KR101353244B1 - An excavator having removable forefinger - Google Patents

Abstract

The present invention relates to a detachable finger apparatus for an excavator. The detachable finger apparatus for an excavator comprises: a boom (10) having an opening (11) at the upper part of the rear and a first fixed hook (12) fixated under the opening (11); a first attachment fixing unit (20) which is installed inside the boom (10) and includes a first attachable hook (24) which is moved to a position corresponding to the opening (11) and a first hydraulic operation unit (25) which operates the first attachable hook (24); a bracket (30) which is installed at the end of the boom (10) and has a second fixed hook (32) protruding from the bottom and pointing backwards; a second attachment fixing unit (40) which is installed in the bracket (30) and includes a second attachable hook (44) which is moved to the opposite side of the second fixed hook (32) and a second hydraulic operation unit (45) which operates the second attachable hook (44); a first finger body (50) having a first catch (52) which is hung on the first fixed hook (12) and a second catch (54) which is hung on a first attachable hook (24); and a second finger body (60) having a third catch (62) which is hung on the second fixed hook (32) and a fourth catch (64) which is hung on the second attachable hook (44).

Description

Removable tong device for excavators {An excavator having removable forefinger}

The present invention relates to a detachable tong device for an excavator, and more particularly to a detachable tong device for an excavator that can be attached and detached without using a manpower.

In general, an excavator is provided with a boom, a basket which is rotatably installed at the end of the boom in a vertical direction, and a hydraulic cylinder connected to the boom and the basket to operate the boom and the basket so as to dig or pick the ground. Can be.

However, the use of such excavators often carry specific objects such as stone (border stone, landscape stone, etc.) or large timbers, which are not suitable for effectively carrying a specific object using a basket.

In order to solve this problem, the prior art for achieving the object for transportation by integrating the forceps in the basket is disclosed in Utility Model Registration No. 20-0456465.

1 is a view for explaining an excavator integrated with a forceps device. As shown in the drawing, the conventional excavator includes a boom 2 jointed to the main boom 1, a basket 3 rotatably installed at an end of the boom 2 in a vertical direction, and the main boom 1. ) Is connected between the boom stand 2 and the first hydraulic cylinder (4) to operate the boom 2, and the second hydraulic cylinder connected between the boom 2 and the basket (3) to operate the basket (3) (5), the bracket (6) installed at the end of the boom (2), and detachably installed on the bracket (6) and meshes with the basket (3) during the rotation of the basket (3) to a specific object such as stone or wood It includes a forceps (7) to lift the. By this structure, by adjusting the basket 3 so that the wood or stone is sandwiched between the basket (3) and the tongs (7) to lift the wood or stone, it is possible to move in the lifted state.

By the way, in the case of the above-mentioned excavator, in order to install or remove the tongs 7 to the bracket 6, the operator removes pins (not shown) or bolts for coupling the tongs 7 to the bracket 6, Since then, tongs (7) weighing 70 ~ 80 kg had to be lifted or transported. For this reason, a lot of power is taken in the detachment process, and the risk of injury coexists in the process of lifting or transporting the heavy-weight tongs 7.

In addition, since the heavyweight forceps 7 are integrated with the basket 3, a lot of loads are always applied to the boom 2, so that the second hydraulic cylinder 5 withstands when moving stones, a chest tube, a large tree, and the like. It was a cause of failure. In addition, the fuel economy is worse, there is a problem that a lot of pain is applied to the wrist when the operation is applied to the joystick lever when operating in the cab.

The present invention was created in order to solve the above problems, it is possible to remove the very easy because the manpower is not required in the process of detaching the first and second tongs body, it is possible to exclude the risk of accident in the detachment process An object of the present invention is to provide a removable tong device for an excavator.

Another object of the present invention is to provide a removable tongs device for an excavator capable of carrying a heavy object.

