CN219866175U - Output shaft sealing device of speed reducer - Google Patents
Output shaft sealing device of speed reducer Download PDFInfo
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- CN219866175U CN219866175U CN202321108970.4U CN202321108970U CN219866175U CN 219866175 U CN219866175 U CN 219866175U CN 202321108970 U CN202321108970 U CN 202321108970U CN 219866175 U CN219866175 U CN 219866175U
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- power
- shaft
- sealing
- transmission shaft
- output shaft
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- 238000007789 sealing Methods 0.000 title claims abstract description 84
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011553 magnetic fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model discloses a sealing device for an output shaft of a speed reducer, which comprises a power output seat, wherein a power sealing shell is fixed on one side of the power output seat through screws, a power output shaft is connected to an inner bearing of the power sealing shell, a transmission shaft is connected to one end of the power output shaft through a spline, a power input shaft is connected to the other end of the transmission shaft through a spline, at least one sealing ring is arranged between the transmission shaft and the power output seat in a limiting manner, an umbrella cover is fixedly connected to the outer side of the middle part of the transmission shaft, a spring is sleeved between the umbrella cover and the power output shaft, the power sealing shell can play a dustproof role, the sealing ring is extruded between the transmission shaft and the power output seat, the sealing ring has a sealing and dampproof role, and after the inner edge of the sealing ring is worn, the transmission shaft slides laterally under the elastic action of the spring, the umbrella cover extrudes the sealing ring to expand outwards to keep a compressed state with a stepped groove, so that the sealing effect of the output shaft of the speed reducer can be ensured.
Description
Technical Field
The utility model relates to the technical field of rotation shaft sealing, in particular to a sealing device for an output shaft of a speed reducer.
Background
The common seals are divided into static seals and dynamic seals according to movement, the dynamic seals comprise reciprocating linear movement and rotary shaft seals, common shaft seals are mechanical seals, packing (also called packing), oil seals, spiral seals, floating carbon ring seals, magnetic fluid seals, dry gas seals, brush seals and the like, wherein the carbon ring seals, the dry gas seals and the brush seals are commonly used for sealing gas, and the mechanical seals, the packing and the oil seals are commonly used for sealing liquid;
the speed reducer output shaft seal belongs to the rotation axis seal class, and traditional speed reducer output shaft seal structure is as shown in fig. 1, including power take off seat 1, power take off seat 1 one side screw fixation has power seal shell 2, power seal shell 2 internal bearing is connected with power take off shaft 3, power take off shaft 3 one end spline coupling has transmission shaft 4, transmission shaft 4 other end spline coupling has power input shaft 5, spacing at least one sealing washer 6 that is provided with between transmission shaft 4 and the power take off seat 1, however, after the sealing washer inner edge wearing and tearing for a long time, only can rely on the elasticity of sealing washer self to supplement, after exceeding certain degree of wear, sealing washer deformability can weaken rapidly, leads to forming the clearance between sealing washer, the power take off shaft for speed reducer's output shaft seal inefficacy has shortened speed reducer life, for this novel speed reducer output shaft seal device is used for solving above-mentioned problem.
Disclosure of Invention
The utility model provides a sealing device for an output shaft of a speed reducer, which solves the technical problems that after the inner edge of a sealing ring of the output shaft of the speed reducer is worn for a long time, the sealing ring can be supplemented only by the self elasticity of the sealing ring, and after the sealing ring exceeds a certain wear degree, the deformation capacity of the sealing ring can be weakened rapidly, so that a gap is formed between the sealing ring and a power output shaft, the sealing of the output shaft of the speed reducer is invalid, and the service life of the speed reducer is shortened.
In order to solve the technical problems, the utility model provides the sealing device for the output shaft of the speed reducer, which comprises a power output seat, wherein a power sealing shell is fixed on one side of the power output seat through screws, a power output shaft is connected to an inner bearing of the power sealing shell, one end of the power output shaft is in spline connection with a transmission shaft, the other end of the transmission shaft is in spline connection with a power input shaft, at least one sealing ring is arranged between the transmission shaft and the power output seat in a limiting manner, an umbrella cover is fixedly connected to the outer side of the middle part of the transmission shaft, a spring is sleeved between the umbrella cover and the power output shaft, and the outer peripheral surface of the umbrella cover is in contact with the inner edge of the sealing ring.
