WO2014010422A1

WO2014010422A1 - Tracked running gear device and harvester

Info

Publication number: WO2014010422A1
Application number: PCT/JP2013/067519
Authority: WO
Inventors: 三井孝文; 中島伸六; 福岡義剛; 松下博昭; 仲島鉄弥; 古木大樹; 成田靖; 岡田幹夫; 吉田有作; 相田宙; 林茂幸; 有本敬; 森脇崇文; 一二三慶城; 寺園遥香; 大谷大樹
Original assignee: 株式会社クボタ
Priority date: 2012-07-10
Filing date: 2013-06-26
Publication date: 2014-01-16
Also published as: CN106105549B; CN112136512A; CN106105579A; CN112136513A; CN112136512B; CN107347383B; CN106105549A; CN104411155A; CN106105579B; CN107347383A; CN104411155B

Abstract

Provided is a tracked running gear device in which attachment structure of a track roller for a track frame is improved. The tracked running gear device is provided with a drive sprocket (21) disposed at the front of a track frame (20) supported by a chassis frame (3), a tracked running gear belt (26) looped around a tension sprocket (22) disposed at the rear of the track frame (20), and a plurality of track rollers (23) which guide the tracked running gear belt (26) with respect to the ground. An attachment member (6) disposed on the track frame (20) is provided with an attachment unit (60) which is detachably attached and extends in the longitudinal direction of the chassis. The attachment unit (60) provides bearing support for multiple units of the track rollers (23) which are lined up in the vehicle body longitudinal direction.

Description

Crawler traveling device and harvester

The present invention relates to a crawler traveling device and a harvester.

[1] A drive sprocket and tension sprocket are provided at the front and rear ends of the track frame extending in the longitudinal direction of the vehicle body, and a plurality of wheels are attached to the lower surface of the track frame between the drive sprocket and the tension sprocket. A known crawler travel device is known from US Pat. In this crawler traveling device, a thick mounting plate is fixed to the lower surface side of the track frame by welding or the like, and a support body bearing a support shaft for supporting the wheel is mounted on the lower surface of the mounting plate. It is fixed. This support body includes a boss portion that supports the support shaft and a flange portion having a T-shaped cross section that extends upward from the boss portion. The flange portion is provided with a through hole, and the mounting plate is provided with a female screw that is coaxial with the through hole. By aligning the upper surface of the flange portion with the lower surface of the mounting plate and bolting the flange portion to the mounting plate, the support body is detachably fixed to the mounting plate, that is, the track frame. This support body is manufactured as a cast article in which a boss portion and a flange portion that support one wheel are integrally cast, and one support body corresponds to one wheel. That is, since one support is individually provided for each wheel, when the number of wheels is large, the number of assembling steps increases and the manufacturing cost of the support increases. In addition, when removing all the wheels for maintenance or the like, the wheels are separated.

[2] As the harvesting machine as described above, for example, the harvesting machine described in Patent Document 2 is already known. The harvesting machine described in Patent Document 2 includes a dust suction fan (a suction dust exhaust fan in the literature) and a capturing member (a net body in the literature). The dust suction fan sucks dust in a feeder case (in the literature, feeder house) from a dust suction port and discharges it to the outside. The capture member is attached to the dust suction port and captures the cereals that flow toward the dust suction fan. Thereby, prevention of the suction | inhalation of the grain straw to a dust suction fan can be aimed at.

[3] Conventionally, a threshing device provided in the harvester as described above has been publicly known. For example, the threshing apparatus described in Patent Document 3 includes a front gren pan arranged at the upper front end of the sheave case, and extends rearward from the rear end of the front gren pan in a state of being aligned at a predetermined interval in the left-right direction. A plurality of sieve lines installed, an auxiliary grain pan arranged at the front upper part of the sheave case so as to be located below the front grain pan, and rearward from the rear end of the auxiliary grain pan in a state of being aligned at a predetermined interval in the left-right direction A plurality of auxiliary sieve wires extending toward the surface are provided. The sieve line and the auxiliary sieve line are used to screen the processed material and transfer the cut straw and the like backward while letting the single-grained grains, grain with branches and the like leak through.

[4] Conventionally, as such a technique, as shown in Patent Document 4, there is one in which an operation lever ("main transmission lever" in the literature) is arranged on the left side of the seat in the driving section. In the technique described in Patent Document 4, a first command input means (“cutting lift switch” in the literature) and a second command input means (“reel cross” in the literature) are provided on the rear surface of the grip portion of the operation lever. Switch ").

According to the technique described in Patent Document 4, the first command input means and the second command input means can be input with one finger (for example, thumb) of the left hand while holding the operation lever with the left hand. It is possible, and an operation command to a plurality of control objects can be performed with one hand.

JP 2003-276661 A JP 2003-174815 A JP 2007-20419 A JP 2007-244335 A

[1] Issues corresponding to the background art [1] are as follows.
In view of the above circumstances, there is a demand for a crawler traveling device having an improved support structure for the wheel for the track frame.

[2] Issues corresponding to the background art [2] are as follows.
In the above-mentioned conventional harvesting machine, the capturing member is constituted by a net-like member, that is, the capturing member includes a plurality of rod-shaped members arranged so as to cross each other over the dust suction port. The cereals are easily entangled with the capturing member. When a large amount of cereal tangled around the capturing member, the cereal entangled (stirwell) entangled with the capturing member becomes a resistance, making it difficult for the dust suction fan to suck the dust.

The present invention has been made in view of the above situation, and an object thereof is to provide a harvesting machine in which the trapped cereal is less likely to be entangled with the capturing member.

[3] Issues corresponding to the background art [3] are as follows.
However, in the threshing device described in Patent Document 3, the sieve line and the auxiliary sieve line are formed to be substantially flat in a side view (so as to extend substantially linearly in the horizontal direction), so that the processed product is directed rearward. There was room for improvement in terms of smooth transport.

The present invention has been made in view of the situation as described above, and an object thereof is to provide a harvester equipped with a threshing device capable of selecting a threshing processed product from a grain pan while smoothly conveying with a sieving line. To do.

[4] Issues corresponding to the background art [4] are as follows.
However, in the technique described in Patent Document 4, the first command input means and the second command input means of different input operation methods are arranged on the same surface, so that both means can be mistakenly operated. In addition, there is a possibility that complicated finger (for example, thumb) movement is required, and operation input cannot be performed as expected particularly when the operation levers are operated simultaneously.

In view of the above circumstances, an object of the present invention is to provide a harvesting machine with few misoperations and good operability for an operation lever provided with two command input means.

[1] The means for solving the problem [1] is as follows.
In order to solve the above-described problems, a crawler traveling device according to the present invention includes a track frame that extends in the longitudinal direction of the aircraft and is supported by the aircraft frame, a drive sprocket disposed at a front portion of the track frame, and a rear portion of the track frame. A tension sprocket disposed on the crawler belt, a crawler belt wound around the drive sprocket and the tension sprocket, and a plurality of wheels for guiding the crawler belt to the ground. A mounting unit that is detachably mounted and extends in the longitudinal direction of the machine body is provided, and the mounting unit supports the rolling wheels arranged in the longitudinal direction of the vehicle body in a plurality of units.

According to this configuration, since the plurality of rollers are supported by the mounting unit and, consequently, the mounting unit that is detachably fixed to the track frame, the plurality of rollers are integrated. In particular, the track frame can be removed or attached. Moreover, each wheel does not fall apart.

An attachment unit that handles a plurality of wheels as a unit is required to have a simple structure and to be easily attached to and detached from the track frame. In one preferred embodiment of the present invention, the mounting unit includes a groove-shaped member that extends in the longitudinal direction of the machine body and opens downward, and a boss member that is disposed at an interval in the longitudinal direction of the machine body. A bottom plate portion of the shape member is bolted to the mounting member, and a wheel shaft for mounting the wheel on the boss member is supported. Since the mounting unit is provided with a long channel member and a boss member that supports the wheel shaft in accordance with the arrangement pitch of the wheel on the opening side of the channel member, the mounting unit is formed using the bottom plate portion of the channel member. By simply bolting to the track frame, a plurality of unitized wheels are fixed to the track frame. Moreover, since it is bolt-fixed using the baseplate part of a groove-shaped member, a bolt fastening location will be located in the groove | channel of a groove-shaped member, and the penetration | invasion of muddy water and a foreign material from the outside can be suppressed.

The track frame often uses a relatively thin square pipe for weight reduction. Therefore, when the mounting unit is bolted to the track frame, it is preferable that the mounting member positioned between the track frame and the mounting unit is subjected to a bolt tightening force. In one preferred embodiment of the present invention, the mounting member is a reinforcing plate fixed to a frame body constituting the track frame, and a female screw (a hole in which a female screw is formed) is formed on the reinforcing plate for fixing the bolt. ) Is formed. Since the presence of the mounting member other than at the bolt fixing point causes weight increase, it is desirable that the mounting member be present only at the bolt fixing point. For this purpose, the mounting member may be configured as a plurality of mounting member pieces that are spaced apart from each other in the longitudinal direction of the body. By taking such a dimension that allows the mounting member to function as a reinforcing plate for the track frame, the need for an additional reinforcing plate for the track frame is reduced.

In one preferred specific configuration of the mounting unit, the channel-shaped member has a transverse section U formed of a bottom plate portion contacting the mounting member and a pair of left and right side plate portions extending from each side edge of the bottom plate portion. It is a character-like long member, and the boss member is joined across the pair of left and right side plates. In other words, as a groove-shaped member, a simple shape steel material well known as groove-shaped steel is used facing downward, and a simple structure that only joins a boss member to the edge of the side plate portion by welding or the like. By being adopted, it is advantageous in terms of manufacturing cost.

In order to prevent the boss member from getting in the way during the tightening operation of the fixing bolt for fixing the mounting unit to the track frame, in one of the preferred embodiments of the present invention, the bottom plate portion of the channel member has a longitudinal direction of the body. A mounting hole for fixing the bolt is formed with a gap therebetween, and the boss member is joined in the middle of the mounting hole in the front-rear direction.

In one preferred embodiment of the present invention relating to a tension sprocket mounting structure, a support rod extending in the longitudinal direction of the tension sprocket is supported by the track frame so as to be displaceable along the direction in which the track frame extends. The track frame is a cylinder, and the support rod has an outer cross section that coincides with or substantially coincides with the inner cross section of the cylinder, and the support rod is guided by the inner surface of the track frame and slides in the track frame. The length of the mounting member and the length of the bolt so that the tip of the bolt for bolting the bottom plate portion of the channel member to the mounting member does not enter the track frame and interfere with the support rod. Is set. The mechanism that moves the tension sprocket in the longitudinal direction of the airframe is composed of a support rod that slides inside the cylinder forming the track frame, so that additional guide members are reduced and the structure around the track frame is reduced. It will be neat.

With respect to the wheel, the crawler belt has a configuration in which the wheel shaft has protrusions protruding from both ends of the boss member, and a roller half body constituting the wheel is fixed to each protrusion. The crawler belt can be guided well by contacting the projections from the outside.

In a preferred embodiment of the present invention, the groove shape is configured such that a crawler guide extending in the front-rear direction of the machine body for guiding the lower side of the crawler belt is sandwiched between side plate portions of the groove member. It is bolted to the member. By adopting this configuration, it is possible to attach the mounting unit to the track frame in the form of stable both-end support as well as the crawler guide as well as the rolling wheels, which is advantageous in terms of quality and cost. Further, by adopting a configuration in which guide wheels for guiding the upper feeding belt side of the crawler belt are attached to the track frame via a bracket, the bracket can be easily extended straight upward from the track frame to the upper feeding belt side. This is advantageous in terms of quality and cost.

[2] Solution means corresponding to the problem [2] are as follows.
A feature of the present invention is that it has a feeder case in which a dust suction port is formed on the top plate, a feeder that conveys the harvested cereals in the feeder case, and the dust in the feeder case is sucked out from the dust suction port to the outside. And a trapping member that is attached to the dust suction port and catches the cereals that flow toward the dust suction fan, and the catching members are arranged so as not to cross each other across the dust suction port. And providing a plurality of bar-shaped members.

According to this characteristic configuration, in the capturing member, the plurality of rod-shaped members are arranged so as not to cross each other over the dust suction port. That is, in the capturing member, a gap between adjacent rod-shaped members among the plurality of rod-shaped members is formed over the entire length of the dust suction port. Therefore, entanglement of the cereals hardly occurs between the rod-shaped members adjacent to each other among the plurality of rod-shaped members, while capturing the cereal cake flowing toward the dust suction fan with the plurality of rod-shaped members.

Furthermore, in the present invention, it is preferable that the plurality of rod-like members are substantially parallel to the feeding direction of the feeder.

Usually, most of the grains in the feeder case are transported in a posture that intersects the feeder transport direction. According to this characteristic configuration, since the plurality of rod-shaped members are substantially parallel to the feeding direction of the feeder, that is, since the longitudinal direction of the corn flour and the direction of the plurality of rod-shaped members intersect, It is easy to act on the cereal and the cereal that flows toward the dust suction fan can be firmly captured.

Furthermore, in this invention, it is suitable that the said rod-shaped member is a round bar.

According to this characteristic configuration, since the rod-shaped member does not have a corner, the cereal is difficult to be entangled with the rod-shaped member, and the cereal is difficult to break with the rod-shaped member, so that the occurrence of cut straw sucked into the dust suction fan is reduced. be able to.

Furthermore, in the present invention, it is preferable that the dust-absorbing fan rotates about a left-right axis.

According to this characteristic configuration, since the dust suction fan and the dust suction port do not face each other in the axial direction of the dust suction fan, even if the cereal flows from the dust suction port toward the dust suction fan, the cereal is directly directed to the dust suction fan. Hard to touch.

Furthermore, in the present invention, it is preferable that the capturing member is configured to be detachable from the feeder case.

According to this characteristic configuration, since the capture member can be removed and replaced, the maintainability can be improved.

Furthermore, in the present invention, it is preferable that a fan case that covers the dust-absorbing fan is provided, and the capturing member is sandwiched and supported by the top plate of the feeder case and the lower end of the fan case.

According to this characteristic configuration, the capturing member can be stably supported.

Further, in the present invention, it is preferable that a projection is provided that protrudes upward from the top plate, and the capturing member and the lower end of the fan case are coupled to the projection by a fastener. .

According to this characteristic configuration, the capturing member and the fan case can be combined and easily connected to the protruding portion. Moreover, positioning of a capture member and a fan case is easy by a protruding part.

Furthermore, in the present invention, a pressing member that presses the lower end of the fan case from above is provided, and the pressing member, together with the fan case and the capturing member, are jointly connected to the protruding portion by the fastener. Is preferred.

According to this characteristic configuration, the pressing member, the fan case, and the capturing member can be combined together and easily connected to the protruding portion. Further, the pressing member, the fan case, and the capturing member can be easily positioned by the protruding portion.

Furthermore, in the present invention, it is preferable that the fastener is a wing nut or a knob nut.

According to this characteristic configuration, since the fastener can be tightened and loosened by hand without using a tool, workability can be improved.

Furthermore, in the present invention, it is preferable that a motor for driving the dust suction fan is provided, and a breaker for the motor is provided adjacent to the dust suction fan.

