JPH0519397Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a backhoe work vehicle in which a floor pedestal is arranged near the inside of the driving cabin, and a floor is detachably attached to the floor pedestal.

[Conventional technology]

In the above-mentioned backhoe work vehicle, hydraulic control valves and piping for the backhoe device and crawler-type traveling device are arranged at the bottom of the floor of the driving cabin, and for maintenance and inspection of these, the operating cabin is It is necessary to look into the space under the floor, so the floor is removably attached to the floor cradle.

Conventionally, in the above-mentioned backhoe work vehicle, there has been a gap in the vertical direction between the lower part of the driving cabin and the floor in order to attach and detach the floor.

[Problem that the invention attempts to solve]

However, noise from the driving parts, hydraulic equipment, etc. propagates from below the floor into the operating cabin through the gap between the operating cabin and the floor, which tends to worsen the operating environment, leaving room for further improvement.

The purpose of the present invention is to make it possible to effectively suppress the propagation of noise from below the floor into the operating cabin with simple modification, and to prevent the structure for this from being damaged by the installation and removal of the floor.

[Means for solving problems]

The characteristic configuration of this invention is that the lower part of the driving cabin,
The sound-absorbing material is filled in the gap between it and the floor pedestal placed near the inside, and its functions and effects are as follows.

[Effect]

In other words, it has been found through experiments that filling the gap with sound absorbing material as described above can effectively suppress the propagation of noise from below the floor into the operating cabin.

Furthermore, for example, if a sound absorbing material is filled between the operating cabin and the floor, the sound absorbing material is likely to be damaged when the floor is attached or removed, but if the sound absorbing material is filled between the operating cabin and the floor pedestal as in the present invention, Eliminates damage to sound absorbing materials due to floor installation and removal.

[Effect of idea]

As a result, by simply filling the gaps with sound-absorbing material, a modification that requires very little manufacturing or cost burden can sufficiently suppress noise propagation from below the floor, making the interior of the operating cabin sufficiently quiet. and,
The sound insulation effect can be reliably maintained over a long period of time regardless of whether the floor is attached or removed, making it possible to provide a backhoe work vehicle with a good operating environment.

〔Example〕

Next, examples will be shown.

As shown in FIG. 3, a swivel platform 4 equipped with a backhoe device 1, an operating cabin 2, a driving unit 3, etc. is attached to a crawler type traveling device 6 having a dozer device 5, and a backhoe work vehicle is also capable of soil removal work. has been configured.

As shown in FIG. 1, the lower part of the operating cabin 2 is installed on the revolving frame 4a forming the peripheral part of the revolving base 4 via packing rubber 7, and the floor pedestal 8 and the floor 9 are jointly connected with bolts 10. It is tightened and removably attached to enable maintenance and inspection of hydraulic system operating valves and piping for the backhoe device and crawler type traveling device disposed within the revolving frame 4a.

As shown in FIG. 2, the floor pedestal 8 consists of an angle member 8a and a cylindrical body 8b for inserting bolts, and a sound absorbing material 11 is attached to the surface of the angle member 8a facing the operating cabin 2 by pasting or the like. As shown in FIG. 1, with the floor pedestal 8 and the floor 9 attached to the revolving frame 4a, in the gap between the floor pedestal 8 and the lower part of the front wall and both side walls of the operating cabin 2, The entire area is filled with a sound absorbing material 11, and a sound absorbing material 12 is attached to the lower surface of the floor 9 almost over the entire surface by pasting or the like, thereby preventing noise propagation from below the floor 9 into the operating cabin 2. It is designed to suppress.

[Another example]

Next, another example will be described.

The material, mounting configuration, filling range, etc. of the sound absorbing materials 11 and 12 can be appropriately selected depending on the situation.

The structure and mounting configuration of the floor 9 and the floor pedestal 8 can be changed as appropriate. For example, the floor 9 may be configured to be detachable while the floor pedestal 8 is fixed.

The model of the backhoe work vehicle, the structure of the driving cabin 2, and other specific configurations of the backhoe work vehicle can be changed as appropriate.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a sectional view of the main parts, FIG. 2 being a perspective view of a floor pedestal, and FIG. 3 being an overall side view of a working vehicle. 2...Driving cabin, 8...Floor cradle, 9...
...Floor, 11...Sound absorbing material.

Claims (1)

[Scope of utility model registration request] In a backhoe work vehicle in which a floor pedestal 8 is arranged near the inside of the driving cabin 2 and a floor 9 is detachably attached to the floor pedestal 8, the lower part of the driving cabin 2 and the floor pedestal 8 are connected. A driving section of a backhoe work vehicle in which a sound absorbing material 11 is filled in between.