JPH0631404U - Agricultural tractor work machine lateral movement device - Google Patents

Abstract

(57) [Summary] [Purpose] Only the rotary working machine, which is connected to the rear of the agricultural tractor via a three-point link mechanism, can be effectively moved laterally to the left and right sides of the machine body. [Structure] In an agricultural tractor in which a rotary working machine B having a plowing width substantially the same as the outer width of both rear wheels 1 and 1 is connected to the rear of the machine body via a three-point link mechanism C, the three-point link mechanism C is used.
Inside the lower links 2a, 2b on both sides of the lower part of the vehicle, the other ends of the hydraulic cylinders 4a, 4b, one end of which is connected to the rear case 3 side at the rear of the machine body, are connected to each other, and the lower links 2a, 2b are connected to each other. It is configured so that it can be tilted laterally on the left and right sides of the machine body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a work machine lateral movement device for an agricultural tractor capable of moving and adjusting a rotary work machine connected to the rear of the machine body in left and right lateral directions of the machine body.

[0002]

[Prior art]

 Conventionally, in an agricultural tractor in which a rotary working machine having a plowing width approximately the same as the outer width of both rear wheels is connected to the rear of the machine via a three-point link mechanism, both lower links on both lower sides of the three-point link mechanism are connected. The chain type stabilizers are connected to each other.

[0003]

[Problems to be solved by the device]

 However, it is not possible to move and adjust the rotary working machine laterally to the left and right sides of the machine with respect to the agricultural tractor at any time, so when adjoining tillage, the front and rear wheels of the agricultural tractor fall into the groove side or the front and rear wheels. However, it is too far from the cultivated land and residual plowing is possible.

[0004]

[Means for Solving the Problems]

 The present invention has been devised to solve such problems and to perform rotary work effectively. Therefore, one end side is inside the lower links on both sides of the lower part of the three-point link mechanism. The other end of both hydraulic cylinders connected to the rear case of the rear part is connected to each other, and both lower links can be tilted laterally to the left and right sides of the machine body.

[0005]

[Action]

 Therefore, if both hydraulic cylinders are expanded and contracted alternately, both lower links will simultaneously tilt to the left and right in the horizontal direction, and the rotary work machine can be moved laterally with respect to the agricultural tractor. When cultivating, the agricultural tractor can drive the rotary working machine to the side of the already cultivated land and effectively perform the tilling work while traveling on the uncultivated ground.

[0006]

【Example】

 A indicates a conventional agricultural tractor, and B indicates a conventional rotary working machine. The outer widths of the rear wheels 1 and 1 of the agricultural tractor A are substantially the same as the tilling width of the rotary working machine B. The rotary work machine B at the rear of the agricultural tractor A is connected to the rear part of the agricultural tractor A through a three-point link mechanism C composed of both lower links 2a and 2b and a top link 2c. Both lift arms 6a and 6b extending from a hydraulic device 5 mounted on the rear case 3 and the lower links 2a and 2b are connected to each other via lift links 7a and 7b, respectively, to have the same structure as the conventional structure.

The front ends of the lower links 2a and 2b are connected to the rear lower part of the rear case 3 through ball joints 8 and 8 respectively, and are arranged inside the lower links 2a and 2b. The front ends of the hydraulic cylinders 4a and 4b are connected to the lower rear sides of the rear case 3 through play with connecting pins 9 and 9, respectively, and the rear ends of the hydraulic cylinders 4a and 4b are connected to the lower ends. The links 2a and 2b are connected to the inner side portions near the rear ends of the links 2 through play with connecting pins 10 and 10, respectively, and are rotated by a switching lever 12 provided on the instrument panel 11 of the agricultural tractor A. The hydraulic cylinders 4a and 4b are alternately expanded and contracted, or the hydraulic cylinders 4a and 4b are automatically expanded or contracted each time the rotary working machine B is raised. Configured to work.

Therefore, when one hydraulic cylinder 4a is expanded and the other hydraulic cylinder 4b is contracted, both lower links 2a and 2b are moved to the left side in the lateral direction as shown by arrow a as shown in FIG. In addition to tilting, the rotary working machine B can be moved laterally in the direction of arrow A with respect to the agricultural tractor A. Conversely, when the hydraulic cylinder 4a is contracted and the hydraulic cylinder 4b is expanded, the rotary work machine B is expanded. This means that the working machine B can be moved to the right in the reverse arrow B direction. As shown in FIG. 4, when the working machine B is adjacent to the left cultivated land and moves forward in the arrow B direction, the rotary working machine B Can be moved toward the cultivated land side by moving it in the direction of arrow a. Also, after the aircraft turns on the headland side as shown by arrow c, When advancing in the arrow D direction adjacent to the cultivated land, the rotary operation can be effectively performed by moving the rotary working machine B to the right side in the arrow E direction while approaching the cultivated land side.

[0009]

[Effect of device]

 As described above, the present invention allows the rotary working machine B to move laterally with respect to the agricultural tractor A by alternately expanding and contracting the hydraulic cylinders 4a and 4b, and simultaneously tilting the lower links 2a and 2b to the left and right in the lateral direction. Therefore, when performing adjacent tillage, the agricultural tractor A is effectively traveling on the uncultivated land, and is effective so that the rotary working machine B is moved toward the already cultivated land side to prevent residual cultivation. Since it is possible to perform tillage work, it has a feature that it can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a plan view showing an essential part of an embodiment of the present invention.

FIG. 2 is a plan view showing a part of an agricultural tractor.

FIG. 3 is a plan view showing an operating state of FIG.

FIG. 4 is a plan view showing a main part during work.

[Explanation of symbols]

 1 Rear Wheel A Agricultural Tractor B Rotary Working Machine C 3 Point Link Mechanism 2a Lower Link 2b Lower Link 3 Rear Case 4a Hydraulic Cylinder 4b Hydraulic Cylinder

Claims (1)

[Scope of utility model registration request] 1. An agricultural tractor in which a rotary working machine B having a plowing width substantially the same as the outer width of both rear wheels 1 and 1 is connected to the rear of the machine body via a three-point link mechanism C. Inside the both lower links 2a, 2b on both sides, the other ends of both hydraulic cylinders 4a, 4b whose one end side is connected to the rear case 3 side at the rear of the machine body are connected respectively, and both lower links 2a, 2b are connected to the inside of the machine body. A work machine lateral movement device, which is configured to be tiltable in the left-right lateral direction.