According to this characteristic configuration, since the breaker is located in the vicinity of the motor, the wiring between the breaker and the motor can be easily routed.

[3] Solution means corresponding to the problem [3] are as follows.
A feature of the present invention is that a sheave case is provided with a glen pan at a conveyance start end side thereof, a sieve wire is provided at a conveyance end portion of the glen pan, and the sieve line is formed in a substantially wave shape in a side view. There is in being.

According to this characteristic configuration, since the sieving line is formed in a substantially wave shape, a feeding action can be imparted to the threshing processed product by the sieving line. Therefore, the threshing processed material from the grain pan can be sorted while being smoothly conveyed by the sieving line.

Furthermore, in the present invention, it is preferable that the sieving line is inclined upward in the conveyance end side in a side view.

According to this characteristic configuration, when the sieving line is inclined, a returning action can be imparted to the threshing product by the sieving line. Therefore, by returning the threshing processed product from the grain pan to the conveyance start end side by the sieving line, it is possible to secure many selection opportunities by the sieving line.

Further, in the present invention, it is preferable that a plurality of sieve lines are provided at a conveyance end portion of the Glen pan, and the plurality of sieve lines are arranged in parallel in the conveyance direction in the sheave case.

According to this characteristic configuration, it is possible to improve the sorting accuracy by sorting the threshing products from the grain bread step by step with a plurality of sieve lines.

Furthermore, in the present invention, in the plurality of sieving lines, it is preferable that the sieving line on the conveyance end side is provided at a position higher than the sieving line on the conveyance start end side.

According to this characteristic configuration, the threshing product is dropped from the sieving line on the conveyance end side at a high position, and the lump of the threshing product is loosened by the impact at the time of the fall, so that the selection accuracy can be improved. .

Further, in the present invention, in the plurality of sieve lines, it is preferable that the conveyance end side of the sieve line on the conveyance start end side is provided at a position higher than the conveyance start end side of the sieve line on the conveyance end side.

According to this characteristic configuration, there is a step between the conveyance end side of the sieving line on the conveyance start side and the conveyance start end side of the sieving line on the conveyance end side, so that the sieving line on the conveyance start side and the conveyance end side are The threshing product is not easily clogged between the transfer with the sieving line. In addition, the threshing treatment product falls from the conveyance end side of the sieving line on the conveyance start end side to the conveyance start end side of the sieving line on the conveyance end side, and the lump of the threshing treatment product is loosened by the impact at the time of the fall, so the sorting accuracy Can be improved.

Further, in the present invention, it is preferable that the plurality of sieve lines are inclined upward in the conveyance end side in a side view, and the inclination angle is larger as the sieve line on the conveyance end side.

According to this characteristic configuration, the return action imparted to the threshing product by the sieving line becomes larger toward the conveyance end side because the sieving line on the conveyance end side is inclined more greatly. Therefore, many selection opportunities by the sieving line can be ensured by largely returning the threshing processed product on the conveying end side to the conveying start end side by the sieving line.

Furthermore, in the present invention, a pallet for supplying sorting air to the transfer end portion of the grain pan in the sheave case is provided, and the transfer end portion of one sieve line and the other sieve line adjacent to each other in the transfer direction in the plurality of sieve lines It is preferable that a predetermined gap is formed between the transfer start end portion.

According to this characteristic configuration, since the sorting air blows through the gap between one sieving line and the other sieving line, the sorting wind flows smoothly. In addition, since there is a gap between one sieving line and the other sieving line, the threshing product is not easily clogged between the passing of one sieving line and the other sieving line.

Further, in the present invention, it is preferable that a chaff sheave is provided below the sieve line in the sheave case, and the gap overlaps with a conveyance start end side of the chaff sheave in a plan view.

According to this characteristic configuration, even if the threshing product falls from the gap between one sieve line and the other sieve line, it falls on the conveyance start end side of the chaff sheave, so one sieve line and the other The threshing processed material dropped from the gap between the sieving lines can be passed on to the chaff sheave.

Furthermore, in the present invention, a chaff sheave is provided below the sieve line in the sheave case, and a sieve line on the conveyance end side of the plurality of sieve lines is arranged above the conveyance start end side of the chaff sheave, and It is preferable that at least a part thereof overlaps the conveyance start end side of the chaff sheave in a plan view.

According to this characteristic configuration, the threshing product from the sieving line on the conveyance end side falls on the conveyance start end side of the chaff sheave, so that the threshing product that has fallen from the sieving line on the conveyance end side can be inherited to the chaff sheave. it can.

Furthermore, in the present invention, a first recovery part is provided below the sheave case, and a sieve wire on the conveyance end side among the plurality of sieve lines is disposed above the first recovery part, and It is preferable that at least a part thereof overlaps with the first recovery portion in plan view.

According to this characteristic configuration, the threshing processed material from the sieving line on the conveyance end side falls on the first recovery unit, and therefore the threshing product that has fallen from the sieving line on the conveyance end side is recovered in the first recovery unit. can do.

Furthermore, in the present invention, it is preferable that at least a part of the sieving line protrudes above the upper side of the sheave case.

Furthermore, in the present invention, a tang for supplying the sorting wind to the transfer end portion of the grain pan in the sheave case is provided, and the tang has a first air passage through which the sorting wind supplied to the lower part of the sheave case flows, and the sheave And a second air passage through which the sorting air supplied to the upper part of the case flows. The second air passage preferably supplies the sorting air to the conveyance start end side of the sheave case.

According to this characteristic configuration, the sorting air can be distributed to the lower part and the upper part of the sheave case by distributing the sorting air to the lower part and the upper part of the sheave case by the first air path and the second air path. . Then, by supplying the sorting air to the conveyance start end side of the sheave case by the second air path, the sorting air can be spread from the conveyance start end side of the sheave case to the conveyance end side.

Furthermore, in the present invention, it is preferable that the Glen pan is provided only at the conveyance start end of the sheave case.

According to this characteristic configuration, the grain recovery rate can be improved by shortening the grain pan and increasing the leakage area of the leakage selection unit.

Furthermore, in the present invention, a sheave case, and a carp for supplying sorting air to the sheave case, the carp has a first air passage through which the sorting air supplied to the lower part of the sheave case flows, and the sheave case A second air passage through which the sorting air supplied to the upper portion of the air passage flows, and the second air passage is formed so as to extend in the transport start end direction and to make a U-turn in the transport end side direction, It is preferable to supply the sorting air to the conveyance start end side.

According to this characteristic configuration, the sorting air can be distributed from the lower part to the upper part of the sheave case by distributing the sorting air to the lower part and the upper part of the sheave case by the first air path and the second air path. . Then, by supplying the sorting air to the conveyance start end side of the sheave case by the second air path, the sorting air can be spread from the conveyance start end side of the sheave case to the conveyance end side. As a result of the second air passage being formed to make a U-turn, the air passage length of the second air passage becomes longer, and therefore the flow of the selected air tends to be laminar. Therefore, it is possible to supply the sorting air having a stable flow.

Furthermore, in the present invention, the tang includes a blade member that can rotate around an axis center in a conveyance orthogonal direction in a plan view, and a fan case that covers the blade member, and the second air passage includes the fan case It is preferable to communicate with the upper part of the conveyance start end side.

According to this characteristic configuration, the U-turn shape that supplies the sorting air to the conveyance start end side of the sheave case by the U-turn-shaped second air passage by communicating the second air passage with the upper part of the conveyance start end side of the fan case. The second air passage can be easily configured.

In the present invention, it is preferable that the sheave case is formed with a third air passage through which the selected air from the second air passage flows.

According to this characteristic configuration, the sorting air from the second air passage flows through the third air passage, so that the sorting air can be reliably supplied to the upper part of the sheave case.

Furthermore, in the present invention, it is preferable that the inlet portion of the third air passage is provided on the vertical wall at the conveyance start end side of the sheave case.

According to this feature configuration, since the inlet portion of the third air passage opens in the front wall of the sheave case on the conveyance start end side, the second air passage can be easily connected to the inlet portion of the third air passage. .

Furthermore, in the present invention, it is preferable that the inlet portion of the third air passage is provided on the lower wall on the conveyance start end side of the sheave case.

According to this characteristic configuration, since the inlet portion of the third air passage opens in the lower wall at the conveyance start end side of the sheave case, the second air passage can be easily connected to the inlet portion of the third air passage. .

Furthermore, in the present invention, a sheave case, and a tang for supplying a sorting wind to the sheave case, the sheave case includes a first gren pan provided on a conveying start end side, and a lower side of the first gren pan. A second glen pan provided, a leakage selection unit provided at a conveyance end of the first gren pan, and a chaff sheave provided at a conveyance end side of the second gren pan, the leakage selection unit comprising: It is preferable that it is disposed above the second Glen pan and above the chaff sheave.

According to this characteristic configuration, the leakage screening unit extends to the upper side of the chaff sheave, so that the chaff sheave is supplied with the threshing processed material roughly selected by the leakage screening unit. Therefore, the sorting load applied to the chaff sheave can be reduced. If the sorting load on the chaff sheave can be reduced, a large amount of crops can be sorted without increasing the size of the chaff sheave and thus the threshing device.

Furthermore, in the present invention, it is preferable that the second Glen pan and the chaff sheave are arranged at substantially the same height.

According to this characteristic configuration, there is no step between the second gren pan and the chaff sheave, so that the flow of the sorting air of the Kara is improved. In addition, since the threshing processed product is roughly selected by the leakage selection unit, the threshing processed product is not clogged without providing a step between the second gren pan and the chaff sheave.

Furthermore, in the present invention, it is preferable that the chaff sheave is inclined upward in the conveyance end side in a side view.

According to this characteristic configuration, the threshing product is guided to the conveyance start end side along the inclination of the chaff sheave, so that it easily leaks from the conveyance start end side of the chaff sheave. Therefore, since the grain can be collected as much as possible on the conveyance start end side of the threshing apparatus, the loss of the grain can be reduced. In addition, since the threshing processed product is roughly selected by the leakage selection unit, the threshing processed product is not clogged even if the chaff sheave is inclined upward on the conveyance end side.

[4] The solution corresponding to the problem [4] is as follows.
The present invention is characterized in that a first working unit, a second working unit different from the first working unit, and a third working unit different from the first working unit and the second working unit. An operation lever capable of commanding the first working unit to be operated in the vicinity of the driver's seat, and a first surface for positioning the operator's thumb on the operation lever; A grip portion formed on a surface different from the first surface and having a second surface on which four fingers other than the thumb are positioned is provided, and the second working unit is provided on the first surface. And a first command input means for inputting a command of the contradicting motion by swinging the thumb around the base while following the first surface. On the second surface, it is possible to instruct the third working unit to perform a conflicting operation, and 4 other than the thumb. In that the second command input means for inputting a command for contradictory operations provided by the pressing operation by either.

In the case of this feature configuration, the first command input means and the second command input means are arranged on different surfaces. Less. In addition, the first command input means performs input by swinging the thumb around the base while following the first surface, and the second command input means includes four fingers other than the thumb. Both of the means can be input by simple finger operation, such as input by pressing any one of the above, so the operability is good, for example, the operation lever and these means can be operated simultaneously. Even in the case of operation, reliable operation input is possible.

Furthermore, in the present invention, it is preferable that the first command input means is a rocker switch.

With this feature configuration, since the first command input means is a rocker switch (seesaw type switch) that can selectively select different inputs, there is no simultaneous command of conflicting operation commands. It is possible to accurately input an operation command for the second working unit. Also, because of the shape of the rocker switch, the two input locations are connected with a smooth surface, so that the thumb can be moved from one input location to the other by simply swinging the thumb along the surface of the rocker switch. It is moved to the location. In this way, with this feature configuration, an input operation error of the first command input means is prevented, and a smooth input operation of the first command input means is possible.

Furthermore, in the present invention, it is preferable that the second command input means is a rocker switch.

In this feature configuration, the second command input means is a rocker switch that can selectively select different inputs. For example, an index finger is placed at one input location and a middle finger is placed at the other input location. In such a case, the input operation of the second command input means can be performed only by pressing one of the fingers without moving the entire hand. In addition, it is possible to accurately input an operation command for the third working unit without simultaneously issuing conflicting operation commands by both fingers. Thus, with this feature configuration, the input operation of the second command input means can be easily performed, and an input operation error of the second command input means can be prevented.

Further, in the present invention, the grip portion is formed with an upper surface that is different from the first surface and the second surface and on which the operator's palm is placed, and the first command input means Is preferably formed on a side portion of the grip portion closer to the driver, and the second command input means is formed on a side portion of the grip portion far from the driver.

With this feature configuration, if the operation lever is gripped with the palm placed on the upper surface of the operation lever, the thumb can be positioned on the first surface with a natural posture without taking an unreasonable posture. Four fingers are positioned on the second surface.

Further, in the present invention, it is preferable that the second command input means is disposed in an inclined state so as to be positioned downward as the distance from the operator increases.

In the case of this feature configuration, in the operation lever of the type grasped from above, the second command input means is inclined so as to be positioned downward as it is farther from the operator. The little finger side) will bend a lot. As a result, the little finger side is strongly squeezed so that force can be firmly applied to the hand or finger and the second command input means can be operated accurately.

Furthermore, in the present invention, it is preferable that the upper surface is inclined so as to be positioned lower as it is farther from the operator.

According to this characteristic configuration, since the upper surface of the operation lever is inclined so as to be positioned downward as the operator moves away from the operator, the hand holding the operation lever is in a state of falling outward. At this time, the forearm naturally follows the hand tilt so that the wrist is not twisted. As a result, the elbow is close to the body and the armpits are closed, and the shoulder is less likely to be burdened than the armpits are open.

In the present invention, it is preferable that the second command input means is disposed along the direction of the upper surface.

Usually, the index finger, the middle finger, and the ring finger can exert a strong pressing force with four fingers other than the thumb. Then, in the state where the operation lever is grasped from above, the tips of these three fingers are located at substantially the same distance from the upper surface. With this feature configuration, any two fingers of the index finger, the middle finger, and the ring finger are positioned on the second command input means in a natural state, and the second command input means can be easily operated.

Further, in the present invention, it is preferable that the second surface is inclined so as to be positioned rearward as it is farther from the operator in plan view.

With this feature configuration, the posture of the hand is in an open state with respect to the front-rear direction in plan view, so the side is naturally closed and the arm is moved back and forth to operate the operation lever back and forth. However, it is hard to put a burden on the shoulders and elbows.

Furthermore, in the present invention, it is preferable that the first surface is inclined so as to be positioned forward as the distance from the operator increases in plan view.

Further, in the present invention, it is preferable that the first working unit is a transmission of a traveling transmission, and the operation lever is a transmission lever capable of instructing a transmission operation to the transmission.

According to this characteristic configuration, the first command input means and the second command input means are arranged on the frequently used speed change lever. Therefore, a hand for operating input of these means is provided. Less movement is required.

In the present invention, it is preferable that the speed change lever is a main speed change lever.

In the case of this characteristic configuration, the first command input means and the second command input means are generally disposed on the main transmission lever that is generally held at all times. There is no need to move your hands.

Furthermore, in the present invention, the second working unit or the third working unit is a cutting / lifting control unit that lifts / lowers the cutting unit or a reel lifting / lowering control unit that moves up and down the scraping reel provided in the cutting unit. It is preferable.

