High-sealing-performance split type piston for speed reducer
By designing high-sealing split pistons and applying zirconia coatings, the problem of rising maintenance costs caused by damage to reducer pistons in high temperature and high pressure environments is solved, and the pistons are easily repaired and service life is extended.
Patent Information
- Application Number
- CN202323597855.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-28
AI Technical Summary
The piston on the reducer is easily damaged in high temperature and high pressure environments, resulting in increased maintenance costs because the entire piston needs to be replaced.
A high-sealing split piston is designed, including the piston body and split top cover. The split top cover is removed and replaced by a limiting block and sealing gasket for easy maintenance, and oxidation is applied on the piston pin and connecting rod. Zirconium coating and HM hydraulic oil to reduce friction.
It realizes high sealing and convenient maintenance of the piston, reduces maintenance costs, and extends the service life of the piston pins and connecting rods.
Smart Images
Figure CN222163525U_ABST
Abstract
Description
Technical Field
[0001] The utility model application relates to the technical field of pistons, in particular to a high-sealing split piston for a reducer. Background Art
[0002] Reducers are generally used for low-speed and high-torque transmission equipment. The power of electric motors, internal combustion engines or other high-speed running engines is decelerated by meshing the gear with fewer teeth on the input shaft of the reducer with the large gear on the output shaft. Ordinary reducers will also have several pairs of gears with the same principle to achieve the ideal deceleration effect. The ratio of the number of teeth of large and small gears is the transmission ratio. The piston refers to the piston on the reducer.
[0003] When the piston on the current reducer is in use, the upper surface often works in a high temperature and high pressure environment, which makes the upper surface of the piston easy to be damaged. When the piston is damaged and needs to be replaced, it is often necessary to replace the entire piston, which increases the maintenance cost of the piston. Summary of the invention
[0004] In order to solve the problem that when a piston is damaged and needs to be replaced, the entire piston often needs to be replaced, thereby increasing the maintenance cost of the piston, the utility model provides a high-sealing split piston for a reducer to solve the above problem.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A high-sealing split piston for a reducer comprises a piston body and a split top cover, wherein a first sealing gasket is fixed to the top of the piston body, a limiting groove is provided at the center of the top surface of the piston body, a limiting block is fixed inside the limiting groove, a split top cover is arranged above the first sealing gasket, a second sealing gasket is fixed to the bottom surface of the split top cover, and a fixing block is fixed to the bottom surface of the split top cover.
[0007] Furthermore, a piston pin is rotatably connected to the lower part of the piston body, a ring is rotatably sleeved on the middle part of the piston pin, and a connecting rod is rotatably sleeved on the ring.
[0008] Furthermore, the radius of the top surface of the piston body is the same as the radius of the split top cover, the first sealing gasket and the second sealing gasket are both annular in shape, and the radius of the first sealing gasket and the second sealing gasket is equal to the radius of the piston body and the split top cover.
[0009] Furthermore, the top surface of the limiting block exceeds the top surface of the first sealing gasket, and the height of the limiting block is equal to the height of the fixing block.
[0010] Furthermore, the shape of the fixing block is an inverted "T" shape, a groove matching the shape of the fixing block is provided inside the limiting block, and the height of the groove inside the limiting block is greater than the height below the fixing block.
[0011] Furthermore, the outer surface of the collar is flush with the outer surface of the piston pin, and the outer surfaces of the connecting rod, the piston pin and the collar are all coated with zirconium oxide coating and HM hydraulic oil.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. In the utility model, the split top cover structure is used to fix the split top cover by engaging the limit block and the fixing block with the top surface of the piston body, and then the second sealing gasket and the first sealing gasket are fixed to the bottom surface of the split top cover and the top surface of the piston body respectively. During operation, the second sealing gasket and the first sealing gasket are closed and squeezed, so that the split top cover will not leak pressure, which realizes the operation of the piston and makes the split top cover easy to repair, and solves the problem that when the piston is damaged and needs to be replaced, the entire piston often needs to be replaced, thereby increasing the repair cost of the piston.
[0014] 2. In the utility model, the connecting rod is rotatably sleeved on the sleeve through the sleeve structure, and the sleeve is rotatably connected with the piston pin. Then, the zirconium oxide coating and HM hydraulic oil coated on the outer surfaces of the connecting rod, the piston pin and the sleeve are used for anti-wear, thereby avoiding equipment damage caused by friction between the connecting rod and the piston pin due to direct contact between the connecting rod and the piston pin when the piston moves, thereby extending the service life of the connecting rod and the piston pin. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0016] Figure 1 is a schematic diagram of a three-dimensional structure according to an embodiment of the present application;
[0017] Figure 2 yes Figure 1 A schematic diagram of a three-dimensional structure in the embodiment shown;
[0018] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the cross-sectional structure in the illustrated embodiment;
[0019] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the cross-sectional structure in the illustrated embodiment.
