Wear-resistant hydraulic column

Abstract

The utility model discloses a wear -resisting type hydraulic stand relates to mechanical auxiliary equipment technical field, specifically is a wear -resisting type hydraulic stand, including hydraulic cylinder body, the inside of hydraulic cylinder body is provided with chamber, the top of hydraulic cylinder body is provided with mounting hole, the side of hydraulic cylinder body is provided with oil inlet close to bottom, the other side of hydraulic cylinder body is provided with oil outlet close to bottom, the oil inlet and oil outlet are about the symmetry of the central axis of hydraulic cylinder body, the inner surface sliding of chamber is connected with piston, the outside of piston is provided with first sealing washer installation groove, the inner surface of first sealing washer installation groove is connected with first sealing washer, the material of first sealing washer is rubber, the top center of piston is fixedly connected with support rod, the top of support rod is provided with first thread hole. This wear -resisting type hydraulic stand has the beneficial effect of convenient maintenance, wear -resisting.

Description

Technical Field

[0001] This utility model relates to the field of mechanical auxiliary equipment technology, specifically a wear-resistant hydraulic column. Background Technology

[0002] Hydraulic columns are the main working mechanism of hydraulic supports, used to bear the load of the roof and adjust the support height. They possess high strength and excellent sealing performance. Hydraulic columns are widely used in mining, tunneling, and other engineering projects as an important component of the support structure, ensuring construction safety and stability. Operating under high pressure, they require excellent sealing performance and durability to meet long-term service needs.

[0003] The single telescopic hydraulic prop is a new type of environmentally friendly support equipment. It can be used in conjunction with metal articulated roof beams for roof support in high-grade conventional mining and blasting faces, as well as for end support in fully mechanized mining faces. It can also be used independently as a point support or for other temporary support purposes. The single telescopic hydraulic prop is suitable for inclined coal seams with a dip angle of less than 25-35 degrees. The appropriate roof and floor conditions are: roof slumping should not affect prop recovery; the floor should not be too soft; and the prop's penetration depth into the floor should not deteriorate the floor's integrity. Otherwise, the base should be enlarged. When used in blasting faces with relatively soft coal, protective measures should be taken for the surface coating of the prop to prevent damage. When the prop is used in conjunction with a wooden roof beam or as a point support, the top cover should be replaced with a prop cap to avoid damaging the wooden beam. Single telescopic hydraulic props are mainly divided into suspended, double telescopic suspended, DN internal injection, and fiberglass single telescopic hydraulic props.

[0004] In existing technologies, the cylinders inside a single telescopic hydraulic column are prone to wear, which reduces the service life of the single telescopic hydraulic column, and the structure is complex and inconvenient to maintain. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a wear-resistant hydraulic column, which solves the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a wear-resistant hydraulic column, including a hydraulic cylinder body, the hydraulic cylinder body having a chamber inside, a mounting hole at the top of the hydraulic cylinder body, an oil inlet on one side near the bottom of the hydraulic cylinder body, and an oil outlet on the other side near the bottom of the hydraulic cylinder body, the oil inlet and the oil outlet being symmetrical about the central axis of the hydraulic cylinder body.

[0009] Optionally, a piston is slidably connected to the inner surface of the chamber, and a first sealing ring mounting groove is provided on the outer side of the piston. A first sealing ring is snapped into the inner surface of the first sealing ring mounting groove. The first sealing ring is made of rubber. A support rod is fixedly connected to the top center of the piston. A first threaded hole is provided on the top of the support rod. A screw is threadedly connected to the inner surface of the first threaded hole. A first connector is fixedly connected to the top of the screw. A second connector is fixedly connected to the bottom of the hydraulic cylinder.

[0010] Optionally, a mounting base is fixedly connected to the top center of the piston. The outer surface of the mounting base is machined with external threads, and a protective sleeve is threadedly connected to the outer surface of the mounting base. One end of the protective sleeve is machined with internal threads.

[0011] Optionally, the inner surface of the mounting hole is provided with a second sealing ring mounting groove, the inner surface of the second sealing ring mounting groove is fitted with a second sealing ring, the inner surface of the mounting hole is inserted into a lubricating oil storage tank, the top of the hydraulic cylinder is provided with a positioning groove, the top of the positioning groove is provided with a second threaded hole, and the number of the second threaded holes is two and they are centrally symmetrical.

[0012] Optionally, a positioning element is fixedly connected to the outer side of the lubricating oil storage tank. There are two positioning elements, and a third threaded hole is opened on the top of the positioning element. The inner surface of the second threaded hole and the inner surface of the third threaded hole are connected by bolt threads.

[0013] Optionally, the lubricating oil storage tank is circular in shape, with an oil outlet groove on the inner side of the lubricating oil storage tank, and an oil outlet hole on the inner surface of the oil outlet groove. The number of oil outlet holes is several, and an oil-absorbing cotton is attached to the inner surface of the oil outlet groove.

