CN215105601U - Excavator accessory quick-change connector with simple and convenient structure - Google Patents

Abstract

The utility model relates to an excavator accessory quick-change connector with simple and convenient structure replacement, which comprises a connector main body, wherein the upper end of the connector main body is hinged with an excavator arm of an excavator through an excavator arm pin, the upper end of the connector main body is hinged with a connecting rod mechanism through a connecting rod pin, and a bucket oil cylinder of the excavator drives the connector main body to rotate by taking the excavator arm pin as a shaft core through the connecting rod mechanism; the bottom of the joint main body is provided with a locking hook mechanism comprising a fixed locking hook, a sliding locking hook and a clamping pin; the sliding lock hook is assembled in a sliding manner along the left and right directions; the hook parts of the fixed lock hook and the sliding lock hook pass through and are locked between two accessory pins of the bucket; the bayonet pin penetrates through the joint main body from front to back and is used for limiting and fixing the sliding lock hook of the locked accessory pin. Through the locking of slip latch hook and the spacing fixed of bayonet lock, easy operation is light swift, and the locking dynamics is big, effectively reduces the bucket and rocks the probability, and then effectively reduces the wearing and tearing between each part, improves the stability in use.

Description

Excavator accessory quick-change connector with simple and convenient structure

Technical Field

The utility model relates to an excavator accessory field especially indicates a simple and easy convenient excavator accessory quick change coupler of changing of structure.

Background

In order to meet the requirements of complex and variable construction environments and operation, the excavator is matched with various accessories, which is a necessary function. The quick-change connector of the existing excavator accessories mainly comprises: oil pressure control type and screw tightness control type. The quick-change connector has the disadvantages of complex structure, large volume and low reliability. The method specifically comprises the following steps:

oil pressure control type: the quick replacement process is controlled by a hydraulic system, and a quick replacement oil cylinder and a corresponding pipeline of the hydraulic control system are installed on a connecting mechanism between the operating machine and the host. The whole process of replacing the working machine is realized by the operation of sitting in the cab without leaving the cab, so that the operation is easy, quick and convenient; but the structure is complex, the cost is high, the pipeline is easy to damage in the work, the work cannot be carried out, and the reliability is low.

Screw tightness control type: 1. when the accessory is replaced in the using process, the screw rod needs to be manually rotated to be loose and tight, the labor and the time are wasted, and the work is complicated and the efficiency is low. 2. The excavator works under the adverse circumstances at the stone of digging earth, and this kind of environment causes the screw rod easily to rust and sand and soil to pollute, causes the screw rod locking, causes very hard even locking can't pull open when the dismouting. 3. In the use process, the locking force of the accessory needs to be locked is insufficient, so that the wearing service life of the accessory pin and the quick-change connector is short, and the accessory shakes.

Disclosure of Invention

The utility model provides a simple and easy convenient excavator accessory quick change coupler of changing of structure to overcome the problem that the structure is complicated, change troublesome poeration, the reliability is low that current quick change coupler exists.

The utility model adopts the following technical scheme:

the excavator accessory quick-change connector with a simple and convenient structure comprises a connector main body, wherein the upper end of the connector main body is hinged with an excavating arm of an excavator through an excavating arm pin, the upper end of the connector main body is hinged with a connecting rod mechanism through a connecting rod pin, the connecting rod mechanism comprises a connector connecting rod and an excavating arm connecting rod, the outer end of the connector connecting rod is hinged with the connector main body, the outer end of the excavating arm connecting rod is hinged with the excavating arm, and the excavating arm pin is positioned between a hinged shaft at the outer end of the connector connecting rod and a hinged shaft at the outer end of the excavating arm connecting rod; the inner end of the joint connecting rod, the inner end of the digging arm connecting rod and the bucket oil cylinder are hinged into a whole through a connecting rod pin. A bucket cylinder of the excavator drives the joint main body to rotate by taking an arm digging pin as a shaft core through the connecting rod mechanism; the bottom of the joint main body is provided with a latch hook mechanism; the locking hook mechanism comprises a fixed locking hook, a sliding locking hook and a clamping pin; a blind hole slideway is arranged in the joint main body, and the sliding lock hook is arranged on the blind hole slideway in a sliding manner along the left and right directions; the fixed lock hook is fixedly arranged at the bottom of the joint main body, the opening directions of the hook parts of the fixed lock hook and the sliding lock hook are opposite, the hook parts of the fixed lock hook and the sliding lock hook penetrate through the two accessory pins assembled at the top of the bucket, and the fixed lock hook slides in the direction away from the fixed lock hook through the sliding lock hook to lock the two accessory pins; the joint body is provided with a clamping window, the clamping pin penetrates through the clamping window from front to back, and the clamping pin is used for limiting and fixing the sliding lock hook of the locked accessory pin; the side wall of the sliding lock hook abutted against the bayonet is provided with a first elastic body.

