JPS6258927A - Reaping pretreatment apparatus of combine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to the structure of a pre-reaping treatment section device in a combine harvester.

[Conventional technology]

With a combine harvester that threshes rice, etc. planted in a field while reaping it, there is a so-called pitching phenomenon in which the running machine itself tilts back and forth due to undulations in the field in front and behind the running direction of the running machine, and the pitching phenomenon occurs when the running machine tilts back and forth. Due to the undulations of the surface and running on soft wet fields, a so-called rolling phenomenon occurs in which the traveling aircraft tilts from side to side.

Despite this phenomenon, the stem culm reaping part of the reaping pre-processing unit installed at the front of the traveling machine remains at an appropriate height relative to the field surface and remains constant in the left and right direction of the traveling machine. It is necessary to prevent variations in the cutting height of the culm and to prevent the cutting blade at the lower part of the cutting pretreatment section from sinking into the soil.

In order to solve this problem, the present applicant has previously proposed
In Japanese Patent No. 205909, it was proposed to locate the rolling rotation fulcrum of the reaping pre-processing section near the starting end of the feed chain. That is, the pipe-shaped transmission frame on which the reaping pre-processing section is mounted is made to protrude rearward from the front part of the traveling machine,
The base end of the pipe-shaped transmission frame is attached to the midway part of a straight horizontal pipe extending in the left-right direction of the traveling aircraft toward the center thereof, so as to be vertically movable, and the horizontal pipe and the pipe-shaped transmission frame are connected to each other. They are connected by a hydraulic cylinder, which allows the reaping pre-processing section to pitch freely, and the base end of the horizontal pipe protrudes forward in the direction of travel of the traveling machine approximately parallel to the feed chain, and an input shaft is inserted inside. It is rotatably attached to the front end of the input vibrator, and the horizontal pipe and the traveling machine are connected by a hydraulic cylinder, so that the reaping pre-processing section can be freely rolled in the left and right directions of the traveling machine. .

A transmission shaft protruding from the pitching rotatable pipe-shaped transmission frame toward the starting end of the feed chain is provided with a grain culm stock transfer device that transports and inherits the harvested grain culms toward the starting end of the feed chain. A drive unit for driving the terminal end is provided, and the terminal end faces toward the starting end of the feed chain.

[Problems to be Solved by the Invention] However, in the prior art, when the rolling horizontal pipe is rotated in a rolling manner, the terminal end of the grain culm stock source conveyor is also rotated, and therefore, the terminal end There was a problem in that the grain culm moved away from or approached the starting end of the feed chain, and the distance between the two changed, and the inheritance depth of the grain culm changed, resulting in excessive or insufficient handling depth in the threshing device. .

This problem also occurs in a type of machine in which a pitching arm is pivotally attached to the traveling machine so that it can pitch freely, a rolling arm is attached to the pitching arm so that it can roll freely, and a reaping pre-processing section is attached to the rolling arm. there were.

[Means for solving problems]

Therefore, the present invention provides a combine harvester in which a reaping pre-processing section disposed in front of a threshing device mounted on a traveling machine body is configured to be able to roll and pitch freely relative to the traveling machine body via a rolling arm and a pitching arm. , the terminal end of the grain culm stock source conveying device provided in the reaping pre-processing section,
The starting end of the feed chain is faced so as to inherit the grain culm, and the terminal end of the grain culm stock transfer device is moved in accordance with the rolling rotation of the rolling arm to connect the terminal end and the starting end of the feed chain. The configuration is such that they are related so that the intervals are approximately constant.

[Action and effect]

For example, if the rolling rotation fulcrum of the rolling arm and the feed chain that support the reaping pre-processing section so as to roll with respect to the traveling machine body are arranged on the right side in the direction of movement of the traveling machine body, the right side of the traveling machine body When the machine is tilted downward, if the left side of the pre-reaping treatment section is lowered and the rolling arm is rotated so that the pre-reaping section is approximately horizontal to the field, the feed chain on the traveling body side will be tilted to the right. In this case, the grain culm stock transport device in the pre-harvesting processing section is moved to the left, so that the two are relatively separated from each other.

