of the main transmission lever 186. It is supported by a panel support frame 191. The rear side portion of the support frame 190 is supported by another vertical frame (not shown) standing from the machine body frame 101.

As shown in FIGS. 26, 27, and 28, the panel support frame 191 is erected from the body frame 101 at the front and rear intermediate portions of the engine 108 and the transmission case 162. And, it is connected to the lower longitudinally extending portion 191A that is erected from the airframe frame 101 and extends upward, and the lower longitudinally extending portion 191A and is connected to the front of the aircraft along the upper side of the transmission case 162. A longitudinally extending portion 191B extending toward the front and a longitudinally extending portion 191C on the upper side connected to the front portion of the longitudinally extending portion 191B and extending upward. .

In other words, in plan view, the transmission case 162 is provided on the lower side of the front portion of the side panel 140, so that the frame stands upright and extends upward at that portion. When installed, it is necessary to connect to the outer surface of the mission case 162. When the frame is supported on the transmission case 162 in this way, there is a disadvantage that vibrations generated depending on the driving state are transmitted to the side panel 140.

Therefore, the longitudinally extending portion 191C on the upper side extending from the fuselage frame 101 at the front and rear intermediate portion between the engine 108 and the mission case 162, extending forward along the upper side of the mission case 162, and extending upward therefrom. The side panel 140 is supported.

Describing a specific configuration, as shown in FIG. 28, the vertically extending portion 191A on the lower side is formed in a channel shape in a state of opening rearward in a plan view. Then, a first connection member 192 having a substantially L shape in front view is connected to the upper end portion of the vertically extending portion 191A on the lower side, and a substantially reverse L in front view is provided on the outer side of the vertical surface portion 192a of the first connection member 192. The vertical surface portions 193a of the letter-shaped second connecting member 193 are integrally connected. Further, a plurality of reinforcing ribs 192c are provided between the vertical surface portion 192a and the horizontal surface portion 192b of the first connecting member 192, and a plurality of reinforcements are also provided between the vertical surface portion 193a and the horizontal surface portion 193b of the second connecting member 193. Ribs 193c are provided.

In this manner, the first connecting member 192 and the second connecting member 193 form the front-and-back extending portion 191B, and the upper side formed in a rectangular tube shape on the upper side of the horizontal surface portion 193b of the second connecting member 193. The vertically extending portion 191C is fixed and extends upward.

The first connecting member 192 and the second connecting member 193 are formed with notched

concave portions

192d and 193d in the

vertical surface portions

192a and 193a, respectively, and are long in the front-rear direction penetrating in the left-right direction in a state where they are integrally connected. A long hole is formed. In addition,

bolt mounting holes

192e and 193e are formed on both front and rear sides of the notch recesses 192d and 193d.

The notch recesses 192d and 193d and the

bolt mounting holes

192e and 193e are provided so that the rotating boss portion 196 that supports the rotating shaft 195 of the brake pedal 194 provided in the operating portion 107 can be attached to the front and rear to be adjustable. belongs to. That is, as shown in FIG. 28, the rotating boss portion 196 extends to the laterally outward side of the longitudinally extending portion 191B in a state where the elongated hole is inserted, and the flange portion 197 is integrally formed at the laterally outward side portion. ing. The flange portion 197 is connected by a bolt 198 attached to the

bolt attachment holes

192e and 193e. The bolt insertion hole 199 formed in the flange portion 197 is formed as a long hole extending in the front-rear direction, and the front-rear position of the flange portion 197 is changed. The position can be adjusted within the range of the long hole.

As shown in FIG. 27, the rotation shaft 195 of the brake pedal 194 is provided on the right rotation boss 201 provided at the lower part of the left end in the operation unit step 200 and the panel support frame 191 as described above. The left-hand turning boss 196 is rotatably supported. The frame body 202 on the operation unit 107 side on which the right rotating boss portion 201 is supported and the panel support frame 191 on which the left rotating boss portion 196 is supported are erected and fixed separately from the body frame 101. As a result, individual differences may occur in assembly accuracy during the manufacturing process. As a result, there is a possibility that the rotating shaft 195 cannot be assembled properly by the rotating

boss portions

196, 201 on both the left and right sides due to such a dimensional error. However, as described above, the rotating shaft 195 rotates on the panel support frame 191. By adopting a configuration in which the boss portion 196 is attached so as to be adjustable in the front-rear direction, manufacturing errors during assembly can be absorbed.

