JP2541752Y2 - Driver's soundproofing equipment for construction machinery - Google Patents

Description

TECHNICAL FIELD The present invention relates to a soundproof device for a cab for a construction machine.

2. Description of the Related Art FIG. 5 is a side view of a general hydraulic excavator, where 1 is a lower traveling body, 2 is an upper swing body, and 3 is a cab. FIG. 6 is a plan view of the upper swing body 2 of FIG.
, An engine, 5 a cooling fan, 6 a radiator, 7 a hydraulic pump, and 8 a control valve for controlling various hydraulic actuators. FIG. 7 is a cutaway side view of a part of the driver's cab 3 and the upper revolving superstructure 2 of the prior art, 9 is a floor plate of the driver's cab 3, and 10 and 11 are through holes (other through holes are also present). (Not shown), 12 and 13 are hose protection ring members attached to the through holes 10 and 11 inside diameter, 12 is a driver's seat, 13 is an operation lever, and 14 is a hydraulic piping hose mainly for an operation system. . FIG. 8 is a perspective view showing the main frame 15 of the upper swing body 2, and 11 is a through hole 11 in FIG.

Next, the prior art cab 3 will be described. The entire outer periphery is formed in a box shape by a plate member, a through hole is formed in the plate member, and a hose for hydraulic piping or a wire for a harness is inserted into the through hole using the ring member. Like that.

Further, as an embodiment of the prior art, there is a shielding plate shown in FIG. 1 of Japanese Utility Model Application No. 57-86159 (Japanese Utility Model Application Publication No. Sho 58-189265) and described in the specification. The soundproof shielding plate is formed between an upper plate or a lower plate and a lever, and is made of an elastic material such as rubber so that the lever penetrates and covers a swinging hole. Shield plate, upper plate, lower plate,
The soundproofing effect and the dustproofing effect were still insufficient in terms of the sealing property between the lever rod portions and the degree of freedom.

Problems to be Solved by the Invention When a construction machine runs or performs work, various noises including an engine are generated. The entire outer periphery of the cab is surrounded by a plate member to block engine noise and the like. However, at least the above-described through hole is formed in the plate member of the operator cab, and a hose for hydraulic piping, an electric wire for harness, and the like are passed through the through hole. Through the driver's cab. As a result, the driver in the driver's cab tends to be uncomfortable by the noise and not be able to hear other necessary voices or the like, and dust tends to enter the gap.

In view of the above, an object of the present invention is to provide a soundproofing device that reduces the noise of an engine or the like from entering a cab, and at the same time, to obtain a dustproofing effect and to provide a device with a high degree of freedom for movement. And

Means for solving the problem a. A tightly bundled pipe in which the entire outer periphery is surrounded by a plate member, a through hole is formed in the plate member, and a plurality of hydraulic piping hoses or harness electric wires are tightly bundled with the through hole. In the operator's cab with the structure One end of the hollow cylindrical partition wall boot member made of a flexible material is formed into a flange shape so as to be in close contact with one side of the through hole of the plate member, and the bolt and the nut are inserted through the tight bundle tube. A free end is formed by means of a member or the like, and the other end is formed to have a small inner diameter and a free end which elastically holds the close-fitting bundle tube to form a close contact, and is extendable and contractable. During operation of construction equipment, noise that enters the cab from outside and propagates is cut off.

Action b. Bolt the flange into the through hole of the cab plate member,
The bulkhead boot member attached by means such as a nut is made of a material having flexibility, such as rubber, so that the operation of the operating lever causes the hydraulic piping hose or the like to move in either the axial direction or the perpendicular direction. Occurs, the degree of freedom on the free end side of the partition boot member increases, and this can be adequately dealt with.

B. One side of the bulkhead boot member is tightly fixed to the through hole of the plate member in the cab with a bolt, a nut member, or the like, and the other side is hermetically inserted through the small diameter portion of the bulkhead boot member. Since the tight bundle tube is supported by the plate member via the partition boot member, it is possible to block noise and dust that enters and propagates from outside into the cab during operation of the construction machine.

Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional side view of a main part of a cab 16 provided with a soundproofing device according to the present invention. In the figure, the same components as those of the conventional technology are denoted by the same reference numerals. 17 is the cab 16
Is a floor plate among the plate members surrounding the entire outer periphery of.
FIG. 2 is a detailed view of a portion A of FIG. 1, wherein reference numeral 18 denotes a through hole of a floor plate 17, reference numeral 19 denotes a partition wall boot member, and reference numeral 20 denotes a bolt / nut member. FIG. 3 is a view as viewed from B in FIG.

