Novel hydraulic accessory for excavator

Abstract

The novel hydraulic accessory for the excavator comprises an upper support, a side swing oil cylinder is arranged on the side face of the upper support, a middle box body is installed at the bottom of the upper support, a lower box body is rotatably installed at the bottom of the middle box body, a lock pin is installed at the end of a locking oil cylinder, and a main valve is installed on the side face of the top of the middle box body. Arc-shaped notches are formed in the inner sides of the right end and the lower end of the lower box body, clamps are installed at the ends of the clamp oil cylinders, 360-degree continuous rotation and 45-degree bidirectional side inclination of a working device at the front end of the excavator can be achieved, the whole device becomes a universal wrist joint, the working range of the excavator is widened, and the working efficiency of the excavator is improved. Rapid connection with various working machines and tools is achieved through the bottom rapid reloading and connecting device; and through the clamp device arranged on the lower box body, heavy objects can be picked up, and finally the purpose that one machine has multiple purposes is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of excavator attachment installation, and in particular to a novel hydraulic attachment for an excavator. Background Art

[0002] The existing front-end attachments of excavators have a limited operating range and can only follow the excavator to perform simple digging and lifting actions. This makes the excavator attachments single-function and requires different attachments to be replaced according to different operating requirements, which not only reduces operating efficiency but also increases the complexity of operation.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes a novel hydraulic attachment for an excavator to overcome the above technical problems existing in the existing related art.

[0005] To this end, the specific technical solution adopted by the present invention is as follows:

[0006] A new type of hydraulic attachment for an excavator comprises an upper bracket, a side swing cylinder is provided on the side of the upper bracket, a connecting pin is installed on the inner side of the upper part of the upper bracket, a middle box is installed on the bottom of the upper bracket, a lower box is provided on the bottom of the middle box, a locking cylinder is installed inside the lower box, a locking pin is installed on the end of the locking cylinder, a main valve is installed on the top of the middle box, an inner side of one end and an inner side of the lower part of the lower box are both provided with arc-shaped notches, a clamp cylinder is installed on the side of the lower box, and a clamp is installed on the end of the clamp cylinder.

[0007] As a further solution of the present invention, a cylinder hinge block is installed on the outer side of the side swing cylinder, the cylinder barrel of the side swing cylinder is hinged to the upper bracket through the cylinder hinge block, and the cylinder rod end of the side swing cylinder is hinged to the middle box.

[0008] As a further solution of the present invention, the middle box is rotatably connected to the lower box, a rotary motor is installed on the side of the middle box, a worm is fixedly installed on the end of the main shaft of the rotary motor, and a worm wheel is meshingly connected to the outer side of the worm.

[0009] As a further solution of the present invention, a fixing bolt is installed on the inner side of the worm wheel, the top of the lower box is fixedly connected to the worm wheel by the fixing bolt, a gap is provided between the worm wheel and the lower box, and the lower box is hinged to the middle box through the gap.

[0010] As a further solution of the present invention, a hydraulic rotary joint is provided at the lower part of the main valve, the hydraulic rotary joint passes through the center of the middle box, and the hydraulic rotary joint is communicated with the lower box.

[0011] As a further solution of the present invention, a lifting lug is provided at the bottom of the upper bracket, and the lifting lug is rotatably connected to the middle box body.

[0012] As a further solution of the present invention, a front bracket is installed at the front end of the lower box body, a first pin is installed between the front bracket and the clamp, a second pin is installed between the clamp and one end of the clamp cylinder, and a third pin is installed between the other end of the clamp cylinder and the lower box body.

[0013] The beneficial effects of the present invention are:

[0014] The present invention is provided with an upper bracket, a middle box body, a lower box body, a clamp, a rotary motor, a locking cylinder, etc. The device can be installed on the excavator through the upper bracket cooperating with the connecting pin shaft, and the attachment is installed on the bottom of the device by pushing the locking pin through the locking cylinder. The rotary motor controls the movement of the worm and worm gear, and the middle box body and the lower box body can rotate with each other, which can realize 360-degree continuous rotation and 45-degree two-way tilt of the front working device of the excavator, so that the whole device becomes a universal wrist joint, expanding the operating range and operating efficiency of the excavator; the quick-change connecting device at the bottom can realize quick connection with a variety of working machines and tools; the clamp device arranged on the lower box body can realize the picking operation of heavy objects, and finally achieve the purpose of one machine with multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of a new hydraulic attachment for an excavator according to an embodiment of the present invention;

[0017] Figure 2 1. It is a schematic diagram of the installation structure of a main valve of a novel hydraulic attachment for an excavator according to an embodiment of the present invention;

[0018] Figure 3 It is a schematic diagram of the installation structure of a locking cylinder of a new hydraulic attachment for an excavator according to an embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the installation structure of a clamp cylinder of a new hydraulic attachment for an excavator according to an embodiment of the present invention;

[0020] Figure 5It is a schematic diagram of the installation structure of a lower box of a new hydraulic attachment for an excavator according to an embodiment of the present invention;

[0021] Figure 6 The invention is a schematic diagram of the installation structure of a worm and a worm wheel of a new hydraulic attachment for an excavator according to an embodiment of the present invention.