As shown in FIG. 27, the base end 194a of the brake pedal 194 and a brake actuating unit (not shown) are interlocked and linked between the right rotating boss 201 and the left rotating boss 196 of the rotating shaft 195. A link mechanism 203 as a linkage mechanism is connected. In this manner, the member that is applied with the driving reaction force is connected at the portion sandwiched between the right rotating boss portion 201 and the left rotating boss portion 196, so that the deformation of the rotating shaft 195 is small. It can be pivotally supported. As shown in FIG. 27, the base end portion 194 a of the brake pedal 194 is connected to a location on the operating portion side of the rotating shaft 195.

As described above, the vertically extending portion 191A on the lower side is connected to the lower portion of the first connecting member 192 in the extending portion 191B in the front-rear direction, and the vertically extending portion 191C on the upper side is the extending portion in the front-rear direction. It is connected to the upper part of the second connecting member 193 in 191B. Since the first connecting member 192 and the second connecting member 193 are arranged in the left-right direction, the vertically extending portion 191C on the upper side extends laterally with respect to the vertically extending portion 191A on the lower side. It will be displaced.

Therefore, as shown in FIG. 27, the panel support frame 191 is formed in a substantially crank shape in which the upper side portion is biased laterally with respect to the lower side portion when viewed from the front of the machine body. Further, an oblique reinforcing rib 204 is formed between the longitudinally extending portion 191B and the vertically extending portion 191A on the lower side, and the longitudinally extending portion 191B and the vertically extending portion 191C on the upper side are formed. An oblique reinforcing rib 205 is formed therebetween.

As shown in FIGS. 26 and 27, a tension for applying tension to the first transmission belt 158 that transmits power from the engine 108 to the transmission case 162 is provided at an intermediate position between the vertically extending portion 191 A on the lower side. A mechanism 206 is fixedly supported.

The tension mechanism 206 includes a lateral shaft portion 207 that penetrates the vertically extending portion 191A on the lower side of the channel shape in a plan view in the left-right direction and extends integrally laterally outward, and the lateral shaft portion 207. An operation arm 208 that is rotatably supported at the distal end and extends toward the rear side, and a tension ring body 209 that is rotatably supported at the rear end of the operation arm 208 are provided. Further, the coil spring 211 is supported by a rod body 210 that is pivotally supported by the machine body frame 101 and extends vertically, and the tension ring body 209 is elastically biased downward. In this way, the tension ring body 209 is always configured to apply tension to the first transmission belt 158.

As shown in FIGS. 26, 27, and 30, a rectangular tube-like shape that extends from the front end portion to the rear end portion of the side panel 140 is positioned below the vertical surface portion on the left side of the support frame 190 in the side panel 140. A front-rear reinforcing frame body 212 and a vertical reinforcing frame body 213 that is fixedly extended upward from a position closer to the rear than the front-rear intermediate portion of the front-rear reinforcing frame body 212 are provided.

As shown in FIG. 27, the front-rear reinforcing frame body 212 is connected and fixed via a bracket 214 having a channel shape in a front view fixed to the panel support frame 191. The rear side portion of the front-rear reinforcing frame body 212 is connected and fixed to another vertical frame (not shown). The longitudinal reinforcement frame body 213 having a channel-shaped cross-section is connected and fixed in a state of extending upward integrally from a position closer to the rear side than the front and rear intermediate portion of the front and rear reinforcement frame body 212. Yes.

As shown in FIG. 30, the lower end portion of the vertical reinforcing frame body 213 is connected and fixed to the front and rear reinforcing frame body 212, and the upper end portion is a shaft support described later with respect to the vertical surface portion 190 b of the support frame 190. Bolts are fixed in a state where the support bracket 215 is sandwiched and fastened together.

