JP2013169150A - Height adjustment structure of working part in harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a height adjustment structure of a working part in a harvester, stably adjusting the height of the working part while making the whole compact.SOLUTION: A height adjustment structure of a working part provided in a harvester includes: a support mechanism 80 for supporting the working part C to freely move in a vertical direction on a machine body; and a cable body 92, one end part 92a of which is connected to a fixed part 5a of the machine body, the other end part 92b being connected to the working part C, wherein the structure includes: a guide body 93 abutting on an intermediate part of the cable body 92 along the cable body 92; and an actuator 91 for moving the guide body 93 in a direction opposite to the intermediate part of the cable body 92 in the state of abutting on the intermediate part of the cable body 92, and the guide body 93 is moved to change the drawing route of the cable body 92 by the actuator 91, thereby moving up and down the other end part 92b of the cable body 92.

Description

  The present invention relates to a height adjustment structure of a working unit that is disposed in a harvesting machine and performs pre-processing and post-processing at the time of harvesting.

  The harvesting machine is provided with various working units used at the time of harvesting according to the harvest. For example, a harvesting device is provided in the harvesting machine that raises a straw that has fallen in the field as a working unit for pre-harvest processing. For crops that harvest only fruits and leaves, such as corn, leaf tobacco, and tea, the trunk remains in the field after harvesting. Some are. In many cases, such a working unit is vertically adjusted by a lift arm provided in the airframe. For example, in the remaining trunk processing apparatus disclosed in Patent Document 1, the remaining trunk processing apparatus is disposed via a link coupling mechanism provided at the rear part of the traveling machine body.

JP 2006-325464 A

  In recent years, with the increase in the size of the harvesting machine, the working unit also tends to be heavy. When raising and lowering such a heavy work part, the entire lift arm mechanism needs to be enlarged.

  An object of the present invention is to provide a height adjustment structure for a working unit of a harvesting machine capable of stably adjusting the height of the working unit while making the whole compact.

The first characteristic configuration of the height adjustment structure of the working unit of the harvester according to the present invention is a height adjustment structure of the working unit provided in the harvesting machine,
A support mechanism for supporting the working unit movably in the vertical direction with respect to the machine body, and a cable body having one end connected to the fixed part of the machine and the other end connected to the working part,
A guide body that abuts against the intermediate portion of the strip body along the strip body, and a direction that faces the intermediate portion of the strip body in a state where the guide body is in contact with the intermediate portion of the strip body And an actuator to be moved to
The guide body is moved by the actuator to change the tension path of the cable body so that the other end portion of the cable body moves up and down.

[Function and effect]
In this configuration, the guide body that contacts the intermediate portion of the rope body is moved by extending and contracting the actuator using a rope body having one end portion connected to the fixed portion of the machine body and the other end portion connected to the working portion. . Since the guide body moves in a direction facing the middle portion of the striated body in a state of being in contact with the middle part of the striated body and changes the tension path of the striated body, the other end portion of the striated body is Move up and down. When the other end of the cable body moves up and down, the working unit is supported by the support mechanism and moves in the up and down direction. Thereby, the height of the working part of the harvester can be adjusted stably. In addition, by supporting the working unit on the machine body via the rope body and the actuator, the height adjusting structure of the working unit can be configured in a compact manner.

  Another characteristic configuration of the height adjustment structure of the working unit of the harvester according to the present invention is that the other end of the cable body is connected to a central part of the working unit in the horizontal direction of the machine.

[Function and effect]
The central portion of the working unit in the left-right direction of the machine body is a position where the weight balance of the working unit is easily maintained. Therefore, when the other end of the rope is connected to the center of the working unit in the left-right direction of the machine as in this configuration, the working part supported by the rope is tilted to one side in the left-right direction of the machine. It becomes difficult. Thereby, the height adjustment of the stable working part can be performed.

  The other characteristic structure of the height adjustment structure of the working part of the harvester according to the present invention is that one end part of the cable body is connected to the fixing part disposed above the working part.

[Function and effect]
As in this configuration, when the one end portion of the rope body is connected to the fixed portion provided above the working portion, the rope body can be easily moved up and down. Therefore, the height adjustment of the working part connected to the cable body becomes easy.

  Another characteristic configuration of the height adjustment structure of the working unit of the harvesting machine according to the present invention is that the fixing unit is provided on a left-right frame of the machine body.

[Function and effect]
The left-right frame of the airframe has a predetermined length in the left-right direction of the airframe. For this reason, like this structure, the freedom degree of the position of the fixing | fixed part which connects the one end part of a rope body will increase by providing a fixing | fixed part in the left-right direction frame of a body. Therefore, the fixed part can be arranged at an appropriate position with respect to the working part.

  Another feature of the height adjustment structure of the working unit of the harvesting machine according to the present invention is that the support mechanism allows the swinging arm connected to the working unit to swing up and down around the horizontal axis of the machine body. It is in the point comprised by supporting.

[Function and effect]
As in this configuration, when the support mechanism is configured to support the swing arm connected to the work unit so as to swing up and down around the horizontal axis of the machine body, the work unit is supported by the swing arm. As a result, the posture of the working unit is stabilized. Thereby, the height of the working part can be adjusted in a state where the posture of the working part is stabilized.

  Another feature of the height adjustment structure of the working unit of the harvester according to the present invention is that the distance from the horizontal axis to the other end of the strip is the work of the swing arm from the horizontal axis. It is in the point set so that it may become longer than the distance to the edge part on the part side.

[Function and effect]
When the distance from the horizontal axis of the fuselage to the other end of the rope is shorter than the distance from the horizontal axis of the fuselage to the end of the swing arm on the working part side, the horizontal axis to the rope The distance to the point of action is shorter than the distance from the horizontal axis to the point of action of the swing arm. On the other hand, as in this configuration, the distance from the horizontal axis to the other end of the cable body is set to be longer than the distance from the horizontal axis to the end of the swing arm on the working part side. In this case, the distance from the horizontal axis to the action point of the cable body becomes longer than the distance from the horizontal axis to the action point of the swing arm. When the distance from the horizontal axis to the point of action of the ridge body is long, it is possible to reduce the vertical movement force of the ridge body necessary for swinging the working portion around the horizontal axis. As a result, the height of the working portion can be adjusted by reducing the driving force of the actuator that moves the guide body that moves the tension path of the cable body. As a result, the actuator can be miniaturized, and the height adjustment structure of the working unit can be configured compactly.