In order to achieve the above object, the removable tongs for excavator according to the present invention, the opening groove 11 formed in the upper rear side and the first fixing hook 12 fixed to the lower side of the opening groove (11). Branch boom 10; A first hydraulic operation unit 25 installed inside the boom 10 to operate the first attachment and detachment hook 24 and the first attachment and detachment hook 24, which are transported to a position corresponding to the opening groove 11. A first attachment and detachment fixing unit 20 having a); A bracket 30 installed at the end of the boom 10 and having a second fixing hook 32 protruding toward the rear end; As installed on the bracket 30, the second attachment and detachment hook 44 and the second hydraulic operation unit 45 for operating the second attachment and detachment hook 44 to the opposite side of the second fixed hook (32) A second attachment and detachment fixing part 40 having a); A first tong body (50) having a first hook end (52) hooked to the first fixing hook (12) and a second hook end (54) hooked to the first detachable hook (24); And a second tong body 60 having a third hook end 62 hooked to the second fixing hook 32 and a fourth hook end 64 hooked to the second detachable hook 44. Characterized in that.

In the present invention, the first fixed hook 12 is composed of a bent hook end 12a formed on the upper side and a guide end 12b formed on the lower side, wherein the guide end 12b is the ring. It extends behind the stage 12a.

In the present invention, the first hydraulic actuating portion 25, the first cylinder body 25b which is hinged to the inside of the boom 10 by a first fixed shaft 25a, and the first cylinder body ( A first cylinder rod (25c) mounted on the first detachable hook (24) side at 25b); The first detachable hook 24 includes a first hook body 24c having a first rotational shaft 24a and a first coupling shaft 24b spaced apart from each other, and a ring extending from the first hook body 24c. A first hook end 24d in the form; The first rotation shaft 24a is hinged to a predetermined portion of the boom 10, and the first coupling shaft 24b is hinged to the first cylinder rod 25c.

In the present invention, the second hydraulic actuator 45, the second cylinder body 45b which is hinged by the second fixed shaft 45a inside the bracket 30, and the second cylinder body ( 45b) a second cylinder rod (45c) to be mounted on the second detachable hook (44) side; The second detachable hook 44 includes a second hook body 44c having a second rotational shaft 44a and a second coupling shaft 44b spaced apart from each other, and a ring extending from the second hook body 44c. A second hook end 44d in the form; The second rotation shaft 44a is hinged to a predetermined portion of the bracket 30, and the second coupling shaft 44b is hinged to the second cylinder rod 45c.

In the present invention, the first tong body 50, the first coupling end (50a) is formed with a flat contact surface 50a 'is in close contact with the rear side of the boom 10, the first coupling A first body end 50b extending from the end 50a to pick up a specific object; The first and second hook ends 52 and 54 are formed on the contact surface 50a '. In this case, the second hook end 54 passes through the opening groove 11 to be coupled to the first hook end 24d positioned inside the boom 10. It is formed in the protruding bracket 55 protruding toward the opening groove (11).

According to the present invention, the first detachable fixing unit installed on the boom, the second detachable fixing unit installed on the bracket, the first clip body fixed to the boom by the first detachable fixing unit, and the second detachable detachment By employing a second tong body that is automatically fixed to the bracket by the government, no manpower is required in the process of fixing the first and second tong body to the boom and the bracket. Accordingly, it is not necessary to lift or transport the first and second tongs bodies in order to attach or detach the first and second tongs bodies to the boom stand and the brackets, thereby eliminating the risk of injury at all.

In addition, since the contact surface of the first coupling end is fixed to the rear side of the boom in the first tongs body, the load applied to the first tongs body is supported on the rear side of the boom, so that the first and second tongs are heavy. It can support a large load applied when lifting it.

In addition, since the first and second tongs are installed in the absence of a basket, the load applied to the boom is not so large that the second hydraulic cylinder can withstand the movement of stones, chest tubes, and large trees. The joystick levers operated in the jersey are soft, and even if operated for a long time, the wrists can be prevented from getting overwhelmed.

