JP3308172B2 - Combine harvester slide structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing main frame in a mowing pre-processing section, which is configured to be able to be driven up and down around a horizontal axis by a hydraulic cylinder mounted so that the position thereof cannot be changed in the horizontal direction with respect to the machine body. The present invention also relates to a combine harvester sliding structure in which a vertically movable rocking boss of the mowing main frame is slidably supported in a lateral direction with respect to the body frame.

[0002]

2. Description of the Related Art In a combine having a small number of cutting lines, the cutting width of the pre-cutting processing unit is smaller than the right and left contact widths of the right and left crawler traveling devices in the traveling machine body. , The crawler traveling device approaches the uncut culm. Therefore, when performing the round cutting work in the wetland, the mud raised by the crawler traveling device on the uncut land settles down to the field, the mud piled up at the root of the uncut grain culm, or this raised mud. There is a possibility that uncut culms may be pushed down, and in order to solve such a problem, means for laterally moving the pre-cutting unit as described above has been proposed.

In other words, the pre-cutting unit is configured to be able to move laterally with respect to the traveling machine body, and during the round-cutting operation, the pre-cutting unit is extended to the uncut land side from the crawler traveling device on the uncut land side. When the crawler traveling device on the uncut land sinks into the field, the mud piled up when the crawler traveling device on the uncut land sinks into the field accumulates at the root of the uncut grain culm, or it is uncut with this raised mud. It is possible to prevent the culm from being pushed down, and also to cut and run by cutting through the middle of the uncut field, so-called middle splitting operation, so that the cutting pretreatment unit is located in front of the traveling machine. By moving laterally, the cutting width of the pre-cutting processing unit is positioned within the contact width of the left and right crawler traveling devices, so that the left and right crawler traveling devices can perform the cutting traveling without stepping down the left and right uncut grain culm. It is.

[0004] As a slide structure of such a combine harvester, for example, one disclosed in Japanese Patent Application Laid-Open No. 5-153841 has been proposed. In this cutting section slide structure, the lifting oscillating boss section of the cutting main frame of the cutting pre-processing section is slidably supported in the lateral direction with respect to the machine frame, and the hydraulic cylinder is mounted on the machine frame around the horizontal axis. It is pivotally connected in a vertically swayable and laterally fixed position, and a laterally long receiving support member is attached to the rod end of the hydraulic cylinder, and a horizontal receiving support member is attached to the cylinder pressing action portion of the cutting main frame. A mounting support member that is long in the direction, and the receiving support member and the mounting support member described above are slidably engaged with each other in a lateral direction via an engagement metal fitting, and the mowing is performed at an arbitrary lateral sliding position. The pre-processing unit can be driven up and down by a hydraulic cylinder. Also, in this conventional structure,
At one end in the longitudinal direction of the receiving support member provided on the hydraulic cylinder side, a support member that is swingable around a swing axis of the cutting main frame is provided, and the support member and the cutting main frame are provided. A horizontal feed screw shaft is provided as a slide drive mechanism for slidingly driving the reaping main frame in the horizontal direction.

[0005]

The above-mentioned mowing portion slide structure is provided by providing a slide support mechanism at a swing pivot portion of a mowing main frame provided at a high position.
It has the advantage that straw chips generated during the transport of the cutting grain culm and weeds near the root of the stock do not become entangled in the slide support mechanism, but the cutting main frame is connected to the hydraulic cylinder. Since the receiving and supporting member is slidably received laterally via a receiving support member whose center is supported at the tip, the larger the cutting main frame reaches the end of the receiving support member, the larger the end of the receiving support member becomes. The bending moment acts, and the end of the receiving support member bends, so that the horizontal sliding of the reaping main frame cannot be performed smoothly.Also, the connecting portion between the receiving support member and the hydraulic cylinder and the hydraulic cylinder There is a possibility that the operation force of the hydraulic cylinder may not be smoothly transmitted to the reaping main frame due to the occurrence of kinks in a connection portion with the machine body, and there is room for improvement. A screw shaft as a slide drive mechanism for slidingly driving the mowing main frame is supported in a cantilever manner with respect to a support member provided on one longitudinal end of a receiving support member on the hydraulic cylinder side. Therefore, the screw shaft is also likely to bend along with the bending of the receiving support member, and there is a possibility that smooth lateral feed cannot be expected, and there is also room for improvement here.

