JP2012040019A5 - - Google Patents

Description

Combine

  The present invention relates to a combine that is supported by a traveling machine body so as to be movable up and down so as to follow a grounding of a cutting part.

Conventionally, for example, Patent Document 1 discloses a combine as described above .

JP 2006-211972 A (paragraphs [0022], [0024], [0041], [0043], FIGS. 1, 8, 9, and 18)

An object of the present invention, even if also soft and weak when the field surface is hard to provide a Turkey Nbain can be revealing a smooth ground sliding of the ground portion.

This onset Ming,
A cutting part supported on the front part of the self-propelled traveling machine body so as to be swingable up and down,
A weed bud provided at the lower part of the cutting part along the longitudinal direction of the aircraft,
A weeding tool supported at the tip of the weed fold,
Elevating means provided over the mowing part and the traveling machine body, and elevating and lowering the mowing part within a predetermined elevating range;
Balance support means provided between the cutting unit and the traveling machine body, capable of receiving the weight of the cutting unit and elastically deforming to support the cutting unit;
A flat part that is disposed below the weed fence and supported by the weed fence, and that can be grounded to a farm scene when the mowing part is located at a lower work site in the lifting range. And a grounding portion having
When the mowing part is located at the work site, the mowing part is configured to follow the ground on the field scene by the grounding of the grounding part and the elastic deformation of the balance support means,
On the upper surface of the front portion of the flat portion, a connecting portion in a state along the vertical direction is erected, and a supporting portion in a state along the vertical direction is connected to the weed ridge,
The front part is supported by the weed ridge by the connection between the connection part and the support part,
The rear portion of the flat portion is supported such that the relative position with respect to the weed pod in the vertical direction can be changed.

In the present invention,
It is preferable that the grounding portion is provided with a front rising inclination portion that is in a forward rising posture and is connected to the flat portion in front of the connecting portion.

In the present invention,
It is preferable that the grounding portion is provided with a rearward rising inclined portion that is in a rearward rising posture and is connected to the flat portion behind the supporting portion of the rear side portion with respect to the weed ridge.

In the present invention,
The connecting part and the support part are plate members in a state along the vertical direction and the front-rear direction,
It is preferable that the connecting portion and the support portion are connected to each other by a fastener from the left-right direction in a state where they are overlapped on the left and right.

In the present invention,
A screw is provided across the bracket and the rear support,
It is preferable that the relative position of the rear portion with respect to the weed fold can be set by fastening the screw.

Side view of the entire combine Top view of the entire combine Front view of lifting operation mechanism and balance support means Side view of the lifting mechanism Side view of balance support means Longitudinal side view of balance support means Longitudinal plan view of balance support means Explanatory drawing showing the operating range of the balance support means Hydraulic circuit diagram of lifting cylinder (B) is a side view of the grounding part in the grounded state when the farm scene is hard, and (b) is a side view of the grounded part in the grounded state when the farm scene is weak. It is a side view of posture change means provided with another implementation structure, (a) is a side view in a posture adjustment state when the farm scene is hard, and (b) is a posture adjustment state when the farm scene is soft Side view at

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a combine according to an embodiment of the present invention. FIG. 2 is a plan view of the combine according to the embodiment of the present invention. As shown in these drawings, a combine according to an embodiment of the present invention is a self-propelled vehicle that has a driving unit that is self-propelled by a crawler-type traveling device 1 and that is equipped with a driver's seat 2. A cutting part 10 connected to the front part of the machine frame 3 of the running machine, and a threshing device 5 and a grain tank 6 provided on the rear side of the machine frame 3 of the self-running machine are provided.

