KR101576854B1

KR101576854B1 - Secondary tongs for excavator

Info

Publication number: KR101576854B1
Application number: KR1020150147762A
Authority: KR
Inventors: 이강원
Original assignee: 이강원
Priority date: 2015-10-23
Filing date: 2015-10-23
Publication date: 2015-12-21

Abstract

The present invention relates to an auxiliary gripper for an excavator, comprising: a guide portion mounted on an excavator arm and having a guide groove formed therein; a slider moving along the guide groove; A boom support portion formed on the slider so as to stand on one end of the slider; a first rotation fixing portion formed on the slider so as to stand on the opposite side of the boom support portion; A clamping body having one end coupled to the fixing part so as to be rotatable; a second coupling part coupled to the first rotation fixing part, one end of which is coupled to the first rotation fixing part and the other end is coupled to the second rotation fixing part, A second boom for rotating the body around the first rotation fixing part, and a second boom for guiding the position of the slider It is formed on the potentiometer and the first rotating fixing relates to an auxiliary forceps for excavators comprising an encoder for measuring the amount of rotation of the clamp body.

Description

{SECONDARY TONGS FOR EXCAVATOR}

The present invention relates to an auxiliary gripper for an excavator, and more particularly to an auxiliary gripper for an excavator having a sensor for position storage.

Generally, excavators are mainly used in civil engineering, construction, and construction sites, and perform excavation, loading, crushing, sorting, and picking up objects.

Conventional excavators connect the boom and the arm and attach the bucket to the end. Conventional excavators are also equipped with clamps on the opposite side of the bucket to perform an act of picking up objects.

Excavators equipped with tongs are difficult to carry out operations such as excavation, loading, and crushing, and the tongs must be removed for this purpose.

In addition, when a forceps is used to lift an object, a worker or a user must operate the forceps separately for every operation, so that an object breakage due to a malfunction of the worker frequently occurs, and the work time becomes long.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an auxiliary gripper for an excavator equipped with a sensor for position memory in an auxiliary gripper of an excavator.

In order to solve the above-described problems, the present invention provides a hydraulic excavator comprising: a guide portion mounted on an excavator arm and having a guide groove formed therein; A slider moving along the guide groove; A first boom having one end rotatably coupled to the guide portion and the other end rotatably coupled to the slider so as to be variable in length to move the slider; A boom support portion formed to stand on one end of the slider; A first rotation fixing part formed on the slider and formed to stand on the opposite side of the boom support part; A grip body having one end coupled to the first rotation fixing part so as to be rotatable; And the other end of which is coupled to the second rotation fixing part formed on the pawl body so as to rotate the pawl body, and the length of the pawl body is changed to the first rotation fixing part A second boom for causing the first boom to rotate about its center; A potentiometer formed on the guide portion and measuring a position of the slider; And an encoder formed on the first rotation fixing part and measuring an amount of rotation of the pawl body.

Wherein the auxiliary tongue for the excavator further comprises a control unit for receiving the position and the amount of rotation measured by the potentiometer and the encoder, wherein the control unit generates a control signal for controlling the length of the first boom through the position , And a control signal for adjusting the length of the second boom through the amount of rotation can be generated.

The auxiliary tongue for excavator includes a first fixing part for coupling the first boom and the guide part; And a second fixing part for coupling the first boom and the slider, wherein the first and second fixing parts are formed of bolts or fins.

The pawl body may be formed with two bars, and the first pivotal fixing part may be formed so that the thickness of the center thereof is larger than the thickness of the both ends thereof so as to maintain the gap between the two bars of the pawl body.

The auxiliary tongs for an excavator according to an embodiment of the present invention automatically sets the position and rotation amount of the auxiliary tongs provided on the auxiliary tongs through the sensors provided on the auxiliary tongs when the same size of the object is repeatedly moved, The auxiliary tongs can be automatically moved without controlling the operation of the auxiliary tongs.

Also, the auxiliary tongs for an excavator according to the embodiment of the present invention can be manufactured separately for easy attachment to an existing excavator, thereby increasing utilization.

1 is a side view showing an auxiliary gripper for an excavator mounted on an excavator according to an embodiment of the present invention;
Fig. 2 is a perspective view showing the auxiliary gripper for the excavator shown in Fig. 1, Fig. 3 is a side view showing a side view of the auxiliary gripper shown in Fig. 1, One top view.
Figures 5 and 6 are views for explaining the operation of the auxiliary clamp.

Hereinafter, the description of the present invention with reference to the drawings is not limited to a specific embodiment, and various transformations can be applied and various embodiments can be made. It is to be understood that the following description covers all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In the following description, the terms first, second, and the like are used to describe various components and are not limited to their own meaning, and are used only for the purpose of distinguishing one component from another component.