In a further improvement, the bayonet lock is in a wedge-shaped structure, and the side wall of the bayonet lock, which is abutted against the bayonet lock and/or the sliding lock hook, is provided with a slope structure of the wedge-shaped structure.

In a further improvement, the plane where the bayonet lock is abutted with the bayonet window and/or the sliding lock hook is provided with anti-slip insections.

In a further improvement, the latch hook mechanism further includes a fixed ejector block fixedly mounted on the excavating arm, and when the excavating bucket cylinder pushes the fixed shaft of the joint body to rotate to a set angle range, the fixed ejector block pushes the sliding latch hook to move in a direction away from the fixed latch hook.

In a further improvement, the latch hook mechanism further comprises a push block, the outer end of the push block is abutted against the fixed ejector block, and the fixed ejector block pushes the sliding latch hook through the inner end of the push block. And a second elastic body is arranged on the side wall of the sliding lock hook, which is abutted against the inner end of the push block.

In a further improvement, the outer end of the push block is hinged and assembled on the fixed ejector block.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: through the arrangement of the latch hook mechanism of the utility model, the bolt does not need to be screwed in the use process of the quick change connector, and the operation is simple and the use is convenient through the locking of the sliding latch hook and the limiting and fixing of the bayonet lock; the sliding lock hook can be locked and released to realize pushing power through the rotation process of the bucket, the whole process is less in manual intervention, the operation is simple, light and rapid, the locking force of the lock hook mechanism is large, the shaking probability of the bucket can be effectively reduced, the abrasion among all parts is effectively reduced, and the use stability is improved; in addition, through the configuration of elastomer, make the locking process of slip latch hook have buffering surplus, effectively prevent that the bucket from rotating the dynamics too big, the each part extrusion deformation condition that the turned angle is too big and lead to takes place, and compress tightly the setting through the developments of elastomer to the slip latch hook of locking state, make latch hook mechanism can be dynamic and firmly embrace the locking with the accessory round pin, can further reduce the probability of rocking in the bucket work and effectively reduce wearing and tearing, effectively improve bucket job stabilization nature, also improve the life of quick change coupler and accessory round pin, reduce the maintenance, the use cost such as maintenance, change, it is more convenient to use.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a locked state of a quick-change connector according to an embodiment.

Fig. 2 is a schematic cross-sectional structural view of an unlocked state of the quick-change coupler according to an embodiment.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 and 2, the quick change coupler for the excavator accessory, which has a simple and convenient structure, comprises a coupler body 1, wherein the upper end of the coupler body 1 is hinged with an excavator arm 2 of an excavator through an excavator arm pin 21, the upper end of the coupler body 1 is hinged with a link mechanism 3 through a link pin, the link mechanism 3 comprises a coupler link 31 and an excavator arm link 32, the outer end of the coupler link 31 is hinged with the coupler body 1, the outer end of the excavator arm link 32 is hinged with the excavator arm 2, and the excavator arm pin 21 is located between a hinge shaft at the outer end of the coupler link 31 and a hinge shaft at the outer end of the excavator arm link 32; the inner end of the joint link 31, the inner end of the arm link 32 and the outer end of the power take-off rod of the bucket cylinder 22 are hinged as a whole by link pins. The bucket cylinder 22 of the excavator drives the joint main body 1 to rotate about the arm pin 21 by the link mechanism 3.

With continued reference to fig. 1 and 2, the bottom of the joint main body 1 is provided with a latch hook mechanism 4; the latch hook mechanism 4 includes a fixed latch hook 41, a sliding latch hook 42, and a latch 43; a blind hole slideway 10 is arranged in the joint main body 1, and the sliding lock hook 42 is arranged on the blind hole slideway 10 in a sliding manner along the left and right directions; the blind hole slideway 10 and the sliding lock hook 42 are preferably in seamless connection, and the sliding lock hook 42 effectively reduces the shaking probability in the use process through the configuration of a small gap, so that the abrasion among all parts is effectively reduced, and the use stability is improved.