Therefore, if the terminal end of the grain culm stock source conveying device is configured to move completely integrally with the reaping pretreatment section as in the prior art, the grain culm receiver between the terminal end and the starting end of the feed chain is This will widen the seam spacing.

However, in the present invention, the rolling arm that changes the horizontal tilt posture of the reaping pre-processing section and the terminal end of the grain culm stock origin conveying device provided in the reaping pre-processing section are interlocked and connected by an operating wire, or By interlocking and connecting an appropriate part of the pre-processing section and the terminal end with an operating wire, when the terminal end tries to move away from the starting end of the feed chain due to rolling rotation of the arm, the terminal end is moved away from the starting end of the feed chain. Since the parts are brought closer to each other and moved away from each other when they are about to approach in the opposite direction, the transfer interval between the end part and the feed chain start end can be kept approximately constant at all times,
This has the effect of making it possible to stably perform threshing work by keeping the processing depth of the threshing device constant.

〔Example〕

Next, an embodiment of the present invention will be described. Reference numeral 1 denotes a running body of a combine harvester having a pair of left and right running rollers 2.2. A threshing device 3 is mounted on the traveling body 1. Aircraft 1 whose axis runs along the handling trunk in the handling room
be arranged along the direction of travel. Reference numeral 4 denotes a feed chain installed along the threshing device 3;
is arranged along the left side in the traveling direction of the traveling machine 1, the front end of the feed chain 4 protrudes forward from the front plate 3a of the threshing device 3, and the front end serves as a stock source in the reaping pre-processing section 5, which will be described later. It is arranged so as to face the terminal end of the general feeding device 6.

The reaping pre-treatment section 5 is provided via a machine frame 7 that protrudes from the front part of the traveling machine body l, and a plurality of weeding bodies 8 and a reaping device 9 are installed at the lower end of a lower frame 7a of the machine frame 7. A plurality of grain culm lifting devices 10 are provided on the front surface, and a raking wheel 11, a head 1 general feeding device 12, and a grain culm stock origin conveying device 6, which will be described later, are also provided.

Reference numeral 14 denotes a support frame that supports the reaping pre-processing section 5 with respect to the traveling machine body 1 such that it can freely pitch and roll. It consists of an arm 15 and a T-shaped or L-shaped rolling arm 16 that supports the pitching arm 15 in a rolling manner.

This rolling arm 16 has the right and left longitudinal sides of the traveling body, and a rotation axis 17 at its base end is along the traveling direction of the traveling body 1.

The rotation shaft 17 is connected to the front plate 3 of the threshing device 3 of the traveling machine body 1.
a pair of front and rear supports that are disposed inside the machine body l at the starting end of the feed chain 4 and at a position closer to the bottom of the terminal end of the stock transfer device 6, and stand upright from the front frame 19 of the traveling machine body 1; 20.20 is rotatably supported by a rolling rotation bearing portion 21.21 at the upper end. Therefore, this rolling arm 16 moves up and down using the axis of the rotation shaft 17 as a rolling rotation fulcrum 17a,
Each of the rolling rotation bearing parts 21 has a flange part 212.
It can be divided into two parts.

On the other hand, the vicinity of the tip of the rolling arm 16 and the front frame 19 are forward-tilting prevention means that support the rolling arm 16 so that it cannot swing in a lateral direction substantially perpendicular to its longitudinal axis and can be raised and lowered. Connect at 22.

For example, as shown in FIG. 1, this forward-tilting prevention means 22 includes a pair of upper and lower links 45 that can be bent into a "<" shape when viewed from the front.
46, as shown in FIG.
8, and connect the lower end of the lower link 46 to the front frame 19.
The rolling arms 16 are each pivotally connected to pins 49 passing through the rolling arms 16.
Although it can move up and down about the rolling rotation fulcrum 172, it is configured so that the traveling body 1 does not bend or twist in the front-rear direction due to the weight of the pre-reaping processing section 5.

Reference numeral 26 denotes a rolling drive means for vertically moving the rolling arm 16 along the left-right direction of the traveling body 1, and in the illustrated embodiment, it is composed of a hydraulic cylinder mounted between the front frame 19 and the arm 18. Reference numeral 27 is the pitching arm 15
It is a pitching drive means for vertically moving the traveling body 1 in the longitudinal direction thereof, and is constituted by a hydraulic cylinder mounted between a rolling arm 16 and a pipe-shaped pitching arm 15.

