JP3356409B2 - Link device and work machine using the link device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a link device for a working machine, which makes it possible to replace a working machine such as a fork claw, bucket, squib, or cutter device very easily and easily. The present invention relates to a working machine using a computer.

[0002]

2. Description of the Related Art In general, for example, a power shovel for excavating work can scoop up earth and sand with a bucket but cannot perform a gripping operation. Further, with a fork claw, it is difficult to perform an excavation operation, a crushing operation, a cutting operation, etc., even if the operation can be grasped.

[0003]

Therefore, a conventional power shovel has been proposed in which a work machine such as a fork claw or a bucket can be replaced. However, the replacement requires a complicated procedure. is there. That is, in the conventional case, it takes a long time to replace a gripping fork, a bucket, or the like, which is troublesome and has low work efficiency.

Therefore, in the case of the conventional example,
There is a problem that needs to be solved in order to easily and easily exchange work equipment such as fork claws and buckets.

[0005]

As a specific means for solving the problems of the prior art, the present invention relates to an arm for a construction machine or the like.
(10) A link device the working machine to the tip is mounted to be opened and closed in (1), the link device (1), the upper member of the working machine (15) two pins (13) (14) rod of the hydraulic cylinder for opening and closing operation in preparative <br/> Ri with attached bracket (22) is connected (25) and said one end is said bracket (25) two pins (13)
Bound in (14), peak to lower member of the other end working machine (11)
A first link member (12) connected by a pin (19) ;
A link device characterized in that one end is connected to a bracket (25) and the other end is composed of a second link member (16) connected to the arm (10) .

The present invention also relates to an arm (1) for a construction machine or the like.
0) , wherein the upper member (15) of the working machine has two pins (13) (1).
The bracket (2 ) to which the rod part (22) of the hydraulic cylinder that is attached in 4) and performs the opening and closing operation is connected.
5) and one end of the two pins on the bracket (25).
(13) The other end is connected by the lower member (1)
1) a first link member (1 ) connected to the first link member (1 ) by a pin (19).
2) and a second link member (1 ) having one end connected to the bracket (25) and the other end connected to the arm (10).
6) using the link device (1) comprising:
The base of (11) is rotatably attached to the tip of the arm (10) and the second link member (16).
The other end of the lower member is rotatably mounted on the arm (10) behind the mounting position of the lower member (11).
It is an object of the present invention to provide a working machine characterized in that the upper member (15) and the lower member (11) are openably and closably mounted around a mounting portion between the (11) and the arm (10) .

[0007] The upper member (15) and the lower member (11) of the working machine are configured to be replaceable with a fork claw, a bucket, a squeeze bucket or a cutter device depending on the use.

In the link device according to the present invention and the working machine using the link device, the working machine can be easily replaced by removing the pins attached to the first link member and the second link member. For example, replacement of fork pawls, buckets, screen buckets, cutter devices, and the like can be performed very easily and easily.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. First, in FIGS. 1 and 2, reference numeral 1 denotes a link device to which a fork claw (working machine) is attached.
A first link member 12 rotatably attached to a part of the lower pawl 1 (lower member) and fixed to a base end of an upper pawl 15 (upper member) with two pins 13 and 14; 15 and a bracket 25 attached to the base end of the bracket 15.
5 and a second link member 16 for connecting the vicinity of the tip of the arm 10 of the construction machine or the like.

As shown in FIG. 3, a pair of first link members 12 are provided, and pin holes 12d, 1d are provided at one end thereof.
2c are formed, and a pin hole 12 is formed in the other end.
b are formed respectively.

The lower claw 11 is rotatably supported at the tip of the arm 10 by a pin 17. A pin hole 18 is formed at the base end of the lower claw 11, and a pin 19 is inserted into the pin hole 18 and connected to the pin hole 12 b of the first link member 12, whereby a lower hole is formed. The base end of the claw 11 and the other end of the first link member 12 are rotatably connected.

One end of the first link member 12 is attached and fixed to the base end of the upper claw 15. That is, the pins 13 and 14 are inserted into the pin holes 1 of the first link member 12.
2c and 12d to connect one end of the first link member 12 to the base end of the upper claw 15. That is, the lower claw 11
And the base end of the upper claw 15 are connected to the first link member 1.
It is connected through two.

Further, a bracket 25 is fixed to the base end of the upper claw 15 by the pins 13 and 14. As shown in FIG. 3, the bracket 25 has a substantially triangular side surface, and is provided in a pair via a connecting portion 25c. The bracket 25 has pin holes 20, 25a, 25b. The pins 14, 13 are inserted into the pin holes 25a, 25b, respectively, so that the base end of the upper claw 15 and the bracket 25 are fixed. ing.

