KR20090058626A - Gripper for a excavator - Google Patents

Abstract

A gripper device for an excavator is provided to have the simple structure to operate a first and second grippers operate together at the same time. A gripper device for an excavator comprises: a clamp(10) combined in an end part of an arm(7) of the excavator; a first gripper(20) combined in the clamp; a hydraulic cylinder(30) installed between the air and the clamp, circulating the first gripper; a support stand(40) combined in a connecting rod(7a) of the arm; a second gripper(50) combined in the end part of the support stand; and an engagement member(60) installed between the first and second gripper to rotate the second gripper to the opposite direction of the first gripper when the first gripper rotates.

Description

Gripper forceps for excavators {GRIPPER FOR A EXCAVATOR}

1 is a schematic structural diagram of a tong device for an excavator according to the prior art.

Figure 2 is a schematic structural diagram of a tong device for an excavator according to the present invention.

Figure 3 is an exploded perspective view of the excavator forceps device according to the present invention.

Figure 4 is an operation of the excavator forceps device according to the present invention.

Explanation of symbols on the main parts of the drawings

1: Excavator forceps device according to the present invention

7: cancer

7a: splice

10: clamp

20: first tongs

30: hydraulic cylinder

40: support

50: second tongs

60: linkage member

100: Excavator forceps device according to the prior art

The present invention relates to a tong device for an excavator, and more particularly, it is mounted on the end of the excavator arm instead of the bucket or mounted to interact with the bucket to lift the work easily by lifting a heavy material such as stone or wood difficult to work with the bucket alone It relates to an excavator tong device that facilitates as well as facilitates the dismantling of buildings.

In general, excavators work on cabins that form a driver's boarding space, a hydraulic device that generates power, and a boom, arm, bucket, etc. operated by the hydraulic device, on a lower running body formed mainly in a caterpillar. It is a special vehicle that is formed in a structure in which a device or the like is mounted, and is designed to carry out various tasks such as dumping soil at a specific place and loading it on a transport vehicle such as a dump truck.

In the case of an excavator, a boom, an arm and a bucket configured to be articulated are configured to be movable by each hydraulic cylinder and configured to be provided to hydraulic pressure from each hydraulic device to each hydraulic cylinder.

The bucket is usually coupled to a clamp formed at the end of the arm. Depending on the type of work, a breaker for rock breaking may be coupled to the end of the arm, or a crusher for dismantling work such as a building may be coupled. In addition, according to the embodiment, the tongs are installed instead of the buckets or interact with the buckets to easily lift the heavy materials such as stone or wood, which are difficult to work with the buckets, to facilitate the work as well as to demolish the building. It may also be mounted to.

Figure 1 is a schematic structural diagram of a tong device 100 for excavators according to the prior art.

Excavator forceps device 100 according to the prior art, the arm is articulated with the boom (5), the boom (5) is operated by the hydraulic cylinder (6) for arm operation and the engaging holes (7a) protruding Installed in the excavator (3) comprising a (7), the clamp 110 is rotatably coupled to the end of the arm (7), the first tongs (120) coupled to the clamp 110, and the arm A first hydraulic cylinder 130 installed between the 7 and the clamp 110 to operate the first tongs 120, and a second tongs rotatably coupled to the coupling hole 7a of the arm 7 140, a second hydraulic cylinder 150 provided between the arm 7 and the second tong 140 to operate the second tong 140, and to provide a hydraulic force to the second hydraulic cylinder 150 As it comprises the hydraulic line 160, the first tongs 120 is operated by the first hydraulic cylinder 130 and the second tongs 140 are individually operated by the second hydraulic cylinder 150 Has a configuration.

However, in order to install the excavator forceps device 100 according to the prior art to the existing excavator (3), the hydraulic line 160 for providing hydraulic pressure to the second hydraulic cylinder 150, the second hydraulic cylinder 150. ) To be installed separately, there is a problem that the installation of the tongs for excavator 100 is not only difficult, but also expensive to install.

In addition, in order for the first tong 120 and the second tong 140 to be simultaneously crimped and unfolded, the amount of hydraulic pressure flowing into the first hydraulic cylinder 130 and the second hydraulic cylinder 150 must be simultaneously controlled. There is also.

