CN216895426U - Belt pulley and fan shaft connecting structure - Google Patents
Belt pulley and fan shaft connecting structure Download PDFInfo
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- CN216895426U CN216895426U CN202220477587.5U CN202220477587U CN216895426U CN 216895426 U CN216895426 U CN 216895426U CN 202220477587 U CN202220477587 U CN 202220477587U CN 216895426 U CN216895426 U CN 216895426U
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- connecting flange
- fan shaft
- belt pulley
- positioning cylinder
- positioning
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Abstract
The utility model discloses a belt pulley and fan shaft connecting structure, belongs to the field of fan shaft connecting structures, and solves the problems of low connecting stability and low reliability of the conventional belt pulley and a fan shaft. The water pump comprises a water pump shaft, a belt pulley and a fan shaft, wherein a first connecting flange is arranged at one end of the water pump shaft, a first positioning cylinder is arranged at one end, away from the water pump shaft, of the first connecting flange, a second connecting flange is arranged at one end, away from the fan shaft, of the second connecting flange, a second positioning cylinder is arranged at one end, away from the fan shaft, of the second connecting flange, a first positioning hole is formed in the inner portion of the second positioning cylinder, a second positioning hole is formed in the belt pulley, the first positioning cylinder is connected in the first positioning hole in an inserted mode, and the second positioning cylinder is connected in the second positioning hole in an inserted mode. The shaft connecting structure of the belt pulley and the fan can ensure the coaxiality and small radial run-out of the fan shaft and improve the reliability of the whole transmission part.
Description
Technical Field
The utility model relates to a fan shaft connecting structure, in particular to a belt pulley and fan shaft connecting structure.
Background
At present, the power source of a fan used for cooling an automobile (or a large tractor) is generally taken from the end of a water pump shaft of an engine or the end of an independent belt wheel, and the connection mode mostly adopts the rotation speed transmission of connecting a belt wheel of the water pump or the independent belt wheel with a fan component or connecting the fan component through the fan shaft and the like. The structure of the mode is low in cost, but sometimes limited by cost, the belt pulley of the water pump is a spinning belt pulley made of low-carbon steel plate, because the hardness is low (the hardness of materials at the joint surface of the fan assembly cannot be further improved in the process), when the fan assembly is connected through the fan shaft (flange), the vibration is large during working because the distance of the fan assembly in a suspension mode is too long, and a bolt group for fastening the belt pulley and the fan shaft (flange) is easy to loosen and break, so that the fastening and the connection are failed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the prior art, and aims to provide a connecting structure of a belt pulley and a fan shaft, which can ensure the coaxiality and smaller radial run-out of the fan shaft and improve the reliability of the whole transmission part.
The technical scheme of the utility model is as follows: a connection structure of a belt pulley and a fan shaft comprises a water pump shaft, the belt pulley and the fan shaft, wherein a first connecting flange is arranged at one end of the water pump shaft, a first positioning cylinder is arranged at one end, far away from the water pump shaft, of the first connecting flange, a second connecting flange is arranged at one end of the fan shaft, a second positioning cylinder is arranged at one end, far away from the fan shaft, of the second connecting flange, a first positioning hole is formed in the second positioning cylinder, a second positioning hole is formed in the belt pulley, the first positioning cylinder is inserted in the first positioning hole, the outer wall of the first positioning cylinder is attached to the inner wall of the first positioning hole, the second positioning cylinder is inserted in the second positioning hole, the outer wall of the second positioning cylinder is attached to the inner wall of the second positioning hole, and the second positioning cylinder is connected with the first connecting flange through a first fastening bolt, and the second connecting flange is connected with the belt pulley through a second fastening bolt.
As a further improvement, the water pump shaft, the first connecting flange, the first positioning cylinder, the fan shaft, the second connecting flange, the second positioning cylinder, the first positioning hole, the belt pulley and the second positioning hole are coaxially arranged.
Further, the water pump shaft, the first connecting flange and the first positioning cylinder are of an integrated structure, and correspondingly, the fan shaft, the second connecting flange, the second positioning cylinder and the first positioning hole are of an integrated structure.
Further, the water pump shaft, the first connecting flange and the first positioning cylinder are made of medium carbon steel and are subjected to quenching and tempering, and correspondingly, the fan shaft, the second connecting flange, the second positioning cylinder and the first positioning hole are made of medium carbon steel and are subjected to quenching and tempering.
