JP2023117744A - Combine harvester - Google Patents

Abstract

To provide a combine harvester capable of suppressing miss of picking up of crop by a pickup device.SOLUTION: There is provided a pickup device 120 which is configured vertically rotatable with a fulcrum 121 positioned at rear of a cutting blade device 3B, and picks up crop in front of the cutting blade device 3B. An attachment position of the pickup device to the cutting blade device 3B is changeable in a lateral direction.SELECTED DRAWING: Figure 10

Description

The present invention relates to a combine.

Conventional combine harvesters are known to have a reel that rotates above a cutting blade device, and feed cut crops to an auger device. (Patent document 1)

JP 2012-210164 A

However, with the technique disclosed in Patent Document 1, crops such as adzuki beans whose branches and leaves are close to the ground cannot be rake-in by the reel, and the crops may be lost.

The present invention, which has solved the above problems, is as follows.

In the first aspect of the invention, a pick-up device (120) is configured to be vertically rotatable by a fulcrum (121) located behind the cutting blade device (3B), and picks up crops in front of the cutting blade device (3B). A combine harvester in which the attachment position of the pickup device (120) to the pre-reaping treatment device (3) in the horizontal direction with respect to the cutting blade device (3B) can be changed.

The invention according to claim 2 is provided with a connector (127) that connects a plurality of the pickup devices (120), and the attachment position of the connector (127) to the pre-reaping treatment device (3) can be changed. The combine according to claim 1.

According to the first aspect of the invention, the pick-up device (120) can prevent crops from being left unpicked. In addition, since the mounting position can be changed, it becomes easy to cope with fields having different planting row intervals.

According to the second aspect of the invention, the positions of the plurality of pick-up devices (120) can be changed integrally, so the adjustment is further facilitated.

It is the left side view which carried out the cross section of the combine in the vertical direction. It is a front view of an interval adjusting device. It is a top view of an interval adjusting device. It is a left view of a space|interval adjustment apparatus. It is a left side view of the space|interval adjusting device which abbreviate|omits the left wall of a feeder house. FIG. 4 is a front view of a scraping reel of the scraping device; (a) is a left side view of the tines attached to the scraping reel of the scraping device, and (b) is a deformation. (a) is a front view and (b) is a left side view of the rotating body of the auger device. It is a left side view of time. It is a side view around a pickup device. 2 is a plan view of the periphery of the pickup device; FIG. It is a side view around a pickup device.

As shown in FIG. 1, the general-purpose combine harvester is provided with a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface on the underside of the body frame 1, and on the front side of the body frame 1 is a reaping device for harvesting grain stalks in a field. A pretreatment device 3 is provided, and a threshing device 4 for threshing and sorting the harvested stalks is provided on the rear left side of the pre-harvesting treatment device 3, and an operator rides on the rear right side of the pre-harvest processing device 3. A section 5 is provided.

An engine E is provided in the lower part of the control unit 5, and a grain tank 6 for storing grains that have been threshed and sorted is provided behind the control unit 5. Behind the grain tank 6, A discharge cylinder 7 is provided for discharging grains to the outside. The discharge pipe 7 is formed of a vertical discharge pipe communicating with the lower portion of the grain tank 6 and extending in the vertical direction, and a horizontal discharge pipe communicating with the upper portion of the vertical discharge pipe and extending in the front-rear direction.

The pre-harvest processing device 3 includes a raking device 3A that rakes up the grain culm in the field and conveys it backward, a cutting blade device 3B that cuts the base of the grain culm that is conveyed backward, and a cutting blade device 3B that conveys the grain culm backward. It is composed of an auger device 3C that collects the collected grain culms to the left side and a feeder house 3D that conveys the collected grain culms to the threshing device 4. - 特許庁

<Structure around cutting blade device>
The auger device 3C includes an auger drum 100 having a cylindrical portion and a spiral plate wound around the outer circumference of the cylindrical portion. Further, a table bottom plate 101 is positioned below the auger drum 100 and extends forward from below the auger drum 100 so as to cover the entire lateral width of 100 of the auger drum.