If it is this characteristic structure, while operating the 1st operation part with an operation lever, the raising / lowering operation of a cutting part or the raising / lowering operation of a reel can be performed with the hand which grasped the operation lever, and it is a combine with good operation. be able to.

Furthermore, in the present invention, it is preferable that the second working unit is a cutting lifting control unit that lifts and lowers the cutting unit.

If it is this characteristic structure, the raising / lowering operation of a cutting part can be performed with the hand which grasped the operation lever, operating the 1st operation | work part with an operation lever, and it can be set as the combine with a favorable operation. Further, since the first command input means performs an input operation with the thumb positioned closer to the body than the other four fingers, the third working unit is located on the front side (the side farther from the body) than the cutting unit. ), It is possible to intuitively understand that the means that can command the lifting operation of the reaping part is the first command input means, and it is difficult for the second command input means to be mistaken. .

Furthermore, in the present invention, it is preferable that the second working unit is a harvesting raising / lowering control unit that raises and lowers a harvesting unit that harvests crops in a field.

With this feature configuration, the harvesting section can be lifted and lowered with the hand that holds the operating lever while operating the first working section with the operating lever, and the combine can be easily operated.

In the present invention, it is preferable that the third working unit is a reel lifting control unit that lifts and lowers the scraping reel.

With this feature configuration, it is possible to perform the raising and lowering operation of the scraping reel with the hand holding the operation lever while operating the first working unit with the operation lever, and it is possible to obtain a combine that is easy to operate. Further, since the second command input means performs an input operation with the other four fingers positioned on the side farther from the body than the thumb, the second working unit is located behind the scraping reel (on the body). In the case of a working unit located on the near side), it can be intuitively understood that the means that can command the raising and lowering operation of the scraping reel is the first command input means, and it is mistaken for the first command input means. Is unlikely to occur.

Furthermore, in the present invention, it is preferable that the third working unit is a rotary chopper elevating control unit that elevates and lowers a rotary chopper that crushes the stems remaining in the field after the crop is harvested.

特徴 With this feature configuration, the rotary chopper can be lifted and lowered with the hand holding the operation lever while operating the first working unit with the operation lever, so that the combine is easy to operate.

Furthermore, in the present invention, it is preferable that the lever guide for guiding the operation lever is provided at substantially the same height as the seat surface of the driver's seat.

With this feature configuration, the operation lever can be arranged at a height that is easy for the operator to operate.

Furthermore, in the present invention, it is preferable that the operation lever is provided on the right side of the driver's seat.

With this feature configuration, for example, when driving on the road in a country where right-hand traffic is stipulated by law, the country's general passenger car, etc. (driver's seat: left side of vehicle body, shift lever: right side of driver's seat) Shift operation can be performed with the same feeling.

In the present invention, it is preferable that the first working unit is a transmission for a traveling transmission, and includes a front wheel and a rear wheel, and the traveling transmission drives the front wheel and the rear wheel.

This feature configuration is advantageous for traveling on roads other than the field compared to a crawler combine.

Further, in the present invention, it is preferable that the rear wheel is a steered wheel and a steering wheel for steering the rear wheel is provided.

With this feature configuration, since the rear wheel is a steered wheel, the turning radius can be made smaller than in the case where the front wheel is a steered wheel, and the combine becomes more efficient. In addition, since the rear wheel is steered by the steering wheel, the amount of operation of the steering support tool relative to the unit turning amount can be set larger than the steering lever, etc., and the turning amount can be commanded finely, and A drastic turning operation is also possible.

It is a mimetic diagram explaining the basic composition of the crawler traveling device concerning a first embodiment of the present invention. It is a side view showing the whole combine equipped with one of concrete embodiments of the crawler traveling device concerning a first embodiment of the present invention. It is a side view of a crawler traveling device. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. FIG. 5 is a sectional view taken along line VV in FIG. 3. FIG. 4 is a sectional view taken along line VI-VI in FIG. 3. It is a top view which shows the advance / retreat mechanism which supports a tension sprocket. It is a perspective view which shows the attachment structure of a crawler guide. It is a side view which shows the normal combine which concerns on 2nd embodiment of this invention. It is a top view which shows a normal type combine. It is side surface sectional drawing which shows a dust suction fan and a capture member. It is front sectional drawing which shows a dust suction fan and a capture member. It is a plane sectional view showing a dust suction fan and a capturing member. It is a disassembled perspective view which shows a dust suction fan and a capture member. It is a disassembled perspective view which shows the dust suction fan and trapping member which concern on another embodiment of 2nd embodiment of this invention. Side surface sectional drawing which shows the threshing apparatus which concerns on 3rd embodiment of this invention. Side surface sectional drawing which shows the front part side of a selection part. Front sectional drawing which shows the front part of a selection part. Side surface sectional drawing which shows the left side part of the front part side of a selection part. Side surface sectional drawing which shows the right side part by the side of the front part of a selection part. The diagram which shows the power transmission path | route of a power transmission shaft. The top view which shows a 1st sieve line and a 2nd sieve line. The perspective sectional view showing the 1st sieve line and the 2nd sieve line. Side surface sectional drawing which shows the rear part side of a selection part. The top view which shows a 1st Strollac, a 2nd Strollac, and a 3rd Strollac. The perspective sectional view which shows a 1st Strollac, a 2nd Strollac, and a 3rd Strollack. It is a side view which shows the whole combine which concerns on 4th embodiment of this invention. It is a top view which shows an operation part. It is a front view which shows an operation part. It is a top view which shows the periphery of a main transmission lever. It is a fragmentary sectional view in front view which shows the periphery of the main transmission lever when the main transmission lever exists in a work advance region. It is a perspective view which shows an operation part. FIG. 32 is a sectional view taken along the line XXXIII-XXXIII in FIG. 31. It is a side view which shows the whole corn harvester which is another embodiment of 4th embodiment of this invention.

[First embodiment]
A first embodiment of the present invention will be described below.
Before explaining a specific embodiment of the harvester according to the first embodiment of the present invention, a basic structure characterizing the present invention will be described with reference to FIG.

The crawler traveling device 1 includes a track frame 20 supported by a body frame 3 of a work vehicle such as a combine or a backhoe. A pair of left and right track frames 20 extend in the longitudinal direction of the machine body. FIG. 1 shows the track frame 20 on the left in the forward direction. A drive sprocket 21 is disposed at the front of the track frame 20, and a tension sprocket 22 is disposed at the rear of the track frame 20. A crawler belt 26 is wound around the drive sprocket 21 and the tension sprocket 22. A plurality of rolling wheels 23 for guiding the crawler belt 26 toward the ground are disposed below the track frame 20.

The wheel 23 is a structure in which a pair of left and right wheel half bodies 23 a are connected by a wheel shaft 8. On the lower surface of the track frame 20, there is provided an attachment member 6 in which a female screw 6a for attaching the wheel 23 is formed. The wheel 23 is detachably attached to the attachment member 6 via the attachment unit 60 by the fixing bolt 90 and, consequently, to the track frame 20. In order to strengthen the screw fastening by the fixing bolt 90, the length of the female screw 6a is sufficiently long. Therefore, the attachment member 6 is formed of a thick member, and the attachment member 6 is a frame body constituting the track frame 20 ( It also functions as a reinforcing plate for steel plates such as square pipes. Moreover, it is preferable to divide the attachment member 6 into a plurality of attachment member pieces and arrange them intermittently from the viewpoint of weight increase, instead of a single long member.

Since a plurality of rolling wheels 23 are attached to one mounting unit 60, a plurality of units of rolling wheels 23 are also removed by removing the mounting unit 60 from the mounting member 6. The mounting unit 60 includes a boss member 60B that supports the wheel shaft 8 and a groove member 60A that fixes the boss member 60B. The boss member 60B is a cylindrical body, bearings are mounted on the inner wall surfaces at both ends, and the roller shaft 8 passing through the boss member 60B is supported. The wheel half members 23a are fixed to the protruding portions of the wheel shaft 8 protruding from both ends of the boss member 60B.

The groove-shaped member 60A is a longitudinal member that creates a concave portion that opens downward, and its cross section is substantially an inverted U shape, a gate shape, and an arch shape, but is a solid portion in the middle of the front-rear direction. Or a transverse partition may be provided. At least a part of the upper surface portion of the groove-shaped member 60 A is formed so as to be in a horizontal plane and come into surface contact with a contact surface formed at the lower portion of the attachment member 6. A plurality of boss members 60B are preferably joined by welding at predetermined intervals in the front-rear direction of the machine body so as to straddle the side surfaces hanging from the left and right ends of the upper surface portion of the groove-shaped member 60A. Further, in order to secure the weld length between the groove-shaped member 60A and the boss member 60B, an arcuate receiving surface for receiving the boss member 60B is formed on the side surface portion, or a connection relay material. An auxiliary flange plate is provided that functions as:

Through holes for allowing the fixing bolts 90 to pass therethrough are provided in the upper surface portion of the channel member 60A at intervals so as not to overlap the boss member 60B. This through hole corresponds to the position of the female screw 6 a of the mounting member 6. Thereby, when fixing the attachment unit 60 to the attachment member 6 so that attachment or detachment is possible, the fixing bolt 90 inserted through the through hole from the lower opening of the groove formed in the groove-shaped member 60A is inserted into the female screw 6a of the attachment member 6. Screwed on.

Next, one specific embodiment of the crawler traveling device 1 according to the present invention will be described with reference to the drawings. This crawler traveling device 1 is equipped in a combine. FIG. 2 is a side view of the combine.

As shown in FIG. 2, the combine is a normal combine, and includes a pair of left and right crawler travel devices 1 below a body frame 3 extending in the front-rear direction, which is the travel direction. Self-propelled by being driven by a driving force from an engine (not shown) provided below the driver seat 11. A mowing unit 10 is connected to the front part of the machine body frame 3, and a threshing device 12 and a grain tank 13 are provided to the rear part of the machine body frame 3. The mowing unit 10 can be moved up and down by a hydraulic cylinder 15 between a lowering working position and a rising non-working position. The combine performs harvesting work such as rice and wheat by running the traveling machine with the cutting unit 10 in the lowering work position.

The harvesting unit 10 conveys the rotary reel 10a that scrapes the crop head to be harvested toward the rear, the clipper type harvesting device 10b that cuts and harvests the crop stock, and the grain straws to the rear side of the machine body. The feeder 12a etc. which are supplied to the threshing device 12 are provided. The grain tank 13 collects and stores the threshed grains conveyed from the threshing device 12. The stored threshing grains are carried out by the auger 14.

FIG. 3 is a side view showing the entire crawler traveling device 1 on the left side. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. As shown in FIGS. 3 and 4, the crawler traveling device 1 includes a track frame 20 that extends in the front-rear direction as a base body. The track frame 20 is supported by the body frame 3 in such a manner as to be suspended from the body frame 3 via the front bracket 16a and the rear bracket 16b. The track frame 20 is a square pipe having a square cross section.

A drive sprocket 21 supported by the transmission case 17 is attached to a front portion of the track frame 20 via an attachment member 16c connected to the front bracket 16a, the track frame 20, and the body frame 3. A tension sprocket 22 is attached to the rear end of the track frame 20 via an advance / retreat mechanism 30 supported by the track frame 20. A rubber crawler belt 26 is wound around the drive sprocket 21 and the tension sprocket 22. Below the track frame 20 between the drive sprocket 21 and the tension sprocket 22, six rolling wheels 23 for guiding the belt side that feeds the grounding side of the crawler belt 26 are arranged. The drive sprocket 21 and the tension sprocket 22 are formed in a trough 26c formed between a pair of left and right cored bar projections 26a provided on a cored bar embedded in a plurality of locations in the longitudinal direction of the crawler belt 26. Bite into the teeth. The wheel 23 presses the crawler belt 26 to the ground so as to straddle the pair of left and right core metal protrusions 26a.

The plurality of rolling wheels 23 are supported by the track frame 20 via mounting units 60 that are divided into a front side and a rear side. In order to fix the bolt between the mounting unit 60 and the track frame 20, the mounting member 6 is welded and fixed to the mounting position of the mounting unit 60 on the lower surface of the track frame 20. The attachment member 6 has a thickness several times the wall thickness of the track frame that is each pipe, and also functions as a reinforcing plate of the track frame 20. The attachment member 6 is provided with a through hole, and a female screw 6a used for fixing the bolt is formed in the through hole. Further, an opening 20 a for releasing the bolt tip protruding from the attachment member 6 when the bolt is fixed is also provided on the lower surface of the track frame 20.

In this embodiment, the six wheels 23 are divided into two front and rear groups of three wheels 23, and each group is attached to a mounting unit 60 that is divided into a front side and a rear side. The two attachment units 60 are bolted to the track frame 20 as described above. Although the front mounting unit 60 and the rear mounting unit 60 are not identical in shape, there is no substantial difference, and therefore, they will be described in common here.

The mounting unit 60 includes a channel member 60A and a boss member 60B welded to the channel member 60A. The channel member 60 A is a long member composed of a bottom plate portion 62 and left and right side plate portions 61, both of which are plate materials. The left and right side plate portions 61 are connected at right angles to the bottom plate portion 62 from the left and right ends of the bottom plate portion 62, respectively, and have a rectangular cross-section internal space opened downward between the bottom plate portion 62 and the left and right side plate portions 61. Is producing. Note that channel steel in which the bottom plate portion 62 and the side plate portion 61 are integrated may be used as the groove member 60A. The boss member 60 B is a cylindrical body having a substantially constant outer diameter, and its axial length is longer than the interval between the left and right side plate portions 61. As a result, the boss member 60 B has a portion protruding outward from the side plate portion 61. The side plate portion 61 is provided with a semicircular cutout in accordance with the mounting pitch of the wheel 23, and the side plate portion 61, the boss member 60B, and the boss member 60B are inserted into the cutout with the outer peripheral surface of the boss member 60B fitted. Are welded.

The wheel 23 includes a wheel shaft 8 and a pair of left and right wheel half bodies 23 a that are bolted to both ends of the wheel shaft 8. Ball bearings 80 that support the wheel shaft 8 are disposed on the inner wall surfaces of both end regions of the boss member 60B, and the wheel shaft 8 is rotatably supported. A seal member 81 is attached to the outside of each ball bearing 80. The roller shaft 8 is longer than the boss member 60B, and the wheel half members 23a are fixed to the protruding portions of the roller shaft 8 protruding from both ends of the boss member 60B. The roller shaft 8 is formed with a grease injection hole 8a. The grease injected from the grease injection port provided at the end of the wheel shaft 8 passes through the grease injection hole 8a, and the inner wall surface of the boss member 60B. A space formed between the pair of left and right ball bearings 80 is filled. Note that a bleeder means is formed for releasing excess pressure when the grease pressure in the space increases. The bleeder means is a plug 82 that is screwed into a through screw hole provided in the peripheral wall of the boss member 60B, and an axial through hole 82a is formed in the plug 82 as an escape hole.