As shown in FIG. 3, a pair of second link members 16 are provided, each having a pin hole 16b at one end and a pin hole 16a at the other end. I have.

Then, the pin hole 20 of the bracket 25
The second link member 16 is mounted between the arm 10 and a pin hole 21 formed in the vicinity 10a of the tip of the arm 10, thereby connecting the bracket 25 and the vicinity 10a of the tip of the arm 10 with each other. Further, the rod portion 22 of the hydraulic cylinder is connected to a shaft 23 fitted in the pin hole 20, and the lower claw 11 and the upper claw 15 are driven to open and close by operating the hydraulic cylinder.

Next, a method of attaching the fork pawl to the link device 1 configured as described above will be described. First, a lower claw 11 is attached to the tip of an arm 10 of a construction machine or the like.
Is rotatably mounted with a pin 17. And lower nail 11
The pivot end 12a of the first link member 12 is rotatably attached to the base end of the first link member 12 with a pin 19. Further, one end side of the first link member 12 is attached and fixed to the base end of the upper claw 15 with the pins 13 and 14. In addition, the bracket 25 also has the pin 1
At 3 and 14, they are attached to the base end of the upper claw 15.

The other end of the second link member 16 is connected to a pin hole 21 formed near the tip of the arm 10, and one end of the second link member 16 is attached to the upper claw 15. It is pin-connected to a pin hole 20 formed in a bracket 25. The tip of the rod portion 22 of the hydraulic cylinder of the construction machine or the like is connected to the pin hole 2 of the bracket 25.
It is connected to the shaft engaged with 0. Therefore, the opening and closing drive of the lower pawl 11 and the upper pawl 15 can be performed by operating the hydraulic cylinder. Also, the four pins 13,
By removing 14, 17, and 19, the fork claws can be replaced with another working machine.

Next, as a second embodiment of the present invention, as shown in FIG.
Is attached to the link device 1. In the case of the second embodiment, the main bucket 24 rotatably mounted on the tip of the arm 10 and the first link member 12 rotatably mounted on a part of the main bucket 24.
And two pins 13, 14 on the first link member 12.
And an upper claw 15 attached to the first arm member 12 so as to be rotatable around a rotation end of the first arm member 12, a pin 13 near the distal end of the arm 10, and a base end of the upper claw 15; 14
And a second link member 16 for connecting the bracket 25 fixed with the second link member. By removing the four pins 13, 14, 17, and 19 as described above, the upper pawl 15 and the main bucket 24 can be exchanged for another working machine.

In such a configuration, the bucket 2
5 enables excavation work and can be used as a gripping fork for demolition work of a wooden house. still,
It is a matter of course that the main bucket 24 may be attached downward instead of the upper claw 15, and the main bucket 24 and the lower claw 11 may be provided at the upper portion (not shown).

Next, as a third embodiment of the present invention, as shown in FIGS. 5 and 6, a case will be described in which a fluid bucket 26 is attached to the link device 1 instead of the upper claws 15 and the lower claws 11 described above. I do. In the case of the third embodiment, a fluid bucket lower portion 26a rotatably attached to the tip of the arm 10, a first link member 12 pivotally attached to a part of the fluid bucket lower portion 26a, An upper portion 26b of a squib bucket fixed to the first link member 12 with two pins 13 and 14 and rotatably mounted around a rotation end of the first arm member 12; Near the tip of the buckle and the upper part of the squeeze bucket 26b
25 fixed to the base end of the bracket by pins 13 and 14
And a second link member 16 connecting the two. Then, as described above, the four pins 13, 14, 1
By removing 7, 19, the upper bucket 26b and the lower bucket 26a can be exchanged for another working machine.

Next, as a fourth embodiment of the present invention, a description will be given of a case where a cutter device 27 is attached to the link device 1 instead of the upper claws 15 and the lower claws 11, as shown in FIGS. I do. In the case of the fourth embodiment, a cutter lower portion 27a rotatably attached to the tip of the arm 10 is used.
A first link member 12 rotatably attached to a part of the cutter lower portion 27a; and the first arm 12 fixed to the first link member 12 with two pins 13 and 14, A cutter upper portion 27b rotatably mounted around a rotary end of the member 12, a vicinity of the distal end of the arm 10, and a bracket 25 fixed to the base end portion of the cutter upper portion 27b with pins 13 and 14. And a second link member 16. And, as mentioned above,
By removing the pins 13, 14, 17, and 19, the cutter upper portion 27b and the cutter lower portion 27a can be exchanged for another working machine.

