JPS6319409Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a work vehicle equipped with a fluid-pressure-driven backhoe device and a dozer device. The purpose is to improve the means to be simple in terms of structure and operation.

Next, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 1, a swivel base 2 is attached to a tire-type traveling vehicle body 1 so that it can be driven and rotated freely around the vertical axis, and trenches can be dug in the front part of the swivel base 2 using hydraulic cylinders 3a and 3b. Backhoe device 4
A tower driving section 5 and a driving section 6 are provided at the rear, and a dozer device 8 that is raised and lowered by a fluid pressure cylinder 7 is provided on the traveling vehicle body 1, making it possible to carry out excavation work, earth removal work, and running on the road. It is configured as a working vehicle.

As shown in FIG. 2, when the dozer device 3 is levitated above the ground by the fluid pressure cylinder 7, the dozer device 3 is installed as a mechanical fixture across the bottom side support shaft 9a and the rod side support shaft 9b of the cylinder 7. The chain 10 of the cylinder 7 is stretched such that it can be freely operated to release the action.
The chain 10 is configured to prevent the dozer device 3 from descending due to fluid leakage, and the bucket belt 11 of the backhoe device 4 is
The engaging recess formed by the notch 12 formed in the protruding portion of the side plate 11a toward the back of the bottom plate 11b is engaged with the engaging part of the dozer device 8 fixed by the chain 10. The chain 10 is also configured to prevent the backhoe device from descending due to fluid leakage.

The locking portion includes a locking piece 13a that acts on the notch 12 to prevent the bucket bag 11 from descending.
and a bent plate-like member 13 consisting of an abutment piece 13b that abuts against the side plate 11a to restrict its lateral movement.
are connected to the upper part of the dozer device 8.

Note that the notch 12 may be directly engaged with the upper edge corner of the dozer device 8.

Furthermore, instead of the chain 10, various means such as wires and rods can be used, and these are collectively referred to as the mechanical fixture 10.

In summary, the dozer-equipped backhoe work vehicle according to the present invention has the bucket 11 of the fluid-pressure-driven backhoe device 4, and the bottom plate 11b of the side plates 11a.
The engagement recess 12 formed on the back side is inserted into the dozer device 8.
A mechanical fixture 10 is configured to be able to be received by the dozer device 8 which is levitated above the ground by the fluid pressure cylinder 7 while being locked to the dozer device 7, and which prevents the dozer device 8 from descending. 12
and the traveling vehicle body 1 on which the dozer device 12 is mounted, so that it can be freely operated and released.

That is, conventionally, in order to prevent unexpected lowering due to fluid leakage and to enable safe travel, fixing devices 1 are attached to the backhoe device 4 and the dozer device 8, respectively.
0, the structure was complicated and it was inconvenient to handle, but as mentioned above,
The dozer device 8 with the bucket 11 locked is attached to the fixture 1
By locking at 0, the number of fixing tools 10 is reduced, the handling is easy, and a backhoe work vehicle with a dozer that is advantageous in terms of safety, production, cost, and operation as a whole can be provided.

In addition, when fixing the bucket 11 using the mechanical fixture 10 of the dozer device 8, the back of the bucket 11 is not directly received and supported by the earth removal surface of the dozer device 8, but the bucket 11 is The engaging recess 12 formed on the back side of the dozer device 8
Since the structure is such that the bucket can be easily received and received even if the back shape of the bucket 11 does not follow the earth removal surface of the dozer device 8, the bucket can be easily received and supported. 11 has a large degree of freedom in designing the shape of the back.

Moreover, since the engagement means formed on the back side of the bucket 11 is not a protrusion but an engagement recess, there is no risk of creating a large resistance during excavation.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of a backhoe work vehicle with a dozer according to the present invention, in which FIG. 1 is an overall side view, FIG. 2 is a partially cutaway side view, and FIG. 3 is a perspective view of the main part. 4... Backhoe device, 7... Fluid pressure cylinder, 8... Dozer device, 10... Fixture, 11...
...bucket, 11a...bucket side plate, 11b...
... Bucket bottom plate, 12 ... Notch, 13 ... Plate member, 13a ... Locking piece, 13b ... Contact piece.

Claims (1)

[Scope of utility model registration request] Bucket 11 of fluid pressure driven bucket hoe device 4
can be received by the dozer device 8 which is levitated above the ground by the fluid pressure cylinder 7, with the engaging recess 12 formed on the back side of the bottom plate 11b of the side plate 11a being engaged with the dozer device 8. At the same time, a mechanical fixture 10 for preventing the dozer device 8 from lowering is provided between the dozer device 12 and the traveling vehicle body 1 on which the dozer device 12 is mounted, so that the dozer device 8 can be freely operated and released. Batsukuhou work vehicle.