CN219062435U - Cycloid motor sealing mechanism - Google Patents
Cycloid motor sealing mechanism Download PDFInfo
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- CN219062435U CN219062435U CN202123363167.9U CN202123363167U CN219062435U CN 219062435 U CN219062435 U CN 219062435U CN 202123363167 U CN202123363167 U CN 202123363167U CN 219062435 U CN219062435 U CN 219062435U
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- ring
- sealing
- spring
- transmission shaft
- seal mechanism
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Abstract
The utility model discloses a cycloid motor sealing mechanism, which comprises a stationary ring, a movable ring and a spring which are sequentially sleeved on a transmission shaft, wherein the stationary ring is arranged in a motor front cover through a first sealing ring to form a first sealing end face; the movable ring is kept in fit with the stationary ring under the action of fluid pressure and a spring to form a second sealing end face. The utility model has good self-lubricating property, can timely compensate the axial abrasion, and can meet the requirements of small friction coefficient and impact resistance of the cycloid hydraulic motor.
Description
Technical Field
The utility model relates to a hydraulic transmission technology, in particular to a cycloid motor sealing mechanism.
Background
The mechanical seal means a device for preventing fluid leakage, which is formed by at least one pair of end surfaces perpendicular to the rotation axis, which are kept in contact and relatively slide under the action of fluid pressure and the elasticity (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "mechanical seals" are commonly referred to simply as "mechanical seals". However, the conventional mechanical seal has a complex structure and is inconvenient to assemble and disassemble. Compared with other seals, the mechanical end face seal has more parts, requires precision and has a complex structure. Particularly in terms of assembly, it is difficult to remove the seal ring from the shaft end and the machine must be partially or completely removed.
Disclosure of Invention
The utility model aims to: the utility model aims to provide a cycloid motor sealing mechanism which is convenient to assemble and disassemble and simple in structure.
The technical scheme is as follows: the utility model comprises a stationary ring, a movable ring and a spring which are sequentially sleeved on a transmission shaft, wherein the stationary ring is arranged in a motor front cover through a first sealing ring to form a first sealing end face; the movable ring is kept in fit with the stationary ring under the action of fluid pressure and a spring to form a second sealing end face.
An inner groove is formed in the bottom surface of the movable ring and used for installing the second sealing ring.
And a compensation pad is further arranged in the inner groove on the movable ring, and the movable ring is contacted with the spring through the compensation pad.
And the transmission shaft is sleeved with an elastic retainer ring for the shaft, and the elastic retainer ring is used for positioning the spring.
The transmission shaft is provided with a groove for installing the elastic retainer ring for the shaft along the circumferential direction, and the elastic retainer ring for the shaft is partially embedded into the groove.
And a gap is reserved between one end of the movable ring, which is close to the stationary ring, and the transmission shaft.
The first sealing ring and the second sealing ring are O-shaped sealing rings.
The beneficial effects are that: compared with the prior art, the utility model has the beneficial effects that: (1) The sealing performance is good, as long as the surface roughness and flatness of the main sealing surface can be guaranteed to meet the requirements, the wear resistance of the material is good, the mechanical seal can achieve little leakage, and the volumetric efficiency of the motor is improved; (2) The mechanical seal is attached by spring force and fluid pressure, so that the friction pair is automatically kept in contact during operation, and the compression is not required to be adjusted like common soft packing after assembly.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
fig. 2 is a schematic structural view of the present utility model.
Detailed Description
The technical scheme of the utility model is described in detail below with reference to the detailed description and the attached drawings.
