KR200153898Y1 - A buffer device of impact motion tool - Google Patents

Abstract

The present invention relates to a shock absorber of the impact motion tool for crushing rocks, concrete structures, etc., and improves the coupling force between the shock absorber and the impact motion tool, and also improves the durability of the shock absorber according to the continuous reciprocating motion of the impact motion tool. The object of the present invention is to couple to the groove portion 3 of the impact motion tool 1, and the protrusion 4-2 extending outward in the state coupled to the groove portion 3 is formed for this purpose. An inner clamp 4; A shock absorbing member 5 in which grooves 5-1 corresponding to the projections 4-2 of the inner clamp are formed; On one side of the plate-shaped body portion, two extension portions 6-2 formed vertically spaced apart from each other are provided, so that the projections 5 of the shock absorbing member 5 between the extension portions 6-2. -2) to provide a shock absorbing device of the impact movement tool, characterized in that it comprises an outer clamp 6 formed to be fitted.

Description

Shock Absorber Of Impact Movement Tool

The present invention relates to an impact motion tool such as an excavator or a power shovel, and more particularly, the radial vibration applied to the impact motion tool when the impact rod provided at the front end of the impact motion tool transmits strong impact energy to the crushed object. A shock absorber of an impact motion tool for reducing noise.

In general, the crushing and dismantling of hard rock or concrete structure is frequently performed in the quarrying site, civil construction site, etc. For this operation, for example, the excavator 15 as shown in FIG. Is being used. An arm 14 made of multiple joints is provided in front of the excavator 15, and an impact motion tool 1 operated by hydraulic or pneumatic pressure is installed at the tip of the arm 14.

2 shows an assembly form of such a conventional impact motion tool.

As shown, a pair of flat support brackets 63 for supporting the impact motion tool 1 are provided on both sides of the impact motion tool 1, and a pair of metal fixing plates 65 are provided for the impact motion tool 1. It is interposed between (1) and the support bracket 63. An outwardly extending protrusion 61 is formed on one side of each metal fixing plate 65, and the impact movement tool 1 in which the groove 62 into which the protrusion of the metal fixing plate 65 is inserted and mounted corresponds to the protrusion 61. It is formed in the side part of). In addition, a plurality of through holes are provided correspondingly to the metal fixing plate 65 and the support bracket 63 of the impact movement tool 1, and each of the fastening bolts 64 are coupled through these through holes to impact the movement. The tool 1 and the metal fixing plate 65 and the support bracket 63 are fixed to each other.

On the other hand, the impact rod 66 that directly impacts the object to be broken is installed on the front of the impact movement tool 1, the impact rod 66 receives the force of the piston to hit the rock or fractured object Crush.

At this time, the impact movement tool 1 vibrates violently up, down, left and right and back and forth by the strong repulsive force of the object and the work at the irregular position of the operator, and the vibration is transmitted to the support bracket 63 through the metal fixing plate 65. Transmitted to generate a lot of noise along with the radiation vibration to increase worker fatigue and environmental noise.

As a conventional example for solving such a problem, Japanese Patent Application Publication No. 91-4899 (a shock absorber of an impact exercise tool), filed in 1989 by Nihon Numatic Kogyo Kabushiki Kasha, was applied by a striking rod. A shock absorber of an impact motion tool is proposed, wherein a shock absorbing rubber for absorbing the shock transmitted to the support bracket is interposed between both sides of the impact motion tool and each support bracket.

In the above-mentioned shock absorber, each support bracket is provided on both side portions of the impact movement tool, and the front and rear restraint members arranged on the front and rear surfaces of the impact movement tool are provided between both brackets. In addition, the bracket is provided with an installation hole facing the concave grooves formed on both sides of the impact movement tool, and a shock absorbing shock absorbing rubber is provided between the bracket and the impact movement tool. One side of the cushioning rubber is fitted with a fitting plate corresponding to the concave groove of the impact motion tool, and the other side has a mounting plate larger than the mounting hole of the bracket, and one side of the cushioning rubber through the mounting hole of the bracket. The fitting plate is attached to the concave groove at the same time the mounting plate is made of a structure that is fixed to the outer surface of the bracket.