The present invention has been made in view of such a point, and suppresses the bending of the support member for receiving the load of the cutting main frame so that the cutting main frame can be smoothly slid laterally. The main purpose is to Another object of the present invention is to provide a structure in which the cutting main frame is configured to be driven to slide in a horizontal direction, so that bending of the slide driving mechanism is suppressed so that the cutting main frame can be smoothly fed in a lateral direction.

[0007]

[Means for Solving the Problems]

[Structure, operation and effect of the invention according to claim 1] According to the characteristic structure of the invention according to claim 1, the cutting main frame in the cutting pre-processing unit is mounted so that the position thereof cannot be changed in the lateral direction with respect to the machine body. The combine harvester slide structure, which is configured to be able to be driven up and down around a horizontal axis by a hydraulic cylinder, and that supports a vertically movable rocking boss portion of the cutting main frame so as to be able to slide laterally with respect to the body frame. A swing frame connected to a cylinder and driven to swing up and down is attached to the body, and the cutting main frame is received and supported by the swing frame so as to be able to move laterally, and the swing frame is connected to the cutting main frame. Is supported by the fuselage over both outer sides of the lateral movement range.

According to the above construction, the swing frame is supported by the body widely in the lateral direction, so that no matter where the cutting main frame slides laterally, the cutting main frame receiving point of the swing frame can be swung. It will be located within the support width of the frame to the fuselage.

Therefore, according to the first aspect of the present invention,
Even if the load of the pre-cutting unit is received anywhere in the horizontal sliding range, the swing frame is less likely to be twisted or bent, and the pre-cutting unit can be slid sideways lightly,
The operating force of the hydraulic cylinder is reliably transmitted to the reaping main frame, so that the ascending and descending can be performed smoothly.

[Structure, operation and effect of the invention according to claim 2] The characteristic structure of the invention according to claim 2 is the slide drive mechanism according to the invention according to claim 1 for slidingly driving the cutting main frame in the lateral direction. Is provided on the swing frame.

According to the above structure, the slide drive mechanism is provided on the high strength swing frame which is supported by the body in a wide width, so that the swing frame does not bend and the slide drive mechanism is deformed. In addition to the above effects of the invention according to the first aspect, the slide drive mechanism can be accurately operated to perform smooth lateral feed drive.

[Structure, operation and effect of the invention according to claim 3] According to the characteristic structure of the invention according to claim 3, the position of the cutting main frame in the cutting pre-processing unit cannot be changed in the lateral direction with respect to the machine body. A harvesting unit slide of a combine that is configured to be able to be driven up and down around a horizontal axis by an attached hydraulic cylinder, and that supports a vertically oscillating boss portion of the cutting main frame so as to be slidable in the horizontal direction with respect to the body frame. In the structure, in front of the arched swing frame
Positioned on both outer sides of the horizontal movement range of the mowing main frame
The cutting section is attached to the body, the tip of the hydraulic cylinder is connected to the arch-shaped swing frame, and the cutting main frame is slidably received and supported by the swing frame.

According to the above construction, the arch-shaped swinging frame is constructed such that the left and right frame portions outside the lateral movement range of the cutting main frame are swingably pivotally connected to the machine body. Even if the main frame moves near the lateral end of the swinging frame, the left and right frame portions of the swinging frame sufficiently resist the load of the cutting pre-processing unit, and the swinging frame is less bent and the cutting pre-processing unit Receive and support the mowing main frame.

Therefore, according to the third aspect of the present invention,
The swinging frame, which has high strength and is hard to deform, receives and supports the pre-cutting part, enabling smooth swinging up and down and horizontal sliding. Can be achieved.

[Structure, operation and effect of the invention according to claim 4] The characteristic structure of the invention according to claim 4 is that, in the invention according to claim 3, the frame part on the left and right sides of the arch type swing frame is provided. A slide drive mechanism for slidingly driving the mowing main frame in the lateral direction is provided.

According to the above configuration, the slide drive mechanism is held in a double-supported state over the left and right frame portions of the swing frame, so that the slide drive mechanism is supported as compared with the case where the slide drive mechanism is supported at one end. It becomes less likely to bend itself.

Therefore, according to the invention described in claim 4,
In addition to providing the above-described effect of the invention according to claim 3, the slide drive mechanism can be smoothly operated, and the cutting pre-processing unit can be reliably and laterally driven to slide.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below for a double-row combine. As shown in FIG.
This combine combines a cutting pre-processing unit 2 with a front part of a traveling machine equipped with a crawler traveling device 1 so as to be able to vertically move and swing around a horizontal axis X, and mounts a threshing device 3 on the traveling machine. The boarding operation unit 4 is arranged on the traveling body so as to be located on one side of the cutting pre-processing unit 2.

