CN217271511U - Tooth type coupling - Google Patents
Tooth type coupling Download PDFInfo
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- CN217271511U CN217271511U CN202220649875.4U CN202220649875U CN217271511U CN 217271511 U CN217271511 U CN 217271511U CN 202220649875 U CN202220649875 U CN 202220649875U CN 217271511 U CN217271511 U CN 217271511U
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- bush
- gear shaft
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Abstract
The utility model discloses a tooth-type shaft coupling, through the slip plane left end between bush and outer gear shaft be equipped with first seal assembly, the right-hand member is equipped with second seal assembly, with motor shaft hydraulic pressure installation in-process, seal assembly can prevent effectively that hydraulic oil from oozing into the slip plane between bush and the outer gear shaft from the gap at bush and outer gear shaft both ends, avoids the slip plane to receive the pollution to ensure that tooth-type shaft coupling has efficient overload protection function in the use; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
Description
Technical Field
The utility model relates to a tooth-type shaft coupling.
Background
The drum-shaped tooth coupling (coupling) is one of the key parts of the transmission, steering and driving systems of subways, light rail trains, high-speed motor train units and the like. As shown in fig. 1 to 3, a tooth coupling in the prior art includes an inner gear sleeve 1 and an outer gear shaft 2 disposed inside the inner gear sleeve 1, the outer gear shaft 2 is engaged with the inner gear sleeve 1, a bushing 3 is disposed inside the outer gear shaft 2 in an interference fit manner, when in use, a motor shaft 6 is disposed inside the bushing 3 in an interference fit manner, a pressing plate 4 located at the right end of the bushing 3 is fixedly mounted on the right end face of the motor shaft 6 through a bolt, a circumferential stepped groove 2-1 is disposed at a left end edge of an inner side face of the outer gear shaft 2, a circumferential ledge 3-1 is disposed at a left end edge of an outer side face of the bushing 3, and the circumferential ledge 3-1 is correspondingly disposed in the circumferential stepped groove 2-1.
With the running speed of the motor train unit becoming higher and higher, the output power and the torque of the traction motor become larger and larger. When the traction motor is in failure, the short-time output torque of the traction motor is much more than that of the traction motor in normal operation. The entire traction system needs to be protected, otherwise the components in the traction system fail due to this high torque, and the bushing 3 in the dog joint functions as an overload protection. The matching surface between the bush 3 and the external gear shaft 2 is called a slip surface, and whether the slip surface works normally or not directly influences the exertion of the overload protection function.
The gear coupling of above-mentioned structure adopts hydraulic pressure mounting means mostly when installing and using, and the hydraulic oil in the installation can be followed bush and external tooth axle both ends and infiltrated the glide plane between bush and the external tooth axle to cause the pollution of glide plane, consequently, there is the hidden danger of overload protection inefficacy at the during operation in the gear coupling after the pollution. The utility model aims at designing a tooth-type shaft coupling to solve foretell technical problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a gear coupling, the left end of the slip surface between the bushing and the outer gear shaft is provided with a first sealing component, the right end of the slip surface between the bushing and the outer gear shaft is provided with a second sealing component, and in the hydraulic installation process of a motor shaft, the sealing components can effectively prevent hydraulic oil from seeping into the slip surface between the bushing and the outer gear shaft from gaps at two ends of the bushing and the outer gear shaft, so that the slip surface is prevented from being polluted, and the gear coupling is ensured to have an efficient overload protection function in the use process; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
In order to realize the above purpose, the technical scheme of the utility model a tooth-type shaft coupling is designed, including interior tooth cover and the inside outer tooth axle of tooth cover in locating, outer tooth axle meshes with interior tooth cover mutually, the inside interference fit of outer tooth axle install the bush, during the use, the motor shaft is installed to the inside interference fit of bush, is located the clamp plate of bush right-hand member passes through bolt fixed mounting on the right-hand member face of motor shaft, slip face left end between bush and the outer tooth axle is equipped with first seal assembly, right-hand member and is equipped with second seal assembly.