Furthermore, the belt pulley is a U-shaped belt pulley, and the belt pulley is made of a low-carbon steel plate material by adopting a spinning process.
Furthermore, a pressing plate is arranged on one side, far away from the second connecting flange, of the belt pulley.
Furthermore, the pressing plate is made of medium carbon steel and is formed by quenching and tempering.
Furthermore, the outer end of the second connecting flange is provided with a threaded hole, the pressing plate and the belt pulley are both provided with a nail passing hole, and the second fastening bolt sequentially penetrates through the nail passing holes of the pressing plate and the belt pulley to be in threaded connection with the threaded hole of the second connecting flange; the first connecting flange is provided with a threaded hole, the inner end of the second connecting flange is provided with a nail passing hole penetrating through the end face of the second positioning cylinder, and the first fastening bolt penetrates through the nail passing hole in the second connecting flange and is in threaded connection with the threaded hole of the first connecting flange.
Advantageous effects
Compared with the prior art, the utility model has the following advantages:
1. according to the shaft connecting structure of the belt pulley and the fan, the water pump shaft and the fan shaft are connected together through the first connecting flange and the second connecting flange, the fan shaft and the belt pulley are connected together through the second connecting flange, the fan shaft, the water pump shaft and the belt pulley are connected together, so that torque can be stably and smoothly transmitted, the belt pulley and the fan shaft can be quickly installed while coaxiality and small radial run-out of the fan shaft can be ensured through the inserting and matching of the first positioning cylinder and the first positioning hole and the inserting and matching of the second positioning cylinder and the second positioning hole, and the reliability of the whole transmission part is improved.
2. According to the shaft connecting structure of the belt pulley and the fan, the belt pulley is connected with the second connecting flange by adopting the threaded hole positioned on the periphery of the second connecting flange and the nail passing hole positioned on the periphery of the belt pulley to be matched and connected with the first fastening bolt, the number of the arranged first fastening bolts can be properly increased, the force transmission contact area of the belt pulley is increased, the axial distance between a force transmission stress point and the center line of the belt is shorter, and the influence of bending moment on the belt pulley is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic perspective view of a water pump shaft according to the present invention;
FIG. 3 is a perspective view of a fan shaft according to the present invention;
FIG. 4 is a perspective view of the pulley of the present invention.
Wherein: the device comprises a water pump shaft 1, a belt pulley 2, a fan shaft 3, a first connecting flange 4, a first positioning cylinder 5, a second connecting flange 6, a second positioning cylinder 7, a first positioning hole 8, a second positioning hole 9, a first fastening bolt 10, a second fastening bolt 11 and a pressing plate 12.
Detailed Description
The utility model will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-4, the utility model relates to a belt pulley and fan shaft connecting structure, comprising a water pump shaft 1, a belt pulley 2 and a fan shaft 3, wherein one end of the water pump shaft 1 is provided with a first connecting flange 4, one end of the first connecting flange 4 far away from the water pump shaft 1 is provided with a first positioning cylinder 5, one end of the fan shaft 3 is provided with a second connecting flange 6, one end of the second connecting flange 6 far away from the fan shaft 3 is provided with a second positioning cylinder 7, the inside of the second positioning cylinder 7 is provided with a first positioning hole 8, the first positioning hole 8 is a blind hole, the belt pulley 2 is provided with a second positioning hole 9, the first positioning cylinder 5 is inserted into the first positioning hole 8, the outer wall of the first positioning cylinder 5 is attached to the inner wall of the first positioning hole 8, the second positioning cylinder 7 is inserted into the second positioning hole 9, and the outer wall of the second positioning cylinder 7 is attached to the inner wall of the second positioning hole 9, the end face of the second positioning cylinder 7 is pressed against the end face of the first connecting flange 4 on the periphery of the first positioning cylinder 5, the second positioning cylinder 7 is connected with the first connecting flange 4 through a first fastening bolt 10, and the second connecting flange 6 is connected with the belt pulley 2 through a second fastening bolt 11.
The utility model relates to a shaft connecting structure of a belt pulley and a fan, which is used for an engine with a spinning belt pulley which is limited by the structure that the distance of the fan component suspended is longer and the belt pulley of a water pump is made of low-carbon steel, the water pump shaft 1 and the fan shaft 3 are connected together by the first connecting flange 4 and the second connecting flange 6, the fan shaft 3 is connected with the belt pulley 2 through the second connecting flange 6, so that the fan shaft 3, the water pump shaft 1 and the belt pulley 2 are connected together, so that the torque can be stably and smoothly transmitted, and through the insertion and matching of the first positioning cylinder 5 and the first positioning hole 8, and through the inserting fit of the second positioning column 7 and the second positioning hole 9, the belt pulley 2 and the fan shaft 3 are quickly installed, the coaxiality and small radial runout of the fan shaft 3 can be ensured, and the reliability of the whole transmission part is improved.