Next, the configuration of the soundproofing device of the present invention will be described with reference to FIGS. This embodiment shows a case in which a plurality of hydraulic piping hoses 14 are applied to a case in which a tightly bundled tube bundled together is passed through, and these are used as hollow cylindrical partition wall boot members.
One side (a) of the flange shape of 19 is tightly fixed to the through hole 18 of the floor plate 17 with bolts and nut members 20, and the other side (b) having a small diameter and having a drawing force inward is a partition boot member. 19
To the hose 14 that is inserted through
Further, the one side and the other side (b) of the bulkhead boot 19 are integrally connected by a hollow flexible material, and the above-mentioned parts (a) and (b) formed at predetermined intervals can be freely formed. The structure can be changed three-dimensionally within a certain range.

Next, the function of the soundproofing device according to the present invention will be described. Partition wall boot member attached to through hole 18 of floor panel 17
19 is made of a material such as a rubber material having flexibility.
Even if some three-dimensional movement occurs in the material, its constituent materials, (a)
(B) By providing a predetermined interval between the parts and the effect of the close contact fixing method, it is possible to sufficiently cope with the effects. Then, one side (a) of the partition wall boot member 19 is connected to the floor
17, the other side (b) resiliently grips the hose 14 at its small diameter portion, so that noise such as encin and even dust hardly enter the inside of the cab 16 through this portion. .

FIG. 4 is a view showing a soundproofing device according to a second embodiment of the present invention, wherein reference numeral 21 denotes an operator's cab, 9 'denotes a floor plate, 22 denotes a plate member of a main frame (not shown), and 11' denotes a plate member. The provided through hole 23 is a partition boot member having the same configuration and function as the partition boot member 19 of the above embodiment. The partition boot member 23 is not provided on the plate member forming the outer periphery of the cab 21, but the main frame portion in which the lower portion of the cab 21 is partially closed, and the engine room behind it The operation function is the same as that of the partition boot member 19 in the first embodiment.

Effect of the Invention A through hole is formed in a plate member forming the outer periphery of the cab for a construction machine, and a hose for hydraulic piping,
There is a portion through which a tight bundle tube made of a harness electric wire or the like is inserted. As a result, engine noise dust and the like enter the cab through the through hole. As a result, the driver in the driver's cab not only feels discomfort due to the noise or the like but does not notice the necessary audible alarm, and may cause the instrument in the driver's cab to be stained or damaged by dust. .

On the other hand, in the cab of a construction machine in which the soundproofing device according to the present invention is implemented, the cab of the construction machine is made of a flexible material and has a hollow cylindrical shape with a flange portion formed at one end thereof. A partition boot member having a small diameter portion is provided at the other end of the hollow hole at the other end, and a tight bundle tube is inserted into the hollow hole at the other end. Since this portion is inserted, this portion is strongly held tightly by the elastic force of the partition boot member, so that noise and dust and the like can be blocked from the outside into the cab during operation of the construction machine. In addition, the close bundled pipes become 3
There is no hindrance when performing dimensional movement, and the work of inserting the tight bundle tube into the hollow hole of the bulkhead boot member is easy, the structure is simple, no manufacturing accuracy is required, and it can be manufactured in a small size. It is advantageous and economical in design and manufacturing.

[Brief description of the drawings]

1 is a partially sectional side view of a driver's cab provided with the soundproofing device according to the present invention, FIG. 2 is a detailed view of a portion A in FIG. 1, FIG. 3 is a view as viewed from B in FIG. FIG. 4 is a diagram showing a soundproofing device according to another embodiment of the present invention, FIG. 5 is a side view of a hydraulic shovel, FIG. 6 is a plan view of an upper swing body, and FIG. 7 is a cutaway side view of a prior art upper swing body. FIG. 8 is a perspective view showing the main frame. 3,16,21 ... cab 4 ... engine 9,9 ', 17 ... floor board 10,11,11', 18 ... through hole 14 ... hydraulic piping hose 19,23 ... partition boot member

Claims (1)

(57) [Scope of request for utility model registration] 1. A tightly bundled pipe formed by tightly bundling a plurality of hoses for hydraulic piping or electric wires for harnesses into a through hole formed in the plate member so as to surround the entire outer periphery with a plate member. In the operator's cab for a construction machine to be inserted, a hollow hole made of a flexible material and inserted through the close-fitting bundle tube is provided, one end of which is aligned with a through-hole formed in the plate member, such as a bolt / nut member. The cab is formed by a partition boot member having a small-diameter portion such that a free end for elastically holding the close-fitting bundle tube from the outer periphery is formed to be expandable and contractible at the other end portion. A noise proof device for a cab for a construction machine, wherein noise and dust from the outside are prevented from entering through a through hole.