KR200490551Y1 - Safety nipper assembly for excavator - Google Patents

Abstract

It relates to an excavator pliers assembly coupled to one side of the boom of the excavator, for this purpose is a hydraulic cylinder hinged to the first bracket fixed to the upper portion of the boom; and hinged to the second bracket fixed to the lower portion of the boom, A pair of supporter arms coupled to a rod of the hydraulic cylinder and a first link connecting portion in a central region so as to pivot about the hinge coupling portion, and having a width relatively larger than the width of the boom, the lower portion of the boom Nippers for which two connecting arms are hinged to both sides; And a middle arm having one side linked to the end of the supporter arm and a second link connecting portion through the supporter arm so as to rotate with the supporter arm, and the other side linked to the third pin connecting portion with the nipper and the third link connecting portion. It includes, but the claw is made of a pair of side frames and integrally coupled to the connecting arm, the connecting frame is integrally connected to each side frame, the connecting frame is the supporter arm and the middle when the claw is folded up In order not to interfere with the arm and the hydraulic cylinder, a long hole and a relatively small sized hole communicating with the long hole are further formed along the longitudinal direction, and the middle arm has a safety pin which is further coupled to enter the long hole when rotated counterclockwise. , The safety pin is mounted on the outer surface mounting hole of the forefinger through the long hole when the forefinger is folded in close contact with one side of the boom It is configured to secure the Lengeh reliably characterized.

Description

Safety Nipper Assembly for Excavator {SAFETY NIPPER ASSEMBLY FOR EXCAVATOR}

The present invention relates to a safety claw assembly for an excavator, more specifically, when the claws are not used, the claws can be folded upward and closely overlapped with the boom to minimize interference by surrounding obstacles during the excavation work, and Safety pins are provided on the middle arm to prevent the claws from being in close contact with the boom, wherein the safety pins are in close contact with the outer surface of the claws in close contact with the boom to prevent sagging or spreading due to its own load. A safety claw assembly.

In general, construction sites, waste collection sites, and demolition sites require a lot of manpower and labor due to the load and volume of the object, and recently, an excavator is used to reduce manpower and labor and increase work efficiency.

An excavator applied to such a construction site or a waste storage site and a demolition site is equipped with a claw on an inner portion of a bucket to carry or construct wood, stone, and waste concrete.

At this time, when the claws are not used, the initial excavator was to separate the claws, but in recent years, the claws work as close as possible to the boom, but the buckling force occurs due to the load of the claws. Done.

In order to prevent the phenomena of the claws have been registered "excavator claw fixing device (Korea Republic Register No. 0451302)", but such claw fixing device has a cumbersome problem that a person has to manually lower the claw. have.

In addition, the practically registered "excavator tong device (Korean Registered Room No. 0469569)" has a curved structure in which the upper link for rotating the tongs is curved, and when folded, the tongs are not closely adhered to the surface of the boom. There was a problem in that interference caused by obstacles.

Korea Republic of Korea Registration Room No. 0451302 Republic of Korea Registered Utility No. 0469569

The present invention was conceived in view of the above problems, the first object of the present invention, when not using the claws, by folding the claws up close contact with the boom to partially overlap the boom to interfere with the surrounding obstacles during excavation work A safety pin is provided on the middle arm so as to minimize and prevent the claws coming into close contact with the boom, wherein the safety pins are in close contact with the outer surface of the claws coming in close contact with the boom to prevent sagging or opening due to its own load. A safety claw assembly for an excavator is provided.

The second object of the present invention is that the safety pin is mounted on the outer surface mounting hole of the forefinger in a state where the safety pin enters the mounting hole communicating with the long hole formed in the connecting frame of the forefinger, without a device or subsequent work to fix the forefinger. It is to provide a safety claw assembly for an excavator that can quickly fix the claw close to the boom by the body.