As described above, since the three wheels 23 and the mounting unit 60 are integrated, the three wheels 23 are fixed to the track frame 20 by fixing the mounting unit 60 to the track frame 20. In order to fix the mounting unit 60 to the track frame 20, the fixing bolt 90 is inserted into the through hole 62a provided in the bottom plate 62 from between the left and right side plate portions 61, and the mounting member 6 in which the female screw 6a is formed. Screwed into the through hole. Between the bolt head portion of the fixing bolt 90 and the bottom plate portion 62 of the channel member 60A, a contact plate 91 is interposed in addition to the washer and the spring washer. The contact plate 91 may be provided for each fixing bolt 90, but may be a long plate common to the plurality of fixing bolts 90. The contact plate 91 is fixed to the track frame 20 by welding or the like. Further, as is apparent from FIG. 3, two attachment members 6 are arranged at intervals in the front-rear direction for each attachment unit 60. Each mounting member 6 is provided with two through-holes in which a female screw 6a to be screwed with the fixing bolt 90 is provided so as to sandwich the wheel 23 in a side view. Since the lower part of the fixing bolt 90 is opened, the bolt fixing work is easy. Further, the left and right sides of any of the fixing bolts 90 are covered by the side plate portion 61, and there is little possibility of receiving muddy water or foreign matter directly.

As shown in FIG. 5, the guide wheel 25 that guides the upper transfer belt side of the crawler belt 26 has substantially the same structure as the wheel 23, and includes the wheel shaft 8 and the wheel shaft. 8 and a pair of left and right guide wheel half bodies 25a which are bolted to both ends. A guide wheel mounting unit 63 for mounting the guide wheel 25 to the track frame 20 is similar to the mounting unit 60 of the roller 23. The guide wheel mounting unit 63 includes a bracket 63A and a boss member 63B. The boss member 63B is the same as the boss member 60B of the mounting unit 60. The bracket 63A is composed of a pair of left and right bracket plates, one end of which is welded to the boss member 63B, and the other end is welded to the upper surface of the track frame 20. Of course, the guide wheel mounting unit 63 may be configured to be bolted to the track frame 20 in the same manner as the mounting unit 60 of the rolling wheel 23. Further, the bracket 63A may be connected to the rear bracket 16b after the track frame 20 is connected to the body frame 3.

As shown in FIGS. 6 and 7, the tension sprocket 22 is incorporated in an advancing / retracting mechanism 30 provided at the rear end portion of the track frame 20, and can be moved and adjusted with respect to the track frame 20 in the front-rear direction. The tension sprocket 22 is rotatably supported on the tension shaft 22b via a ball bearing provided on the boss portion. The sprocket portion 22a of the tension sprocket 22 has not a trapezoidal cross section but has a cross sectional shape in which a square is added below the trapezoid, and the strength is enhanced by the addition of the square cross section. As a result, the tension sprocket 22 has a larger diameter than the conventional one.

The advance / retreat mechanism 30 includes a holding unit 31, a support rod 32, and an adjustment screw mechanism 33. The holding unit 31 includes a plate-like base 31b and a pair of left and right side plates 31a standing on the rear surface of the base 31b. The tension shaft 22b that rotatably supports the tension sprocket 22 is supported at both ends by a pair of left and right side plates 31a. A support rod 32 extending in the longitudinal direction of the machine body is connected to the front surface of the base 31b. The support rod 32 has a rectangular outer cross section that coincides with or substantially coincides with the rectangular inner cross section of the track frame 20, and is guided by the inner surface of the track frame 20 in the track frame 20 in the longitudinal direction of the body. It is slidably inserted.

The adjustment screw mechanism 33 is provided in a pair of left and right with the track frame 20 interposed therebetween. Each adjustment screw mechanism 33 includes an adjustment screw body 33a that is a screw rod, a first screw body receiving portion 33b, and a second screw body receiving portion 33c. The first screw body receiving portion 33 b is fixed to the base 31 b of the holding unit 31, and the second screw body receiving portion 33 c is fixed to the bracket 27 connected to the track frame 20. The first screw body receiving portion 33 b and the second screw body receiving portion 33 c hold the adjustment screw body 33 a so that the adjustment screw body 33 a is parallel to the support rod 32. The 1st screw body receiving part 33b has a penetration screw hole screwed together with the screw part of adjustment screw body 33a. The second screw body receiving portion 33c has an engagement hole that penetrates the body portion of the adjustment screw body 33a and prohibits relative axial movement with the adjustment screw body 33a. That is, the adjusting screw mechanism 33 is a screw type reciprocating mechanism using the first screw body receiving portion 33b as a top member. Therefore, by rotating the adjustment screw body 33a in one direction, the tension sprocket 22 advances while being guided by the support rod 32 and the track frame 20, and by rotating the adjustment screw body 33a in the other direction, the tension sprocket 22 moves backward. By adjusting the movement of the tension sprocket 22 relative to the track frame 20 in the longitudinal direction of the machine body, an optimum tension of the crawler belt 26 is created, and the tension sprocket 22 is fixed at the optimum position.

As can be understood from FIGS. 4 and 7, when the tip of the fixing bolt 90 near the tension sprocket 22 out of the fixing bolt 90 for fixing the mounting unit 60 to the track frame 20 enters the track frame 20, the support is performed. Interference with the rod 32. For this reason, the length of the fixing bolt 90 that may interfere with the support rod 32 and the length of the mounting member 6 into which the fixing bolt 90 is inserted are the same as those of the fixing bolt 90 even if the fixing bolt 90 is tightened to the maximum. The tip is set so as not to reach the inside of the track frame 20.

As shown in FIGS. 4, 5, and 6, the pair of left and right wheel half bodies 23 a of the six wheel wheels 23 are positioned on both lateral outer sides of the pair of left and right cored bar protrusions 26 a of the crawler belt 26, respectively. Supports the inner peripheral surface of the. As shown in FIGS. 3 and 8, the crawler guide 28 that presses the valley portion 26 c formed between the pair of left and right cored bar protrusions 26 a is bolted to the side plate portion 61 of the channel member 60 A of the mounting unit 40. Has been.

The crawler guide 28 includes a ski plate-shaped guide main body portion 28a and an attachment portion 28b protruding from the upper surface of the guide main body portion 28a. The guide main body portion 28a and the attachment portion 28b are integrally formed by casting. Yes. The width of the guide main body portion 28a corresponds to the valley portion 26c of the crawler belt 26, and the width of the mounting portion 28b corresponds to the interval between the left and right side plate portions 61 of the channel member 60A. The side plate portion 61 and the attachment portion 28b are provided with common through

holes

61a and 28c at an intermediate position between the adjacent wheel shafts 8. By using the through

holes

61a and 28c, the crawler guide 28 is It is bolted to the mounting unit 40.

[Another embodiment of the first embodiment]

(1) In the first embodiment described above, the three rolling wheels 23 are provided in one mounting unit 60 as one set, but the number of the rolling wheels 23 provided in one mounting unit may be two. There may be four or more.

(2) In the first embodiment described above, the shapes of all the wheels 23 are the same, but different shapes may be combined.

(3) In the first embodiment described above, the crawler guide 28 is integrally formed with the guide main body portion 28a and the attachment portion 28b. However, after the guide main body portion 28a and the attachment portion 28b are separately formed, welding or the like is performed. You may connect by.

(4) In the first embodiment described above, the track frame 20 is a quadrangular or square pipe material, but may be another polygonal or circular pipe material. At this time, the support rod 32 inserted into the inside of the track frame 20 may have a cross section corresponding to the inner cross section of the track frame 20.

(5) In the first embodiment described above, the attachment member 6 is formed of a long plate material common to the plurality of fixing bolts 90, but for one fixing bolt 90, that is, one female screw. It is good also as a short board material which formed only 6a.

(6) In the first embodiment described above, the track frame 20 is fixed to the body frame 3, but the track frame 20 can be moved up and down via a pair of front and rear swingable support arms. You may employ | adopt the structure which is supported.

[Second Embodiment]
A second embodiment of the present invention will be described below.
First, the overall configuration of the ordinary combine according to the second embodiment of the present invention will be described with reference to FIGS.

As shown in FIGS. 9 and 10, the ordinary combine is provided with a crawler type traveling machine body 101. A driving unit 102 is provided at the front of the traveling machine body 101. A threshing device 103 and a grain tank 104 are juxtaposed in the left-right direction behind the operation unit 102. Further, a cutting part 105 is provided in front of the traveling machine body 101. A feeder 106 that conveys the harvested cereal meal to the threshing device 103 is provided at the rear of the harvesting unit 105.

As shown in FIG. 11, the feeder 106 conveys the harvested cereal meal in the feeder case 107. A front rotating body 108 is rotatably supported at the front end portion of the feeder case 107. A rear rotating body 109 is rotatably supported at the rear end portion of the feeder case 107. A pair of left and right transport chains 110 are wound around the front rotating body 108 and the rear rotating body 109. A pair of left and right transport chains 110 are provided with a transport plate 111. The pair of left and right transport chains 110 rotate forward in the direction of arrow A1 by a forward rotation mechanism (not shown), and reversely rotate in the direction opposite to arrow A1 by a reverse rotation mechanism (not shown).

Further, a dust suction port 170 a is formed in the top plate 170 of the feeder case 107. Above the dust suction port 170a, a dust suction fan 112 that sucks dust in the feeder case 107 from the dust suction port 170a and discharges it to the outside is provided. A capturing member 120, which will be described in detail later, is attached to the dust suction port 170a.

Next, the dust suction fan 112 will be described with reference to FIGS.

As shown in FIGS. 12 to 14, the dust suction fan 112 rotates around the axis X 1 that faces in the left-right direction. The dust suction fan 112 is driven by a motor 113. The dust suction fan 112 is covered with a fan case 115. Further, the dust suction fan 112 is disposed near the left lateral end of the top plate 170 of the feeder case 107. The lower end of the rotation locus of the dust suction fan 112 is located at the periphery (or the vicinity thereof) of the dust suction port 170a. The end of the dust suction fan 112 on the downstream side in the direction of dust flow is substantially flush with the outer surface of the lateral plate portion 171 of the feeder case 107.

The fan case 115 includes a suction side case 116 and a discharge side case 117. The suction side case 116 is disposed upstream of the dust suction fan 112 in the dust flow direction. The discharge case 117 is disposed downstream of the dust suction fan 112 in the direction of dust flow. The suction side case 116 and the discharge side case 117 are detachably connected (removable) with bolts 118. A connecting portion between the suction side case 116 and the discharge side case 117 is located on substantially the same plane as the outer surface of the lateral plate portion 171 of the feeder case 107.

The lower end of the suction side case 116 is connected to a stud bolt 124 (corresponding to a “projection” according to the present invention) protruding upward from the top plate 170 by a knob nut 125 (corresponding to a “fastener” according to the present invention). Has been. A plurality of (for example, four) stud bolts 124 protrude upward from the top plate 170. Four bolt holes 116 a through which stud bolts 124 are inserted are formed at the lower end of the suction side case 116. The lower end of the suction side case 116 is pressed from above by a pressing frame 126 (corresponding to a “pressing member” according to the present invention). Further, a recessed portion 116 b that is recessed into the dust suction fan 112 side is formed in a portion of the suction side case 116 that faces the dust suction fan 112.

The recessed portion 116b is formed in a portion of the suction side case 116 that opposes the direction of the dust suction fan 112 and the axis X1. The recess insertion direction of the recess 116b is the lateral lateral direction (left lateral lateral direction).

The motor 113 is disposed upstream of the dust suction fan 112 in the dust flow direction. That is, the motor 113 inputs power from the upstream side in the dust flow direction to the dust suction fan 112. The motor 113 is disposed between the dust suction port 170a and the dust suction fan 112. The motor 113 is partitioned from a dust flow path through which dust flows. Specifically, the motor 113 is covered with a cover 119 in a section where the recessed portion 116b and the dust suction fan 112 face each other. The motor 113 is supported in a state of penetrating through the recessed portion 116b (the bottom portion of the recessed portion 116b).

The holding frame 126 is formed with four bolt holes 126a through which the stud bolts 124 are inserted. The holding frame 126 is coupled to the stud bolt 124 by a knob nut 125 together with the lower end of the suction side case 16. That is, the holding frame 126 is coupled to the stud bolt 124 by the knob nut 125 together with the suction side case 116 and the capturing member 120. Further, a breaker 114 for the motor 113 is attached to the holding frame 126 via an attachment stay 127. That is, a breaker 114 for the motor 113 is provided adjacent to the dust suction fan 112.

Next, the capture member 120 will be described with reference to FIGS.

As shown in FIGS. 12 to 14, the capturing member 120 captures the cereals that flow toward the dust suction fan 112. The capturing member 120 is sandwiched and supported by the top plate 170 of the feeder case 107 and the lower end of the suction side case 116. The capturing member 120 is configured to be detachable from the feeder case 107. Specifically, the capture member 120 is coupled to the stud bolt 124 by a knob nut 125 together with the lower end of the suction side case 116. The capturing member 120 includes a plurality (three in this embodiment) of round bars 121 (corresponding to “bar-shaped members” according to the present invention) and a pair of front and rear support frames 122 and 123.

The round bars 121 are arranged so as not to cross each other over the dust suction port 170a. Specifically, the round bar 121 is disposed substantially parallel to the conveyance direction (front-rear direction) of the feeder 106. In addition, the three round bars 121 are arranged at a predetermined interval (for example, at equal intervals). A gap between the adjacent round bars 121 among the three round bars 121 is formed over the entire length (front-rear direction) of the dust suction port 170a. The round bar 121 is disposed only on the left side (laterally outside) of the width B in the left-right direction of the dust suction port 170a. The round bar 121 is disposed so as not to protrude above the top surface of the top plate 170 of the feeder case 107. That is, the round bar 121 is disposed on the lower surfaces of the pair of front and rear support frames 122 and 123.

The pair of front and rear support frames 122 and 123 are disposed on the top surface of the top plate 170 of the feeder case 107. Of the pair of front and rear support frames 122 and 123, the front support frame 122 is disposed along the front edge of the dust suction port 170a. A bolt hole 122b through which the stud bolt 124 is inserted is formed at the left end portion of the front support frame 122. A front fixing part 122 a is formed on the front support frame 122. The front fixing portion 122a protrudes from the front edge of the dust suction port 170a toward the center of the dust suction port 170a. The front end portion of the round bar 121 is fixed (for example, welded or the like) to the lower surface of the front fixing portion 122a.

Of the pair of front and rear support frames 122 and 123, the rear support frame 123 is disposed along the rear edge of the dust suction port 170a. A bolt hole 123b through which the stud bolt 124 is inserted is formed in the left end portion of the rear support frame 123. A rear fixing portion 123 a to which the rear end portion of the round bar 121 is fixed is formed on the rear support frame 123. The rear fixing portion 123a protrudes from the rear side edge of the dust suction port 170a toward the center side of the dust suction port 170a. The rear end portion of the round bar 121 is fixed (for example, by welding) to the lower surface of the rear fixing portion 123a in the rear support frame 123.

With the above configuration, in the capturing member 120, the three round bars 121 are arranged so as not to cross each other over the dust suction port 170a. That is, in the capturing member 120, a gap between the adjacent round bars 121 of the three round bars 121 is formed over the entire length (front-rear direction) of the dust suction port 170a. Therefore, while trapping the cereals flowing toward the dust suction fan 112 with the three round bars 121, the entanglement of the cereals between the round bars 121 adjacent to each other among the three round bars 121 occurs. It is hard to occur.