However, in the shock absorber of such a conventional impact motion tool, since the rubber is simply fixed by pressing the metal plates on both sides, the force applied to the fixed rubber when the pressing force is small or there is a small crack, that is, the impact of the piston The impacting tool reciprocates in the axial direction by the rod striking, causing repeated longitudinal shear forces on the cushioning rubber, resulting in reduced durability, causing the fit plate attached to one side of the cushioning rubber or the mounting plate on the opposite side to be stuck. Problems with separating

Therefore, the present invention has been devised to solve such a conventional problem, and improves the structure of the shock absorber for the impact motion tool, thereby improving the coupling force between the shock absorber and the impact motion tool, and also the continuous reciprocating motion of the impact motion tool. The purpose is to improve the durability of the shock absorber according to the invention.

1 is a state of use of a general impact motion tool.

2 is a state in which a conventional impact motion tool is mounted on a support bracket.

Figure 3 is an exploded view of the shock absorber for the impact motion tool according to the present invention.

4A and 4B are combined cross sectional and front views of the shock absorber for the impact motion tool shown in FIG.

5a and 5b is a front view and a side view of the shock absorber for the impact motion tool according to the present invention.

6 is a perspective view showing another embodiment of a shock absorber for an impact motion tool according to the present invention.

7A and 7B are combined cross sectional and front views of the shock absorber for the impact motion tool shown in FIG.

8 is a perspective view showing another embodiment of the shock absorber for impact motion tools according to the present invention.

* Explanation of symbols for main parts of the drawings

1: impact movement tool 2: support bracket

3: insertion groove 4: internal clamp

5: shock absorbing member 6: outer clamp

7: bolt hole 8: fixing bolt

9: support rod 10: bolt hole of inner clamp

11 back shock absorbing member 12 front shock absorbing member

13: front fixing plate 14: excavator arm

15: Excavator 66: hitting rod

In order to achieve the above object, in the present invention, a pair of flat support brackets having grooves formed on both side portions of the impact movement tool, and mounting holes arranged on both side portions of the impact movement tool and corresponding to the groove portions. And a shock absorbing member arranged between the impact motion tool and the support bracket to absorb the shock transmitted to the support bracket, the shock absorber of the impact motion tool coupled to the groove of the impact motion tool, An inner clamp having protrusions extending outwardly in a coupled state; A shock absorbing member having grooves corresponding to the protrusions of the inner clamps; Two extensions are provided vertically spaced apart from each other on one side of the plate-shaped body portion, the outer clamp including an outer clamp formed to fit the projection of the shock absorbing member between the extensions, the inner clamp is impact It is press-fitted into the groove of the movement tool, the groove of the shock absorbing member and the projection of the inner clamp are engaged with each other by fitting, and the outer clamp is inserted through the mounting hole of the support bracket, and then formed on the outer clamp. The protrusion of the shock absorbing member is fitted to the inner side of the extension, and the outer side is fixed to the hole of the outer clamp machined corresponding to the bolt hole formed in the body portion of the support bracket in close contact with the mounting hole of the support bracket. There is provided a shock absorber of the impact movement tool, characterized in that the bolt is fastened.

In addition, it is preferable that the inner clamp and the shock absorbing member are formed with integrally formed through holes, and support bars protrude from the outer clamps in correspondence with the through holes to be inserted and inserted through the through holes.

The inner and outer clamps are made of metal, and the shock absorbing member, which is a viscoelastic material, is preferably formed of cured resin, cured nylon, natural rubber, or urethane.

In addition, the shock absorbing member is preferably provided with a flange portion in contact with the side portion of the impact motion tool.

It is also preferred that a gap is provided between the outer side of the impact movement tool and the inner side of the support bracket.