The front end of the table bottom plate 101 is connected to the rear end of the cutting blade device 3B. The cutting blade device 3B has a movable blade 110 and a fixed blade 111. The fixed blade 111 is a so-called finger-type cutting blade having a projection projecting forward. That is, the movable blade 110 is a mountain-shaped hair clipper blade, and is reciprocally oscillated left and right by a reciprocating drive unit (not shown). A plurality of finger portions 112 of the fixed blade 111 are provided at predetermined intervals in the left-right direction, and slits are formed in upper and lower middle portions of the finger portions 112 . Since the movable blade 110 passes through the slit of the finger portion 112 in the process of reciprocally swinging, and the cutting target is pressed against the upper and lower portions of the finger portion 112 than the slit, the movable blade 110 enters the slit. The disconnect target is disconnected.

<Pickup device>
A pickup device 120 is provided near the cutting blade device 3B. In the pick-up device 120, a rod 122 having a guide 123 at its tip is rotatable up and down around the lateral axis of a fulcrum portion 121 behind the cutting blade. Rod 122 is connected to fulcrum portion 121 via support portion 124 and connecting portion 126 .

The cutting blade device 3B is fixed to the front surface of the front end portion of the table bottom plate 101, and the fulcrum portion 121 of the pickup device 120 is fixed to the upper surface of the front end portion of the table bottom plate 101. As shown in FIG. A cover 128 covers the upper portion between the mounting portion of the cutting blade device 3B and the mounting portion of the pickup device 120 . The cover 128 also prevents mud from entering the table bottom plate 101 due to its mountain shape.

The support portion 124 is formed of a round steel that extends linearly forward from a curved portion so that the rear end portion is wound around the upper portion of the shaft rod of the fulcrum portion 121 . A connection portion 126 is connected to the front end portion of the support portion 124 at the middle portion in the vertical direction.

An intermediate portion of the rod 122 in the front-rear direction is connected to the upper end portion of the connecting portion 126 . The rod 122 and the guide 123 are also made of round steel, and the parts constituting the pick-up device 120 are generally made of round steel in order to prevent culms from being caught.

A reinforcing portion 125 made of a plate material is provided below the front portion of the rod 122 to connect the front lower edge of the rod 122 and the front edge of the connecting portion 126 .

The pickup device 120 configured as described above picks up crops from the ground by the guide 123 having a steep front portion and a gentle rear portion, and places them on the upper edge of the rod 122 . The crop on the upper edge of the rod 122 is guided along the rod 122 to the rear of the cutting blade device 3B and carried onto the table bottom plate 101. - 特許庁In the process of carrying the crop onto the table bottom plate 101 , the crop may ride on the rear part of the support part 124 . stagnation of transportation is suppressed. Note that the wire diameter of the guide 123 is formed thinner than that of the rod 122 .

The pickup device 120 is lifted by contacting the front end of the guide 123 with the ground, and the upper limit of the lifted position is regulated by the rear end of the support portion 124 as a stopper.

When the contact with the ground is lost, the tip portion side of the guide 123 descends due to its own weight.

The pickup devices 120 are mainly used in pairs. It can be integrally attached to and detached from the auger device 3C by the connector 127 so that it can be arranged in a positional relationship such that it is sandwiched on the left and right with respect to the assumed introduction position of the target crop to the auger device 3C. The pick-up devices integrated in this way are attached to the auger device 3C for the number of lines to be taken in and used. Further, the connection body 127 can change the mounting position on the left and right with respect to the auger device 3C.

In addition, as shown in FIG. 11, the rod 122 can also be formed in a shape in which the tip portion is gently inclined to be almost horizontal without providing a guide. In this case, it is preferable to provide a chevron cover 121A on the base.