The side panel 140 is provided with a lever guide 217 in which a guide hole 216 through which the threshing clutch lever 184 and the cutting clutch lever 185 are inserted is formed while covering the upper flat portion 190a of the support frame 190 from above. The lever guide 217 is formed of a synthetic resin material, and as shown in FIG. 27, the lever guide 217 has a laterally oriented guide portion 217A in which a guide hole 216 is formed and an outward portion of the guide portion 217A. The inner vertical surface portion 217B in the vertical posture, the horizontal mounting portion 217C that is connected to the outer side portion of the inner vertical surface portion 217B and is supported by the upper flat surface 190a of the support frame 190, and the mounting portion. The outer vertical surface portion 217D is connected to the outer side portion of the 217C in a downward direction and is positioned laterally outward from the vertical surface portion 190c of the support frame 190.

By forming the lever guide 217 in this way, the entire upper surface of the side panel 140 and the corners of the left and right ends can be covered smoothly, and the driver sitting on the driver's seat 107A There is little possibility of feeling uncomfortable even if touched.

Next, a support structure for the threshing clutch lever 184 and the mowing clutch lever 185 will be described.
As shown in FIG. 30, a threshing rotation support shaft 218 that supports the threshing clutch lever 184 in a swingable manner, and a cylindrical reaping rotation support shaft 219 that supports the reaping clutch lever 185 in a swinging manner. In the state of being fitted and mounted so as to be relatively rotatable around the same axis, and extending from the inner side to the outer side of the operating unit 107 along the lateral direction of the machine body.

The support frame 190 is provided with the relay vertical surface portion 190d integrally connected to the lower surface of the upper flat surface portion 190a at a position closer to the right side than the middle position between the left and right

vertical surface portions

190b and 190c. The right pivot support boss 220 is integrally formed with the relay vertical surface 190d. Further, a left side pivot boss 221 is integrally provided on a support bracket 215 that is bolted to a feeder side (left side) vertical surface portion 190b of the support frame 190. Further, the threshing rotation support shaft 218 and the mowing rotation support shaft 219 are rotatably supported by the left and right pivot

support boss portions

220 and 221.

Therefore, the threshing rotation support shaft 218 and the mowing rotation support shaft 219 are supported in a state of protruding outward from the vertical surface portion 190b on the feeder side. The support bracket 215 is bolted in a state of being sandwiched between the feeder-side vertical surface portion 190 b and the vertical reinforcing frame body 213 in the support frame 190.

As shown in FIG. 30, an inner extension shaft portion 218 a that protrudes inward from the inner side end portion of the cutting pivot shaft 219 toward the inner side end portion of the threshing rotation shaft 218. The base end side boss portion 222 of the threshing clutch lever 184 is externally fitted and attached to the inner extension shaft portion 218a so as to rotate integrally. One end side of the base end side boss part 222 is in contact with the left pivotal support boss part 221, and the other end side of the base end side boss part 222 is positioned and prevented from being detached by the pin 223. ing.

An outer extension shaft portion 218b is formed on the outer side end portion of the threshing rotation support shaft 218 so as to protrude outward from the outer side end portion of the mowing rotation support shaft 219. An interlocking operation member 224 for the threshing clutch 165 is connected to the portion 218b.

As shown in FIG. 29, the interlocking operation member 224 for the threshing clutch 165 is made of a rectangular plate and is integrally connected to the outer extension shaft portion 218b. A relay operation member 226 is pivotally connected to the swinging end portion of the interlocking operation member 224 for the threshing clutch 165 via a lateral connection shaft portion 225. The relay operating member 226 is linked to the threshing clutch 165 via a connecting rod 227 and a spring 228.

A cutting clutch lever 185 is connected to an inner side portion of the cutting pivot shaft 219, and an interlocking operation member 229 for the cutting clutch is connected to an outer side portion of the cutting pivot shaft 219. That is, the cutting clutch lever 185 is integrally connected to the outer peripheral portion of the cutting pivot shaft 219 at a position slightly away from the threshing clutch lever 184 outward.

Further, as shown in FIGS. 29 and 30, the swing arm 230 is integrally connected to the outer peripheral portion at a position near the outer end of the cutting pivot 219 for cutting, and the swing arm 230 One end portion of an interlocking operation member 229 having an outer shape that is curved in a bow shape in a side view is pivotally connected to the swing end portion. The other end of the interlocking operation member 229 is interlocked with the mowing clutch 174 via the operation wire 231 and the spring 232. A recess portion Q for bypassing the cutting pivot shaft 219 when viewed in the axial direction of the cutting pivot shaft 219 is formed by a concave portion of the interlocking operation member 229 having an arcuate outer shape. .
In FIG. 29, in order to facilitate understanding of the structure, the interlocking operation member 224 for the threshing clutch 165 and the interlocking operation member 229 for the reaping clutch are illustrated in a shifted state.

