JPH0328728Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention connects a ground work device to the machine through an elevating link consisting of a top link and a lower link so that it can swing up and down, and The present invention relates to a paddy field working machine in which a cylinder for driving the device up and down is connected to the top link via a spring buffer mechanism.

[Conventional technology]

Conventionally, in this type of paddy field work machine, a lifting link has been constructed of a single top link and a pair of left and right lower links.

[Problem that the invention aims to solve] However, in this case, since there is only one top link, the rigidity of the lift link as a whole is low, and in order to increase this rigidity, it is necessary to increase the strength of each member. It was necessary to make it larger with improved performance.

The purpose of this invention is to suppress the increase in the strength of each member, while
The object of the present invention is to provide a modified elevating link with increased rigidity, while increasing the rigidity as a whole, and to which other functions can be added.

[Means for solving problems]

The characteristic configuration of the present invention is that a spring-type buffer mechanism is located between a pair of top links arranged side by side on the left and right, and the spacing between the top links is set so that the inner surface of the top links approaches the outer circumferential surface of the spring. Its functions and effects are as follows.

[Effect]

In other words, by modifying the top link to include a pair of left and right members, the rigidity of the lift link as a whole can be improved without increasing the strength of the members.

[Effect of idea]

As a result, by improving the rigidity, the elevating link can have a more stable support function even against weight changes due to adhesion of mud to the ground work equipment.

Moreover, the pair of top links are not simply arranged side by side, but the distance between them is set so that the inner surface of the top link is close to the outer circumferential surface of the spring. By positioning the top links between the top links, the top links can be configured to double as a guide for restricting movement in a direction perpendicular to the direction of expansion and contraction of the spring. No cover required.

Therefore, the two top links used for the strength structure can be given the functions of position regulation and guide, and can also contribute to the reduction of the number of parts.

〔Example〕

As shown in FIG. 5, a fuselage A having an engine 1 in the front and a driver's seat 2 in the middle is supported by front and rear wheels 3 and 4, and a pair of left and right top links 5A and 5B are attached to the rear end of the fuselage A. A hydraulic cylinder 8 is connected to the hydraulic cylinder 8 via an elevating link 7 consisting of a pair of left and right lower links 6.
A seedling planting device 9, which is one of the ground working devices, is connected to the seedling planting device 9, which can be driven up and down, to form a riding type rice transplanter, which is one of the paddy field working devices.

As shown in FIGS. 3 and 4, the driver's seat 2 is fitted into and held by a boss 10 on the fuselage frame side, and is configured to be able to change its orientation forward and backward around the vertical axis Mechanism 11
It is equipped with The locking mechanism 11 is connected to the boss 1
The seat frame 12 is made up of a fixing pin 13 that passes through the seat frame 12, an actuating arm 14 for inserting and removing the fixing pin 13, and a wire 15 that interlocks and connects the fixing pin 13 and the actuating arm 14. An elevating lever 16 connected to a control valve (not shown) for the hydraulic cylinder 8 for driving the elevating link 7 is provided near the actuating arm 14, and the actuating arm 14 is brought into contact by switching the elevating lever 16. It is set to work. In other words, the actuating arm 14 is caused to swing as the lift lever 16 swings from the neutral position to the seat rotation position.
Therefore, when supplying seedlings to the seedling stand 17, it is possible to work with the seat 2 facing sideways.

As shown in FIGS. 1 and 2, the base end of the hydraulic cylinder 8 is pivoted up and down relative to the vertical frames 18 and 18 on the fuselage frame side, which are pivotally supported so that the base ends of the top links 5A and 5B can move up and down. The other end of the hydraulic cylinder 8 is connected to the top link 5.
A piston rod 20 is passed through a bracket 19 which is pivotally supported between A and 5B so as to be able to swing up and down, and the piston rod 20 is fixed so as to be slidable in the axial direction and not to be removed. A flange 21 is fixed to the piston rod 20, and a coil spring 22 is interposed between the flange 21 and the bracket 19 to form a buffer mechanism that absorbs and alleviates minute vibrations when the seedling planting device 9 is in contact with the ground. It has been done. The top links 5A and 5B are arranged side by side so that the inner surfaces 5a and 5b of the top links are close to the outer circumferential surface of the spring 22, with the coil spring 22 positioned within the space between them.

[Another example]

The paddy field working machine may be equipped with a seeding/fertilizing device.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice paddy work machine according to the present invention, and FIG. 1 is a plan view showing the spring-type shock absorbing mechanism installed, FIG. 2 is a side view showing the spring-type shock absorbing mechanism installed, and FIG. 3 is a side view showing the spring-type shock absorbing mechanism installed. 4 is a cross-sectional plan view showing the driver's seat locking mechanism, FIG. 4 is a front view showing the driver's seat locking mechanism, and FIG. 5 is an overall side view. A... This machine, 5A, 5B... Top link, 6
...Lower link, 8...Cylinder, 9...Ground work device, 22...Spring type shock absorbing mechanism.

Claims (1)

[Scope of utility model registration request] A ground work device 9 is connected to the machine A so as to be able to swing up and down via a lift link 7 consisting of a top link 5A and lower links 6, 6, and a cylinder 8 for driving the ground work device 9 up and down is connected to a spring. The rice paddy working machine is connected to the top link 5A via a spring-type shock absorbing mechanism 22, and the spring-type shock absorbing mechanism 22 is positioned between a pair of top links 5A and 5B arranged side by side on the left and right. A paddy field work machine in which the distance between top links 5A and 5B is set such that the inner surfaces of 5A and 5B are close to the outer peripheral surface of the spring.