JPH0310091Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an air cleaner hose mounting structure for a power working machine.

In this invention, in a power working machine such as a backhoe, the joint between the pipe that connects the air cleaner to the driving part and the side wall of the bonnet, etc. that covers the driving part is connected using a bellows-type joining member made of an elastic material. It is configured to support the hose, absorbing the misalignment of the center of the hose insertion hole drilled in the side wall of the bonnet, making it easy to install the hose, and preventing engine noise from inside the bonnet from entering the outside of the pipe insertion hole. It is an object of the present invention to provide an air cleaner hose mounting structure for a power working machine that can prevent the air cleaner hose from coming out.

An embodiment of this invention will be described in detail with reference to the drawings. A is a backhoe which is an example of a power working machine, and a machine body a is provided above the traveling part 1 via a turntable so as to be able to turn freely. A boom 2 that can be raised and lowered by a hydraulic cylinder is attached to the front end of the machine a, and a bucket 3 at the tip of the boom 2 performs excavation and transportation work.

A cabin 4 having a driver's seat inside is provided on one side of the aircraft body a, and a driving unit 5 is provided at the rear of the opposite side of the cabin 4.

The driving part 5 is covered with a bonnet 6,
Inside the bonnet 6, an engine 7, a fan 8, a radiator 9, a vertical exhaust flow path 10, a muffler 11, etc. are housed, and the engine 7 communicates with an air cleaner 12 installed in front of the bonnet 6. A hose 13 for this purpose is extended.

The front side wall 6' of the bonnet 6 is formed in a slightly inclined shape, and approximately in the center of the front side wall 6', there is a
A circular hole 6-1 for pipe insertion is provided.
A joining member B is attached to -1 to close the hole 6-1, and a hose 13 is inserted into the hose insertion hole 14 provided in the joining member B in airtight contact. .

That is, the joining member B is constituted by a bellows-type annular body which is formed into a bellows-like cross section and is flexible concentrically from the center, and is made of an elastic material such as rubber or synthetic resin. , a hose insertion hole 14 is provided, and the inner peripheral edge of the insertion hole 14 has a protruding edge 15 that contacts the outer peripheral surface of the hose in an airtight manner.
is formed.

Further, the outer peripheral edge of the joining member B is provided with an outer edge 16 having a substantially U-shaped cross section, and the outer edge 16 holds the circular hole edge 17 of the front wall 6' of the bonnet 6. It is connected to the front side wall 6'.

The embodiment of this invention is constructed as described above, and the hose 13 of the air cleaner 12 is
When performing installation work by inserting the screw into the front wall 6' of the bonnet 6,
The joining member B is attached to the circular hole edge 17 provided in the joining member B, and the hose 13 is inserted into the hose insertion hole 14 of the joining member B.
The hose is placed in close contact with the outer peripheral surface of the hose, and the hose 13 may not necessarily be located at the center of the circular hole 6-1 provided in the front wall 6' of the bonnet 6, but may be slightly Displacement of the piping is absorbed by the elasticity of the bellows-type annular body, and the airtightness between the front wall 6' of the bonnet 6 and the outer periphery of the hose 13 is maintained.

According to this invention, since a joining member of a bellows-type annular body formed with a bellows-shaped cross section and flexible concentrically is interposed on the outer circumference of the hose, the positioning of the hose can be made with a certain degree of elasticity during hose piping work. This eliminates the trouble of locating the hose accurately, and since the outer circumference of the hose is tightly inserted into the bonnet side wall, noise such as engine noise inside the bonnet is emitted to the outside. It has the effect of preventing this.

In addition, in this invention, the middle part of the hose is supported by a joining member with a bellows-shaped cross section, so it is possible to reliably prevent the hose from swinging, and it is also able to absorb high-frequency noise generated within the air cleaner. Therefore, it does not cause discomfort to the operator.

[Brief explanation of the drawing]

FIG. 1 is a side view of the backhoe of the proposed structure. FIG. 2 is a plan view of the same. FIG. 3 is an enlarged cross-sectional view of the main part. FIG. 4 is an explanatory diagram of the proposed structure. FIG. 5 is an explanatory diagram of the joining member. A: backhoe, B: joining member, 6: bonnet, 6-1: circular hole, 13: hose, 15: projecting edge.

Claims (1)

[Scope of utility model registration request] A circular hose insertion hole 6-1 provided in the bonnet side wall 6' allows a hose 13 to communicate between the engine 7 mounted inside the bonnet 6 of the power working machine and the air cleaner 12 fixed to the front of the bonnet 6.
At the same time, a connecting member B having a bellows-shaped cross section is interposed between the outer periphery of the hose 13 and the circular hole 6-1 for hose insertion, and the intermediate portion of the hose 13 is inserted through the connecting member B. An air cleaner hose mounting structure for a power working machine characterized by supporting the air cleaner hose.