[Another embodiment of the second embodiment]

Hereinafter, another embodiment of the second embodiment of the present invention will be described.

(1) In the second embodiment, the capturing member 120 is provided with a pair of front and rear support frames 122 and 123. For example, as shown in FIG. One end portion of the support frame 123 on the side may be connected by a support frame. In this case, bolt holes are also formed in a connection portion between the one end portion of the front support frame 122 and the support frame and a connection portion between the one end portion of the rear support frame 123 and the support frame. . Although not shown, one end of the front support frame 122 and one end of the rear support frame 123 are connected by a support frame, and the other end of the front support frame 122 and the rear support are connected. The other end of the frame 123 may be connected by a support frame.

(2) In the second embodiment, the round bar 121 is disposed substantially parallel to the conveyance direction of the feeder 106, but the round bar 121 is disposed substantially orthogonal to the conveyance direction of the feeder 106. It may be. Further, the round bar 121 may be disposed obliquely with respect to the conveying direction of the feeder 106.

(3) In the second embodiment, the “bar-shaped member” according to the present invention is a round bar 121, but the “bar-shaped member” according to the present invention is a square bar (for example, a square bar having a square cross section). But you can.

(4) In the second embodiment, the number of the round bars 121 is three, but the number of the round bars 121 may be two or four or more.

(5) In the second embodiment, the number of stud bolts 124 is four, but the number of stud bolts 124 may be five or more.

(6) In the second embodiment, the “fastener” according to the present invention is the knob nut 125, but the “fastener” according to the present invention may be a wing nut.

(7) In the second embodiment, the suction side case 116 and the discharge side case 117 are detachably connected by a bolt 118, but the bolt 118 may be a knob bolt.

[Third embodiment]
A third embodiment of the present invention will be described below.
First, the whole structure of a threshing apparatus will be described with reference to FIG. In the following description, in the threshing apparatus, the conveyance direction of the threshing product is the front-rear direction, the conveyance start end direction is the front direction, and the conveyance end side direction is the rear direction.

As shown in FIG. 16, the threshing apparatus threshs and sorts the cereal straw. The threshing apparatus includes a threshing unit 201 and a sorting unit 202. Incidentally, the threshing apparatus is provided in the ordinary combine in this embodiment, but may be provided in the self-decomposing combine.

The threshing unit 201 threshs the cereal. The threshing unit 201 includes a handling cylinder 203 for threshing threshing. The handling cylinder 203 is rotatably supported by the handling chamber 204 via a rotation shaft 203a in the front-rear direction. In addition, the threshing unit 201 is provided with a receiving net 205 for leaking the threshing processed product by the handling drum 203.

The sorting unit 202 sorts the threshing processed product (the threshing processed product leaked from the receiving net 205). The sorting unit 202 includes a swing sorting device 206, a red pepper 207, a first collecting unit 208, and a second collecting unit 209. The details of the red pepper 207 will be described later.

The swing sorting device 206 swings and sorts the threshing processed product (the threshing processed product leaked from the receiving net 205). Then, the swing sorter 206 includes a sheave case 210, a first grain pan 211, a first sieve line 212 and a second sieve line 213, a second grain pan 214, a chaff sheave 215, a first Strollac 216, a first Two Strollacs 217 and a third Strollac 218 and a Glen sieve 219 are provided. The first sieving wire 212 and the second sieving wire 213, and the first Strollac 216, the second Strollac 217 and the third Strollac 218 will be described in detail later.

The sheave case 210 is configured to be swingable. That is, the sheave case 210 is swung back and forth by the eccentric cam type swinging mechanism 220. The sheave case 210 includes a first gren pan 211, a first sieving line 212 and a second sieving line 213, a second gren pan 214, a chaff sheave 215, a first strollac 216, a second stroller 217, and a second Three Strollacs 218 and Glen sieves 219 are provided. Accordingly, the first Glen pan 211, the first sieve line 212 and the second sieve line 213, the second Glen pan 214, the chaff sheave 215, the first Strollac 216, the second Strollac 217 and the third Strollac 218, and the Glen Sheave 219 are: Swings in the front-rear direction together with the sheave case 210.

The first gren pan 211 sorts the threshing product by specific gravity difference. In other words, the first gren pan 211 swings in the front-rear direction together with the sheave case 210, so that the threshing product is conveyed in the backward direction, and is divided into upper and lower layers such as sawdust having a small specific gravity and grains having a large specific gravity. To do. The first gren pan 211 is formed in a substantially wave shape in a side view. A first sieving line 212 is fixed to a waveform portion located on the most rear end side among the waveform portions in the first Glen pan 211. The first gren pan 211 is provided on the front end side of the sheave case 210 (only the front end portion of the sheave case 210). That is, the first Glen pan 211 is formed shorter than the second Glen pan 214 in a side view.

The chaff sheave 215 sorts out the processed threshing product. That is, the chaff sheave 215 is provided with a plurality of angle-adjustable chaff flip plates 215a that are aligned at a predetermined interval in the front-rear direction. Then, the chaff sheave 215 swings in the front-rear direction together with the sheave case 210, thereby conveying the swarf and the like that have not leaked backward while allowing grains and the like to leak from between the cha-flip plates 215a. The angle of the char flip plate 215a is adjusted by an angle adjusting unit (not shown).

Further, the chaff sheave 215 is inclined upward toward the rear end in a side view. The chaff sheave 215 is provided behind the second gren pan 214. That is, the chaff sheave 215 is provided below the first sieve line 212 and the second sieve line 213. In other words, the chaff sheave 215 is provided behind the tang 207 in the sheave case 210.

The second glen pan 214 sorts the threshing product by specific gravity. In other words, the second glen pan 214 swings in the front-rear direction together with the sheave case 210, and stratifies the threshing processed product in the vertical direction while conveying the threshing processed product in the rearward direction, such as sawdust having a small specific gravity and grains having a large specific gravity. To do. Further, the second Glen pan 214 is formed in a substantially wave shape in a side view. A corrugated portion 214 a deeper than the other corrugated portions of the second Glen pan 214 is formed on the front end side of the second Glen pan 214. That is, the corrugated portion 214 a is formed at the front end portion (front end portion) of the second gren pan 214.

The second gren pan 214 is provided below the first gren pan 211. That is, a first Glen pan 211 different from the second Glen pan 214 is provided above the second Glen pan 214. Further, the second Glen pan 214 and the chaff sheave 215 are arranged at substantially the same height. The rear end portion of the second gren pan 214 and the front end portion of the chaff sheave 215 (the chi-flip plate 215a positioned closest to the front end side) overlap in plan view.

Glen sieve 219 sorts out the processed threshing product. In other words, the Glen Sheave 219 conveys the grain with branches and the like that has not leaked backwards together with the sawdust and the like as the second thing while causing the single grain to leak as the first thing. In addition, the Glen sheave 219 is provided behind the Tang Dynasty 207 and below the chaff sheave 215. And the convex part 219a which protrudes upwards is provided in the front end side of the Glen sheave 219. For example, the convex portion 219a is configured by a plate-like member that is bent so as to protrude upward (substantially mountain-shaped).

The first recovery unit 208 recovers the single grain as the first thing. The first recovery unit 208 is provided below the front portion of the sheave case 210.

The second recovery unit 209 recovers the grain with branch infarction as the second thing. The second recovery part 209 is provided below the rear part of the sheave case 210.

Next, the Kara 207 will be described with reference to FIGS.

As shown in FIGS. 17 to 20, the red pepper 207 includes a blade member 221, a fan case 222, a first air passage 223, and a second air passage 224.

The blade member 221 is rotatably supported by the fan case 222 via a horizontal rotation shaft 221a. That is, the blade member 221 is configured to be rotatable around the axis X2 in the left-right direction. In addition, the rotation direction of the blade member 221 is counterclockwise in the side view (the rotation direction A2 shown in FIG. 2). And the blade member 221 is formed in the substantially circular arc shape recessed in the rotation direction upper side (direction opposite to rotation direction A2) in side view. That is, the blade member 221 is formed in a substantially bow shape that swells toward the upper side in the rotational direction (side opposite to the rotational direction A2) in a side view. In the present embodiment, a plurality of (for example, four) blade members 221 are arranged at equal angular intervals (for example, 90 degrees) around the axis X2 in the left-right direction in a side view. Further, the blade member 221 is fixed to the rotating shaft 221a via a plurality of (for example, two) flange portions 221b formed in a substantially circular shape in a side view.

The fan case 222 is configured to cover the blade member 221. The left and right sides of the fan case 222 are provided with suction ports 222a for sucking outside air.

The suction port 222a is covered with an adjustment plate 225 so that its opening degree can be adjusted. The left adjustment plate 225 and the right adjustment plate 225 are connected by a single link rod 226. That is, the left and right adjustment plates 225 are configured to be swingable with the link rod 226 as a swing fulcrum. The left adjustment plate 225 is provided with a swing operation portion 227 for swinging the left and right adjustment plates 225.

The swing operation unit 227 includes a guide hole 228 formed in the left adjustment plate 225, a guide shaft 229 inserted into the guide hole 228, and a nut 230 screwed into the guide shaft 229. Thus, when the left adjustment plate 225 swings along the guide shaft 229 via the guide hole 228, the right adjustment plate 225 also swings via the link rod 226. As a result, the opening degree of the left and right suction ports 222a is changed. That is, when the adjustment plates 225 on the left and right sides swing via the link rod 226, the opening degree of the suction ports 222a on the left and right sides is changed. In addition, by tightening the nut 230, the left adjustment plate 225 can be fixed at an arbitrary swinging position.

In the first air passage 223, the sorting air supplied to the lower part of the sheave case 210 flows. The first air passage 223 is disposed below the tongue 207 and below the sheave case 210. That is, the first air path 223 communicates with the lower part on the rear end side of the fan case 222. In addition, a guide plate 233 is provided below the front side of the chaff sheave 215 to guide the sorted air in the first air passage 223 upward in the rear side.

The guide plate 233 is inclined upward toward the rear end in a side view. The guide plate 233 has an inclination angle α1 of an angle adjustment range β of a chi-flip plate (hereinafter referred to as “front-most end cha-flip plate”) 215a located on the most front end side among the plurality of char-flip plates 215a. Substantially coincides with the central angle α2. That is, the inclination angle α1 of the guide plate 233 and the central angle α2 in the angle adjustment range β of the front-most-side char flip plate 215a are substantially the same angle. In addition, it is preferable that the inclination angle α1 of the guide plate 233 and the central angle α2 in the angle adjustment range β of the front-most-side cha-flip plate 215a completely coincide (is the same angle).

In the second air passage 224, the sorting air supplied to the upper part of the sheave case 210 flows. The second air passage 224 is disposed at the top of the tang 207 and in front of the sheave case 210. That is, the second air passage 224 communicates with the upper part on the front end side of the fan case 222. The second air passage 224 is formed so as to extend in the forward direction and to make a U-turn in the backward direction, and supplies the selection air to the front end side of the sheave case 210. The upper part of the second air passage 224 is formed by an upward inclined air passage 224a that inclines upward on the rear end side. The sheave case 210 is formed with a third air passage 232 (to be described later in detail) through which the selected air from the second air passage 224 flows.

A power transmission shaft 231 to which power from the engine E is transmitted is disposed above the second air passage 224 (see FIG. 21). That is, the power transmission shaft 231 is disposed at the upper part on the front end side of the upward inclined air passage 224a of the second air passage 224. Note that the power of the power transmission shaft 231 is transmitted to the handling cylinder 203, the tang 207, and the like.

The third air passage 232 is formed between the first gren pan 211 and the second gren pan 214. The third air passage 232 is formed in a substantially V shape in a side view by a downward inclined air passage 232a inclined downward at the rear end side and an upward inclined air passage 232b inclined upward at the rear end side. Yes.

The inlet portion of the third air passage 232 (downward inclined air passage 232a) is provided across the front end side vertical wall (front wall) and the front end side lower wall of the sheave case 210. The inlet portion of the third air passage 232 (downward inclined air passage 232a) may be provided only on the front end side vertical wall (front wall) of the sheave case 210, or the front end side lower side of the sheave case 210. It may be provided only on the wall.

Further, the outlet of the third air passage 232 (upwardly inclined air passage 232b) is disposed below the rear end side of the first gren pan 211. And the 2nd Glen pan 214 is provided in the lower part of the exit part of the 3rd air path 232 (upward inclination air path 232b). In particular, in the present embodiment, the front end portion of the second gren pan 214 forms a part of the third air passage 232 (the bottom surface of the upward inclined air passage 232b).

The inclination angle of the upward inclined air passage 232b of the third air passage 232 and the inclination angle of the first sieving line 212 and / or the second sieving line 213 are substantially the same. Further, the inclination angle of the upward inclined air passage 232b of the third air passage 232 and the inclination angle of the upward inclined air passage 224a of the second air passage 224 are substantially the same.

According to the above configuration, the sorted wind is distributed to the lower part and the upper part of the sheave case 210 by the first air path 223 and the second air path 224 and supplied, so that the sorted air is sent from the lower part of the sheave case 210 to the upper part. Can be spread. Then, the sorting air can be spread from the front end side to the rear end side of the sheave case 210 by supplying the sorting air to the front end side of the sheave case 210 through the second air passage 224. Then, as a result of the second air passage 224 being formed to make a U-turn, the air passage length of the second air passage 224 becomes longer, and therefore the flow of the selected air tends to be laminar. Therefore, it is possible to supply the sorting air having a stable flow.

Next, the first sieve line 212 and the second sieve line 213 will be described with reference to FIGS.

As shown in FIGS. 22 and 23, the first sieving line 212 and the second sieving line 213 are juxtaposed in the front-rear direction at the rear end portion of the first gren pan 211. The first sieving line 212 and the second sieving line 213 are arranged above the second gren pan 214 and above the chaff sheave 215. That is, of the first sieving line 212 and the second sieving line 213, the second sieving line 213 is disposed above the chaff sheave 215 and overlaps the chaff sheave 215 in plan view. Further, a predetermined gap O is formed between the rear end portion of the first sieving line 212 and the front end portion of the second sieving line 213.

The gap O overlaps with the front end side of the chaff sheave 215 in plan view. That is, the gap O overlaps with the rear end portion of the second Glen pan 214 in plan view.

In place of the first sieving line 212 and the second sieving line 213, for example, a leakage selection unit other than the sieving line such as Strollac, sheet-metal punching type chaff sheave, mesh-like or sheet-metal punching type grain sheave may be employed. it can. However, from the viewpoint of increasing the amount of leakage from the leakage selection unit, it is preferable to employ a sieve line.

The first sieve line 212 is formed in a substantially wave shape in a side view. For example, the 1st sieve line 212 is comprised by the piano wire. And the 1st sieve line 212 inclines in the rear end side rise in the side view. The rear end side of the first sieve line 212 is provided at a position higher than the front end side of the second sieve line 213. The first sieving line 212 is provided at the rear end of the first gren pan 211. That is, the first sieving line 212 is fixed to the rear end portion of the first gren pan 211 (the waveform portion located closest to the rear end side).