According to a feature for achieving the above object, the first design relates to an excavator pliers assembly coupled to one side of the boom of the excavator, for this purpose is a hydraulic cylinder hinged to the first bracket fixed to the top of the boom; A pair of supporter arms hinged to a second bracket fixed to a lower portion of the boom and coupled to a rod and a first link connecting portion of a hydraulic cylinder in a central region so as to pivot about a hinge coupling portion; and Nippers having a width relatively larger than the width of the boom, the two connecting arms are hinged to both sides of the lower side of the boom; And a middle arm having one side linked to the end of the supporter arm and a second link connecting portion through the supporter arm so as to rotate with the supporter arm, and the other side linked to the third pin connecting portion with the nipper and the third link connecting portion. It includes, but the claw is made of a pair of side frames and integrally coupled to the connecting arm, the connecting frame is integrally connected to each side frame, the connecting frame is the supporter arm and the middle when the claw is folded up In order not to interfere with the arm and the hydraulic cylinder, a long hole and a relatively small sized hole communicating with the long hole are further formed along the longitudinal direction, and the middle arm has a safety pin which is further coupled to enter the long hole when rotated counterclockwise. , The safety pin is mounted on the outer surface mounting hole of the forefinger through the long hole when the forefinger is folded in close contact with one side of the boom It is configured to secure the Lengeh reliably characterized.

In the second draft, in the first draft, each side frame of the claw is protruded inwardly of the claw to be configured to have a height difference with the connecting frame, and each side frame is formed of the boom by the height difference with the connecting frame. It is characterized in that it is as close as possible to overlap partially to the side.

The third bill, in the first bill, the supporter arm is composed of a horizontal portion which is in close contact with the one side of the boom horizontally folded up the claws, and an extension extending upwardly spaced in the 45 ° direction with respect to the horizontal portion, The extension part is positioned at 12 o'clock when the claws are folded, thereby maintaining the middle arm and the claws in a suspended state, thereby minimizing the load of the claws that the safety pin receives, and is capable of stably fixing the claws.

In the fourth draft, in the first draft, the middle arm is formed with a continuous upward curved portion and a downward curved portion, and the downward curved portion is formed with a plurality of coupling holes protruding upward so as to couple two safety pins at a predetermined interval. It is characterized in that it is configured to be securely fixed to the double claws.

The fifth bill, in the first bill, the safety pins are separated into two from the center and inserted into each other, and a plurality of pinholes are formed at the insertion part to be configured to adjust the length according to the width of the mounting hole. It is characterized by.

According to the safety nipper assembly for excavators of the present invention, when the claw is not used, the claw is folded upward to closely overlap the boom, thereby minimizing interference by surrounding obstacles during the excavation work.

 The safety pin enters the mounting hole in communication with the long hole formed in the connecting frame of the forefinger. It can be fixed quickly.

In addition, when the boom is erected vertically with the claws folded, the extension of the supporter arm is placed at 12 o'clock, so the middle arm and the claws are held in a suspended state to minimize the load of the claws that the safety pin receives. There is an effect that can be fixed stably.

1 is a perspective view showing a folded state of the safety claw assembly for excavators according to the present invention
Figure 2 and Figure 3 is a perspective view showing the operating state of the safety claw assembly for excavators according to the present invention,
4 is a perspective view showing a coupling relationship between the supporter arm and the middle arm;
5 is a plan view showing the supporter arm, the middle arm and the safety pin in FIG.
6 to 8 is a perspective view of the safety claw assembly for an excavator according to the present invention.

The following objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art.

The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the words 'comprise' and / or 'comprising' do not exclude the presence or addition of one or more other components.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In describing the specific embodiments below, various specific details are set forth in order to more specifically explain and to help understand the invention. However, readers with knowledge of this field to the extent that they can understand the present invention can recognize that they can be used without these specific details. In some cases, it is noted that parts of the invention that are not commonly known in the description of the invention are not described in order to avoid confusion in describing the invention.