  Another characteristic configuration of the height adjustment structure of the working unit of the harvesting machine according to the present invention is that the swing arm is provided below the fixed unit.

[Function and effect]
When the working unit is moved up and down around the swing axis of the swing arm, the work unit moves along the arc of the swing arm. Here, if the swing arm is provided above the fixed part, the swing axis of the working part is positioned above the fixed part, and the arc when moving the work part up and down is the machine body. There is a movement width in the front-rear direction or the left-right direction. In this case, the position of the working unit with respect to the machine body may change depending on the height, and the workability of the working unit may be reduced. However, when the swing arm is provided below the fixed portion as in this configuration, the swing axis of the working portion is below the fixed portion, and the swing arm that moves when the working portion is moved up and down is used. The movement width becomes small in the front-rear direction or the left-right direction of the body at the end (arc portion). As a result, it is possible to suppress a problem that the position of the working unit relative to the machine body changes depending on the height of the working unit.

  According to another aspect of the present invention, the height adjustment structure of the working unit of the harvester includes the fixing unit above a front-rear frame of the machine body, and the swinging unit below the front-rear frame of the machine body. The point is that it has an arm.

[Function and effect]
As in this configuration, the fixed part is provided above the front-rear frame of the machine body, and the swing arm is provided below the front-rear frame of the machine body. The movement width becomes small in the front-rear direction or the left-right direction of the body at the end (arc portion). As a result, it is possible to suppress a problem that the position of the working unit relative to the machine body changes depending on the height of the working unit.

  Another characteristic configuration of the height adjustment structure of the working unit of the harvesting machine according to the present invention is that the actuator is fixed to the machine body in a state where the actuator is connected to the fixing part to which one end of the cable body is connected. There is in point.

[Function and effect]
As in this configuration, when the actuator is fixed to the airframe in a state where the actuator is coupled to a fixing portion to which one end of the strip body is connected, the actuator can be disposed near the strip body.

  Another characteristic configuration of the height adjusting structure of the working unit of the harvesting machine according to the present invention is that the actuator is a retractable hydraulic cylinder.

[Function and effect]
By adopting a telescopic hydraulic cylinder as an actuator as in this configuration, the configuration of the height adjustment structure of the working unit can be simplified.

Another characteristic configuration of the height adjustment structure of the working unit of the harvesting machine according to the present invention is as follows: on one side of one end of the strip connected to the fixing unit, on one side of the strip. The hydraulic cylinder is arranged in a vertically oriented posture so that the guide body can be moved,
The cord body having one end connected to the fixed portion is extended upward and wound around the guide body, and is extended downward from the guide body and connected to the working portion. It is in.

[Function and effect]
With this configuration, the cable body having one end connected to the fixed portion of the airframe is extended downward from the guide body and connected to the working portion by the hydraulic cylinder in the vertically oriented posture. Thereby, the structure of the height adjustment structure of a working part can be simplified. In addition, by arranging the hydraulic cylinders in a vertical posture, the length of the working unit height adjustment structure in the horizontal direction of the machine body can be made compact.

Another characteristic configuration of the height adjustment structure of the working unit of the harvesting machine according to the present invention is that the hydraulic cylinder is disposed in a lateral orientation on the lower side of one end portion of the cable body connected to the fixing unit,
An auxiliary guide body is supported on the lower fixed portion of the hydraulic cylinder,
The cable body, one end of which is connected to the fixed part, extends laterally and is wound around the guide body, is wound around the auxiliary guide body and extends downward, and is attached to the working unit. It is in a connected point.

[Function and effect]
With this configuration, the cable body whose one end is connected to the fixed part of the fuselage is laterally extended by the laterally oriented hydraulic cylinder and the auxiliary guide body of the lower fixed part of the hydraulic cylinder to the guide body. It is wound, wound around the auxiliary guide body, extends downward, and is connected to the working unit. Since the hydraulic cylinder is in the horizontal posture and the cable body extends downward through the auxiliary guide body, the weight load of the working unit is such that the guide body and the auxiliary guide body are fixed to the end of the hydraulic cylinder. To be distributed. Therefore, it is easy to move the tension path of the rope body by the lateral movement of the guide body. Further, by arranging the hydraulic cylinders in the lateral orientation, the vertical height of the machine body of the working unit height adjustment structure can be made compact.

  Another characteristic configuration of the height adjustment structure of the working unit of the harvester according to the present invention is that the guide body is a rotating body.

[Function and effect]
If the guide body is a rotating body as in this configuration, the friction force generated between the cable body and the guide body can be reduced by rotating the guide body, and the height of the working unit can be adjusted. It can be done smoothly. Moreover, the damage to the guide body and the cable body due to the frictional force can be reduced, and the durability of the height adjustment structure of the working part can be improved.

  Another characteristic configuration of the height adjustment structure of the working unit of the harvester according to the present invention is that the auxiliary guide body is a rotating body.

[Function and effect]
If the auxiliary guide body is a rotating body as in this configuration, the frictional force generated between the cable body and the auxiliary guide body can be reduced by the rotation of the auxiliary guide body, and the working section height can be reduced. The thickness can be adjusted smoothly. Further, the damage of the auxiliary guide body and the cable body due to the frictional force can be reduced, and the durability of the height adjustment structure of the working part can be improved.

It is a right view which shows the whole corn harvester. It is a top view which shows the whole corn harvester. It is a top view which shows a body frame. It is a side view which shows a residue processing apparatus. It is a transmission system diagram. It is a side view which shows the residue processing apparatus of another embodiment. It is a side view which shows the residue processing apparatus of another embodiment.

  Embodiments of the present invention will be described below with reference to the drawings, taking a corn harvester as an example.