  This combine harvests rice and wheat. That is, the cutting unit 10 is configured so that the base 11b of the preprocessing unit frame 11 is located at the front of the body frame 3 by the lifting operation mechanism 50 provided across the preprocessing unit frame 11 and the body frame 3 of the cutting unit 10. Is pivoted with respect to the self-propelled machine body around the axis X of the self-propelled machine body which is connected to the support body 4 positioned in a relatively rotatable manner. A descending work state in which a plurality of grounding portions 18 arranged side by side are grounded on the ground, and one clipper-shaped mowing device 12 located on the rear side of the grounding portion 18 is located near the ground, and the grounding The part 18 is moved up and down to the lifted non-working state in which the part 18 is raised from above the ground. When the cutting unit 10 is in the descending work state and the self-propelled machine body is caused to travel, the cutting unit 10 is planted cereal by the plurality of weeding tools 14 that are positioned in the lateral direction of the self-propelling machine body at the front part of the cutting unit 10. The culm is divided into a reaping target and a non-reaping target, and the cultivated cereal culm to be reaped is guided to the trigger path 15 located behind each of the weeding tools 14, and the cultivated cereal guided to the respective trigger path 15 A wrinkle is caused and processed by the device 16 and processed by the reaping device 12, and the harvested cereal from the reaping device 12 is conveyed rearward by the supply device 17 to start the threshing feed chain 5 a of the threshing device 5. To supply. The threshing device 5 feeds the tip side to a handling room (not shown) while holding the stock side of the harvested cereal by the threshing feed chain 5a and transporting it toward the rear of the machine, and rotates the tip side. Threshing is performed by a trunk (not shown). The grain tank 6 collects and stores the threshed grains conveyed from the threshing device 5.

As shown in FIGS. 1, 2, and 3, the pretreatment unit frame 11 includes a main frame 11a formed of a transmission case in which a base 11b is rotatably supported around the axis X on the support body 4, It has a weed ridge 13 extending forward from the plurality of locations aligned in the lateral direction of the self-propelled machine body at the front end of the main frame 11a. Each of the weeding implements 14 is provided at the extending end of the weeding basket 13. Each grounding portion 18 is provided in the lower part of the weed ridge 13 near the rear of the weeding tool 14.

  FIG. 3 shows the structure of the elevating operation mechanism 50 in a front view of the self-propelled machine body. FIG. 4 shows the structure of the elevating operation mechanism 50 in a side view of the self-propelled aircraft. As shown in these drawings, the elevating operation mechanism 50 is connected to a pair of left and right brackets 52, 52 fixed to the support body 4 so that a connecting shaft portion 53b is rotatable around an axis 53a that faces the self-propelled machine body. And a hydraulic single-acting cylinder connected over a bracket 58 fixed to the free end side shaft portion 53d of the swing operation body 53 and a bracket 54 fixed to the body frame 3. An elevating cylinder 51 is provided. The free end side shaft portion 53d of the swing operation body 53 and a locking rod 55 supported by a pair of left and right brackets 56, 56 fixed to the swing operation body 53 sandwich the main frame 11a. Thus, the swing operation body 53 is locked to the main frame 11a so as to be swingable integrally. The free end side shaft portion 53d of the swing operation body 53 abuts on a protection plate 11c provided on the main frame 11a and pushes up the main frame 11a. The locking rod 55 is locked to the main frame 11 a via the mediating member 57. As shown in FIGS. 3 and 4, the spiral shaft 60 rotatably supported by the pair of left and right brackets 56, 56 is rotated in the forward rotation direction and the reverse rotation direction by the electric motor 61, via the lateral feed member 62. The main frame 11a is moved along the input shaft 63 which is also used as a connection shaft between the main frame 11a and the support body 4, and the cutting portion 10 is connected to the self-propelled machine body at the connection position for the intermediate operation and the cutting operation. The position is changed to the connection position for use.

That is, when hydraulic pressure is supplied to the lifting cylinder 51, the lifting operation mechanism 50 is operated by extending and lowering the main frame 11 a via the swing operation body 53 by the lifting cylinder 51 being extended by the hydraulic pressure. When the hydraulic pressure is discharged from the lifting / lowering cylinder 51 by operating the lifting / lowering part 10, the lifting / lowering cylinder 51 is shortened by the weight of the cutting part 10, and the main frame 11 a is moved downward and swinging to lower the cutting part 10. To do. The lifting cylinder 51 corresponds to the “lifting means” of the present invention.

