JPH0554172U - Brush cutter - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a brush cutter capable of performing work traveling in a state where the weight balance of the machine body is stable even when the mowing work area and the walkable area are separated. [Structure] The cutting machine 1 is provided in the front part of the traveling machine body, and the steering handle 7 and the driving section 4 are provided in the rear part of the traveling machine body.
Are integrally connected to the traveling wheels 6 of the traveling machine body so as to be rotatable relative to each other around the longitudinal axis.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a brush cutter, and more particularly to a brush cutter having a mowing work unit at a front portion of a traveling body.

[0002]

[Prior Art]

 In the above brush cutter, there has been a conventional one in which a steering handle is configured to be rotatable relative to a traveling machine body around a vertical axis [for example, as a walking type working machine, for example, Japanese Utility Model Laid-Open No. 62-120078]. Refer to the official gazette].

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional structure enables the pilot to operate by setting the steering handle diagonally with respect to the direction of travel of the aircraft when working along the wall or when it is desired for the worker to avoid walking in the work area. It was done. However, it is not possible to cope with the above-mentioned conventional structure provided with a mowing work part in the front part, for example, in the case where the mowing target location, the wheel traveling location and the operator walking location are misaligned respectively. It was a thing. Therefore, as a method of solving such a problem, it is conceivable that the steering handle and the mowing work unit are configured to be rotatable relative to each other about the longitudinal axis with respect to the traveling machine body. In this case, since the reaping work section is laterally biased with respect to the traveling machine body, the left-right weight balance becomes unbalanced and there is an adverse effect that it is difficult to control. The purpose of the present invention is to solve the above problems and improve the performance of mowing work.

[0004]

[Means for Solving the Problems]

 According to a characteristic configuration of the present invention, a mowing work part is provided at a front part of the traveling machine body, a steering handle and a driving part are provided at a rear part of the traveling machine body, and the mowing work part, the steering handle and the driving part are provided for traveling the traveling machine body. The point is that they are integrally connected to the wheels so as to be rotatable relative to each other around the longitudinal axis.

[0005]

[Action]

 Since the mowing work part, the steering handle and the driving part are integrally rotatable relative to the axis of the vertical axis with respect to the traveling wheels having the function of propulsion of the airframe by supporting the airframe on the ground. It is possible to move the aircraft with the mowing work part located on the right side of the wheel travel area and the steering handle and the drive part located on the left side of the wheel travel area. It becomes possible to perform work traveling in a state where the traveling area and the operator walking area are different from each other. Moreover, it is possible to set the mowing work section and the driving section at the target positions with respect to the ground contact point of the wheel.

[0006]

[Effect of the device]

 Therefore, it is possible to work while keeping the mowing work part, the driving part and the steering handle in an oblique position with respect to the traveling direction of the aircraft, and thus when the mowing work area and the walkable area are separated from each other. Even if there is, it is possible to work while the weight balance of the machine is stable, and the reaping work performance is improved.

[0007]

【Example】

 Embodiments will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a reaping work unit 1 is provided at a front portion of a walk-behind traveling machine body to configure a brush cutter. The traveling machine body has a driving part 4 integrally connecting the engine 2 and the mission case 3 to the rear part thereof, and a wheel transmission case 5 extending downward from one lateral side of the mission case 3 to extend the wheel transmission case. One propulsion wheel wheel 6 is supported on the lower part of the vehicle 5, and the steering wheel 7 is extended from the upper part of the mission case 3 toward the upper rear to form a one-wheel walking type.

The mowing work unit 1 is configured to include a mowing device 9 at the tip of a pipe frame 8 fixedly extending forward and downward from the mission case 3. That is, the cutting blade 13 made of a plurality of rod-shaped steel materials is attached to the rotating body 12 which is rotationally driven by being supplied with power from the transmission case 3 via the transmission shaft 10 in the pipe frame 8 and the bevel gear mechanism 11. The device 9 is configured. As shown in FIG. 5, the power taken out by the mowing device 9 is supplied from the lateral transmission shaft 14 in the mission case 3 to the transmission shaft 10 via the bevel gear mechanism 15, and further from the lateral transmission shaft 14 to the bevel gear. A power transmission system is configured to supply power to a vertically oriented wheel drive shaft 17 disposed in the wheel transmission case 5 via a mechanism 16 and drive a wheel 6 via a bevel gear mechanism 18 at a lower end portion. .. The bevel gear mechanism 15 for the harvesting device 9 has a speed increasing function. The wheel transmission case 5 is configured to be rotatable relative to the transmission case 3 about the axis of the wheel drive shaft 17. That is, as shown in FIG. 3, a flange 19 is formed on the connecting portion of the mission case 3 and the connecting portion of the wheel transmission case 5, a bolt insertion hole 20 is formed on one side of the flange 19, and a long hole 21 is formed on the other side. Is formed, and the connecting bolts 22 are inserted through these so as to be tightened and connected, and the bolts 22 are loosened a little and relatively rotated, and then they are tightened and fixed again so that the rotation can be adjusted. There is. With this configuration, for example, as shown in FIG. 4, when the mowing work area K1 and the operator's walkable area K2 are separated from each other, the steering handle 7 and the prime mover are moved with respect to the wheels 6. By rotating the part 4 to the left with respect to the traveling direction and rotating the mowing work part 1 to the right, it is possible to perform mowing work while traveling at an intermediate position between the mowing work part 1 and the control handle 7 with the wheels 6. Of.

Further, in this brush cutter, the cutting work unit 1 is configured such that a working device for cutting and harvesting grain stems can be replaced. When the working device for cutting and harvesting the grain culm is installed, the pipe frame 8 is removed from the mission case 3 as shown in FIG. 6, and the raising support case 24 of the pre-cutting processing device 23 and the cutting part are cut. The grass frame 25 is connected to the grass frame 25, power is taken out from both ends of the lateral transmission shaft 14 and is raised to drive the left and right raising device 30 via the transmission shaft 26 passing through the support case 24. The power is transmitted to the binding device 29 via the bevel gear mechanism 28 from the middle of one of the transmissions.

The number of the wheels 6 is not limited to one provided at the center of the left and right, and two wheels 6 may be provided at the left and right.

In the claims of the utility model, reference numerals are provided for easy comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 Side view of a brush cutter

[Fig. 2] Front view of a brush cutter

FIG. 3 is a plan view of a rotation adjusting unit.

FIG. 4 is a plan view showing a working state.

FIG. 5 is a plan view showing a transmission system.

FIG. 6 is a plan view showing the transmission system with the pre-mowing treatment device attached.

[Explanation of symbols]

 1 Mowing work part 4 Driving part 6 Wheels 7 Steering handle

Claims (1)

[Scope of utility model registration request] 1. A reaping work part (1) is provided at a front part of a traveling machine body, and a steering handle (7) and a driving part (4) are provided at a rear part of the traveling machine body. A bush cutter (7) and a drive part (4) are integrally connected to a traveling wheel (6) of a traveling machine body so as to be rotatable relative to each other around a longitudinal axis.