CN219704960U - Quick installation frock of synchronous pulley that belt NVH test machine was used - Google Patents
Quick installation frock of synchronous pulley that belt NVH test machine was used Download PDFInfo
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- CN219704960U CN219704960U CN202321112202.6U CN202321112202U CN219704960U CN 219704960 U CN219704960 U CN 219704960U CN 202321112202 U CN202321112202 U CN 202321112202U CN 219704960 U CN219704960 U CN 219704960U
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- shaft
- end shaft
- belt
- sleeve
- belt pulley
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 title claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
Abstract
The utility model relates to the technical field of steering systems, in particular to a quick synchronous pulley mounting tool for a belt NVH (noise and harshness) testing machine. The utility model provides a quick installation frock of synchronous pulley that belt NVH test machine used, includes little band pulley, hold-in range, little band pulley end shaft, big band pulley end shaft, its characterized in that: the small belt pulley end shaft is sleeved with a small belt pulley clamping sleeve, the small belt pulley clamping sleeve is connected with a small belt pulley in a shaft mode, the small belt pulley is connected with a large belt pulley through a synchronous belt, the large belt pulley is connected with the large belt pulley clamping sleeve in a shaft mode, and the large belt pulley clamping sleeve is sleeved on the large belt pulley end shaft. Compared with the prior art, the quick installation tool for the synchronous pulley for the belt NVH testing machine can solve the problem of quick assembly and disassembly of the synchronous pulley during belt NVH characteristic analysis in a parallel shaft type electric power steering system.
Description
Technical Field
The utility model relates to the technical field of steering systems, in particular to a quick synchronous pulley mounting tool for a belt NVH (noise and harshness) testing machine.
Background
When a NVH characteristic test machine tool of a belt in the EPSapa of the parallel shaft type electric power steering system is tested, a synchronous belt pulley needs to be quickly installed; the existing quick installation mode generally selects a hydraulic expansion sleeve; however, the hydraulic expansion sleeve is a standard product, and the minimum specification can not meet the NVH test requirement of the steering engine belt.
Disclosure of Invention
The utility model provides a quick installation tool for a synchronous pulley for a belt NVH (noise, vibration and harshness) tester, which can solve the problem of quick assembly and disassembly of the synchronous pulley during belt NVH characteristic analysis in a parallel shaft type electric power steering system.
In order to achieve the above purpose, the quick synchronous pulley mounting fixture for the belt NVH testing machine comprises a small pulley, a synchronous belt, a small pulley end shaft, a large pulley and a large pulley end shaft, and is characterized in that: the small belt pulley end shaft is sleeved with a small belt pulley clamping sleeve, the small belt pulley clamping sleeve is connected with a small belt pulley in a shaft mode, the small belt pulley is connected with a large belt pulley through a synchronous belt, the large belt pulley is connected with the large belt pulley clamping sleeve in a shaft mode, and the large belt pulley clamping sleeve is sleeved on the large belt pulley end shaft.
The small belt pulley end shaft comprises an end shaft and a square shaft, the square shaft is of a rectangular structure, a round hole is formed in the end part of the square shaft, and a pin hole is formed in the side face of the square shaft; the square shaft is connected with the end shaft through a round hole.
The end shaft is formed by sequentially connecting a cylindrical section, a conical section and a threaded section, and an end shaft threaded hole is formed in the upper side face of the cylindrical section of the end shaft in a penetrating mode.
The small belt pulley clamping sleeve comprises a nut and an outer sleeve component, wherein one side of the nut is connected with the outer sleeve component, and the outer sleeve component is of a cylindrical structure with gaps and formed by 3 outer sleeves.
The outer sleeve is of a circular arc-shaped sheet structure, an outer sleeve groove is formed in the outer side end face of the outer sleeve, and an arc-shaped structure matched with the conical surface section of the end shaft is arranged on the inner side face of the outer sleeve.
The nut is formed by connecting an outer hexagon and a cylindrical barrel, the inner side surface of the outer hexagon is provided with an inner thread matched with the thread section of the end shaft, and the inner side surface of the cylindrical barrel is provided with a nut groove and a boss matched with the outer side end surface of the outer sleeve.
The cylindrical section of the end shaft is connected with the round hole at the end part of the square shaft in a matched manner; the conical surface section of the end shaft is connected with the outer sleeve in a matching way; the threaded section of the end shaft is connected with the nut in a matching way.
The structure of the large belt pulley clamping sleeve is consistent with that of the small belt pulley clamping sleeve, the inner side of the large belt pulley clamping sleeve is connected with the inner sleeve through a conical surface, the inner side of the inner sleeve is connected with the end shaft of the large belt pulley by adopting a key shaft, and the inner sleeve is fastened on the end shaft by adopting a plurality of inner hexagonal set screws uniformly distributed along the circumference of the inner sleeve.