Like reference numerals used throughout the specification denote like elements.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms " comprising, "" comprising, "or" having ", and the like are intended to designate the presence of stated features, integers, And should not be construed to preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6 attached hereto.

1 is a side view showing an auxiliary gripper for an excavator mounted on an excavator according to an embodiment of the present invention;

Referring to FIG. 1, an auxiliary gripper 200 for an excavator is coupled to an excavator arm 100. At this time, the auxiliary tongue 200 for an excavator is attached to one side of the inside of the excavator arm 100 so as to engage with the bucket 120 and pick up an object. That is, as shown in FIG. 1, an auxiliary gripper 200 for an excavator is coupled to a surface on the opposite side of the main boom 100 that drives the bucket 120.

The auxiliary clamp 200 for the excavator moves in a direction away from the bucket 120 and waits so that the bucket 120 does not interfere with the excavation operation during excavation work. When an excavator is used to pick up an object, the auxiliary clamp 200 descends and picks up the object together with the bucket 120.

At this time, when the same size object is repeatedly moved, the position and the rotation amount of the auxiliary gripper 200 provided on the auxiliary gripper 200 are automatically set through the sensors provided on the auxiliary gripper 200, The auxiliary tongue 200 can be automatically moved without controlling the operation of the auxiliary tongue.

The auxiliary tongue 200 will be described in more detail with reference to FIGS. 2 to 6. FIG.

Fig. 2 is a perspective view showing the auxiliary gripper for the excavator shown in Fig. 1, Fig. 3 is a side view showing a side view of the auxiliary gripper shown in Fig. 1, It is a top view.

2 to 4, an auxiliary gripper for an excavator according to an embodiment of the present invention includes a guide unit 210, a slider 230, a first boom 220, a second boom 240, a boom support 250 ), A pliers body (260), an encoder (300), and a potentiometer (400).

Specifically, the guide portion 210 is engaged with the excavator arm 100 shown in Fig. The guide unit 210 is coupled to the inner surface or the lower surface of the excavator arm 100 to mount the auxiliary gripper 200 on the excavator arm 100.

The guide part 210 has a guide groove 215 therein to allow the slider 230 to move along the guide groove 215.

The slider 230 moves along the guide groove 215 formed in the guide portion 210.

The first boom 220 is a means that is variable in length by hydraulic pressure or pneumatic pressure. The first boom 220 is rotatably coupled to the side surface of the guide part 210 by a first fixing part 222a, And is rotatably coupled to the side surface of the second fixing part 222b. The first boom 220 is controlled through a control unit (not shown), allowing the slider 230 to move along the guide unit 210. Here, the first and second fixing portions 222a and 222b may be formed of a bolt, a pin, or the like.

For example, when the first boom 220 is stretched, the slider 230 moves in the direction of the bucket 120 mounted on the excavator arm 100, and when the first boom 220 contracts, the slider 230 moves in the direction opposite to the bucket 120 .

The pliers body 260 is secured with the two parallel bars being spaced apart. The pliers body 260 may be used as a tool for picking up the object to be moved together with the bucket 120. The forceps body 260 can be attached to the clamping jaw 265 to prevent the object from slipping at the end and to prevent damage to the object.

The pawl body 260 is fixed to be rotatable by the first rotation fixing portion 272 and the second rotation fixing portion 280. [ The pawl body 260 may be fixed to one end of the pawl body 260 by a first rotation fixing portion 272 fixed to one upper surface of the slider 230. Here, the first rotation fixing part 272 is provided in the shape of two rods so that the two rods are parallel to each other. Accordingly, the first rotation fixing portion 272 is formed in a thick cylindrical shape at the middle portion thereof to maintain the gap, and both ends thereof are inserted into the through hole formed at one end of the gripping body 260 and thinner than the middle portion of the logo.

In addition, the pawl body 260 is fixed to be rotatable by the second rotation fixing portion 280 connected to the second boom 240.

The second rotation fixing part 280 is provided with a bolt or a pin or the like in the through hole 262 formed through the middle area of the grip body 260 and is rotatably supported by the bolt or pin 280 on the other end side of the second boom 240 As shown in Fig.

One end of the second boom 240 is rotatably connected to the boom support portion 250.

Here, the boom support portion 250 is formed to extend vertically from the slider 230 on the end side of the slider 230, and a through hole is formed on the end of the boom support portion 250 so that the second boom 240 is bolted. The boom support part 250 may be provided with two plates having through holes for fixing the second boom 240 by bolts or fins at both ends of the second boom 240 so that the second boom 240 can rotate in a certain area . A bolt 252 passing through the through hole is coupled to penetrate one end of the second boom 240 to rotate the second boom 240 in a certain area.

The other end of the second boom 240 is rotatably coupled to the second rotation fixing unit 280 so that the forceps body 260 rotates about the first rotation fixing unit 272.