1 is a perspective view showing a folded state of the safety claw assembly for an excavator according to the present invention, Figures 2 and 3 are a perspective view showing an operating state of the safety claw assembly for an excavator according to the present invention, Figure 4 is a supporter arm and , A middle arm is a perspective view showing a coupling relationship, and FIG. 5 is a plan view showing a supporter arm, a middle arm, and a safety pin in FIG. 4.

As shown in Figures 1 to 5, the present invention, when not using the claws, by folding the claws up close contact with the boom to be partially overlapped to minimize the interference by the surrounding obstacle during the excavation work, and also to the boom Safety pins are provided in the lower part of the middle arm to prevent the pinched claws from spreading, wherein the safety pins are pressed against the outer surface of the claws adhered to the boom to prevent sagging or opening due to the self-load of the claws. It relates to a safety claw assembly (100).

Safety nipper assembly 100 for an excavator of the present invention is composed of a hydraulic cylinder (11), a pair of supporter arms (20), tongs (30) and the middle arm (40).

The hydraulic cylinder 11 is for driving the tongs 30 is hinged to the first bracket 12 fixed to the boom 10 of the excavator.

Each supporter arm 20 is divided into two hinges to the second bracket 13 fixed to the lower portion of the boom 10, and the hydraulic cylinder 11 in the central region so as to be pivoted around the hinge coupling portion. The rod 111 of the link is connected through the first link connecting portion (50a).

The claw 30 has a width that is relatively larger than the width of the boom 10, and is configured by branching two connection arms 311 hinged to both lower sides of the boom 10.

The tongs 30 is composed of a pair of side frames 31 which are integrally coupled with the connection arm 311, and a connection frame 32 which is integrally connected to the respective side frames 31.

At this time, the side frame 31 is coupled to protrude in the inward direction of the claw 30 is configured to have a height difference with the connecting frame 32.

Therefore, when the claws 30 are folded upward and closely adhered to the boom 10, the side frames 31 are closely adhered to the side of the boom as closely as possible, thereby minimizing interference of peripheral obstacles caused by the claws 30 during the excavation work. Can be.

The middle arm 40 is interlocked with the supporter arm 20 so that one side of the supporter arm 20 can be rotated by a link between the end of the supporter arm 20 and the second link connecting portion 50b, and the other side of the forceps foot. 30 and the third link connecting portion (50c) is connected via the link.

The middle arm 40 has an upwardly curved portion 41 and a downwardly curved portion 42 formed continuously, and an end portion of the upwardly curved portion 41 is an end portion of the supporter arm 20 via the second link connecting portion 50b. Linked with, the end of the downward curved portion 42 is linked to the claws 30 via the third link connecting portion (50c).

In addition, when the middle arm 40 is unfolded, the upward curved portion 41 can avoid the interference of the boom 10 so that the claw 30 can be engaged with the bucket (not shown) of the excavator as much as possible, and the middle arm 40 ) Is pulled up, the upper curved portion 41 is configured to be as close as possible to one side of the boom 10 to fold the nipper 30 to the boom 10 as much as possible (shown in Figures 6 and 8).

In addition, as shown in FIG. 5, the supporter arm 20 extends upwardly in a 45 ° direction with respect to the horizontal portion 21 closely contacting one surface of the boom 10 and the horizontal portion 21 when the forceps are folded upward. And an extension 22 spaced apart.

At this time, the end of the horizontal portion 21 is hinged to the second bracket 13, the first link connecting portion (50a) is connected between the horizontal portion 21 and the extension portion 22, the extension portion 22 The second link connecting portion 50b connected to the upwardly curved portion 41 of the middle arm 40 is connected to the end of the second arm 40.

This supporter arm 20, as shown in Figure 1, when the claw 30 is folded upward, the horizontal portion 21 is in close contact with one surface of the boom 10, the mall extension portion 22 is the middle arm 40 It is prepared to pull as much as possible to one side of the boom.