Preferably, the cross section of the umbrella cover is circular, and one end of the umbrella cover gradually widens to the other end.
Preferably, a step groove is formed in the middle of the power output seat, at least one annular groove is formed in the inner peripheral wall of the step groove, and a sealing ring is embedded in the annular groove in an interference mode.
Preferably, the end faces of the power output shaft and the power input shaft are respectively provided with a splicing groove, and the structures of the splicing grooves are matched with the structures at the two ends of the transmission shaft.
Preferably, the transmission shaft is cylindrical structure, two spline grooves are symmetrically formed in two ends of the transmission shaft.
Preferably, the power seal shell is sleeved on the outer side of the power output seat, and a plurality of holes are formed in the edges of the power output seat and the power seal shell at equal intervals.
Compared with the related art, the sealing device for the output shaft of the speed reducer has the following beneficial effects:
according to the sealing device for the output shaft of the speed reducer, the power sealing shell can play a role in dust prevention, the sealing ring is extruded between the transmission shaft and the power output seat, the sealing and moisture-proof effects are achieved, after the inner edge of the sealing ring is worn, the transmission shaft slides laterally under the elastic force of the spring, the umbrella cover extrudes the sealing ring to expand outwards and keep a pressing state with the stepped groove, the sealing effect of the output shaft of the speed reducer can be guaranteed, and compared with a traditional mechanical sealing structure, the service life of the sealing ring is effectively prolonged, and the leakage risk is greatly reduced.
Drawings
FIG. 1 is a side cross-sectional view of a conventional reducer output shaft seal;
FIG. 2 is a side cross-sectional view of a seal for an output shaft of a speed reducer according to the present utility model;
fig. 3 is a structural view of a transmission shaft in a sealing device for an output shaft of a speed reducer.
Reference numerals in the drawings: 1. a power output seat; 11. a stepped groove; 12. a ring groove; 2. a power seal housing; 3. a power output shaft; 4. a transmission shaft; 41. umbrella cover; 42. a spring; 5. a power input shaft; 6. and (3) sealing rings.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: 1-3, the sealing device for the output shaft of the speed reducer comprises a power output seat 1, wherein a power sealing shell 2 is fixed on one side of the power output seat 1 through screws, the power sealing shell 2 is sleeved on the outer side of the power output seat 1, and a plurality of holes are formed in the edges of the power output seat 1 and the power sealing shell 2 at equal intervals;
specifically, a threaded hole is formed in the power output seat 1, a through hole is formed in the power seal shell 2, and a screw is screwed into the threaded hole through the through hole, so that the position of the power seal shell 2 can be fixed;
specifically, the power seal housing 2 plays a role in preliminary dust prevention, and can prevent external dust and air from directly entering the speed reducer.
Further, the inner bearing of the power sealing shell 2 is connected with a power output shaft 3, one end of the power output shaft 3 is connected with a transmission shaft 4 through a spline, the other end of the transmission shaft 4 is connected with a power input shaft 5 through a spline,
the end faces of the power output shaft 3 and the power input shaft 5 are respectively provided with a splicing groove, and the structures of the splicing grooves are matched with the structures of the two ends of the transmission shaft 4;
specifically, the transmission shaft 4 can slide along the inserting groove, and can be in the inserting groove, so that the sealing ring 6 can be conveniently extruded, sealed, disassembled and replaced.
Further, the transmission shaft 4 is in a cylindrical structure, and two spline grooves are symmetrically formed in two ends of the transmission shaft 4;
specifically, spline grooves are provided so that the power output shaft 3, the propeller shaft 4, and the power input shaft 5 can rotate synchronously.
Further, at least one sealing ring 6 is arranged between the transmission shaft 4 and the power output seat 1 in a limiting manner, an umbrella cover 41 is fixedly connected to the outer side of the middle part of the transmission shaft 4, a stepped groove 11 is formed in the middle part of the power output seat 1, at least one annular groove 12 is formed in the inner peripheral wall of the stepped groove 11, and the sealing ring 6 is embedded in the annular groove 12 in an interference manner;
specifically, as shown in fig. 2, the sealing ring 6 presses the umbrella cover 41 and the ring groove 12, so that the sealing function is achieved.
