CN215673470U

CN215673470U - Non-flanging belt pulley based on rotary cutting and spinning process

Info

Publication number: CN215673470U
Application number: CN202122025317.9U
Authority: CN
Inventors: 胡正科
Original assignee: Wuxi Jiake Metal Products Co ltd
Current assignee: Wuxi Jiake Metal Products Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-28
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a non-flanging belt pulley based on rotary cutting and spinning processes, which comprises a belt pulley body, wherein a mounting hole is formed in the center of the belt pulley body, a central shaft is arranged in the mounting hole, a shaft hole is formed in the central shaft, a key groove is formed in the inner wall of the shaft hole, a first semicircular groove with threads is formed in the inner wall of the mounting hole, a second semicircular groove and a first bolt which correspond to the first semicircular groove are formed in the central shaft, and the first bolt is connected with the first semicircular groove and the second semicircular groove in a matched mode; the outer end of the belt pulley body is provided with an outer ring, the outer surface of the outer ring is inwards sunken to form an annular groove, the inner surface of the outer ring is provided with a third semicircular groove containing threads, the outer surface of the belt pulley body is provided with a fourth semicircular groove and a second bolt corresponding to the third semicircular groove, and the second bolt is connected with the third semicircular groove and the fourth semicircular groove in a matched mode.

Description

Non-flanging belt pulley based on rotary cutting and spinning process

Technical Field

The utility model relates to the technical field of belt pulleys, in particular to a non-flanging belt pulley based on rotary cutting and spinning processes.

Background

The pulley is widely used in fluid machinery as an important mechanical transmission part, and generally comprises a rim, a web and a hub. In long-time use, the belt pulley can take place wearing and tearing, can reduce the transmission efficiency to motor power, influence the work efficiency of whole machine, at this moment just need to change the belt pulley, the belt pulley in the past is the integral type, must change whole belt pulley when changing, the replacement cost is not low, so need a cost-effective method, for example, patent No. CN201210168675.8 proposes to be equipped with dismantled and assembled sheath through belt pulley body central authorities, when the junction of the output shaft of sheath and motor produced wearing and tearing after long-time the use, only need to change the sheath can, use cost is reduced, but this patent only proposes the solution mode of belt pulley and motor shaft junction wearing and tearing, the wearing and tearing of belt pulley and belt have been ignored, and it is too loaded down with trivial details to fix through bolt and nut.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a non-flanging belt pulley based on rotary cutting and spinning processes.

(II) technical scheme

In order to achieve the above purpose, the utility model provides the following technical scheme: a non-flanging belt pulley based on rotary cutting and spinning processes comprises a belt pulley body, wherein a mounting hole is formed in the center of the belt pulley body, a central shaft is arranged in the mounting hole, a shaft hole is formed in the central shaft, a key groove is formed in the inner wall of the shaft hole, a first semicircular groove is formed in the inner wall of the mounting hole, a second semicircular groove corresponding to the first semicircular groove is formed in the outer surface of the central shaft, threads and first bolts corresponding to each other are arranged in the first semicircular groove and the second semicircular groove, and the first bolts are connected with the first semicircular groove and the second semicircular groove in a matched mode; the outer ring is arranged at the outer end of the belt pulley body, the outer surface of the outer ring is inwards sunken to form an annular groove, the inner surface of the outer ring is provided with a third semicircular groove, the outer surface of the belt pulley body is provided with a fourth semicircular groove corresponding to the third semicircular groove, threads and second bolts which correspond to each other are arranged in the third semicircular groove and the fourth semicircular groove, and the second bolts are connected with the third semicircular groove and the fourth semicircular groove in a matched mode.

Preferably, the outer ring is provided with heat dissipation holes.

In a further preferred embodiment, the annular groove is provided with a plurality of anti-slip grooves on the bottom surface.

In a further preferred mode, the first bolt and the second bolt respectively comprise a threaded rod and a nut, the nut is provided with a cross groove, and the threaded rod and the nut are integrally formed.

In a further preferred embodiment, circular grooves corresponding to the nuts are provided at positions where the first semicircular groove, the second semicircular groove, the third semicircular groove and the fourth semicircular groove contact the nuts.

In a further preferred embodiment, the pulley body, the central shaft and the outer ring are located on the same axis.

In a further preferred embodiment, a plurality of first semicircular grooves, a plurality of second semicircular grooves and a plurality of first bolts are provided in correspondence with each other, and a plurality of third semicircular grooves, a plurality of fourth semicircular grooves and a plurality of second bolts are provided in correspondence with each other.