Preferably, the water pump shaft 1, the first connecting flange 4, the first positioning cylinder 5, the fan shaft 3, the second connecting flange 6, the second positioning cylinder 7, the first positioning hole 8, the belt pulley 2 and the second positioning hole 9 are coaxially arranged, so that the coaxiality of the fan shaft 3, the belt pulley 2 and the water pump shaft 1 is ensured, and the stability and the reliability of the whole transmission component are further improved.
Preferably, the water pump shaft 1, the first connecting flange 4 and the first positioning cylinder 5 are of an integrated structure, and correspondingly, the fan shaft 3, the second connecting flange 6, the second positioning cylinder 7 and the first positioning hole 8 are of an integrated structure. And, still be equipped with the transition axle between water pump shaft 1 and the first connecting flange 4, the diameter of transition axle is waited for the diameter of water pump shaft 1, and is less than the diameter of first connecting flange 4, and transition axle and water pump shaft 1 also structure as an organic whole, further improve the moment of torsion of water pump shaft. The joint of the first positioning cylinder 5 and the first connecting flange 4 is also provided with a notch which is inwards concave in the radial direction, and correspondingly, the joint of the second positioning cylinder 7 and the second connecting flange 6 is also provided with a notch which is inwards concave in the radial direction, so that the problem that the coaxiality is influenced by the interference of the joint of the first positioning cylinder 5 and the second positioning cylinder 7 on the end surface of the belt pulley 2 is avoided. Meanwhile, the water pump shaft 1, the first connecting flange 4 and the first positioning cylinder 5 are made of medium carbon steel and are subjected to quenching and tempering, and correspondingly, the fan shaft 3, the second connecting flange 6, the second positioning cylinder 7 and the first positioning hole 8 are made of medium carbon steel and are subjected to quenching and tempering. The water pump shaft assembly and the fan shaft assembly have high hardness and mechanical strength, are just waken up to be contacted after being assembled, the torque of the fastening piece is not reduced, and the working reliability is better.
Preferably, the belt pulley 2 is a U-shaped belt pulley, and the belt pulley 2 is made of a low-carbon steel plate material by adopting a spinning process, so that the cost can be effectively controlled.
Preferably, a pressing plate 12 is arranged on one side, far away from the second connecting flange 6, of the belt pulley 2, and a yielding hole is formed in the middle of the pressing plate 12, so that the second positioning cylinder 7 can conveniently pass through the yielding hole. The pressing plate 12 is made of medium carbon steel and is formed by quenching and tempering. The belt pulley 2 is pressed by the pressing plate 12 with higher hardness and mechanical strength, so that the rigidity is ensured, and the reliability of the whole transmission part is improved.
Preferably, the outer end of the second connecting flange 6 is provided with a threaded hole, both the pressing plate 12 and the belt pulley 2 are provided with a nail passing hole, and the second fastening bolt 11 sequentially penetrates through the nail passing holes of the pressing plate 12 and the belt pulley 2 to be in threaded connection with the threaded hole of the second connecting flange 6; threaded holes are formed in the first connecting flange 4, nail passing holes penetrating through the end face of the second positioning cylinder 7 are formed in the inner end of the second connecting flange 6, the first fastening bolts 10 penetrate through the nail passing holes in the second connecting flange 6 and are in threaded connection with threaded holes in the first connecting flange 4, so that the stress point of the fan shaft 3 connected with the belt pulley 2 is located on the outer side, and the stress point of the fan shaft 3 connected with the water pump shaft 1 is located on the inner side.
According to the shaft connecting structure of the belt pulley and the fan, the belt pulley 2 is connected with the second connecting flange 6 through the threaded hole positioned on the periphery of the second connecting flange 6 and the nail passing hole positioned on the periphery of the belt pulley 2 and matched with the first fastening bolt 10, the number of the arranged first fastening bolts 10 can be increased properly, the force transmission contact area of the belt pulley 2 is increased, the axial distance between a force transmission stress point and a belt center line is shorter, and the influence of bending moment on the belt pulley is reduced.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the utility model, which will not affect the effect of the utility model and the practicability of the patent.