The hydraulic cylinders serving as the driving means 26 and 27 are all of the so-called single-acting type, and hydraulic pressure is supplied to and from the hydraulic pump 29 mounted on the traveling machine body 1 through switching valves 30 and 31, respectively (see FIG. 8).

At this time, each of the switching valves 30 and 31 can be switched manually, or by sensing the distance from the field by a sensor (not shown) attached to the lower part of the pre-reaping processing section 5, or by switching the switching valves 30 and 31 by switching the switching valves 30 and 31 manually, or by sensing the distance from the field scene by a sensor (not shown) attached to the lower part of the pre-reaping processing section 5, or by switching the switching valves 30 and 31 by switching the switching valves 30 and 31 manually, or by sensing the distance from the field scene by a sensor (not shown) attached to the lower part of the pre-reaping processing section 5, or by switching the switching valves 30 and 31 by switching the switching valves 30 and 31 manually, or by sensing the distance from the field surface using a sensor (not shown) attached to the lower part of the pre-reaping processing section 5. It may be controlled so that it senses the forward leaning posture or the left/right leaning posture and self-corrects.

Furthermore, the rolling drive means 26 and the pitching drive means 27 may be appropriately known drive means such as a combination of an electric motor and a screw rod.

The rolling arm 16 is provided with a pair of left and right pitching rotation bearings 23.23 that protrude upward and toward the front of the traveling body, and the transmission case 24 to which the base of the pipe-shaped pitching arm 15 is attached is rotated. Support freely.

Thereby, the pitching arm 15 with the reaping pre-processing section 5 attached to its front end can move up and down about the pitching rotation axis 23a, which is the axis of the pitching rotation bearing section 23.23.

The power transmission mechanism 25 from the power unit of the traveling machine body 1 to the reaping pre-processing unit 5 is as shown in FIG. A bendable and telescopic joint 36 is connected between the support shaft 34 (with built-in torque limiter) of the pulley 32 provided near the rolling rotation bearing 21 and the transmission shaft 35 attached to the rolling arm 16. and connect. At this time, the joint 36 and the transmission shaft portion 35 are arranged so as to overlap with each other in the upper part of the distal end portion of the arm 18 in a plan view, so that the length of the joint 36 can be maintained even when the rolling arm 16 is rolling. Transmission can be done without changing too much. The winding of the belt 38 is transmitted to the transmission shaft portion 35 and the input shaft 37 to the transmission case 24 to which the base of the pitching arm 15 is attached,
Power is transmitted from this input shaft 37 to one grain culm pulling device 10 via a bevel gear 39 and the like. Also, the aforementioned story! It is transmitted to the raking wheel 11, the reaping device 9, and the other grain culm pulling device 1o via the other bevel gear 4o of the Ij case 24, the shaft 41 in the pitching arm 15, etc., and is transmitted via the gear 42, hevel gear 43, etc. It drives the ear tip conveying device 12 and the grain culm stock source conveying device 6.

As shown in FIG. 3 and FIG.
Drive sprocket 53, starting end tension roller 54
．． It is wound around three parts of the terminal end tension roller 55 and arranged so that the outer peripheral part of the terminal end tension roller 55 faces the starting end of the feed chain 4.

The starting end tension roller 54. A clamping rod 56 is disposed along the transporting direction on the surface of the conveyance cheno 52 between the terminal end tension rollers 55, and the clamping rod 56 is
A support body 58 attached to the main body 51 via a substantially U-shaped connecting rod 57 is biased toward the surface of the conveying ceno 52 by the force of a spring 59.

The starting end tension roller 54. A guide member 6 in which each base end portion 54a, 55a of the terminal end tension roller 55 is provided in a straight line so as to face the back surface of the main body case 51.
0.61 so as to be movable back and forth, and the main body case 51 and each base end portion 54a.

The tension rollers 54 and 55 are urged by tension springs 62 and 63 mounted on the tension rollers 55a so as to project outward from each other (in a direction away from each other).