The second sieving line 213 is formed in a substantially wave shape in a side view. For example, the second sieving wire 213 is composed of a piano wire. And the 2nd sieve line 213 inclines in the rear end side raise in the side view. The inclination angle of the second sieving line 213 is larger than the inclination angle of the first sieving line 212. The second sieving line 213 is provided at a position higher than the first sieving line 212. Then, at least a part of the second sieve line 213 protrudes upward from the upper side portion of the sheave case 210. The second sieving line 213 is disposed above the front end side of the chaff sheave 215, and at least a part thereof overlaps the front end side of the chaff sheave 215 in plan view. Furthermore, the second sieving line 213 is disposed above the first recovery unit 208, and at least a part thereof overlaps with the first recovery unit 208 in plan view.

According to the above configuration, the first sieving line 212 and the second sieving line 213 are formed in a substantially wave shape, so that the first sieving line 212 and the second sieving line 213 feed the threshing product. Can be granted. Therefore, the first sieving line 212 and the second sieving line 213 can be selected while smoothly transporting the threshing product from the first gren pan 211.

In addition, since the first sieve line 212 and the second sieve line 213 extend above the chaff sheave 215, the chaff sheave 215 has the threshing processed product roughly selected by the first sieve line 212 and the second sieve line 213. Supplied. Therefore, the sorting load applied to the chaff sheave 215 can be reduced. If the sorting load applied to the chaff sheave 215 can be reduced, a large amount of crops can be sorted without increasing the size of the chaff sheave 215 and thus the threshing device.

Next, the first Strollac 216, the second Strollac 217, and the third Strollac 218 will be described with reference to FIGS.

As shown in FIGS. 24 to 26, the first Strollac 216 includes a plurality of first rack plates 216a aligned with a predetermined gap G1 in the left-right direction. The first Strollac 216 is provided at the rear end of the chaff sheave 215. The rear end portion of the first Strollac 216 is disposed so as to overlap the second Strollac 217 (second rack plate fixing member 217b) in plan view.

The second Strollac 217 is provided behind the first Strollac 216. The second Strollac 217 includes a plurality of second rack plates 217a aligned at a predetermined interval G2 in the left-right direction, and a second rack plate fixing member to which front end portions of the plurality of second rack plates 217a are fixed. 217b and a second sieving wire 217c is provided between the adjacent second rack plates 217a. The rear end portion of the second Strollac 217 (second rack plate 217a) is disposed so as to overlap the front end portion of the third Strollac 218 (third rack plate fixing member 218b) in plan view.

A second sieve wire 217c is fixed to the second rack plate fixing member 217b. That is, the second rack plate 217a is fixed to the lower surface of the second rack plate fixing member 217b, and the second sieve wire 217c is fixed to the upper surface of the second rack plate fixing member 217b.

The third Strollac 218 is provided behind the second Strollac 217. The third Strollac 218 includes a plurality of third rack plates 218a aligned at a predetermined interval G3 in the left-right direction, and a third rack plate fixing member to which front end portions of the plurality of third rack plates 218a are fixed. 218b and a third sieving wire 218c between the adjacent third rack plates 218a.

A third sieve wire 218c is fixed to the third rack plate fixing member 218b. That is, the third rack plate 218a is fixed to the lower surface of the third rack plate fixing member 218b, and the third sieve wire 218c is fixed to the upper surface of the third rack plate fixing member 218b.

Here, as shown in FIG. 24, the second Strollac 217 and the third Strollac 218 are longer in the front-rear direction than the first Strollac 216. And the 2nd Strollac 217 and the 3rd Strollac 218 are comprised by the same member. Moreover, the 2nd Strollac 217 and the 3rd Strollac 218 are arrange | positioned at the same height. The first Strollac 216 is disposed above the second Strollac 217 and the third Strollac 218. That is, among the first Strollac 216, the second Strollac 217, and the third Strollac 218, the first Strollac 216 is disposed highest.

Moreover, as shown in FIG. 25, the 1st Strollac 216 and the 2nd Strollac 217 are arrange | positioned so that it may mutually overlap in planar view. The second Strollac 217 and the third Strollac 218 are arranged so as to overlap each other in plan view. Further, the interval G2 between the plurality of second rack plates 217a and the interval G3 between the plurality of third rack plates 218a are the same. The interval G1 between the plurality of first rack plates 216a is larger than the interval G2 between the plurality of second rack plates 217a and the interval G3 between the plurality of third rack plates 218a.

According to the configuration as described above, the threshing processed product from the rear end portion of the chaff sheave 215 falls from the first Strollac 216 to the second Strollac 217, and the lump of the threshing processed product is formed by the impact at the time of the fall. Unravel. Then, the loosened threshing product is sorted by the third Strollac 218 in addition to the second Strollac 217. Therefore, the recovery rate of the grain can be improved for the threshing processed product from the rear end portion of the chaff sheave 215.

[Fourth embodiment]
A fourth embodiment of the present invention will be described below.

[Overall configuration of combine]

Hereinafter, an embodiment in which the present invention is applied to a wheel type combine will be described with reference to the drawings. As shown in FIG. 27, the combine 301 is an all-throw-in type combine that harvests crops such as rice and wheat. The combine 301 includes a traveling unit 302 that supports the aircraft, a driving unit 303 that is positioned above the traveling unit 302, a reaping unit 304 that is positioned in front of the driving unit 303, and a threshing unit 305 that is positioned behind the aircraft. And the storage part 306 located above the threshing part 305 is provided.

The traveling unit 302 includes a pair of left and right front wheels 307 and a rear wheel 308 that is a steering wheel, and a traveling transmission (not shown) that transmits power from the engine to the pair of left and right front wheels 307 and rear wheel 308. ing. The traveling transmission is provided with a hydrostatic continuously variable transmission (corresponding to “transmission”, “first working part”, hereinafter referred to as “HST”).

The cutting unit 304 is provided with a cutting blade 360 for cutting a crop stalk. The cutting unit 304 swings around the swing fulcrum P due to expansion and contraction of a hydraulic cylinder (not shown) and moves up and down. Further, the cutting unit 304 is provided with a scraping reel 361 that causes a crop to rotate by rotating around a left and right axis (not shown) and scrapes the trimmed stems backward. The take-up reel 361 swings around the swing fulcrum Q by the expansion and contraction of a hydraulic cylinder (not shown) and moves up and down.

[About the driving unit]

As shown in FIGS. 28 and 29, the driver 303 is supported by a driver's seat 310 disposed at the center of the fuselage and a lever box 313 disposed on the right side of the driver's seat 310, and shifts with respect to the HST. A main transmission lever 311 (corresponding to an “operation lever”) capable of commanding an operation and a steering wheel 314 are provided. By operating the steering wheel 314, the rear wheel 308, which is a steered wheel, can be steered.

As shown in FIGS. 28, 30 and 32, a lever guide 350 is formed on the upper surface of the lever box 313. The main transmission lever 311 is inserted into the lever guide 350 and supported inside the lever box 313, and is swung along the lever guide 350. The main transmission lever 311 is located in the vicinity of the driver's seat 310 (slightly forward right of the operator D). In the lever guide 350, a road traveling area D1, a work area D2, and a reverse area R are formed in order from the front. The lever box 313 is configured such that the lever guide 350 is positioned at substantially the same height as the seat surface 318 of the driver's seat 310.

As shown in FIG. 30, when the combine 301 is traveled on a road other than the farm field, the main transmission lever 311 is operated to be positioned in the road travel area D1. When the harvesting operation is performed on the combine 301 in the field, the main transmission lever 311 is operated to be positioned in the work area D2. When the combine 301 is moved backward, the main transmission lever 311 is operated to be positioned in the reverse region R. In the road traveling area D1 and the work area D2, the traveling speed of the aircraft increases as the main shift lever 311 is tilted forward. In the reverse region R, the speed at which the aircraft reverses increases as the main transmission lever 311 is tilted backward. In this way, the traveling speed of the airframe is adjusted by pushing and pulling the main transmission lever 311 back and forth.

The upper surface of the lever box 313 is formed so as to curve upward, and the work area D2 is located at the topmost part of the lever box 313. As described above, the main transmission lever 311 is lowered as it is operated forward (position far from the body), and the arm can be extended as compared with the case where the upper surface of the lever box 313 is formed in a horizontal plane. , Do not become cramped. Furthermore, as shown in FIG. 28, the work area D2 that is frequently used is positioned slightly in front of the operator, so that when the main transmission lever 311 is operated to the work area D2, the cutting work can be performed in an easy posture. .

As shown in FIG. 30, the main transmission lever 311 includes a rocker switch 334 (corresponding to “first command input means”) and a rocker switch 337 (corresponding to “second command input means”). ing. By an input operation of the rocker switch 334, an operation is commanded to the hydraulic cylinder that moves the mowing unit 304 up and down. That is, the hydraulic cylinder that raises and lowers the cutting unit 304 constitutes a cutting lifting control unit (corresponding to a “second working unit”). Further, an operation is commanded to the hydraulic cylinder that raises and lowers the scraping reel 361 by an input operation of the rocker switch 337. That is, the hydraulic cylinder that raises and lowers the scraping reel 361 constitutes a reel raising / lowering control unit (corresponding to a “third working unit”).

[About the shape of the main transmission lever]

The main transmission lever 311 is made of resin, and is supported by the lever box 313 via a metal rod 321 as shown in FIG. The main transmission lever 311 includes a grip portion 322 and a shaft portion 323 that supports the grip portion 322.

As shown in FIG. 31, the shaft portion 323 is provided with an insertion hole 346 through which the rocker switch 334 and the electric wiring 345 of the rocker switch 337 are inserted, and an insertion hole 347 through which the rod 321 is inserted. As shown in FIG. 33, the insertion hole 346 for the electrical wiring 345 and the insertion hole 347 for the rod 321 are provided in an overlapping state.

A predetermined clearance 344 is provided in the vertical direction between the bottom surface of the shaft portion 323 and the lever guide 350 of the lever box 313 to avoid interference between the main transmission lever 311 and the lever box 313. A lower end bulging portion 343 bulging in the outer peripheral direction is formed at the lower end portion of the shaft portion 323. Even if the clearance 344 is large, the lower end bulging portion 343 prevents the electric wiring 345 and the rod 321 from being completely visible from the clearance 344. That is, even when the assembly accuracy is not set very high when the main transmission lever 311 is assembled to the rod 321 by increasing the clearance 344, the assembly is good in appearance.

As shown in FIG. 30, the grip portion 322 is formed in a horizontally elongated shape that is rounded as a whole. The grip portion 322 includes a first surface 324, a second surface 326 that is a surface different from the first surface 324, and an upper surface 327 that is a surface different from the first surface 324 and the second surface 326. And a back surface 331 located on the opposite side of the second surface 326. The surface of the grip portion 322 has a rounded shape except for the first surface 324. For this reason, when the index finger f, the middle finger m, the ring finger r, and the little finger p are positioned on the second surface 326 or the upper surface 327, the hand H is easily adapted to the main transmission lever 311.

Further, the grip portion 322 is formed to have a lateral width wider than the width of the hand H in plan view. That is, the grip portion 322 is formed such that the width in the direction along the second surface 326 is larger than the width in the direction along the first surface 324.

The first surface 324 is a surface on which the thumb t is disposed. As shown in FIGS. 28, 30 and 31, the first surface 324 is formed in a substantially planar shape, and in a plan view, the first surface 324 is positioned forward as it moves away from the left / right center line X of the driver's seat 310 in the left direction. That is, in other words, the first surface 324 is inclined so as to be positioned forward as the distance from the operator D increases in plan view. The boundary portion between the first surface 324 and the second surface 326, the boundary portion between the first surface 324 and the top surface 327, and the boundary portion between the first surface 324 and the back surface 331 are light and square. Is formed. Note that the rocker switch 334 described above is provided on the first surface 324.

A cutout portion 325 is formed in the portion of the first surface 324 that extends from the portion closer to the operator D to the back surface 331. The notch 325 is formed in a portion of the first surface 324 that is closer to the operator D. The notch 325 is formed in a triangular shape that expands toward the first surface 324 from the back surface 331 side, and has a rounded shape that curves toward the lever center side of the main transmission lever 311 according to the shape of the thumb t. It is formed in a different shape. Accordingly, when the thumb t is swung around the base to operate the rocker switch 334, the notch 325 serves as a guide for the thumb t.

The second surface 326 is a surface on which the index finger f, middle finger m, ring finger r, and little finger p are arranged. The second surface 326 is formed in a rounded shape as a whole, and inclines so as to be located rearward as it moves away from the left and right center line X in the plan view. That is, the second surface 326 is inclined so as to be positioned rearward as it is away from the operator D in plan view. The second surface 326 and the upper surface 327 are formed to be continuous while being slightly rounded. Note that the above-described rocker switch 337 is provided on the second surface 326.

As shown in FIG. 28, an outer bulging portion 328, a recessed portion 329, and an inner bulging portion 330 are formed on the second surface 326 in order of approaching the left-right center line X.

As shown in FIGS. 28, 29, and 31, the outer bulging portion 328 has an upper end portion (second surface 326) of the second surface 326 at the end portion of the grip portion 322 far from the operator D. And the upper surface 327). The upper end portion of the outer bulging portion 328 is formed continuously with the front end portion of the upper surface 327. The outer bulging portion 328 is formed in an arc shape that curves forward (precisely, slightly diagonally right forward so as to be away from the body of the operator D) in plan view. When placing the hand H on the main transmission lever 311, the outer bulge portion 328 can be bent and hooked with the ring finger r or the little finger p, and the hand H can be prevented from slipping when the main transmission lever 311 is pulled. .

The recessed portion 329 is continuously formed on the left side of the outer bulging portion 328 as shown in FIGS. The recessed portion 329 has a shape that is recessed toward the back surface 331 from the upper end portion of the upper surface 327 to the lower end portion of the second surface 326. An index finger f can be positioned in the recessed portion 329, which is a clue when the main transmission lever 311 is gripped.

As shown in FIGS. 28, 29, and 31, the inner bulging portion 330 is formed continuously on the left side of the recessed portion 329. The inner bulging portion 330 is formed by bulging a portion extending between the first surface 324 and the second surface 326 forward (precisely, slightly diagonally forward to the right so as to be away from the body of the operator D). Has been. The upper end portion of the inner bulging portion 330 is formed continuously with the front end portion of the upper surface 327. The inner bulging portion 330 has a shape protruding forward when viewed from the front. The index finger f can be hooked on the inner bulging portion 330, and the hand H can be prevented from slipping when the main transmission lever 311 is pulled.

By configuring the outer bulging portion 328, the recessed portion 329, and the inner bulging portion 330 in this manner, these become clues when the main transmission lever 311 is gripped, and the index finger f, middle finger m, ring finger r, little finger p is firmly positioned and the position of the hand H is stabilized. Further, since the position of the hand H is stabilized, the main transmission lever 311 can be firmly held, and the operability of the main transmission lever 311 is improved.

The upper surface 327 is a surface on which the palm P1 is mainly placed. As shown in FIGS. 29 and 31, the upper surface 327 is inclined so as to be positioned downward as it moves away from the right and left center line X in the aircraft. That is, the upper surface 327 is inclined so as to be positioned downward as it is away from the operator D. A boundary portion between the upper surface 327 and the rear surface 331 is formed to be continuous while being rounded.

