CN217271512U - Tooth type coupling for rail transit - Google Patents
Tooth type coupling for rail transit Download PDFInfo
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- CN217271512U CN217271512U CN202220649907.0U CN202220649907U CN217271512U CN 217271512 U CN217271512 U CN 217271512U CN 202220649907 U CN202220649907 U CN 202220649907U CN 217271512 U CN217271512 U CN 217271512U
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- shaft
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Abstract
The utility model discloses a tooth-type coupling for track traffic, when fastening bolt is not hard up, through set up first only commentaries on classics round pin and second only commentaries on classics round pin on the right-hand member face of clamp plate and motor shaft at interval, avoid the clamp plate to take place circumferential motion to eliminate because the clamp plate rocks the striking shearing action that causes fastening bolt; the groove body is arranged on one side surface of the pressing plate facing the motor shaft, so that a certain distance is reserved between the right end surface of the motor shaft and the pressing plate, the right end surface of the motor shaft is effectively prevented from touching the pressing plate, the use safety of the coupling is ensured, and the service life is prolonged; 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 for track traffic.
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, 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 installed inside the outer gear shaft 2 in an interference fit manner, when in use, a motor shaft 6 is installed inside the bushing 3 in an interference fit manner, a pressing plate 4 located at the right end of the bushing 3 is fixedly installed on the right end face of the motor shaft 6 through a fastening bolt 12, a side face of the pressing plate 4 facing the motor shaft 6 and the right end face of the motor shaft 6 are respectively and correspondingly provided with pin holes, a first rotation stopping pin 13 is installed in the pin hole on the pressing plate 4 in an interference fit manner, and the left end of the first rotation stopping pin 13 is inserted into the pin hole on the motor shaft 6 in a clearance fit manner.
In the coupling, the pressing plate 4 is of a plane plate structure, and in the use process of the coupling, the motor shaft 6 inevitably has axial displacement under the vibration condition, so that the right end face of the motor shaft 6 can touch the pressing plate 4, the hidden trouble that the pressing plate 4 is damaged or the pressing plate 4 is loosened is caused along with the prolonging of the service life, and the use safety of the coupling is influenced. In addition, only the first rotation stopping pin 13 is arranged between the pressure plate 4 and the motor shaft 6, the fastening bolt 12 can be gradually loosened along with the long-term use of the coupling, so that the pressure plate 4 can generate a little circumferential movement, and under the vibration action in the use process, the pressure plate 4 can continuously impact and shear the thread section of the fastening bolt 12 due to shaking, and even the fastening bolt 12 is broken. Therefore, the tooth type coupling with the structure has potential safety hazard in working. The utility model aims at designing a tooth-type shaft coupling for track traffic to the aforesaid technical problem is solved in hope.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a tooth-type shaft coupling for rail transit, when fastening bolts are loose, the circumferential motion of the pressing plate is avoided by arranging a first rotation stopping pin and a second rotation stopping pin on the right end surface of the pressing plate and the motor shaft at intervals, thereby eliminating the impact shearing action on the fastening bolts caused by the shaking of the pressing plate; the groove body is arranged on one side surface of the pressing plate facing the motor shaft, so that a certain distance is reserved between the right end surface of the motor shaft and the pressing plate, the right end surface of the motor shaft is effectively prevented from touching the pressing plate, the use safety of the coupling is ensured, and the service life is prolonged; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
In order to achieve the purpose, the technical scheme of the utility model is to design a tooth-type shaft coupling for track traffic, including interior tooth cover and the outer tooth axle of locating interior tooth cover inside, outer tooth axle mesh with interior tooth cover mutually, the inside interference fit of outer tooth axle install the bush, during the use, the inside interference fit of bush install the motor shaft, the clamp plate that is located the bush right-hand member passes through fastening bolt fixed mounting on the right-hand member face of motor shaft, still include first only commentaries on classics round pin and second only commentaries on classics round pin, the interference mounting of first only commentaries on classics round pin one end in the pinhole on the clamp plate left surface or the pinhole on the motor shaft right-hand member face, the clearance fit grafting of the other end of first only commentaries on classics round pin install in the pinhole on classics round pin on the motor shaft right-hand member face or the pinhole on the clamp plate left surface; one end of the second rotation stopping pin is arranged in a pin hole on the left side surface of the pressing plate or a pin hole on the right end surface of the motor shaft in an interference fit manner, and the other end of the second rotation stopping pin is arranged in a pin hole on the right end surface of the motor shaft or a pin hole on the left side surface of the pressing plate in a clearance fit manner in an inserting manner; the left side surface of the pressing plate is provided with a groove body corresponding to the right end surface of the motor shaft, and the radius of the groove body is larger than that of the right end surface of the motor shaft.