  As shown in FIGS. 1 and 2, the corn harvester 100 includes a pair of left and right front wheels 1 and 1, a pair of left and right rear wheels 2 and 2, a driving cabin 3 located at the front of the machine body, and a rear of the driving cabin 3. It has a prime mover A located. The traveling machine body is configured to drive the front wheel 1 by the engine 4 provided in the prime mover A to be self-propelled, and to steer the rear wheel 2 by the power steering device. A pre-harvest processing device B is connected to the front part of the machine frame 5 of the traveling machine body, and a feeder 6 is provided from the rear part of the pre-harvest processing apparatus B to above the traveling machine body. A recovery tank 7 is provided at the rear of the machine body frame 5, and a residue processing device C is provided between the front and rear wheels 1 and 2 of the traveling machine body.

  The pre-harvest processing device B is swung up and down around the lifting axis P by a pair of left and right hydraulic cylinders 8. The grounding sled 9 is disposed at the front end of the pre-harvest processing device B, and the lifting / lowering operation is performed between the descending working posture in which the grounding sled 9 is located near the upper part of the ground and the ascending non-working posture in which the grounding sled 9 is raised above the ground It is configured so that it can. The corn harvester performs the corn harvesting work by running the traveling machine body with the pre-harvest processing device B in the lowered work posture. Specifically, the corn (the part where the seeds are tied in a rod shape) is harvested and left in the field while the stalks of the corn plants that are planted in the field are left in the field. The stalks are crushed by the residue processing device C.

The traveling aircraft will be described.
As shown in FIGS. 1 and 3, the fuselage frame 5 includes a pair of left and right main frames 11, 11, a driving part frame 12, and a driving part frame 13. A pair of left and right main frames 11 are provided in the longitudinal direction of the body. The operation part frame 12 has a pair of left and right support frame members 12a, 12a at the front part of the main frames 11, 11. The prime mover frame 13 has a pair of front and rear support frames 13a, 13a between the front and rear wheels 1, 2 of the pair of left and right main frames 11, 11.

  The pair of left and right main frames 11, 11 includes a front frame portion 11a, a rear frame portion 11b, and a connecting frame portion 11c. The front frame part 11a is located at the front part of the traveling machine body, and the rear frame part 11b is located at the rear part of the traveling machine body at a higher arrangement height than the front frame part 11a. The connecting frame portion 11c is vertically oriented to connect the rear end portion of the front frame portion 11a and the front end portion of the rear frame portion 11b, and includes a pair of front and rear frame members.

  The driving unit frame 12 includes a pair of left and right front column frames 12a and 12a, a pair of left and right column columns 12b and 12b, a cabin support frame 12c facing the vehicle body, and a support rod 12d. . The support frame members 12a and 12a and the support frame members 12b and 12b are erected separately on the front frame portion 11a of the pair of left and right main frames 11 and 11, respectively. The operation part frame 12 extends from the support frame members 12a and 12a upward in the front direction of the machine body, and the extended end part is connected to the front end part of the cabin support frame 12c.

  The prime mover frame 13 is provided with a pair of support frames 13a and 13a in the horizontal direction of the machine body and a connecting rod 13b in the front-and-rear direction of the machine body. The support frames 13a, 13a are installed side by side in the front-rear direction of the machine body at the rear frame portion 11b of the pair of left and right main frames 11, 11. The connecting rod 13b connects the ends of the support frames 13a and 13a. An engine mount portion is provided on each support frame 13a.

  As shown in FIG. 1, the operation cabin 3 is arranged to be located immediately above the feeder 6. The driving cabin 3 is supported by the cabin support frame 12c of the driving unit frame 12 at an arrangement height located above the front wheel 1.

The pre-harvest processing apparatus B will be described.
As shown in FIG. 1, the pre-harvest processing device B includes a pre-processing frame 35 that extends from the front part of the machine body frame 5 so as to be swingable up and down around the lifting axis P. A harvesting unit 36 is provided at the front of the preprocessing frame 35, and a sending unit 37 is provided at the rear of the preprocessing frame 35.

  As shown in FIGS. 2 and 3, the preprocessing frame 35 includes a pair of left and right connecting frames 37 a and 37 a and a harvesting part frame 42. The rear ends of the connection frames 37a, 37a are rotatably connected to a pair of left and right support portions 40, 40 provided in the front support frame material 12a of the operation unit frame 12. The rear end portion of the harvesting part frame 42 is connected to the front end portions of the connection frames 37a and 37a.

  The harvesting unit 36 includes a harvesting device 43 and a lateral feed auger 44. Three harvesting devices 43 are provided in the front portion of the harvesting part frame 42 in the horizontal direction of the machine body. The lateral feed auger 44 is provided in the lateral direction of the machine body at the rear of the harvesting part frame 42. The harvesting device 43 is provided with a pair of harvested product engaging and transporting devices 45 and 45 at the front part of the harvesting unit frame 42, and a pair of harvesting rolls 63 is provided below the harvested product engaging and transporting devices 45 and 45. It has been.

  The axis of the fulcrum shaft 41 is a lifting axis P. The pair of left and right connecting frames 37 a and 37 a are sending part frames constituting the sending part 37 that sends the corn harvested by the harvesting part 36 to the feeder 6. The horizontal width of the harvesting part frame 42 is set to be larger than the length of the interval between the lateral outer surfaces of the pair of left and right connecting frames 37a, 37a. The harvesting part frame 42 and the connection frame 37a are connected so that the left and right side parts 42a of the harvesting part frame 42 protrude laterally outward from the connection frame 37a.

  The harvesting part frame 42 includes a lateral feed frame part 46 and a support frame 47 facing the machine body. The lateral feed frame portion 46 includes a rear vertical wall plate 46a whose rear surface side is connected to the front end portions of the pair of left and right connection frames 37a, 37a. The support frame 47 is constructed at the front end of a pair of left and right horizontal and vertical wall plates 46 b and 46 b constituting the horizontal feed frame portion 46.

  The horizontal feed frame portion 46 includes a pair of left and right horizontal vertical wall plates 46b and 46b respectively connected to both ends of the rear vertical wall plate 46a. The horizontal feed auger 44 is formed by the pair of left and right horizontal vertical wall plates 46b and 46b. Is supported rotatably. The lateral feed frame portion 46 supports a lateral feed deck 46 c located below the lateral feed auger 44. A supply port 46d is provided in the rear vertical wall plate 46a of the transverse feed frame portion 46.