<Feeder house>
The feeder house 3D is rotatably supported by a laterally extending support shaft 11 provided in the front portion of a tubular frame 10 having a substantially rectangular vertical cross section. a rotating body 14 fixed to a rotating shaft 13 provided at the rear portion of the frame 10 and extending in the left-right direction; A conveyor 18 is formed by a pair of left and right chains 15 wound around a pair of left and right sprockets.

The output rotation of the engine E is transmitted to the rotary shaft 13, and slats 16 for conveying the culms rearward are provided on the pair of left and right chains 15 at predetermined intervals in the front-rear direction.

As shown in FIGS. 2 to 5, the left portion of the support shaft 11 is provided adjacent to the right side of the left wall 10A of the frame 10. It is fixed to the front part of the support arm 20A made of extending flat steel, and the right part of the support shaft 11 is provided adjacent to the left side of the right wall 10B of the frame 10, that is, the inner circumference of the frame 10. It is fixed to the front portion of a support arm 20B made of a flat steel extending in the front-rear direction provided in the portion.

The left portion of the rotating shaft 13 is rotatably supported by the left wall 10A of the frame 10, and the right portion of the rotating shaft 13 is rotatably supported by the right wall 10B of the frame 10. As shown in FIG.

The support arm 20A is provided adjacent to the left side of the left wall 10A of the frame 10, that is, the rear portion of a pivot arm 21A made of angle steel extending in the front-rear direction provided on the outer peripheral portion of the frame 10. is connected via a connecting pin 22A made of round steel extending in the left-right direction. Further, the left wall 10A of the frame 10 is formed with an opening through which the connecting pin 22A is inserted. The diameter of the opening is formed to be larger than the diameter of the connecting pin 22A.

Similarly, the support arm 20B is provided adjacent to the right side of the right wall 10B of the frame 10; 21B is connected via a connecting pin 22B made of round steel extending in the left-right direction. Further, the right wall 10B of the frame 10 is formed with an opening through which the connecting pin 22B is inserted. The diameter of the opening is formed to be larger than the diameter of the connecting pin 22B.

As a result, it is possible to eliminate the members arranged behind the rotating body 12, prevent the culms from being entangled behind the rotating body 12, and efficiently convey the culms to the threshing device 4. can. Further, when a predetermined number of culms or more are conveyed from the auger device 3C, the rotating body 12 moves upward so that the number of culms remaining below the rotating body 12 can be reduced.

The support arm 20A and the rotating arm 21A are connected by three connecting pins 22A provided at predetermined intervals in the front-rear direction. Further, the connecting pin 22A arranged on the frontmost side connects a rotating arm 24A, a rotating arm 21A, and a support arm 20A, which will be described later, in order from the left side.

Similarly, the support arm 20B and the rotating arm 21B are connected by three connecting pins 22B provided at predetermined intervals in the front-rear direction. Further, the connecting pin 22B arranged on the frontmost side connects a rotating arm 24B, a rotating arm 21B, and a support arm 20B, which will be described later, in order from the right side.

As a result, the supporting arm 20A and the rotating arm 21A, and the parallel supporting arm 20B and the rotating arm 21B can be firmly connected to prevent deformation of the supporting arms 20A, 20B and the rotating arms 21A, 21B.

A vertically extending rotating arm 24A made of channel steel is fixed to the upper surface of the rotating arm 21A. A front portion of position adjusting means 25A extending in the front-rear direction is connected to the rear portion of the rotating arm 24A. The rear portion of the position adjusting means 25A is rotatably supported by a fixing pin 26A provided on the left wall 10A of the frame 10 and extending in the left-right direction. A portion is formed, and two nuts 27A are attached to the threaded portion.

Similarly, a vertically extending rotating arm 24B made of channel steel is fixed to the upper surface of the rotating arm 21B. Further, the front portion of position adjusting means 25B extending in the front-rear direction is connected to the rear portion of rotating arm 24B. The rear portion of the position adjusting means 25B is rotatably supported by a fixing pin 26B provided on the right wall 10B of the frame 10 and extending in the left-right direction. A portion is formed, and two nuts 27B are attached to the threaded portion.