The utility model discloses a tooth-type shaft coupling, through the glide plane left end between bush and outer tooth axle be equipped with first seal assembly, the right-hand member is equipped with second seal assembly, with motor shaft hydraulic pressure installation in-process, seal assembly can prevent effectively that hydraulic oil from oozing into the glide plane between bush and the outer tooth axle from the gap at bush and outer tooth axle both ends, avoids the glide plane to receive the pollution to ensure that tooth-type shaft coupling has efficient overload protection function in the use; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
The preferred technical scheme is that, first seal assembly includes that the hoop is seted up in the first mounting groove of outer pinion medial surface left end or bush lateral surface left end, install first O type circle in the first mounting groove, second seal assembly includes that the hoop is seted up in the second mounting groove of outer pinion medial surface right-hand member or bush lateral surface right-hand member, install second O type circle in the second mounting groove. This structural design's seal assembly, structural design is ingenious reasonable, has both ensured to have good closure effect to sliding surface both ends between bush and the external tooth axle, does not cause the interference to the overload protection function of tooth-type coupling simultaneously.
According to a further preferable technical scheme, a circumferential step groove is formed in the left end edge of the inner side face of the outer gear shaft, a circumferential convex brim is arranged in the left end edge of the outer side face of the bushing, and the circumferential convex brim is correspondingly located in the circumferential step groove; the first sealing assembly is located on the inner side surface of the outer gear shaft on the right side of the annular step groove or the outer side surface of the bushing on the right side of the annular convex eave, or the first sealing assembly is located on the inner side surface of the annular step groove or the outer side surface of the annular convex eave. The left end of the bushing and the left end of the outer gear shaft are matched with the annular step groove through the annular convex eaves, the adaptability is high, and the stability of the bushing and the outer gear shaft after assembly is improved; first seal assembly position sets up the flexibility height, is convenient for adjust according to the processing technology is nimble, has ensured the utility model discloses the production and processing high efficiency of tooth-type shaft coupling.
Further preferred technical scheme still, form confined lubricated chamber through the bellows between interior tooth cover and the external gear axle, lubricated intracavity packing has the lubricating medium, the left end border position of interior tooth cover is equipped with to the radial tooth cover end cover that extends of inside, and the left end pressure of bellows is fixed in on the medial border of tooth cover end cover, and the bellows right-hand member compresses tightly through the clamping ring and is fixed in the external gear axle right-hand member, the clamping ring pass through the bolt fastening in external gear axle right-hand member, tooth cover end border and bellows correspond and be equipped with third O type circle between the turn-ups of tip, be equipped with fourth O type circle between the turn-ups of tip is corresponded to external gear axle and bellows. A sealed lubricating cavity is formed between the inner gear sleeve and the outer gear shaft through the corrugated pipe sealing structure, and the sealing performance of the corrugated pipe sealing structure is better, so that the leakage of a lubricating medium in the gear coupling is effectively prevented, and the working stability and the service life of the gear coupling are greatly improved.
The utility model has the advantages and the beneficial effects that:
1. the utility model discloses a tooth-type shaft coupling, through the glide plane left end between bush and outer tooth axle be equipped with first seal assembly, the right-hand member is equipped with second seal assembly, with motor shaft hydraulic pressure installation in-process, seal assembly can prevent effectively that hydraulic oil from oozing into the glide plane between bush and the outer tooth axle from the gap at bush and outer tooth axle both ends, avoids the glide plane to receive the pollution to ensure that tooth-type shaft coupling has efficient overload protection function in the use; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
2. The utility model discloses a tooth-type shaft coupling, first seal assembly includes that the hoop sets up the first mounting groove in outer pinion shaft medial surface left end or bush lateral surface left end, install first O type circle in the first mounting groove, second seal assembly includes that the hoop sets up the second mounting groove in outer pinion shaft medial surface right-hand member or bush lateral surface right-hand member, install second O type circle in the second mounting groove. This structural design's seal assembly, structural design is ingenious reasonable, has both ensured to have good closure effect to sliding surface both ends between bush and the external tooth axle, does not cause the interference to the overload protection function of tooth-type coupling simultaneously.