The rear surface 331 is a surface on which the palm P1 is mainly abutted when the main transmission lever 311 is pushed. As shown in FIG. 30, the back surface 331 is rounded so as to be slightly curved toward the driver's seat 310, and is formed adjacent to the top surface 327 and the first surface 324, and It is formed on the opposite side of the surface 326. As shown in FIG. 28, the back surface 331 is inclined so as to be positioned rearward as it moves away from the right and left center line X in the right direction. The vicinity of the lower end portion of the back surface 331 is formed in a substantially flat shape facing diagonally left rear upward. The end of the grip portion 322 far from the driver's seat 310, that is, the boundary portion between the second surface 326, the upper surface 327, and the rear surface 331, is formed in a shape that bulges in a substantially hemispherical shape toward the right rear side Has been.

In addition, the grip part 322 is formed with a split surface (not shown) at a position avoiding the portion where the rod 321 is inserted. The grip portion 322 can be divided into two members by a split surface. When the grip portion 322 is divided, maintenance of the electrical wiring 345 and the rod 321 housed in the grip portion 322 can be easily performed.

[About switch layout]

The rocker switch 334 is provided on the first surface 324 as shown in FIGS. 30 to 32. The rocker switch 334 is attached so as to be slightly lifted from the first surface 324 through a resin base 335. The rocker switch 334 is formed on the side of the grip portion 322 that is closer to the operator D. The rocker switch 334 includes one knob 334A and the other knob 334B formed continuously with the one knob 334A. The rocker switch 334 is a momentary switch, and is configured to automatically return to the neutral position when the pressure on one knob 334A or the other knob 334B is released.

As shown in FIG. 30, the rocker switch 334 moves forward from the lower side toward the upper side when at least the main transmission lever 311 is positioned in the front area (the area used during normal cutting work) of the work area D2. One knob 334A is arranged in a state of being positioned above the other knob 334B so as to fall down. In the rocker switch 334, the direction in which the one knob 334A and the other knob 334B are arranged is a tangential direction of the circumference centered on the rear apex of the notch 325 (substantially triangular) (the swing locus of the tip of the thumb t). It is inclined so as to be along the tangential direction at the approximate center of the arc. That is, the rocker switch 334 is arranged so that the inclination direction of the rocker switch 334 is along the swinging direction of the thumb t. For this reason, the movement which operates one knob 334A or the other knob 334B with thumb t can be performed easily. In particular, in a state where the main transmission lever 311 is positioned in the area on the front side of the work area D2 (ordinary mowing work area) and the front of the wrist L is slightly bent forward, the rocker switch 334 is directed upward from below. Accordingly, the thumb t does not become unreasonable during the swinging operation, and the rocker switch 334 is easy to operate.

When one knob 334A is swung by pressing, the cutting part 304 is raised, and when the other knob 334B is swung by pressing, the cutting part 304 is lowered. That is, when one knob 334A is pressed, the rocker switch 334 inputs an operation command to the cutting unit 304, and when the other knob 334B is pressed, the command when the one knob 334A is pressed to the cutting unit 304 is Are configured to input commands for conflicting operations. Further, when the pressing of the one knob 334A or the other knob 334B is released, the raising and lowering of the cutting unit 304 is stopped.

Further, the raising of the cutting unit 304 is realized by the operation of the knob 334A located above, and the lowering of the cutting unit 304 is realized by the knob 334B located below, so that the raising and lowering of the cutting unit 304 is performed. The operation and the operation of the rocker switch 334 are sensuously linked, so that quick selection of the

knobs

334A and 334B and a selection mistake between the knob 334A and the knob 334B hardly occur.

As shown in FIG. 31, the rocker switch 337 is disposed at a position slightly distant from the outer bulging portion 328 on the second surface 326 (a position slightly distant from the upper surface 327). That is, the rocker switch 337 is disposed at a position that is difficult to reach when the middle finger m and the ring finger r are bent slightly, but is sufficiently reached when the middle finger m and the ring finger r are consciously extended. The rocker switch 337 is attached so as to be slightly lifted from the second surface 326 via a resin base 338. The rocker switch 337 is formed on the side of the grip portion 322 that is farther from the operator D. The rocker switch 337 includes one knob 337A and the other knob 337B formed continuously to the one knob 337A.

As shown in FIG. 30, the rocker switch 337 is disposed in an inclined state so that one knob 337A is positioned above the other knob 337B. The rocker switch 337 is inclined along the inclination direction of the upper surface 327. The rocker switch 337 is a momentary switch, and is configured to automatically return to the neutral position when the pressure on one knob 337A or the other knob 337B is released.

When one knob 337A is swung by pressing, the scraping reel 361 is raised. When the other knob 337B is swung by pressing, the scraping reel 361 is lowered. In other words, when one knob 337A is pressed, the rocker switch 337 inputs an operation command to the scraping reel 361, and when the other knob 337B is pressed, when the one knob 337A is pressed against the scraping reel 361. It is configured to input a command for an operation that is contrary to the command. Further, when the pressing of one knob 337A or the other knob 337B is released, the raising and lowering of the scraping reel 361 is stopped.

Further, the raising of the scraping reel 361 (the operation of approaching the body of the operator D) is realized by the operation of the knob 337A located on the side close to the body of the operator D, and the lowering of the scraping reel 361 (the operator) The operation of moving away from the body of D) is realized by the knob 337B located on the side far from the body of the operator D, so that the raising and lowering operation of the scraping reel 361 and the operation of the rocker switch 337 are sensuously linked. Thus, quick selection of the

knobs

337A and 337B and selection mistake between the

knobs

337A and 337B are unlikely to occur.

[How to operate the main transmission lever 311]

When work is performed on the farm field, the main transmission lever 311 is positioned and operated in the work area D2.

When accelerating the airframe, the main transmission lever 311 is pushed forward by pushing the back 331 forward with the palm P1. At this time, it is not necessary to apply much force to the thumb t, the index finger f, the middle finger m, the ring finger r, and the little finger p. Therefore, the operation of the rocker switch 334 with the thumb t and the operation of the rocker switch 337 with the middle finger m and the ring finger r. Is possible.

On the other hand, when decelerating the aircraft, the main transmission lever 311 is pulled backward by hooking the index finger f, middle finger m, ring finger r, and little finger p on the second surface 326 and pulling it. At this time, since it is not necessary to apply much force to the thumb t, the middle finger m, and the ring finger r, it is possible to operate the rocker switch 334 with the thumb t and the rocker switch 337 with the middle finger m and the ring finger r. . At this time, the rocker switch 337 is arranged on the second surface 326 so that it is difficult to reach when the middle finger m and the ring finger r are bent slightly, but is disposed at a position that can be reached when the middle finger m and the ring finger r are consciously extended. It is possible to prevent the rocker switch 337 from being erroneously operated when the shift lever 311 is pulled.

Accordingly, while pushing or pulling the main speed change lever 311, the rocker switch 334 is operated with the thumb t while the body is accelerated or decelerated, and the cutting unit 304 is moved up and down, or the rocker switch 337 is moved with the middle finger m and the ring finger r. The scraping reel 361 can be moved up and down by operating.

For example, when harvesting a fallen crop, the cutting height of the crop stalk by the cutting blade 360 of the cutting unit 304 and the scraping reel are adjusted while decelerating the forward speed of the aircraft according to the fall state of the crop. It is preferable that the height of the scraping action of the stalks cut by 361 can be appropriately changed. With the main transmission lever 311 having this configuration, such a work can be easily performed by one-handed operation.

When switching between traveling on a road other than the field, traveling during work on the field, and reverse, the main transmission lever 311 is moved between the road traveling area D1, the work area D2, and the reverse area R. The

When moving the main transmission lever 311 from the road traveling area D1 to the work area D2 and when moving the reverse transmission area R to the work area D2, the main transmission lever 311 is pushed leftward. At this time, since the index finger f can be hooked on the inner bulging portion 330, the index finger f does not slip. Moreover, it becomes easy to apply force by grasping the outer bulging portion 328 with the ring finger r and the little finger p.

When the main speed change lever 311 is moved from the work area D2 to the reverse area R and when the main speed change lever 311 is moved from the work area D2 to the road travel area D1, the main speed change lever 311 is pushed rightward. At this time, since the base of the thumb t can be hooked on the notch 325, the thumb t can be prevented from slipping. Moreover, it becomes easy to apply force by grasping the outer bulging portion 328 with the ring finger r and the little finger p.

[Another embodiment of the fourth embodiment]

(1) In the above-described fourth embodiment, the second working unit is a cutting lift control unit composed of a hydraulic cylinder that lifts and lowers the cutting unit 304, and the third working unit is a hydraulic pressure that lifts and lowers the scraping reel 361. Although the reel lifting / lowering control unit including a cylinder is used, the present invention is not limited to this. For example, the second working unit may be a reel lifting control unit and the third working unit may be a cutting lifting control unit. Further, the second working unit or the third working unit may be another working unit different from the cutting lifting control unit and the reel lifting control unit.

(2) In the above-described fourth embodiment, the general combine 301 has been described. However, a corn harvester may be used to harvest corn. For example, as shown in FIG. 34, a corn harvester 401 is provided with a harvesting unit 402 that harvests crops in the field, and a rotating chopper 403 that crushes stalks remaining in the field after harvesting the crops. Yes.

The harvesting unit 402 swings around the swing fulcrum P2 by the expansion and contraction of the hydraulic cylinder 404 and moves up and down. The second working unit is a harvesting lift control unit including a hydraulic cylinder 404 that moves the harvesting unit 402 up and down. For example, the harvesting unit 402 may be swung up and down based on an operation of a rocker switch 334 provided in the main transmission lever 311.

In this case, the raising of the harvesting unit 402 is realized by operating a knob located above the rocker switch 334, and the lowering of the harvesting unit 402 is realized by a knob located below the rocker switch 334. It may be. Thereby, the raising / lowering operation of the harvesting unit 402 and the operation of the rocker switch 334 are sensuously linked, so that a knob can be selected quickly and a knob selection error is unlikely to occur.

Rotating chopper 403 is swingable up and down around the left and right axis of the machine body. The rotating chopper 403 swings around the swing fulcrum P3 by the expansion and contraction of the hydraulic cylinder 405 and moves up and down. The third working unit is a rotary chopper lift control unit including a hydraulic cylinder 405 that lifts and lowers the rotary chopper 403. For example, the swing chopper 403 may be moved up and down based on an operation of a rocker switch 337 provided in the main transmission lever 311.

In this case, the rotation of the rotary chopper 403 (operation approaching the operator D's body) is realized by operating a knob located above the rocker switch 337 (side closer to the operator D's body), and the rotary chopper 403 It may be configured that the lowering of 403 (the operation of moving away from the operator D's body) is realized by a knob located below (on the side farther from the operator D's body) of the rocker switch 337. As a result, the lifting / lowering operation of the rotating chopper 403 and the operation of the rocker switch 337 are sensuously linked, so that a knob can be selected quickly and a knob selection error is unlikely to occur.

Here, the second working unit is a harvesting lift control unit composed of a hydraulic cylinder 404 that lifts and lowers the harvesting unit 402, and the third working unit is a rotary chopper lifting / lowering composed of a hydraulic cylinder 405 that lifts and lowers the rotary chopper 403. Although it was set as the control part, it is good also considering a 2nd working part as a rotation chopper raising / lowering control part and a 3rd working part as a harvest raising / lowering control part.

(3) Although the notch 325 is formed in the grip 322 in the above-described fourth embodiment, a grip not having the notch 325 may be used.

(4) The grip portion 322 is formed so that the width in the direction along the second surface 326 is larger than the width in the direction along the first surface 324 in plan view. In plan view, the width in the direction along the first surface 324 may be larger than the width in the direction along the second surface 326.

(5) In the fourth embodiment described above, the upper surface 327 of the grip portion 322 is inclined so as to be positioned downward as it is farther from the operator D, but is not limited thereto. The grip part arrange | positioned in the state where the upper surface is substantially horizontal may be sufficient.

(6) In the fourth embodiment described above, the outer bulging portion 328, the recessed portion 329, and the inner bulging portion 330 are formed in the grip portion 322, but the outer bulging portion 328 and the recessed portion 329 are formed. Moreover, the grip part in which the inner side bulging part 330 is formed arbitrarily may be sufficient.

(7) In the above-described fourth embodiment, the lever guide 350 that guides the main transmission lever 311 is provided at substantially the same height as the seat surface 318 of the driver's seat 310. The seat 310 may be provided at a different height from the seat surface 318.

(8) In the above-described fourth embodiment, the shaft portion 323 of the main transmission lever 311 has an insertion hole 346 for the electric wiring 345 of the rocker switch 334 and the rocker switch 337, and the rod 321 that supports the main transmission lever 311. However, the present invention is not limited to this. An electric wiring 345 arranged around the main transmission lever 311 may be used.

(9) In the fourth embodiment described above, the first surface 324 is inclined so as to be positioned forward as it is farther from the operator D in plan view. The surface may be substantially parallel to the longitudinal direction of the aircraft.

(10) In the fourth embodiment described above, in the grip portion 322, the insertion hole 346 for the electrical wiring 345 and the insertion hole 347 for the rod 321 are provided in an overlapping state. The insertion hole 346 and the insertion hole 347 for the rod 321 do not overlap and may be provided independently.

(11) In the fourth embodiment described above, the lower end bulging portion 343 is formed in the grip portion 322, but a grip portion in which the lower end bulging portion 343 is not formed may be used.

(12) In the fourth embodiment described above, the driving unit 303 is provided with the steering wheel 314. However, instead of the steering wheel 314, another steering support is provided on the steering lever or the like. It may be.

(13) In the fourth embodiment described above, the raising of the cutting unit 304 is realized by the operation of the knob 334A, and the lowering of the cutting unit 304 is realized by the knob 334B. However, the present invention is not limited to this. is not. For example, the configuration in which the raising of the cutting unit 304 is realized by the operation of the knob 334B and the lowering of the cutting unit 304 is realized by the knob 334A may be reversed.

(14) In the above-described fourth embodiment, the raising of the scraping reel 361 is realized by the operation of the knob 337A and the lowering of the scraping reel 361 is realized by the knob 334B. It is not something that can be done. For example, a configuration in which the raising of the scraping reel 361 is realized by the operation of the knob 337B and the lowering of the scraping reel 361 may be realized by the knob 334A.

(15) In the fourth embodiment described above, the first command input means is the rocker switch 334 and the second command input means is the rocker switch 337. However, the present invention is not limited to this. For example, each of the first command input unit and the second command input unit may be two push button switches for instructing the opposite operations. Further, the first command input means and the second command input means may be a single pushbutton switch that performs two different types of commands by a short press operation and a long press operation, respectively.

(16) In the fourth embodiment described above, the main transmission lever 311 has been described as an example of the operation lever. However, the present invention can also be applied to the auxiliary transmission lever.

(17) In the above-described fourth embodiment, the traveling unit 302 is configured by a plurality of wheels, but the traveling unit 302 may be configured by a crawler device.

(18) In the fourth embodiment described above, the example in which the main transmission lever 311 is arranged on the right side of the driver's seat 310 is shown, but it may be arranged on the left side.

(19) In the fourth embodiment described above, the rear wheel 308 is a steered wheel, but the front wheel 307 may be a steered wheel.

