JPH1066428A - Apparatus for installing working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that many times and much labor for detaching a working machine part of a traveling vehicle are currently required. SOLUTION: This apparatus for installing a working machine is obtained by providing a pivoting part on both sides of the front of a traveling machine body A to pivot one end of a lifting and lowering arm 21, laterally installing a supporting shaft 23 vertically parallel to other end of the lifting and lowering arm, interposing a cylinder 29 between the right and left centers of the supporting shaft 23 and the traveling machine body, providing a hitch D having a hook 31 and a fixed metal fitting 32 in coincidence with the position of the lifting and lowering arm 21 so as to be detachable by lifting and lowering rotation of the lifting and lowering arm 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for mounting a working machine on a front portion of a traveling body.

[0002]

2. Description of the Related Art Conventionally, a mowing work vehicle in which a mowing machine is arranged at a front portion of a traveling body so as to be able to move up and down is known. The connecting portion between the mower and the machine of the mowing machine is provided with a support on the rear surface of the cover of the mower to pivotally support the front end of the lifting arm, and pivot the rear end of the lifting arm to the front of the machine. Then, a hydraulic cylinder is disposed between the rear part of the mower and the machine, and the mower can be moved up and down by extending and contracting the hydraulic cylinder.

[0003]

A conventional mowing machine is used when a mowing machine of a mowing machine is removed for maintenance and other working machines.
For example, when exchanging with a control machine, a tillage machine, a bucket, etc., it is necessary to remove the pin that pivotally supports the front end of the elevating arm, and remove the pivot pin at the tip of the piston rod of the hydraulic cylinder, which takes time and effort, Moreover, if a load is applied to either the mower or the lifting arm, the pin may not come off. Also, when installing, moving the mower to the main body requires a lot of labor to move the mower due to the heavy weight of the mower, and also requires fine adjustment of the positioning for inserting the pin Therefore, it was very troublesome.

[0004]

The present invention uses the following means in order to solve the above problems. That is, a pivot portion is provided on both sides of the front portion of the traveling body to pivotally support one end of the elevating arm, and a support shaft is laid horizontally parallel to the other end of the elevating arm, and the center of the traveling shaft and the left and right center of the support shaft are provided. A hitch having a hook and a fixing fitting is provided on both sides of the non-working side of the working machine in accordance with the position of the lifting arm, and the hitch can be removed by rotating the lifting arm up and down. It is configured as follows.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems and means to be solved by the present invention are as described above. Next, an embodiment of the present invention shown in the attached drawings will be described. FIG. 1 is a side view of a mowing work vehicle employing the work machine mounting device of the present invention, FIG. 2 is a side view of the mowing machine also removed, FIG. 3 is a plan view of the same, FIG. FIG. 5 is a side view of the hitch and the lifting arm.

A general construction of a mowing vehicle using a mower as a working machine will be described with reference to FIGS. The mowing work vehicle has a mowing machine C mounted on a front part of a traveling machine body (the machine) A via a working machine mounting device B of the present invention. The traveling machine body A is mounted on a crawler type traveling device 1 with an engine and a transmission case. Put on,
It is covered by the main body cover 2. An operation unit 3 is disposed on a rear portion of the main body cover 2, and a handle 4 and a traveling lever 5 are provided.
Further, an elevating switch 8 provided on the traveling lever 5, a clutch lever 6, an accelerator lever 7, and the like are arranged. In addition, a step 9 is disposed at the rear of the fuselage so as to be folded upward and stowable, so that an operator can walk while stepping.
You can operate while driving.

A power take-out case 10 is disposed at the center of the front of the traveling machine body A, and a PTO shaft protrudes from a side portion of the power take-out case 10, and an output pulley 11 is fixed to the PTO shaft. On the other hand, a transmission bearing 14 is provided horizontally on the right upper portion of the cover 13 of the mower C, and the transmission bearing 14
An input pulley 12 is fixedly mounted at one end of the transmission shaft, and the other end is input to a transmission case 15 provided on the side of the mower C. The input pulley 12 and the output pulley 11 A belt 16 is wound between them, and the cutting blade in the cover 13 is driven via a transmission shaft and a transmission case.

Next, the configuration of the work machine mounting device B of the present invention will be described. As shown in FIG. 1, FIG. 2, and FIG. 3, pivot portions are arranged on both sides of the front of the traveling body A. In this embodiment, the support frames 20 project from the track frame. Lifting arm 21.2
One rear end is pivotally supported by pivot pins 22.
As shown in FIGS. 4 and 5, the lifting arm 21 comprises a pipe portion 21a and plate portions 21b and 21b. A pivot hole 21c is provided at the rear end of the pipe portion 21a. 22 and a substantially triangular plate portion 21b 21b is fixedly provided on both sides of the front portion of the pipe portion 21a.
One end of the support shaft 23 is fixedly mounted on the upper apex 21d of the support 21b, and the other end of the support shaft 23 is fixedly mounted on the other elevating arm 21, so that the support shaft 23 is provided between the plate portions 21b and 21b of the upper apex 21d. Are penetrated to form an engagement shaft 23a.