Reference numerals 64 and 65 designate grain culm wrapping prevention plates attached to both the upper and lower surfaces of the terminal end tension roller 55.

The base end portion 55 of the terminal end tension roller 55
Connect the operating wire 66 with one end connected to the main body case 61
The outer tube 67 is inserted into the outer tube 67 fixed at one end to the outer tube 67, and the other end of the inner tube 67 is inserted into the front frame 19 etc.
The other end of the operating wire 66 is connected to the rolling arm 16 from below, and as the rolling arm rotates up and down, the terminal end tension roller 55 moves against the starting end of the feed chain 4. are interlocked and connected so that they can move by an appropriate dimension (Hl) left and right. That is, when the rolling arm 16 rotates upward, the operating wire 6
6, the terminal end tension roller 55 is pulled away from the starting end of the feed chain 4, and if the rolling arm 16 rotates downward,
By loosening the operating wire 66, the terminal end tension roller 55 is moved closer to the starting end of the feed chain 4,
Therefore, the horizontal interval between the terminal end of the grain culm stock head 1 general feeding device 6 and the starting end of the feed chain 4 in the reaping pretreatment section 5 which tilts in the opposite direction relative to the horizontal tilt of the traveling machine body 1 is The relationship is maintained so that it remains approximately constant.

Incidentally, reference numeral 68 indicates the support 5 on which the clamping rod 56 is attached.
8 is a pinching guide that elastically biases the top surface of the starting end of the feed chain via a spring 69.

In this configuration, when the front part of the traveling machine body 1 traveling in the field area 50 leans forward, the front end of the front end of the reaping pre-processing part 5 can touch the field area 50. The switching valve 30 is switched through a sensor that detects the width of the gap between the lower end and the field area 50, and hydraulic pressure is sent to the hydraulic cylinder that is the pitching drive means 27 to raise the pitching arm 15 so that the tip side thereof is lifted up and harvested. The height of the reaping device 9 of the pre-processing section 5 relative to the field scene 50 is controlled to a predetermined height.

When the front part of the traveling machine body 1 is tilted so as to be lifted, pitching control is performed such that the reaping pre-processing section 5 is lowered via the pitching drive means 27 in the opposite manner to the above.

Furthermore, one of the running rollers of the traveling body 1 is in the field scene 50.
When the field falls into a recess such as a groove and tilts to the left or right, for example, when the left side of the traveling direction is tilted downward, the field surface 50 is approximately horizontal with the lower surface of the right-hand side pre-reaping section 5, which is the opposite side.
Rolling arm 16 so that the vertical distance between the
(see the two-dot chain line in Fig. 1), the piston rod of the hydraulic cylinder, which is the rolling drive means 26, is moved backward. Conversely, when the right side of the traveling machine l is lowered, hydraulic pressure is sent to the hydraulic cylinder. Then, the tip side of the rolling arm 16 is lifted (see the dashed line in FIG. 1), and so-called rolling control is performed so that the left and right lower surfaces of the pre-reaping treatment section 5 are at the same height with respect to the field surface 50. .

During such rolling control, the rolling rotation fulcrum 17a of the rolling arm 16 is located near the starting end of the feed chain 4 in the threshing device, and the grain culm stock of the reaping pretreatment section 5 is located on the side of the starting end of the feed chain 4. Since the outer periphery of the tension roller 55 at the terminal end of the original conveying device 6 is exposed, if the terminal end of the grain culm stock original conveying device 6 does not move left and right, it will roll as shown by the two-dot chain line in FIG. When the tip side of the arm 16 is lowered,
The distance between the tension roller 55 at the terminal end of the grain culm stock conveying device 6 and the side of the starting end of the feed chain 4, which moves in accordance with the left-right inclination of the pre-harvesting section 5, is increased, but as in this embodiment, the rolling arm Said terminal tension roller 55 is attached via an operating wire 66 connected to spring 6
As shown in the dashed line in Fig. 3, the feed chain 4 is
It can be brought close to the side.

Similarly, when the distal end side of the rolling arm 16 is raised as shown by the dashed line in FIG. [Pulled through the Kuwasaku wire 66,
Since it can be separated from the feed chain 4, the starting end of the feed chain 4 at the transfer point and the grain base +
11 There is no change in the distance from the end of the feeding device 6, and therefore,
Excess and deficiencies in handling depth due to variations in grain culm inheritance depth are eliminated.