In addition, the projecting surface of the shock absorbing member is preferably treated with a curved surface.

In addition, the front and rear of the impact movement tool is mounted with a rear fixing plate and a front fixing plate for preventing the front and rear movement of the impact movement tool, and the rear shock absorbing member and the front shock absorbing member between the rear fixing plate and the front fixing plate and the impact movement tool. It is preferable that each is inserted.

In addition, the protrusion of the inner clamp and the groove of the shock absorbing member are preferably cross-shaped.

Moreover, it is preferable that the length L of an internal clamp is formed longer than the installation hole of a support bracket.

EXAMPLE

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention, the same reference numerals are assigned to the same parts as those cited in the prior art in the present embodiment, to avoid duplication of description again Do not explain.

First, the shock absorber of the impact motion tool according to the present invention is designed using the principle of the key, but sandwiching the cushioning rubber between each support bracket of the impact motion tool, a pair of fixing clamps and viscoelastic material The shock absorbing member is mounted to the concave grooves on both sides of the impact motion tool, which will be described in detail with reference to the accompanying drawings.

The vibration generated by the impact in the X direction, the Y direction, and the Z direction at the time of the impact of the impact motion tool 1 is transmitted to the support bracket 2, and accordingly, the shock absorber for the impact motion tool according to the present invention, As shown in FIG. 3, the inner clamp 4 is impacted with the shock absorbing member 5 inserted between the inner and outer clamps 4 and 6 to prevent the anti-bronchoscopy transmitted from each support bracket. It is intended to reduce vibration and noise by tightly pressing the insertion recess 3 of the tool 1.

According to the present invention, the inner clamp 4 is formed of iron, and the through holes 4-3 in the longitudinal direction are formed at both side ends. In addition, the shock absorbing member 5 coupled to the inner clamp 4 has a recess 5-1 corresponding to the protrusion 4-2 of the inner clamp 4 at the rear portion thereof, and the recess 5-1. The through holes 5-3 extending to the protrusions 5-2 are formed at positions corresponding to the through holes 4-3 of the inner clamp 4 at both sides of the inner side. The outer clamp 6 is provided with two extension portions 6-2 vertically spaced apart from one another on one surface of the body portion of the flat plate shape, so that the shock absorbing member 5 is disposed between the extension portions 6-2. Protrusions 5-2 of) are to be fitted.

According to this configuration, the inner clamp 4 is press-fitted into the insertion recess 3 of the impact motion tool 1, as shown in FIG. 4A, so that the inner clamp surface 4-1 and the insertion recess 3 are provided. The inner surface of the contact surface is in close contact with each other, and the grooves 5-1 of the shock absorbing member 5 made of a viscoelastic material and the protrusions 4-2 of the inner clamp 4 are fitted together. In addition, in order to prevent the shock absorbing member 5 from being detached, the external clamp 6 is inserted and coupled through the mounting hole 2-1 of the support bracket 2 from the outside, and at this time, the external clamp 6 The projection 5-2 of the shock absorbing member 5 is fitted to the inner surface of the extension part 6-2 formed on the inner side, and the outer surface is an installation hole 2-1 of the support bracket 2. Inserted into the joint. Thereafter, the fixing bolt 8 is inserted into the hole 10 of the outer clamp 6 drilled corresponding to the bolt hole 7 formed in the body portion of the support bracket 2, as shown in FIG. 4B. By fastening to the bolt hole 7, the shock absorber of the impact motion tool is assembled.

On the other hand, in the outer clamp 6, two support bars 9 are provided with grooves 6- 6 corresponding to the through holes 4-3 and 5-3 formed integrally with the inner clamp 4 and the shock absorbing member 5, respectively. It protrudes from the inner side of 1), and is formed. Thus, when the outer clamp 6 is engaged, the support rod 9 is inserted and engaged through the respective through holes 4-3 and 5-3, so that the inner clamp 4, the shock absorbing member 5 and the outer clamp are engaged. It will improve the bonding force between (6).

