CN111895070B

CN111895070B - Flexible drive generator surmounts belt pulley

Info

Publication number: CN111895070B
Application number: CN202010596804.8A
Authority: CN
Inventors: 王文焕
Original assignee: Alt Jiangsu Industrial Co ltd
Current assignee: Alt Jiangsu Industrial Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2022-03-11
Anticipated expiration: 2040-06-28
Also published as: CN111895070A

Abstract

The invention belongs to the technical field of accessory belt transmission systems, and particularly relates to a flexible drive generator overrunning belt pulley which comprises a belt pulley body, a planar one-way roller bearing, a shaft sleeve, a drive spring, an inner shaft, a shaft lining ring and a ball bearing. The invention has the unidirectional coupling function of a common overrunning belt pulley, and is provided with the driving spring in the forward driving direction, the influence of the torsional vibration of the crankshaft on the wheel train is effectively eliminated through the driving flexibility of the spring, the problem of belt shake is better solved, the slip rate of the belt is reduced, abnormal sound is effectively eliminated, the energy consumption is reduced, and the service life of each accessory system component is prolonged.

Description

Flexible drive generator surmounts belt pulley

Technical Field

The invention relates to the technical field of accessory belt transmission systems, in particular to a flexible drive generator overrunning belt pulley.

Background

Conventional generator pulleys are rigid or overrunning pulleys using OAP unidirectional coupling. The rigid belt pulley can not eliminate the influence of the operation of the generator rotor under strong rotational inertia on the wheel system, the system abrasion, the belt shake and the slipping, the noise is generated, and the service life is reduced. Although the OAP unidirectional coupling overrunning belt pulley can solve the influence of strong rotational inertia of a generator rotor on a wheel train, the OAP can not solve the problem of irregular torsional vibration of an engine during forward driving, and a large amount of energy is lost.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the overrunning belt pulley of the flexible driving generator, which solves the problem that the traditional generator belt pulley is a rigid belt pulley or an overrunning belt pulley which is unidirectionally coupled by using an OAP (open air Power). The rigid belt pulley can not eliminate the influence of the operation of the generator rotor under strong rotational inertia on the wheel system, the system abrasion, the belt shake and the slipping, the noise is generated, and the service life is reduced. Although the OAP unidirectional coupling overrunning belt pulley can solve the influence of strong rotational inertia of a generator rotor on a wheel train, the problem that the OAP cannot solve the irregular torsional vibration problem of an engine in forward driving and a large amount of energy is lost is solved.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a flexible drive generator overrunning belt pulley comprises a belt pulley, a planar one-way roller bearing, a shaft sleeve, a drive spring, a shaft lining ring and a ball bearing, wherein gear teeth are arranged on the outer surface of the belt pulley, a space ring is arranged on the inner surface of the belt pulley, a first assembly inner circular surface and a second assembly inner circular surface are respectively arranged on the inner surface of the belt pulley corresponding to the front end and the rear end of the space ring, the planar one-way roller bearing comprises a bearing sheet body and a support sheet, a first outer circular surface is arranged on the outer surface of the bearing sheet body, the first outer circular surface is tightly matched with the first assembly inner circular surface, an inclined surface is arranged on the bearing sheet body, a roller matched with the inclined surface is arranged in the bearing sheet body, the side plane of the support sheet is attached to the side surface of the space ring, the belt pulley, the bearing sheet body, the roller and the support sheet are rigidly connected, key grooves are uniformly distributed on the inner surface of the support sheet, an extension end is arranged on one side wall of the shaft sleeve, a convex key in sliding fit with the key groove is arranged on the extension end, a first spiral surface is arranged on the other side wall of the shaft sleeve, a first driving plane is arranged on the first spiral surface, a first inner circular surface is coaxially arranged inside the shaft sleeve and the extension end, a second spiral surface attached to the first spiral surface is arranged at the front end of the driving spring, a first end head plane attached to the first driving plane is arranged at one end of the driving spring, a third spiral surface is arranged at the rear end of the driving spring, a second end head plane is arranged at one end of the driving spring, far away from the first end head plane, a second outer circular surface in sliding fit with the first inner circular surface is arranged on the inner shaft, a diameter expansion end is arranged on the inner shaft, and a second driving plane attached to the second end head plane on the side wall, close to the second outer circular surface, of the diameter expansion end, a fourth screw surface which is attached to the third screw surface on the driving spring is arranged on the side wall of the diameter expanding end close to the second outer circular surface, an diameter expanding circular surface is arranged on the diameter expanding end, flanges are arranged along the left and right sides of the diameter-expanding circular surface, a bearing connecting end is arranged at one end of the inner shaft far away from the diameter-expanding end, an off-axis circular surface is arranged on the bearing connecting end, the lining ring is provided with an inner circle surface of the lining ring, a side surface of the lining ring and an outer circle surface of the lining ring, the inner circle surface of the lining ring is in sliding fit with the expanding circle surface, the side surface of the lining ring is positioned and sleeved between the left and the right flanges on the shaft, the excircle surface of the lining ring supports the second assembly inner circle surface on the belt pulley, the outer circle surface of the lining ring is in sliding fit with the second assembly inner circle surface, the outer circle and the inner circle of the ball bearing are respectively provided with a third outer circle surface and a second inner circle surface, the third outer circular surface is tightly matched with the first assembly inner circular surface, and the second inner circular surface is tightly matched with the shaft outer circular surface.