  The sending unit 37 includes connecting frames 37a and 37a as a pair of left and right sending unit frames. The pair of left and right connection frames 37a, 37a are arranged such that the supply port 46d is positioned between the pair of left and right connection frames 37a, 37a and the pair of left and right connection frames 37a are in the lowered working posture of the pre-harvest processing device B. , 37a so that the insertion port 71 of the feeder 6 enters. Thereby, the sending unit 37 sends the corn supplied from the supply port 46 d of the harvesting unit 36 to the input port 71 of the feeder 6.

The feeder 6 will be described.
As shown in FIG. 1, the feeder 6 includes a feeder case 70 that is long in the front-rear direction of the machine body, and is deployed in a rearwardly rising posture that is located on the upper side of the machine body toward the rear side of the machine body (lower side in the transport direction). A feeder conveyor is provided inside the feeder case 70 so as to be able to drive and rotate. The feeder 6 is positioned between the pair of left and right front support frame members 12a, 12a below the driving cabin 3 and passes between the pair of left and right front wheels 1, 1 above the traveling mission 15 in the longitudinal direction of the body. It has been deployed. The front end portion of the feeder 6 is supported by a stay 73 extending from the front wheel support frame 14, and the intermediate portion of the feeder 6 is supported by a stay 74 extending from the rear column frame material 12 b. The rear end portion of the feeder 6 is supported by a pair of left and right columns 75, 75 that are arranged behind the engine 4 and are erected on the body frame 5.

The collection tank 7 will be described.
As shown in FIG. 1, the collection tank 7 is arranged behind the feeder 6 with the front end side positioned below the rear end portion of the feeder 6. The collection tank 7 is supported on a support column 150 erected at the rear end of the machine body frame 5 so as to be swingable around the dump axis Z. A dump cylinder 153 is attached across a cylinder bracket 151 provided on the lateral side of the collection tank 7 and a bracket 152 provided on the body frame 5. The collection tank 7 is swung between a collection posture and a discharge posture by expansion and contraction of the dump cylinder 153. The collection posture of the collection tank 7 is a posture in which the opening 7b provided with the harvest receiving chute 7a is located below the harvest discharge port 7f of the feeder 6 and upward of the machine body. The discharge posture of the collection tank 7 is a posture in which the opening 7b is located behind the support column 150 and downward in the machine body.

  The support column 150 and the dump cylinder 153 are arranged on both sides of the recovery tank 7. The support column 150 is reinforced by an auxiliary support column 154 having an inclined posture attached over the upper end portion of the support column 150 and the bracket 152.

The residue processing apparatus C will be described.
As shown in FIG. 1, the residue processing apparatus C is a part between the front wheel 1 and the rear wheel 2 of the traveling machine body and is provided in a part below the rear frame part 11b. As shown in FIGS. 3 and 4, the residue processing apparatus C includes a processing case 81 supported on the machine body frame 5 via a pair of left and right swing support members 80, 80, and is driven to rotate inside the processing case 81. The rotary chopper 82 is provided freely, and the pressure-reducing roller 83 is provided rotatably behind the rotary chopper 82. The pressure reducing roller 83 is attached to a support bracket 53 a at the rear of the processing case 81. The processing case 81 has the function of the body of the residue processing device C.

  The pair of left and right swing support members 80 extend from the body frame side so as to be swingable up and down around the axis of a counter shaft 162 that faces the body, which will be described later, and supports the entire residue processing apparatus C at the extended end. It connects with the processing case 81 so that it may do. The pair of left and right swing support members 80 and 80 includes a pair of upper and lower swing arms 80a and 80b. The pair of left and right swing support bodies 80, 80 are support mechanisms that support the residue processing apparatus C so as to be movable in the vertical direction with respect to the machine body.

  In the residue processing apparatus C, a pair of left and right swing supports 80, 80 are swung up and down by an operating mechanism 90 including an actuator 91, whereby the pressure-reducing roller 83 is grounded and the rotary chopper 82 approaches the ground. The lowering operation position and the pressure reducing roller 83 and the rotating chopper 82 are moved up and down to the ascending operation position separated from the ground. In the present embodiment, an example in which a hydraulic cylinder is used as the actuator 91 is shown. The actuator 91 is not limited to a hydraulic cylinder, and various driving devices can be used.

  A bracket 5a is attached to a left and right support frame 13c located at the rear of the support frame 13a. The bracket 5a is a fixing part of the machine body to which the hydraulic cylinder (actuator) 91 and the cable body 92 are fixed. In addition to the hydraulic cylinder 91, the operation mechanism 90 includes a cable body 92 having one end 92 a connected to the bracket 5 a and the other end 92 b connected to the residue processing device C. The rope body 92 is, for example, a chain, a wire, a rope, or the like. The other end portion 92b of the rope body 92 is connected to the central portion of the left and right direction of the residue processing device C. The central part of the left and right direction of the residue processing device C is a position where the weight balance of the residue processing device C is easily maintained. Therefore, if the strip body 92 is connected to the center part of the left and right direction of the machine body of the residue processing device C as in this configuration, the residue processing device C supported by the cable body 92 is It becomes difficult to lean to one side. Thereby, height adjustment of the residue processing apparatus C of the stable horizontal attitude | position can be performed.

  The lower end portion of the hydraulic cylinder 91 is fixed to the bracket 5a, and is configured to expand and contract in the vertical direction of the machine body. A guide body 93 is fixed to the upper end portion of the hydraulic cylinder 91 so as to be in contact with the intermediate portion of the rope body 92 along the rope body 92. In the present embodiment, the guide body 93 is a rotating body. A hydraulic cylinder 91 is disposed in an upright posture on the side of one end portion 92a of the cable body 92 connected to the bracket (fixed portion of the machine body) 5a. When the hydraulic cylinder 91 expands and contracts, the guide body 93 attached to the upper end of the hydraulic cylinder 91 can move in the vertical direction of the machine body. The cable body 92 connected to the bracket 5a extends upward and is wound around the guide body 93, and extends downward from the guide body 93 to the processing case 81 of the residue processing device C (working unit). It is connected.

