JPH078089A - Grass-dividing device of combine - Google Patents

Abstract

PURPOSE:To provide the grass-dividing device of a combine equipped with a grass- dividing posture-switching device for switching the posture of a grass-dividing lever by an operator positioned in an operation seat as such, the grass-dividing posture- switching device having a structure for mechanically linking the grassdividing lever to a moving operation lever being made up in a simple and lightly operable structure. CONSTITUTION:The grass-dividing device of a combine is characterized in that a grass-dividing posture-switching device 10 capable of freely switching the posture of a grass-dividing lever 9 into a grass-dividing action posture projected from the lateral side of a frame or into a docking posture drawn to the side of the travel frame comprises an artificial operation tool 15 disposed at a place near to an operation seat 5 and an interlocking mechanism 16 for mechanically linking the artificial operation tool 15 to the grass-dividing lever 9, that an unidirectional restraint means 21 restraining the change in the posture of the grass-dividing lever 9 into the grass- dividing action posture side and allowing the change in the posture of the grass-dividing lever into the docking posture side is disposed in the interlocking mechanism 16, and that the restraint action of the unidirectional restraint means 21 on the interlocking mechanism 16 can be released by the operation of the artificial operation tool 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a combine weeding device used for agricultural work.

[0002]

2. Description of the Related Art In a general weeding device used in this type of combine, a weeding posture switching device for changing the posture of the weeding rod is arranged near the mounting position of the weeding rod. Therefore, every time it is necessary to change the attitude of the weeding rod, the operator must descend from the control section provided on the cut side of the machine and go around to the uncut side of the machine to change the attitude. There was a hassle. In order to eliminate such inconvenience, conventionally, a weeding posture switching device for changing the posture of the weeding rod is mechanically interlocked with a swinging operation lever for manual operation and a weeding rod. By arranging the swing operation lever within the reach of the driver's seat, it is possible to change the position of the weeding rod while being in the driver's seat (for example, Japanese Utility Model Laid-Open No. 64-24930).

[0003]

The conventional structure in which the weeding rod and the rocking operation lever are mechanically linked like the above-mentioned conventional structure has a large amount of foreign matter such as weeds and straw debris and mud attached. Compared to the case where the posture changing device of the weeding rod is easy to use, the number of parts is small, and no special driving means is required, and the structure is simple compared with the case where the driving means such as a transmission motor or a hydraulic mechanism is used. Is advantageous in that In the conventional combine with the above structure, when mechanically linking the sward rod and the swing operation lever, the shunt rod is damaged or deformed due to a collision with a ridge during work or a collision with a partition wall or the like. In order to avoid such inconvenience, a friction holding structure using a friction plate and an urging spring is adopted in the swingable support structure portion of the weed rod. For this reason, in this type of conventional weeding device, the posture switching operation of the weeding rod is heavy, and it is difficult to expect a light operation. It is an object of the present invention to provide a combine weeding device equipped with a weeding posture switching device for switching the posture of the weeding rod while being located in the control section, in which a mechanical operation of the swing operation lever and the weeding rod is performed. Another object of the present invention is to provide a weeding posture switching device having a simple linkage structure with a simple structure and a structure that is light and easy to operate.

[0004]

Means for Solving the Problems The technical means of the present invention taken to achieve the above-mentioned object is to provide a weeding posture and a traveling machine body which are laterally outwardly projecting on the uncut side of the traveling machine body. A combiner having a weeding rod that can be switched between a retracted posture and a retracted posture that is equipped with a weeding posture switching device that switches the posture of the weeding rod to each of the postures. In the weeding device, the weeding posture switching device, an artificial operation tool provided in a position near the control unit,
It is composed of a linking mechanism that mechanically links the artificial operating tool and the weeding rod, and in the linking mechanism, while restraining the posture change of the weeding rod toward the weeding action posture side, A one-way restraint means that allows a posture change to the storage posture side is provided, and the one-way restraint means is configured to be able to release the drafting production for the linkage mechanism by operating the human operation tool.

[0005]

The operation of the above technical means is as follows. a. When mechanically linking the weeding rod and the rocking operation lever, the posture change of the weeding rod to the weeding action posture side is restrained and the posture change to the storage posture side is performed in the linkage mechanism. Since the one-way restraint means for allowing the sward is allowed, it is possible to change the posture of the swarding rod to the storage posture side by contacting another object such as a ridge, but it is possible to rub the weeding posture of the shunting rod. No need to hold by. b. The one-way restraining means interposed in the linkage mechanism is designed to be released by manipulating the manipulator for changing the posture of the weeding rod. The releasing operation for drafting by the means can be easily released by using the artificial operating tool.

