JPH06272274A - Connector for construction work machine - Google Patents

Abstract

PURPOSE:To easily, rapidly and removably attach or detach various operative attachments such as a crusher, bucket, etc., to/from the tip of a boom of a construction vehicle having an operative boom of a hydraulic shovel or the like CONSTITUTION:A locking rod A1 energized by an elastic body 7 is constituted to be provided in a main connector body A. A lock releasing means C is composed of a locking connector plate 16 through which the locking rod A1 extends, a press swung plate 23 capable of being pressed from the lock head 2 side of the locking rod A1 in the lock releasing direction and an operative lever 24 interlocked with the press swung plate 23, and provided in a connected body B. The tip of the locking rod A1 is adapted to project to and extend through the connected body 6 side and elastivally combine therewith by the contact of the main connector body A with connected body B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention easily and quickly attaches or detaches various work attachments such as a crusher and a bucket to a boom tip of a construction vehicle having a work boom such as a hydraulic excavator. The invention relates to a connector for a construction work machine.

[0002]

2. Description of the Related Art Conventionally, a connecting tool has been used to attach or detach various work attachments such as a crusher and a bucket to a boom tip of a construction vehicle having a work boom such as a hydraulic excavator. ing.

As a main structure of the connecting tool, there are two members, a boom side connecting tool which is mounted on the tip end side of a boom for construction work, and an attachment side connecting tool which is mounted on an attachment side of a bucket, a crusher or the like. The boom-side connecting tool and the attachment-side connecting tool are composed of a shaft and a movable hook-shaped pawl that engages with the shaft,
By the operation on the boom side, the claw appropriately moves to engage with the shaft.

Many of the pawls are movable by a hydraulic cylinder or a spring, and the hydraulic cylinder is particularly linked to the boom side.

[0005]

Many of the above-mentioned connecting tools are
A claw is formed on either the boom-side connecting tool or the attachment-side connecting tool, and a shaft is provided on the other side, and the claw is locked to the shaft on the mating side. It is extremely difficult to confirm from the driver's seat of the construction vehicle to confirm whether or not the side coupling and the attachment side coupling are securely coupled, and a worker is required to confirm them. Become.

Further, as described above, when the movable claw and the shaft are locked, the locked state tends to be extremely loose, and therefore, the lock is extremely weak against vibration and shock, and the attachment during work is not easily attached. There is a good risk of getting out of the boom.

Further, there is also a type in which the above-mentioned claw is moved by a hydraulic mechanism. In this case, although a strong hydraulic connection is certainly possible, the entire device becomes complicated,
Therefore, not only is it extremely expensive, but there is an inconvenient problem in that if the hydraulic mechanism is once broken, it cannot be immediately repaired.

[0008]

Therefore, as a result of intensive studies to solve the above-mentioned problems, the inventor has made a main connecting body provided with a locking rod urging the present invention with an elastic body,
A lock release plate including a lock connecting plate through which the lock rod can penetrate, a pressure swing plate that can be pressed in the lock release direction from the lock head side of the lock rod, and an operating rod that interlocks with the pressure swing plate. A connecting body provided with a means, wherein the tip of the locking rod projects and penetrates elastically to the connected body by contact between the main connecting body and the connected body, By doing so, various work attachments such as a crusher and a bucket can be easily and quickly attached to or detached from the boom tip of a construction vehicle having a work boom such as a hydraulic excavator, and the attachment thereof. The state can be extremely strong,
This is a solution to the above problem.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. The present invention is composed of a main connecting body A and a connected body B, and the main connecting body A is a shovel or the like. It is attached to the tip of a boom b for construction work of a construction vehicle, and the connected body B is attached to the attachment a side of an excavating bucket, a crusher, etc., and the connection between the boom b and the attachment a is connected to the main connecting body A and the connected body a. This is performed through the connecting body B.

The main connecting body A is, as shown in FIG.
A lock rod A1 is mounted on one side of the main board 1,
A main mounting portion 14 to be mounted on the end of the boom b1 of the construction vehicle is formed on the other side surface.

