KR100885538B1 - Damping unit - Google Patents

Abstract

The vibration isolator according to the present invention is installed between the first and second support plates and the first and second support plates, elastic bodies having elasticity, and installed between the elastic bodies, interconnecting the elastic bodies, and elastic bodies. It is provided with a dustproof portion having a blocking member for shorting the continuous vibration through the first support plate is provided at the end of the dustproof portion.

Vibration nippers, dustproof part, blocking member, vibration damping

Description

Dustproof unit

The present invention relates to a vibration isolator, and more particularly to a damping device with improved vibration damping force and structural strength.

In general, in various construction machinery, industrial machinery, etc., most of the mechanical apparatus having a driving unit is accompanied by vibration. Such vibrations reduce the operability and stability due to driving, and damage the mechanical device, and thus the regulation according to the vibrations is intensified.

In order to solve this vibration, a vibration reducer may be installed. The vibration reducer is a method of reducing vibration by attaching a small mass-spring-damper system to a large vibrating body that vibrates a mechanical structure at a constant frequency. to be.

The principle of the vibration reducer is to reduce the vibration of the vibrating body by applying the vibration to the natural frequency of the vibrating vibrating body. Vibration reducers are effectively used for machines and structures with small vibrations and resonant vibrations. However, heavy-duty devices that need to attenuate vibrations under relatively large loads (pressure), that is, vibration dampers used for excavator nippers, are spring or elastic. It is made of a rubber material, in this case there is a problem that is broken or relatively reduced damping effect.

Korean Patent Publication No. 2005-0106231 discloses a dustproof device for heavy equipment, and Utility Model Registration 20-0012050 has a cap with a pressure plate installed inside the elastic body, and a bolt with a space adjusting bolt of the elastic body. A space is formed between the bottom face and the platen, and an annular request is formed on the outer periphery of the cap. Utility Model Registration No. 20-0427717 discloses a dustproof device.

On the other hand, a vibration isolator for improving the vibration isolator is formed in the whole rubber is disclosed in Japanese Unexamined Utility Model Publication No. 58-155445, Japanese Patent Application Laid-open No. Hei 4-119238 has disclosed a rubber dustproof device The dustproof device of the rubber material has a structure in which the metal fittings are wrapped around the entire upper surface of the body, and a plurality of ring-shaped protrusions of a certain size protrude from the bottom thereof, and a large and small cylinder is formed on the upper surface of the rubber body in contact with the metal fittings. A projecting structure is disclosed.

However, such a dustproof device is to be used by mounting the leg portion of the device can not be firmly fixed, there is a problem that the metal fittings are deformed or ruptured in the event of a rather strong impact or tremor, the relatively large load It cannot be used as a dustproof device for heavy equipment.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a dustproof apparatus that can prevent resonance from a vibration generating source and thus increase dustproof efficiency.

Another object of the present invention is to provide a vibration nipper using a vibration isolator that can prevent the vibration generated from the vibration generating means for vibrating the nipper blade to be transmitted to the boom or the vehicle body.

The anti-vibration device of the present invention for achieving the above object is to be installed on the first support plate, the first support plate, elastic bodies having elasticity, and installed between the elastic bodies to interconnect the elastic bodies, It characterized in that it is provided with a dustproof part having a blocking member for shorting the continuous vibration through, and a first support plate provided at the end of the dustproof part.

In the present invention, the elastic member is made of a rubber material, the surface of the blocking member is formed with an uneven portion for increasing the bonding force with the rubber material.

Alternatively, the vibration nipper for achieving the above object

A main body having a vibration space part and having a coupling part for coupling with a boom or a fixed bracket of heavy equipment on the upper side, a vibration unit located in the vibration space part of the main body, and having a vibrator installed, both sides of the vibration unit and a corresponding body A plurality of vibration isolators and supporting means which are supported on the main body so as to vibrately support the vibration unit, the nipper blades installed on the vibration unit and extending downward, and installed on the upper main body of the vibration space part to raise the housing. It includes a shock absorbing and dustproof device for dispersing the vibration in the collision with the main body,

The anti-vibration means is installed between the first and second support plates and the first and second support plates, elastic bodies having elasticity, and installed between the elastic bodies, interconnecting the elastic bodies, and being continuous through an elastic body. It is characterized in that it is provided with a blocking member for shorting the vibration.