In addition, the inner and outer clamps 4 and 6 are formed of a metal, and the shock absorbing member, which is a viscoelastic material, is formed of a material such as cured resin, cured nylon or natural rubber, urethane, etc., thereby preventing separation and impact movement from the inner clamp 4. The reaction force against the shear force generated during the up and down vibration of the tool 1 is increased.

In addition, the shock absorbing member 5 is provided with a projection or a flange portion 5-4, which is X-axis to the support bracket 2 in accordance with the up and down movement of the impact movement tool 1 in the state that the shock absorber is inserted. When a force in the direction is generated, it is for preventing the shock absorbing member 5 from being detached due to the opening of the support bracket 2.

Furthermore, according to the present invention, a clearance T is provided between the outer side surface of the impact movement tool 1 and the inner side surface of the support bracket 2, whereby the inner clamp 4 and the shock absorber are provided. At the time of assembling the members 5, the respective members can be tilted at an angle to be assembled.

In addition, a compressive force is applied to the shock absorbing member 5 by vertical movement of the impact motion tool 1, and heat generated by friction of internal molecules is generated when deformation of the shock absorbing member 5 is suppressed according to the compressive force. Since the life may be shortened due to deterioration, the protruding surface of the shock absorbing member 5 is curved to secure the deformation space 6-4 so that the compression and expansion of the shock absorbing member 5 can be freed. Is formed.

Next, FIGS. 5A and 5B are front and side views of the shock absorber for the impact motion tool according to the present invention, and as shown, before and after the impact motion tool 1, The rear fixing plate 11-1 and the front fixing plate 13 to prevent the front and rear movement and the rear fixing plate 11-1 and the front fixing plate 13 to prevent the front and rear movement of the impact movement tool are mounted. The rear impact tool member 11 and the front impact absorbing member 12 are respectively inserted between the 11-1 and the front fixing plate 13 and the impact motion tool 1 to be transferred to the support bracket 2. Vibration is attenuated. In addition, the rear fixing plate 11-1 is fixed to the support bracket 2 by welding, and the front fixing plate 13 is fixed to the supporting bracket 2 using the fixing bolt 13-1.

6 and 7a and 7b show another embodiment of the shock absorber, wherein an inner clamp 4, a shock absorbing member 5 and an outer clamp 5 of a similar type as in the above-described embodiment are used. In this embodiment, manufacturing convenience is achieved by removing the supporting rods for fixing the inner clamp 4, the shock absorbing member 5, and the outer clamp 5 to each other.

8 is an exploded perspective view showing yet another embodiment of the shock absorber, wherein the inner clamp 4 is formed with a cross-shaped protrusion 16, and thus the groove 17 of the shock absorbing member 5 is cross-shaped to form an impact. The separation between the absorbing member 5 and the inner clamp 4 is prevented.

Further, according to the present invention, as shown in Figs. 6 and 8, the length L of the inner clamp 4 is longer than the installation hole 2-1, so that the insertion groove of the impact movement tool 1 By increasing the contact area with 3), the separation between the inner clamp 4 and the impact motion tool 1 is prevented and the strength of the inner clamp 4 is increased.

As described above, according to the shock absorber of the impact motion tool according to the present invention, the shock absorber is a cushioning rubber is pressed between the support bracket and the impact motion tool by engaging each member using the principle of the key Compared with the existing shock absorber, the bonding force is improved, and if necessary, the disassembly and coupling is possible in a simple manner, and the replacement of parts is free.

In addition, since the protrusions of the uneven shape are provided on the inner clamp 4 and the outer clamp 6 to increase the contact area, the force against the Y-direction load or the repulsive force of the impact movement tool 1 is uniformly distributed, thereby providing a shock absorbing member. There is an effect of reducing the vibration transmitted to the life extension and the support bracket (2) of (5).

