KR20180061760A - Work assembly having intergrated vibration attachment and damper - Google Patents

Abstract

The present invention relates to a vibration attachment having a seat portion; A damper unit connected to the arm of the construction machine and configured to buffer vibrations generated in the vibration attachment and having a first seating projection seated on the seating portion; And a first engagement portion provided at the vibration attachment and located at a coupling position for coupling the first seating projection to the seating portion; and a second coupling portion provided at the damper unit, for preventing the first coupling portion from departing from the coupling position And a coupling unit having a second coupling portion located therein.

Description

WORK ASSEMBLY HAVING INTERGRATED VIBRATION ATTACHMENT AND DAMPER < RTI ID = 0.0 > [0001] < / RTI &

The present invention relates to a working assembly in which a vibration attachment and a damper are integrated.

Generally, construction machines, for example excavators, are widely used for road construction, waterworks and sewerage works, construction foundation works, land creation works, and earthworks picking works. The tip of the boom of the excavator is equipped with an attachment for the work required at each construction site. The attachment includes, for example, a bucket, a braker, a crusher, a ripper, and the like.

At this time, the attachment may employ a vibration device. Specifically, it refers to a vibration bucket, a vibration breaker, a vibration ripper, and the like. In the case where the attachment uses vibration, it is necessary that the vibration of the attachment is not transmitted to the body of the excavator through the arm, the boom box or the like, and furthermore, the worker in the cab, or the transmission thereof is minimized. For this purpose, a vibration isolation unit is used.

For coupling between the vibration-deadening unit and the attachment, a hydraulic cylinder or the like is used. As a result, there is a problem that the overall size of the vibration isolation unit or the like is increased and the weight is increased in order to secure a space for installation thereof.

SUMMARY OF THE INVENTION An object of the present invention is to provide a working assembly in which a vibration attachment and a damper are integrated, in which the structure for integration is simple, occupies a small space for installation, and the degree of increase in weight due to the construction is low.

In order to accomplish the above object, a working assembly incorporating a vibration attachment and a damper in accordance with aspects of the present invention includes: a vibration attachment having a seat; A damper unit connected to the arm of the construction machine and configured to buffer vibrations generated in the vibration attachment and having a first seating projection seated on the seating portion; And a first engagement portion provided at the vibration attachment and located at a coupling position for coupling the first seating projection to the seating portion; and a second coupling portion provided at the damper unit, for preventing the first coupling portion from departing from the coupling position And a second engaging portion that is positioned on the first engaging portion.

Here, the seating portion, the first seating projection, the first coupling portion, and the second coupling portion may be sequentially arranged along one direction.

Here, the first engaging portion may include a fixed cam having a portion rotatably coupled to the attaching bracket and another portion contacting the first seating protrusion.

The first engaging portion may further include a fixing pin protruding from a portion of the fixed cam and rotatably inserted into the attaching bracket.

The damper unit may further include a lower drive bracket disposed to face the attaching bracket, and the second engaging portion may include a lower drive bracket, And a fixing flange bent at the bracket and facing the first engaging portion.

The second engaging portion may further include a fixing bolt penetrating the fixing flange and fastened to the first engaging portion.

Here, the vibration attachment may further include a hook portion, and the damper unit may further include a second seating projection inserted to be hooked on the hook portion.

Here, the vibration attachment further includes an attachment bracket formed with the seating portion, and the damper unit includes: an upper connection bracket connected to the arm of the construction machine; An eccentric rotation module having a central shaft rotatably installed on the upper connection bracket, and an eccentric shaft eccentrically disposed at a center of the central shaft and coupled with the first seating protrusions; A lower drive bracket rotatably inserted into the eccentric shaft and disposed to face the upper connection bracket; And a vibration damping module connecting the upper connection bracket and the lower drive bracket to reduce relative vibration between the upper connection bracket and the lower drive bracket.

Here, the dustproof module may include: a first plate coupled to the upper connection bracket; A second plate coupled to the lower drive bracket; And an anti-vibration rubber connected to the first plate and the second plate.

Here, the attaching brackets are provided as a pair facing each other, and the lower driving brackets are provided as a pair facing each other, and may be positioned between the pair of attaching brackets.