3. The utility model discloses a tooth-type coupling, bush left end and outer pinion left end pass through the annular eaves and cooperate each other with annular step groove, and the suitability is high, has improved the stability of the two after assembling; first seal assembly position sets up the flexibility height, is convenient for adjust according to the processing technology is nimble, has ensured the utility model discloses the production and processing high efficiency of tooth-type shaft coupling.
4. The utility model discloses a tooth-type shaft coupling forms confined lubricated chamber by bellows seal structure between tooth cover and the external gear axle in it, because bellows seal structure's leakproofness is better, has effectively prevented the interior lubricating medium seepage of tooth-type shaft coupling, has improved tooth-type shaft coupling's job stabilization nature and life greatly.
Drawings
FIG. 1 is a schematic representation of a prior art dog clutch construction;
FIG. 2 is an enlarged view of a portion of FIG. 1 at D;
FIG. 3 is an enlarged view of a portion of FIG. 1 at E;
FIG. 4 is a schematic structural view of a tooth coupling in embodiment 1;
FIG. 5 is an enlarged view of a portion of FIG. 4 at F;
FIG. 6 is an enlarged view of a portion of FIG. 4 at H;
FIG. 7 is a schematic structural view of a tooth coupling in accordance with embodiment 5;
FIG. 8 is an enlarged view of a portion of FIG. 7 at R;
fig. 9 is a partial enlarged view at S in fig. 7.
In the figure: 1. an inner gear sleeve; 2. an outer gear shaft; 3. a bushing; 4. pressing a plate; 5. a lubricating medium; 6. a motor shaft; 7. a first O-ring; 8. a second O-ring; 9. a third O-ring; 10. a fourth O-ring; 11. pressing a ring; 1-1, gear sleeve end cover; 2-1, circumferential step grooves; 3-1, and an annular convex brim.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 4 to 6, a tooth coupling comprises an inner gear sleeve 1 and an outer gear shaft 2 arranged inside the inner gear sleeve 1, wherein the outer gear shaft 2 is meshed with the inner gear sleeve 1, a bushing 3 is arranged inside the outer gear shaft 2 in an interference fit manner, when the tooth coupling is used, a motor shaft 6 is arranged inside the bushing 3 in an interference fit manner, a pressing plate 4 located at the right end of the bushing 3 is fixedly arranged on the right end face of the motor shaft 6 through a bolt, a first sealing assembly is arranged at the left end of a slip surface between the bushing 3 and the outer gear shaft 2, and a second sealing assembly is arranged at the right end of the slip surface.
Preferably, first seal assembly includes that the hoop sets up the first mounting groove in 3 lateral surfaces left ends of bush, install first O type circle 7 in the first mounting groove, second seal assembly includes that the hoop sets up the second mounting groove in 2 medial surfaces right-hand members of outer pinion, install second O type circle 8 in the second mounting groove.
Further preferably, a circumferential stepped groove 2-1 is formed in the left end edge of the inner side face of the outer gear shaft 2, a circumferential protruding eave 3-1 is formed in the left end edge of the outer side face of the bushing 3, and the circumferential protruding eave 3-1 is correspondingly located in the circumferential stepped groove 2-1; the first sealing assembly is positioned on the outer side surface of the annular convex eaves 3-1.
Further preferably, a closed lubricating cavity is formed between the inner gear sleeve 1 and the outer gear shaft 2 through a corrugated pipe 5, a lubricating medium is filled in the lubricating cavity, a gear sleeve end cover 1-1 extending radially inwards is arranged at the left end edge of the inner gear sleeve 1, the left end of the corrugated pipe 5 is fixedly pressed on the inner side edge of the gear sleeve end cover 1-1, the right end of the corrugated pipe 5 is fixedly pressed on the right end of the outer gear shaft 2 through a pressing ring 11, the pressing ring 11 is fixedly arranged at the right end of the outer gear shaft 2 through a bolt, a third O-shaped ring 9 is arranged between the end edge of the gear sleeve end cover 1-1 and a flange at the corresponding end of the corrugated pipe, and a fourth O-shaped ring 10 is arranged between the outer gear shaft 2 and the flange at the corresponding end of the corrugated pipe.