(III) advantageous effects

Compared with the prior art, the utility model provides a non-flanging belt pulley based on rotary cutting and spinning processes, which has the following beneficial effects:

according to the utility model, the center of the belt pulley body is provided with the mounting hole, the mounting hole is internally provided with the detachable central shaft, and the belt pulley body is connected with the motor shaft through the shaft hole and the key groove in the central shaft; be equipped with the outer loop in belt pulley body outer lane, be equipped with annular groove on the outer loop, through the fixed belt of annular groove, in long-time use, when the junction of center pin and motor shaft can produce wearing and tearing or the contact department of annular groove and belt produces wearing and tearing, only need to change center pin or outer loop can, and need not change whole belt pulley again to save use cost: meanwhile, a semicircular groove with threads is formed in the connecting position of the belt pulley body, the central shaft and the outer ring and is fixed by bolts, so that on one hand, the connection is firmer, and on the other hand, the volume of the belt pulley is reduced, and the use is more convenient; compared with a welding processing method, the belt pulley processed by adopting the integral spinning and rotary cutting process overcomes the deformation and fatigue fracture caused by welding, improves the fatigue strength, and increases the density of the material after spinning, thereby improving the strength of parts and meeting the use performance.

Drawings

FIG. 1 is a schematic view of a non-flanged pulley in a three-dimensional structure based on rotary cutting and spinning processes according to the present invention;

FIG. 2 is a schematic view of a pulley and a bolt according to the present invention;

FIG. 3 is a schematic view of the connection structure of the pulley body with the central shaft and the outer ring.

In the figure: 1. a pulley body; 2. mounting holes; 3. a central shaft; 4. a shaft hole; 5. a keyway; 6. a first semicircular groove; 7. a second semi-circular groove; 8. a first bolt; 9. an outer ring; 10. an annular groove; 11. a third semi-circular groove; 12. a fourth semi-circular groove; 13. a second bolt; 14. heat dissipation holes; 15. an anti-slip groove; 16. a threaded rod; 17. a nut; 18. a cross groove; 19. a circular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1-3, a non-flanging belt pulley based on rotary cutting and spinning processes comprises a belt pulley body 1, wherein a mounting hole 2 is formed in the center of the belt pulley body 1, a central shaft 3 is arranged in the mounting hole 2, a shaft hole 4 is formed in the central shaft 3, a key groove 5 is formed in the inner wall of the shaft hole 4, a first semicircular groove 6 is formed in the inner wall of the mounting hole 2, a second semicircular groove 7 corresponding to the first semicircular groove 6 is formed in the outer surface of the central shaft 3, corresponding threads and first bolts 8 are arranged in the first semicircular groove 6 and the second semicircular groove 7, and the first bolts 8 are connected with the first semicircular groove 6 and the second semicircular groove 7 in a matched manner; the outer end of the belt pulley body 1 is provided with an outer ring 9, the outer surface of the outer ring 9 is inwards sunken to form an annular groove 10, the inner surface of the outer ring 9 is provided with a third semicircular groove 11, the outer surface of the belt pulley body 1 is provided with a fourth semicircular groove 12 corresponding to the third semicircular groove 11, threads and second bolts 13 which correspond to each other are arranged in the third semicircular groove 11 and the fourth semicircular groove 12, and the second bolts 13 are connected with the third semicircular groove 11 and the fourth semicircular groove 12 in a matched mode.

In this embodiment, the heat dissipation holes 14 are formed in the outer ring 9 to increase the heat dissipation capability of the pulley, prevent the transmission efficiency from being affected by overheating of the pulley, and simultaneously save material cost and weight.

In this embodiment, the bottom surface of the annular groove 10 is provided with a plurality of anti-slip grooves 15, so as to increase the friction between the outer ring 9 and the belt and increase the transmission efficiency.

In this embodiment, the first bolt 8 and the second bolt 13 respectively comprise a threaded rod 16 and a nut 17, and the nut 17 is provided with a cross-shaped groove 18, and the threaded rod 16 and the nut 17 are integrally formed, so that the bolts can be easily assembled and disassembled.

In this embodiment, the contact positions of the first semicircular groove 6, the second semicircular groove 7, the third semicircular groove 11 and the fourth semicircular groove 12 and the nut 17 are provided with a circular groove 19 corresponding to the nut 17, so that the bolt can be completely installed in the belt pulley, and the abrasion caused by the protruding part is avoided.

In this embodiment, the belt pulley body 1, the central shaft 3 and the outer ring 9 are located on the same axis, so that the belt pulley is more stable, and the transmission quality is ensured.

In this embodiment, the first semicircular groove 6, the second semicircular groove 7 and the first bolt 8 are respectively provided with a plurality of corresponding parts, the third semicircular groove 11, the fourth semicircular groove 12 and the second bolt 13 are respectively provided with a plurality of corresponding parts, and a plurality of groups of connecting mechanisms are added to ensure that the connection among the belt pulley body 1, the central shaft 3 and the outer ring 9 is more stable.

