Anti-pressurization structure of multi-stage hydraulic oil cylinder
By setting up oil injection holes and oil pipes in the multi-stage hydraulic cylinder, combined with the C-type retaining ring spring and rotating ring structure, the problem of insufficient lubrication of traditional hydraulic cylinders is solved, efficient injection and discharge of lubricating oil is achieved, and equipment temperature rise is avoided and parts are damaged, improving service life and smooth running.
Patent Information
- Application Number
- CN202421071831.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Traditional multi-stage hydraulic cylinders can easily cause sharp rise in equipment temperature, smelting and thermal deformation of parts, resulting in a decrease in accuracy, and difficulty in injecting lubricating oil in time and efficiently, causing friction and abnormal noise, affecting service life.
A multi-stage hydraulic cylinder anti-pressurization structure is designed. By setting oil injection holes and round holes in the cylinder block and base, the oil pipes and sealing plugs are used to achieve lubricating oil injection and discharge, increasing the lubrication of the piston rod, and adopting C-type gear. The ring spring and rotary ring structure are easy to replace and position, reducing friction and abnormal noise.
It effectively avoids rising equipment temperature and damage to parts, improves the service life and smoothness of hydraulic cylinders, prevents rust and friction, and extends the service life of the equipment.
Smart Images
Figure CN222277087U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a multi-stage hydraulic oil cylinder anti-pressurization structure. Background Art
[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. A traditional hydraulic cylinder includes a cylinder body, a piston, a piston rod, and an oil inlet. The movement of the piston and the piston rod is achieved through the flow of hydraulic oil, and various control functions are achieved through external components. The movement of this type of hydraulic rod is linear, and the driven external components also move linearly.
[0003] In the patent document with the announcement number CN209654351U, a new type of multi-stage hydraulic oil cylinder is provided, including a cylinder body and a guide sleeve, wherein the cylinder body is sequentially sleeved with a four-stage piston rod, a three-stage piston rod, a two-stage piston rod, and a one-stage piston rod from the inside to the outside, and the other end of the cylinder body is provided with a cylinder bottom, and the inner holes of one end of the corresponding pistons of the four-stage piston rod, the three-stage piston rod, the two-stage piston rod, and the one-stage piston rod are processed with grooves, and the four-stage piston rod, the three-stage piston rod, the two-stage piston rod, and the one-stage piston rod are assembled step by step from each stage of the piston end, and are installed in the corresponding grooves with corresponding hole wire retaining rings to limit each stage of the piston. The beneficial effects of the utility model are: the threads at both ends of the piston rod are cancelled, the piston limit of the next stage is limited by the hole wire retaining ring, and the guide sleeve part is designed as one with the piston rod and the piston, which well solves the problem of coaxiality out-of-tolerance between the inner hole and the outer circle of the piston rod during the processing and manufacturing process.
[0004] The above device is not convenient for injecting lubricating oil into the piston rod and the inside of the cylinder body during actual use. Since the piston rod and the cylinder body are metal accessories, the temperature of the equipment will rise sharply when they are running for a long time or not running for a long time, and the parts will be sintered to cause failures, and the parts will be greatly thermally deformed, resulting in a decrease in accuracy. Failure to inject lubricating oil into the inside of the piston rod and the cylinder body in a timely and efficient manner will cause them to be easily damaged and produce friction and abnormal noise.
[0005] For this purpose, we propose a multi-stage hydraulic cylinder anti-pressurization structure. Utility Model Content
[0006] In view of the deficiencies of the prior art, the utility model provides a multi-stage hydraulic cylinder anti-pressurization structure, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a multi-stage hydraulic cylinder anti-pressurization structure comprises a cylinder body, the bottom of the cylinder body is fixedly equipped with a base, the outer edge of the base is fixedly equipped with a mounting block 1, the outer side of the mounting block 1 is provided with an oil filling hole, the inner wall of the mounting block 1 is fixedly connected with an oil pipe 1, the end of the oil pipe 1 away from the mounting block 1 is fixedly connected with a mounting seat, the side of the mounting seat away from the oil pipe 1 is fixedly connected with an oil pipe 2, the top of the cylinder body is fixedly equipped with a top seat, the outer edge of the top seat is fixedly equipped with a mounting block 2, the outer side of the mounting block 2 is fixedly connected with an oil filling pipe, the side of the top seat away from the cylinder body is fixedly equipped with a protective seat by a plurality of bolts, the inner wall of the cylinder body is slidably connected with a piston rod, the end of the piston rod away from the cylinder body is fixedly connected with a rotating kit, the inner wall of the rotating kit is symmetrically provided with two card grooves, the inner wall position of the rotating kit is rotatably connected with a rotating ring, and the inner side of the card groove is clamped with a C-shaped retaining ring retaining spring.