The utility model discloses a tooth-type shaft coupling for track traffic, when fastening bolt is not hard up, through set up first only commentaries on classics round pin and second only commentaries on classics round pin on the right-hand member face of clamp plate and motor shaft at the interval, avoid the clamp plate to take place the circumferential motion to eliminate because the clamp plate rocks the striking shearing action that causes fastening bolt; the groove body is arranged on one side face, facing the motor shaft, of the pressing plate, so that a certain distance is reserved between the right end face of the motor shaft and the pressing plate, the right end face of the motor shaft is effectively prevented from touching the pressing plate, the use safety of the coupling is ensured, and the service life of the coupling is prolonged; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
The preferred technical scheme is that the second rotation stopping pin is a diamond pin, and the first rotation stopping pin and the second rotation stopping pin are positioned on the same circumference at intervals. The second rotation stopping pin is designed into a diamond pin, so that the convenience and high efficiency of installing the pressing plate on the right end face of the motor shaft are ensured when the coupling is assembled and used with the motor shaft.
Further preferred technical scheme still, the left end border position of outer tooth axle medial surface be equipped with the hoop step groove, the left end border position of bush lateral surface be equipped with the protruding eaves of hoop, the protruding eaves of hoop corresponds and is located the hoop step inslot. The left end of the bushing and the left end of the outer gear shaft are matched with each other through the annular convex eaves and the annular step grooves, the adaptability is high, and the stability of the bushing and the outer gear shaft after assembly is improved.
Further preferred technical scheme still, the lateral surface of the protruding eaves of hoop on the hoop seted up the mounting groove, install a O type circle in the mounting groove. This structural design's seal assembly, structural design is ingenious reasonable, has both guaranteed to have good sealing effect to the glide plane left end between bush and the external tooth axle, prevents in this shaft coupling and the motor shaft hydraulic pressure installation hydraulic oil from getting into the glide plane from the gap of glide plane left end, does not cause the interference to the overload protection function of tooth-type shaft coupling simultaneously.
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 clamping ring bolt fastening in external gear axle right-hand member, tooth cover end border and bellows correspond and be equipped with second O type circle between the turn-ups of tip, be equipped with third 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 for track traffic, when fastening bolt is not hard up, through set up first only commentaries on classics round pin and second only commentaries on classics round pin on the right-hand member face of clamp plate and motor shaft at interval, avoid the clamp plate to take place circumferential motion to eliminate because the clamp plate rocks the striking shearing action that causes fastening bolt; the groove body is arranged on one side surface of the pressing plate facing the motor shaft, so that a certain distance is reserved between the right end surface of the motor shaft and the pressing plate, the right end surface of the motor shaft is effectively prevented from touching the pressing plate, the use safety of the coupling is ensured, and the service life is prolonged; the structure design is ingenious and reasonable, the preparation implementation feasibility is high, and the practicability is strong.
2. The second rotation stopping pin is a diamond pin, and the first rotation stopping pin and the second rotation stopping pin are positioned on the same circumference at intervals. The second rotation stopping pin is designed into a diamond pin, so that the convenience and high efficiency of installing the pressing plate on the right end face of the motor shaft are ensured when the coupling is assembled and used with the motor shaft.
3. The left end edge position of the inner side surface of the outer gear shaft is provided with an annular step groove, the left end edge position of the outer side surface of the bushing is provided with an annular convex eaves, and the annular convex eaves are correspondingly located in the annular step groove. 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.
4. The outer side surface of the annular convex eaves is annularly provided with an installation groove, and a first O-shaped ring is installed in the installation groove. This structural design's seal assembly, structural design is ingenious reasonable, has both guaranteed to have good sealing effect to the glide plane left end between bush and the external tooth axle, prevents in this shaft coupling and the motor shaft hydraulic pressure installation hydraulic oil from getting into the glide plane from the gap of glide plane left end, does not cause the interference to the overload protection function of tooth-type shaft coupling simultaneously.
5. 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.