The locking rod A1 is, as shown in FIGS. 1, 3 and 4, etc., a cylindrical lock head 2 and a cylindrical stop collar 3 having a diameter larger than that of the lock head 2. When,
It is composed of a guide tube portion 4 having a diameter smaller than that of the stop flange 3.

The locking rod A1 has a main substrate 1 in the axial direction.
Of the lock rod A1 is supported by a guide body 6 so as to be slidable in the axial direction substantially parallel to the surface of the lock rod A1. The tubular portion 4 is slidably inserted.

The locking rod A1 is constructed so that it can be reciprocated in the axial direction by supporting the guide body 6, and the outer periphery of the guide tube portion 4 of the locking rod A1 is shown in FIGS. As shown in FIG. 3, an elastic body 7 such as a coil spring is provided, and one end in the longitudinal direction of the elastic body 7 abuts on the guide body 6 and the other end abuts on the stop flange 3, so that the stop flange 3 is It is always pressed by the elastic force of the elastic body 7.

A locking arm 8 is rotatably supported on the guide body 6 by a pin or the like, and the pivot support point is referred to as a pivot support point 8p. As shown in FIGS. 1 and 4, the locking arm 8 is formed with a notch-shaped locking recess 8a on the end side in the longitudinal direction, and the locking recess 8a is locked by the locking rod A1. Locking rod 5 for locking the locked portion 5 provided on the
1 is stopped at a predetermined position against the elastic force of the elastic body 7.

Further, the locking arm 8 has a contacted portion 8b formed at an appropriate position in the longitudinal direction thereof, and the contacted portion 8b is pressed from the outside, whereby the locking arm 8b is pressed. 8 rotates around a pivot point 8p, disengages from the locked portion 5 of the locking rod A1, moves axially by the elastic force of the elastic body 7, and is connected to the connected body B. .

The contacted portion 8b is, as shown in FIG.
The locking arm 8 is formed in a projecting shape from an appropriate portion so that a releasing push-up portion 17 of a linked body B, which will be described later, abuts and presses.

The locking arm 8 is provided with a locking spring 9 between itself and the main substrate 1, as shown in FIGS. The locking recess 8a of the arm 8 is constantly urged so that it can be locked to the locked portion 5 of the locking rod A1 in a pressed state.

The apparatus provided on the main substrate 1 such as the locking rod A1 is covered and protected by a cover A2 as shown in FIG. 2, and specifically, the cover A2 is a cubic box. A housing portion 10 formed in a shape is formed on the main substrate 1 so as to cover the locking rod A1 and the like, and the housing portion 10 has a structure shown in FIGS. The lock head guide through hole 11 is formed so that the lock head 2 can slide.

Further, as shown in FIG. 1 and the like, a lock connecting plate 16 of a connected body B, which will be described later, can be freely inserted into the side wall plate in which the lock head guide through hole 11 of the housing portion 10 is formed. The flat insertion groove 12 is formed.

Further, a releasing through hole 13 is formed on the top plate of the housing portion 10, and the abutted portion 8b of the locking arm 8 is located at a position corresponding to the position where the releasing through hole 13 is formed. Exists, and the releasing push-up portion 17 of the connected body B is inserted through the releasing through hole 13 and the abutted portion 8 of the locking arm 8 is inserted.
It has a structure capable of pressing b.

As described above, the main mounting portion 14 is provided on the main board 1 of the main connecting body A.
As shown in FIG. 2, the main mounting portion 14 has mounting plates 14a, 14a formed on both side edges of the main board 1 in the width direction.
The mounting holes 14b and 14b are formed in a and 14a, and when mounting on the tip of the boom b, the connecting shaft is mounted on the tip of the boom b by penetrating the mounting holes 14b and 14b. is there.

Next, in the connected body B, a lock connecting plate 16 is formed on one side surface of the slave substrate 15, and the lock head 2 of the lock rod A1 can be inserted into the lock connecting plate 16. The lock connecting hole 16a is formed.