Then, the lower top portion 21e of the plate portion 21b
One end of a support shaft 24 is fixed to a side surface of the support shaft 24, and the support shaft 24 is provided horizontally between the plate portions 21b on both inner sides in parallel with the support shaft 23. The lower top 2
1e is provided with a pin hole 21f and a plate portion 21b.
A space is provided between 21b and the lower end is reinforced by a support stay 25.

As shown in FIG. 3, support plates 26 are fixedly mounted at the center of the support shafts 23 and 24, and a pivotal support 27 is disposed below the front center of the traveling body A. A hydraulic cylinder 29 is interposed between the pivot 27 and the support plate 26, and the elevating arm 21 can be turned up and down by expansion and contraction of the hydraulic cylinder 29.

A hitch D is provided on both sides of the upper rear surface of the cover 13 of the mowing machine C.
3, mounting plates 30 are fixed to the upper rear surface, and hooks 31 and fixing brackets 32 are protruded rearward from the mounting plate 30. The hooks 31 and the fixing brackets 32 are respectively provided on the top 21d of the elevating arm 21. Engagement shaft 23a and lower top 2
1e, the hook 31 and the fixture 3 are arranged between the plate portions 21b.
2 can be inserted. The hook 31 is reinforced by fixing a reinforcing plate 33 on the upper surface, and the hook 31 is opened by notching a lower portion to form a concave portion 31a, and the concave portion 31a has a shape corresponding to the outer diameter of the engagement shaft 23a. The engaging shaft 23a can be locked. The fixing bracket 32 has a triangular shape in a side view, and a pin hole 32a is opened at the center in the left-right direction, and a pin hole 21f of the lower apex 21e is formed.
The fixing bracket 32 can be fixed to the elevating arm 21 by inserting the pin 34 into both of them with their centers aligned. The distance between the center of the concave portion 31a of the hook 31 and the center of the pin hole 32a is equal to the distance between the center of the engaging shaft 23a and the center of the pin hole 21f, and the center of the concave portion 31a of the hook 31. The distance from the center of the pin hole 32a to the mounting plate 30 is equal to the distance from the center of the engagement shaft 23a and the center of the pin hole 21f to the front end face of the plate portion 21b. A tapered portion 19 is formed inside the plate portions 21b on both sides of the engagement shaft 23a.
19 is provided, or the front surface of the plate portions 21b is widened to the left and right sides to facilitate insertion of the hook 31 and the fixing bracket 32.

In such a configuration, when the mower C is removed from the traveling machine A, the belt 16 is removed, the pin 34 connecting the lower apex 21e of the elevating arm 21 and the fixing bracket 32 is removed, and the hydraulic cylinder 29 is removed. When the contraction is performed, the engaging shaft 23a is disengaged from the hook 31, and when the traveling body A is moved backward in this state, the mowing machine C can be detached from the traveling body A as shown in FIGS. Mowing machine C on traveling body A
In the case of mounting, on the contrary, the hydraulic cylinder 29 is contracted, and the hydraulic cylinder 29 is extended and lowered while the elevating arm 21 is lowered to adjust the position of the hook 31 and the plate portion 21b. When the arm 21 is rotated upward, the left and right engagement shafts 23a
The mower C is lifted by engaging with 1.31. Then, the mower C rotates around the engagement shafts 23a, 23a, and the front surface of the plate portion 21b comes into contact with the mounting plate 30 and stops. In this state, the pin hole 32a of the fixing bracket 32 and the lifting arm 21 Pin holes 21f are aligned with each other.
And can be easily fixed.

[0013]

According to the present invention, the following effects can be obtained by the configuration described above. That is, the work machine can be removed simply by pulling out the pin and lowering the lifting arm, the tip of the lifting arm is locked to the hook, and the lifting arm is raised,
It can be attached simply by inserting a pin, the operation for attaching and detaching is easy, there are few detachable parts, and no adjustment is required, so the time required for attaching and detaching is reduced and it can be attached and detached in a short time, In addition, it was possible to do the work of putting on and taking off alone.

[Brief description of the drawings]

FIG. 1 is a side view of a mowing work vehicle employing a work machine mounting device of the present invention.

FIG. 2 is a side view showing a state where the mower is removed.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of a lifting arm.

FIG. 5 is a side view of a hitch and a lifting arm.

[Explanation of symbols]

 A running machine C mower D hitch 21 elevating arm 23/24 support shaft 29 cylinder 31 hook 32 fixing bracket

Claims (1)

[Claims] 1. A traveling support body is provided on both sides of a front portion thereof to pivotally support one end of an elevating arm, and a support shaft is horizontally disposed vertically parallel to the other end of the elevating arm, and a left and right center of the support shaft is provided. And a cylinder between the traveling body
A hitch having a hook and a fixing fitting is provided on both sides of the non-working side of the working machine in accordance with the position of the lifting arm, and the hitch is configured to be detachable by vertically rotating the lifting arm. apparatus.