The mowing clutch 174 will be described.
As shown in FIGS. 22 to 25, an input pulley section 235a as an input rotating body to which the power of the engine 108 is input via the fourth transmission belt 170, and the input power is input via the fifth transmission belt 173. An output pulley portion 235b serving as a cutting output rotating body that transmits to the cutting and conveying section 103 is integrally formed with a transmission pulley 235 serving as one transmission rotating body, and the transmission pulley 235 is integrated with the relay transmission shaft 171. It is attached so that it can rotate freely. The output pulley portion 235b is provided closer to the shaft end side of the relay transmission shaft 171 than the input pulley portion 235a.

A recessed portion 236 that is recessed along the axial direction is formed on one side of the transmission pulley 235 in the axial direction. The relay transmission shaft 171 is rotatably mounted inside the cylindrical case 237, and the transmission pulley 235 is attached to the end of the relay transmission shaft 171 that protrudes outward from the cylindrical case 237 so as to be integrally rotatable. ing. That is, as shown in FIG. 25, the input pulley portion 235a of the transmission pulley 235 is a wide multiple belt wound around a plurality of (specifically, two) fourth transmission belts 170 arranged side by side. The concave portion 236 is formed in a state of being configured as a winding portion and located inside the multiple belt winding portion. The cylindrical case 237 in which the relay transmission shaft 171 is housed is provided so as to enter the recessed portion 236.

The output pulley portion 235b located on the shaft end side of the input pulley portion 235a of the transmission pulley 235 is formed with a smaller diameter than the input pulley portion 235a. On the other hand, the cutting input pulley 238 that is mounted on the cutting input shaft 175 and is wound with the fifth transmission belt 173 between the input pulley 235a is formed to have a larger diameter than the input pulley 235a. Accordingly, the fifth transmission belt 173 transmits power in a form in which the power to the cutting and conveying unit 103 is decelerated rather than the power to be supplied to the handling cylinder 115.

A boss portion 235c that is externally fitted to the relay transmission shaft 171 is formed on the radially inner side of the output pulley portion 235b, and a step formed on the relay transmission shaft 171 is formed on the shaft end side of the boss portion 235c. A small-diameter cylindrical portion 235d that is engaged with the portion and is externally fitted to the small-diameter shaft portion 171a is formed. Further, the boss portion 235c and the relay transmission shaft 171 are interlocked and connected by a key 239 so as to be integrally rotatable.

As shown in FIGS. 24 and 25 (a), the transmission entering state for applying tension to the fifth transmission belt 173 and the application of tension at the end of the relay transmission shaft 171 at the end of the shaft end of the relay transmission shaft 171. There is provided a tension clutch mechanism 240 that can be switched to a transmission cut-off state for releasing the.

The tension clutch mechanism 240 includes a tension arm 242 that is rotatably fitted and supported on the relay transmission shaft 171 via a bearing 241, and a tension ring body 243 that is supported by the tension arm 242 and acts on the fifth transmission belt 173. And a coil spring 244 as an urging mechanism for urging the tension arm 242 in a direction in which the tension ring body 243 moves away from the fifth transmission belt 173, and an operation of a cutting clutch lever 185 provided in the operating unit 107. And an operation wire 245 as a linkage operation mechanism for rotating the tension arm 242 so that the tension ring 243 acts on the fifth transmission belt 173 against the urging force of the coil spring 244 to apply tension. ing.

As shown in FIG. 25 (b), circlips 246 are mounted at two locations apart from each other in the axial direction on the outer peripheral portion of the bearing 241, and the rotation base end portion of the tension arm 242 has a pair of circlips. It is fitted on the outer periphery of the bearing 241 in a state where it is sandwiched by the clip 246 and prevented from coming off in the axial direction. A nut 247 is attached to a screw portion 171b formed at the shaft end of the relay transmission shaft 171, and the small diameter cylindrical portion 235d of the transmission pulley 235 and the inner ring of the bearing 241 are fastened and fixed by the nut 247.