In addition, the supporter arm 20 has the middle arm 40 and the claws when the boom 10 is placed vertically in a state where the claws 30 are folded, since the extension part 22 is disposed at the 12 o'clock direction. It is possible to provide a structure capable of stably fixing the tongs 30 by minimizing the load of the tongs 30 received by the safety pin 422 to be described below by maintaining 30) in a suspended state.

On the other hand, the connecting frame 32 and the long hole 321 along the longitudinal direction so as not to interfere with the supporter arm 20, the middle arm 40 and the hydraulic cylinder 11 when the claw 30 is folded upward A relatively small sized mounting hole 322 communicating with the long hole 321 is formed.

At this time, when the forefinger 30 rotates counterclockwise to the downward curved portion 42 of the middle arm 40, a safety pin 422 entering the long hole 321 is further coupled, and the safety pin 422 is a forefinger ( When 30) is completely folded is mounted in the state entered into the mounting hole 322 in communication with the long hole 321 is configured to be stably fixed to the folded claw 30 without sagging.

More specifically, when the claw 30 is folded, the downward curved portion 42 of the middle arm 40 is located in the mounting hole 322, the safety pin 422 is the outer surface of the claw 30 The tongs 30 in close contact with the boom 10 by being mounted to the mounting hole 322 is provided with a structure that can be stably fixed.

Here, the downward curved portion 42 of the middle arm 40 is formed with a plurality of coupling holes 421 protruding upwards so as to couple the two safety pins 422 at a predetermined interval to double the claw 30. A structure that can be fixed securely is provided.

In addition, the safety pin 422 is shown in Figures 4 and 5, is divided into two starting from the center and inserted into each other, a plurality of pin holes (422a) is formed in the insertion portion mounting hole 322 It is configured to adjust the length according to the width of the.

Hereinafter will be described briefly with respect to the operation of the safety nipper assembly for excavators according to the present invention.

6 to 8 is a perspective view of the safety claw assembly for an excavator according to the present invention.

As shown in FIG. 6, when the rod 111 of the hydraulic cylinder 11 is unfolded, the supporter arm 20 is rotated clockwise to be in parallel with the boom 10, and the rod 111 is the supporter arm 20. It is located between the two pins of, so it is stable and shows strong force.

Then, the unfolded middle arm 40, the upward curved portion 41 can avoid the end interference of the boom 10, the claw 30 can be engaged with the bucket (not shown) of the excavator as much as possible to avoid the interference bucket bucket It can be engaged with (not shown) as much as possible.

As shown in FIG. 7, when the rod 111 of the hydraulic cylinder 11 is retracted, the supporter arm 20 is rotated counterclockwise, and the middle arm 40 connected to the supporter arm 20 is the tongs 30 ) And the third link connecting portion 50c coupled to the link may rotate the nippers 30 counterclockwise.

At this time, when the claw 30 is not used, the claw 30 is folded to the boom 10 as shown in FIG. 8 so that there is no interference of the claw 30 in the excavation work, at this time the hydraulic cylinder (11) When the rod 111 is maximally drawn in, the supporter arm 20 has a horizontal portion 21 closely adhered to one surface of the boom 10, and the mall extension portion 22 booms the middle arm 40. A state can be drawn to one side of 10) as much as possible.

Then, the claws 30 rotated counterclockwise by interlocking with the middle arm 40 are closely contacted with each other so that the side frame 31 partially overlaps to the side of the boom 10, and thus, the claws 30 during the excavation work Provide a structure to minimize the interference of obstacles.

And the safety pin 422 coupled to the downwardly curved portion 42 of the middle arm 40 is in the state entered into the mounting hole 322 in communication with the long hole 321 formed in the connecting frame 32 of the claw 30 By being mounted on the outer surface mounting hole 322 of the 30 to separate the claws 30 to the device or the subsequent work without the subsequent work so that the claws 10 in close contact with the boom 10 can be fixed quickly (See FIGS. 1,2 and 3)

In addition, as shown in FIG. 8, when the boom 10 is placed vertically in a state where the claw 30 is folded, the middle arm 40 is disposed because the extension part 22 of the supporter arm 20 is disposed at 12 o'clock. ) And the tongs 30 are kept in a suspended state to minimize the load of the tongs 30 received by the safety pin 422 so that the tongs 30 can be more stably fixed.