Specifically, when the connected body B and the main connecting body A are properly connected, the lock connecting plate 16 is provided.
However, as shown in FIG. 3, when the locking rod A1 is moved in the axial direction when the locking rod A1 is orthogonal to the axial direction of the locking rod A1 and the locking connecting hole 16a faces the lock head 2. The lock connecting plate 16 is provided on the sub-board 15 so that the lock head 2 can pass through the lock connecting hole 16a.

Further, the sub-board 15 has a push-up portion 17 for releasing.
The releasing push-up portion 17 moves in the direction of the covering body A2 of the main connecting body A, and the abutted portion 8b of the locking arm 8 is passed through the releasing through hole 19 of the covering body A2. Is configured to be able to be pressed.

Further, a slave mounting portion 18 is formed on the slave substrate 15, and specifically, as shown in FIG. 2, the slave mounting portion 18 has slave mounting plates 18a, 18a on both lateral ends of the slave substrate 15. Is formed, and the sub-mounting holes 18 are formed in the sub-mounting plates 18a, 18a.
b, 18b are formed, and when the attachment shaft is attached to the attachment a, the connecting shaft is attached to the auxiliary attachment hole 18
It is attached to the attachment a by penetrating through b and 18b.

An engaging body A3 is provided on the main connecting body A and the connected body B, and an example of the engaging body A3 is composed of a connecting shaft rod 19 and a hook 20. One of the body A and the body B to be connected is provided with a connecting shaft rod 19, and the other is provided with a hook 20 engageable with the connecting shaft rod 19 and provided with an insertion opening 20a. It is a thing.

In the embodiments shown in FIGS. 1 and 2, a connecting rod 19 is provided on the side of the main connecting body A, and a hook 20 is attached to the connected body B.
The connecting shaft rod 19 is formed to have a large diameter and is installed on the same surface of the main substrate 1 on which the locking rod A1 and the like are provided.
Reference numerals 1 and 21 are provided at appropriate intervals from the surface of the main substrate 1.

Next, the lock releasing means C includes a pressing rocking plate 23 which can be pressed from the lock head 2 side of the locking rod A1 in the unlocking direction, and an operating rod 24 which interlocks with the pressing rocking plate 23. The pressing swing plate 23 has a substantially triangular shape with an arcuate tip so that the lock head 2 can be pressed.

The pressure swing plate 23 is provided on the connected body B via the support plate 22, and more specifically, the support plate 22 is fixed to the slave substrate 15 of the connected body B. Further, the pressing rocking plate 23 is pivotally supported on the supporting plate 22 so as to be rockable in the vertical direction, and the pressing rocking plate 23 is centered around the pivotal supporting portion.
The pressing surface 23a of the lock has an arc shape, and the lock connecting plate 16
The lock connecting hole 16a can be inserted into the lock connecting hole 16a.

An operating rod 24 that interlocks with the pressing swing plate 23.
Is provided in the vicinity of the pivot portion of the push rocking plate 23, and the actuating rod 24 is lifted around the pivot portion so that the push surface 23a of the push rocking plate 23 pushes the lock head 2 to lock the lock head 2. The working rod A1 can be pushed back to a position where it can be locked by the locking arm 8.

There is also an embodiment in which the operating rod 24 can be detached from the pressing rocking plate 23. Specifically, as shown in FIG. 4, the operating rod 24 can be inserted into the pressing rocking plate 23. The operating rod receiving cylinder 25 is fixed.

Regarding the operation of the connector for a construction work machine of the present invention, first, the main connector A is attached to the tip of the boom b side of the construction vehicle, and the object B is attached to the attachment a side of a shovel, a crusher or the like. Attach to. At this time, in the main connecting body A,
As shown in FIG. 1, the locking rod A1 is fixed to the unlocked position by the locking arm 8.

Next, as shown in FIG. 6, the side of the attachment a is fixed to the ground, and the boom b from the cab of the construction vehicle is fixed.
To guide the hooks 20, 20 of the main connecting body A to the 13 connecting rods of the connected body B of the attachment a,
The connecting rod 19 is inserted through the insertion opening 20a of the hook 20.