As a preferable technical scheme of the invention, the gear teeth are in a wedge shape and are matched with the multi-wedge belt.

In a preferred embodiment of the present invention, the bushing ring is made of gray cast iron, nylon or an alloy such as tin, lead, copper, antimony, or the like.

As a preferable technical scheme of the invention, the shaft is arranged in a hollow manner, the inner wall of the shaft is provided with threads connected with the engine shaft, and the surface of the inner wall of the shaft corresponding to the diameter expanding end is provided with splines.

(III) advantageous effects

Compared with the prior art, the invention provides the overrunning belt pulley of the flexible driving generator, which has the following beneficial effects:

this flexible drive generator surmounts the belt pulley, except having the ordinary unidirectional coupling effect that surmounts the belt pulley, has drive spring in the design of forward drive direction, and the flexible effectual torsional vibration who eliminates the bent axle of drive through the spring is to the influence of train, the better shake of having solved the belt, reduces the slip rate of beating of belt, the effectual abnormal sound of elimination, reduces energy resource consumption, the life of each annex system subassembly of extension.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of the relative positions of the flat one-way roller bearing, drive spring, shaft bushing and bushing ring of the present invention as assembled;

FIG. 4 is a schematic view of a pulley according to the present invention;

FIG. 5 is a schematic view of the construction of a flat one-way roller bearing according to the present invention;

FIG. 6 is an enlarged view of a portion of the flat one-way roller bearing of the present invention;

FIG. 7 is a schematic structural view of a support sheet according to the present invention;

FIG. 8 is a schematic structural view of the bushing of the present invention;

FIG. 9 is a schematic view of the structure of the driving spring according to the present invention;

FIG. 10 is a schematic view of the construction of the shaft according to the present invention;

FIG. 11 is a cross-sectional view of a shaft according to the present invention;

FIG. 12 is a schematic view of the structure of the bushing ring of the present invention

Fig. 13 is a schematic structural view of a ball bearing according to the present invention.

In the figure: 1. a belt pulley; 2. gear teeth; 3. a first assembly inner circular surface; 4. a planar one-way roller bearing; 5. a bearing sheet body; 6. a first outer circular surface; 7. a bevel; 8. a roller; 9. a support sheet; 10. a side plane; 11. a keyway; 12. a shaft sleeve; 13. a convex key; 14. a first helicoid; 15. a first driving plane; 16. a drive spring; 17. a second helicoid; 18. a first end plane; 19. an inner shaft; 20. a second outer circular surface; 21. a first inner circular surface; 22. a second drive plane; 23. a second end planar surface; 24. a fourth helicoid; 25. a third helicoid; 26. a shaft bushing; 27. a gasket inner circumference; 28. a gasket side; 29. a gasket outer circumferential surface; 30. expanding the diameter of the round surface; 31. blocking edges; 32. a second assembly inner circular surface; 33. a ball bearing; 34. a third outer circular surface; 35. a second inner circular surface; 36. the outer circle surface of the shaft; 37. a thread; 38. a spline.

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.

