Hydraulic cylinder guide sleeve

Abstract

The utility model discloses a hydraulic oil cylinder guide bushing, including the sleeve body, the sleeve body upper end is provided with the sealing cover, the inside one side of sleeve body is provided with the vertical direction's liquid injection hole, the liquid injection hole upper end penetrates sleeve body upper end, the utility model discloses, through setting can with the cylinder body of hydraulic oil cylinder of sleeve body and be carried out the thread connection of screwing, the first outer sealing ring, second outer sealing ring that set up can improve the sealing property between sleeve body and cylinder body, the first inner sealing ring, second inner sealing ring and third inner sealing ring that set up can improve the sealing property between sleeve body and piston rod, use the connecting bolt and fix the sealing cover with sleeve body, the top sealing ring and sealing groove card setting that set up can improve the sealing property between sealing cover and sleeve body, open the sealing bolt, in the case of disassembling sleeve body, can through the liquid injection hole, liquid inlet hole can inject the lubricating fluid between first inner sealing ring and second inner sealing ring and between second inner sealing ring and third inner sealing ring.

Description

Technical Field

[0001] This utility model relates to the technical field of hydraulic cylinder guide sleeves, and in particular to a hydraulic cylinder guide sleeve. Background Technology

[0002] Hydraulic cylinders are widely used in various mechanical equipment. One of their core components is the guide sleeve. The main function of the guide sleeve is to guide the reciprocating motion of the piston rod and bear the lateral force of the piston rod. During use, the guide sleeve needs to have high wear resistance and stability to ensure the normal operation of the hydraulic cylinder and extend the service life of the equipment.

[0003] Due to the high-frequency contact and high-load operating conditions between the piston rod and the guide sleeve, an oil vacuum zone exists between the sealing rings inside the guide sleeve, causing severe wear on the sealing rings. To overcome these disadvantages, this invention provides a hydraulic cylinder guide sleeve. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a hydraulic cylinder guide sleeve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic cylinder guide sleeve, comprising a sleeve body, a sealing cap provided at the upper end of the sleeve body, a vertical injection hole provided on one side of the inside of the sleeve body, the upper end of the injection hole penetrating the upper end of the sleeve body, a sealing component provided at the upper end of the injection hole, a first groove, a second groove and a third groove sequentially provided on the inner wall of the sleeve body from top to bottom, the first groove, the second groove and the third groove respectively holding a first inner sealing ring, a second inner sealing ring and a third inner sealing ring, and an inlet hole penetrating into the injection hole provided on the inner wall of the sleeve body between the first groove and the second groove, and between the second groove and the third groove.

[0006] Furthermore, the upper end of the outer side of the sleeve is provided with a connecting thread, and a first outer sealing ring and a second outer sealing ring are provided on the outer side of the sleeve at the lower end of the connecting thread.

[0007] Furthermore, the sealing assembly includes a countersunk hole, a second threaded hole, and a sealing bolt. The countersunk hole is located at the upper end of the injection hole, the second threaded hole is located at the lower end of the countersunk hole, the sealing bolt is threadedly connected to the second threaded hole, and a first through hole is provided at the upper end of the sealing cap at a position corresponding to the countersunk hole.

[0008] Furthermore, a sealing groove is provided at the outer ring of the upper end of the sleeve, and a top sealing ring is fixedly connected at the outer ring of the bottom end of the sealing cover, and the top sealing ring is engaged with the sealing groove.

[0009] Furthermore, several first threaded holes are provided at the four corners of the upper end of the sleeve, and slots are provided on both the front and rear sides of the upper end of the sleeve.

[0010] Furthermore, the sealing cover has mounting holes at all four corners, and a second through hole corresponding to the first threaded hole is provided at the upper end of the sealing cover. Each of the second through holes is provided with a connecting bolt that is threaded to the corresponding first threaded hole.

