CN209748349U - Belt pulley assembly and belt pulley mounting structure - Google Patents
Belt pulley assembly and belt pulley mounting structure Download PDFInfo
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- CN209748349U CN209748349U CN201920269828.5U CN201920269828U CN209748349U CN 209748349 U CN209748349 U CN 209748349U CN 201920269828 U CN201920269828 U CN 201920269828U CN 209748349 U CN209748349 U CN 209748349U
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- belt pulley
- cover plate
- hole
- motor shaft
- pulley
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Abstract
The utility model relates to a belt pulley assembly and belt pulley mounting structure. The belt pulley assembly comprises a belt pulley, and further comprises a cover plate detachably connected with the belt pulley, the cover plate is provided with an impact part for impacting a tool to push the belt pulley to be sleeved on a motor shaft in an interference mode, the cover plate is provided with a pushing part used for pushing the belt pulley to be matched with the pushing part in a pushing mode, the cover plate is further provided with a screw mounting hole used for corresponding to a threaded hole in the motor shaft to penetrate through the cover plate, fastening screws for fastening and assembling the belt pulley and the motor shaft together, the cover plate is further provided with a dismounting bolt mounting hole, and the dismounting bolt mounting hole is used for penetrating through a dismounting. The cover plate pushes the belt pulley through the pushing part, and an operator installs the belt pulley on the motor shaft through the hammering impact part; when the belt pulley is disassembled, the disassembling bolt is rotatably assembled in the disassembling bolt mounting hole to disassemble the belt pulley, so that the belt pulley is protected, and the damage to the belt pulley is reduced.
Description
Technical Field
The utility model relates to a belt pulley assembly and belt pulley mounting structure.
Background
In oil field work, replacing a motor pulley is a common ground parameter adjusting mode. The existing belt pulley is assembled on a motor shaft in an interference fit mode usually, when the belt pulley is disassembled, wedge-shaped iron is placed between the belt pulley and the motor shaft by an operator, the wedge-shaped iron is hit by a hammer, and the belt pulley is expanded by utilizing the tension of the wedge-shaped iron, so that a motor end cover is easily broken, the motor shaft is loose and deforms, and the end surface of the belt pulley is broken by the wedge-shaped iron and is damaged. When the installation belt pulley, all adopt the direct hammering outward flange of belt pulley of sledgehammer usually, can pound out the opening with the belt pulley outward flange, lead to the outer limit groove of belt pulley to use, make the belt pulley scrap even.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a belt pulley component to solve the problem that the belt pulley in the prior art is easy to damage or even scrap when being mounted and dismounted; the utility model also provides a belt pulley mounting structure to solve the belt pulley among the prior art and cause the belt pulley to damage even condemned problem easily when installation and dismantlement.
in order to solve the technical problem, the utility model discloses a belt pulley subassembly's technical scheme does:
The belt pulley assembly comprises a belt pulley and further comprises a cover plate detachably connected with the belt pulley, the cover plate is provided with an impact part for impacting a tool to push the belt pulley to be sleeved on a motor shaft in an interference mode, the cover plate is provided with a pushing part used for pushing the belt pulley to be matched with the pushing part in a pushing mode, the cover plate is further provided with a screw mounting hole used for corresponding to a threaded hole in the motor shaft to penetrate through a fastening screw for fastening and assembling the cover plate, the belt pulley and the motor shaft together, the cover plate is further provided with a dismounting bolt mounting hole, and the dismounting bolt mounting hole is used for penetrating through a dismounting bolt for pushing.
The technical scheme has the beneficial effects that: the cover plate pushes the belt pulley through the pushing part, and an operator installs the belt pulley on the motor shaft through the hammering impact part to avoid directly hammering the belt pulley; when dismantling the belt pulley, dismantle the bolt and adorn soon and realize the dismantlement to the belt pulley in dismantling the bolt mounting hole, avoid operating personnel to utilize wedge iron's tension to expand the belt pulley to lead to motor end cover to burst, motor shaft loose spacious deformation, belt pulley terminal surface to be broken and damage by wedge iron bursting, protect the belt pulley, thereby reduced the damage of belt pulley.