Example 2
A tooth coupling differing from the tooth shaft coupling of embodiment 1 in that the second seal member includes a second fitting groove circumferentially opened in the right end of the outer side surface of the bush 3, and a second O-ring 8 is fitted in the second fitting groove.
Example 3
A tooth shaft coupling differing from the tooth shaft coupling of embodiment 1 in that said first seal member is provided on the inner side surface of the circumferential step groove 2-1.
Example 4
A tooth coupling differing from the tooth shaft coupling of embodiment 1 in that a first seal member is provided on an inner side surface of a circumferential step groove 2-1, and a second seal member includes a second fitting groove circumferentially opened on a right end of an outer side surface of a bush 3, and a second O-ring 8 is fitted in the second fitting groove.
Example 5
As shown in fig. 7 to 9, a tooth coupling comprises an inner gear sleeve 1 and an outer gear shaft 2 arranged inside the inner gear sleeve 1, wherein the outer gear shaft 2 is meshed with the inner gear sleeve 1, a bushing 3 is arranged inside the outer gear shaft 2 in an interference fit manner, when the tooth coupling is used, a motor shaft 6 is arranged inside the bushing 3 in an interference fit manner, a pressing plate 4 located at the right end of the bushing 3 is fixedly arranged on the right end face of the motor shaft 6 through a bolt, a first sealing assembly is arranged at the left end of a slip surface between the bushing 3 and the outer gear shaft 2, and a second sealing assembly is arranged at the right end of the slip surface.
Preferably, first seal assembly includes that the hoop is seted up in the first mounting groove of 2 medial surfaces left ends of outer pinion, install first O type circle 7 in the first mounting groove, second seal assembly includes that the hoop is seted up in the second mounting groove of 2 medial surfaces right-hand members of outer pinion, install second O type circle 8 in the second mounting groove.
Further preferably, the left end edge of the inner side surface of the outer gear shaft 2 is provided with a circumferential stepped groove 2-1, the left end edge of the outer side surface of the bushing 3 is provided with a circumferential convex brim 3-1, and the circumferential convex brim 3-1 is correspondingly positioned in the circumferential stepped groove 2-1; the first sealing assembly is positioned on the inner side surface of the outer gear shaft 2 on the right side of the annular step groove 2-1.
Further preferably, a closed lubrication cavity is formed between the inner gear sleeve 1 and the outer gear shaft 2 through a corrugated pipe 5, a lubrication medium is filled in the lubrication cavity, a gear sleeve end cover 1-1 extending radially inwards is arranged at the left end edge of the inner gear sleeve 1, the left end of the corrugated pipe 5 is fixedly pressed on the inner edge of the gear sleeve end cover 1-1, the right end of the corrugated pipe 5 is fixedly pressed on the right end of the outer gear shaft 2 through a pressing ring 11, the pressing ring 11 is fixed at the right end of the outer gear shaft 2 through a bolt, a third O-ring 9 is arranged between the end edge of the gear sleeve end cover 1-1 and a flange at the corresponding end of the corrugated pipe, and a fourth O-ring 10 is arranged between the outer gear shaft 2 and the flange at the corresponding end of the corrugated pipe.
Example 6
A tooth coupling differing from the tooth shaft coupling of embodiment 5 in that a first seal member includes a first fitting groove circumferentially opened to the left end of the outer side surface of a bush 3, a first O-ring 7 is fitted in the first fitting groove, a second seal member includes a second fitting groove circumferentially opened to the right end of the outer side surface of the bush 3, and a second O-ring 8 is fitted in the second fitting groove.
Preferably, the left end edge of the inner side surface of the outer gear shaft 2 is provided with an annular step groove 2-1, the left end edge of the outer side surface of the bushing 3 is provided with an annular convex brim 3-1, and the annular convex brim 3-1 is correspondingly positioned in the annular step groove 2-1; the first sealing assembly is positioned on the outer side surface of the lining 3 on the right side of the annular convex eaves 3-1.
Example 7
A tooth shaft coupling differing from the tooth shaft coupling of embodiment 5 in that the second seal member includes a second fitting groove circumferentially opened at the right end of the outer side surface of the bush 3, and a second O-ring 8 is fitted in the second fitting groove.