[0011] The beneficial effects of this utility model are:

[0012] In use, the hydraulic cylinder guide sleeve of this utility model can be threadedly connected to the cylinder body of the hydraulic cylinder through the provided connecting threads. The first and second outer sealing rings can improve the sealing performance between the sleeve and the cylinder body, and the first, second, and third inner sealing rings can improve the sealing performance between the sleeve and the piston rod. The sealing cover is fixed to the sleeve body using connecting bolts. The top sealing ring is engaged with the sealing groove, which can improve the sealing performance between the sealing cover and the sleeve body. When the sealing bolts are opened and the sleeve body is disassembled, lubricating fluid can be injected between the first and second inner sealing rings and between the second and third inner sealing rings through the injection hole and the inlet hole. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 : Front view of this utility model;

[0015] Figure 2 : A schematic diagram of the sleeve structure of this utility model;

[0016] Figure 3 : A schematic diagram of the sleeve structure of this utility model;

[0017] Figure 4 : Schematic diagram of the first groove, second groove and third groove of this utility model;

[0018] Figure 5 : Schematic diagram of the injection hole structure of this utility model;

[0019] Figure 6 : Schematic diagram of the sealing cap structure of this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Sleeve body; 2. Sealing cap; 3. Mounting hole; 4. First through hole; 5. Connecting bolt; 6. First threaded hole; 7. Slot; 8. Sealing bolt; 9. Connecting thread; 10. First outer sealing ring; 11. Second outer sealing ring; 12. First inner sealing ring; 13. Second inner sealing ring; 14. Third inner sealing ring; 15. Liquid inlet hole; 16. First groove; 17. Second groove; 18. Third groove; 19. Countersunk hole; 20. Second threaded hole; 21. Liquid injection hole; 22. Sealing groove; 23. Top sealing ring; 24. Second through hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-6 As shown, a hydraulic cylinder guide sleeve is disclosed, comprising a sleeve body 1, a sealing cap 2 at the upper end of the sleeve body 1, a vertical injection hole 21 on one side of the inside of the sleeve body 1, the upper end of the injection hole 21 penetrating the upper end of the sleeve body 1, and a sealing component at the upper end of the injection hole 21. The inner wall of the sleeve body 1 is provided with a first groove 16, a second groove 17 and a third groove 18 from top to bottom. The first groove 16, the second groove 17 and the third groove 18 are respectively fitted with a first inner sealing ring 12, a second inner sealing ring 13 and a third inner sealing ring 14. The inner wall of the sleeve body 1 is provided with inlet holes 15 penetrating into the injection hole 21 at the positions between the first groove 16 and the second groove 17 and between the second groove 17 and the third groove 18.

[0024] As shown in the figure, the upper outer end of the sleeve 1 is provided with a connecting thread 9, and the lower end of the connecting thread 9 on the outer side of the sleeve 1 is provided with a first outer sealing ring 10 and a second outer sealing ring 11. The connecting thread 9 can be used to connect the sleeve 1 to the cylinder body of the hydraulic cylinder. The first outer sealing ring 10 and the second outer sealing ring 11 can improve the sealing between the sleeve 1 and the cylinder body.

[0025] As shown in the figure, the sealing assembly includes a countersunk hole 19, a second threaded hole 20, and a sealing bolt 8. The countersunk hole 19 is located at the upper end of the injection hole 21, and the second threaded hole 20 is located at the lower end of the countersunk hole 19. The sealing bolt 8 is threadedly connected to the second threaded hole 20. A first through hole 4 is provided at the upper end of the sealing cover 2 at the position corresponding to the countersunk hole 19. When the sealing bolt 8 is opened and the sleeve 1 is disassembled, lubricant can be injected between the first inner sealing ring 12 and the second inner sealing ring 13, and between the second inner sealing ring 13 and the third inner sealing ring 14, through the injection hole 21 and the inlet hole 15.