[0008] As a preferred technical solution of the utility model, a sealing plug is clamped on the inner wall of the oil filling hole, and the sealing plug is made of rubber. The oil filling hole is communicated with the circular hole, and one end of the oil pipe 2 away from the mounting seat is fixedly connected to the inner cavity of the mounting block 2. The top of the mounting block 2 is also provided with an oil filling hole, and the oil filling hole is communicated with the inner cavity of the top seat.
[0009] By adopting the above technical solution, lubricating oil can be injected into the inner cavity position of the oil filling hole, and then injected into the inner wall positions of the cylinder body, the base and the mounting block 2 through the oil filling hole and the circular hole respectively, so as to lubricate the components of the inner cavity of the cylinder body, the base and the mounting block 2, thereby increasing their service life and ensuring that they will not easily rust.
[0010] As a preferred technical solution of the utility model, the mounting seat is fixedly connected to the outer edge of the cylinder body, and two circular grooves are symmetrically provided on the top of the mounting seat.
[0011] By adopting the above technical solution, the lubricating oil can be injected into the inner cavity position of the mounting seat through the circular groove, and then discharged to the inner cavity positions of mounting block one and mounting block two respectively using oil pipe one and oil pipe two, thereby improving the efficiency of injecting the lubricating oil into the inner cavity positions of the base and the top seat.
[0012] As a preferred technical solution of the utility model, two through holes are opened on both sides of the C-shaped retaining ring retaining spring, the number of the C-shaped retaining ring retaining springs is two, and the two C-shaped retaining ring retaining springs are clamped on the inner wall positions of the two clamping grooves, and the rotating ring is arranged in the middle position of the two C-shaped retaining ring retaining springs.
[0013] By adopting the above technical solution, the staff can insert the tool into the middle position of the two through holes, and then squeeze it towards the middle position, and then the C-shaped retaining ring spring can be removed from the inner wall position of the groove, thereby facilitating the removal of the rotating ring to the outside for replacement.
[0014] As a preferred technical solution of the utility model, an oil leakage hole is opened through the outer side of the rotating kit, there are two rotating kits, and the rotating kit on the side away from the protective seat is fixedly connected to the bottom position of the base.
[0015] By adopting the above technical solution, lubricating oil can be injected into the inner wall of the rotating sleeve through the oil leakage hole, thereby increasing the smoothness of the rotation of the rotating ring on the inner wall of the rotating sleeve, ensuring that the rotating ring will not generate severe friction with the inner wall of the rotating sleeve during rotation, causing abnormal noise.
[0016] As a preferred technical solution of the utility model, the end of the oil filling tube away from the mounting block 2 is arranged at the outermost position of the top seat and the inner wall of the oil filling tube, and the distance between the outer edge of the piston rod and the end of the oil filling tube away from the mounting block 2 is 0.5 cm.
[0017] By adopting the above technical solution, the lubricating oil can be discharged directly to the outer edge of the piston rod through the oil filling pipe when the piston rod is in the extension and retraction period, ensuring that no friction and abnormal noise are generated when the piston rod is in the cylinder inner wall extension and retraction period, thereby ensuring smoothness during operation.
[0018] Beneficial effects of the utility model:
[0019] 1. By injecting lubricating oil into the inner cavity position of the oil filling hole, and then using the oil filling hole and the round hole to inject the inner wall position of the cylinder body, base and mounting block 2 respectively, the components of the inner cavity of the cylinder body, base and mounting block 2 are lubricated. When the piston rod is in the extension and retraction time, the lubricating oil is directly discharged to the outer edge of the piston rod through the oil filling pipe to ensure that the piston rod will not generate friction and abnormal noise when it is in the extension and retraction of the inner wall of the cylinder, avoiding the problem of failure to timely and efficiently inject lubricating oil into the piston rod and the inside of the cylinder, which will cause them to be easily damaged and generate friction and abnormal noise, thereby solving the problem of rapid increase in equipment temperature, sintering of parts to cause failures, and large thermal deformation of parts resulting in reduced accuracy.
[0020] 2. By inserting the tool into the middle position of the two through holes and then squeezing it toward the middle position, the C-shaped retaining ring can be removed from the inner wall position of the slot, making it easier to remove the rotating ring to the outside for replacement. After installing the two C-shaped retaining ring retaining rings to the inner wall positions of the two slots, the rotating ring can be positioned to ensure that it will not easily separate from the inner wall position of the rotating kit when rotating. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1It is a three-dimensional structural schematic diagram of the utility model;
[0022] Figure 2 It is a partial structural schematic diagram of the utility model;
[0023] Figure 3 This is a schematic diagram of the piston rod structure of the utility model;
[0024] Figure 4 It is a schematic diagram of the expanded structure of the utility model.