[0014] This utility model provides a wear-resistant hydraulic column, which has the following beneficial effects:

[0015] 1. This wear-resistant hydraulic column, through the setting of protective sleeve and mounting base, achieves wear resistance. Through the cooperation of protective sleeve and mounting base, the protective sleeve can be threaded onto the mounting base during use, thereby protecting the support rod from wear and achieving the purpose of wear resistance.

[0016] 2. This wear-resistant hydraulic column, through the design of a lubricating oil storage tank, oil outlet groove, oil outlet hole, oil-coated cotton, and protective sleeve, achieves wear resistance. The lubricating oil in the storage tank flows out through the oil outlet hole during use, wetting the oil-coated cotton and thus coating the outer surface of the protective sleeve with a layer of lubricating oil, thereby protecting the sleeve and achieving wear resistance.

[0017] 3. This wear-resistant hydraulic column, through the design of the protective sleeve and mounting base, facilitates maintenance. The protective sleeve and mounting base work together to allow for easy removal and replacement during use by simply rotating the sleeve, thus simplifying maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the screw structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the connecting groove of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the oil-coated cotton of this utility model.

[0022] Figure 5 This is a schematic diagram of the oil outlet hole of this utility model.

[0023] Figure 6 This is a cross-sectional structural diagram of the hydraulic cylinder body of this utility model.

[0024] Figure 7 This is a schematic diagram of the piston structure of this utility model.

[0025] In the diagram: 1. Hydraulic cylinder body; 2. Chamber; 3. Mounting hole; 4. Oil inlet; 5. Oil outlet; 6. Piston; 7. First sealing ring mounting groove; 8. First sealing ring; 9. Support rod; 10. First threaded hole; 11. Screw; 12. First connector; 13. Mounting base; 14. Protective sleeve; 15. Second sealing ring mounting groove; 16. Second sealing ring; 17. Lubricating oil storage tank; 18. Positioning groove; 19. Second threaded hole; 20. Positioning component; 21. Third threaded hole; 22. Bolt; 23. Oil outlet groove; 24. Oil outlet hole; 25. Oil cloth; 26. Second connector. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example

[0028] Please see Figures 1 to 7 This utility model provides a technical solution: a wear-resistant hydraulic column, including a hydraulic cylinder body 1, a chamber 2 inside the hydraulic cylinder body 1, a mounting hole 3 on the top of the hydraulic cylinder body 1, an oil inlet 4 on one side near the bottom of the hydraulic cylinder body 1, and an oil outlet 5 on the other side near the bottom of the hydraulic cylinder body 1. One-way valves are respectively connected to one side of the oil inlet 4 and the oil outlet 5. The oil inlet 4 and the oil outlet 5 are symmetrical about the central axis of the hydraulic cylinder body 1. A piston 6 is slidably connected to the inner surface of the chamber 2. A first sealing ring mounting groove 7 is formed on the outer side of the piston 6. A first sealing ring 8 is engaged on the inner surface of the first sealing ring mounting groove 7. The first sealing ring 8 prevents hydraulic oil from leaking into the top of the piston 6. The first sealing ring 8 is made of rubber. A support rod 9 is fixedly connected to the center of the top of the piston 6. A first threaded hole 10 is formed on the top of the support rod 9. The inner surface of the first threaded hole 10... A screw 11 is threaded onto the hydraulic cylinder 1. A first connector 12 is fixedly connected to the top of the screw 11. A second connector 26 is fixedly connected to the bottom of the hydraulic cylinder 1. A mounting base 13 is fixedly connected to the top center of the piston 6. The outer surface of the mounting base 13 is machined with external threads. A protective sleeve 14 is threaded onto the outer surface of the mounting base 13. One end of the protective sleeve 14 is machined with internal threads. Through the cooperation between the protective sleeve 14 and the mounting base 13, the protective sleeve 14 can be threaded onto the mounting base 13 during use, thereby protecting the support rod 9 from wear and achieving the purpose of wear resistance. Furthermore, through the cooperation between the protective sleeve 14 and the mounting base 13, the protective sleeve 14 can be removed and replaced by rotation during use, thus facilitating the replacement of the protective sleeve 14 and achieving the purpose of convenient maintenance.