Drawings
FIG. 1 is a schematic representation of a prior art tooth coupling;
FIG. 2 is a schematic structural view of a tooth coupling in embodiment 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at F;
FIG. 4 is an enlarged view of a portion of FIG. 2 at H;
fig. 5 is a partial enlarged view at R in fig. 2.
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. pressing a ring; 11. a ring-pressing bolt; 12. fastening a bolt; 13. a first pin body; 14. a second pin body; 1-1, gear sleeve end cover; 2-1, circumferential step grooves; 3-1, an annular convex brim; 4-1, a trough body.
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 for illustrating 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. 2 to 5, a tooth coupling for rail transit 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 positioned at the right end of the bushing 3 is fixedly arranged on the right end face of the motor shaft 6 through a fastening bolt 12, the tooth coupling further comprises a first rotation stopping pin 13 and a second rotation stopping pin 14, one end of the first rotation stopping pin 13 is arranged in a pin hole on the left end face of the pressing plate 4 in an interference fit manner, and the other end of the first rotation stopping pin 13 is inserted and arranged in a pin hole on the right end face of the motor shaft 6 in a clearance fit manner; one end of the second anti-rotation pin 14 is arranged in a pin hole on the left side surface of the pressure plate 4 in an interference fit manner, and the other end of the second anti-rotation pin 14 is arranged in a pin hole on the right end surface of the motor shaft 6 in a plug-in manner in a clearance fit manner; the left side surface of the pressing plate 4 is provided with a groove body 4-1 corresponding to the right end surface of the motor shaft 6, and the radius of the groove body 4-1 is larger than that of the right end surface of the motor shaft 6.
Preferably, the second anti-rotation pin 14 is a diamond pin, and the first anti-rotation pin 13 and the second anti-rotation pin 14 are located on the same circumference at intervals.
The further optimized technical scheme is that a circumferential step groove 2-1 is formed in the left end edge of the inner side face of the outer gear shaft 2, a circumferential convex brim 3-1 is formed in the left end edge of the outer side face of the bushing 3, and the circumferential convex brim 3-1 is correspondingly located in the circumferential step groove 2-1.
According to the further preferable technical scheme, an installation groove is formed in the outer side face of the annular convex eave 3-1 in the annular direction, and a first O-shaped ring 7 is installed in the installation groove.
Further preferred technical scheme still, form confined lubrication chamber through bellows 5 between interior tooth cover 1 and the external gear shaft 2, the lubrication intracavity is filled with lubricating medium, the left end border position of interior tooth cover 1 is equipped with tooth cover end cover 1-1 to radial extension to inside, and bellows 5's left end is compressed tightly and is fixed in on the medial border of tooth cover end cover 1-1, and bellows 5 right-hand member compresses tightly through clamping ring 10 and is fixed in external gear shaft 2 right-hand member, clamping ring 10 be fixed in external gear shaft 2 right-hand member through clamping ring bolt 11, be equipped with second O type circle 8 between the turn-ups of the corresponding tip of tooth cover end cover 1-1 border and bellows 5, be equipped with third O type circle 9 between the turn-ups of the corresponding tip of external gear shaft 2 and bellows 5.
Example 2
A tooth coupling for rail transit, which is different from the tooth coupling for rail transit in embodiment 1 in that one end of a first rotation stopping pin 13 is interference-mounted in a pin hole on the right end face of a motor shaft 6, and the other end of the first rotation stopping pin 13 is clearance-fit and inserted in a pin hole on the left side face of a pressure plate 4; one end of the second anti-rotation pin 14 is arranged in a pin hole on the left side surface of the pressure plate 4 in an interference fit mode, and the other end of the second anti-rotation pin 14 is arranged in a pin hole on the right end surface of the motor shaft 6 in a plug-in mode in a clearance fit mode.
Example 3
A tooth coupling for rail transit, which is different from the tooth coupling for rail transit in embodiment 1 in that one end of a first rotation stopping pin 13 is interference-mounted in a pin hole on the right end face of a motor shaft 6, and the other end of the first rotation stopping pin 13 is clearance-fit and inserted in a pin hole on the left side face of a pressure plate 4; one end of the second anti-rotation pin 14 is arranged in a pin hole on the right end face of the motor shaft 6 in an interference fit mode, and the other end of the second anti-rotation pin 14 is arranged in a pin hole on the left side face of the pressing plate 4 in a plug-in mode in a clearance fit mode.