Claims (8)
1. A connection structure of a belt pulley and a fan shaft comprises a water pump shaft (1), a belt pulley (2) and the fan shaft (3), and is characterized in that one end of the water pump shaft (1) is provided with a first connecting flange (4), one end of the first connecting flange (4) far away from the water pump shaft (1) is provided with a first positioning cylinder (5), one end of the fan shaft (3) is provided with a second connecting flange (6), one end of the second connecting flange (6) far away from the fan shaft (3) is provided with a second positioning cylinder (7), the inside of the second positioning cylinder (7) is provided with a first positioning hole (8), the belt pulley (2) is provided with a second positioning hole (9), the first positioning cylinder (5) is inserted into the first positioning hole (8), and the outer wall of the first positioning cylinder (5) is attached to the inner wall of the first positioning hole (8), the second positioning cylinder (7) is inserted into the second positioning hole (9), the outer wall of the second positioning cylinder (7) is attached to the inner wall of the second positioning hole (9), the second positioning cylinder (7) is connected with the first connecting flange (4) through a first fastening bolt (10), and the second connecting flange (6) is connected with the belt pulley (2) through a second fastening bolt (11).
2. The connection structure of the belt pulley and the fan shaft according to claim 1, wherein the water pump shaft (1), the first connecting flange (4), the first positioning cylinder (5), the fan shaft (3), the second connecting flange (6), the second positioning cylinder (7), the first positioning hole (8), the belt pulley (2) and the second positioning hole (9) are coaxially arranged.
3. The connection structure of a belt pulley and a fan shaft according to claim 1, characterized in that the water pump shaft (1), the first connecting flange (4) and the first positioning cylinder (5) are of an integrated structure, and correspondingly, the fan shaft (3), the second connecting flange (6), the second positioning cylinder (7) and the first positioning hole (8) are of an integrated structure.
4. The connection structure of the belt pulley and the fan shaft as claimed in claim 3, wherein the water pump shaft (1), the first connecting flange (4) and the first positioning cylinder (5) are made of medium carbon steel and are subjected to quenching and tempering, and correspondingly, the fan shaft (3), the second connecting flange (6), the second positioning cylinder (7) and the first positioning hole (8) are made of medium carbon steel and are subjected to quenching and tempering.
5. The pulley and fan shaft connecting structure according to claim 1, wherein the pulley (2) is a U-shaped pulley, and the pulley (2) is made of mild steel plate by a spinning process.
6. A pulley and fan shaft connection according to any one of claims 1-5, characterised in that the pulley (2) is provided with a pressure plate (12) on the side remote from the second connection flange (6).
7. The pulley and fan shaft connecting structure according to claim 6, wherein the pressing plate (12) is made of medium carbon steel and is formed by thermal refining.
8. The connecting structure of the pulley and the fan shaft according to claim 6, wherein the outer end of the second connecting flange (6) is provided with a threaded hole, the pressing plate (12) and the pulley (2) are both provided with a screw passing hole, and the second fastening bolt (11) sequentially passes through the screw passing holes of the pressing plate (12) and the pulley (2) to be in threaded connection with the threaded hole of the second connecting flange (6); the first connecting flange (4) is provided with a threaded hole, the inner end of the second connecting flange (6) is provided with a nail passing hole penetrating through the end face of the second positioning cylinder (7), and the first fastening bolt (10) penetrates through the nail passing hole in the second connecting flange (6) to be in threaded connection with the threaded hole of the first connecting flange (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220477587.5U CN216895426U (en) | 2022-03-04 | 2022-03-04 | Belt pulley and fan shaft connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220477587.5U CN216895426U (en) | 2022-03-04 | 2022-03-04 | Belt pulley and fan shaft connecting structure |
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| Publication Number | Publication Date |
|---|---|
| CN216895426U true CN216895426U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220477587.5U Active CN216895426U (en) | 2022-03-04 | 2022-03-04 | Belt pulley and fan shaft connecting structure |
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| Country | Link |
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| CN (1) | CN216895426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607709A (en) * | 2022-03-04 | 2022-06-10 | 广西玉柴机器股份有限公司 | Belt pulley and fan shaft connecting structure |
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2022
- 2022-03-04 CN CN202220477587.5U patent/CN216895426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607709A (en) * | 2022-03-04 | 2022-06-10 | 广西玉柴机器股份有限公司 | Belt pulley and fan shaft connecting structure |
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