KR20150142192A

KR20150142192A - Stone grip for an excavator

Info

Publication number: KR20150142192A
Application number: KR1020140070512A
Authority: KR
Inventors: 배병철
Original assignee: (유) 주현
Priority date: 2014-06-11
Filing date: 2014-06-11
Publication date: 2015-12-22

Abstract

The present invention provides a stone grip for an excavator, comprising: a gear housing formed on a lower part of a link bracket mounted on a boom and a coupling of the excavator; a rotation plate installed on the lower surface of the gear housing to be rotated by driving a hydraulic motor; and a pair of pincers rotatably installed on a hinge part of the lower part of the rotation plate, wherein the pincers are rotated by driving a hydraulic cylinder to be opened or perform a gripping operation. A pair of triangular auxiliary pincers are coupled to lower ends of the pincers based on an eccentric axis, and the auxiliary pincers are rotated by a pair of auxiliary hydraulic cylinders formed on lower parts of interiors of the pincers. The pincers formed on the lower part of the link bracket are rotated by the hydraulic cylinders, the auxiliary pincers are coupled to the lower ends of the pincers based on the eccentric axis, and the auxiliary pincers are rotated by a pair of other hydraulic cylinders, thereby preventing the movement of a work target object and allowing the work target object to be stably fixated within the pincers.

Description

{Stone grip for an excavator}

The present invention relates to a stone grip for an excavator. More particularly, the present invention relates to a stone grip for an excavator, more specifically, a pair of claws formed on a lower portion of a link bracket is rotated by a hydraulic cylinder, an auxiliary claw is eccentrically engaged with a lower end of the claw, The present invention relates to a stone grip for an excavator, which is rotated by a pair of other hydraulic cylinders, thereby preventing a flow of a workpiece and ensuring stable fixing in a claw.

In general, landscaping, masonry, and demolition work require a lot of manpower and labor due to the load and volume of wood, stone, and waste concrete. In recent years, excavators have been used to reduce manpower and labor, These excavators are equipped with a pair of clamps instead of a bucket for boom and coupling where a bucket for excavation is mounted.

BACKGROUND OF THE INVENTION [0002] An excavator currently used for landscaping work, masonry work, demolition work, etc., is provided with a link bracket mounted on a boom and a coupling of an excavator on an upper side portion, and a pair of claws are installed on a lower side thereof with a hinge portion as a center. A pair of grippers is pivotally operated by driving of the hydraulic cylinder to be opened or to grip the workpiece, thereby constituting a gripper device for an excavator.

Therefore, in the conventional excavator clamp device, a pair of clamps are installed so as to face each other and rotate by driving the hydraulic cylinder, so that the workpiece such as wood, stone, and waste concrete is gripped between the clamps to perform transportation or construction work.

Background Art [0002] As prior arts of an excavator clamp device widely used for landscaping work, masonry work, demolition work, etc., there are domestic utility model registration No. 20-0277112, patent application No. 10-2003-0083396, 0027364 has been proposed.

In this conventional prior art, a link bracket mounted on a boom and a coupling of an excavator is provided on an upper portion of the excavator, and a rotary plate is installed on a lower portion of the rotary bracket to rotate by driving a hydraulic motor. And the pair of claws are pivotally operated by the driving of the hydraulic cylinder so as to be opened or to grip the workpiece. Therefore, when the position of the claw is not suitable for the work in the course of the work, Since the workpiece is gripped by selectively rotating the position, there is no problem in transportation or construction work of wood, stone, and waste concrete.

However, in the case of gripping a stone (especially a stone) among the objects to be worked, the shape of the stone is free, so that there is a problem that it is difficult to grasp the stone stably with a claw that rotates only by a single hydraulic cylinder.

That is, since the stone flows during transportation after gripping the stone, the transportation operation is not smoothly performed.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to solve the above problems, And it is an object of the present invention to provide a stone grip for an excavator that prevents rotation of a work object and ensures stable fixation in a gripper because it is pivoted by a pair of hydraulic cylinders.

In order to achieve the above object, according to the present invention, there is provided a stone grip for an excavator, comprising: a gear housing formed at a lower portion of a link bracket mounted on a boom and a coupling of an excavator; A pair of grippers are provided on a hinge portion at a lower portion of the rotary plate so as to be rotatable and a pair of claws are rotated and operated by driving a hydraulic cylinder so as to be opened or gripped. A pair of triangular-shaped auxiliary claws are eccentrically coupled to the lower end of the claws, and the auxiliary claws are rotatable by a pair of auxiliary hydraulic cylinders formed at the bottom of the claws.