The pre-cutting processing unit 2 includes a pair of right and left raising devices 5 for raising the laid-down cereal culm in an upright posture, a clipper-type reaper 6 for cutting the root of the raised cereal culm,
A pair of left and right raking packers 7 for raking and transporting the reaping cereal toward the center in the width direction of the reaping, and the reaping culm in the upright position, while holding the stock side and locking the tip side, gradually. It is configured to include a vertical transport device 9 and the like that transports rearward while changing the posture to the side-down posture and transfers it to the threshing feed chain 8, and as shown in FIG. A hydraulic cylinder 10 is connected to and supported by the front portion of the body frame 11 so as to be swingably driven around the horizontal axis X.

As shown in FIG. 5, a horizontal transmission shaft 13 having a hexagonal cross section in the same axis as the horizontal axis X is provided, and the horizontal transmission shaft 13 is rotatable by left and right brackets 14. It is supported by the body frame 11. And
The cutting main frame 12 is mounted on the transverse transmission shaft 13.
The lifting and lowering boss 12a is externally fitted via a bush 15 so as to be relatively rotatable and relatively slidable along the axial direction of the lateral transmission shaft 13 to constitute a slide support mechanism A. Power is transmitted from the prime mover via an input pulley 16 attached to one shaft end of the lateral transmission shaft 13 so that torque can be transmitted to the transmission shaft 13 and slide integrally with the vertically oscillating boss 12a. The power is transmitted from a bevel gear 17 externally fitted to the pulling device 5, the reaping device 6, and the scraping packer 7 through a front-rearward transmission shaft 18, respectively. Bevel gear mechanism 20 in fitted bevel gear case 19
A power transmission system is configured to transmit power to the vertical conveyance device 9 via the.

As shown in FIG. 2, the raising device 5 and the reaping device 6 in the reaping pre-processing unit 2 are configured to be relatively movable in the lateral direction with respect to the machine body via the reaping main frame 12, and The device 9 has a vertical axis Y on the transport end side.
The starting end side is configured to move left and right around. As shown in FIG. 3, an arch type swing frame 23 is provided near the horizontal transmission shaft 13 so as to be swingable around a horizontal axis center and to receive and support the cutting main frame 12 from below so as to be able to move laterally. The arched swing frame 23 is provided with a horizontal slide drive mechanism 24 for driving the mowing main frame 12 to slide in the horizontal direction.

That is, a pair of left and right brackets 25, 25 is provided on the body frame 11 and a horizontal shaft 26 is erected, and the horizontal shaft 26 is mounted on the pipe-shaped boss portion 2 of the arch type swing frame 23.
3a is mounted so as to be rotatable relative to the outside, and the arch type swing frame 23 is mounted so as to be able to swing around the horizontal axis and fixed in the axial direction, and a pair of left and right frame portions 23b of the swing frame 23. , 23b, and a screw shaft 27 is erected.
The screw shaft 27 is connected to an electric motor 28 having a speed reduction mechanism attached to and fixed to the swing frame 23, and is connected to the screw shaft 27.
And the electric motor 28 constitute a horizontal slide drive mechanism 24. Then, the top members 29, 29 which are engaged with the screw shaft 27 from both upper and lower sides in a sandwiched state are fixed to the U-shaped bracket 30 which is open upward, and the electric motor 2
By turning the screw shaft 27 by 8, the U-shaped bracket 30 is configured to be slidable in the lateral direction.

The cutting main frame 12 is
The left and right sides are engaged with the U-shaped bracket 30 in a state of being embraced and received and supported by the front end portion of the swing frame 23, and the rotation of the screw shaft 27 causes the U-shaped bracket 30 to move sideways. By moving, the whole reaping main frame 12 slides sideways. Therefore, in a so-called round-cutting mode in which the reaper runs as an uncut side on the left side of the machine, as shown in FIG. In the so-called middle splitting operation mode in which the user slides sideways and cuts through the center of the uncut field, as shown in FIG. 2 (a), the cutting pre-processing unit 2 is moved to the right side of the machine so that it is located in front of the machine. Slide.

Also, since the mowing main frame 12 is displaceably engaged with the U-shaped bracket 30 upward, the mowing pre-processing section 2 comes into contact with the ground due to the unevenness of the ground, so that the mowing main frame 12 comes into contact with the ground from below. When the pushing force is applied, the mowing main frame 12 can be displaced upward with respect to the U-shaped bracket 30, so that mechanical damage due to the pushing can be avoided. -ing As shown in FIGS. 3 and 4, the lifting drive hydraulic cylinder 10 has its base end pivotally connected to the body frame 11 in a freely swingable manner around the horizontal axis and in a laterally fixed position. The other end is pivotally connected to the swing frame 23, and by swinging the swing frame 23, the entire pre-cutting unit 2 can be swung up and down.