1 is a view for explaining a conventional excavator in which the forceps are integrated;
Figure 2 is a view for explaining the configuration of the removable tongs for excavators according to the present invention,
3 is a view for explaining the first and second detachable fixing parts installed in the boom and the bracket of FIG.
4 is a view for explaining and extracting the first fixed hook formed on the boom of FIG.
5 is a view for explaining and extracting the first and second detachable hook of FIG.
6 is a view for explaining the operation of the first and second detachable fixing part of FIG.
7A to 7J are photographs illustrating an operating situation of the detachable tongs device of the excavator of FIG. 2.

Hereinafter, with reference to the accompanying drawings, a removable tongs device for an excavator according to the present invention will be described in detail.

Figure 2 is a view for explaining the configuration of the removable tongs for excavator according to the invention, Figure 3 is a view for explaining the first and second removable fixing parts installed in the boom and bracket of Figure 2, Figure 4 3 is a view for explaining and extracting the first fixed hook formed on the boom of Figure 3, Figure 5 is a view for explaining and extracting the first, second detachable hook of FIG. 6 is a view for explaining the operation of the first and second detachable fixing part of FIG.

As shown, the removable tong device for an excavator according to the present invention, which is articulated to the main boom (not shown) installed in the excavator body is operated by the hydraulic cylinder (C), the opening groove 11 formed on the upper rear side ) And a boom 10 having a first fixing hook 12 fixed to the lower side of the opening groove 11; It is installed inside the boom stand 10 and has a first attachment and detachment hook 24 and a first hydraulic operation unit 25 for operating the first attachment and detachment hook 24, the transfer operation to a position corresponding to the opening groove 11 A first attachment and detachment fixing unit 20; A bracket 30 installed at an end of the boom 10 and having a second fixing hook 32 protruding toward the rear end; It is installed on the bracket 30, and has a second attachment and detachment hook 44 and the second hydraulic operation unit 45 for operating the second attachment and detachment hook 44 to the opposite side of the second fixed hook (32) A second detachable fixing part 40; A first tong body (50) having a first hook end (52) hooked to the first fixing hook (12) and a second hook end (54) hooked to the first attachment / detachment hook (24); And a second clip body (60) having a third hook end (62) hooked to the second fixing hook (32) and a fourth hook end (64) hooked to the second attachment and detachment hook (44). It is done.

The boom 10 is moved up and down by the main boom and the hydraulic cylinder (C) is installed on the excavator body, the first fixed hook 12 is fixed to the lower rear side.

As shown in FIG. 4, the first fixing hook 12 includes a bent ring end 12a formed on the upper side and a guide end 12b formed on the lower side. It extends to the rear side than the ring end 12a. Accordingly, the first hook end 52 of the first tongs body 50 to be described later is guided by the guide end 12b and guided into the ring end 12a.

The first attachment / detachment fixing unit 20 is for fixing the first tong body 50 hooked on the first fixing hook 12 to the rear side of the boom 10. As shown in FIG. 2, the first attachment / detachment fixing part 20 has an opening groove 11 having a first attachment / detachment hook 24 operated by a first hydraulic operation unit 25 installed inside the boom 10. By fixing the second hook end 54 of the first tongs body (50) sandwiched through), the first tongs body 50 is fixed to the rear side of the boom 10.

To this end, the first hydraulic actuator 25 has a first cylinder body 25b hinged to the inside of the boom 10 by a first fixed shaft 25a, and a first attachment / detach hook from the first cylinder body 25b. It consists of the 1st cylinder rod 25c which hangs out to the (24) side. The first hydraulic operation unit 25 is connected to the oil supply unit (not shown) of the excavator by the hose, the operator can operate the first hydraulic automatic unit 25 in the cab.

In addition, as illustrated in FIG. 5, the first detachable hook 24 may include a first hook body 24c and a first hook body 24 having a first rotating shaft 24a and a first coupling shaft 24b spaced apart from each other. And a first hook end 24d in the form of a ring extending at 24c). In this case, as shown in FIGS. 3 and 6, the first rotation shaft 24a is hinged to a predetermined portion of the boom 10, more specifically, the inner upper side of the boom 10, and the first coupling shaft 24b. The hinge is coupled to the first cylinder rod 25c of the first hydraulic actuating unit 25.