The vibration isolator of the present invention can be widely used in a mechanical device that can absorb vibration while receiving a relatively large load, such as various industrial machines, heavy equipment having a drive source, it is possible to improve the structural strength. In addition, it can increase the design freedom for the absorption of vibration when applied to machinery.

And by installing the prevention device on the arm of the heavy equipment, that is, excavators, payloaders, such as booms or browsers it is possible to minimize the transmission of vibration generated from the nippers to the boom or the arm.

 The vibration isolator according to the present invention is installed on an arm or a boom such as an excavator, a bulldozer and a payloader used for industrial machinery, heavy equipment, particularly civil engineering and building construction, to excavate or crush concrete, asphalt, and soft ground. One embodiment is shown in Figures 1 to 2 to be installed in the nipper.

Referring to the drawings, the vibration isolator 100 is the first and second support plates 101 and 102 spaced apart from each other by a predetermined interval, and both ends are provided on the first and second support plates 101, the first and second support The dustproof part 110 located between the plates 101 and 102 is provided.

The first and second support plates 101 and 102 are for mounting on a mechanical device for absorbing vibration, and have separate fixing means for fixing. This fastening means may consist of a bolt and a nut.

The dustproof part 110 is for absorbing vibration transmitted through at least one side of the first and second support plates 101 and 102 and elastic bodies 111 having elasticity and the elastic bodies 111. It is provided between the connecting member and the blocking member 112 for shorting the continuous vibration through the elastic body. The blocking member 112 may be made of metal or synthetic resin. Concave and convex portions (not shown) may be formed at the junction between the blocking member 112 and the elastic bodies 111 to increase the coupling force thereof. Here, the elastic member may be made of a rubber material, the blocking member 112 may be adjusted in number depending on the vibration absorption force. As the number of the blocking members increases, the occupancy ratio of the blocking part increases with respect to the length of the dustproof part 110, so that the dustproofing efficiency is relatively lowered, and the number of the blocking members is reduced to reduce the number of the blocking members. It is possible to increase the dustproof efficiency by increasing the occupancy of the elastic body. That is, increasing the hardness of the rubber is difficult to expect the anti-vibration effect due to the loss of elasticity, and when the hardness is lowered, the elasticity is increased, and stable dustproofing of the device supported thereto is difficult.

On the other hand, Figure 2 shows an embodiment of the vibration nipper 10 is installed such a vibration isolator 100.

Referring to the drawings, the vibration nipper 10 has a vibration space portion 11 and the main body 13 having a coupling portion 12 for engaging with the arm of the boom (not shown) or heavy equipment on the upper side, and the vibration Vibration unit 20 positioned in the space and provided with a vibrator (30), and both sides of the housing 21 of the vibration unit 20 and the body 13 corresponding thereto, the vibration unit 20 with respect to the body 13 ) Is provided with a plurality of vibration isolators 100 for supporting the vibration. In addition, the nipper braid 200 is installed in the housing 21 and extends downward, and the upper side main body 13 of the vibration space 11 is installed to raise the vibration unit 20 so that the housing 21 and the main body ( When the bending moment and the rotation moment are applied to the shock absorbing and dustproof device 70 for dispersing the vibration in the collision of 13) and the housing 21 for supporting the nipper braid 200 vibrating with respect to the main body 13. It comprises a support means (50) consisting of a plurality of rollers or journal bearings for supporting the housing (21) relative to the body (13).

The vibration nipper 10 according to the present invention configured as described above will be described in more detail for each component as follows.

The coupling part 12 formed on the upper portion of the main body 13 of the vibrating nipper 10 is for fixing to a boom or an arm of heavy equipment, and a plurality of coupling holes 12a are formed for pin coupling with the boom. And vibrating space portion formed in the main body 12

11 is formed by extending the first and second support portions 14 and 15 from both sides of the base portion 13a on which the coupling portion 12 is installed, and the lower side of the nipper blade 200 to be pulled out downward. Is opened to help. The front and rear sides formed by the first and second support parts 14 and 15 are not shown in the drawing, but support frames are formed to support the front and rear parts of the vibration space part 11. This is preferred. The main body 13 is not limited to the above-described embodiment and may be any structure as long as the vibration unit 20 provided with the nipper blade 200 can vibrate smoothly.