The present invention relates to a crawler traveling device equipped in a normal combine having a threshing device that is put into a handling room together with a head side in addition to a combine equipped with a self-throwing threshing device. Is available. In addition to the combine, the present invention can be used for a crawler traveling device mounted on a harvester, a tractor, a backhoe, or a work vehicle such as a transport vehicle that harvests crops other than cereals such as onions and carrots.

1: Crawler travel device

3: Airframe frame

6: Mounting member (reinforcing plate)

6a: Female thread

8: Roller shaft

10: Cutting part

11: Driver's seat

12: Threshing device

17: Mission case

20: Track frame

21: Drive sprocket

22: Tension sprocket

23: Rolling wheel

26: Crawler belt

25: Guide wheel

27: Cross beam

28: Crawler guide

30: Advance / Retreat Mechanism

31: Holding unit

31a: side plate

31b: base

32: Support rod

33: Adjustment screw mechanism

33a: Adjustment screw body

33b: first screw body receiving portion

33c: Second screw body receiving portion

60: Mounting unit

60A: channel member

60B: Boss member

61: Side plate

62: Bottom plate

63: Guide wheel mounting unit

63a: Bracket plate 80: Ball bearing

81: Seal member

82: Breeder

90: Fixing bolt

91: Placing plate 106: Feeder

107: Feeder case

112: Dust absorption fan

113: Motor

114: Breaker

115: Fan case

120: Capture member

121: Round bar (bar-shaped member)

124: Stud bolt (protruding part)

125: Knob nut (fastener)

126: Holding frame (holding member)

170: Top plate

170a: Dust inlet 207: Karatsu

208: First recovery department

210: Sheave case

211: First Glenpan (Glenpan)

212: First sieve line (sieve line, leakage selection part)

213: Second sieve line (sieve line, leakage selection part)
214: Second Glenpan 215: Chaff Seeb

221: Blade member 222: Fan case 223: First air passage

224: Second wind path

232: Third wind path 301: Combine

308: Rear wheel

310: Driver's seat

311: Main transmission lever (operating lever, transmission lever)

313: Lever box

314: Steering wheel

318: bearing surface

321: Rod

322: Grip part

323: Shaft

324: First surface

325: Notch

326: Second surface

327: Upper surface

328: Outside bulge

329: recessed portion

330: Inside bulge

334: Rocker switch (first command input means)

337: Rocker switch (second command input means)

343: Lower end bulge

345: Electrical wiring

346: Insertion hole

347: insertion hole

350: Lever guide 401: Corn harvester 402: Harvesting unit 403: Rotating chopper 404: Hydraulic cylinder (harvest lifting control unit, second working unit)
405: Hydraulic cylinder (rotary chopper lifting control unit, third working unit)

D: Pilot

A: Arm

H: Hand

O: Clearance P: Palm X1: Axis t: Thumb

f: Index finger

m: Middle finger

r: Ring finger

p: little finger

Claims

A track frame that extends in the longitudinal direction of the body and is supported by the body frame, a drive sprocket disposed at the front of the track frame, a tension sprocket disposed at the rear of the track frame, the drive sprocket, and the tension sprocket A crawler traveling device comprising a crawler belt wound around and a plurality of wheels for guiding the crawler belt to the ground,
A crawler provided with a mounting unit extending in the longitudinal direction of the machine body that is detachably mounted on an mounting member provided in the track frame, and the mounting unit supports the rolling wheels arranged in the longitudinal direction of the vehicle body in a plurality of units. Traveling device.
The mounting unit includes a groove-shaped member that extends in the longitudinal direction of the fuselage and opens downward, and a boss member that is disposed at an interval in the longitudinal direction of the fuselage, and the bottom plate portion of the groove-shaped member is bolted to the mounting member. The crawler traveling device according to claim 1, wherein a wheel shaft for mounting the wheel on the boss member is supported.
The crawler traveling device according to claim 2, wherein the attachment member is a reinforcing plate fixed to a frame body constituting the track frame, and a female screw for fixing the bolt is formed on the reinforcing plate.
4. The crawler traveling device according to claim 3, wherein the attachment member includes a plurality of attachment member pieces arranged at intervals in the longitudinal direction of the machine body.
The groove-shaped member is a long member having a U-shaped cross section composed of a bottom plate part contacting the mounting member and a pair of left and right side plate parts extending from each side edge of the bottom plate part, and the boss member is The crawler traveling device according to any one of claims 2 to 4, wherein the crawler traveling device is joined across the pair of left and right side plates.
The said baseplate part has the mounting hole for bolt fixation spaced apart in the front-back direction of a body, and the said boss member is joined in the middle of the space | interval formation direction of the said body of the mounting hole. Crawler travel device.
A support rod extending in the longitudinal direction of the tension sprocket is supported by the track frame so as to be displaceable along the direction in which the track frame extends, the track frame is a cylinder, and the support rod is an inner side of the cylinder. The support rod has an outer cross section that coincides with or substantially coincides with the cross section, and the support rod is guided by the inner surface of the track frame to slide in the track frame, and a bolt for fixing the bottom plate portion to the mounting member by bolts. The crawler traveling device according to claim 6, wherein a length of the attachment member and a length of the bolt are set so that a tip does not enter the track frame and interfere with the support rod.
The said roller shaft has a protrusion part which protrudes from the both ends of the said boss | hub member, The wheel half body which comprises the said roller wheel is being fixed to each protrusion part. Crawler traveling device.
The crawler guide extending in the longitudinal direction of the machine body for guiding the lower side of the crawler belt is bolted to the groove member in a posture sandwiched between the side plate portions of the groove member. The crawler traveling device according to any one of the above.
The crawler traveling device according to any one of claims 1 to 9, wherein a guide wheel that guides an upper side of the crawler belt is attached to the track frame via a bracket.
A feeder case having a dust suction port formed on the top plate, and a feeder that conveys the harvested cereal meal in the feeder case;
A dust suction fan for sucking the dust in the feeder case from the dust suction port and discharging it to the outside;
A capturing member attached to the dust suction port and capturing the cereal cake flowing toward the dust suction fan;
The said capture member is a harvester provided with the some rod-shaped member arrange | positioned so that it may not mutually cross over the said dust suction opening.
The harvesting machine according to claim 11, wherein the plurality of rod-like members are substantially parallel to a feeding direction of the feeder.
The harvesting machine according to claim 11 or 12, wherein the bar-shaped member is a round bar.
The harvesting machine according to any one of claims 11 to 13, wherein the dust suction fan rotates around a left-right axis.
The harvester according to any one of claims 11 to 14, wherein the capturing member is configured to be detachable from the feeder case.
A fan case covering the dust suction fan;
The harvester according to any one of claims 11 to 15, wherein the capturing member is sandwiched and supported by a top plate of the feeder case and a lower end of the fan case.
Protruding portion protruding upward from the top plate,
The harvesting machine according to claim 16, wherein the capturing member and a lower end of the fan case are coupled to the projecting portion by a fastener.
A holding member that holds down the lower end of the fan case from above,
The harvesting machine according to claim 17, wherein the pressing member is coupled to the protruding portion by the fastener together with the fan case and the capturing member.
The harvesting machine according to claim 17 or 18, wherein the fastener is a wing nut or a knob nut.
A motor for driving the dust suction fan;
The harvesting machine according to any one of claims 11 to 19, wherein a breaker for the motor is provided adjacent to the dust suction fan.
A harvester equipped with a threshing device,
In the sheave case of the threshing device, on the conveyance start end side, a gren pan is provided,
A sieve wire is provided at the conveyance terminal portion of the Glen pan,
The sieving line is a harvesting machine formed in a substantially wave shape in a side view.
The harvester according to claim 21, wherein the sieving line is inclined upward toward the conveyance end in a side view.
A plurality of the sieving lines are provided at the conveyance terminal portion of the Glenpan,
The harvesting machine according to claim 21 or 22, wherein the plurality of sieve lines are juxtaposed in the conveying direction in the sheave case.
24. The harvester according to claim 23, wherein, in the plurality of sieving lines, the sieving line on the conveyance end side is provided at a position higher than the sieving line on the conveyance start end side.
25. The harvester according to claim 23 or 24, wherein, in the plurality of sieve lines, a conveyance end side of the sieve line on the conveyance start end side is provided at a position higher than a conveyance start end side of the sieve line on the conveyance end side.
The harvester according to any one of claims 23 to 25, wherein the plurality of sieving lines are inclined upward in the conveyance end side in a side view, and the inclination angle is larger toward the sieving line on the conveyance end side.
A tang that supplies sorting air to the transfer end portion of the grain pan in the sheave case,
27. The predetermined gap is formed between the conveyance end portion of one sieve line adjacent to the conveyance direction in the plurality of sieve lines and the conveyance start end portion of the other sieve line. The harvester according to one item.
In the sheave case, a chaff sheave is provided below the sieving line,
28. The harvester according to claim 27, wherein the gap overlaps with a conveyance start end side of the chaff sheave in a plan view.
In the sheave case, a chaff sheave is provided below the sieving line,
The sieving line on the conveyance end side among the plurality of sieving lines is disposed above the conveyance start end side of the chaff sheave, and at least a part thereof overlaps with the conveyance start end side of the chaff sheave in plan view. The harvester according to any one of 28.
Below the sheave case, a first recovery part is provided,
The sieving line on the conveyance end side among the plurality of sieving lines is disposed above the first recovery part, and at least a part thereof overlaps the first recovery part in plan view. The harvester according to any one of the above.
The harvesting machine according to any one of claims 21 to 30, wherein at least a part of the sieving line protrudes upward from an upper side portion of the sheave case.
A tang that supplies sorting air to the transfer end portion of the grain pan in the sheave case,
The Chinese tang is
A first air passage through which the sorting air supplied to the lower part of the sheave case flows;
A second air passage through which the sorting air supplied to the upper part of the sheave case flows,
32. The harvester according to any one of claims 21 to 31, wherein the second air passage supplies a selection air to a conveyance start end side of the sheave case.
The harvester according to any one of claims 21 to 32, wherein the Glen pan is provided only at a conveyance start end portion of the sheave case.
With a sheave case,
The tang which supplies sorting wind to the sheave case, and the tang
A first air passage through which the sorting air supplied to the lower part of the sheave case flows;
A second air passage through which the sorting air supplied to the upper part of the sheave case flows,
34. The method according to claim 21, wherein the second air passage is formed so as to extend in the direction of the conveyance start end and to make a U-turn in the direction of the conveyance end side, and supplies the sorting air to the conveyance start end side of the sheave case. The harvester according to one item.
The Chinese tang is
A blade member rotatable around an axis in a direction perpendicular to the conveyance direction in plan view;
A fan case covering the blade member,
35. The harvester according to claim 34, wherein the second air passage is in communication with an upper part of the fan case on the conveyance start end side.
36. The harvester according to claim 34 or 35, wherein the sheave case is formed with a third air passage through which the selected air from the second air passage flows.
37. The harvester according to claim 36, wherein the inlet portion of the third air passage is provided on a vertical wall at the conveyance start end side of the sheave case.
38. The harvester according to claim 36 or claim 37, wherein an inlet portion of the third air passage is provided on a lower wall at a conveyance start end side of the sheave case.
With a sheave case,
And Kara for supplying sorting wind to the sheave case,
In the sheave case,
A first gren pan provided on the conveying start end side;
A second Glenpan provided below the first Glenpan;
A leakage selection unit provided at a conveyance terminal portion of the first Glen pan;
A chaff sheave provided on the conveyance end side of the second Glen pan,
The harvesting machine according to any one of claims 21 to 33, wherein the leakage sorting unit is disposed above the second Glen pan and above the chaff sheave.
40. The harvester according to claim 39, wherein the second gren pan and the chaff sheave are arranged at substantially the same height.
41. The harvester according to claim 39 or 40, wherein the chaff sheave is inclined upward in the conveyance end side in a side view.
A first working unit; a second working unit different from the first working unit; and a third working unit different from the first working unit and the second working unit;
In the vicinity of the driver's seat, an operation lever capable of commanding the operation to the first working unit is provided,
A grip portion in which a first surface on which the operator's thumb is positioned and a second surface that is different from the first surface and on which four fingers other than the thumb are positioned are formed on the operation lever. Is provided,
On the first surface, it is possible to command a reciprocal operation with respect to the second working unit, and a reciprocal operation is performed by swinging the thumb around the base while being along the first surface. First command input means for inputting the command is provided,
On the second surface, it is possible to command a contradictory operation to the third working unit, and to input a contradictory operation command by a pressing operation with any of four fingers other than the thumb. Harvester equipped with command input means.
43. The harvester according to claim 42, wherein the first command input means is a rocker switch.
44. The harvester according to claim 42 or 43, wherein the second command input means is a rocker switch.
The grip portion is formed with a top surface that is different from the first surface and the second surface and on which the palm of the operator is placed, and the first command input means includes: 45. The device according to any one of claims 42 to 44, wherein the second command input means is formed on a side portion of the grip portion that is farther from the operator, and is formed on a side portion closer to the driver. Harvesting machine.
46. The harvester according to claim 45, wherein the second command input means is disposed in an inclined state so as to be positioned downward as it is farther from the operator.
47. The harvester according to claim 45 or 46, wherein the upper surface is inclined so as to be positioned downward as the distance from the operator increases.
48. The harvester according to any one of claims 45 to 47, wherein the second command input means is disposed along the direction of the upper surface.
49. The harvester according to any one of claims 45 to 48, wherein the second surface is inclined so as to be positioned rearward as it is farther from the operator in plan view.
The harvester according to any one of claims 45 to 49, wherein the first surface is inclined so as to be positioned forward as the distance from the operator increases in plan view.
The first working unit is a transmission of a traveling transmission;
51. The harvester according to any one of claims 42 to 50, wherein the operation lever is a shift lever capable of instructing a shift operation to the transmission.
52. The harvester according to claim 51, wherein the shift lever is a main shift lever.
53. The second working unit or the third working unit is a cutting lift control unit that lifts and lowers a cutting unit or a reel lifting control unit that lifts and lowers a scraping reel provided in the cutting unit. The harvester according to any one of the above.
The harvesting machine according to any one of claims 42 to 53, wherein the second working unit is a cutting lifting control unit that lifts and lowers the cutting unit.
The harvesting machine according to any one of claims 42 to 53, wherein the second working unit is a harvesting lifting control unit that lifts and lowers a harvesting unit that harvests crops in a field.
The harvesting machine according to any one of claims 42 to 55, wherein the third working unit is a reel lifting control unit that lifts and lowers the scraping reel.
56. The harvester according to any one of claims 42 to 55, wherein the third working unit is a rotary chopper elevating control unit that elevates and lowers a rotary chopper that crushes stalks remaining in the field after the crop is harvested.
58. The harvester according to any one of claims 42 to 57, wherein a lever guide for guiding the operation lever is provided at a height position substantially the same as a seat surface of a driver's seat.
The harvesting machine according to any one of claims 42 to 58, wherein the operation lever is provided on a right side of a driver's seat.
The first working unit is a transmission of a traveling transmission;
With front and rear wheels,
60. The harvester according to any one of claims 42 to 59, wherein the traveling transmission drives the front wheels and the rear wheels.
The rear wheel is a steering wheel;
61. The harvester according to claim 60, further comprising a steering wheel that steers the rear wheel.