According to the vibration assembly of the present invention and the damper according to the present invention, since the structure for integration is simple, the installation space is reduced and the degree of weight increase due to the structure is low.

1 is an assembled perspective view illustrating a vibration assembly and a damper-integrated working assembly 100 according to an embodiment of the present invention.
2 is a partially exploded perspective view of the damper unit 130 and the coupling unit 150 of FIG.
3 is a partially exploded perspective view of the rear portion of the rotation module 135 in the damper unit 130 and the coupling unit 150 of FIG.
4 is a partially exploded perspective view of the front portion of the rotation module 135 in the damper unit 130 and the coupling unit 150 of Fig. 2.
5 is a partially exploded perspective view showing the rotation module 135 completely exposed from the damper unit 130 and the coupling unit 150 of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vibration assembly and a damper according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations.

1 is an assembled perspective view illustrating a vibration assembly and a damper-integrated working assembly 100 according to an embodiment of the present invention.

Referring to the drawings, a work attachment 100 in which a vibration attachment and a damper are integrated can include a vibration attachment 110, a damper unit 130, and a coupling unit 150.

The vibration attachment 110 is a construction that is coupled to an arm of a construction machine, for example, an excavator, so that the construction machine is suitable for a construction site, and is capable of performing a work accompanied by vibration. The vibration attachment 110 may have a body 111, a vibrating body 113, and an attachment bracket 115.

The body 111 is a portion having a basic structure for the above work. In the figure, a bucket is illustrated as the body 111. [ Alternatively, the body 111 may be a ripper, a breaker, a crusher, or the like.

The vibrating body 113 is provided on the body 111 to apply vibration to the body 111. The vibrating body 113 may have a configuration such that the eccentric body is rotated while being driven by the actuator to cause vibration.

The attachment bracket 115 protrudes from the upper portion of the body 111 and is configured to engage with the damper unit 130. In this embodiment, the attachment brackets 115 protrude from the upper left and right sides of the body 111 in a pair corresponding to each other. The attachment bracket 115 may be referred to as a bucket bracket when the body 111 is a bucket.

The attachment bracket 115 may be provided with a seat portion 116 and a hook portion 117. [ The seating portion 116 receives the first seating projection 138 as a groove formed in a substantially semicircular shape in front of the upper portion of the attachment bracket 115. The hook portion 117 is a hook formed in a substantially 'C' shape on the rear side of the upper portion of the attachment bracket 115. And the second seating protrusion 138 'is fitted in the hook portion 117.

The damper unit 130 is connected to the arm of the excavator to buffer vibration generated in the vibration attachment 110. The damper unit 130 may include an upper connection bracket 131, a lower drive bracket 133, a rotation module 135, and a vibration prevention module 141.

The upper connection bracket 131 is connected to the arm of the excavator and constitutes a basic body in which the rotation module 135 and the dustproof module 141 are installed. The upper connection bracket 131 may be provided with a connection bar 132 for connection with the arm. The upper connection bracket 131 is located between the pair of attachment brackets 115 and may be provided in a pair corresponding to the pair of attachment brackets 115.

The lower drive bracket 133 is disposed between the attachment bracket 115 and the upper connection bracket 131. Specifically, the lower drive bracket 133 may also be provided as a pair corresponding to the attachment bracket 115 and the upper connection bracket 131. The lower drive bracket 133 is connected to the vibration attachment 110 by the coupling unit 150 and moves up and down relative to the upper connection bracket 131 together with the vibration attachment 110.

The rotation module 135 is rotatably installed on the upper connection bracket 131. The rotation module 135 is configured such that the vibration attachment 110 and the lower drive bracket 133 are rotated so as to vibrate up and down with respect to the upper connection bracket 131. The rotation module 135 may have a first seating projection 138 and a second seating projection 138 'that are used for coupling with the attachment bracket 115.

The vibration isolation module 141 is configured to connect the upper connection bracket 131 and the lower drive bracket 133 to reduce vibration due to their relative motion.

The coupling unit 150 is a structure that allows a simple coupling between the vibration attachment 110 and the damper unit 130. [ The coupling unit 150 may include a first coupling portion 151 and a second coupling portion 156.