The inner sleeve is of a cylinder structure formed by connecting a cylinder and a cone, key grooves are formed in the inner side of the cone, and 4 threaded holes are uniformly distributed in the middle of the cone along the circumferential direction.
Compared with the prior art, the utility model provides the quick installation tool for the synchronous pulley for the belt NVH testing machine, which can solve the problem of quick disassembly and assembly of the synchronous pulley during the belt NVH characteristic analysis in the parallel shaft type electric power steering system.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
FIG. 2 is a schematic diagram of the connection of the square shaft and the end shaft in the present utility model.
FIG. 3 is a schematic view of a square shaft structure according to the present utility model.
Fig. 4 is a schematic diagram of the structure of the end shaft in the present utility model.
Fig. 5 is a schematic structural view of a small pulley clamping sleeve in the utility model.
Fig. 6 is a schematic view of a nut structure according to the present utility model.
Fig. 7 is a cross-sectional view of a nut structure according to the present utility model.
Fig. 8 is a schematic view of the jacket structure in the present utility model.
Fig. 9 is a front view of the jacket structure of the present utility model.
Fig. 10 is a top view of the jacket structure of the present utility model.
Fig. 11 is a side view of the jacket structure of the present utility model.
Fig. 12 is a schematic structural view of a large pulley clamping sleeve in the utility model.
Fig. 13 is a cross-sectional view of a large pulley grip sleeve structure in accordance with the present utility model.
Fig. 14 is a schematic view of the inner sleeve structure in the present utility model.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 14, a small belt pulley clamping sleeve 1 is sleeved on a small belt pulley end shaft 3, a small belt pulley 2 is connected onto the small belt pulley clamping sleeve 1 in a shaft connection mode, the small belt pulley 2 is connected with a large belt pulley 5 through a synchronous belt 7, the large belt pulley 5 is connected onto a large belt pulley clamping sleeve 4 in a shaft connection mode, and the large belt pulley clamping sleeve 4 is sleeved on a large belt pulley end shaft 6.
The small belt pulley end shaft 3 comprises an end shaft and a square shaft, the square shaft 3-1 is of a rectangular structure, a round hole 3-2 is formed in the end part of the square shaft 3-1, and a pin hole 3-3 is formed in the side surface of the square shaft 3-1; the square shaft 3-1 is connected with the end shaft 3-4 through the round hole 3-2.
The end shaft 3-4 is formed by sequentially connecting a cylindrical section 3-4-1, a conical section 3-4-2 and a threaded section 3-4-3, and an end shaft threaded hole 3-4-4 is formed in the upper side surface of the cylindrical section 3-4-1 of the end shaft 3-4 in a penetrating manner.
The small belt pulley clamping sleeve 1 comprises a nut and a sleeve assembly, wherein one side of the nut 1-1 is connected with the sleeve assembly, and the sleeve assembly is of a cylindrical structure with gaps and formed by 3 sleeves 1-2.
The outer sleeve 1-2 is of a circular arc-shaped sheet structure, an outer sleeve groove 1-2-1 is arranged on the outer side end face of the outer sleeve 1-2, and an arc-shaped structure matched with the conical surface section 3-4-2 of the end shaft 3-4 is arranged on the inner side face of the outer sleeve 1-2.
The nut 1-1 is formed by connecting an outer hexagonal 1-1-1 and a cylindrical barrel 1-1-2, wherein the inner side surface of the outer hexagonal 1-1 is provided with an inner thread 1-1-3 matched with a thread section 3-4-3 of an end shaft 3-4, and the inner side surface of the cylindrical barrel 1-1-2 is provided with a nut groove 1-1-4 and a boss 1-1-5 matched with the outer side end surface of an outer sleeve 1-2.
The cylindrical section 3-4-1 of the end shaft 3-4 is connected with the round hole 3-2 at the end part of the square shaft 3-1 in a matched manner; the conical surface section 3-4-2 of the end shaft 3-4 is connected with the outer sleeve 1-2 in a matched manner; the threaded section 3-4-3 of the end shaft 3-4 is connected with the nut 1-1 in a matching way.
The structure of the large belt pulley clamping sleeve 4 is consistent with that of the small belt pulley clamping sleeve 1, the inner side of the large belt pulley clamping sleeve 4 is connected with the inner sleeve 8 through a conical surface, the inner side of the inner sleeve 8 is connected with the large belt pulley end shaft 6 by adopting a key shaft, and 4 inner hexagonal set screws 4-1 uniformly distributed along the circumference of the inner sleeve fasten the inner sleeve 8 on the end shaft 6.