The coil spring 244 is stretched over an extension arm 242a that is fixedly extended from the tension arm 242 and a spring receiving portion 249 that is extended from a locking member 248 that is formed on the side portion of the threshing device 104. The locking member 248 is for holding an openable / closable lid (not shown) that covers the lateral side of the threshing device 104.

When the cutting clutch lever 185 is operated to the disengaged position, the operation wire 245 is loosened, and the tension ring body 243 is separated from the fifth transmission belt 173 by the urging force of the coil spring 244 to switch to the transmission cut-off state (clutch disengaged state). . When the harvesting clutch lever 185 is operated to the on position, the tension arm 242 is pulled by the operation wire 245 against the biasing force of the coil spring 244, and the tension ring body 243 acts on the fifth transmission belt 173 to exert tension force. To switch to the transmission state (clutch engaged state).
Accordingly, the fifth transmission belt 173 and the tension clutch mechanism 240 constitute a cutting clutch 174.

As described above, the relay transmission shaft 171 that faces the fuselage is connected to the front and rear cylinder shaft 115a via the bevel gear transmission mechanism 172, and the power input to the relay transmission shaft 171 receives the cutting clutch. The power transmitted to the cutting and conveying unit 103 via 174 and the power transmitted to the handling cylinder 115 of the threshing device 104 are distributed.

Next, a description will be given of a shifting operation structure for traveling.
As shown in FIGS. 27, 31, and 32, a front-view channel-shaped support bracket 250 is connected to the lateral side portion of the vertically extending portion 191 C on the upper side of the panel support frame 191, and the operation is started from the support bracket 250. The fulcrum pin 251 is fixed in a state of projecting sideways toward the seat 107A. A rotation operation member 252 linked to the proximal end side of the main transmission lever 186 is supported by the fulcrum pin 251 so as to be rotatable and held at an arbitrary rotation position by the friction holding mechanism 253.

The rotation operation member 252 is formed of a series of plate bodies, and a central support portion 252a formed in a channel shape in plan view with the friction holding mechanism 253 positioned inside the front and rear intermediate positions, and the center The operation connection part 252b located in the front and back both sides of the support part 252a is provided. The lower end portion of the main transmission lever 186 is supported inside the center support portion 252a so as to be swingable about the longitudinal axis X and oscillated and biased toward the left and right center by the return spring 254. Further, the rotation operation member 252 is integrally swung around the lateral axis P5 of the fulcrum pin 251 by operation of the main transmission lever 186 in the front-rear direction.

As shown in FIG. 31, the upper end portion of the main speed change operation rod 255 is pivotally connected to the left side surface of the front side end portion of the front side operation connecting portion 252 b via a ball joint 256. The lower end portion of the main transmission operation rod 255 is linked to the transmission operation arm 257 of the main transmission 161.

When the main transmission lever 186 is operated from the neutral position located at the front and rear center part to the front side, the transmission operation arm 257 linked with the main transmission operation rod 255 is operated, and the main transmission 161 is accelerated in the forward direction. The When the main transmission lever 186 is operated from the neutral position to the rear side, the main transmission device 161 is operated to increase the speed in the reverse direction.

As shown in FIG. 32, a locking portion 258 is fixed in a direction perpendicular to the plate surface on the right side surface of the portion where the main speed change operation rod 255 of the operation connecting portion 252b on the front side is connected. By providing the locking portion 258 in this way, the upper end portion of the main speed change operation rod 255 can be attached only from the left side surface of the operation connecting portion 252b on the front side, and it is prevented from being erroneously attached from the right side surface. ing. This is because if it is attached from the right side surface, there is a possibility that the connection with the speed change operation arm 257 cannot be performed satisfactorily.

As shown in FIGS. 26 and 27, a pivot arm 259 that is pivotable integrally with a pivot shaft 195 of the brake pedal 194 is connected to the pivot arm 259, and a lateral locking pin 260 is provided on the pivot arm 259. Yes. A pair of neutral return operation links 261 that link the brake pedal 194 and the main speed change lever 186 are provided. The lower end portion of each operation link 261 is engaged and linked to the locking pin 260 through a long hole 262 that is long in the vertical direction, and the upper end portion is pivotally connected to the operation connection portion 252b on the front side and the rear side, respectively. .