  As shown in FIGS. 3, 5, 6, and 7, balance support means 20 is provided at the front portion of the body frame 3. FIG. 3 shows the structure of the balance support means 20 in a front view of the self-propelled machine body. FIG. 5 shows the structure of the balance support means 20 in a side view of the self-propelled aircraft. FIG. 6 is a longitudinal side view of the balance support means 20. FIG. 7 is a longitudinal plan view of the balance support means 20. As shown in these drawings, the balance support means 20 includes a spring support 26 fixed to the body frame 3 and a base end supported by a pair of support shafts 27 and 27 fixed to the spring support 26. A side spring holder 25 and a tip side spring holder 28; a balance spring 21 made of a coil spring provided inside the base end side spring holder 25; the tip end side spring holder 28 and the spring cover 30; And a connecting rod 29 attached to the top. The connecting rod 29 connects the proximal end side spring holder 25 and the distal end side spring holder 28 so as not to be separated from each other by a set interval or more, thereby making the balance spring 21 have an initial elastic deformation. The pair of support shafts 27, 27 slidably supports the tip side spring holder 28. The connecting rod 29 connects the proximal end side spring holder 25 and the distal end side spring holder 28 so as to be freely accessible. The spring cover 30 is telescopic.

  When the cutting unit 10 is positioned in the upper part B (see FIG. 8) of the lifting range A with respect to the self-propelled machine body, the free end side shaft part 53d of the swing operation body 53 is separated upward from the distal end side spring holder 28 and balanced. The support means 20 does not support the cutting unit 10. When the cutting part 10 is positioned at the lower work part C (see FIG. 8) in the lifting range A, the free end side shaft part 53d of the swing operation body 53 comes into contact with the distal end side spring holder 28, The balance spring 21 is compressed to a deformed state exceeding the initial elastically deformed state by the weight of the cutting unit 10, and the balance support means 20 applies an ascending operating force to the main frame 11 a via the swing operating body 53 by the balance spring 21. The mowing unit 10 is supported so as to be applied, and the grounding pressure of the mowing unit 10 is reduced so that the mowing unit 10 moves up and down with respect to the self-propelled machine body in response to a change in the ground reaction force of the grounding unit 18.

  FIG. 9 shows a hydraulic circuit of the lifting operation mechanism 50. As shown in this figure, when the control valve V of the lift cylinder 51 is switched to “neutral”, the supply and discharge of hydraulic pressure to the lift cylinder 51 is stopped. Even in the state in which the control valve V is operated to be “neutral”, the elevating cylinder 51 has a difference between the grounding reaction force and the lifting operation force by the balance spring 21 depending on the magnitude of the grounding reaction force acting on the grounding portion 18. A slight extension operation is performed for the resultant force and for the inclusion of bubbles in the pressure oil, etc., thereby allowing the trimming unit 10 to move up and down relative to the self-propelled machine body.

  That is, in performing the work, the control valve V is switched to “down” by the elevating lever 70. Then, the lifting cylinder 51 is drained by the control valve V and shortened, and the cutting unit 10 is lowered. When the grounding part 18 comes into contact with the lowering of the cutting part 10, the control valve V is switched to "neutral". Then, the cutting unit 10 is grounded and supported by the grounding unit 18, the free end side shaft portion 53 d and the tip side spring holder 28 come into contact with each other, and the balance support means 20 reduces the grounding pressure of the cutting unit 10 by the balance spring 21. Let As a result, the mowing unit 10 moves up and down with respect to the self-propelled aircraft in response to a change in the ground reaction force of the grounding unit 18, and enters a lowering work state in which the grounding unit 18 follows the ground. For this reason, the cutting unit 10 performs the cutting operation while keeping the cutting height by the cutting device 12 constant or substantially constant regardless of the forward / backward inclination of the traveling machine body.

  When the mowing unit 10 is raised, the control valve V is switched to “rise” by the lift lever 70. Then, the elevating cylinder 51 is supplied with hydraulic pressure from the control valve V and is extended, and the cutting unit 10 is raised. When the mowing unit 10 rises to a desired connection height such as a stroke end, the control valve V is switched to “neutral”. Then, the raising / lowering cylinder 51 stops and the cutting part 10 becomes desired connection height.

FIG. 10 is a side view of each grounding portion 18. As shown in this figure, each grounding portion 18 includes a flat portion 18A that can be grounded on a farm scene, and connects a front rising slope portion 18a in a forward rising posture to a front end portion of the flat portion 18A, and also includes a flat portion 18A. by connecting up the inclined portion 18b of the rear raised position to the rear end, it is constituted by a sheet metal plate sled. Each grounding portion 18 is supported by the weed ridge 13 through posture changing means 40 having a left and right connecting shaft 41 disposed on the front end side of the grounding portion 18. The connecting shaft 41 corresponds to the “left-right member” of the present invention.