[0020] The meanings of the reference numerals in the figure are: 1. piston body; 2. split top cover; 3. first sealing gasket; 4. second sealing gasket; 5. connecting rod; 6. piston pin; 7. collar; 8. limiting groove; 9. limiting block; 10. fixing block. DETAILED DESCRIPTION
[0021] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A high-sealing split piston for a reducer includes a piston body 1 and a split top cover 2. A first sealing gasket 3 is fixed to the top of the piston body 1. A limiting groove 8 is provided at the center of the top surface of the piston body 1. A limiting block 9 is fixed inside the limiting groove 8. A split top cover 2 is arranged above the first sealing gasket 3. A second sealing gasket 4 is fixed to the bottom surface of the split top cover 2. A fixing block 10 is fixed to the bottom surface of the split top cover 2, so that the top of the piston body 1 can be disassembled.
[0023] Specifically, the radius of the top surface of the piston body 1 is the same as the radius of the split top cover 2, the shapes of the first sealing gasket 3 and the second sealing gasket 4 are both annular, and the radius of the first sealing gasket 3 and the second sealing gasket 4 are equal to the radius of the piston body 1 and the split top cover 2, so that the second sealing gasket 4 and the first sealing gasket 3 are conveniently squeezed and sealed, the top surface of the limit block 9 exceeds the top surface of the first sealing gasket 3, the height of the limit block 9 is equal to the height of the fixed block 10, so that the fixed block 10 can be easily engaged into the inside of the limit block 9, the shape of the fixed block 10 is an inverted "T" shape, and a groove matching the shape of the fixed block 10 is opened inside the limit block 9, and the height of the groove inside the limit block 9 is greater than the height below the fixed block 10, so that the split top cover 2 has movable space.
[0024] As an optimization solution, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a piston pin 6 is rotatably connected to the lower part of the piston body 1, a collar 7 is rotatably sleeved on the middle part of the piston pin 6, and a connecting rod 5 is rotatably sleeved on the collar 7, so that the friction between the connecting rod 5 and the piston pin 6 is reduced.
[0025] Specifically, the outer surface of the collar 7 is flush with the outer surface of the piston pin 6, and the outer surfaces of the connecting rod 5, the piston pin 6 and the collar 7 are all coated with zirconium oxide coating and HM hydraulic oil, which enhances the wear resistance of the connecting rod 5, the piston pin 6 and the collar 7.
[0026] Working principle: When installing the split top cover 2, the fixing block 10 is engaged into the inside of the limit block 9, so that the limit block 9 limits the fixing block 10, so that the split top cover 2 is engaged and fixed to the top surface of the piston body 1. When the piston body 1 reciprocates in the cylinder, the gas squeezes the split top cover 2, so that the split top cover 2 moves toward the piston body 1 and fits. At the same time, the second sealing gasket 4 and the first sealing gasket 3 fit and squeeze and seal. When the split top cover 2 is damaged, the piston body 1 is taken out and the split top cover 2 is pushed horizontally so that the limit block 9 The limit of the fixing block 10 is released, so that the staff can remove and replace the split top cover 2, and then repeatedly engage and fix the new split top cover 2 to the piston body 1, and then put the piston body 1 back to continue working. At the same time, when the piston body 1 reciprocates, the piston body 1 drives the piston pin 6 to rotate, and the ring 7 moves with the piston pin 6. When the ring 7 drives the connecting rod 5 to move, the connecting rod 5 rotates on the ring 7, so that the friction between the connecting rod 5 and the piston pin 6 is reduced, thereby extending the service life of the connecting rod 5 and the piston pin 6.
[0027] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.
[0028] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A high-sealing split piston for a reducer, comprising a piston body (1), characterized in that: A first sealing gasket (3) is fixed on the top of the piston body (1); a limiting groove (8) is provided at the center of the top surface of the piston body (1); a limiting block (9) is fixed inside the limiting groove (8); a split top cover (2) is arranged above the first sealing gasket (3); a second sealing gasket (4) is fixed on the bottom surface of the split top cover (2); and a fixing block (10) is fixed on the bottom surface of the split top cover (2).
2. The high-sealing split piston for a reducer according to claim 1, characterized in that: A piston pin (6) is rotatably connected to the lower part of the piston body (1), a sleeve ring (7) is rotatably sleeved on the middle part of the piston pin (6), and a connecting rod (5) is rotatably sleeved on the sleeve ring (7).
3. The high-sealing split piston for a reducer according to claim 1, characterized in that: The radius of the top surface of the piston body (1) is the same as the radius of the split top cover (2); the first sealing gasket (3) and the second sealing gasket (4) are both annular in shape; the radii of the first sealing gasket (3) and the second sealing gasket (4) are equal to the radii of the piston body (1) and the split top cover (2).
4. The high-sealing split piston for a reducer according to claim 1, characterized in that: The top surface of the limiting block (9) exceeds the top surface of the first sealing gasket (3), and the height of the limiting block (9) is equal to the height of the fixing block (10).
5. The high-sealing split piston for a reducer according to claim 1, characterized in that: The shape of the fixing block (10) is an inverted "T" shape, and a groove matching the shape of the fixing block (10) is provided inside the limiting block (9), and the height of the groove inside the limiting block (9) is greater than the height below the fixing block (10).
6. The high-sealing split piston for a reducer according to claim 2, characterized in that: The outer surface of the collar (7) is flush with the outer surface of the piston pin (6), and the outer surfaces of the connecting rod (5), the piston pin (6) and the collar (7) are all coated with a zirconium oxide coating and HM hydraulic oil.