When the brake pedal 194 is not depressed, the pair of operation links 261 can freely slide within the range of the long hole 262, and the speed change operation by the main speed change lever 186 is allowed. When the brake pedal 194 is depressed, even if the main speed change lever 186 is operated in either the forward operation region or the reverse operation region and is held in position by the friction holding mechanism 253, any neutral return lever 186 is used. With the operation link 261, the rotation operation member 252 can be forcibly returned to the neutral position and the main transmission 161 can be switched to the neutral state.

As described above, various linkage operation mechanisms are provided on the lower side of the side panel 140, and left and right side portions on the lower side of the side panel 140 are not exposed to the outside. Is provided with a shielding plate. That is, as shown in FIG. 27, the right side shielding plate 263 that covers the entire side surface is provided on the side surface on the driver seat 107A side, and the upper side is the support frame 190 on the side surface opposite to the driver seat 107A. The left shielding plate 264 is connected to the vertical surface portion 190b and the lower portion is connected to the front-rear reinforcing frame body 212.

[Another embodiment of the second embodiment]
(1) In the above embodiment, the cutting output rotating body 235b and the input rotating body 235a are integrally formed by one transmission rotating body 235, but the cutting output rotating body 235b and the input rotating body 235a are shown. And may be constituted by separate rotating bodies.

(2) In the above embodiment, the transmission rotating body 235 is formed with the recessed portion 236 that is recessed along the axial direction, and the cylindrical case 237 that houses the relay transmission shaft 171 is provided in a state of entering the recessed portion 236. Although the configuration is adopted, instead of such a configuration, the transmission rotating body 235 is positioned on the outer side in the axial direction from the end portion of the cylindrical case 237 so as not to overlap with the cylindrical case 237 in the radial direction. It is good also as a structure with which it is equipped.

(3) In the above embodiment, the input rotator 235a is provided with a wide multiple belt winding portion wound in a state where two transmission belts are lined up. However, as the input rotator, One transmission belt may be wound.

(4) In the above-described embodiment, the relay transmission shaft 171 facing the fuselage and the handling shaft 115a facing the front of the fuselage are interlocked and connected via the bevel gear transmission mechanism 172. You may comprise as follows.
In addition to the relay transmission shaft 171, there is a transmission shaft for the barrel that faces the fuselage, and power is transmitted from the relay transmission shaft 171 to the transmission shaft for the barrel via a belt transmission mechanism. It is good also as a structure by which the shaft and the cylinder shaft facing the front of the machine body are interlocked and connected via a bevel gear mechanism.

(5) In the above-described embodiment, the tension clutch mechanism 240 is supported at the end of the relay transmission shaft 171. However, the lower cutting side of the transmission transmits power by the endless rotating body 173 for output. The tension clutch mechanism may be supported on the rotation shaft on the side.

(6) In the above-described embodiment, the canopy 107B that covers the upper portion of the operation unit 107 is provided. However, instead of the canopy 107B, a configuration that includes a cabin that is formed in a substantially box shape and covers the entire operation unit 107 may be used. . And in the structure provided with such a cabin, it is good also as a structure which provides the pre cleaner 126 in the position lower than the ceiling part of a cabin.

(7) In the above embodiment, the combine is applied to an ordinary combine as a combine. However, the present invention according to this embodiment can also be applied to a self-decomposing combine.

INDUSTRIAL APPLICABILITY The present invention can be applied to a threshing apparatus for a full throwing type combine harvester having an opening that allows the handling cylinder and the receiving net to face laterally outward of the machine body, and an openable / closable side wall that closes the opening so as to be opened and closed. it can.

[First Embodiment]
DESCRIPTION OF SYMBOLS 14 Threshing frame 14A Frame part 14Aa Rear edge part 14Ac Side wall side 14Ad Lower edge part 14d Lower side part 16 Side wall body 16A Mounting part for holding mechanism 17 Handling cylinder 18 Receiving net 24 Opening 26 Front and rear direction support shaft 44 Gas damper

44A Piston rod

44B Cylinder tube 45 Inner wall plate 45B Frame-like surface portion 45Ba Lower side surface portion 46 Outer wall plate 46A Lower end portion 47 Front wall plate 48 Rear wall plate 49 Upper connecting member 50 Lower connecting member 50A Outer surface 51 Top plate 55 Seal member 56 Auxiliary Member 56a Side surface 57 Guide portion