[0022] In the figure:

[0023] 1. Upper bracket; 2. Side swing cylinder; 3. Connecting pin; 4. Middle box; 5. Lifting ear; 6. Main valve; 7. Rotary motor; 8. Cylinder hinge block; 9. Fixing bolt; 10. Lower box; 11. Arc notch; 12. Clamp cylinder; 13. Front bracket; 14. Clamp; 15. Locking cylinder; 16. Locking pin; 17. Pin; 18. Worm gear; 19. Worm; 20. Clearance; 21. Hydraulic rotary joint. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the present invention, a novel hydraulic attachment for an excavator is provided.

[0026] Please refer to the instruction manual Figure 1-6 A new type of hydraulic attachment for an excavator according to an embodiment of the present invention comprises an upper bracket 1, a side of the upper bracket 1 is provided with a side swing cylinder 2, a connecting pin 3 is installed on the inner side of the upper part of the upper bracket 1, a middle box body 4 is installed at the bottom of the upper bracket 1, a lower box body 10 is provided at the bottom of the middle box body 4, a locking cylinder 15 is installed inside the lower box body 10, a locking pin 16 is installed at the end of the locking cylinder 15, a main valve 6 is installed on the top of the middle box body 4, an arc-shaped notch 11 is provided on the inner side of one end and the inner side of the lower part of the lower box body 10, a clamp cylinder 12 is installed on the side of the lower box body 10, and a clamp 14 is installed at the end of the clamp cylinder 12.

[0027] The device is connected to the excavator through the upper bracket 1 and the connecting pin 3. The upper bracket 1 and the middle box 4 are driven to swing relative to each other by the contraction of the side swing cylinder 2, and the swing amplitude is 45 degrees in both directions. The worm 19 is driven to rotate by the rotary motor 7, and the worm 19 drives the worm wheel 18 to rotate, thereby driving the lower box 10 to rotate through the worm wheel 18. The hydraulic oil inside the main valve 6 enters the locking cylinder 15 and the clamp cylinder 12 after passing through the hydraulic rotary joint 21. The locking cylinder 15 pushes the locking pin 16 to work, so that the excavator attachment is installed in the arc-shaped notch 11 of the lower box 10 and is locked by the locking pin 16. The clamp cylinder 12 pushes the clamp 14 to rotate in the front bracket 13, and the clamp 14 can clamp objects after relative movement.

[0028] In one embodiment, please refer to the attached specification Figure 1-6 As a further solution of the present invention, a cylinder hinge block 8 is installed on the outer side of the side swing cylinder 2, the cylinder barrel of the side swing cylinder 2 is hinged to the upper bracket 1 through the cylinder hinge block 8, and the cylinder rod end of the side swing cylinder 2 is hinged to the middle box 4.

[0029] The side swing cylinder 2 drives the upper bracket 1 and the middle box 4 to swing relative to each other by contraction.

[0030] In one embodiment, please refer to the attached specification Figure 1-6 As a further solution of the present invention, the middle box body 4 is rotatably connected to the lower box body 10, a rotary motor 7 is installed on the side of the middle box body 4, a worm 19 is fixedly installed at the end of the main shaft of the rotary motor 7, and a worm wheel 18 is meshingly connected to the outer side of the worm 19.

[0031] The worm 19 is driven to rotate by the rotary motor 7 , and the worm 19 drives the worm wheel 18 to rotate, thereby driving the lower box body 10 to rotate through the worm wheel 18 .

[0032] In one embodiment, please refer to the attached specification Figure 1-6 As a further solution of the present invention, a fixing bolt 9 is installed on the inner side of the worm wheel 18, the top of the lower box body 10 is fixedly connected to the worm wheel 18 by the fixing bolt 9, a gap 20 is provided between the worm wheel 18 and the lower box body 10, and the lower box body 10 is hinged to the middle box body 4 through the gap 20.

[0033] Thereby, the middle box body 4 and the lower box body 10 can maintain stable rotation.

[0034] In one embodiment, please refer to the attached specification Figure 1-6 As a further solution of the present invention, a hydraulic rotary joint 21 is provided at the lower part of the main valve 6 , and the hydraulic rotary joint 21 passes through the center of the middle box 4 , and the hydraulic rotary joint 21 is connected to the lower box 10 .

[0035] Thereby, an oil path is formed between the main valve 6 and the locking cylinder 15 and the clamp cylinder 12 .