In the embodiment described above, the operating wire 66 for moving the terminal end tension roller 55 of the grain culm stock transfer device 6 was connected to the rolling arm 16.
It goes without saying that the operating wire 66 may be connected to an appropriate location of the reaping pre-processing section 5 which rotates in a rolling manner in the same manner as in the above, and instead of the terminal end tension roller 55, a conveying ceno having a similar function may be used. It is also possible to interlock and connect the tension guide members so that they are movable.

It goes without saying that the present invention can also be applied to a type in which a pitching arm is attached to a traveling machine body, a rolling arm is attached to the pitching arm so as to be able to roll freely, and a reaping pre-processing section is attached to this rolling arm. do not have. In addition, if the rolling rotation fulcrum is located far away from the feed chain, the distance between the terminal end of the grain culm stock IM feeding device 6 and the starting end of the feed chain becomes large.
The effects of the present invention will be even more pronounced.

Furthermore, although not directly related to the present invention, as shown in FIG.
A U-shaped Zide divider 70 which is elongated in plan view in the front-rear direction of the traveling machine body 1 and is biased to protrude by a compression spring 71 is provided on the grain culm (uncut side), and the side divider 70 and the rolling arm 1
When the rolling arm 16 rotates downward (when the uncut side of the grain culm of the traveling body 1 is tilted downward), the above-mentioned The side divider 70 can be associated so as to protrude outward from the side surface of the traveling body. Thereby, it is possible to prevent the grain stalks planted in the field on the uncut side of the grain stalks from coming into contact with the side surface of the traveling machine body or the rollers 2 running under it.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, and FIG.
2 is a side view of the front part of the combine, FIG. 3 is a plan view of the main part shown along line 1-111 in FIG. 2, and FIG. 4 is the rV- in FIG. 2. Figure 5 is the rV line surface view.
Figure 6 is a cross-sectional view taken along line V-V in Figure 3, Figure 6 is a schematic diagram showing power transmission to the pre-reaping processing section, and Figure 8 is a schematic diagram showing rolling and pitching. It is a diagram showing a hydraulic circuit. 1... Several running bodies, 2... Rollers running, 3...
... Threshing device, 4... Feed chain, 5...
Reaping pre-processing section, 6... Grain culm stock source conveyance device, 12...
...Ear tip conveyance device, 7.. Machine frame, 8.. Grass cutting body, 9.. Reaping device, 10.. Grain culm lifting device, 1
4... Support frame, 15... Pitching arm, 16...
...rolling arm, 17...rotation axis, 17a...
... Rolling rotation fulcrum, 19... Front frame,
20.20... Strut, 21.21... Rolling rotation bearing part, 23... Pitching rotation bearing part, 2
3a...Pitching rotation axis, 24...Transmission case, 25...Power transmission mechanism, 26...Rolling drive means, 27...Pitching drive means, 51
...Body case, 52...Transportation ceno, 53.
... Drive sprocket, 54... Start end tension pulley, 54... End end tension pulley, 5
6...Pinch rod, 58...Support, 60.61.
... Guide member, 62.63 ... Spring, 64.6
5... Grain culm wrapping prevention plate, 66... Operation wire, 67... Outer tube. Patent applicant Yanmar Agricultural Machinery Co., Ltd. Agent Patent attorney Ishii-Kai 1, l) J: U'
−・′ ・２；゛5′

Claims (1)

[Claims] (1) In a combine harvester in which a pre-reaping treatment section disposed in front of a threshing device mounted on a traveling machine body is configured to be capable of rolling and pitching with respect to the traveling machine body via a rolling arm and a pitching arm, the pre-reaping treatment The terminal end of the grain culm stock transfer device provided in the section is made to face the starting end of the feed chain so as to inherit the grain culm, and the terminal end of the grain culm stock transfer device is moved according to the rolling rotation of the rolling arm. 1. A reaping pre-processing unit device for a combine harvester, characterized in that the terminal end portion and the feed chain starting end portion are related to each other so that the distance therebetween is substantially constant.