The first engaging portion 151 is provided on the attaching bracket 115. The first engaging portion 151 has a structure in which the first seating projection 138 is located at the engagement position. Specifically, the first engaging portion 151 may include a fixed cam 152, a fixing pin 153, and a fixing nut 154.

The fixed cam 152 is rotatably coupled to the attachment bracket 115 at one end thereof by a fixing pin 153. The fixing nut 154 is engaged with the fixing pin 153 so that the fixing pin 153 does not come off from the attachment bracket 115. The other end of the fixed cam 152 is disposed to face the first mounting projection 138.

The second engaging portion 156 is provided on the lower driving bracket 133 to hold the first engaging portion 151 in the engaged position.

The second engaging portion 156 may have a fixing flange 157 that extends and bends in the lower driving bracket 133. The fixing flange 157 prevents the fixing cam 152 from rotating so as to be disengaged from the first mounting projection 138. [ Accordingly, the seating projections 138, the first seating projections 138, the fixed cams 152, and the fixing flanges 157 can be described as being sequentially arranged in a row along the oblique direction in the drawing.

The second engaging portion 156 may further include a fixing bolt 158 that passes through the fixing flange 157 and is fastened to the fixed cam 152.

The rotation module 135 and the dustproof module 141 of the damper unit 130 will be described in detail with reference to FIG.

2 is a partially exploded perspective view of the damper unit 130 and the coupling unit 150 of FIG.

The rotation module 135 may further include a center shaft 136, an eccentric shaft 137, and a link 139 in addition to the first mount projection 138 described above.

The center shaft 136 is rotatably supported by the upper connection bracket 131. The center axis 136 may correspond to the first and second seating projections 138 and 138 ', respectively.

The eccentric shaft 137 is configured to be coupled to an eccentric position at the center of the central shaft 136. The eccentric shaft 137 passes through the lower drive bracket 133 and protrudes to the outside. The first seating protrusion 138 or the second seating protrusion 138 'is coupled to the eccentric shaft 137.

The vibration-proof module 141 may include a first plate 142, a second plate 143, and a vibration-proof rubber 144. The first plate 142 may be a metal plate coupled to the upper connection bracket 131. The second plate 143 may be a metal plate coupled to the lower drive bracket 133. The anti-vibration rubber 144 is a rubber connected to the first plate 142 and the second plate 143.

The operation of the work assembly 100 according to this configuration will be described with reference to FIGS. 3 to 5.

3 is a partially exploded perspective view showing a rear portion of the rotation module 135 in the damper unit 130 and the coupling unit 150 of FIG. 2. FIG. 4 is a partial exploded perspective view of the damper unit 130 and the coupling unit 150 of FIG. 5 is a partially exploded perspective view showing the rotating module 135 completely exposed from the damper unit 130 and the coupling unit 150 of FIG.

Referring to FIGS. 1 to 5, the damper unit 130 may be first approached on the vibration attachment 110, and the process of coupling them may be performed. To this end, the second seating projection 138 'of the damper unit 130 is first fitted into the hook portion 117 of the vibration attachment 110. Thereafter, the first seating projection 138 is placed on the seating portion 116.

In this state, the fixed cam 152 of the first engaging portion 151 is engaged with the lower driving bracket 133 by the fixing pin 153, and the other portion 152b of the fixed cam 152 is engaged with the first And can be assembled to a mating position facing the outer surface of the mount projection 138.

Accordingly, the fixed cam 152 is positioned between the first mounting projection 138 and the fixed flange 157. To further strengthen the assembly, a fixing nut 154 may be additionally fastened to the fixing pin 153. Then, the fixing flange 157 of the second engaging portion 156 and the fixing cam 152 can be assembled more firmly by the fixing bolt 158.

By such a coupling method, the coupling between the vibration attachment 110 and the damper unit 130 can be accomplished in a simple manner without occupying a large space or increasing the weight.

In operation of the integrally joined work assembly 100, the vibration attachment 110 generates vibration by the vibrating body 113. [ The vibration causes the vibration attachment 110 to oscillate in a manner of ascending and descending up and down.

At this time, the lower driving bracket 133 of the damper unit 130 coupled to the vibration attachment 110 is also vibrated together with the vibration attachment 110. On the other hand, the upper connection bracket 131 is connected to the arm of the excavator and remains fixed.