 With this structure, as shown in FIG. 6, as the first hydraulic actuator 25 is operated, the first cylinder rod 25c which is mounted on the first hydraulic actuator 25 may have a second hook body ( 24c) is rotated about the first rotary shaft 24a, whereby the first hook end 24d is connected to the second hook end 54 of the first tong body 50 introduced through the opening groove 11. Walked or separated.

In this embodiment, the hydraulic cylinder composed of the first cylinder body 25b and the first cylinder rod 25c is used to operate the first detachable hook 24, but it can be used as a hydraulic motor as well. to be.

The bracket 30 is connected to the hydraulic cylinder C and the link L at the lower end of the boom 10, and is rotated in the up and down direction at the end of the boom 10 according to the operation of the hydraulic cylinder C. Since the moving structure of the bracket 30 is a general technique applied to an excavator, a detailed description thereof will be omitted.

The second detachable fixing part 40 is for fixing the second tong body 60 hooked to the second fixing hook 32 to the lower side of the bracket 30. As shown in FIGS. 3 and 6, the second detachable fixing part 40 includes a second detachable hook 44 operated by a second hydraulic actuator 45 installed inside the bracket 30. By fixing the fourth hook end 64 of the two tongs body 60, the second tongs body 60 is fixed to the lower side of the bracket 30.

To this end, the second hydraulic actuator 45 has a second cylinder body 45b hinged to the inside of the bracket 30 by a second fixed shaft 45a and a second detachable hook from the second cylinder body 45b. It consists of the 2nd cylinder rod 45c which hangs out to the (44) side. The second hydraulic operation unit 45 is connected to the oil supply unit and the hose of the excavator, the operator can operate the second hydraulic automatic unit 45 in the cab.

In addition, as shown in FIG. 5, the second detachable hook 44 may include a second hook body 44c and a second hook body having a second rotary shaft 44a and a second coupling shaft 44b spaced apart from each other. And a second hook end 44d in the form of a ring extending from 44c). At this time, the second rotary shaft 44a is hinged to the predetermined portion of the bracket 30, the second coupling shaft 44b is hinged to the second cylinder rod 45c of the second hydraulic actuator.

With this structure, as shown in FIG. 6, as the second hydraulic actuator 45 is operated, the second cylinder rod 45c coming out of the second hydraulic actuator 45 may have a second hook body ( 24c) is rotated about the second rotary shaft 44a, whereby the second hook end 44d is hooked or separated from the fourth hook end 64 of the second tong body 60. FIG.

In this embodiment, the hydraulic cylinder composed of the second cylinder body 45b and the second cylinder rod 45c is used to operate the second detachable hook 44, but it can be used as a hydraulic motor as well. to be.

As shown in FIG. 2, the first tong body 50 is fixed to the rear side of the boom 10, and the first hook end 52 and the first attachment / detachment hook which are hooked to the first fixing hook 12 are attached. And a second hanger end (54) hooked on (24).

The first tongs body 50 extends from the first coupling end 50a and the first coupling end 50a on which the flat contact surface 50a ', which is closely attached to the rear side of the boom 10, is formed. It includes a first body end (50b) for picking up a specific object, wherein the first and second hook ends (52, 54) are formed on the contact surface (50a '). At this time, the second hook end 54 passes through the opening groove 11 to be coupled to the first hook end 24d positioned inside the boom 10, and thus, the opening groove 11 on the contact surface 50a '. It is formed on the protruding bracket 55 protruding to the side.

By this configuration, the second hook end 52 is hooked to the first fixing hook 12, and then the second hook end 54 enters the opening groove 11 and is hooked to the first detachable hook 24. As a result, the close contact surface 50a 'of the first engagement end is closely fixed to the rear side surface of the boom 10. Therefore, the load applied to the first tongs body 50 is supported at the rear side of the boom 10, and thus can support a large load to be applied to the first tongs body 50.

The second tongs body 60 is fixed to the lower side of the bracket 30, the fourth hook end 62 and the second hook hooked on the second fixing hook 32 and the second hooking hook 44 And a hook end 64. At this time, the second tong body 60 is composed of a second coupling end (60a) formed with the third and fourth hook ends (62, 64), and a second body end (60b) for picking up a specific object.