Examples

Referring to fig. 1-13, the present invention provides the following technical solutions: a flexible drive generator overrunning belt pulley comprises a belt pulley 1, a planar one-way roller bearing 4, a shaft sleeve 12, a drive spring 16, an inner shaft 19, a bushing ring 26 and a ball bearing 33, wherein gear teeth 2 are arranged on the outer surface of the belt pulley 1, a space ring is arranged on the inner surface of the belt pulley 1, a first assembly inner circular surface 3 and a second assembly inner circular surface 32 are respectively arranged on the inner surface of the belt pulley 1 corresponding to the front end and the rear end of the space ring, the planar one-way roller bearing 4 comprises a bearing sheet body 5 and a support sheet 9, a first outer circular surface 6 is arranged on the outer surface of the bearing sheet body 5, the first outer circular surface 6 is tightly matched with the first assembly inner circular surface 3, an inclined plane 7 is arranged on the bearing sheet body 5, rollers 8 matched with the inclined plane 7 are arranged in the bearing sheet body 5, a side plane 10 of the support sheet 9 is attached to the side surface of the space ring, the belt pulley 1, the bearing sheet body 5, the rollers 8 are rigidly connected with the support sheet 9, key grooves 11 are uniformly distributed on the inner surface of the support sheet 9, an extending end is arranged on one side wall of the shaft sleeve 12, a convex key 13 which is in sliding fit with the key groove 11 is arranged on the extending end, a first spiral surface 14 is arranged on the other side wall of the shaft sleeve 12, a first driving plane 15 is arranged on the first spiral surface 14, a first inner circular surface 21 is coaxially arranged inside the shaft sleeve 12 and the extending end, a second spiral surface 17 which is attached to the first spiral surface 14 is arranged at the front end of the driving spring 16, a first end head plane 18 which is attached to the first driving plane 15 is arranged at one end of the driving spring 16, a third spiral surface 25 is arranged at the rear end of the driving spring 16, a second end head plane 23 is arranged at one end, away from the first end head plane 18, of the driving spring 16, a second outer circular surface 20 which is in sliding fit with the first inner circular surface 21 is arranged on the inner shaft 19, an expanding end is arranged on the inner shaft 19, a second driving plane 22 which is attached to the second end head plane 23 on the driving spring 16 is arranged on the side wall of the expanding end close to the second outer circular surface 20, a fourth spiral surface 24 attached to a third spiral surface 25 on the driving spring 16 is arranged on the side wall of the diameter expansion end close to the second outer circular surface 20, an diameter expansion circular surface 30 is arranged on the diameter expansion end, flanges 31 are arranged on the left and right sides of the diameter expansion circular surface 30, a bearing connecting end is arranged at one end of the inner shaft 19 far away from the diameter expansion end, an outer circular surface 36 of the shaft is arranged on the bearing connecting end, a lining ring inner circular surface 27, a lining ring side surface 28 and a lining ring outer circular surface 29 are arranged on the lining ring 26, the lining ring inner circular surface 27 is in sliding fit with the diameter expansion circular surface 30, the lining ring side surface 28 is positioned and sleeved between the left and right flanges 31 on the inner shaft 19, the lining ring outer circular surface 29 supports a second assembling inner circular surface 32 on the belt pulley 1, the lining ring outer circular surface 29 is in sliding fit with the second assembling inner circular surface 32, a third outer circular surface 34 and a second inner surface 35 are respectively arranged on the outer ring and the inner ring of the ball bearing 33, and the third outer circular surface 34 is in tight fit with the first assembling inner surface 3, the second inner circular surface 35 is a close fit with the shaft outer circular surface 36.

Specifically, the gear teeth 2 are in a wedge shape, and the gear teeth 2 are matched with the V-ribbed belt.

In this embodiment, the belt pulley 1 is provided with a plurality of gear teeth 2, the gear teeth 2 are in a wedge shape and are matched with a poly-wedge belt, and the poly-wedge belt rubs with a wedge surface to drive the belt pulley 1 to operate when operating.

Specifically, the collar 26 is made of gray cast iron, nylon, or an alloy such as tin, lead, copper, antimony, or the like.

In the embodiment, the bushing ring 26 made of gray cast iron is commonly used under the conditions of low speed, light load and no impact load, and comprises HT15-33 and HT 20-40; nylon 6, nylon 66 and nylon 1010 are commonly used, and the bushing ring 26 made of the nylon has the advantages of good running performance, no damage to a shaft neck by a worn scrap soft surface, good corrosion resistance and the like; the shaft liner 26 is made of bearing alloy (babbitt metal) which is an alloy of tin, lead, copper, antimony, etc. and has good wear resistance but low strength, and cannot be made into a bearing bush alone, and is usually cast on a bearing bush substrate of bronze, cast iron, steel, etc.

Specifically, the inner shaft 19 is hollow, a thread 37 connected with the engine shaft is arranged on the inner wall of the inner shaft 19, and a spline 38 is arranged on the inner wall surface of the inner shaft 19 corresponding to the diameter expanding end.

In this embodiment, the inner shaft 19 is connected to the generator shaft through internal threads 37 of the inner shaft to drive the rotor to rotate, and the inner shaft 19 is engaged with a special installation wrench through splines 38 on the internal hole wall to install the pulley assembly on the generator shaft.