As a result, tilting of the rotating body 12 in the front-rear direction can be suppressed by operating the position adjusting means 25A and 25B.

A support shaft extending in the left-right direction is provided on the upper portion of the rotating arm 24A, and the lower portion of a rod 29A made of round steel extending in the vertical direction is rotatably supported by the support shaft. The upper portion of the rod 29A is inserted through an opening formed in a bracket 30A provided on the left side of the upper wall 10C of the frame 10. As shown in FIG.

A plate-like plate 32A having a circular shape and a spring 33A having a predetermined spring coefficient are mounted on the rod 29A. A threaded portion is formed on the lower side of the rod 29A, and two nuts 34A are attached to the threaded portion.

Similarly, a support shaft extending in the horizontal direction is provided on the upper portion of the rotating arm 24B, and the lower portion of a rod 29B made of round steel extending in the vertical direction is rotatably supported on the support shaft. there is The upper part of the rod 29B is inserted through an opening formed in a bracket 30B provided on the right part of the upper wall 10C of the frame 10. As shown in FIG.

A plate-like plate 32B having a circular shape and a spring 33B having a predetermined spring coefficient are mounted on the rod 29B. A threaded portion is formed on the lower side of the rod 29B, and two nuts 34B are attached to the threaded portion.

Thereby, the compressed lengths of the springs 33A arranged on the left side of the frame 10 and the compressed lengths of the springs 33B arranged on the right side of the frame 10 can be adjusted respectively. Inclination can be suppressed.

In this embodiment, the spring coefficient of the spring 33A arranged on the right side of the frame 10 is smaller than that of the spring 33A arranged on the left side of the frame 10. As shown in FIG.

As a result, the rotating body 12 to which many culms are conveyed from the auger device 3C can be easily moved upward to reduce the number of stalks remaining below the rotating body 12 .

A portion of the rotating arm 24A extending upward from the bracket 30A and the rotating arm 2
A portion of 4B extending upward from the bracket 30B is connected by a connecting member 35 made of channel steel extending in the left-right direction.

As a result, the inclination of the rotating body 12 in the vertical direction can be further suppressed, and the culms can be efficiently conveyed by the threshing device 4 .

A connection member (not shown) made of channel steel extends in the left-right direction at the rear portion of the support arm 20A to which the left portion of the support shaft 11 is fixed and the rear portion of the support arm 20B to which the right portion of the support shaft 11 is fixed. can also be concatenated with

As a result, compared with the case where the rotating arm 24A and the rotating arm 24B are connected only by the connecting member 35, the inclination of the rotating body 12 in the vertical direction can be further suppressed, and the culms can be efficiently conveyed by the threshing device 4. can be done.

As shown in FIG. 1, a guide plate 38 made of flat steel is provided on the front portion of the upper wall 10C of the frame 10 so as to extend forward downward. As a result, the culms entangled with the chains 15 and carried around can be efficiently dropped below the rotating body 12. - 特許庁

A sensor (not shown) that measures the amount of upward movement displacement centered on the fixed pin 26A at the front of the rotating arm 21A, and an upward movement centered on the fixed pin 26B at the front of the rotating arm 21B. Sensors (not shown) for measuring the amount of displacement are provided, and when the amount of movement displacement measured by these sensors exceeds a set value, an alarm provided in the control unit 5 is sounded to notify the operator of the abnormality. It is preferable to let us know. As a result, application of excessive tension to the chain 15 can be prevented, and breakage of the chain 15 can be prevented.

A sensor (not shown) such as a strain gauge is provided to measure the external force applied to the cylindrical cylindrical portion of the rotating body 12. When the external force measured by these sensors exceeds a set value, the control unit It is preferable to sound an alarm provided at 5 to notify the operator of the abnormality. As a result, it is possible to prevent excessive external force from being applied to the cylindrical portion of the rotating body 12 and prevent deformation of the cylindrical portion of the rotating body 12 .