57A Guide surface

57B Front surface

57C Rear surface

57D Bottom surface 58 Closed space 63 Connection shaft 64 Oscillating member 65 Connection shaft 66 Lock mechanism 67 Engagement tool 68 Engagement tool 73 First member 74 Second member B Holding mechanism C Lowering prevention mechanism D Position adjusting mechanism Da Long hole Db Long hole Dc Connecting part Dd Protrusion

[Second Embodiment]
103 Cutting part 107 Driving part 108 Engine 115 Handling cylinder 115a Handling cylinder axis 170 Endless rotating body for input 171 Relay transmission shaft 172 Bevel gear mechanism 173 Endless rotating body for output 185 Clutch lever 235 Transmission rotating body 235a Input rotating body 235b Cutting output Rotating body 236 Concave portion 237 Cylindrical case 240 Tension clutch mechanism 242 Tension arm 243 Tension ring body 244 Energizing mechanism 245 Linking operation mechanism

Claims

A threshing frame that supports the handling cylinder and the receiving net, and an openable / closable side wall that closes an opening that allows the handling cylinder and the receiving net to face laterally outward of the machine body,
The threshing frame includes a frame portion that forms the opening,
The side wall body swings up and down over a lower closed position for closing the opening and an upper opening position for opening the opening, with a support shaft facing in the front-rear direction as a fulcrum,
A holding mechanism that enables the side wall body to be held at the open position;
A threshing device for a full-throw-in type combine harvester in which the holding mechanism is arranged at a rear edge portion of the frame portion.
The side wall body includes an inner wall plate adjacent to the receiving net at the closed position, an outer wall plate positioned at a lateral lateral outer side of the inner wall plate, a front end portion of the inner wall plate, and a front end of the outer wall plate. A front wall plate extending over a portion, a rear wall plate extending over a rear end portion of the inner wall plate and a rear end portion of the outer wall plate, and forming a rectangular cross section at the closed position,
The threshing device for a full-pile throw-in combine according to claim 1, wherein the side wall body includes a mounting portion for a holding mechanism on the rear wall plate.
The side wall body includes an upper connecting member that connects the front wall plate and the rear wall plate across the front wall plate and the rear wall plate at the upper end portion of the side wall body, and the front end portion at the lower end portion of the side wall body. The threshing apparatus for a full throwing type combine combiner according to claim 2, further comprising a lower connecting member that connects the front wall plate and the rear wall plate across the wall plate and the rear wall plate.
The threshing device for a full throwing type combine according to claim 3, wherein the upper connecting member is connected to an upper end portion of the threshing frame via the support shaft.
The side wall body includes a top plate that spans the front wall plate and the rear wall plate, and spans the outer wall plate and the upper connecting member,
The threshing device for a full-pile throw-in combine according to claim 3 or 4, wherein the top plate is connected to the front wall plate, the rear wall plate, the outer wall plate, and the upper connection member.
The lower connecting member includes an outer surface facing the lower end of the outer wall plate,
The lower connecting member is disposed at an end of the front wall plate and the rear wall plate on the outer wall plate side, and the outer surface is in surface contact with the lower end portion of the outer wall plate. A threshing device for whole-pile-type combine harvesters according to any one of the preceding claims.
The sealing member according to any one of claims 2 to 6, further comprising a seal member that closely contacts a side surface of the frame portion on the side wall body side and a frame-like surface portion of the inner wall plate corresponding to the side surface at the closed position of the side wall body. A threshing device for the whole bowl input combine as described in the item.
The inner wall plate is provided with auxiliary members that extend at the lower end of the inner wall plate across the front and rear ends,
The threshing apparatus for a full-pile throw-in combine according to claim 7, wherein the auxiliary member includes a side surface forming a lower side surface portion corresponding to a lower side surface portion of the side surface of the frame-shaped surface portion.
The side wall includes a guide portion that enters below the receiving net in the closed position,
The guide portion includes a guide surface that extends from the inner wall plate in a state in which an amount of downward entry of the receiving net at the closed position increases toward the lower side, and the front surface extends from the guide surface to the inner wall plate. 9. A whole threshing combine combine threshing apparatus according to claim 2, wherein the threshing apparatus is a box-like structure.
The said guide part is comprised in the box shape which comprises the bottom face which extends the said front wall and the said rear surface from the said guide surface to the said inner wall board, and forms the obstruction | occlusion space between the said inner wall boards. Threshing device for all-in-one combine combine.