As shown in FIG. 10, the posture changing means 40 includes the connecting shaft 41 and is connected to the rear end portion of the grounding portion 18 and the weed ridge 13 in front of the rearward rising inclined portion 18 b. A spring 42 is provided.

The connecting shaft 41 is erected on the upper surface on the front end side of the grounding portion 18 and is connected to the connecting member 18c (corresponding to the “connecting portion” of the present invention) in the vertical direction and the front-rear direction. 13 is connected with a bracket and is connected to the support portion 13a in a state along the vertical direction and the front-rear direction so as to be relatively rotatable, and the front end side of the grounding portion 18 is rotatable to the weed ridge 13 I support it. The coil spring 42 urges the rear end side of the grounding portion 18 downward. That is, the front portion of the flat portion 18A is supported by the weed ridge 13 by the connection of the connecting member 18c and the support portion 13a, and the rear portion of the flat portion 18A changes the relative position with respect to the weed ridge 13 in the vertical direction. It is supported freely. In addition, the connection member 18c and the support part 13a are connected by the connection shaft 41 in a state of being overlapped on the left and right.

  As a result, when the hardness of the field scene changes, the posture changing means 40 changes the posture in which the ground contact portion 18 swings up and down around the traveling machine body lateral axis of the connecting shaft 41 located on the front end side thereof as a fulcrum P. Let the grounding part 18 perform itself.

That is, FIG. 10 (a) is a side view showing the ground contact state of the ground contact portion 18 when the farm scene S is hard. FIG. 10B is a side view showing the ground contact state of the ground contact portion 18 when the farm scene S is soft.
As shown in these drawings, when the farm scene S is hard, the posture changing means 40 elastically deforms the coil spring 42 by the ground reaction force from the farm scene S acting on the grounding section 18, and the grounding section 18 moves to the fulcrum P. The grounding part 18 is caused to perform a posture change that becomes a mounting posture swinging up and swinging around, and the grounding part 18 is moved to the farm scene S between the front rising inclined part 18a on the front end side and the rear rising inclined part 18b on the rear end side. On the other hand, make the posture along the longitudinal direction of the vehicle.

On the other hand, when the farm scene S is soft, the posture changing means 40 changes the posture in which the ground contact portion 18 is lowered and swung around the fulcrum P by the downward biasing force of the ground contact portion 18 by the coil spring 42. The grounding unit 18 is moved to the front end side regardless of the posture change of the cutting unit 10 to the front lowering side due to the sinking of the grounding unit 18 into the farm scene S. It is made into the attitude | position along the traveling body front-back direction with respect to the agricultural field S between the side rear-up inclination part 18b.

FIG. 11 is a side view of posture changing means 45 having another implementation structure. As shown in this figure, the posture changing means 45 of another embodiment includes a connecting shaft 41 disposed on the front end side of the grounding portion 18, a connecting screw shaft provided across the rear end side of the grounding portion 18 and the weed ridge 13. 46. The connecting screw shaft 46 corresponds to the “screw” of the present invention.

  The connecting shaft 41 connects the connecting member 18c disposed on the front end side of the grounding portion 18 and the support portion 13a of the weed ridge 13 so as to be relatively rotatable, and the front end side of the grounding portion 18 is connected to the weed ridge 13. It is rotatably supported.

The lower end of the connecting screw shaft 46, the connecting bracket 18d erected on the rear end portion of the ground portion 18 (corresponding to "bracket" of the present invention), are relatively rotatably connected via a connecting pin 47 ing. The upper end side of the connecting screw shaft 46 is inserted through a support portion 13b (corresponding to the “rear support portion” of the present invention) connected to the weed ridge 13 by attaching a bracket so that the position can be changed, and The positioning screw body 48 is disposed on the upper and lower sides of the support portion 13b and attached to the connecting screw shaft 46, and is fixed to the support portion 13b. That is, as in the above-described embodiment, the front portion of the flat portion 18A is supported by the weed ridge 13 by the connection of the connecting member 18c and the support portion 13a, and the rear portion of the flat portion 18A is separated in the vertical direction. The relative position with respect to the grass basket 13 is supported in a freely changeable manner.

In this posture changing means 45, the positioning screw body 48 is rotated and adjusted by an artificial operation, and the interval at which the rear end side of the grounding portion 18 and the weed ridge 13 are connected by the connecting screw shaft 46 is changed. The mounting angle of the grounding portion 18 with respect to the weed ridge 13 is changed by swinging the grounding portion 18 up and down around the traveling machine body lateral axis of the connecting shaft 41 as a fulcrum P.