The inner hole of the belt pulley is a stepped hole, and the pushing part of the cover plate pushes the stepped surface of the stepped hole to be matched with the belt pulley in a pushing mode. The cover plate can enter the pulley to push the pulley.
The impact part is an outer wall surface of the cover plate. The area of the outer wall surface is large, and the cover plate is stressed uniformly.
The cover plate is provided with a sleeve, and an inner hole of the sleeve forms the mounting hole of the dismounting bolt. The sleeve can increase the thread length of the dismounting bolt mounting hole.
The cover plate is also provided with a reinforcing rib which extends along the radial direction of the cover plate and is connected with the sleeve. The strengthening rib can be strengthened the junction of sleeve pipe and apron, carries out the structure to the outer wall of apron simultaneously and strengthens.
The technical scheme of the utility model is that:
belt pulley mounting structure, including motor shaft and belt pulley assembly, belt pulley assembly includes the belt pulley, and belt pulley assembly still includes the apron with belt pulley releasable connection, is equipped with on the apron to be used for supplying the instrument to strike with top push pulley interference suit at the epaxial impact portion of motor, is equipped with on the apron to be used for pushing away the complex top with the belt pulley and pushes away the portion, is equipped with the screw hole on the motor shaft, still be equipped with on the apron to be used for corresponding with the epaxial screw hole of motor in order to wear the dress with apron, belt pulley and motor shaft fastening assembly fastening screw's together screw mounting hole, still be equipped with on the apron and dismantle the bolt mounting hole and be used for wearing the dress to.
The technical scheme has the beneficial effects that: the cover plate pushes the belt pulley through the pushing part, and an operator installs the belt pulley on the motor shaft through the hammering impact part to avoid directly hammering the belt pulley; when dismantling the belt pulley, dismantle the bolt and adorn soon and realize the dismantlement to the belt pulley in dismantling the bolt mounting hole, avoid operating personnel to utilize wedge iron's tension to expand the belt pulley to lead to motor end cover to burst, motor shaft loose spacious deformation, belt pulley terminal surface to be broken and damage by wedge iron bursting, protect the belt pulley, thereby reduced the damage of belt pulley.
The inner hole of the belt pulley is a stepped hole, and the pushing part of the cover plate pushes the stepped surface of the stepped hole to be matched with the belt pulley in a pushing mode. The cover plate can enter the pulley to push the pulley.
The impact part is an outer wall surface of the cover plate. The area of the outer wall surface is large, and the cover plate is stressed uniformly.
The cover plate is provided with a sleeve, and an inner hole of the sleeve forms the mounting hole of the dismounting bolt. The sleeve can increase the thread length of the dismounting bolt mounting hole.
The cover plate is also provided with a reinforcing rib which extends along the radial direction of the cover plate and is connected with the sleeve. The strengthening rib can be strengthened the junction of sleeve pipe and apron, carries out the structure to the outer wall of apron simultaneously and strengthens.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of a belt pulley mounting structure according to the present invention;
Fig. 2 is a sectional view of a pulley and a motor shaft of the pulley mounting structure of fig. 1.
The respective symbols in the figure: 1. a belt pulley; 11. a step surface; 12. a first threaded hole; 2. a cover plate; 21. perforating; 22. a screw mounting hole; 23. a sleeve; 24. reinforcing ribs; 3. tightening the screw; 4. fastening screws; 5. a motor shaft; 51. a second threaded hole; 6. disassembling the bolt; 7. an iron rod; 71. avoiding holes; 72. avoiding the groove.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a belt pulley mounting structure's embodiment 1, as shown in fig. 1 and fig. 2, this belt pulley mounting structure includes motor shaft 5 and belt pulley assembly, and belt pulley assembly includes belt pulley 1 and apron 2.