When the fastening bolt 12 is loosened, the first rotation stopping pin 13 and the second rotation stopping pin 14 are arranged on the right end surface of the pressing plate 4 and the motor shaft 6 at intervals, so that the circumferential motion of the pressing plate 4 is avoided, and the impact shearing action on the fastening bolt 12 caused by the shaking of the pressing plate 4 is eliminated; the groove body 4-1 is formed in the side face, facing the motor shaft 6, of the pressing plate 4, so that a certain distance is reserved between the right end face of the motor shaft 6 and the pressing plate 4, the right end face of the motor shaft 6 is effectively prevented from touching the pressing plate 4, the use safety of the coupling is guaranteed, and the service life of the coupling is prolonged.
The utility model relates to a cooperation mode between the cell body can also be applicable to in the shaft coupling of other structures on first only commentaries on classics round pin, second only commentaries on classics round pin, motor shaft, clamp plate and the clamp plate for among the tooth-type shaft coupling of track traffic.
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 (5)
1. A tooth type coupling for track traffic comprises an inner tooth sleeve (1) and an outer tooth shaft (2) arranged inside the inner tooth sleeve (1), the external gear shaft (2) is meshed with the internal gear sleeve (1), the internal of the external gear shaft (2) is provided with a bush (3) in interference fit, when in use, a motor shaft (6) is arranged in the bushing (3) in an interference fit manner, a pressure plate (4) positioned at the right end of the bushing (3) is fixedly arranged on the right end surface of the motor shaft (6) through a fastening bolt (12), characterized in that the device also comprises a first rotation stopping pin (13) and a second rotation stopping pin (14), one end of the first rotation stopping pin (13) is arranged in a pin hole on the left side surface of the pressure plate (4) or a pin hole on the right end surface of the motor shaft (6) in an interference manner, the other end of the first anti-rotation pin (13) is in clearance fit, inserted and installed in a pin hole in the right end face of the motor shaft (6) or a pin hole in the left side face of the pressing plate (4); one end of the second anti-rotation pin (14) is arranged in a pin hole on the left side surface of the pressure plate (4) or a pin hole on the right end surface of the motor shaft (6) in an interference fit manner, and the other end of the second anti-rotation pin (14) is arranged in a pin hole on the right end surface of the motor shaft (6) or a pin hole on the left side surface of the pressure plate (4) in a plug-in manner in a clearance fit manner; the left side surface of the pressing plate (4) is provided with a groove body (4-1) corresponding to the right end surface of the motor shaft (6), and the radius of the groove body (4-1) is larger than that of the right end surface of the motor shaft (6).
2. A tooth joint for rail transit according to claim 1, characterized in that said second anti-rotation pin (14) is a diamond pin, said first anti-rotation pin (13) and said second anti-rotation pin (14) being spaced on the same circumference.
3. The geared coupling for rail transit according to claim 2, wherein a circumferential stepped groove (2-1) is formed in a left end position of an inner side surface of the outer gear shaft (2), a circumferential protruding eaves (3-1) is formed in a left end position of an outer side surface of the bush (3), and the circumferential protruding eaves (3-1) are correspondingly located in the circumferential stepped groove (2-1).
4. The geared coupling for rail transit according to claim 3, wherein an installation groove is circumferentially provided on an outer side surface of said circumferentially projecting eaves (3-1), and said installation groove is internally provided with a first O-ring (7).
5. The toothed coupling for rail transit according to claim 4, characterized in that a closed lubrication cavity is formed between the inner sleeve (1) and the outer toothed shaft (2) by means of a bellows (5), the lubrication cavity being 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 to 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 (10), the pressing ring (10) is fixed at the right end of the outer gear shaft (2) through a pressing ring bolt (11), a second O-shaped ring (8) is arranged between the end edge of the gear sleeve end cover (1-1) and the flanging of the corresponding end part of the corrugated pipe, and a third O-shaped ring (9) 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 |
|---|---|---|---|
| CN202220649907.0U CN217271512U (en) | 2022-03-24 | 2022-03-24 | Tooth type coupling for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220649907.0U CN217271512U (en) | 2022-03-24 | 2022-03-24 | Tooth type coupling for rail transit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217271512U true CN217271512U (en) | 2022-08-23 |
Family
ID=82870207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220649907.0U Active CN217271512U (en) | 2022-03-24 | 2022-03-24 | Tooth type coupling for rail transit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217271512U (en) |
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2022
- 2022-03-24 CN CN202220649907.0U patent/CN217271512U/en active Active
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