  When the hydraulic cylinder 91 expands and contracts in the vertical direction of the machine body, the guide body 93 also moves in the vertical direction of the machine body. Thereby, the guide body 93 is moved in the direction facing the intermediate portion of the cable body 92. A guide body 93 is supported by one end portion of the hydraulic cylinder 91, and the other end portion of the hydraulic cylinder 91 is connected to the body frame 5.

  Thus, when the hydraulic cylinder 91 is in the vertical orientation, the structure of the height adjustment structure of the residue processing device C can be simplified. Further, by arranging the hydraulic cylinder 91 in the vertical orientation, the length of the height adjustment structure of the residue processing apparatus C in the horizontal direction can be made compact.

  The bracket 5a is disposed above the residue processing device C, and one end portion 92a of the cable body 92 is connected to the bracket 5a. When the one end portion 92a of the rope body 92 is connected to the bracket 5a provided above the residue disposal apparatus C, the rope body 92 can be easily moved up and down. Therefore, the height adjustment of the residue processing device C connected to the cable body 92 is facilitated.

  The hydraulic cylinder 91 is fixed to the airframe in a state where the hydraulic cylinder 91 is coupled to the bracket 5a to which the one end 92a of the rope body 92 is connected. Thereby, the hydraulic cylinder 91 can be disposed near the cable body 92.

  The swing arms 80a and 80b are disposed below the bracket 5a. The bracket 5a is disposed above the rear frame portions 11b and 11b facing the front and rear of the machine body, and the swing arms 80a and 80b are disposed below the rear frame portions 11b and 11b. As described above, when the swing arms 80a and 80b are disposed below the bracket 5a, the horizontal shaft core (swing shaft core) 180b of the residue processing device C is positioned below the bracket 5a, and the residue processing device C is The width of movement of the ends (arc portions) of the swinging arms 80a and 80b that move when moving up and down in the longitudinal direction of the machine body is reduced. As a result, it is possible to suppress a problem that the position of the residue processing device C relative to the machine body in plan view changes depending on the height of the residue processing device C.

  As shown in FIG. 5, the residue transmission mechanism 177 is connected to a portion of the counter shaft 162 located on the opposite side of the counter transmission mechanism 161 from the side where the harvesting transmission mechanism 163 and the feeder transmission mechanism 173 are located. Yes. More specifically, the residue transmission mechanism 177 is connected to the end of the counter shaft 162 opposite to the side where the harvesting transmission mechanism 163 and the feeder transmission mechanism 173 are located.

  The residual transmission mechanism 177 transmits the driving force of the counter shaft 162 to the input shaft 180a of the transmission gear case 180 as the input shaft 180a of the residual transmission mechanism 177, and the input shaft 178 via the transmission belt 183 from the input shaft 180a. It is comprised so that it may transmit to.

  In order to raise the residue processing apparatus C, the hydraulic pressure in the hydraulic cylinder 91 is controlled and the guide body 93 is moved to the upper side of the machine body. As a result, the tension path of the cable body 92 is changed to the upper side of the machine body, and the cable body 92 on the residue processing device C side is wound up, and the residue processing device C (working unit) is lifted to the storage position. Moving. In order to lower the residue processing apparatus C, the oil pressure in the hydraulic cylinder 91 is controlled to move the guide body 93 to the lower side of the machine body. If this is done, the tension path of the rope body 92 will move to the lower side of the machine body, the rope body 92 on the residue processing device C side will be loosened, and the residue processing device C (working part) will be lowered by its own weight to work. Move to position. Further, since the rope body 92 is folded at the upper end of the guide body 93 and is located on both the left and right sides of the hydraulic cylinder 91 and the rope body 92, the movement distance of the residue processing apparatus C in the vertical direction of the machine body is determined by the rope body 92. The stroke is twice the moving distance in the vertical direction.

  The transmission gear case 180 is fixed to a stay 184 that extends from the driving unit frame 13. When the residue processing apparatus C is moved up and down, the input shaft 178 swings around the axis of the output shaft 180b that is biased with respect to the axis of the counter shaft 162 that is the lifting axis of the residue processing apparatus C. The transmission belt 183 swings up and down the output shaft 180b to swing the tension arm 185 around the pivot shaft 185a against the tension spring 186, thereby changing the tension of the transmission belt 183. Therefore, the residue transmission mechanism 177 enables swinging up and down around the axis of the counter shaft 162 of the residue processing apparatus C.

  If the ground surface of the residue processing device C in the harvesting machine is constant when the unevenness having a large level difference exists in the field, the lower surface of the residue processing device C collides with the convex portion of the field and the rotary chopper 82 is damaged. There is a fear. In order to avoid such a problem, a ground height sensor 95 for detecting a change in the height of the aircraft to the ground is provided at a position behind the front wheel 1 and in front of the residue processing device C. The control valve for controlling the hydraulic pressure to the hydraulic cylinder 91 is switched according to the detected value of 95. That is, the ground height of the residue processing device C is controlled based on the change in the ground height of the machine body.

For example, the ground height of the residue processing device C is controlled as follows.
When the change in ground height detected by the ground height sensor 95 becomes a predetermined value or more in the direction approaching the ground from the initial value, the hydraulic control valve is switched so that the upper end of the hydraulic cylinder 91 moves upward on the fuselage. The processing device C is raised. Conversely, when the change in ground height detected by the ground height sensor 95 exceeds a predetermined value in the direction away from the ground from the initial value, the hydraulic control valve is switched so that the upper end of the hydraulic cylinder 91 moves downward on the fuselage. Then, the residue processing device C is lowered.

  Thereby, the rotation chopper 82 of the residue processing apparatus C can be rotated at a position above the ground with respect to the unevenness of the ground. As a result, the rotary chopper 82 is suppressed from receiving a load from the ground, and the durability of the rotary chopper 82 can be improved. Further, by disposing the ground height sensor 95 at a position behind the front wheel 1 and in front of the residue processing device C, the ground height sensor 95 is hardly affected by the residue. Further, by providing the ground height sensors 95 on the left and right sides of the aircraft, it is possible to improve the detection accuracy of changes in the ground height of the aircraft.