The working principle is as follows:

in summary, when the utility model is installed, the central shaft 3 is placed in the installation hole 2, the bar outer ring 9 is placed on the outer ring of the belt pulley body 1, the central shaft 3 and the outer ring 9 are positioned on the same axis, the first semicircular groove 6 is aligned with the second semicircular groove 7 to form a threaded circular hole, the threaded rod 16 of the first bolt 8 is screwed into the circular hole formed by the first semicircular groove 6 and the second semicircular groove 7 along the thread through the cross groove 18, the nut 17 of the first bolt 8 is sunk into the circular groove 19 to complete the fixation of the belt pulley body 1 and the central shaft 3, the third semicircular groove 11 is aligned with the fourth semicircular groove 12 to form a threaded circular hole, the threaded rod 16 of the second bolt 13 is screwed into the circular hole formed by the third semicircular groove 11 and the fourth semicircular groove 12 along the thread through the cross groove 18, the nut 17 of the second bolt 13 is sunk into the circular groove 19, fixing the belt pulley body 1 and the outer ring 9 is completed, a belt used in working is sleeved in the annular groove 10, an external driving shaft is inserted into the shaft hole 4, and fixing between the central shaft 3 and the driving shaft is completed through the key groove 5; the during operation, outside driving shaft rotates, through the connection of keyway 5, the driving shaft can drive center pin 3 and rotate together, center pin 3 and then drive whole belt pulley and rotate together, the belt pulley drives belt transmission, several antiskid ribbed tile 15 can increase the frictional force between annular groove 10 and belt simultaneously and increase transmission efficiency, in the friction of outer loop 9 constantly with the belt, outer loop 9 can produce the heat, dispel the heat through louvre 14, avoid outer loop 9 overheated to produce the influence to the transmission.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a not turn-ups belt pulley based on rotary-cut and spinning technology, includes belt pulley body (1), its characterized in that: the belt pulley is characterized in that a mounting hole (2) is formed in the center of the belt pulley body (1), a central shaft (3) is arranged in the mounting hole (2), a shaft hole (4) is formed in the central shaft (3), a key groove (5) is formed in the inner wall of the shaft hole (4), a first semicircular groove (6) is formed in the inner wall of the mounting hole (2), a second semicircular groove (7) corresponding to the first semicircular groove (6) is formed in the outer surface of the central shaft (3), mutually corresponding threads and first bolts (8) are arranged in the first semicircular groove (6) and the second semicircular groove (7), and the first bolts (8) are connected with the first semicircular groove (6) and the second semicircular groove (7) in a matched mode; belt pulley body (1) outer end is equipped with outer ring (9), outer ring (9) surface is inwards sunken to form annular groove (10), and outer ring (9) internal surface is equipped with third half slot (11), belt pulley body (1) surface is equipped with fourth half slot (12) that correspond with third half slot (11), and is equipped with screw thread and second bolt (13) that correspond each other in third half slot (11) and fourth half slot (12), second bolt (13) are connected with third half slot (11) and fourth half slot (12) cooperation.

2. The non-flanging pulley based on rotary-cut and spinning processes of claim 1, wherein: the belt pulley body (1) is provided with heat dissipation holes (14).

3. The non-flanging pulley based on rotary-cut and spinning processes of claim 1, wherein: the bottom surface of the annular groove (10) is provided with an anti-skid groove (15).

4. The non-flanging pulley based on rotary-cut and spinning processes of claim 1, wherein: first bolt (8) and second bolt (13) are equipped with cross recess (18) including threaded rod (16) and nut (17) respectively on nut (17), threaded rod (16) and nut (17) integrated into one piece.

5. The non-flanged pulley based on rotary cutting and spinning process according to claim 4, characterized in that: and circular grooves (19) corresponding to the screw caps (17) are arranged at the contact positions of the first semicircular groove (6), the second semicircular groove (7), the third semicircular groove (11) and the fourth semicircular groove (12) and the screw caps (17).

6. The non-flanging pulley based on rotary-cut and spinning processes of claim 1, wherein: the belt pulley body (1), the central shaft (3) and the outer ring (9) are located on the same axis.

7. The non-flanging pulley based on rotary-cut and spinning processes of claim 1, wherein: the first semicircular groove (6), the second semicircular groove (7) and the first bolt (8) are respectively provided with a plurality of corresponding parts, and the third semicircular groove (11), the fourth semicircular groove (12) and the second bolt (13) are respectively provided with a plurality of corresponding parts.