JPS5838124B2 - Stem culm pulling device for harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides claws that engage a planted stem culm at a position near the ground.
There is a main pulling device in a backward tilted position that changes the planted stem culm to an upright position by forcibly moving it backwards and upwards in the direction of movement of the aircraft from this position, and a The device is equipped with an auxiliary pulling device in a forward-slanted posture configured to perform an auxiliary lifting action on the stem culm by forcibly moving the claw engaged with the planted stem culm forward and upward in the direction of movement from that position. The present invention relates to a stem culm pulling device for a harvester.

According to this type of stem culm pulling device for a reaper, when lifting a planted stem culm that is lying down forward in the direction of movement of the machine; By lifting only with the device, the direction of the device's lifting action matches or almost matches the direction for changing the forward-lodging stem culm to an upright position, thereby preventing mistakes in lifting, pulling out of planted stem culms, and planting. This forward-lodging stem culm can be raised reliably, smoothly, and safely without causing troubles such as cutting of the stem culm, and on the other hand, it is possible to raise the stem culm that is lying down towards the rear in the direction of movement of the aircraft. Sometimes, an auxiliary pulling device is placed in the active position and the auxiliary lifting device is raised before being raised by the main pulling device, thereby changing the direction of the pulling action by the device from a backwardly lodging culm to an upright position. By aligning or tenon-coordinating the direction of the culm, the backward lodging stem culm can be reliably, smoothly, and safely raised in the same manner as described above.

In other words, when working in a reciprocating mode, the planted stem culm can be pulled up reliably, smoothly, and safely when the machine moves in any direction, and when using a conventional device that does not have an auxiliary lifting device. This makes it easier to improve work efficiency significantly compared to other methods.

However, for example, every time the machine's traveling direction is changed at the reciprocating end, the operator would have to get off the machine and switch the position of the auxiliary hoisting device. The effect of improving work efficiency is poor.

In view of this point, the present invention aims to maximize the effect of improving work efficiency by providing an auxiliary lifting device.

The stem culm lifting device for a reaper according to the present invention is as described at the beginning, and the auxiliary lifting device is moved between an active position and a non-active position according to a change in the lodging direction of the planted stem culm with respect to the moving direction of the machine body. It is characterized by being provided with a mechanism for automatically switching between the two positions.

Therefore, according to the present invention, by automatically switching the position of the auxiliary lifting device based on the change in the lodging direction of the planted stem culm, the optimum lifting action is automatically realized for the lodging state of the planted stem culm. As a result, reciprocating mowing can be adopted as a working method in fields with fallen stems, and there is no need to waste time and labor to change the position of the auxiliary hoisting device manually, resulting in a significant improvement in work efficiency. As a result, it has become possible to realize improvements in the quality of the product and ease of handling.

Hereinafter, embodiments of the present invention will be described based on a grain culm lifting device in a combine harvester shown in the drawings.

3 is a main pulling device, whose front lower end is supported by the support rod 7 of the weeding device 6, and its rear upper end is supported by the cylindrical frame 10 connected to the frame 9 of the reaping device 8. The pair of left and right pulling frames 11, 11 in the supported rearward tilted position [this] moves the endless chains 2, 2 from their front lower position to the upper rear moving path portions 2A, 2, A and from the rear upper side. The downward movement path portions 2B and 2'J3 to the lower front position are located within the same rear inclined plane in side view, and
The upper moving path portions 2A, 2A are mounted on racks so as to be located opposite each other, and the upper moving path portions 2A, 2A are placed at positions spaced apart from each other appropriately in the direction of rotation of the chains 2, 2.
and the downward movement path portion 2Bl When moving in the detour movement path portions 2c, 2c from 2B to the upward movement path portions 2A, 2A, the downward movement path protrudes in a direction perpendicular to the path portions 2A, 2C, etc. When moving in parts 2B, 2B, the lifting claw 1 swings back into the lifting frame 11, 11,
1... is installed and set up.

In other words, this main pulling device 3 engages with the planted grain culm from the lateral and lateral sides through the wrap-around movement p of the claws 1, 1, etc. at a position near the ground, and from this position upwardly and backwardly in the direction of movement of the aircraft. It is arranged to change the planted grain culm into an upright form by moving the claws 1, 1, . . .

Incidentally, this main lifting device 3 is connected to the cylindrical frames 10, 1.
0 is a transmission case, and among the sprocket wheels 12, 12, . It is arranged to be driven by being interlocked with the tool.

Reference numeral 4 denotes an auxiliary pulling device in a forward tilted position provided at the front of the main lifting device 3. Discs 1 that are interlocked and connected to rotate in the plane of
3.13 A plurality of claws 5, 5, each of which is swingable around an axis perpendicular to the forward tilted attitude plane, and is biased by centrifugal force into an attitude protruding outward in the rotational radial direction. are mounted at appropriate intervals in the circumferential direction, and the disc 13.
dogleg-shaped cylindrical case 14,1 for the transmission system to 13;
The claws 5, 5 are attached to the fixing plates 15, 15 attached to the tips of 4.
When moving along the lower part of the circumferential path, the claws 5, 5, etc. are restricted to protrude outward in the radial direction by acting on the base end of the upper part of the circumferential path. {When moving along this line, cams 16, 16 regulate the claws 5, 5, etc. in a posture along the rotational tangent direction with their tips delayed.
It has been structured in the form of

In other words, this auxiliary pulling device 4 engages the tip side of the planted grain culm by moving the claws 5, 5, etc. from the lateral and lateral sides at a position near the ground, and from this position forward and upward in the direction of movement of the aircraft. The structure is such that the lifting action is performed by the movement of the claws 5, 5, .