  Further, since the swing arms 80a and 80b connected to both ends in the longitudinal direction of the residue processing apparatus C are supported so as to be swingable up and down around the horizontal axis of the machine body, the residue treatment apparatus C has a longitudinal length. It will be supported at both ends of the direction, and the attitude of the residue processing apparatus C will be stabilized. Thereby, the height adjustment of the residue processing apparatus C can be performed in a state where the attitude of the residue treatment apparatus C is stabilized.

  In the present embodiment, the distance from the output shaft 180b, which is the horizontal axis of the machine body, to the other end 92b of the cable body 92 is from the output shaft 180b to the end of the swinging arm 80a, 80b on the residue processing device C side. It is set to be longer than the distance. When the distance from the output shaft 180b to the other end portion 92b of the cable body 92 is shorter than the distance from the output shaft 180b of the fuselage to the ends of the swinging arms 80a and 80b on the residue processing device C side, the output The distance from the shaft 180b to the action point of the ridge body 92 is shorter than the distance from the output shaft 180b to the action points of the swinging arms 80a and 80b. On the other hand, as in the present embodiment, the distance from the output shaft 180b to the other end portion 92b of the cable body 92 is greater than the distance from the output shaft 180b to the end of the swinging arm 80a, 80b on the residue processing device C side. If it is set to be longer, the distance from the output shaft 180b to the action point of the striated body 92 becomes longer than the distance from the output shaft 180b to the action point of the striated body 92.

  Thus, when the distance from the output shaft 180b to the action point of the strip body 92 is long, the moving force up and down of the strip body 92 necessary for swinging the residue processing device C around the output shaft 180b is obtained. Can be reduced. This makes it possible to adjust the height of the residue processing device C by reducing the driving force of the hydraulic cylinder (actuator) 91 that moves the guide body 93 that moves the tension path of the cable body 92. As a result, the hydraulic cylinder 91 can be reduced in size, and the height adjustment structure of the residue processing apparatus C can be configured in a compact manner.

  As shown in FIG. 5, the driving force of the output shaft 4 a of the engine 4 is transmitted to the input shaft 16 of the traveling mission 15 by the traveling transmission mechanism 160. The traveling transmission mechanism 160 includes a plurality of transmission belts 160 a wound around the output shaft 4 a of the engine 4 and the input shaft 16 of the traveling mission 15. The input shaft 16 of the traveling mission 15 protrudes laterally from the mission case.

  The driving force of the output shaft 4 a of the engine 4 is transmitted to the counter shaft 162 by the counter transmission mechanism 161. The driving force of the counter shaft 162 is used for the harvesting transmission mechanism 163, the feeder transmission mechanism 173, and the residue transmission mechanism 177. The harvesting transmission mechanism 163 is connected to one end of the counter shaft 162 and transmits the driving force of the counter shaft 162 to one end of the input shaft 164 of the pre-harvest processing device B. The feeder transmission mechanism 173 is connected to one end of the counter shaft 162 and transmits the driving force of the counter shaft 162 to the input shaft 77 of the feeder 6. The residue transmission mechanism 177 is connected to the other end of the counter shaft 162, and transmits the driving force of the counter shaft 162 to an input shaft 178 that is a rotation support shaft of the rotary chopper 82 of the residue processing apparatus C.

  The counter shaft 162 is disposed below the engine 4 so as to be lateral to the fuselage, and is positioned on the rear side of the connecting frame portion 11c below the rear frame portion 11b. The counter transmission mechanism 161 is connected to the central portion of the counter shaft 162 in the lateral direction of the machine body, and includes a plurality of transmission belts 161 a wound around the output shaft 4 a of the engine 4 and the counter shaft 162.

  As shown in FIG. 5, the counter shaft 162 is arranged so as to be positioned on the rear side of the machine body with respect to the input shaft 164 of the pre-harvest processing apparatus B and on the front side of the machine body with respect to the input shaft 77 of the feeder 6. It is. As a result, the positional relationship among the counter shaft 162, the input shaft 164, and the input shaft 77 becomes a positional relationship in which the counter shaft 162 enters between the input shaft 164 and the input shaft 77 when viewed in the vertical direction of the machine body. Therefore, the transmission distance of the harvesting transmission mechanism 163 can be shortened while making the transmission distance of the feeder transmission mechanism 173 the same as compared with the case where the counter shaft 162 is arranged behind the input shaft 77 of the feeder 6.

  Further, the counter shaft 162 is arranged between the front wheel 1 and the rear wheel 2 in the same manner as the residue processing device C. Thereby, the space | interval of the counter shaft 162 and the residue processing apparatus C becomes small, and the transmission distance of the residue transmission mechanism 177 becomes short.

  The harvesting transmission mechanism 163 is connected to an end portion of the counter shaft 162 that is located on the lateral end side opposite to the side where the engine 4 is located, and is disposed on the side opposite to the side where the engine 4 is located with respect to the feeder 6. Has been.

  As shown in FIG. 5, the harvesting transmission mechanism 163 includes a transmission mechanism 163 a on the upper transmission side, a transmission mechanism 163 b on the lower transmission side, and a torque limiter 172. The transmission mechanism 163a includes a transmission chain 169 wound around a counter shaft 162 and an intermediate transmission body 168 that is rotatably supported at the end of the fulcrum shaft 41. The transmission mechanism 163 b includes a chain sprocket 171 as an interlocking member provided on the input shaft 164 so as to be relatively rotatable, and a transmission chain 170 wound around the chain sprocket 171 and the intermediate transmission body 168. The torque limiter 172 is provided across the chain sprocket 171 and the input shaft 164.

  The input shaft 164 of the pre-harvest processing device B is an input shaft of the harvesting unit 36. The input shaft 164 is interlocked with the rotation support shaft 44a of the lateral feed auger 44 by a lateral feed transmission mechanism 165 connected to the end opposite to the side where the torque limiter 172 is located. The input shaft 164 is linked to the harvested product locking and transporting device 45 and the drive mechanism 50 of each harvesting roll 63 by a transport transmission mechanism 166 connected to the end opposite to the side where the torque limiter 172 is located. .