Further, with the horizontal sliding of the mowing section as described above, the vertical transport device 9 can swing so that the starting end side can follow right and left with the axis Y of the output shaft 31 of the bevel gear mechanism 20 as a fulcrum. The front end side of the vertical transport device 9 is connected to a guide rod 33 that is spanned over the mowing main frame 12 and the transmission case 32 on the back of the raising device 5. The vertical transport device 9 has a start end connected to the guide rod 33 so as to be vertically slidable. The vertical transport device 9 is vertically moved with the axis X of the horizontal transmission shaft 13 as a fulcrum. When moved, the position of inheritance of the grain stalk from the raising device 5 is changed, and the handling depth of the grain stalk is adjusted.

As shown in FIGS. 3 and 5, the vertical conveying device 9 comprises a stock-holding / conveying device 34 comprising a chain 34a with a projection and a holding rod 34b, and locking claws mounted on the chain at predetermined intervals. The holding rod 34b and the guide rod 35b are a connecting member for connecting the stock holding / conveying apparatus 34 and the tip locking / conveying apparatus 35. Is attached to the lower end of an inverted U-shaped frame 37 connected to the lower end.
The holding rod 34b absorbs the displacement of the passage width due to the supply amount of the transported culm by a leaf spring 38, and the leaf spring 38 is connected to the inverted U-shaped frame 37.
It is detachably attached via a bolt 40 with a handle 40a so that it can be attached to a stay 39 extending from the handle 40 without tools.

Another Embodiment In the above embodiment, the slide drive mechanism A is constituted by the screw shaft 27 driven by the electric motor 28, but may be a hydraulic cylinder.

The swing arm 23 is constructed separately from the swing axis of the cutting main frame 12, but may be arranged concentrically.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a plan view showing a horizontal sliding state.

FIG. 3 is a cutaway side view of the slide support mechanism.

FIG. 4 is a front view of a slide support mechanism.

FIG. 5 is a vertical sectional front view of a slide support mechanism.

FIG. 6 is a partially cutaway front view of the screw feed mechanism.

FIG. 7 is a partially cutaway side view of the screw feed mechanism.

[Explanation of symbols]

 Reference Signs List 2 Pre-cutting unit 10 Hydraulic cylinder 11 Body frame 12 Cutting main frame 12a Elevating rocking boss 23 Arch-shaped rocking frame 23a Left and right frame portions 24 Slide drive mechanism X Horizontal axis core

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-153841 (JP, A) JP-A-61-164932 (JP, A) JP-A-59-172540 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) A01D 34/28 101 A01D 67/00

Claims (4)

(57) [Claims] 1. A mowing main frame in a mowing pre-processing unit is configured to be able to be driven up and down around a horizontal axis by a hydraulic cylinder mounted so as not to be able to change its position in a lateral direction with respect to the machine body. In a combine harvester sliding structure in which a vertically oscillating boss is slidably supported relative to the body frame, a swing frame that is connected to the hydraulic cylinder and is driven to swing up and down is attached to the body, A cutting part slide of a combiner which supports the cutting main frame so as to be able to move laterally and is supported by the swinging frame, and which supports the swinging frame on both sides of a lateral movement range of the cutting main frame. Construction. 2. The combine harvester sliding structure according to claim 1, wherein a slide drive mechanism for slidingly driving the cutting main frame in a lateral direction is provided on the swing frame. 3. A mowing main frame in the mowing pre-processing section is configured to be able to be driven up and down around a horizontal axis by a hydraulic cylinder mounted so as not to be able to change its position in the lateral direction with respect to the machine body. In a combine harvester sliding structure in which a lifting oscillating boss portion is slidably supported in a lateral direction with respect to a body frame, the cutting main frame in an arch-shaped swing frame is provided.
The parts located on both sides outside the lateral movement range of the
A cutting section sliding structure of a combine, wherein the tip of the hydraulic cylinder is connected to the arch-shaped swing frame, and the cutting main frame is received and supported by the swing frame so as to be able to slide laterally. 4. A combine harvester according to claim 3, further comprising a slide drive mechanism for slidingly driving the harvest main frame in a lateral direction across the left and right frame portions of the arched swing frame. Slide structure.