By this configuration, the third hook end 62 is hooked to the second fixing hook 32, and then the fourth hook end 64 is hooked to the second attaching and detaching hook 44, whereby the second tong body ( 60 is fixed to the bracket 30. At this time, since the coupling end 60a of the second tongs body 60 is closely attached to the bracket 30, it can support a large load applied to the second tongs body 60.

Next, the operation of the removable tongs for excavator of the present invention.

7A to 7J are photographs illustrating an operating situation of the removable tongs device of the excavator of FIG. 2.

As shown in FIG. 7A, the worker moves the boom 10 to hang the second hook end 62 of the second tong body 60 placed on the floor to the second fixing hook 32 formed on the bracket 30. When the boom 10 is slightly lifted up, the second hook end 62 is completely hooked to the second fixing hook 32.

Next, as shown in FIG. 7B, the bracket 30 is rotated in the direction of the arrow so that the second detachable hook 44 is hooked to the fourth hook end 64, and the second hydraulic pressure is as shown in FIG. 6. The operation part 45 is operated to transfer the second detachable hook 44 away from the second fixed hook 32. Then, the second tong body 60 is firmly fixed to the lower side of the bracket 30, as shown in Figure 7c.

Next, as shown in FIG. 7D, the second hook end 54 of the first tong body 50 placed on the floor is moved by the first fixing hook 12 and the boom 10 is lifted by moving the boom 10. The second hook stage 54 is completely hooked to the first fixing hook 12. After lifting the boom 10 further, the first tongs body 50 is completely lifted as shown in FIGS. 7E and 7F.

Next, as shown in FIG. 7G, the second hook end 52 is slowly rotated by slowly moving the second tong body 60 to be hooked to the first fixing hook 12. Enter into the opening groove (11).

Next, by operating the first hydraulic operation unit 25 to transfer the first detachable hook 24 away from the first fixed hook 12, the first detachable hook 24 enters the opening groove 11. One second hook end 52 is fixed. Then, as shown in Figure 7h, the coupling end (50a) of the first tongs body 50 is completely fixed to the rear side of the boom 10.

Next, by operating the hydraulic cylinder (C) by rotating the second tongs 60, the first tongs 50 and the second tongs body 60 can be opened or collapsed as shown in Figure 7i, Figure As with 7h, it is possible to lift a certain heavy object up to several hundred Kg.

As described above, the excavator detachable clamping device of the present invention includes a first attachment and detachment fixing unit 20 installed on the boom 10, a second attachment and detachment fixing unit 40 installed on the bracket 30, and a first attachment and detachment unit. The first tongs body 50 which is automatically fixed to the boom 10 by the fixing part 20, and the second tongs body 60 which is automatically fixed to the bracket 30 by the second attachment and detachment fixing part 40. By employing the operator, the operator manipulates the first and second attachment and detachment fixing parts 20 and 40 in the excavator cab to fix the first and second tong body 50 and 60 to the boom 10 and the bracket 30. You can. There is no need to lift or carry the first and second tongs 50 and 60 to detach the first and second tongs 50 and 60 to the boom 10 and the bracket 30. The risk of injury can be eliminated.

In addition, since the contact surface 50a 'of the first coupling end in the first tongs body 50 is fixed to the rear side of the boom 10, the load applied to the first tongs body 50 is the boom 10 It is supported at the rear side of the), and thus can support a large load applied when the first and second tong body 50, 60 lifts the heavy object.