[0025] In the figure: 1. cylinder body; 2. base; 3. mounting block 1; 4. oil filling hole; 5. sealing plug; 6. oil pipe 1; 7. mounting seat; 8. oil pipe 2; 9. top seat; 10. mounting block 2; 11. oil filling pipe; 12. protective seat; 13. bolt; 14. piston rod; 15. rotating kit; 16. rotating ring; 17. slot; 18. C-type retaining ring spring; 19. through hole; 20. round hole; 21. oil leakage hole. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] See also Figure 1 - Figure 4 A multi-stage hydraulic cylinder pressure-increasing prevention structure comprises a cylinder body 1, a base 2 is fixedly mounted on the bottom of the cylinder body 1, a mounting block 3 is fixedly mounted on the outer edge of the base 2, an oil filling hole 4 is opened on the outer side of the mounting block 3, an oil pipe 6 is fixedly connected to the inner wall of the mounting block 3, an end of the oil pipe 6 away from the mounting block 3 is fixedly connected to a mounting seat 7, a side of the mounting seat 7 away from the oil pipe 6 is fixedly connected to an oil pipe 8, a top seat 9 is fixedly mounted on the top of the cylinder body 1, and a mounting hole 4 is fixedly mounted on the outer edge of the top seat 9. Mounting block 10, the outer side of mounting block 10 is fixedly connected with an oil filling pipe 11, the side of top seat 9 away from cylinder body 1 is fixedly installed with a protective seat 12 through a plurality of bolts 13, the inner wall of cylinder body 1 is slidably connected with a piston rod 14, the end of piston rod 14 away from cylinder body 1 is fixedly connected with a rotating kit 15, the inner wall of rotating kit 15 is symmetrically provided with two grooves 17, the inner wall position of rotating kit 15 is rotatably connected with a rotating ring 16, the inner side of the groove 17 is clamped with a C-shaped retaining ring spring 18.
[0028] See also Figure 2The inner wall of the oil filling hole 4 is clamped with a sealing plug 5, which is made of rubber. The oil filling hole 4 is communicated with the circular hole 20. The end of the oil pipe 8 away from the mounting seat 7 is fixedly connected to the inner cavity of the mounting block 10. The top of the mounting block 10 is also provided with an oil filling hole 4, and the oil filling hole 4 is communicated with the inner cavity of the top seat 9, so that lubricating oil can be injected into the inner cavity position of the oil filling hole 4, and then injected into the inner wall positions of the cylinder body 1, the base 2 and the mounting block 10 by using the oil filling hole 4 and the circular hole 20 respectively, which plays a lubricating role on the components of the inner cavity of the cylinder body 1, the base 2 and the mounting block 10, thereby improving their service life and ensuring that they will not rust easily.
[0029] See also Figure 1 and Figure 2 The mounting seat 7 is fixedly connected to the outer edge of the cylinder body 1, and two circular grooves are symmetrically provided on the top of the mounting seat 7, so that the lubricating oil can be injected into the inner cavity of the mounting seat 7 through the circular grooves, and then the oil pipe 1 6 and the oil pipe 2 8 can be used to discharge the lubricating oil to the inner cavity of the mounting block 1 3 and the mounting block 2 10 respectively, thereby improving the efficiency of injecting the lubricating oil into the inner cavity of the base 2 and the top seat 9.
[0030] See also Figure 4 There are two through holes 19 on both sides of the C-shaped retaining ring spring 18. There are two C-shaped retaining ring springs 18, and the two C-shaped retaining ring springs 18 are clamped on the inner wall positions of the two clamping grooves 17. The rotating ring 16 is set in the middle position of the two C-shaped retaining ring springs 18, so that the staff can insert the tool into the middle position of the two through holes 19, and then squeeze it towards the middle position, and then the C-shaped retaining ring spring 18 can be taken out from the inner wall position of the clamping groove 17, which makes it easy to take out the rotating ring 16 to the outside for replacement.
[0031] See also Figure 1 An oil leakage hole 21 is formed on the outer side of the rotating sleeve 15. There are two rotating sleeves 15, and the rotating sleeve 15 on the side away from the protective seat 12 is fixedly connected to the bottom position of the base 2, so that the lubricating oil can be injected into the inner wall position of the rotating sleeve 15 through the oil leakage hole 21, thereby increasing the smoothness of the rotation of the rotating ring 16 on the inner wall position of the rotating sleeve 15, and ensuring that the rotating ring 16 will not generate severe friction with the inner wall of the rotating sleeve 15 and cause abnormal noise when rotating.
[0032] See also Figure 2 and Figure 3The end of the oil filling pipe 11 away from the mounting block 10 is arranged at the outermost position of the inner wall of the top seat 9 and the oil filling pipe 11. The distance between the outer edge of the piston rod 14 and the end of the oil filling pipe 11 away from the mounting block 10 is 0.5 cm, so that the lubricating oil can be directly discharged to the outer edge of the piston rod 14 through the oil filling pipe 11 when the piston rod 14 is in the extension and retraction time, ensuring that the piston rod 14 will not generate friction and abnormal noise when the inner wall of the cylinder body 1 is extended and retracted, thereby ensuring smoothness during operation.