[0006]

The effects of the present invention by taking the above technical means are as follows. While holding the squid rod mechanically in a state that allows it to contact the ridges and other objects to change its posture to the retracted posture side, the posture of the shunt rod is forcibly resisted against its holding force. Instead of performing the switching operation, by canceling the restraint of the one-way restraint means that held the posture of the weeding rod,
Since the holding power itself is lost, the posture of the weeding rod can be easily switched by manipulating the manipulator.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a combine weeding device of the present invention, in which a threshing selection device 4, a control unit 5, etc. are installed on a machine frame 2 on a pair of left and right crawler type traveling devices 1. A well-known self-draining double-row cutting combine, in which a pretreatment device 3 including a raising device 6, a mowing device 7, a vertical conveying device 8 and the like is provided at its front position so as to be vertically adjustable, It is equipped with a grass device.

[0008] The weeding device, on the uncut side of the body,
A weeding rod 9 provided near the front end of the raising device 6 in the pretreatment device 3 to the rear end of the traveling device 1.
And a weeding posture switching device 10 for switching the posture of the weeding rod 9 to a weeding action posture that is extended laterally outward of the machine body and a storage posture that is pulled toward the machine body side. . As shown in FIG. 1, a front end portion of the weeding rod 9 is bent into a hook shape, and is pivotally supported by a weeding tool supporting rod 11 near the front end of the raising device 6 so as to be rotatable around a front-rear axis P1. In addition, the rear end of the traveling device 1 is pivotally supported near the rear end of the traveling device 1 with respect to the machine frame 2 around another front-rear axis P2, and the intermediate part of the rear end is adjustable for expansion and contraction. Connected to the rocking member 12. This rocking member 12
Is pivotably attached to a mounting bracket 14 provided near the lower end of the input transmission case 13 for the raising device 6.

As shown in FIG. 2, the weeding posture switching device 10 is a swinging operation as an artificial operation tool provided within a reach of a pilot sitting on a pilot seat 5a provided on the pilot section 5. It is composed of a lever 15 and a linkage mechanism 16 for linking the swing operation lever 15 and the weed rod 9 with each other. The rocking operation lever 15 is rockable on a pivot shaft 19 projecting from a support 18 in a lever casing 17 connected to the upper end of the input transmission case 13 on the back side of the raising device 6. Pivoted and its pivot 1
The operation position of the rocking operation lever 15 is elastically moved by a spring 20 which presses and biases the fan-shaped sliding plate portion 15A of the base of the rocking operation lever 15 with the projecting end side of 9 as a reaction force point. It is configured to hold friction.

In the lever casing 17, the linkage mechanism 16 includes a sliding plate portion 15A of the rocking operation lever 15 and a support base 18 fixed to the lever casing 17 so as to face the sliding plate portion 15A. A one-way restraint means 21 provided between the push-pull wire 22, one end of which is connected to the swing operation lever 15, and the swing member 12 which is connected to the other end of the push-pull wire 22. It consists of The one-way restraint means 21 includes a recess 23 for holding a sphere formed in the support base 18, a plurality of engaging holes 24 formed in the sliding plate portion 15A, and a sphere positioned between them. And 25. Then, as shown in FIG. 3C, the sphere 25 is located at the deepest portion 23a of the recess 23 in the operation direction of the swing operation lever 15 toward the side where the weed rod 9 is stored.
On the contrary, in the direction in which the grass rod is operated toward the weeding posture, the inclined surface portion 23 of the concave portion 23 of the spherical body 25 is gradually shallowed.
The shape is set in b. Therefore, the recess 2
3 is located at the deepest portion 23a of the concave portion 23 when the swing operation lever 15 is operated to store the weed rod 9, and in this state, the sliding plate portion is located. Even if the sphere 25 is engaged with the engagement hole 24 of 15A,
The engagement margin is small, and the movement of the sphere 25 is stopped by the contact with the end of the recess 23, and the sliding plate portion 15
Only A moves to the storage side. Also, the swing operation lever 1
When operating the weed rod 9 of No. 5 to the weed action posture side, the spherical body 25 engaged with the engaging hole 24 of the sliding plate portion 15A,
The deepest portion 23a of the concave portion 23 is moved to the inclined surface portion 23b side, and the spherical body 25 is strongly bitten between the inclined surface portion 23b of the concave portion 23 and the bottom surface of the engaging hole 24, and the frictional resistance against the movement of the sliding plate portion 15A is strong. Is given, and it becomes a restraining state against the movement. Then, when the sliding plate portion 15A is artificially operated, that is, when the weed rod 9 is moved to a predetermined weed action position, the swing operation lever 15 is acted against the urging action of the spring 20. The sliding plate portion 15A can be moved to the weeding side of the weed rod 9 in a state in which the spherical body 25 is not caught, by operating it to a side away from the support base 18.