Next, the boom b is operated to move the main connecting body A about the connecting rod 19 as shown in FIG. 7 until the main connecting body A becomes substantially parallel to the connected body B. When the main connecting body A contacts the connected body B substantially in parallel while continuing to rotate, the lock connecting plate 16 of the connected body B fits into the flat insertion groove 12 of the main connecting body A and is locked. Connecting hole 16a and lock head 2 are opposed to each other, and lock head 2 is connected to lock connecting hole 1
6a can be inserted.

At approximately the same time, the releasing push-up portion 17 on the side of the connected body B has a covering A of the main connecting body A as shown in FIG.
2 is inserted into the releasing through hole 13 formed in 2, and the releasing push-up portion 17 hits the contacted portion 8b of the locking arm 8,
When the locking arm 8 is removed from the locked portion 5 of the locking rod A1 and the locking rod A1 is released from the locked state, the locking rod A1 moves in the axial direction by the elastic force of the elastic body 7, The lock head 2 is inserted into the lock connecting hole 16a, and the connecting work between the main connecting body A and the connected body B is completed.

Next, the main connecting body A and the connected body B in the connected state
In order to separate the two, the operating rod 24 of the unlocking means C is lifted, and as shown in FIG.
While pressing the lock head 2 of the lock rod A1 with 3a, the lock rod A1 is pushed back to the unlocked position, the lock head 2 is disengaged from the lock connecting hole 16a, and the locking arm 8 is locked. As shown in FIG. 9, the locked portion 5 of the locking rod A1 reaches the recessed portion 8a for the lock rod A1 and the lock head 2 of the lock rod A1 is pressed by the pressing surface 23a of the pressing rocking plate 23. By slightly separating the connected body B from the main connecting body A as it is, the locking recess 8a of the locking arm 8 is locked to the locked portion 5 of the locking rod A1, and the locking rod A1 is locked. Is locked in the unlocked position.

Further, the operating rod 24 is returned to the original state, and in that state, the connected body B is separated from the main connecting body A, and the separation of both is completed.

As described above, the main connecting body A is often attached to the tip of the boom b, and the connected body B is often attached to the side of the attachment a, but the present invention is not necessarily limited to this embodiment. The main connecting body A may be attached to the attachment a and the connected body B may be attached to the tip of the boom b.

The main connecting body A and the connected body B are shown in FIG.
As shown in (b), the tip of the boom b and the attachment a may be integrally formed in advance.

In the above embodiment, the lock body A1 of the main connecting body A is provided with one lock head 2, but the lock body A1 is further provided with two lock heads 2 and 2. There are also possible examples (see FIG. 10).

[0041]

According to the present invention, the main connecting body A provided with the locking rod A1 urged by the elastic body 7, the locking connecting plate 16 through which the locking rod A1 can penetrate, and the locking rod. It is composed of a connected body B provided with a lock releasing means C including a pressure oscillating plate 23 capable of pressing in the unlocking direction from the lock head 2 side of A1 and an operating rod 24 interlocking with the pressure oscillating plate 23. , The main connecting body A and the connected body B are brought into contact with each other, and the tip of the locking rod A1 projects toward the connected body B side and penetrates elastically to form a connecting member for construction work machine. The connecting body A and the connected body B can be connected instantaneously, and secondly, various effects such as unlocking can be performed very easily.

To explain the above effect in detail, the locking rod A1 provided on the main connecting body A has a structure in which the locking rod A1 protrudes toward the connected body B when the main connecting body A and the connected body B contact each other. By penetrating, the main connecting body A and the connected body B can be connected almost instantaneously.

Further, in the connecting work between the main connecting body A and the connected body B, the locking rod A1 is projected toward the connected body B side by merely bringing the main connecting body A and the connected body B into contact with each other. Since it penetrates, the operation can be extremely simple, and since reliable connection is possible, it is not necessary to confirm the connection state, and the worker involved in it can be eliminated.

Further, in the connected state, the locking rod A1 provided on the main connecting body A projects toward the connected body B and penetrates it.
Since they are connected, they are extremely strong against vibration and impact in the horizontal and vertical directions of the locking rod A1 in the axial direction, and are more resistant to vibration and impact than the conventional locking type with pawl and shaft. On the other hand, it can be made extremely strong and durable.