As shown in fig. 2, the inner hole of the belt pulley 1 is a stepped hole, a hole section for interference fit with the motor shaft 5 in the inner hole is a small-diameter section of the stepped hole, an inner wall surface of the small-diameter section is a conical surface with an inner diameter gradually increasing along a direction away from the stepped surface 11, and the motor shaft 5 is a conical body adapted to the inner wall surface of the small-diameter section to increase a contact area between the belt pulley 1 and the motor shaft 5. Three first threaded holes 12 which are uniformly distributed around the central line of the belt pulley 1 are formed in the step surface 11 of the stepped hole; in other embodiments, an inward turned edge is arranged on the axial end surface of the belt pulley 1, the first threaded hole 12 can also be arranged on the inward turned edge of the belt pulley 1, and the inner hole of the belt pulley 1 is an equal-diameter hole.
As shown in fig. 1, the cover plate 2 is located on one side of the pulley 1, which is axially away from the motor shaft 5, a through hole 21 matched with the three first threaded holes 12 is arranged at a corresponding position of the cover plate 2, a tension screw 3 is arranged in the through hole 21, the tension screw 3 is matched with the first threaded hole 12 on the pulley 1, and the cover plate 2 and the pulley 1 are detachably connected through the tension screw 3 and the first threaded hole 12. The side of the cover plate close to the motor shaft 5 is defined as the inner side, and the inner wall surface of the cover plate 2 is matched with the step surface 11 in a blocking way to form a pushing part for pushing the belt pulley 1.
Be equipped with on motor shaft 5 around its central line evenly distributed's three second screw hole 51, the relevant position of apron 2 is equipped with three screw mounting hole 22 with second screw hole 51 complex, wears to be equipped with fastening screw 4 in the screw mounting hole 22, and fastening screw 4 and second screw hole 51 adaptation pass through fastening screw 4 and second screw hole 51 fixed connection between apron 2 and the motor shaft 5.
The outer wall surface of the cover plate 2 forms an impact portion for impact by a tool, which impacts the outer wall surface of the cover plate 2 to push the pulley 1. Still be equipped with sleeve pipe 23 on the outer wall of apron 2, the hole of sleeve pipe 23 is the screw hole, and this screw hole is used for with dismantling bolt 6 adaptation. The outer wall surface of the cover plate 2 is also provided with a reinforcing rib 24, the reinforcing rib 24 extends along the radial direction of the cover plate 2, the end part of the reinforcing rib 24 is connected with the sleeve 23, and the reinforcing rib 24 can increase the structural strength of the outer wall surface of the cover plate 2 and the structural strength of the joint of the cover plate 2 and the sleeve 23. The dismounting bolt 6 generates axial displacement through a threaded structure and pushes the motor shaft 5, meanwhile, an acting force in the opposite direction is applied to the cover plate 2, so that the cover plate 2 and the belt pulley 1 are separated from the motor shaft 5, and an inner hole of the sleeve 23 forms a dismounting bolt mounting hole; in other embodiments, the sleeve 23 may be omitted, and the removal bolt attachment hole may be formed by providing a female screw in the center hole of the cover plate 2.
As shown in fig. 1, when the belt pulley 1 needs to be installed on the motor shaft 5, firstly, the fastening screw 4 penetrates through the screw installation hole 22 on the cover plate 2 and is pre-installed in the second threaded hole 51 on the motor shaft 5, the iron bar 7 is pushed against the outer wall surface of the cover plate 2, the iron bar 7 is provided with an avoidance hole 71 for avoiding the sleeve 23 and an avoidance groove 72 for avoiding the reinforcing rib 24, the iron bar 7 is knocked by a hammer, the inner wall surface of the cover plate 2 pushes the belt pulley 1 to enable the belt pulley 1 to be in interference fit with the motor shaft 5, and the fastening screw 4 is screwed to complete the installation of the belt pulley; when the belt pulley is disassembled, the fastening screw 4 is disassembled, the tensioning screw 3 penetrates through the through hole 21 on the cover plate 2 and is screwed into the first threaded hole 12, the disassembling bolt 6 is screwed into the inner hole of the sleeve 23, and the disassembling bolt 6 is rotated by using tools such as a pipe wrench and the like, so that the belt pulley assembly can be separated from the motor shaft 5.
The utility model discloses a belt pulley mounting structure's embodiment 2, the difference with embodiment 1 lies in: the apron passes through lag screw and first screw hole fixed connection with the belt pulley among the embodiment 1, and in this embodiment, the welding has the bolt on the belt pulley, and the perforation on the apron is passed through to the pole portion of bolt, is equipped with the nut on the bolt, and the apron passes through bolt and nut fixed connection with the belt pulley.