As shown in fig. 1 and 2, the cycloidal motor sealing mechanism of the present utility model is installed in a gap between a motor housing and a transmission shaft 7 for sealing a fluid inside the motor housing. The utility model comprises a stationary ring 1, a movable ring 2 and a spring 5 which are sleeved on a transmission shaft 7 in sequence. The stationary ring 5 is mounted in the motor front cover by a first sealing ring 8 forming a first sealing end face. The moving ring 2 is kept in fit with the stationary ring 1 under the action of fluid pressure and a spring 5 to form a second sealing end face. An inner groove is formed in the bottom surface of the movable ring 2 and is used for installing a second sealing ring 3; a compensation pad 4 is also arranged in the inner groove on the movable ring 2, and the movable ring 2 is contacted with a spring 5 through the compensation pad 4. In this embodiment, the first seal ring 8 and the second seal ring 3 are O-rings. The movable ring 2 is elastically rotated along with the drive shaft 7 in the axial direction of the drive shaft 7. The transmission shaft 7 is sleeved with an elastic retainer ring 6 for the shaft, which is used for positioning the spring 5; specifically, the transmission shaft 7 is provided with a groove in the circumferential direction for mounting the circlip 6 for the shaft, and the circlip 6 for the shaft is partially embedded in the groove. A gap is reserved between one end of the movable ring 2, which is close to the stationary ring 1, and the transmission shaft 7.
During installation, the elastic retainer ring 6 for the shaft is assembled into the transmission shaft 7, the compensation pad 4 and the movable ring 2 are sequentially installed into the transmission shaft 7 as reference planes of the springs 5, after the movable ring 2 is installed, the movable ring 2 is pressed against the springs 5 and can automatically spring back, the front cover is tightened after the transmission shaft 7 is aligned, bolts are uniformly tightened, the front cover end face deflection is prevented, each point is checked by using a feeler gauge, the error is not more than 0.05 mm, the end face of the static ring 1 in the front cover, which is contacted with the movable ring 2, is a second sealing end face, which is sometimes called a friction pair, is a core of a mechanical seal, the movable ring 2 is kept in fit with the static ring 1, and the mechanism mainly comprising elastic elements (the compensation pad 4 and the springs 5) is compensated in the axial direction of the transmission shaft 7 and relatively slides, so that a device for preventing fluid leakage is formed after the abrasion amount is generated.
Claims (7)
1. A gerotor motor seal mechanism, characterized by: the motor comprises a stationary ring (1), a movable ring (2) and a spring (5) which are sequentially sleeved on a transmission shaft (7), wherein the stationary ring (1) is arranged in a motor front cover through a first sealing ring (8) to form a first sealing end face; the movable ring (2) is kept attached to the stationary ring (1) under the action of fluid pressure and a spring (5) to form a second sealing end face.
2. The gerotor motor seal mechanism of claim 1, wherein: an inner groove is formed in the bottom surface of the movable ring (2) and used for installing the second sealing ring (3).
3. The gerotor motor seal mechanism of claim 2, wherein: a compensation pad (4) is further arranged in the inner groove on the movable ring (2), and the movable ring (2) is contacted with a spring (5) through the compensation pad (4).
4. The gerotor motor seal mechanism of claim 1, wherein: and the transmission shaft (7) is sleeved with an elastic retainer ring (6) for the shaft, and the elastic retainer ring is used for positioning the spring (5).
5. The gerotor motor seal mechanism of claim 4, wherein: the transmission shaft (7) is provided with a groove for installing the elastic retainer ring (6) for the shaft along the circumferential direction, and the elastic retainer ring (6) for the shaft is partially embedded into the groove.
6. The gerotor motor seal mechanism of claim 1, wherein: a gap is reserved between one end of the movable ring (2) close to the stationary ring (1) and the transmission shaft (7).
7. The gerotor motor seal mechanism of claim 2, wherein: the first sealing ring (8) and the second sealing ring (3) are O-shaped sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123363167.9U CN219062435U (en) | 2021-12-29 | 2021-12-29 | Cycloid motor sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123363167.9U CN219062435U (en) | 2021-12-29 | 2021-12-29 | Cycloid motor sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219062435U true CN219062435U (en) | 2023-05-23 |
Family
ID=86366452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123363167.9U Active CN219062435U (en) | 2021-12-29 | 2021-12-29 | Cycloid motor sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219062435U (en) |
-
2021
- 2021-12-29 CN CN202123363167.9U patent/CN219062435U/en active Active
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