[0026] As shown in the figure, a sealing groove 22 is provided at the outer ring of the upper end of the sleeve 1, and a top sealing ring 23 is fixedly connected to the outer ring of the bottom end of the sealing cover 2. The top sealing ring 23 is engaged with the sealing groove 22. Several first threaded holes 6 are provided at the four corners of the upper end of the sleeve 1. The front and rear sides of the upper end of the sleeve 1 are provided with slots 7. The four corners of the sealing cover 2 are provided with mounting holes 3. The upper end of the sealing cover 2 is provided with a second through hole 24 corresponding to the first threaded hole 6. Each second through hole 24 is provided with a connecting bolt 5 that is threadedly connected to the corresponding first threaded hole 6. The sealing cover 2 and the sleeve 1 are fixed with the connecting bolt 5. The bolt is then used to connect the sealing cover 2 to the cylinder through the mounting hole 3. The top sealing ring 23 is engaged with the sealing groove 22, which can improve the sealing performance between the sealing cover 2 and the sleeve 1.

[0027] Working principle: During use, the sleeve 1 can be threadedly connected to the cylinder body of the hydraulic cylinder through the connecting thread 9. The first outer sealing ring 10 and the second outer sealing ring 11 can improve the sealing performance between the sleeve 1 and the cylinder body. The first inner sealing ring 12, the second inner sealing ring 13 and the third inner sealing ring 14 can improve the sealing performance between the sleeve 1 and the piston rod. The sealing cover 2 is fixed to the sleeve 1 using the connecting bolt 5. The bolt is then connected to the cylinder body through the mounting hole 3. The top sealing ring 23 is engaged with the sealing groove 22, which can improve the sealing performance between the sealing cover 2 and the sleeve 1. When the sealing bolt 8 is opened and the sleeve 1 is disassembled, lubricating fluid can be injected between the first inner sealing ring 12 and the second inner sealing ring 13, and between the second inner sealing ring 13 and the third inner sealing ring 14, through the injection hole 21 and the inlet hole 15.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic cylinder guide sleeve, comprising a sleeve body (1), characterized in that: The upper end of the sleeve (1) is provided with a sealing cap (2). A vertical injection hole (21) is opened on one side inside the sleeve (1). The upper end of the injection hole (21) penetrates the upper end of the sleeve (1). A sealing component is provided at the upper end of the injection hole (21). The inner wall of the sleeve (1) is provided with a first groove (16), a second groove (17) and a third groove (18) from top to bottom. The first groove (16), the second groove (17) and the third groove (18) are respectively fitted with a first inner sealing ring (12), a second inner sealing ring (13) and a third inner sealing ring (14). The inner wall of the sleeve (1) is provided with an inlet hole (15) that penetrates into the injection hole (21) at the positions between the first groove (16) and the second groove (17) and between the second groove (17) and the third groove (18).

2. The hydraulic cylinder guide sleeve according to claim 1, characterized in that: The upper outer end of the sleeve (1) is provided with a connecting thread (9), and the outer side of the sleeve (1) is provided with a first outer sealing ring (10) and a second outer sealing ring (11) at the lower end of the connecting thread (9).

3. A hydraulic cylinder guide sleeve according to claim 1, characterized in that: The sealing assembly includes a countersunk hole (19), a second threaded hole (20), and a sealing bolt (8). The countersunk hole (19) is located at the upper end of the injection hole (21), and the second threaded hole (20) is located at the lower end of the countersunk hole (19). The sealing bolt (8) is threadedly connected to the second threaded hole (20). A first through hole (4) is provided at the upper end of the sealing cap (2) at a position corresponding to the countersunk hole (19).

4. A hydraulic cylinder guide sleeve according to claim 1, characterized in that: A sealing groove (22) is provided at the outer ring of the upper end of the sleeve (1), and a top sealing ring (23) is fixedly connected at the outer ring of the bottom end of the sealing cover (2). The top sealing ring (23) is engaged with the sealing groove (22).

5. A hydraulic cylinder guide sleeve according to claim 1, characterized in that: The sleeve (1) has several first threaded holes (6) at the four corners of its upper end, and the sleeve (1) has slots (7) on both the front and rear sides of its upper end.

6. A hydraulic cylinder guide sleeve according to claim 5, characterized in that: The sealing cover (2) has mounting holes (3) at all four corners. The upper end of the sealing cover (2) has a second through hole (24) corresponding to the first threaded hole (6). The second through hole (24) is provided with a connecting bolt (5) that is threaded to the corresponding first threaded hole (6).

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