  The lateral feed transmission mechanism 165 includes a transmission chain 165 a wound around the input shaft 164 and the rotation support shaft 44 a of the lateral feed auger 44.

  The transport transmission mechanism 166 includes a transmission chain 166 a wound around an input shaft 164 and a transmission shaft 167 for the drive case 57. The transmission shaft 167 is coupled to an input shaft 57 a of the drive case 57 at the lateral end of the three drive cases 57 so as to be integrally rotatable. Input shafts 57a of a pair of adjacent drive cases 57 are connected by an interlocking shaft 57b. Therefore, the driving force of the input shaft 164 is transmitted to the harvested product locking and conveying device 45 and the driving mechanism 50 of each harvesting roll 63 by the conveying transmission mechanism 166.

  The feeder transmission mechanism 173 includes an upper-side transmission mechanism 173a and a lower-side transmission mechanism 173b. The upper-side transmission mechanism 173 a includes a transmission chain 174 wound around the counter shaft 162 and the rotation support shaft 122 of the rotation fan 123 in the dust exhaust fan device 120. The lower transmission mechanism 173 b includes a transmission chain 175 wound around the rotation support shaft 122 of the rotary fan 123 and the input shaft 77 of the feeder 6.

  Therefore, the driving force of the counter shaft 162 is transmitted to the rotary fan 123 of the dust exhaust fan device 120 by the upper transmission mechanism 173a of the feeder transmission mechanism 173.

  The transmission chain 175 constituting the lower-side transmission mechanism 173 b is wound around the input shaft 133 of the processing device 130 including the rotation support shaft 133 of the take-in rotary body 132. A transmission chain 176 is wound around the input shaft 133 of the processing device 130 and the rotation support shaft 136 a of the rotary blade 136.

  Therefore, the driving force of the rotary spindle 122 of the rotary fan 123 is transmitted to the scraping rotary body 132 of the processing apparatus 130 by the lower side transmission mechanism 173b. The driving force of the input shaft 133 is transmitted to the rotary blade 136 by the transmission chain 176.

[Second Embodiment]
In this embodiment, as shown in FIG. 6, the hydraulic cylinder (actuator) 91 is fixed to the bracket 5a so as to expand and contract toward the rear of the machine body. A guide body 93 is fixed to the rear end portion of the hydraulic cylinder 91 along the strip body 92 so as to come into contact with the intermediate portion of the strip body 92. An auxiliary guide body 94 is fixed to the bracket 5 a at a position below the hydraulic cylinder 91. In the present embodiment, the guide body 93 and the auxiliary guide body 94 are constituted by rotating bodies. The guide body 93 and the auxiliary guide body 94 may be sliding bodies. The cable body 92 is arranged along an arc on the rear side of the body of the guide body 93 and along an arc on the front side of the body of the auxiliary guide body 94. The cable body 92 having one end 92 a connected to the bracket 5 a of the machine body is extended horizontally and wound around the guide body 93 by the hydraulic cylinder 91 in the horizontal orientation and the auxiliary rotating body 84 on the lower side of the hydraulic cylinder 91. It is rotated, wound around the auxiliary guide body 94 and extended downward, and connected to the residue processing device C.

  When the hydraulic cylinder 91 expands and contracts in the longitudinal direction of the body, the guide body 93 also moves in the longitudinal direction of the body. Thereby, the guide body 93 is moved in a direction facing the intermediate portion of the cable body 92. A guide body 93 is supported by one end portion of the hydraulic cylinder 91, and the other end portion of the hydraulic cylinder 91 is connected to the body frame 5.

  In order to raise the residue processing apparatus C, the guide body 93 is moved to the rear side of the machine body by controlling the hydraulic pressure in the hydraulic cylinder 91. Thereby, the tension path of the rope body 92 moves to the aircraft rear side, and the rope body 92 on the residue processing device C side is wound up. As a result, the residue processing device C (working unit) is pulled up by the cable body 92 and moves up to the storage position. In order to lower the residue processing apparatus C, the hydraulic pressure in the hydraulic cylinder 91 is controlled and the guide body 93 is moved to the front side of the machine body. Thereby, the tension path of the rope body 92 moves to the front side of the machine body, and the rope body 92 on the residue processing device C side is loosened. As a result, the residue processing device C (working unit) is lowered by its own weight and moved to the working position. Further, since the rope body 92 is folded back at the rear end of the guide body 93 and is positioned on both the upper and lower sides of the hydraulic cylinder 91 and the rope body 92, the movement distance in the vertical direction of the machine body of the residue processing device C is determined by the rope body. The stroke is twice the moving distance in the longitudinal direction of 92 aircraft.

  When the hydraulic cylinder 91 is in the horizontal posture and the cable body 92 is extended downward through the auxiliary guide body 94, the weight load of the residue processing device C is distributed to the guide body 93 and the auxiliary guide body 94. Is done. Therefore, it is easy to move the tension path of the cable body 92 by the lateral movement of the guide body 93. Further, by arranging the hydraulic cylinder 91 in the horizontal orientation, the vertical height of the machine body of the height adjustment structure of the residue processing apparatus C can be made compact.

[Other Embodiments]
(1) In the above embodiment, an example in which the ground height sensor 95 is provided at a position behind the front wheel 1 and in front of the residue processing device C has been shown. However, as shown in FIG. The sensor 95 may be provided in the residue processing apparatus C main body. Further, a hydraulic cylinder (actuator) 96 that receives the detection value of the ground height sensor 95 and controls the ground height of the residue processing device C may be provided in the residue processing device C main body. The hydraulic cylinder 96 provided in the residue processing apparatus C main body is disposed between the upper portion of the processing case 81 and the support bracket 83 a of the pressure reducing roller 83.