[0029] The inner surface of the mounting hole 3 is provided with a second sealing ring mounting groove 15. A second sealing ring 16 is snapped into the inner surface of the second sealing ring mounting groove 15. The second sealing ring 16 can prevent dust from entering the interior of the hydraulic cylinder body 1. A lubricating oil storage tank 17 is inserted into the inner surface of the mounting hole 3. A positioning groove 18 is provided on the top of the hydraulic cylinder body 1. A second threaded hole 19 is provided on the top of the positioning groove 18. There are two second threaded holes 19, which are centrally symmetrical. A positioning element 20 is fixedly connected to the outer side of the lubricating oil storage tank 17. There are two positioning elements 20. The positioning elements 20 are adapted to the positioning groove 18 to facilitate the installation of the lubricating oil storage tank 17. A third threaded hole 2 is provided on the top of the positioning element 20. 1. The inner surfaces of the second threaded hole 19 and the third threaded hole 21 are connected by bolts 22. The lubricating oil storage tank 17 is annular in shape. An oil outlet groove 23 is provided on the inner side of the lubricating oil storage tank 17. An oil outlet hole 24 is provided on the inner surface of the oil outlet groove 23. There are several oil outlet holes 24. An oil-soaked cotton cloth 25 is attached to the inner surface of the oil outlet groove 23. Through the cooperation of the lubricating oil storage tank 17 and the protective sleeve 14, the lubricating oil in the lubricating oil storage tank 17 flows out through the oil outlet hole 24 and wets the oil-soaked cotton cloth 25 during use, thereby covering a layer of lubricating oil on the outer surface of the protective sleeve 14, thus protecting the protective sleeve 14 and achieving the purpose of wear resistance.

[0030] During use, mechanical wear occurs between the reciprocating motion of the support rod 9 and the hydraulic cylinder. A protective sleeve 14 is fitted onto the inner surface of the support rod 9 by mounting the base 13, thus protecting the support rod 9 from wear. A lubricating oil storage tank 17 is installed on the top of the hydraulic cylinder 1, allowing the lubricating oil flowing from the oil outlet 24 on the inner side of the lubricating oil storage tank 17 to wet the oil-soaked cotton cloth 25. When the support rod 9 reciprocates, lubricating oil is spread on the outer surface of the protective sleeve 14, thereby reducing the wear of the protective sleeve 14. The wear condition of the protective sleeve 14 is checked regularly, and when it needs to be replaced, it can be removed and replaced simply by rotating it, which is convenient and quick.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wear resistant hydraulic column comprising a hydraulic cylinder body (1), characterized in that: The hydraulic cylinder body (1) has a chamber (2) inside, a mounting hole (3) on the top of the hydraulic cylinder body (1), an oil inlet (4) on one side near the bottom of the hydraulic cylinder body (1), and an oil outlet (5) on the other side near the bottom of the hydraulic cylinder body (1). The oil inlet (4) and the oil outlet (5) are symmetrical about the central axis of the hydraulic cylinder body (1).

2. A wear resistant hydraulic column according to claim 1, wherein: A piston (6) is slidably connected to the inner surface of the chamber (2). A first sealing ring mounting groove (7) is provided on the outer side of the piston (6). A first sealing ring (8) is snapped onto the inner surface of the first sealing ring mounting groove (7). The first sealing ring (8) is made of rubber. A support rod (9) is fixedly connected to the top center of the piston (6). A first threaded hole (10) is provided on the top of the support rod (9). A screw (11) is threadedly connected to the inner surface of the first threaded hole (10). A first connector (12) is fixedly connected to the top of the screw (11). A second connector (26) is fixedly connected to the bottom of the hydraulic cylinder (1).

3. A wear resistant hydraulic column according to claim 2, wherein: The piston (6) is fixedly connected to the top center of the mounting base (13), the outer surface of the mounting base (13) is machined with external threads, the outer surface of the mounting base (13) is threaded with a protective sleeve (14), and one end of the protective sleeve (14) is machined with internal threads.

4. The wear resistant hydraulic column of claim 1, wherein: The inner surface of the mounting hole (3) is provided with a second sealing ring mounting groove (15), and a second sealing ring (16) is snapped into the inner surface of the second sealing ring mounting groove (15). A lubricating oil storage tank (17) is inserted into the inner surface of the mounting hole (3). A positioning groove (18) is provided at the top of the hydraulic cylinder body (1). A second threaded hole (19) is provided at the top of the positioning groove (18). There are two second threaded holes (19) and they are centrally symmetrical.

5. A wear resistant hydraulic column according to claim 4, wherein: The outer side of the lubricating oil storage tank (17) is fixedly connected with a positioning member (20). There are two positioning members (20). The top of the positioning member (20) is provided with a third threaded hole (21). The inner surface of the second threaded hole (19) and the inner surface of the third threaded hole (21) are connected by bolts (22).

6. A wear-resistant hydraulic column according to claim 4, characterized in that: The lubricating oil storage tank (17) is circular in shape. An oil outlet groove (23) is provided on the inner side of the lubricating oil storage tank (17). An oil outlet hole (24) is provided on the inner surface of the oil outlet groove (23). There are several oil outlet holes (24). An oil cloth (25) is attached to the inner surface of the oil outlet groove (23).

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