<Scraping device>
Next, the scraping reel 50 of the scraping device 3A will be described. As shown in FIG. 6, a support arm 52A having a base portion fixed to a rotating shaft 51 is provided on the left side of the scraping reel 50, and a base portion is fixed to the rotating shaft 51 on the right portion of the scraping reel 50. A support arm 52B is provided.

At each top of the rake reel 50, a tine support portion 53 made of a round steel extending in the left-right direction is provided between the left support arm 52A and the right support arm 52B. Resin tines 54 are attached to the tine support portion 53 at a predetermined interval in the left-right direction.

As viewed from the front, the tine 54 attached to the left portion of the tine support portion 53 that moves in front of the feeder house 3D in the tine support portion 53 is positioned downward and to the right so that the lower portion of the tine 54 is positioned to the right of the upper portion of the tine 54. It is worn in a posture that extends toward the As a result, the culms conveyed from the raking device 3A to the auger device 3C can be prevented from entangling with the raking auger 60 of the auger device 3C.

Next, the tines 54 will be explained. As shown in FIG. 7(a), the upper portion of the tine 54 is formed with an opening 55 through which a bolt or the like attached to the tine support portion 53 is inserted, and an engagement groove 56 that engages with the tine support portion 53. there is A notch 57 having a narrow rear portion and a wide front portion is formed below the engaging groove 56 . As a result, as shown in FIG. 7(b), when a large external force is applied to the tines 54 from the culms in the field, the tines 54 are bent rearward around the front side portion of the notch 57. When the tines 54 are bent backward more than a predetermined amount, the rear portions of the cutouts 57 collide with each other to prevent the tines 54 from being bent backward, thereby preventing damage to the tines 54 .

The rotation speed of the output rotation of the engine E is transmitted to the rotation shaft 51 while being increased or decreased by a transmission gear (not shown). The diameters of the boss portions of these speed change gears are formed to be the same diameter in order to facilitate the switching operation between speed reduction and acceleration.

<Auger device>
Next, the scraping auger 60 of the auger device 3C will be described. As shown in FIG. 8( a ), the scraping auger 60 is fixed to a rotating shaft 62 that extends in the left-right direction and is installed on the left and right walls of the auger frame 61 .

On the right side of the outer periphery of the raking auger 60, there is a transport for moving the grain culm transported from the raking device 3A to the left side of the outer periphery of the raking auger 60 positioned in front of the communication port of the feeder house 3D. A spiral 63 is provided, and on the left side of the outer periphery of the raking auger 60, raking fingers 64 which can freely appear and move at a predetermined interval in the horizontal direction for conveying the grain culms that have moved to the left side to the feeder house 3D. is provided.

As shown in FIG. 8(b), a cutting edge 65 for cutting culms is provided in the vicinity of the portion of the bottom wall of the auger frame 61 through which the raking fingers 64 pass. In addition, the bottom wall of the auger frame 61 is formed in a gentle arc shape having a convex portion downward. As a result, the long stems of the grain culms can be cut and the grain culms can be efficiently conveyed to the feeder house 3D.

The output rotation of the engine E is transmitted to the pre-reaping treatment device 3, the threshing device 4, and the grain tank 6 via a reaping clutch, a threshing clutch, and a discharge clutch (not shown). These reaping clutches and the like are composed of a drive pulley, a belt, and a passive pulley, and the drive pulley is provided with braking means between the outer ring portion and the inner ring portion. As a result, it is possible to prevent excessive tension from being applied to the belt wound around the drive pulley and the passive pulley, thereby preventing breakage of the belt.

Claims (2)

A pick-up device (120) configured to be vertically rotatable by a fulcrum (121) located behind the cutting blade device (3B) and picking up crops in front of the cutting blade device (3B), wherein the pickup device (120) ) to the pre-reaping treatment device (3) can be changed in the lateral direction with respect to the cutting blade device (3B). A combine according to claim 1, comprising a connector (127) for connecting a plurality of said pick-up devices (120), wherein the attachment position of this connector (127) to the pre-harvest treatment device (3) can be changed.