With continued reference to fig. 1 and 2, the fixed latch hook 41 is fixedly installed at the bottom of the joint body 1, the opening directions of the hook portions of the fixed latch hook 41 and the sliding latch hook 42 are opposite, the hook portions of the fixed latch hook 41 and the sliding latch hook 42 pass through between two accessory pins 51 (including a first accessory pin 511 and a second accessory pin 512) assembled at the top of the bucket 5, and slide to lock the two accessory pins 51 by the sliding latch hook 42 in a direction away from the fixed latch hook 41. As shown in fig. 1, an inner hook wall of a hook portion (connected to the accessory pin 51) of the sliding lock hook 42 has an inclined structure from outside to inside, so that in the sliding locking process of the sliding lock hook 42, the inner hook wall also has a clamping function on the accessory pin 51 in the up-down direction, so that the sliding lock hook 42 can firmly lock the accessory pin 51, thereby effectively reducing the shaking probability of the bucket in operation, effectively reducing the abrasion among components, and improving the use stability.

With reference to fig. 1 and 2, the latch hook mechanism 4 further includes a fixed top 44, the fixed top 44 is fixedly mounted on the excavator arm 2, and when the bucket cylinder 22 pushes the joint body 1 to rotate to a predetermined angle range, the fixed top 44 pushes the sliding latch hook 42 to move in a direction away from the fixed latch hook 41. Further, the latch hook mechanism 4 further includes a pushing block 45, an outer end of the pushing block 45 abuts against the fixed ejector 44, and the fixed ejector 44 pushes the sliding latch hook 42 through an inner end of the pushing block 45. A second elastic body 422 is fixedly arranged on the side wall of the sliding latch hook 42 abutting against the inner end of the push block 45; the second elastic body 422 may be an elastic rubber pad as shown in fig. 1, or may be a compression spring; through the configuration of second elastomer 422 for the locking process of sliding latch hook 42 has buffer margin, effectively prevents that bucket 5 rotation dynamics is too big, the too big each part extrusion deformation condition that leads to of turned angle from taking place. The outer end of the push block 45 is hinged to the fixed ejector block 44, so that the number of times of manual taking and moving of the push block 45 in the using process is effectively reduced, the loss probability of the push block 45 can be lowered, the searching workload is reduced, and the use is more convenient.

With continued reference to fig. 1 and 2, the joint body 1 is provided with a clamping window 11, the clamping pin 43 passes through the clamping window 11 from the front to the back, and the clamping pin 43 is used for limiting and fixing the sliding locking hook 42 of the locked accessory pin 51; a first elastic body 421 is disposed on a side wall of the slide latch hook 42 abutting against the latch 43; the first elastic body 421 may be an elastic rubber pad as shown in fig. 1, or may be a compression spring; the first elastic body 421 is used for dynamically pressing the sliding lock hook 42 in the locking state, so that the lock hook mechanism 4 can dynamically and firmly clamp and lock the accessory pin 51, the shaking probability of the bucket 5 in the work process can be further reduced, the abrasion can be effectively reduced, the working stability of the bucket 5 can be effectively improved, and the service lives of the quick-change connector and the accessory pin 51 can be prolonged. The latch 43 has a wedge-shaped structure, and the side wall of the latch 43 abutting against the latch window 11 and/or the sliding latch hook 42 has a slope structure of the wedge-shaped structure. And preferably, the plane where the latch 43 abuts against the latch window 11 and/or the sliding latch hook 42 is provided with anti-slip insections.

With continued reference to fig. 1 and 2, the accessory mounting method of the accessory quick-change coupler according to the present embodiment includes: firstly, the operating device causes the bucket cylinder 22 to pull up the quick-change connector, so that the quick-change connector rotates upwards, and then the excavator arm 2 is operated to drive the fixed lock hook 41 of the quick-change connector to hook the first accessory pin 511 corresponding to the bucket 5, and at the moment, the sliding lock hook 42 automatically slides to be close to the fixed lock hook 41 under the gravity; secondly, the bucket cylinder 22 pushes the quick-change coupler to rotate downwards, the sliding lock hook 42 penetrates through a gap between two accessory pins 51 of the bucket 5, along with the continuous rotation of the quick-change coupler, the fixed ejector block 44 on the bucket arm 2 abuts against and limits the sliding lock hook 42 (when the ejector block 45 is configured), the sliding lock hook 42 is pushed reversely to slide away from the fixed lock hook 41 until the lock hook mechanism 4 locks the second accessory pin 512 to stop the rotation of the quick-change coupler, finally, the sliding lock hook 42 is limited and fixed by inserting the clamping pin 43 into the clamping window 11, the bucket cylinder 22 pulls the quick-change coupler to rotate upwards, the fixed ejector block 44 does not have an urging force on the sliding lock hook 42, and the clamping pin 43 is pressed by the sliding lock hook 42 in a reverse direction (when the elastic body 421 is configured), so that the clamping pin 43 is prevented from falling off in the use process of the bucket 5.