Example 8
A tooth coupling differing from the tooth shaft coupling of embodiment 5 in that the first seal assembly is located on the outside of the bush 3 to the right of the circumferential lip 3-1.
In embodiments 1 to 8, the tooth-type coupling is provided with a first sealing assembly at the left end of the slip surface between the bushing 3 and the external gear shaft 2 and a second sealing assembly at the right end, and in the hydraulic installation process with the motor shaft 6, the sealing assemblies can effectively prevent hydraulic oil from permeating the slip surface between the bushing 3 and the external gear shaft 2 from gaps at both ends of the bushing 3 and the external gear shaft 2, so as to prevent the slip surface from being polluted, thereby ensuring that the tooth-type coupling has an efficient overload protection function in the use process.
The utility model discloses in the shaft coupling of other structures can also be applicable to the cooperation mode between interior tooth sleeve, external tooth axle, bush and seal assembly in the tooth-type shaft coupling.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a tooth-type shaft coupling, includes interior tooth cover (1) and locates inside outer tooth axle (2) of interior tooth cover (1), outer tooth axle (2) mesh mutually with interior tooth cover (1), the inside interference fit of outer tooth axle (2) install bush (3), during the use, motor shaft (6) are installed to the inside interference fit of bush (3), are located clamp plate (4) of bush (3) right-hand member pass through bolt fixed mounting on the right-hand member face of motor shaft (6), its characterized in that, slip face left end between bush (3) and outer tooth axle (2) is equipped with first seal assembly, and the right-hand member is equipped with second seal assembly.
2. The toothed coupling according to claim 1, characterized in that said first sealing means comprise a first mounting groove circumferentially open at the left end of the inner side of the outer toothed shaft (2) or at the left end of the outer side of the bushing (3), said first mounting groove being fitted with a first O-ring (7), said second sealing means comprise a second mounting groove circumferentially open at the right end of the inner side of the outer toothed shaft (2) or at the right end of the outer side of the bushing (3), said second mounting groove being fitted with a second O-ring (8).
3. The gear coupling according to claim 2, wherein a circumferential stepped groove (2-1) is formed at a left end position of the inner side surface of the outer gear shaft (2), a circumferential ledge (3-1) is formed at a left end position of the outer side surface of the bushing (3), and the circumferential ledge (3-1) is correspondingly located in the circumferential stepped groove (2-1); the first sealing assembly is located on the inner side face of the outer gear shaft (2) on the right side of the annular step groove (2-1) or the outer side face of the bushing (3) on the right side of the annular convex eave (3-1), or the first sealing assembly is located on the inner side face of the annular step groove (2-1) or the outer side face of the annular convex eave (3-1).
4. A gear coupling according to claim 3, characterized in that a closed lubrication chamber is formed between the inner sleeve (1) and the outer gear shaft (2) by means of a bellows (5), which lubrication chamber is filled with a lubricating medium, the left end edge of the inner gear sleeve (1) is provided with a gear sleeve end cover (1-1) which extends towards the inner radial direction, the left end of the corrugated pipe (5) is fixedly pressed on the inner side edge of the gear sleeve end cover (1-1), the right end of the corrugated pipe (5) is fixedly pressed on the right end of the outer gear shaft (2) through a pressing ring (11), the pressing ring (11) is fixed at the right end of the outer gear shaft (2) through a bolt, a third O-shaped ring (9) is arranged between the end edge of the gear sleeve end cover (1-1) and the flanging at the corresponding end part of the corrugated pipe, and a fourth O-shaped ring (10) is arranged between the outer gear shaft (2) and the flanging at the corresponding end part of the corrugated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220649875.4U CN217271511U (en) | 2022-03-24 | 2022-03-24 | Tooth type coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220649875.4U CN217271511U (en) | 2022-03-24 | 2022-03-24 | Tooth type coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217271511U true CN217271511U (en) | 2022-08-23 |
Family
ID=82870565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220649875.4U Active CN217271511U (en) | 2022-03-24 | 2022-03-24 | Tooth type coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217271511U (en) |
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2022
- 2022-03-24 CN CN202220649875.4U patent/CN217271511U/en active Active
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