Configurations shown in the embodiments and drawings described herein are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be variations and examples.

10: boom 11: hydraulic cylinder 111: rod
12: First Bracket 13: Second Bracket
20: supporter arm 21: horizontal portion 22: extension portion
30: claw 31: side frame 311: connecting arm
32: connecting frame 321: long hole
322: hole
40: middle arm 41: upward curved portion 42: downward curved portion
421: coupling hole 422: safety pin
422a: pinhole
50a: first link connecting portion 50b; Second link connector 50c: Third link connector
100: safety claw assembly for excavator

Claims (5)

In the excavator claw assembly coupled to the boom one side of the excavator,
A hydraulic cylinder 11 hinged to the first bracket 12 fixed to the upper portion of the boom 10;
The rod 111 and the first link connecting portion of the hydraulic cylinder 11 are hinged to the second bracket 13 fixed to the lower portion of the boom 10 and pivoted around the hinge coupling portion. A pair of supporter arms 20 coupled via 50a);
Nipper claw 30 having a width larger than the width of the boom 10, the two claws 30 are hinged to both sides of the lower side of the boom 10 is branched; And
One side is linked through the end of the supporter arm 20 and the second link connecting portion 50b so as to rotate the nippers 30 in cooperation with the supporter arm 20, and the other side is the nippers 30. And a middle arm 40 which is linked through a third link connecting portion 50c as a medium.
The claw 30 is composed of a pair of side frames 31 which are integrally coupled to the connection arm 311, and a connection frame 32 which is integrally connected to each side frame 31,
The connecting frame 32 has a long hole 321 and the long hole 321 along the longitudinal direction so as not to interfere with the supporter arm 20, the middle arm 40 and the hydraulic cylinder 11 when the claw 30 is folded up ) Is further formed with a relatively small size of the mounting hole 322,
The middle arm 40 is further coupled to the safety pin 422 entering the long hole 321 when rotated in the counterclockwise direction, the safety pin 422 through the long hole 321 when folded of the claw 30 The safety nipper assembly for an excavator, characterized in that it is mounted to the outer surface mounting hole (322) of 30) to be stably fixed to the claw (30) in close contact with the boom (10).
The method of claim 1,
Each side frame 31 of the tongs 30 is coupled to protrude in the inner direction of the tongs 30 is configured to have a height difference with the connecting frame 32,
Each side frame 31 is securely clamping assembly for an excavator, characterized in that the close contact with the frame to the side of the boom (10) by the difference in height.
The method of claim 1,
The supporter arm 20 has a horizontal portion 21 closely contacted with one surface of the boom 10 when the claw 30 is folded upward, and is extended upwardly in a 45 ° direction with respect to the horizontal portion 21 and spaced apart from the horizontal portion 21. Consisting of an extension 22,
The extension part 22 is located at 12 o'clock when the claws 30 are folded, thereby minimizing the load of the claws 30 received by the safety pin 422 by keeping the middle arm 40 and the claws 30 suspended. Safety tongs assembly for an excavator, characterized in that to function to be stably fixed to the claws (30).
The method of claim 1,
The middle arm 40 is formed with a continuous upward curved portion 41 and the downward curved portion 42,
The downwardly curved portion 42 is formed with a plurality of coupling holes 421 protruding upward so as to couple the two safety pins 422 at a predetermined interval, so that the claws 30 can be securely fixed in duplicate. Safety claw assembly for excavators, characterized in that.
The method of claim 1,
The safety pins 422 are separated into two from the center and inserted into each other, and a plurality of pinholes 422a are formed in the insertion portion to be configured to adjust the length according to the width of the mounting hole 322. Safety claw assembly for excavators characterized in that.

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