The other end of the auxiliary hydraulic cylinder, that is, the cylinder rod, is coupled to the upper end of the auxiliary claw.

As described above, according to the present invention, since the pair of claws formed on the lower portion of the link bracket is rotated by the hydraulic cylinder, the auxiliary claw is eccentrically engaged with the lower end of the claw and the auxiliary claw is rotated by another pair of hydraulic cylinders, This is a very useful invention that prevents flow of the object and ensures stable fixation in the nippers.

1 is a perspective view showing a stone grip for an excavator according to the present invention;
Figure 2 - sectional view of Figure 1;

The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

A stone grip 100 for an excavator according to the present invention is characterized in that a gear housing 111 is formed below a link bracket 110 mounted on a boom and a coupling of an excavator, A pair of claws 140 are rotatably mounted on the hinge 130 at a lower portion of the rotation plate 120 while a pair of claws 140 are installed at the bottom of the rotation plate 120, A pair of triangular-shaped auxiliary claws 160 are coupled to an eccentric shaft 161 at the lower end of the claw 140, and the pair of triangular claws 160 are connected to the eccentric shaft 161, The auxiliary claw 160 is rotatably supported by a pair of auxiliary hydraulic cylinders 170 formed in the lower portion of the claw 140.

The link bracket 110, the gear housing 111, the rotation plate 120, the hinge 130, the claw 140, and the hydraulic cylinder 150 have known configurations (Korean Utility Model Registration No. 20-0277112, Patent Application No. 10-2003-0083396, and Publication No. 10-2009-0027364), so a detailed description thereof will be omitted.

The auxiliary claw 160 is coupled to the lower end of the claw 140 so that the auxiliary claw 160 is coupled to the eccentric shaft 161 to be rotatable by the auxiliary hydraulic cylinder 170.

That is, the auxiliary pinchers 160 are formed in a triangular shape as a whole. At this time, the vertexes of one of the vertexes forming the triangle are positioned at the lower end of the pincers 140 toward the inside of the pincers 140 as shown in FIG. And is axially coupled to be eccentric.

A pair of auxiliary hydraulic cylinders 170 are vertically formed on the auxiliary claw 160 so as to rotate the auxiliary claw 160. One end of the auxiliary hydraulic cylinder 170 is connected to the claw 140, And the other end of the auxiliary hydraulic cylinder 170, that is, the cylinder rod, is configured to be coupled to the upper end of the auxiliary claw 160. [

One end of the auxiliary hydraulic cylinder 170 is coupled by a fixed shaft 171 formed in the bent portion 140a of the claw 140 and the other end is coupled to the auxiliary hydraulic cylinder 170 by the eccentric shaft 161 And is coupled to the pivot shaft 162 formed on the upper portion of the pawl 160.

Although the present invention has been described with reference to the exemplary embodiments, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations may be made without departing from the scope of the appended claims.

Description of the Related Art [0002]
100: Stone grip for excavator of the present invention
110: Link bracket 111: Gear housing
120: rotation plate 130: hinge part
140: Nipple 150: Hydraulic cylinder
160: Auxiliary nipple 161: Eccentric shaft
162: Pivot shaft 170: Auxiliary hydraulic cylinder
171: Fixed shaft

Claims

A gear housing 111 is formed below a link bracket 110 mounted on a boom and a coupling of an excavator and a rotary plate 120 is installed on the bottom surface of the gear housing 111 to rotate by driving a hydraulic motor A pair of claws 140 are rotatably installed on the hinge 130 at a lower portion of the rotary plate 120 while a pair of claws 140 are rotated by a hydraulic cylinder 150 In a stone grip for an excavator configured to grip,
A pair of triangular-shaped auxiliary claws 160 are coupled to an eccentric shaft 161 at the lower end of the claws 140. The auxiliary claws 160 are coupled to a pair of auxiliary hydraulic cylinders 170). &Lt; RTI ID = 0.0 > 17. < / RTI >

The method according to claim 1,
One end of the auxiliary hydraulic cylinder 170 is fixed to the bent portion side 140a of the claw 140 and the other end of the auxiliary hydraulic cylinder 170 is connected to the upper end of the auxiliary claw 160 Wherein the gripping portion is formed of a synthetic resin.