[0022]

As described above, the link device according to the present invention is a link device (1) in which a working machine is openably and closably attached to the tip of an arm (10) of a construction machine or the like.
The link device (1 ) has two upper members (15) of a working machine.
A bracket (25) to which a rod portion (22) of a hydraulic cylinder that is attached by pins (13) and (14) and that opens and closes is connected, and one end of the bracket (25)
The bonded with two pins (13) (14), first the other end connected by a pin (19) to the lower member of the working machine (11)
A link member (12), one end of which is connected to the bracket (25), a second other end of which is connected to the arm (10)
Since the working member attached to the link device can be easily and easily replaced by the link member (16) , it is extremely easy to replace, for example, a fork claw, a bucket, a fruit bucket, or a cutter device. It has an excellent effect that it can be performed.

Further, the working machine according to the present invention is a working machine attached to the tip of an arm (10) of a construction machine or the like, wherein the working machine has an upper member (15) having two pins.
(13) (14) and brackets (25) the rod of the hydraulic cylinder for opening and closing operation with attached (22) is connected with said one end is the bracket (25)
A first link member (12) connected by two pins (13) and (14) and the other end is connected to a lower member (11) of the work machine by a pin (19), and one end is connected to a bracket (25) . Using a link device (1) including a second link member (16) connected to the arm (10) and the other end connected to the arm (10) , the base side of the lower member (11) is connected to the tip of the arm (10) . To the second link member (1).
Rotatably attached to the arm (10) in the rear side of the other end of 6) attachment position of the lower member (11), said upper member mounting portion of the lower member (11) and the arm (10) as a fulcrum (15) and the lower member (11) are openably and closably incorporated, and the upper member (15) and the lower member (11) of the working machine are provided with fork claws, buckets,
The work machine can be easily replaced by removing the pins attached to the first link member and the second link member, respectively, because the work machine can be replaced with a fluid bucket or a cutter device. , A bucket, or a cutter device can be easily and easily replaced.

[Brief description of the drawings]

FIG. 1 is a side view showing a link device according to the present invention and a working machine using the link device.

FIG. 2 is a plan view showing a link device according to the present invention and a working machine using the link device.

FIG. 3 is a perspective view showing a state where the link device according to the present invention is separated.

FIG. 4 is a side view showing a state where a bucket is attached to the link device according to the present invention.

FIG. 5 is a side view showing a state in which a bucket is attached to the link device according to the present invention.

FIG. 6 is a plan view showing a state in which a bucket is attached to the link device according to the present invention.

FIG. 7 is a side view showing a state where a cutter device is attached to the link device according to the present invention.

FIG. 8 is a plan view showing a state in which a cutter device is attached to the link device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Working machine link device 10 Arm 11 Lower claw (lower member) 12 First link member 12a Rotating end 12b Pin hole 12c Pin hole 12d Pin hole 13 Pin 14 Pin 15 Upper claw (upper member) 16 Second link Member 16a Pin hole 16b Pin hole 17 Pin 18 Pin hole 19 Pin 20 Pin hole 21 Pin hole 22 Rod part 23 Shaft 24 Main bucket (lower member) 25 Bracket 25a Pin hole 25b Pin hole 25c Connecting part 26 Fluke bucket 26a Lower bucket 26a (Lower member) 26b Upper bucket (upper member) 27 Cutter device 27a Lower cutter (lower member) 27b Upper cutter (upper member)

Claims (3)

(57) [Claims] 1. A link device (1) in which a working machine is openably and closably attached to a tip of an arm (10) of a construction machine or the like, wherein the link device (1) includes an upper member (15) of the working machine. Two
Pin (13) a rod of the hydraulic cylinder for opening and closing operations with mounted at (14) (22) bracket is connected (25) and said one end is said bracket (25) two pins (13)
Bound in (14), peak to lower member of the other end working machine (11)
A first link member (12) connected by an arm (19), and a second link member (16) connected at one end to the bracket (25) and at the other end to the arm (10). A link device, comprising: 2. A working machine attached to the tip of an arm (10) of a construction machine, wherein the working machine has an upper member (15) having two pins (1).
3) (the bracket (25) the rod of the hydraulic cylinder for opening and closing operation with attached (22) is connected at 14), the two on one end the bracket (25)
And the other end is the lower member of the working machine.
First link member connected to pin (19 ) by pin (19)
(12) a second link member having one end connected to the bracket (25) and the other end connected to the arm (10);
(16) consisting of a linkage with (1), the base side is attached rotatably to the tip of the arm (10) of the lower member (11), the other of said second link member (16) rotatably attached to the arm (10) also in the rear side of the attachment position of the lower member end (11), wherein the fulcrum attachment portion of the lower member (11) and the arm (10) the upper member (15) A work machine characterized in that a lower member (11) is openably and closably incorporated. 3. An upper member (15) and a lower member (1 ) of a working machine.
The work machine according to claim 2, wherein 1) is replaceable with a fork claw, a bucket, a squeeze bucket, or a cutter device depending on the application.