For example, the following control is performed on the ground height of the residue processing device C.
When the change in ground height detected by the ground height sensor 95 exceeds a predetermined value in the direction approaching the ground from the initial value, a hydraulic control valve (not shown) is moved so that the hydraulic cylinder 96 moves in a direction to push down the pressure reducing roller 83. Is switched. Thereby, the residue processing apparatus C main body moves upward. Conversely, when the change in ground height detected by the ground height sensor 95 exceeds a predetermined value in the direction away from the ground from the initial value, the hydraulic control valve is moved so that the hydraulic cylinder 96 moves in the direction of pulling up the pressure reducing roller 83. Switch. Thereby, the residue processing apparatus C main body is moved downward by its own weight.

  As described above, since the height of the residue processing device C main body with respect to the unevenness of the field scene can be adjusted, the harvesting operation can be continued in a state where the rotary chopper 82 of the residue processing device C is not in contact with the field scene as much as possible. it can. As a result, the load that the rotary chopper 82 receives from the field is reduced, and the durability of the rotary chopper 82 can be improved. Further, by disposing the ground height sensor 95 at a position behind the front wheel 1 and in front of the residue processing device C, the ground height sensor 95 is hardly affected by the residue. Further, since the ground height sensor 95 and the hydraulic cylinder 96 are provided in the residue processing apparatus C main body, the ground height of the rotary chopper 82 can be adjusted with high accuracy. In the present embodiment, the hydraulic cylinder 91 fixed to the bracket 5a operates to switch the residue processing device C between the work position and the storage position.

(2) In the above embodiment, an example in which a rotating body is adopted as each of the guide body 93 and the auxiliary guide body 94 has been shown. However, the rope body 92 is used as one or both of the guide body 93 and the auxiliary guide body 94. You may comprise with the sliding body which slides.

(3) In the second embodiment, the actuator (hydraulic cylinder) 91 is arranged in the longitudinal direction of the machine body. However, the actuator 91 may be arranged in the lateral direction of the machine body.

(4) In the above embodiment, the residue processing device C of the corn harvester 100 is shown as an example of the working unit of the harvester. However, as the working unit of the harvester, for example, a pre-processing unit such as a harvesting unit, It may be a post-processing section such as a harvest collection section or a combine auger.

(5) In the above-described embodiment, an example in which the front wheels 1 and the rear wheels 2 are provided as the traveling devices of the harvester 100 has been described. However, the traveling devices of the harvester 100 may be provided with crawlers.

  INDUSTRIAL APPLICABILITY The present invention can be widely used for a harvesting machine provided with a working unit that can be moved up and down with respect to a farm scene.

4 Engine 5 Airframe Frame 5a Bracket (Fixing part of the airframe)
6 Feeder 11 Main frame 11b Rear frame part (front-rear frame)
13c Support frame (frame facing left and right of the aircraft)
80 Support mechanism 80a, 80b Swing arm (support mechanism)
91 Hydraulic cylinder (actuator)
92 Rib 92a One end 92b Other end 93 Guide body 94 Auxiliary guide body 95 Ground height sensor 100 Corn harvesting machine (harvesting machine)
180b Output shaft (horizontal shaft core)
B Pre-harvest processing device C Residue processing device (working section)

Claims (14)

The height adjustment structure of the working unit provided in the harvester,
A support mechanism for supporting the working unit movably in the vertical direction with respect to the machine body, and a cable body having one end connected to the fixed part of the machine and the other end connected to the working part,
A guide body that abuts against the intermediate portion of the strip body along the strip body, and a direction that faces the intermediate portion of the strip body in a state where the guide body is in contact with the intermediate portion of the strip body And an actuator to be moved to
The height adjustment structure of the working part of the harvesting machine which is comprised so that the other end part of the said strip body may move up and down by moving the said guide body by the said actuator and changing the tension path | route of the said strip body.   The height adjustment structure of the working part of the harvesting machine according to claim 1, wherein the other end part of the cable body is connected to a central part of the working part in the left-right direction.   The height adjustment structure of the working part of the harvesting machine according to claim 1 or 2, wherein one end part of the rope is connected to the fixing part arranged above the working part.   The height adjustment structure of the working part of the harvesting machine according to any one of claims 1 to 3, wherein the fixing part is provided in a frame part facing left and right of the machine body.   The said support mechanism is comprised by supporting the rocking | fluctuation arm connected to the said working part so that rocking | fluctuation up and down is possible around the horizontal axis center of an airframe. The height adjustment structure of the working part of the harvester.   6. The distance from the horizontal axis to the other end of the cable body is set to be longer than the distance from the horizontal axis to the end of the swing arm on the working part side. Height adjustment structure of the working part of the described harvester.   The height adjustment structure of the working part of the harvester according to claim 5 or 6, wherein the swing arm is provided below the fixed part.   The working unit of the harvesting machine according to any one of claims 5 to 7, further comprising the fixing unit above a front-rear frame of the machine body and the swing arm below the front-rear frame of the machine body. Height adjustment structure.   The height of the working part of the harvesting machine according to any one of claims 1 to 8, wherein the actuator is fixed to the machine body in a state where the actuator is connected to the fixing part to which one end of the cable body is connected. Adjustable structure.   The height adjusting structure of the working part of the harvesting machine according to any one of claims 1 to 9, wherein the actuator is a retractable hydraulic cylinder. The hydraulic cylinder is arranged in an upright posture on the lateral side of one end portion of the strip body connected to the fixed portion so that the guide body can be moved upward from one end portion of the strip body,
The cord body having one end connected to the fixing portion extends upward, is wound around the guide body, extends downward from the guide body, and is connected to the working portion. Item 10. A height adjusting structure of a working part of the harvesting machine according to Item 10. The hydraulic cylinder is arranged in a lateral orientation on the lower side of one end portion of the cable body connected to the fixing portion,
An auxiliary guide body is supported on the lower fixed portion of the hydraulic cylinder,
The cable body, one end of which is connected to the fixed part, extends laterally and is wound around the guide body, is wound around the auxiliary guide body and extends downward, and is attached to the working unit. The height adjustment structure of the working part of the harvesting machine according to claim 10 connected.   The height adjusting structure of the working part of the harvester according to any one of claims 1 to 12, wherein the guide body is a rotating body.   The height adjustment structure of the working part of the harvesting machine according to claim 12, wherein the auxiliary guide body is a rotating body.

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