The holding mechanism includes a gas damper that extends along with the rising and swinging of the side wall body to the open position, and extends over the frame portion and the side wall body.
A connecting shaft that connects the piston rod of the gas damper to the frame portion or the side wall body, and a swinging member that swings using the connecting shaft as a fulcrum,
The swinging member is disposed between the frame portion and the gas damper, and has a length that enters between the cylinder tube of the gas damper and the connecting shaft as the side wall body reaches the open position. 11. The full-throw-in type combine threshing apparatus according to claim 1, wherein the threshing apparatus is configured to function as a descending prevention mechanism configured to prevent the sidewall body from descending from the open position.
A locking mechanism that enables the side wall body to be fixedly held in the closed position;
The lock mechanism according to any one of claims 1 to 11, wherein the lock mechanism includes an engaged tool provided at a lower edge portion of the frame portion and an engaging tool provided at a lower end portion of the side wall body. The whole threshing device of the whole bowl input type combine described.
13. The threshing apparatus for a full throwing type combine according to claim 12, wherein the frame portion includes a position adjusting mechanism that enables position adjustment of the engaged tool in a lateral direction of the machine body.
The frame portion includes a first member that is fixed to the lower edge portion, and a second member that supports the engaged tool,
Two elongated holes that are long in the lateral direction of the fuselage are formed in one of the first member and the second member, and the two elongated holes are formed in the other of the first member and the second member. A connecting portion that enables bolt connection between the first member and the second member using one of the long holes, and a protrusion that is movably inserted into the other long hole in the lateral direction of the machine body. The threshing apparatus for a full-pile throw-in combine according to claim 13, wherein the position adjusting mechanism is constituted by the two elongated holes, the connecting portion, and the protrusion.
It has a relay transmission shaft that transmits engine power,
An input rotator to which the power of the engine is input to the relay transmission shaft via an endless rotating body for input, and a cutting output rotation for transmitting the input power to the reaping portion via an endless rotating body for output With the body,
The combine in which the cutting output rotating body is provided on the outer end side of the relay transmission shaft with respect to the input rotating body.
The combine according to claim 15, wherein the harvesting output rotator and the input rotator are integrally formed by a single transmission rotator.
The relay transmission shaft is rotatably mounted inside the cylindrical case,
The transmission rotating body is attached to a shaft end portion protruding outward from the cylindrical case in the relay transmission shaft so as to be integrally rotatable,
A recessed portion that is recessed along the axial direction is formed in the transmission rotating body,
The combine of Claim 16 with which the outer end part of the said cylindrical case is provided in the state which penetrates into the said recessed part.
The transmission rotating body includes a wide multiple belt winding portion wound in a state in which a plurality of transmission belts are arranged, and the concave portion is positioned inside the multiple belt winding portion. The combine of Claim 17 in which the insertion part is formed.
It is possible to switch between a transmission entering state in which tension is applied to the output endless rotating body and a transmission cut-off state in which the application is released at the outer end side of the cutting output rotating body at the shaft end portion of the relay transmission shaft. The combine according to any one of claims 15 to 18, wherein a tension clutch mechanism is supported.
The tension clutch mechanism is
A tension arm that is rotatably fitted and supported on the relay transmission shaft;
The combine according to claim 19, further comprising a tension ring body supported by the tension arm and acting on the output endless rotating body.
An urging mechanism for urging and urging the tension arm in a direction away from the output endless rotating body;
Based on an operation of a clutch lever provided in the driving unit, the tension ring body acts on the endless rotating body for output against the urging force of the urging mechanism to apply a tension force. A linkage operation mechanism for rotating the arm,
The tension ring body is supported at a position below the relay transmission shaft of the tension arm,
The urging mechanism is connected to a position above the relay transmission shaft of the tension arm,
The combine according to claim 20, wherein the linkage operating mechanism is connected to a portion of the tension arm that is below the relay transmission shaft.
The combine according to any one of claims 15 to 21, wherein power input to the relay transmission shaft is divided into power transmitted to the cutting unit and power transmitted to the handling cylinder.