In other embodiments, a shoulder may also be provided on the sleeve, the shoulder forming the impact portion of the cover plate; or a boss is arranged on the inner wall surface of the cover plate, and the boss forms a pushing part for pushing the step surface of the stepped hole on the belt pulley.
The utility model discloses an embodiment of belt pulley subassembly, its concrete structure is the same with the concrete structure of the belt pulley subassembly of the belt pulley mounting structure in above-mentioned arbitrary embodiment, and it is no longer repeated here.
Claims (10)
1. Pulley assembly, including the belt pulley, its characterized in that: still include with belt pulley releasable connection's apron, be equipped with on the apron and be used for supplying the instrument to strike with the impact portion of top push pulley interference suit on the motor shaft, be equipped with on the apron and be used for pushing away the complex top with the belt pulley and push away the portion, still be equipped with on the apron and be used for corresponding with the screw hole on the motor shaft in order to wear the dress with apron, belt pulley and motor shaft fastening assembly fastening screw's together screw mounting hole, still be equipped with the dismantlement bolt mounting hole on the apron, the dismantlement bolt mounting hole is used for wearing the dismantlement bolt of dress top push away motor shaft.
2. The pulley assembly of claim 1, wherein: the inner hole of the belt pulley is a stepped hole, and the pushing part of the cover plate pushes the stepped surface of the stepped hole to be matched with the belt pulley in a pushing mode.
3. The pulley assembly according to claim 1 or 2, characterized in that: the impact part is an outer wall surface of the cover plate.
4. The pulley assembly according to claim 1 or 2, characterized in that: the cover plate is provided with a sleeve, and an inner hole of the sleeve forms the mounting hole of the dismounting bolt.
5. The pulley assembly of claim 4, wherein: the cover plate is also provided with a reinforcing rib which extends along the radial direction of the cover plate and is connected with the sleeve.
6. belt pulley mounting structure, including motor shaft and belt pulley assembly, belt pulley assembly includes belt pulley, its characterized in that: the belt pulley assembly further comprises a cover plate detachably connected with the belt pulley, the cover plate is provided with an impact part for allowing an instrument to impact to push the belt pulley to be sleeved on the motor shaft in an interference mode, the cover plate is provided with a pushing part matched with the belt pulley in a pushing mode, a threaded hole is formed in the motor shaft, the cover plate is further provided with a screw mounting hole used for corresponding to the threaded hole in the motor shaft to penetrate through a fastening screw for fastening and assembling the cover plate, the belt pulley and the motor shaft together, the cover plate is further provided with a dismounting bolt mounting hole, and the dismounting bolt mounting hole is used for penetrating through a dismounting bolt for pushing the.
7. The pulley mounting structure according to claim 6, wherein: the inner hole of the belt pulley is a stepped hole, and the pushing part of the cover plate pushes the stepped surface of the stepped hole to be matched with the belt pulley in a pushing mode.
8. The pulley mounting structure according to claim 6 or 7, wherein: the impact part is an outer wall surface of the cover plate.
9. The pulley mounting structure according to claim 6 or 7, wherein: the cover plate is provided with a sleeve, and an inner hole of the sleeve forms the mounting hole of the dismounting bolt.
10. The pulley mounting structure according to claim 9, wherein: the cover plate is also provided with a reinforcing rib which extends along the radial direction of the cover plate and is connected with the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920269828.5U CN209748349U (en) | 2019-03-04 | 2019-03-04 | Belt pulley assembly and belt pulley mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920269828.5U CN209748349U (en) | 2019-03-04 | 2019-03-04 | Belt pulley assembly and belt pulley mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209748349U true CN209748349U (en) | 2019-12-06 |
Family
ID=68708840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920269828.5U Active CN209748349U (en) | 2019-03-04 | 2019-03-04 | Belt pulley assembly and belt pulley mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209748349U (en) |
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2019
- 2019-03-04 CN CN201920269828.5U patent/CN209748349U/en active Active
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