The vibration isolator 100 suspends the vibration unit 20 in the vibration space portion 11 of the main body 13, and the housing 21 of the vibration unit 20 corresponding to the first support part 14 of the main body 13. It is installed between one side of the) and the other side of the housing 21 corresponding to the second support (15). The first support plate 101 and the first support plate 101 and the second support part 15 and the other side surfaces of the housing are respectively provided on both sides of the dustproof part 110 of the dustproof device 100. Two support plates 102 are installed. The dustproof part 110 has the same structure as described above.

The shock absorbing dustproof device 70 is for absorbing a shock when colliding with the housing due to the rise of the housing 21 due to vibration, and may be formed in the same configuration as that of the dustproof device.

The vibration unit 20 is suspended in the main body 13 to vibrate, the vibrator 30 is installed in the housing 21, the nipper blade 200 is installed in the housing 21 and protrudes below the vibration space portion It is provided.

Although not shown in detail in the drawing, the vibrator 30 includes a pair of rotation shafts installed in the housing, drive gears installed on the respective rotation shafts and engaged with each other, and an eccentric weight member respectively installed on the rotation shafts. Can be.

Referring to the operation of the vibration isolator according to the present invention configured as described above and the operation of the vibration nipper using the same as follows.

       In the vibration isolator according to the present invention, when vibration is transmitted to at least one side of the first and second support plates 101 and 102, the vibration is absorbed by the elastic body 111, which is installed between the elastic bodies 111. Since the effect of increasing the hardness can be obtained by the blocking member 112, the vibration damping effect can be enhanced. That is, when the hardness of the elastic body 111 is increased, it is difficult to expect the effect of the anti-vibration rubber due to the loss of elasticity, and when the elasticity is lowered, the pressure displacement is increased. .

Vibration nipper (10) equipped with such a dustproof device to minimize the noise during the work by crushing and excavating the concrete, asphalt, soft rock and wind rock with higher strength than the general soil in civil engineering, building construction site, demolition site, etc. The vibration can be prevented from being transmitted to the boom or the arm. That is, vibration is generated by the driving of the vibrator 30 in a state in which the vibration nipper 10 according to the present invention is mounted on the boom of the excavator. In this process, the housing 21 of the vibration unit 20 is suspended by the vibration isolator 100 so that the vibration is not affected by the vibration in the vertical direction. The vibration isolator 100 blocks the elastic body 111. The members 112 are alternately installed to induce stable vibrations.

In particular, when the housing 21 of the vibration unit 20 oscillating in the vertical direction is raised and collides with the main body 13, the impact force due to the impact is dispersed by the shock absorbing dustproof means 70, so the vibration is the main body 13 It can be prevented from being transmitted directly to the boom connected to the boom. The dustproof member 70 is provided with inclined portions 71 and 72 at both corners of the housing 21, and is dustproof at the corners of the upper main body 13 of the vibration space 11 of the main body corresponding thereto. Since the members 73 and 74 are provided, the inclined portions 71 and 72 of the rising housing 21 collide with the dustproof members 73 and 74 so that the impact force is dispersed.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The vibration isolator of the present invention can be widely used in industrial machinery or heavy equipment having a driving unit, and in particular, the vibration nipper using the vibration isolator can prevent the vibration from being transmitted to the boom or the arm during excavation or demolition by the nipper blade. Therefore, it can be widely used in heavy equipment for civil engineering and construction.

1 is a partial ablation perspective view of the dustproof device according to the present invention;

Figure 2 is an exploded perspective view showing a vibration nipper equipped with a vibration isolator according to the present invention.

Claims (2)

delete A main body having a vibration space part and having a coupling part for coupling with a boom or a fixed bracket of heavy equipment on the upper side, a vibration unit located in the vibration space part of the main body, and having a vibrator installed, both sides of the vibration unit and a corresponding body A plurality of vibration isolators and supporting means which are supported on the main body so as to vibrately support the vibration unit, the nipper blades installed on the vibration unit and extending downward, and installed on the upper main body of the vibration space part to raise the housing. It includes a shock-absorbing dustproof device for dispersing the vibration in the collision with the main body, The vibration isolator is installed between the first and second support plates and the first and second support plates, elastic bodies having elasticity, and installed between the elastic bodies to interconnect the elastic bodies and are continuously connected to each other. Vibration nippers characterized in that it is provided with a blocking member for shorting the vibration.

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