The encoder 300 measures the amount of rotation of the gripper body 260 and measures the amount of rotation of the gripper body 260 and transmits it to a storage unit (not shown) . At this time, the encoder 300 is formed in the first rotation fixing part 272 to measure the rotation amount of the gripping body 260. The second boom 240 can be automatically operated without the user adjusting the second boom 240 of the gripper body 260 when the same object is picked up through the amount of rotation of the gripper body 260 measured by the encoder 300 It can be repeatedly shrunk or stretched.

The potentiometer 400 is installed in the guide portion 210 to measure a change in the position of the slider 230. The potentiometer 400 is a type of position measuring sensor for measuring the moving range of the guide unit 210. The potentiometer 400 measures a moving distance of the auxiliary gripper 200 for picking up an object and stores it in a storage unit (Not shown).

The control unit automatically operates the first boom 220 and the second boom 240 based on the measured value when the same repeated operation is performed based on the measured values from the encoder 300 and the potentiometer 400 .

Here, the driving unit for operating the first and second boom 240 and the like are not shown, but can be easily combined by a person skilled in the art. In addition, the first and second boom 240 can be operated by controlling the output of the solenoid valve in a control unit by a hydraulic method.

The operation of the auxiliary clamp 200 according to the embodiment of the present invention will be described with reference to FIGS. 1, 5, and 6. FIG.

5 and 6 are views for explaining the operation of the auxiliary clamp. The following description will be made with reference to the constituent parts of FIG. 2 to FIG.

First, as shown in FIG. 1, when the auxiliary tongs 200 are not used, the length of the first boom 220 of the auxiliary tongs 200 is reduced to move to the upper side of the excavator arm 100.

The length of the first boom 220 is controlled to increase when the auxiliary tongue 200 is operated to pick up the object and the length of the second boom 240 is reduced before or simultaneously with the operation of the first boom 220 So that the state shown in FIG. 5 is obtained.

Thereafter, the length of the second boom 240 is controlled to be increased so that the catching body 260 is moved in the direction of the bucket 120 to pick up the object. Then, after the excavator arm 100 moves the object, the length of the second boom 240 is reduced so that the state shown in Fig. 5 is attained, thereby placing the object at a predetermined position.

At this time, the potentiometer 400 and the encoder 300 provide the position and angle (the amount of rotation) to the storage unit or the control unit when picking up the object. When the object of the same size is picked up, the control unit controls the first boom 220 and the second boom 240 through the measured position and angle (the rotation amount) so that the first boom 220 and the second boom 240 are operated. To be automatically operated by inversion.

As described above, the auxiliary tongs for an excavator according to the embodiment of the present invention automatically adjusts the position and the amount of rotation of the auxiliary tongs provided on the auxiliary tongs through the sensors provided on the auxiliary tongs when the same size is repeatedly moved So that the auxiliary tongs can be automatically moved even if the operator does not control the operation of the auxiliary tongs.

100: Excavator arm
110: main boom
120: Bucket
200: Secondary forceps
210: guide portion
215: Guide groove
220: 1st boom
222a, 222b: a first fixing part, a second fixing part
230: Slider
240: Second boom
250: Boom support
260: Tongue body
265: Joe
272: first rotation fixing portion
280: second rotation fixing portion
300: Encoder
400: potentiometer

Claims

A guide portion mounted on the excavator arm and having a guide groove formed therein;
A slider moving along the guide groove;
A first boom having one end rotatably coupled to the guide portion and the other end rotatably coupled to the slider so as to be variable in length to move the slider;
A boom support portion formed to stand on one end of the slider;
A first rotation fixing part formed on the slider and formed to stand on the opposite side of the boom support part;
A grip body having one end coupled to the first rotation fixing part so as to be rotatable;
And the other end of which is coupled to the second rotation fixing part formed on the pawl body so as to rotate the pawl body, and the length of the pawl body is changed to the first rotation fixing part A second boom for causing the first boom to rotate about its center;
A potentiometer formed on the guide portion and measuring a position of the slider; And
And an encoder which is formed on the first rotation fixing part and measures an amount of rotation of the pawl body.

The method according to claim 1,
And a control unit receiving the position and the amount of rotation measured by the potentiometer and the encoder,
Wherein the control unit generates a control signal for controlling the length of the first boom through the position and generates a control signal for controlling the length of the second boom through the amount of rotation.

The method according to claim 1,
A first fixing part for coupling the first boom and the guide part; And
Further comprising a second fixing part for coupling the first boom and the slider,
Wherein the first and second fastening portions are formed of bolts or fins.

The method according to claim 1,
The gripper body is formed with two bars,
Wherein the first rotation fixing part is formed such that a thickness of the center thereof is formed larger than a thickness of both ends thereof so as to maintain a space between the two bars of the claw body.