JPS5828052Y2 - Work equipment attachment/detachment device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a work implement attachment/detachment device for detachably attaching a work implement to the rear of a self-propelled vehicle such as a construction machine.

Conventionally, when work equipment is attached to the rear of a self-propelled vehicle, a cylinder for attaching and detaching the work equipment is provided in addition to a cylinder for raising and lowering the work equipment, resulting in multiple cylinders and complicated piping. This has the disadvantage that the device itself is expensive.

This invention was made for the purpose of eliminating such drawbacks, and provides a work equipment attachment/detachment device that makes it possible to raise/lower and attach/detach the work equipment with a small number of cylinders by using both the lifting cylinder and the attachment/detachment cylinder for the work equipment. The aim is to simplify piping and reduce the cost of the device itself.

This invention will be described in detail below with reference to an illustrated embodiment.

In the figure, reference numeral 1 denotes a vehicle body of a self-propelled vehicle such as a construction machine. A bracket 2 is fixed to the rear of the vehicle body 1, and a work implement 4 is attached to this bracket 2 via a work implement attachment/detachment device 3.

The work equipment attachment/detachment device 3 has two connecting rods 5 that are parallel to each other. One end side of these connecting rods 5 is pivotally attached to the lower part of the bracket 2 by a pin 6, and The other end is pivotally connected to the lower end of the first link 7 by a pin 8.

The first link 7 has a structure in which the lower end is connected by a rod 9, and the above-mentioned attachment is in a substantially C-shape provided on the rod 9 on the work machine 4 side, so that the lower end of the member 10 is engaged. It has become.

Also, on the upper end side of each first link 7, the upper end is attached to the rod 1.
The lower end side of the second link 13 connected by 2 or the shaft rod 14
The second link 1
3, the other end of an inclined link 15 is pivotally connected to a bracket 5a whose one end projects from the connecting rod 5.

A rod 12 is used to connect the upper ends of the second link 13.
The upper end of the member 10 is engaged with the attachment provided on the working machine 4, and the base end is pivotally attached to the bracket 2 at the intermediate portion of the second link 13. The tip of the drive cylinder 16 is pivotally mounted.

As shown in FIG. 2, the lifting and lowering movement of the working machine 4 attached to the vehicle body 1 via the working machine attaching/detaching device 3 is achieved by expanding and contracting the drive cylinder 16, which moves the connecting rod 5 around the pin 6. This is done by moving the side end of the working machine 4 up and down.

Next, to remove the work equipment 4 from the vehicle body 1, first
5 from the bracket 5a to the state shown in FIG.
Next, the drive cylinder 16 is shortened.

As a result, the connecting portion between the first link 7 and the second link 13 is bent as shown in FIG. 4, and the rod 12 attached to the second link 13 is lowered, and the attachment member 10 is disengaged from the upper part of the attached member 10. Therefore, in this state, the lower part of the first link 7 can be attached to the mounting rod 9 by releasing the lower part of the member 10.

Furthermore, when attaching the work implement 4 to the vehicle body 1, the operation opposite to the above may be performed.

As detailed above, this idea uses one type of cylinder to both raise and lower the work equipment as well as to attach and detach it, so there is no need to provide a cylinder for attaching and detaching separately from the cylinder for raising and lowering the work equipment as in the past. , these piping, etc. can be simplified, and the cost of the device itself can be reduced by reducing the number of cylinders used.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, with FIG. 1 being a perspective view and FIGS. 2 to 4 being explanatory views of the operation. 1 is a vehicle body, 2 is a bracket, 4 is a working machine, 5 is a connecting link, 5a is a bracket, 7 is a first link, 9 and 12 are mounting rods, 10 is a mounting member, 13 is a second link, 15
is an inclined link, and 16 is a drive cylinder.

Claims (1)

[Scope of utility model registration request] A bracket 2 provided at the rear of the vehicle body 1 of a self-propelled vehicle, a connecting link 5 connecting the lower part of the first non-link 7 whose lower end is connected by a rod 9, and the upper end of the first link 7 (and A second link 13 whose lower end side is pivoted and whose upper ends are connected by a rod 12, and a bracket 5a protruding from the lower end of the second link 13 and the upper end connecting rod 5 are removably connected. An inclined link 15 and a bracket 2 at one end.
A drive cylinder 16 is pivotally connected to the rods 9 and 12, and the other end is pivotally connected to the middle part of the second link 13. A work equipment attachment/detachment device comprising: