Protective device for hydraulic oil cylinder of excavator

Abstract

The utility model discloses a protective device for a hydraulic oil cylinder of an excavator, which belongs to the technical field of hydraulic oil cylinder protection and comprises a protective shell, and first threaded holes are arranged on opposite inner walls of the protective shell. The device has the beneficial effects that a first threaded column and a third threaded column are arranged, and two first rotating plates are rotated, so that the two first rotating plates drive the two first threaded columns to rotate in two first threaded holes correspondingly, and the two first threaded columns drive two first arc-shaped limiting plates to be close to or away from each other correspondingly; the hydraulic oil cylinder body can be conveniently fixed or mounted through the two first arc-shaped limiting plates, and a second rotating plate is rotated to drive a third threaded column to rotate in a second threaded hole, so that the third threaded column drives a second arc-shaped limiting plate to ascend or descend; and the hydraulic oil cylinder body can be conveniently fixed or installed through the second arc-shaped limiting plate, and hydraulic oil cylinder bodies of different specifications can be conveniently fixed or installed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder protection, and more specifically, to a hydraulic cylinder protection device for an excavator. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the reduction device can be eliminated, and there is no transmission gap, and the motion is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasion, and other devices are indispensable. However, the existing hydraulic cylinder protection device for excavators cannot be used with hydraulic cylinders of different specifications, and it is inconvenient to install and fix the hydraulic cylinder. Utility Model Content

[0003] (1) Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an excavator hydraulic cylinder protection device, which has the characteristics of being suitable for use with hydraulic cylinders of different specifications and being easy to install and fix the hydraulic cylinders.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides an excavator hydraulic cylinder protection device, including a protection shell, first threaded holes are opened on the relative inner walls of the protection shell, first threaded columns are threadedly connected to the insides of the two first threaded holes, first bearings are sleeved on the opposite ends of the two first threaded columns, first arc-shaped limit plates are fixedly connected to the opposite surfaces of the two first bearings, the same hydraulic cylinder body is overlapped on the opposite surfaces of the two first arc-shaped limit plates, the other ends of the two first threaded columns are fixedly connected to the first rotating plate, an annular cover plate is overlapped on the top of the protection shell, a first U-shaped fixing seat is fixedly connected to the side of the annular cover plate, a second U-shaped fixing seat is fixedly connected to the surface of the protection shell, and a first U-shaped fixing seat is fixed on the opposite surface of the first U-shaped fixing seat The cam is connected to a same sliding rod, the surface of the sliding rod is movably sleeved with a sliding cylinder, the surface of the sliding cylinder is fixedly connected with a second threaded column, the second threaded column is movably connected to the inside of the second U-shaped fixing seat, the surface of the second threaded column is threadedly connected with a threaded cap, the top of the threaded cap overlaps with the bottom of the second U-shaped fixing seat, the top of the annular cover plate is provided with a second threaded hole, the number of the second threaded holes is two, the insides of the two second threaded holes are threadedly connected with a third threaded column, the bottom ends of the two third threaded columns are sleeved with a second bearing, the bottoms of the two second bearings are fixedly connected with a second arc-shaped limiting plate, the bottoms of the two second arc-shaped limiting plates are overlapped with the top of the hydraulic cylinder body, and the tops of the two third threaded columns are fixedly connected with a second rotating plate.

[0007] When the excavator hydraulic cylinder protection device of the technical solution is used, the two first rotating plates are rotated to make the two first rotating plates drive the two first threaded columns to rotate inside the two first threaded holes respectively, so that the two first threaded columns drive the two first arc-shaped limit plates to move closer to or farther away from each other, which is convenient for fixing or installing the hydraulic cylinder body through the two first arc-shaped limit plates, and by rotating the second rotating plate, the second rotating plate drives the third threaded column to rotate inside the second threaded hole, so that the third threaded column drives the second arc-shaped limit plate to rise or fall, which is convenient for fixing or installing the hydraulic cylinder body through the second arc-shaped limit plate, and is convenient for fixing or installing hydraulic cylinder bodies of different specifications, and the operation is simple and convenient, and by rotating the threaded cap, the threaded cap is rotated on the surface of the second threaded cap, so that the top of the threaded cap and the bottom of the second U-shaped fixing seat are moved away from and closer to each other, which is convenient for disassembling or fixing the annular cover plate, and the operation is simple and convenient.

[0008] Furthermore, a first rubber pad is provided on the inner wall of the first arc-shaped limiting plate, and a second rubber pad is provided on the inner wall of the second arc-shaped limiting plate.

[0009] Furthermore, a buckle plate is fixedly connected to the surface of the threaded cap.

[0010] Furthermore, the top of the second arc-shaped limiting plate is fixedly connected to a limiting column, the top of the annular cover plate is provided with a limiting hole, and the limiting column is movably connected inside the limiting hole.

[0011] Furthermore, a heat dissipation port is provided on the surface of the protective shell, and a dustproof net is provided inside the heat dissipation port.

[0012] Furthermore, an annular groove is formed on the top of the protective shell, an annular plate is fixedly connected to the bottom of the annular cover plate, and the annular plate is movably connected to the inside of the annular groove.

[0013] (3) Beneficial effects

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. The hydraulic cylinder protection device for an excavator is provided with a first threaded column and a third threaded column. By rotating the two first rotating plates, the two first rotating plates respectively drive the two first threaded columns to rotate inside the two first threaded holes, so that the two first threaded columns respectively drive the two first arc-shaped limit plates to approach or move away from each other, so that the hydraulic cylinder body can be fixed or installed through the two first arc-shaped limit plates. By rotating the second rotating plate, the second rotating plate drives the third threaded column to rotate inside the second threaded hole, so that the third threaded column drives the second arc-shaped limit plate to rise or fall, so that the hydraulic cylinder body can be fixed or installed through the second arc-shaped limit plate, and the hydraulic cylinder body of different specifications can be fixed or installed, and the operation is simple and convenient.

[0016] 2. The hydraulic cylinder protection device of the excavator is provided with a threaded cap and a second threaded column. By rotating the threaded cap, the threaded cap is rotated on the surface of the second threaded column, so that the top of the threaded cap and the bottom of the second U-shaped fixing seat are moved away from or close to each other, which is convenient for disassembly or fixing of the annular cover plate, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of a three-dimensional cross section of the utility model;

[0019] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0021] The symbols in the accompanying drawings are:

[0022] 1. Protective shell; 2. Hydraulic cylinder body; 3. First threaded hole; 4. First threaded column; 5. First arc-shaped limit plate; 6. First rubber pad; 7. First rotating plate; 8. Annular cover plate; 9. First U-shaped fixing seat; 10. Second U-shaped fixing seat; 11. Sliding rod; 12. Sliding cylinder; 13. Second threaded column; 14. Threaded cap; 15. Buckle plate; 16. Annular groove; 17. Annular plate; 18. Second threaded hole; 19. Third threaded column; 20. Second arc-shaped limit plate; 21. Second rubber pad; 22. Limiting hole; 23. Limiting column; 24. Second rotating plate; 25. Heat dissipation port; 26. Dustproof net. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0024] Example:

[0025] The following is combined with Figure 1-3 The utility model is described in further detail.

[0026] See also Figure 1-3The utility model provides a technical solution: a hydraulic cylinder protection device for an excavator, comprising a protection shell 1, first threaded holes 3 are opened on the relative inner walls of the protection shell 1, first threaded columns 4 are threadedly connected to the insides of the two first threaded holes 3, first bearings are sleeved on the opposite ends of the two first threaded columns 4, first arc-shaped limit plates 5 are fixedly connected to the opposite surfaces of the two first bearings, the same hydraulic cylinder body 2 is overlapped on the opposite surfaces of the two first arc-shaped limit plates 5, the other ends of the two first threaded columns 4 are fixedly connected to the first rotating plate 7, an annular cover plate 8 is overlapped on the top of the protection shell 1, and a first U-shaped fixing seat 9 is fixedly connected to the side of the annular cover plate 8, and the protection shell The surface of the first U-shaped fixing seat 9 is fixedly connected with a second U-shaped fixing seat 10, and the opposite surface of the first U-shaped fixing seat 9 is fixedly connected with a same sliding rod 11, and the surface of the sliding rod 11 is movably sleeved with a sliding cylinder 12, and the surface of the sliding cylinder 12 is fixedly connected with a second threaded column 13, and the second threaded column 13 is movably connected to the inside of the second U-shaped fixing seat 10, and the surface of the second threaded column 13 is threadedly connected with a threaded cap 14, and the top of the threaded cap 14 overlaps with the bottom of the second U-shaped fixing seat 10. By setting the threaded cap 14 and the second threaded column 13, by rotating the threaded cap 14, the threaded cap 14 is rotated on the surface of the second threaded column 13, so that the top of the threaded cap 14 overlaps with the bottom of the second U-shaped fixing seat 10 The parts are far away from each other and can be moved closer and closer, which is convenient for disassembling or fixing the annular cover plate 8. The operation is simple and convenient. A second threaded hole 18 is opened on the top of the annular cover plate 8. The number of the second threaded holes 18 is two. The insides of the two second threaded holes 18 are threadedly connected with third threaded columns 19. The bottom ends of the two third threaded columns 19 are sleeved with second bearings. The bottoms of the two second bearings are fixedly connected with second arc-shaped limit plates 20. The bottoms of the two second arc-shaped limit plates 20 are overlapped with the top of the hydraulic cylinder body 2. The tops of the two third threaded columns 19 are fixedly connected with second rotating plates 24. By setting the first threaded column 4 and the third threaded column 19, by rotating the two first rotating plates 7, The two first rotating plates 7 respectively drive the two first threaded columns 4 to rotate inside the two first threaded holes 3, and the two first threaded columns 4 respectively drive the two first arc-shaped limit plates 5 to approach or move away from each other, so as to facilitate fixing or installing the hydraulic cylinder body 2 through the two first arc-shaped limit plates 5, and by rotating the second rotating plate 24, the second rotating plate 24 drives the third threaded column 19 to rotate inside the second threaded hole 18, so that the third threaded column 19 drives the second arc-shaped limit plate 20 to rise or fall, so as to facilitate fixing or installing the hydraulic cylinder body 2 through the second arc-shaped limit plate 20, and to facilitate fixing or installing hydraulic cylinder bodies 2 of different specifications, and the operation is simple and convenient.

[0027] Specifically, a first rubber pad 6 is disposed on the inner wall of the first arc-shaped limiting plate 5 , and a second rubber pad 21 is disposed on the inner wall of the second arc-shaped limiting plate 20 .

[0028] By adopting the above technical solution, the friction between the first arc-shaped limit plate 5 and the hydraulic cylinder body 2 is increased by the first rubber pad 6, and the friction between the second arc-shaped limit plate 20 and the hydraulic cylinder body 2 is increased by the second rubber pad 21, so that the hydraulic cylinder body 2 is firmly fixed.

[0029] Specifically, a buckle plate 15 is fixedly connected to the surface of the threaded cap 14 .

[0030] By adopting the above technical solution, the threaded cap 14 can be easily adjusted in rotation through the buckle plate 15 .

[0031] Specifically, the top of the second arc-shaped limiting plate 20 is fixedly connected to the limiting column 23 , the top of the annular cover plate 8 is provided with a limiting hole 22 , and the limiting column 23 is movably connected inside the limiting hole 22 .

[0032] By adopting the above technical solution, the limiting column 23 slides inside the limiting hole 22 to limit the second arc-shaped limiting plate 20.

[0033] Specifically, a heat dissipation port 25 is provided on the surface of the protective shell 1 , and a dustproof net 26 is provided inside the heat dissipation port 25 .

[0034] By adopting the above technical solution, the heat dissipation opening 25 ensures normal heat dissipation of the hydraulic cylinder body 2 , and the dustproof net 26 protects the hydraulic cylinder body 2 from dust.

[0035] Specifically, an annular groove 16 is formed on the top of the protective shell 1 , and an annular plate 17 is fixedly connected to the bottom of the annular cover plate 8 , and the annular plate 17 is movably connected inside the annular groove 16 .

[0036] By adopting the above technical solution, the annular plate 17 moves inside the annular groove 16 to limit the annular cover plate 8, thereby facilitating the installation and fixation of the annular cover plate 8.

[0037] The working principle of the utility model is:

[0038] When the utility model is in use, the hydraulic cylinder body 2 is first placed inside the protective shell 1, and the two first rotating plates 7 are rotated so that the two first rotating plates 7 respectively drive the two first threaded columns 4 to rotate inside the two first threaded holes 3, so that the two first threaded columns 4 respectively drive the two first arc-shaped limit plates 5 to approach each other, and the hydraulic cylinder body 2 is fixed by the two first arc-shaped limit plates 5, and the annular cover plate 8 is used to drive the annular plate 17 to be movably connected to the inside of the annular groove 16 through the movable annular cover plate 8, and the second threaded column 13 is movably connected to the second U-shaped fixed Inside the fixed seat 10, by rotating the threaded nut 14, the threaded nut 14 rotates on the surface of the second threaded column 13, so that the top of the threaded nut 14 overlaps with the bottom of the second U-shaped fixed seat 10, and the annular cover plate 8 is fixed. Then, by rotating the second rotating plate 24, the second rotating plate 24 drives the third threaded column 19 to rotate inside the second threaded hole 18, so that the third threaded column 19 drives the second arc-shaped limiting plate 20 to descend, and the limiting column 23 slides inside the limiting hole 22, so that the bottom of the second arc-shaped limiting plate 20 overlaps with the top of the hydraulic cylinder body 2, and the hydraulic cylinder body 2 can be fixed.

[0039] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A protective device for a hydraulic cylinder of an excavator, comprising a protective shell (1), Features: The protective shell (1) is provided with first threaded holes (3) on the opposite inner walls, the first threaded holes (3) are both threadedly connected to the inside with first threaded columns (4), the opposite ends of the two first threaded columns (4) are sleeved with first bearings, the opposite surfaces of the two first bearings are fixedly connected with first arc-shaped limit plates (5), the opposite surfaces of the two first arc-shaped limit plates (5) are overlapped with the same hydraulic cylinder body (2), the other ends of the two first threaded columns (4) are fixedly connected with first rotating plates (7), the top of the protective shell (1) is overlapped with an annular cover plate (8), the side of the annular cover plate (8) is fixedly connected with a first U-shaped fixing seat (9), the surface of the protective shell (1) is fixedly connected with a second U-shaped fixing seat (10), the opposite surface of the first U-shaped fixing seat (9) is fixedly connected with the same sliding rod (11), and the surface of the sliding rod (11) is movably sleeved with a sliding cylinder (12) The surface of the slide cylinder (12) is fixedly connected with a second threaded column (13), the second threaded column (13) is movably connected to the inside of the second U-shaped fixing seat (10), the surface of the second threaded column (13) is threadedly connected with a threaded cap (14), the top of the threaded cap (14) overlaps with the bottom of the second U-shaped fixing seat (10), the top of the annular cover plate (8) is provided with a second threaded hole (18), the number of the second threaded holes (18) is two, the insides of the two second threaded holes (18) are threadedly connected with a third threaded column (19), the bottom ends of the two third threaded columns (19) are both sleeved with a second bearing, the bottoms of the two second bearings are fixedly connected with a second arc-shaped limit plate (20), the bottoms of the two second arc-shaped limit plates (20) overlap with the top of the hydraulic cylinder body (2), and the top ends of the two third threaded columns (19) are fixedly connected with a second rotating plate (24).

2. The hydraulic cylinder protection device for an excavator according to claim 1, Features: A first rubber pad (6) is provided on the inner wall of the first arc-shaped limiting plate (5), and a second rubber pad (21) is provided on the inner wall of the second arc-shaped limiting plate (20).

3. The hydraulic cylinder protection device for an excavator according to claim 1, Features: A buckle plate (15) is fixedly connected to the surface of the threaded cap (14).

4. The excavator hydraulic cylinder protection device according to claim 1, Features: The top of the second arc-shaped limiting plate (20) is fixedly connected to a limiting column (23), the top of the annular cover plate (8) is provided with a limiting hole (22), and the limiting column (23) is movably connected inside the limiting hole (22).

5. The excavator hydraulic cylinder protection device according to claim 1, Features: A heat dissipation opening (25) is provided on the surface of the protective shell (1), and a dustproof net (26) is provided inside the heat dissipation opening (25).

6. The hydraulic cylinder protection device for an excavator according to claim 1, Features: The top of the protective shell (1) is provided with an annular groove (16), the bottom of the annular cover plate (8) is fixedly connected with an annular plate (17), and the annular plate (17) is movably connected inside the annular groove (16).

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