With continued reference to fig. 1 and 2, the accessory unlocking method of the accessory quick-change coupler according to the present embodiment includes: the bucket cylinder 22 pushes the quick-change connector to rotate downwards until a fixed jacking block 44 presses against the sliding lock hook 42, then the sliding lock hook 42 slides to release the pressing state of the lock pin 43, the lock pin 43 is taken down, the quick-change connector is rotated upwards, and in the process, the sliding lock hook 42 gradually approaches the fixed lock hook 41 under the action of gravity; further rotation of the quick-change coupler causes the sliding shackle 42 to move away from the second accessory pin 512 as the quick-change coupler moves upward; by further rotating the quick-change coupler, the locking hook 41 can be disengaged from the first attachment pin 511; thereby completing the operation of disengaging the quick coupling from the bucket 5.

In addition, after the bucket 5 is installed, the configured pushing block 45 can rotate or move away, so that the situation that the fixed ejector block 44 pushes the sliding lock hook 42 through the pushing block 45 to unlock when the downward rotation angle of the quick-change connector is too large is avoided.

Through the arrangement of the latch hook mechanism 4 of the utility model, the bolt operation of the quick change connector is not required to be screwed in the use process, and the operation is simple and the use is convenient through the locking of the sliding latch hook 42 and the limiting fixation of the bayonet lock 43; the locking and the loosening of the sliding lock hook 42 can realize the pushing of power through the rotation process of the bucket 5, the manual intervention in the whole process is less, the operation is simple, light and fast, the locking force of the lock hook mechanism 4 is large, the shaking probability of the bucket 5 can be effectively reduced, the abrasion among all parts is effectively reduced, the use stability is improved, the use cost of maintenance, replacement and the like is reduced, and the use is more convenient.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (6)

1. The quick-change joint for the excavator accessory with simple and convenient structure replacement comprises a joint main body, wherein the upper end of the joint main body is hinged with an excavator arm of an excavator through an excavator arm pin, the upper end of the joint main body is hinged with a connecting rod mechanism through a connecting rod pin, and an excavator bucket oil cylinder of the excavator drives the joint main body to rotate by taking the excavator arm pin as a shaft core through the connecting rod mechanism; the method is characterized in that:

the bottom of the joint main body is provided with a latch hook mechanism; the locking hook mechanism comprises a fixed locking hook, a sliding locking hook, a clamping pin and a fixed top block;

a blind hole slideway is arranged in the joint main body, and the sliding lock hook is arranged on the blind hole slideway in a sliding manner along the left and right directions;

the fixed lock hook is fixedly arranged at the bottom of the joint main body, the opening directions of the hook parts of the fixed lock hook and the sliding lock hook are opposite, the hook parts of the fixed lock hook and the sliding lock hook penetrate through the two accessory pins assembled at the top of the bucket, and the fixed lock hook slides in the direction away from the fixed lock hook through the sliding lock hook to lock the two accessory pins;

the fixed ejector block is fixedly arranged on the digging arm, and when the bucket oil cylinder pushes the joint main body fixed shaft to rotate to a set angle range, the fixed ejector block pushes the sliding lock hook to move along the direction departing from the fixed lock hook;

the joint body is provided with a clamping window, the clamping pin penetrates through the clamping window from front to back, and the clamping pin is used for abutting and limiting the sliding lock hook of the locked accessory pin; the side wall of the sliding lock hook abutted against the bayonet is provided with a first elastic body.

2. The excavator accessory quick-change connector with simple and convenient structure according to claim 1 is characterized in that: the latch hook mechanism further comprises a push block, the outer end of the push block is abutted to the fixed ejector block, and the fixed ejector block pushes the sliding latch hook through the inner end of the push block.

3. The excavator accessory quick-change connector with simple and convenient structure according to claim 2, characterized in that: the outer end of the push block is hinged and assembled on the fixed ejector block.

4. The excavator accessory quick-change connector with simple and convenient structure according to claim 2, characterized in that: and a second elastic body is arranged on the side wall of the sliding lock hook, which is abutted against the inner end of the push block.

5. An excavator accessory quick-change connector with a simple and convenient structure according to any one of claims 1 to 4, characterized in that: the bayonet lock is in a wedge-shaped structure, and the side wall of the bayonet lock, which is abutted to the bayonet lock and/or the sliding lock hook, is provided with an inclined surface structure of the wedge-shaped structure.

6. The excavator accessory quick-change connector with simple and convenient structure according to claim 5, characterized in that: and anti-skidding insections are arranged on the plane where the bayonet lock is abutted to the bayonet window and/or the sliding lock hook.

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