The push-pull wire 22 is for transmitting the push-pull operation of the rocking operation lever 15 in both directions to the side of the weed rod 9 and, of course, the acting force from the side of the weed rod 9,
In other words, when an external force that damages or deforms the weed rod 9 by contacting another object, the external force is transmitted to the sliding plate portion 15A side to release the restraint state, and It acts to allow the transfer of the grass rod 9 to the storage side.

[Other Embodiment] (1) FIG. 4 shows another embodiment of the one-way restraint means 21,
An inclined projecting piece 26 stamped and formed from the back side is provided on the surface of the support base 18, and a through hole 27 that engages with a steeply inclined edge of the inclined projecting piece 26 is provided on the sliding plate portion 15A side. .
Other configurations are the same as those in the above-mentioned embodiment. (2) FIGS. 5 and 6 show another embodiment of the weeding posture switching device 10, which is provided on the left side of the device 6 above the input transmission case 13 by raising the support base 18 and the sliding plate portion 15A. The sliding plate portion 15A and the swinging member 12 are linked by a rod 29. The swing operation lever 15 is composed of a separate member for the sliding plate portion 15A and the operating rod portion 15B, and the operating rod portion 15B is radially arranged with respect to the tubular portion 30 formed on the sliding plate portion 15A. It is loosely fitted relative to. As a result, the operating rod portion 15B can be made to hang down as shown by an imaginary line so that even if the long operating rod portion 15B is used, it does not protrude from the upper end of the raising device 6. (3) In constructing the weeding posture switching device 10, the swing operation lever 15 may be provided with respect to the input transmission case 13 for the raising device 6 such that the operation direction thereof is the front-back direction. . In that case, the push-pull wire 22 that links the rocking operation lever 15 and the rocking member 12 is arranged along the rear surface of the raising device 6 depending on how the input transmission case is provided for the raising device 6.
It may be arranged in any direction, such as along the cutting frame side. (4) In the linkage mechanism 16, the member for transmitting the operation of the manual operation tool to the swinging member 12 is not limited to the push-pull wire 22 and the rod 29 described in the above-described embodiment, but may be the link mechanism or the weeding rod 9 Appropriate means such as a Bowden cable arranged so as to be operated by pulling action on both the weeding side and the storing side can be adopted. (5) The artificial operation tool of the weeding attitude switching device 10 is not limited to the swing operation lever 15 described above, but may be of a structure in which the attitude of the weeding rod 9 is switched by a push / pull operation. In this case, to maintain the position of the weeding rod 9,
The same one-way restraint means as when the swing operation lever 15 is adopted may be adopted. (6) The combine is not limited to double-row cutting, but may be multiple-row cutting with three or more rows. (7) The weeding rod 9 supporting the weeding rod 9 is prevented from rattling during normal weeding work, and the operation by the swinging operation lever 15 is not significantly affected. It does not interfere with giving a slight friction resistance.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a side view showing the entire combine.

FIG. 2 is a rear view showing the entire weeding posture switching device.

FIG. 3 is a side view, a front view, and a sectional view showing a main part of the weeding posture switching device.

FIG. 4 is a sectional view showing another embodiment of a weeding posture switching device.

FIG. 5 is a rear view and a sectional view showing another embodiment of the weeding posture switching device.

6 is a partially enlarged explanatory view of the weeding posture switching device in FIG.

[Explanation of symbols]

 9-grass rod 10-grass posture switching device 15 Manual operation tool 16 Linkage mechanism 21 One-way control means

Claims (1)

[Claims] 1. A weeding rod (9) on the uncut side of the traveling machine body, the posture of which is freely switchable between a weeding posture that extends laterally outward of the machine body and a retracted posture that is pulled toward the traveling machine body side. A weeding posture switching device (1) which is arranged and which switches the posture of the weeding rod (9) to each of the postures.
0), which is a combine weeding device, in which the weeding posture switching device (10) is provided near the control section (5), and an artificial operating tool (15). ) And the weeding rod (9), and a linkage mechanism (16) for mechanically linking the weeding rod (9) to the weeding action side of the weeding rod (9) in the linkage mechanism (16). The one-way restraint means (21) for restraining the posture change of the storage posture and allowing the posture change to the storage posture side is provided, and the one-way restraint means (21) is used for the drafting production of the linkage mechanism (16). A combine weeding device which is configured to be released by the operation of the manual operation tool (15).