The inner sleeve 8 is of a cylinder structure connected by a cylinder and a cone, the inner side of the cone is provided with a key slot 8-1, and 4 threaded holes 8-2 are uniformly distributed in the middle of the cone along the circumferential direction.
As shown in fig. 1, a small belt pulley 2 is clamped by matching with a small belt pulley end shaft 3 through a small belt pulley clamping sleeve 1; the large belt pulley 5 is clamped by the large belt pulley clamping sleeve 4, and the large belt pulley clamping sleeve 4 is fastened on the large belt pulley end shaft 6.
The small belt pulley end shaft 3 is formed by assembling an end shaft 3-4, a square shaft 3-1 and a threaded cylindrical pin; the tail end of the square shaft 3-1 is provided with a round hole 3-2 and a pin hole 3-3; the end shaft 3-4 is provided with a threaded section 3-4-3, a conical section 3-4-2, a cylindrical section 3-4-1 and an end shaft threaded hole 3-4-4; after the cylindrical section 3-4-1 is matched and assembled with the round hole 3-2, the pin hole 3-3 is concentric with the end shaft threaded hole 3-4-4; two symmetrically distributed threaded cylindrical pins penetrate through the pin hole 3-3 and are screwed into the end shaft threaded hole 3-4-4, and the end shaft 3-4 and the square shaft 3-1 are fastened.
The small belt wheel clamping sleeve 1 consists of a nut 1-1, a jacket 1-2 and a gap formed by the nut and the jacket; 3 jackets 1-2 are uniformly distributed along the center of the nut 1-1; wherein the nut 1-1 is provided with an external hexagon 1-1-1, an internal thread 1-1-3, a nut groove 1-1-4 and a boss 1-1-5; the outer sleeve 1-2 is provided with a boss and an outer sleeve groove 1-2-1, a space is formed between one edge of the outer sleeve 1-2 and the center of the outer sleeve 1-2, and a specific angle is formed between two edges of the outer sleeve 1-2; the boss of the outer sleeve 1-2 is sleeved on the nut groove 1-1-4, and the boss 1-1-5 is sleeved on the outer sleeve groove 1-2-1.
The conical surfaces of the 3 outer sleeves 1-2 of the small belt pulley clamping sleeve 1 are sleeved on the conical surface sections 3-4-2 of the end shaft 3-4, the included angle alpha between the two conical surfaces and the horizontal line is equal, the internal threads 1-1-3 on the nut 1-1 are matched with the threaded sections 3-4-3 on the end shaft 3-4, the outer hexagonal 1-1 on the nut 1-1 is screwed down, and the edges of the bosses 1-1-5 push the edges of the outer sleeve grooves 1-2-1 to move along the conical surfaces; the small belt pulley 2 is sleeved on the three outer sleeves 1-2 of the small belt pulley clamping sleeve 1, and as the outer sleeves 1-2 move, the outer sleeves 1-2 can extrude the end shaft 3-4 and the small belt pulley 2, the deeper the screw-in is, the larger the extrusion force is, the torque formed by friction force formed by the extrusion force along the rotation center is used for overcoming the torque value during rotation, so that the small belt pulley 2 is fastened; during disassembly, the fork plate unscrews the outer hexagon 1-1-1, the edge of the other side of the boss 1-1-5 pulls the opposite side edge of the sleeve groove 1-2-1 to move reversely along the conical surface, and the extrusion force of the sleeve 1-2 on the end shaft 3-4 and the small belt pulley 2 is smaller and smaller until the small belt pulley 2 is separated.
The principle of the large belt pulley clamping sleeve 4 is consistent with that of the small belt pulley clamping sleeve 1, the arrangement mode of the end shaft of the large belt pulley clamping sleeve 4 is different from that of the small belt pulley clamping sleeve 1, and the large belt pulley clamping sleeve is specifically provided with two sections of inner sleeves 8 and a large belt pulley end shaft 6, wherein threaded holes are formed in the middle of the inner sleeves 8, key grooves 8-1 are formed in the inner sleeves, the key grooves 8-1 are connected with key grooves on the large belt pulley end shaft 6 through common flat keys, and the circumferential positioning of the inner sleeves 8 on the large belt pulley end shaft 6 is completed; the inner hexagonal tip end set screw 4-1 locks the inner sleeve 8 and the large belt pulley end shaft 6 through the threaded hole, and the axial positioning of the inner hexagonal tip end set screw and the large belt pulley end shaft is completed; by tightening or loosening the nut, quick assembly and disassembly of the large pulley 5 is achieved.