Further, the locking rod A1 is made of an elastic material such as a spring so as to project and penetrate to the connected body B side, so that the boom b can be connected to both the main connected body A and the connected body B. It can be attached to the tip, and like a locking device equipped with a hydraulic mechanism, it is attached to the boom b side and compared to the conventional type connector that has to be connected to the hydraulic mechanism of the construction vehicle. There is an advantage that the mounting means can be remarkably simple.

Next, since the locking rod A1 is biased by the elastic body 7, once the locking rod A1 is brought into a locked state with respect to the locking rod A1, a pressing force is exerted by the biasing of the elastic body 7. Therefore, it is possible to maintain an extremely strong locked state until the lock is released.

Next, the lock head 2 of the lock rod A1
And a connected body B provided with a lock releasing means C composed of a pressing rocking plate 23 that can be pressed in the unlocking direction from the side and an operating rod 24 that interlocks with the pressing rocking plate 23. Is provided on the lock connecting plate 16 side and the pressing rocking plate 23 directly pulls the lock rod A1 back to the lock releasing side, so that the lock releasing means C can be made extremely simple.

Further, the pressing swing plate 23 is connected to the lock connecting hole 1
Since it can be pushed in from the 6a side, the operator can easily confirm the released state of the locking rod A1 and, in this structure, the pressure swing plate 23, the support plate 22 and the like are connected. Since it can be provided outside the device, it can be mounted relatively easily after manufacturing, and can be easily maintained and repaired.

[0049]

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a main connection body and a connection body.

FIG. 2 is a perspective view showing a state in which a main connecting body and a connected body are separated from each other.

FIG. 3 is a vertical plan view of the present invention.

FIG. 4 is an enlarged side view of the unlocking means.

FIG. 5A is a schematic view showing a state in which an attachment is attached to a boom tip. FIG. 5B is a schematic view in which a connected body is integrally provided on the attachment.

FIG. 6 is a vertical cross-sectional side view showing a state in which a main connecting body and a connected body are engaged with each other at an engaging body portion.

FIG. 7 is a vertical cross-sectional side view showing a state in which the connection between the main connecting body and the connected body is completed.

FIG. 8 is a side view of an essential part showing a state in which the lock head is pressed by the pressing rocking plate.

FIG. 9 is a cross-sectional view of a main part of a state in which the connected body is separated from the main connecting body while pressing the lock head.

FIG. 10 is a vertical plan view showing an embodiment of the present invention in which two locking rods are provided.

[Explanation of symbols]

 A ... Main connecting body A1 ... Locking rod 2 ... Locking head 7 ... Elastic body 16 ... Locking connecting plate 23 ... Push swing plate 24 ... Actuating rod B ... Connected body C ... Unlocking means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kunihiko Matsui, 314 Chikusacho, Hanamigawa-ku, Chiba City, Sakado Works Co., Ltd. (72) Inventor, Isamu Nagayoshi, 314, Chikusacho, Hanamigawa-ku, Chiba City, Sakado Works (72) Inventor Toshiyuki Kuno, 314 Chikusacho, Hanamigawa-ku, Chiba City, Sakado Factory Co., Ltd. (72) Masayuki Asai, 314, Chikusacho, Hanamigawa-ku, Chiba City, Sakado Factory, Ltd. (72) Toshifumi Tojima, Chikusa-cho, Hanamigawa-ku, Chiba City 314 Address Sakado Factory Co., Ltd.

Claims (1)

[Claims] 1. A main connecting body provided with a lock rod urged by an elastic body, a lock connecting plate through which the lock rod can penetrate, and a lock releasing direction from a lock head side of the lock rod. It is composed of a connected body provided with a lock releasing means composed of a pressing rocking plate that can be pressed and an operating rod that interlocks with the pressing rocking plate, and the tip of the locking rod is brought into contact by contact between the main connecting body and the connected body. Is a connecting member for a construction work machine, wherein the connecting member projects and penetrates elastically.