Moreover, the extension part 6-2 of the outer clamp 6 is fitted to the outer peripheral surface 2-2 of the mounting hole of the support bracket 2, and the vertical movement of the Y-axis direction is prevented, and the support bracket ( 2) the separation with the external clamp 6 is prevented.

On the other hand, the present invention is not limited to the specific preferred embodiment described above, anyone of ordinary skill in the field to which the subject innovation belongs without departing from the gist of the subject innovation claimed in the utility model registration claims Modifications may be made.

Claims (7)

Insertion recesses 3 formed at both side ends of the impact motion tool 1; Arranged on both side portions of the impact movement tool 1, the mounting hole 2-1 corresponding to the insertion recess 3 and the mounting hole 2-1 are spaced apart from each other at predetermined intervals. A pair of plate support brackets 2 having a plurality of bolt holes 7 installed therein; Shock absorbing device of the impact movement tool (1) comprising a shock absorbing member (5) arranged between the impact movement tool (1) and the support bracket (2) to absorb the shock transmitted to the support bracket (2). As the clamp surface (4-1) facing the insertion groove (3) of the impact movement tool (1), and the projection (4-2) extending outward in the state coupled to the insertion groove (3), An internal clamp (4) having a through hole (4-3) formed on an outer surface of the protrusion (4-2) and coupled to an insertion recess (3) of the impact exercise tool (1); Two extension portions 6-2 vertically spaced apart from each other on one side of the flat body portion, a recess 6-1 formed between the two extension portions 6-2, A support rod 9 formed to be spaced apart from each other at predetermined intervals between the two extension portions 6-2, and an outer clamp 6 having a plurality of life preservers 10 spaced apart from each other at predetermined intervals The shock absorbing member 5 includes a recess 5-1 fitted to the protrusion 4-2 of the inner clamp 4 at a central portion thereof, and a protrusion formed at an outer circumference of the recess 5-1. 5-2, a through hole 5-3 formed radially in the projection 5-2, and a flange portion 5-4 extending in the circumferential direction from the projection 5-2. In addition, the inner surface of the extension portion 6-2 of the outer clamp 6 is fitted to the projection 6-2 of the shock absorbing member 5, and of the outer clamp 6The outer surface of the extension part 6-2 is closely coupled to the mounting hole 2-1 of the support bracket 2, and the protrusion 5-2 of the shock absorbing member 5 is connected to the outer clamp ( 6 is coupled to the recess 6-1, and the supporting rod 9 of the outer clamp 6 is a through hole 5-3 of the shock absorbing member 5 and a penetration of the inner clamp 4, respectively. It is inserted into the hole (4-3), characterized in that the fixing bolt (8) is fastened to the bolt hole (7) of the support bracket (2) through the hole (10) of the outer clamp (6). Shock absorber of impact tool. The impact motion according to claim 1, wherein the inner and outer clamps (4, 6) are made of metal, and the shock absorbing member (5), which is a viscoelastic material, is formed of cured resin, cured nylon, natural rubber or urethane. Shock absorber of the tool. The shock absorber according to claim 1, wherein a gap (T) is provided between the outer surface of the impact movement tool (1) and the inner surface of the support bracket (2). The shock absorber according to claim 1, wherein the projecting surface of the shock absorbing member is treated with a curved surface. 5. The rear fixing plate 11-1 and the front fixing plate 13 are mounted on the front and rear sides of the impact movement tool 1 to prevent the front and rear movement of the impact movement tool 1. The rear shock absorbing member 11 and the front shock absorbing member 12 are inserted between the 11-1 and the front fixing plate 13 and the impact motion tool 1, respectively. shock. The shock absorber according to claim 1, characterized in that the projection (16) of the inner clamp (4) and the groove (17) of the shock absorbing member (5) are formed crosswise. The shock absorber according to claim 1, wherein the length (L) of the inner clamp (4) is formed longer than the installation hole (2-1) of the support bracket (2).