Therefore, an object of the present invention is to provide an excavator tongs device that can be attached and detached as well as a simple kinematic structure without the need to install a separate hydraulic cylinder and a hydraulic line can be operated with a simple kinematic structure. .

An object of the present invention as described above, in the tongs for excavator installed in the arm is a coupler is a protrusion formed, the clamp is rotatably coupled to the end of the arm, the first forceps coupled to the clamp, and the arm and A hydraulic cylinder installed between the clamps, the hydraulic cylinder rotating the first tongs as the clamp is rotated with respect to the arm, a support coupled to a coupling hole of the arm, and a pivot coupled to an end of the support. And a second interlocking member installed between the first tongs and the second tongs so that the second tongs are rotated in the opposite direction of rotation of the first tongs when the first tongs is rotated. It is achieved by the tong device for excavator.

According to a preferred feature of the invention, the first tongs are formed of a conventional bucket.

According to a further preferred feature of the invention, the second tong is rotatably coupled to the upper side of the end of the support, the linkage member is connected to the upper end of the second tong.

According to a more preferred feature of the invention, the support is formed in a bar shape having a U-shaped yellow cross-section and one side of the insertion hole is formed is inserted into the engaging hole of the arm, the linkage member has an arc shape having a radius of curvature Is formed.

DETAILED DESCRIPTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to explain in detail enough to enable those skilled in the art to easily carry out the present invention. This does not mean that the technical spirit and scope of the present invention are limited.

2 is a schematic structural diagram of an excavator tongs device 1 according to the present invention, Figure 3 is an exploded perspective view of an excavator tongs device 1 according to the present invention, Figure 4 is an excavator according to the present invention The operation diagram of the tong device 1 is shown.

Excavator clamp device (1) according to the present invention is easy to lift the heavy material such as stone or wood difficult to work with only the bucket to facilitate the work as well as to facilitate the demolition work of buildings 7a ) Is installed in place of the bucket to the protruding arm (7), as shown in Figures 2 to 4, the clamp (10) and the clamp (10) rotatably coupled to the end of the arm (7) A hydraulic cylinder installed between the first forceps 20 coupled to the arm 7 and the clamp 10 and rotating the first forceps 20 by rotating the clamp 10 with respect to the arm 7. 30, a support 40 coupled to the engaging hole 7a of the arm 7, a second tong 50 that is rotatably coupled to an end of the support 40, and a first tong 20 And the second tongs 50 are installed between the second tongs when the first tongs 20 is rotated opposite to the direction of rotation of the first tongs 20 It comprises an interlocking member 60 to be rotated.

Here, the clamp 10 is to connect the arm 7 and the first forceps 20 to be described later similarly to the joint, one side of which is rotatably coupled to the end of the arm 7, the other side will be described later. The first tongs 20 to be combined are combined.

The first clamp 20 is coupled to the clamp 10 described above. The first clamp 20 is interlocked with the second clamp 50, which will be described later, to lift a heavy object such as stone or wood, or to demolish a building. In order to enable the work, in addition to the shape shown in Figure 3 may be formed according to the embodiment of the bucket installed in the excavator, it may be formed in a shape similar to the jaw crusher.

When the first tongs 20 is formed of a bucket already installed in the excavator, the operator to install only the support 40, the second tongs 50 and the interlocking member 60, which will be described later, the excavator tongs according to the present invention The installation of the device 1 can be completed.

The hydraulic cylinder 30 is installed between the arm 7 of the excavator and the clamp 10 described above. The hydraulic cylinder 30 has a clamp 10 in which one side thereof is rotatably coupled to the arm 7. By rotating or clamping the clamp 10 relative to the arm 7 by pushing or pulling the other side thereof, it serves to rotate the first tongs 20 fixed to the clamp 10.

Although not shown, the hydraulic oil for generating the hydraulic force in the inlet cylinder 30 is supplied to the inlet cylinder 30 through a hydraulic apparatus and a hydraulic line installed in the excavator.