[0033] Working principle: When using the device, first, the tool can be inserted into the middle position of the two through holes 19, and then squeezed toward the middle position, and then the C-shaped retaining ring spring 18 can be taken out from the inner wall position of the slot 17, so as to facilitate the removal of the rotating ring 16 to the outside for replacement. After the two C-shaped retaining ring springs 18 are installed to the inner wall positions of the two slots 17, the rotating ring 16 can be positioned to ensure that it will not easily separate from the inner wall position of the rotating kit 15 when rotating. By injecting lubricating oil into the inner cavity position of the oil filling hole 4, and then using the oil filling hole 4 and the circular hole 20 to inject the inner wall positions of the cylinder body 1, the base 2 and the mounting block 2 10 respectively, the components of the inner cavity of the cylinder body 1, the base 2 and the mounting block 2 10 are lubricated, thereby increasing their service life and ensuring that they will not easily rust. The lubricating oil is directly discharged to the outer edge position of the piston rod 14 through the oil filling pipe 11 when the piston rod 14 is in the extension time, ensuring that the piston rod 14 will not generate friction and abnormal noise when the inner wall of the cylinder body 1 is extended, thereby ensuring smoothness during operation.
[0034] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A multi-stage hydraulic cylinder anti-pressurization structure, comprising a cylinder body (1), characterized in that: The bottom of the cylinder body (1) is fixedly equipped with a base (2), the outer edge of the base (2) is fixedly equipped with a mounting block (3), the outer side of the mounting block (3) is provided with an oil filling hole (4), the inner wall of the mounting block (3) is fixedly connected with an oil pipe (6), the end of the oil pipe (6) away from the mounting block (3) is fixedly connected with a mounting seat (7), the side of the mounting seat (7) away from the oil pipe (6) is fixedly connected with an oil pipe (8), the top of the cylinder body (1) is fixedly equipped with a top seat (9), the outer edge of the top seat (9) is fixedly equipped with a mounting block (10), the The outer side of the second mounting block (10) is fixedly connected with an oil filling pipe (11); a protective seat (12) is fixedly installed on the side of the top seat (9) away from the cylinder body (1) through a plurality of bolts (13); a piston rod (14) is slidably connected to the inner wall of the cylinder body (1); an end of the piston rod (14) away from the cylinder body (1) is fixedly connected with a rotating sleeve (15); two grooves (17) are symmetrically provided on the inner wall of the rotating sleeve (15); a rotating ring (16) is rotatably connected to the inner wall of the rotating sleeve (15); and a C-shaped retaining ring spring (18) is clamped on the inner side of the groove (17).
2. The multi-stage hydraulic cylinder pressure-increasing prevention structure according to claim 1, characterized in that: The inner wall of the oil filling hole (4) is clamped with a sealing plug (5), and the sealing plug (5) is made of rubber. The oil filling hole (4) is communicated with the circular hole (20). The end of the oil pipe (8) away from the mounting seat (7) is fixedly connected to the inner cavity of the mounting block (10). The top of the mounting block (10) is also provided with an oil filling hole (4), and the oil filling hole (4) is communicated with the inner cavity of the top seat (9).
3. The multi-stage hydraulic cylinder pressure-increasing prevention structure according to claim 1, characterized in that: The mounting seat (7) is fixedly connected to the outer edge of the cylinder body (1), and two circular grooves are symmetrically formed on the top of the mounting seat (7).
4. The multi-stage hydraulic cylinder pressure-increasing prevention structure according to claim 1, characterized in that: Two through holes (19) are provided on both sides of the C-shaped retaining ring retaining spring (18). The number of the C-shaped retaining ring retaining springs (18) is two, and the two C-shaped retaining ring retaining springs (18) are clamped on the inner wall positions of the two clamping grooves (17). The rotating ring (16) is arranged in the middle position of the two C-shaped retaining ring retaining springs (18).
5. The multi-stage hydraulic cylinder anti-pressurization structure according to claim 1, characterized in that: An oil leakage hole (21) is formed through the outer side of the rotating sleeve (15). There are two rotating sleeves (15), and the rotating sleeve (15) on the side away from the protective seat (12) is fixedly connected to the bottom of the base (2).
6. The multi-stage hydraulic cylinder pressure-increasing prevention structure according to claim 1, characterized in that: The end of the oil filling pipe (11) away from the second mounting block (10) is arranged at the outermost position of the inner wall of the top seat (9) and the oil filling pipe (11), and the distance between the outer edge of the piston rod (14) and the end of the oil filling pipe (11) away from the second mounting block (10) is 0.5 cm.