FIG. 11 (a) is a side view showing the ground contact state of the ground contact portion 18 when the farm scene is hard. FIG. 11B is a side view showing the ground contact state of the ground contact portion 18 when the farm scene is soft.
As shown in these drawings, when the farm scene is hard, the connection interval between the grounding portion 18 and the weed ridge 13 by the connection screw shaft 46 is artificially adjusted to be a small interval. Then, the posture changing unit 45 changes the posture between the grounding portion 18 and the weed ridge 13 by the connecting screw shaft 46, and changes the posture in which the grounding portion 18 is mounted to swing around the fulcrum P. And the grounding portion 18 is set in a posture along the traveling body longitudinal direction with respect to the farm scene between the front rising slope portion 18a on the front end side and the rear rising slope portion 18b on the rear end side.

  On the other hand, when the farm scene is soft, the connection interval between the grounding portion 18 and the weed ridge 13 by the connection screw shaft 46 is artificially adjusted so as to be a large interval. Then, the posture changing unit 45 changes the posture between the grounding portion 18 and the weed ridge 13 by the connecting screw shaft 46 and changes the posture in which the grounding portion 18 is lowered and swung around the fulcrum P. Regardless of the change in the posture of the cutting unit 10 toward the front lowering side due to the sinking of the grounding unit 18 into the farm scene S, the grounding unit 18 is moved forward and the rear end side is moved upward. It is set as the attitude | position along the traveling body front-back direction with respect to the agricultural field scene between the inclination parts 18b.

[Another Example]
The object of the present invention can be achieved even if the configuration using the elastic restoring force of the rubber material is adopted instead of the coil spring 42. Accordingly, the coil spring 42, the rubber material, and the like are collectively referred to as an ammunition 42.

10 Cutting part
13 Weed
13a support
13b Support part (rear support part)
14 Weeding tool 18 Grounding part
18a Front rising slope
18b Back slope part
18c connecting member (connecting part)
18d Connecting bracket (bracket)
20 Balance support means
41 Connecting shaft (member facing left and right)
46 Connecting screw shaft (screw)
51 Lifting cylinder (lifting means)
A Lifting range
C Work site

Claims (5)

A cutting part supported on the front part of the self-propelled traveling machine body so as to be swingable up and down,
A weed bud provided at the lower part of the cutting part along the longitudinal direction of the aircraft,
A weeding tool supported at the tip of the weed fold,
Elevating means provided over the mowing part and the traveling machine body, elevating and lowering the mowing part within a predetermined elevating range;
Balance support means provided between the cutting unit and the traveling machine body, capable of receiving the weight of the cutting unit and elastically deforming to support the cutting unit;
A flat part that is disposed below the weed fence and supported by the weed fence, and that can be grounded to a farm scene when the cutting part is located at a lower work site in the lifting range. And a grounding portion having
When the mowing part is located at the work site, the mowing part is configured to follow the ground on the field scene by the grounding of the grounding part and the elastic deformation of the balance support means,
On the upper surface of the front portion of the flat part, a connecting part in a state along the vertical direction is erected, and a supporting part in a state along the vertical direction is connected to the weed ridge,
The front part is supported by the weed ridge by the connection between the connection part and the support part,
Rear portion of the flat portion, Combine which is supported freely change the relative position with respect to the partial grass rod in the vertical direction. The combine according to claim 1, wherein the grounding portion includes a forward rising inclined portion that is in a forward rising posture and is connected to the flat portion in front of the connecting portion. The back-up inclination part which was the back raising attitude | position in the said grounding part, Comprising: The back rising inclination part connected with the said flat part behind the support location of the said rear part with respect to the said weed fence is provided. Combine. The connection part and the support part are plate members in a state along the vertical direction and the front-rear direction,
The combine according to any one of claims 1 to 3, wherein the connecting portion and the support portion are connected to each other by a fastener from a left-right direction in a state of being overlapped on the left and right. A bracket is erected on the upper surface of the front part, and a rear support part is connected to the weed fence,
A screw is provided across the bracket and the rear support,
The combine according to any one of claims 1 to 4, wherein a relative position of the rear portion with respect to the weed ridge can be set by fastening the screw.

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