The working principle and the using process of the invention are as follows: during assembly, the inner shaft 19 is connected with a generator shaft through inner hole internal threads 37 of the inner shaft to drive the rotor to rotate, the inner shaft 19 is matched with a special installation wrench through splines 38 on the inner hole wall of the inner shaft, and the belt wheel assembly is installed on the generator shaft; when the belt pulley is used, the belt pulley 1 is driven to rotate, the bearing sheet body 5 is driven to rotate when the bearing sheet body 5 rotates clockwise, the inclined plane 7 pushes the roller 8 to rotate, the roller 8 moves leftwards, the roller 8 presses the supporting sheet 9, the side plane 10 of the supporting sheet 9 is attached to the side face of the inner ring of the belt pulley 1, the bearing sheet body 5, the roller 8 and the supporting sheet 9 are in rigid connection and rotate along with the rotation of the belt pulley 1, the supporting sheet 9 drives the shaft sleeve 12 to rotate through the sliding fit of the key groove 11 and the convex key 13, the first end plane 18 is driven by the first driving plane 15 when the shaft sleeve 12 rotates, and the influence of the torsional vibration of a crankshaft on a wheel train is effectively eliminated through the driving flexibility of the driving spring 16 in the using process.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a flexible drive generator surmounts belt pulley, includes belt pulley (1), one-way roller bearing in plane (4), axle sleeve (12), driving spring (16), interior axle (19), bushing ring (26) and ball bearing (33), its characterized in that: the belt pulley is characterized in that gear teeth (2) are arranged on the outer surface of the belt pulley (1), a space ring is arranged on the inner surface of the belt pulley (1), a first assembly inner circular surface (3) and a second assembly inner circular surface (32) are respectively arranged at the front end and the rear end of the inner surface of the belt pulley (1) corresponding to the space ring, the planar one-way roller bearing (4) comprises a bearing sheet body (5) and a support sheet (9), a first outer circular surface (6) is arranged on the outer surface of the bearing sheet body (5), the first outer circular surface (6) is tightly matched with the first assembly inner circular surface (3), an inclined surface (7) is arranged on the bearing sheet body (5), a roller (8) matched with the inclined surface (7) is arranged in the bearing sheet body (5), a side plane (10) of the support sheet (9) is attached to the side surface of the space ring, and the belt pulley (1), the bearing sheet body (5), the roller (8) and the support sheet (9) are rigidly connected, the inner surface of the supporting sheet (9) is uniformly provided with key grooves (11), one side wall of the shaft sleeve (12) is provided with an extending end, the extending end is provided with a convex key (13) in sliding fit with the key grooves (11), the other side wall of the shaft sleeve (12) is provided with a first spiral surface (14), the first spiral surface (14) is provided with a first driving plane (15), the shaft sleeve (12) and the extending end are coaxially provided with a first inner circular surface (21), the front end of the driving spring (16) is provided with a second spiral surface (17) attached to the first spiral surface (14), one end of the driving spring (16) is provided with a first end plane (18) attached to the first driving plane (15), the rear end of the driving spring (16) is provided with a third spiral surface (25), and the end of the driving spring (16) far away from the first end plane (18) is provided with a second end plane (23), a second outer circular surface (20) in sliding fit with the first inner circular surface (21) is arranged on the inner shaft (19), a diameter expanding end is arranged on the inner shaft (19), a second driving plane (22) which is attached to a second end head plane (23) on the driving spring (16) is arranged on the side wall, close to the second outer circular surface (20), of the diameter expanding end, a fourth spiral surface (24) which is attached to a third spiral surface (25) on the driving spring (16) is arranged on the side wall, close to the second outer circular surface (20), of the diameter expanding end, a diameter expanding circular surface (30) is arranged on the diameter expanding end, blocking edges (31) are arranged on the left side edge and the right side edge of the diameter expanding circular surface (30), a bearing connecting end is arranged at one end, far away from the diameter expanding end, of the inner shaft (19), a shaft lining ring outer circular surface (36) is arranged on the bearing connecting end, an inner circular surface (27), a lining ring side surface (28) and a lining ring outer circular surface (29) are arranged on the shaft (26), the inner circle surface (27) of the lining ring is in sliding fit with the diameter-expanding circle surface (30), the side surface (28) of the lining ring is positioned and sleeved between the left and right flanges (31) on the inner shaft (19), the outer circle surface (29) of the lining ring supports the second assembling inner circle surface (32) on the belt pulley (1), the outer circle surface (29) of the lining ring is in sliding fit with the second assembling inner circle surface (32), the outer circle and the inner circle of the ball bearing (33) are respectively provided with a third outer circle surface (34) and a second inner circle surface (35), the third outer circle surface (34) is in tight fit with the first assembling inner circle surface (3), and the second inner circle surface (35) is in tight fit with the outer circle surface (36) of the shaft.

2. A flexible drive generator overrunning pulley according to claim 1 wherein: the gear teeth (2) are in a wedge shape, and the gear teeth (2) are matched with the V-ribbed belt.

3. A flexible drive generator overrunning pulley according to claim 1 wherein: the inner shaft (19) is arranged in a hollow mode, threads (37) connected with an engine shaft are arranged on the inner wall of the inner shaft (19), and splines (38) are arranged on the surface of the inner wall, corresponding to the diameter expanding end, of the inner shaft (19).