Therefore, in this embodiment, the cylindrical case 14, 1
4 is configured to be able to swing freely relative to the lifting frame 11 around the axes of the lower sprocket wheels 12, 12 in the main lifting device 3, so that the auxiliary lifting device 4 can be moved between the lifting action position and the upper position. {The structure is configured so that the position can be changed freely between the rotated non-operating position, and the drive mechanisms 17, 17 for swinging the cylindrical cases 14, 14 are installed inside the lifting frames 11, 11, and The lodging direction of the grain culm with respect to the machine body traveling direction is detected, and based on this detection result, the drive mechanism 1
A lodging direction detection control device C is provided to control the lodging direction detection control device C for controlling the culms 7 and 17, so that when the planted grain culm is in the forward lodging posture, the auxiliary lifting device 4 is automatically switched to the non-operating position, so that the planted grain culm is in the backward lodging position. When in the lying position, the auxiliary lifting device 4 is configured to be automatically switched to the active position.

The drive mechanism 17 includes a gear 17a provided on the outer periphery of the inner end of the cylindrical case 14, and a rack gear 17 that engages with the gear 17a and is movable only in the longitudinal direction of the lifting frame 11.
b, and a hydraulic cylinder 17c for moving the rack gear 17b based on a command from the detection control device C.

The detection control tool C is a rotating chain 2 of the main pulling device 3.
The direction of lodging of the planted grain culm is determined based on the workload detected through the method.

In other words, when starting work on a forward-lodging grain culm, claws 1... act first on the base of the grain culm, so the workload is heavy; on the other hand, when starting work on a rear-lodging grain culm, claws 5... Since the work load is small, the direction of lodging of the planted grain culm can be detected by detecting this work load.

In addition, from the lower sprocket wheels 12, 12 to the disc 13
, 13 includes sprocket wheels 12, 12.
Bevel gears 20, 20
The structure is such that the transmission state is maintained regardless of changes in the rotational posture of the cylindrical cases 14, 14.

According to the above structure, as shown in FIG. 1A, when the planted grain culm is lying down toward the front in the direction of movement of the aircraft, the auxiliary lifting device 4 is automatically switched to the non-operating position. In this case, the work is carried out in a state in which the grain culm is placed near the stock base of the forward-lodging grain culm at the starting end of the pulling process, in a position that is close to perpendicular to the stock base when viewed from the lateral side. The claws 1, 1 of the main lifting device 3 move rearward and upward in substantially the same direction as the direction for lifting the front-lodging grain culm into an upright position.
- When the stem culm is pulled up, and on the other hand, the planted grain culm is lying down to the rear in the direction of movement of the aircraft, as shown in the opening of Figure 1, the auxiliary lifting device 4 automatically switches to the operating position. In this case, the auxiliary hoisting device performs the same action on the rear lodging grain culm as the pawls 1, 1, etc. of the main hoisting device 3 on the front lodging grain culm. The grain culm is first pulled up by the claws 5, 5, etc. of the lifting device 4, and then transferred to the main lifting device 3.

The lodging direction of the planted stem culm in the field is almost the same, and the change in the lodging direction of the planted stem culm with respect to the direction of the moving force of the machine, and the change in the direction of the machine moving at the edge of the field during reciprocating work. Since there is a correspondence relationship with the change, in carrying out the present invention, the position of the auxiliary pulling device 4 may be changed in accordance with the change in the lodging direction of the planted stem culm based on the change in the direction of movement of the machine body. .

In this case, when the aircraft is located at the edge of the field, a change in the direction of movement of the aircraft can be easily detected by, for example, reducing the number of planted stem culms or by stretching a rope at the edge of the field.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the stem culm pulling device for a reaper according to the present invention. Figure 3 is an enlarged longitudinal sectional side view of the main part. 1...Claw, 3...Main pulling device, 5.
...Claw, 4...Auxiliary lifting device.

Claims (1)

[Claims] 1 By forcibly moving the claw 1, which has engaged with the planted stem culm at a position near the ground, from this position backward and upward in the direction of movement of the aircraft, the planted stem culm is changed to a standing position (a backward tilted posture). The main pulling device 3 and the claw 5, which is located at the front of the device and engaged with the planted stem culm at a position near the ground, are forcibly moved forward and upward in the direction of movement from that position to the stem culm. A stem culm pulling device for a reaper, comprising an auxiliary lifting device 4 in a forward tilted posture configured to perform an auxiliary lifting action, the auxiliary lifting device 4 being used to move the culm of the planted stem. A stem culm lifting device for a reaping machine, characterized in that it is provided with a mechanism that automatically switches between an active position and a non-active position in response to a change in the direction of lodging.