In this situation, the relative movement between the upper connection bracket 131 and the lower drive bracket 133 (and the vibration attachment 110) is enabled and the vibration energy is dissipated between the rotation module 135 and the vibration prevention module 141 ).

Specifically, when the vibration attachment 110 and the lower driving bracket 133 are moved upward or downward, the eccentric shaft 137 connected to the lower driving bracket 133 moves up and down around the center shaft 136 . Thereby, the lower connection bracket 133 can be raised and lowered while maintaining the upper connection bracket 131 in a fixed position. At this time, the front and rear center axes 136 can be rotated by being interlocked with each other by a link 139 having an upper link 139a and a lower link 139b.

Furthermore, the vibration energy causing the lifting between the upper connection bracket 131 and the lower drive bracket 133 is weakened by the prevention module 141. More specifically, the upper connection bracket 131 maintains its position and the lower drive bracket 133 moves up and down, so that the vibration-proof rubber 144 is elastically deformed between the first plate 142 and the second plate 143 The vibration energy is attenuated while being twisted.

The working assembly in which the vibration attachment and the damper are integrated as described above is not limited to the configuration and operation manner of the embodiments described above. The embodiments may be configured so that all or some of the embodiments may be selectively combined so that various modifications may be made.

100: Working assembly integrated with vibration attachment and damper
110: Vibration attachment 111: Body
113: Vibrating body 115: Attachment bracket
116: seat part 117: hook part
130: damper unit 132: upper connection bracket
133: lower drive bracket 135: rotation module
141: Dustproof module 150: Coupling unit
151: first coupling portion 156: second coupling portion

Claims (10)

A vibration attachment having a seating portion;
A damper unit connected to the arm of the construction machine and configured to buffer vibrations generated in the vibration attachment and having a first seating projection seated on the seating portion; And
A first engaging portion provided at the vibration attachment and located at a coupling position for coupling the first seating projection to the seating portion; and a second coupling portion provided at the damper unit, And a coupling unit having a first coupling portion and a second coupling portion, the coupling portion having a first coupling portion and a second coupling portion.
The method of claim 1,
Wherein the seating portion, the first seating projection, the first coupling portion, and the second coupling portion are sequentially arranged along one direction.
The method according to claim 1,
Wherein the first coupling portion includes:
And a stationary cam having a portion rotatably coupled to the attachment bracket and another portion contacting the first seating projection. ≪ RTI ID = 0.0 >< / RTI >
The method of claim 3,
Wherein the first coupling portion includes:
Further comprising a fixed pin projecting from a portion of the fixed cam and rotatably inserted into the attachment bracket. ≪ Desc / Clms Page number 13 >
The method according to claim 1,
Wherein the vibration attachment further comprises an attachment bracket formed with the seating portion,
The damper unit further includes a lower drive bracket disposed to face the attachment bracket,
Wherein the second engaging portion includes a fixing flange bent at the lower driving bracket and facing the first engaging portion.
6. The method of claim 5,
And the second engagement portion includes:
And a fixing bolt penetrating through the fixing flange and fastened to the first coupling portion.
The method according to claim 1,
Wherein the vibration attachment further comprises a hook portion,
Wherein the damper unit further comprises a second seating projection inserted to be hooked onto the hook portion.
The method according to claim 1,
Wherein the vibration attachment further comprises an attachment bracket formed with the seating portion,
The damper unit includes:
An upper connection bracket connected to the arm of the construction machine;
An eccentric rotation module having a central shaft rotatably installed on the upper connection bracket, and an eccentric shaft eccentrically disposed at a center of the central shaft and coupled with the first seating protrusions;
A lower drive bracket rotatably inserted into the eccentric shaft and disposed to face the upper connection bracket; And
And a vibration damping module connecting the upper connection bracket and the lower drive bracket to each other to reduce relative vibration between the upper connection bracket and the lower drive bracket.
9. The method of claim 8,
The dust-
A first plate coupled to the upper connection bracket;
A second plate coupled to the lower drive bracket; And
And a vibration damping rubber connected to the first plate and the second plate.
9. The method of claim 8,
The attachment bracket is provided as a pair facing each other,
Wherein the lower drive bracket is provided in a pair facing each other, and the vibration attachment and the damper are integrated between the pair of attachment brackets.

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