A support 40 is fitted into and coupled to the coupling hole 7a of the arm 7 of the excavator, which serves as a frame for installation of the second tongs 50 to be described later. As shown, it is formed in a bar shape having a U-shaped yellow cross section, one side is formed with an insertion hole 41 is inserted into the coupling hole (7a) of the arm (7), the arm by a fastening means such as a pin The coupler 7a of (7) and both side walls of the c-shaped yellow cross section are integrally penetrated and joined.

The second tongs 50 are rotatably coupled to an end of the above-described support 40, and the second tongs 50 are interlocked with the above-mentioned first tongs 20 to pick up heavy materials such as stone or wood. Or dismantling of buildings.

The interlocking member 60 is installed between the above-described first tongs 20 and the second tongs 50. The interlocking member 60 is the second tongs 50 when the first tongs 20 rotate. The first to be rotated in the opposite direction of the rotation of the forceps 20 so that both the forceps 20 and 50 can be pinched or unfolded at the same time, it is preferably formed of a bar (bar) formed in an arc shape having a radius of curvature. .

The second tongs 50 are rotated at the end of the support 40 so that the second tongs 50 may be rotated in the opposite direction to the rotational direction of the first tongs 20 when the first tongs 20 are rotated. It is preferably coupled, the interlocking member 60 is one side is rotatably connected to the upper end of the second tongs (50) and the other side is preferably rotatably connected to the first tongs (20).

Hereinafter, referring to Figure 4 describes the overall operation of the excavator forceps device 1 according to the present invention as follows:

When the hydraulic force is actuated on the hydraulic cylinder 30 and the hydraulic cylinder 30 pushes the clamp 10, the clamp 10 is fixed to the clamp 10 as it is rotated counterclockwise at the end of the arm 7. The first tong 20, which is also rotated in the counterclockwise direction, is folded.

The second tongs 50 are rotatably coupled to an upper end of the support 40 and the linkage member 60 corresponds to a position higher than the position at which the second tongs 50 are coupled to the support 40. As rotatably connected to the upper point of the second tongs 50, when the first tongs 20 are rotated counterclockwise, the interlocking member 60 pushes the upper point of the second tongs 50, As a result, the second tongs 50 are rotated in the clockwise direction and are linked to the first tongs 20 at the same time.

On the contrary, when the hydraulic cylinder 30 pulls the clamp 10, the clamp 10 is rotated clockwise at the end of the arm 7 so that the first tongs 20 fixed to the clamp 10 are also clockwise. It happens as it is rotated.

When the first tongs 20 are rotated in the clockwise direction, the interlocking member 60 pulls the upper point of the second tongs 50, and as a result, the second tongs 50 are rotated in the counterclockwise direction. Interlocked with 1 tongs 20 will be opened at the same time.

According to the tong device for excavator according to the present invention as described above, there is no need to install a separate hydraulic cylinder and a hydraulic line in installing the tong device to the excavator has an excellent effect that can be easily attached and detached.

In addition, the excavator forceps device according to the present invention is not the interlocking operation of the two straight cylinders by a separate hydraulic cylinder and the hydraulic line, but the support is installed on the engaging port of the arm, the second tongs installed on the support, both clamps By a simple kinematic structure including an interlocking member for connecting the two tongs are excellent effect that the interlocking operation can be made or pinched at the same time.

Claims (4)

In the excavator forceps device is installed on the arm is a coupler, protruding, A clamp rotatably coupled to an end of the arm; A first tong coupled to the clamp; A hydraulic cylinder installed between the arm and the clamp and rotating the first tongs by rotating the clamp with respect to the arm; A support coupled to the coupler of the arm; A second tong rotatably coupled to an end of the support; And And an interlocking member installed between the first tongs and the second tongs so that the second tongs are rotated in a direction opposite to the direction of rotation of the first tongs when the first tongs are rotated. Tongs. The method according to claim 1, The first tongs is an excavator tongs, characterized in that formed in a conventional bucket. The method according to claim 1 or 2, The second tongs is rotatably coupled to the upper side of the end of the support, the linkage member is an excavator tongs, characterized in that connected to the upper end of the first tongs. The method according to claim 3, The support is formed in the shape of a bar having a U-shaped yellow cross-section and one side of the insertion hole is formed is inserted into the coupling hole of the arm, the interlocking member is formed in an arc shape having a radius of curvature Device.

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