In addition, since the first and second tong body 50, 60 is mounted in the absence of a basket, the load applied to the boom 10 is not large enough to withstand the hydraulic cylinder when moving stones, chest tubes, large trees, etc. In addition, the fuel efficiency is improved, and the joystick lever operated in the cab is soft, so that even if it is operated for a long time, the wrist can be prevented from being pushed, and the first and second tong bodies 50 and 50 can be smoothly operated, thereby improving work efficiency. Improves.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

10 ... boom 11 ... opening
12 ... first fixing hook 12a ... hook end
12b ... Guide Group 20 ... First Detachable Government
24 ... 1st removable hook 24a ... 1st rotating shaft
24b ... first coupling shaft 24c ... first hook body
24d ... first hook end 25 ... first hydraulic actuating part
25a ... 1st fixed shaft 25b ... 1st cylinder body
25c ... 1st cylinder rod 30 ... bracket
32 ... 2nd fixed hook 40 ... 2nd removal and fixing
44 ... 2nd removal hook 44a ... 2nd rotating shaft
44b ... second coupling shaft 44c ... second hook body
44d ... 2nd hook stage 45 ... 2nd hydraulic actuating part
45a ... 2nd fixed shaft 45b ... 2nd cylinder body
45c ... 2nd cylinder rod 50 ... 1st clamp body
52 ... the first hook stage 54 ... the second hook stage
60 ... second clip body 62 ... third hanger
64 ... fourth hook

Claims (6)

A boom having an opening groove 11 formed on an upper rear side and a first fixing hook 12 fixed to a lower side of the opening groove 11;
A first hydraulic operation unit 25 installed inside the boom 10 to operate the first attachment and detachment hook 24 and the first attachment and detachment hook 24, which are transported to a position corresponding to the opening groove 11. A first attachment and detachment fixing unit 20 having a);
A bracket 30 installed at the end of the boom 10 and having a second fixing hook 32 protruding toward the rear end;
As installed on the bracket 30, the second attachment and detachment hook 44 and the second hydraulic operation unit 45 for operating the second attachment and detachment hook 44 to the opposite side of the second fixed hook (32) A second attachment and detachment fixing part 40 having a);
A first tong body (50) having a first hook end (52) hooked to the first fixing hook (12) and a second hook end (54) hooked to the first detachable hook (24); And
And a second clip body (60) having a third hook end (62) hooked to the second fixing hook (32) and a fourth hook end (64) hooked to the second detachable hook (44). Removable forceps device for an excavator, characterized in that. The method of claim 1,
The first fixed hook 12 is composed of a bent end 12a formed on the upper side and a guide end 12b formed on the lower side, and the guide end 12b is more than the end 12a. Removable tongs for excavators, characterized in that extending to the rear side. The method of claim 1,
The first hydraulic actuator 25 may include a first cylinder body 25b hinged to the inside of the boom 10 by a first fixed shaft 25a and the first cylinder body 25b. A first cylinder rod 25c mounted on the first detachable hook 24;
The first detachable hook 24 includes a first hook body 24c having a first rotational shaft 24a and a first coupling shaft 24b spaced apart from each other, and a ring extending from the first hook body 24c. A first hook end 24d in the form;
The first rotary shaft 24a is hinged to a predetermined portion of the boom 10, and the first coupling shaft 24b is hinged and coupled to the first cylinder rod 25c, characterized in that the excavator. . The method of claim 1,
The second hydraulic actuator 45 may include a second cylinder body 45b hinged to the inside of the bracket 30 by a second fixed shaft 45a and the second cylinder body 45b. A second cylinder rod 45c mounted on the detachable hook 44 side;
The second detachable hook 44 includes a second hook body 44c having a second rotational shaft 44a and a second coupling shaft 44b spaced apart from each other, and a ring extending from the second hook body 44c. A second hook end 44d in the form;
The second rotating shaft 44a is hinged to a predetermined portion of the bracket 30, and the second coupling shaft 44b is hinged to the second cylinder rod 45c. . The method of claim 1,
The first tongs body 50 includes a first coupling end 50a having a flat contact surface 50a ', which is closely attached to the rear side of the boom 10, and the first coupling end 50a. A first body end 50b extending from the body to pick up a specific object;
The first and second hook ends (52) (54) are removable tongs for excavators, characterized in that formed on the contact surface (50a '). The method of claim 5,
The second hook end 54 passes through the opening groove 11 to be coupled to the first hook end 24d positioned inside the boom 10 so as to be open at the close contact surface 50a '. Removable tongs for excavators, characterized in that formed in the protruding bracket (55) protruding toward the groove (11).

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