[0036] In one embodiment, please refer to the attached specification Figure 1-6 As a further solution of the present invention, a lifting lug 5 is provided at the bottom of the upper bracket 1 , and the lifting lug 5 is rotatably connected to the middle box 4 .

[0037] Thereby, the upper bracket 1 and the middle box body 4 can swing stably relative to each other.

[0038] In one embodiment, please refer to the attached specification Figure 1-6 As a further solution of the present invention, a front bracket 13 is installed at the front end of the lower box body 10, a first pin shaft 17 is installed between the front bracket 13 and the clamp 14, a second pin shaft 22 is installed between the clamp 14 and one end of the clamp cylinder 12, and a third pin shaft 23 is installed between the other end of the clamp cylinder 12 and the lower box body 10.

[0039] The device is connected to the excavator through the upper bracket 1 and the connecting pin 3. The upper bracket 1 and the middle box 4 are driven to swing relative to each other by the contraction of the side swing cylinder 2, and the swing amplitude is 45 degrees in both directions. The worm 19 is driven to rotate by the rotary motor 7, and the worm 19 drives the worm wheel 18 to rotate, thereby driving the lower box 10 to rotate through the worm wheel 18. The hydraulic oil inside the main valve 6 enters the locking cylinder 15 and the clamp cylinder 12 after passing through the hydraulic rotary joint 21. The locking cylinder 15 pushes the locking pin 16 to work, so that the excavator attachment is installed in the arc-shaped notch 11 of the lower box 10 and is locked by the locking pin 16. The clamp cylinder 12 pushes the clamp 14 to rotate in the front bracket 13, and the clamp 14 can clamp objects after relative movement.

[0040] In summary, the present invention has the following beneficial effects: it can realize 360-degree continuous rotation and 45-degree bidirectional tilt of the front working device of the excavator, so that the whole device becomes a universal wrist joint, expanding the working range and working efficiency of the excavator; it can realize quick connection with a variety of working tools through the bottom quick-change connection device; the clamp device arranged on the lower box body can realize the picking operation of heavy objects, and finally achieve the purpose of one machine with multiple uses.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel hydraulic attachment for an excavator, comprising an upper bracket (1), characterized in that: A side swing cylinder (2) is provided on the side of the upper bracket (1), a connecting pin shaft (3) is installed on the inner side of the upper part of the upper bracket (1), a middle box (4) is installed on the bottom of the upper bracket (1), a lower box (10) is provided on the bottom of the middle box (4), a locking cylinder (15) is installed inside the lower box (10), a locking pin (16) is installed at the end of the locking cylinder (15), a main valve (6) is installed on the top of the middle box (4), an arc-shaped notch (11) is provided on the inner side of one end and the inner side of the lower part of the lower box (10), a clamp cylinder (12) is installed on the side of the lower box (10), and a clamp (14) is installed at the end of the clamp cylinder (12).

2. The novel hydraulic attachment for excavators according to claim 1 is characterized in that: A cylinder hinge block (8) is installed on the outer side of the side swing cylinder (2); the cylinder barrel of the side swing cylinder (2) is hinged to the upper bracket (1) via the cylinder hinge block (8); and the end of the cylinder rod of the side swing cylinder (2) is hinged to the middle box (4).

3. The novel hydraulic attachment for excavators according to claim 1 is characterized in that: The middle box body (4) is rotatably connected to the lower box body (10), a rotary motor (7) is installed on the side of the middle box body (4), a worm (19) is fixedly installed on the end of the main shaft of the rotary motor (7), and the outer side of the worm (19) is meshingly connected with a worm wheel (18).

4. The novel hydraulic attachment for excavators according to claim 3 is characterized in that: A fixing bolt (9) is installed on the inner side of the worm wheel (18); the top of the lower box body (10) is fixedly connected to the worm wheel (18) via the fixing bolt (9); a gap (20) is provided between the worm wheel (18) and the lower box body (10); and the lower box body (10) is hinged to the middle box body (4) via the gap (20).

5. The novel hydraulic attachment for excavators according to claim 1 is characterized in that: A hydraulic rotary joint (21) is provided at the lower part of the main valve (6), and the hydraulic rotary joint (21) passes through the center of the middle box (4). The hydraulic rotary joint (21) is communicated with the lower box (10).

6. The novel hydraulic attachment for excavators according to claim 1 is characterized in that: A lifting lug (5) is provided at the bottom of the upper bracket (1), and the lifting lug (5) is rotatably connected to the middle box body (4).

7. The novel hydraulic attachment for excavators according to claim 1 is characterized in that: A front bracket (13) is installed at the front end of the lower box body (10), a first pin shaft (17) is installed between the front bracket (13) and the clamp (14), a second pin shaft (22) is installed between the clamp (14) and one end of the clamp cylinder (12), and a third pin shaft (23) is installed between the other end of the clamp cylinder (12) and the lower box body (10).

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