The end shaft 3-4 and the inner sleeve 8 on the small belt pulley clamping sleeve 1 and the large belt pulley clamping sleeve 4 are arranged, so that when the end shaft 3-4 or the inner sleeve 8 is worn, the whole shaft system does not need to be replaced, and the replacement is simple and convenient.
Claims (9)
1. The utility model provides a quick installation frock of synchronous pulley that belt NVH test machine used, includes little band pulley, hold-in range, little band pulley end shaft, big band pulley end shaft, its characterized in that: the small belt wheel end shaft (3) is sleeved with a small belt wheel clamping sleeve (1), the small belt wheel clamping sleeve (1) is connected with a small belt wheel (2) in a shaft mode, the small belt wheel (2) is connected with a large belt wheel (5) through a synchronous belt (7), the large belt wheel (5) is connected onto the large belt wheel clamping sleeve (4) in a shaft mode, and the large belt wheel clamping sleeve (4) is sleeved on the large belt wheel end shaft (6).
2. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 1, wherein: the small belt pulley end shaft (3) comprises an end shaft and a square shaft, the square shaft (3-1) is of a rectangular structure, a round hole (3-2) is formed in the end part of the square shaft (3-1), and a pin hole (3-3) is formed in the side surface of the square shaft (3-1);
the square shaft (3-1) is connected with the end shaft (3-4) through the round hole (3-2) in a shaft way.
3. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 2, wherein: the end shaft (3-4) is formed by sequentially connecting a cylindrical section (3-4-1), a conical section (3-4-2) and a threaded section (3-4-3), and an end shaft threaded hole (3-4-4) is formed in the upper side face of the cylindrical section (3-4-1) of the end shaft (3-4) in a penetrating mode.
4. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 1, wherein: the small belt pulley clamping sleeve (1) comprises a nut and an outer sleeve component, one side of the nut (1-1) is connected with the outer sleeve component, and the outer sleeve component is of a cylindrical structure with gaps and formed by 3 outer sleeves (1-2).
5. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 4, wherein: the outer sleeve (1-2) is of a circular arc-shaped sheet structure, an outer sleeve groove (1-2-1) is formed in the outer side end face of the outer sleeve (1-2), and an arc-shaped structure matched with the conical surface section (3-4-2) of the end shaft (3-4) is arranged on the inner side face of the outer sleeve (1-2).
6. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 4, wherein: the nut (1-1) is formed by connecting an outer hexagon (1-1-1) and a cylindrical barrel (1-1-2), wherein the inner side surface of the outer hexagon (1-1-1) is provided with an inner thread (1-1-3) matched with a thread section (3-4-3) of an end shaft (3-4), and the inner side surface of the cylindrical barrel (1-1-2) is provided with a nut groove (1-1-4) and a boss (1-1-5) matched with the outer side end surface of an outer sleeve (1-2).
7. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 3, wherein: the cylindrical section (3-4-1) of the end shaft (3-4) is connected with the round hole (3-2) at the end part of the square shaft (3-1) in a matched manner; the conical surface section (3-4-2) of the end shaft (3-4) is connected with the outer sleeve (1-2) in a matching way; the threaded section (3-4-3) of the end shaft (3-4) is connected with the nut (1-1) in a matching way.
8. The quick synchronous pulley mounting fixture for a belt NVH testing machine according to claim 1, wherein: the structure of the large belt pulley clamping sleeve (4) is consistent with that of the small belt pulley clamping sleeve (1), the inner side of the large belt pulley clamping sleeve (4) is connected with the inner sleeve (8) through a conical surface, the inner side of the inner sleeve (8) is connected with the end shaft (6) of the large belt pulley by adopting a key in a shaft connection manner, and 4 inner hexagonal set screws (4-1) uniformly distributed along the circumference of the inner sleeve fasten the inner sleeve (8) on the end shaft (3-4).
9. The quick synchronous pulley mounting fixture for a belt NVH testing machine of claim 8, wherein: the inner sleeve (8) is of a cylinder structure connected by a cylinder and a cone, key grooves (8-1) are formed in the inner side of the cone, and 4 threaded holes (8-2) are uniformly distributed in the middle of the cone along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321112202.6U CN219704960U (en) | 2023-05-10 | 2023-05-10 | Quick installation frock of synchronous pulley that belt NVH test machine was used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321112202.6U CN219704960U (en) | 2023-05-10 | 2023-05-10 | Quick installation frock of synchronous pulley that belt NVH test machine was used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219704960U true CN219704960U (en) | 2023-09-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321112202.6U Active CN219704960U (en) | 2023-05-10 | 2023-05-10 | Quick installation frock of synchronous pulley that belt NVH test machine was used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219704960U (en) |
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2023
- 2023-05-10 CN CN202321112202.6U patent/CN219704960U/en active Active
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