Alternatively, the ring grooves 12 can be positioned on the same circular ring surface, and the radii of the sealing rings 6 in different ring grooves 12 are different, so that the umbrella cover 41 contacts with different sealing rings 6 to play a role in multi-layer sealing;
alternatively, the ring grooves 12 can be located on circular ring surfaces with different diameters, the radii of the sealing rings 6 in the ring grooves 12 are the same, and the umbrella cover 41 can be contacted with different sealing rings 6 to play a role of multi-layer sealing.
Further, a spring 42 is sleeved outside the transmission shaft 4 and between the umbrella cover 41 and the power output shaft 3, the outer peripheral surface of the umbrella cover 41 is in contact with the inner edge of the sealing ring 6, the section of the umbrella cover 41 is circular, and one end of the umbrella cover 41 gradually widens to the other end;
specifically, the umbrella cover 41 is extruded by the spring 42, after the sealing ring 6 is worn, the transmission shaft 4 slides laterally under the action of the elasticity of the spring 42, and the umbrella cover 41 extrudes the sealing ring 6 to expand outwards and keep a pressing state with the step groove 11, so that the sealing effect of the output shaft of the speed reducer can be ensured.
Working principle: when the device is used, the power input shaft 5 drives the transmission shaft 4 to rotate, the transmission shaft 4 drives the power output shaft 3 to rotate, the power output shaft 3 drives mechanical equipment to operate, relative sliding occurs between the umbrella cover 41 and the sealing ring 6, abrasion occurs at the inner edge of the sealing ring 6, after long-term operation, the sealing ring 6 is thinned, the transmission shaft 4 laterally slides under the elastic force of the spring 42, the umbrella cover 41 extrudes the sealing ring 6 to expand outwards and keep a pressing state with the step groove 11, and the sealing effect of the output shaft of the speed reducer can be ensured.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a speed reducer output shaft sealing device, includes power take off seat (1), power take off seat (1) one side screw fixation has power seal shell (2), power seal shell (2) inner bearing is connected with power take off shaft (3), power take off shaft (3) one end spline connection has transmission shaft (4), transmission shaft (4) other end spline connection has power input shaft (5), spacing at least one sealing washer (6) that are provided with between transmission shaft (4) and power take off seat (1), a serial communication port, the middle part outside fixedly connected with chute boot (41) of transmission shaft (4), the outside of transmission shaft (4) just is located between chute boot (41) and power take off shaft (3) cover is equipped with spring (42), chute boot (41) outer peripheral surface and sealing washer (6) inner edge contact setting.
2. A reducer output shaft sealing arrangement according to claim 1, characterized in that the cross section of the umbrella cover (41) is circular, and the umbrella cover (41) widens from one end to the other.
3. The sealing device for the output shaft of the speed reducer according to claim 1, wherein a stepped groove (11) is formed in the middle of the power output seat (1), at least one annular groove (12) is formed in the inner peripheral wall of the stepped groove (11), and a sealing ring (6) is embedded in the annular groove (12) in an interference mode.
4. The sealing device for the output shaft of the speed reducer according to claim 1, wherein the end faces of the power output shaft (3) and the power input shaft (5) are respectively provided with a splicing groove, and the splicing grooves are matched with the structures at the two ends of the transmission shaft (4).
5. The sealing device for the output shaft of the speed reducer according to claim 1, wherein the transmission shaft (4) has a cylindrical structure, and two spline grooves are symmetrically formed at two ends of the transmission shaft (4).
6. The sealing device for the output shaft of the speed reducer according to claim 1, wherein the power sealing shell (2) is sleeved on the outer side of the power output seat (1), and a plurality of holes are formed in the edges of the power output seat (1) and the power sealing shell (2) at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321108970.4U CN219866175U (en) | 2023-05-09 | 2023-05-09 | Output shaft sealing device of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321108970.4U CN219866175U (en) | 2023-05-09 | 2023-05-09 | Output shaft sealing device of speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866175U true CN219866175U (en) | 2023-10-20 |
Family
ID=88317093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321108970.4U Active CN219866175U (en) | 2023-05-09 | 2023-05-09 | Output shaft sealing device of speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866175U (en) |
-
2023
- 2023-05-09 CN CN202321108970.4U patent/CN219866175U/en active Active
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