CN218761034U

CN218761034U - Ratchet type one-way belt pulley

Info

Publication number: CN218761034U
Application number: CN202222977668.4U
Authority: CN
Inventors: 张超; 马德杰; 王立松; 陈鹏; 张云龙
Original assignee: Shandong Geride Artificial Environment Industrial Design And Research Institute Co ltd
Current assignee: Shandong Geride Artificial Environment Industrial Design And Research Institute Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-28
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a ratchet type one-way belt pulley, which comprises a bearing inner ring, a ratchet wheel component, a bearing outer ring and a belt pulley from the axis to the outside in sequence; the ratchet wheel assembly comprises a supporting frame, a plurality of special-shaped rollers are arranged in the supporting frame, all the special-shaped rollers are obliquely arranged in the supporting frame, a middle ring of the ratchet wheel keeps the special-shaped rollers to be inclined at a certain angle, when the inner ring of the bearing rotates clockwise, the special-shaped rollers are pushed against the outer ring of the bearing, the power is larger, the extrusion is tighter, and the outer ring of the bearing is pushed by the special-shaped rollers to drive the belt pulley to rotate clockwise; if the mandrel rotates anticlockwise in the opposite direction, the inclination angle of the special-shaped roller is increased by the inner ring of the bearing, so that the special-shaped roller is separated from the support frame, the power of the inner ring of the bearing is removed, the condition of the special-shaped roller is kept by the elastic support of the middle ring of the ratchet wheel, and the special-shaped roller is reset when the special-shaped roller stops, so that the purpose of one-way transmission of the whole belt pulley is achieved.

Description

Ratchet type one-way belt pulley

Technical Field

The utility model relates to a transmission accessory technical field, concretely relates to be applied to unidirectional drive's one-way belt pulley of ratchet formula in industrial machinery.

Background

At present, in industrial machinery, belt transmission has the characteristics of impact mitigation, vibration reduction, stable transmission and the like, and is widely applied.

Some mechanical devices require unidirectional transmission power and mechanical transmission requirements (namely unidirectional power transmission) of slipping during reverse rolling, and in order to solve the requirements, a ratchet type unidirectional belt pulley is arranged in the current cost-saving implementation mode. But the ratchet structure of ratchet formula belt pulley on the existing market has multiple technical drawback, and it embodies: 1. when a roller meshing structure is adopted in the ratchet wheel type belt pulley, the rollers are always in a meshing state under the action of the thrust of the spring, and when the belt pulley slips reversely, a higher temperature is generated due to the action of friction resistance, so that the spring is heated and loses elasticity, and after the belt pulley is used for a long time, the function of unidirectional torque transmission of the belt pulley fails; 2. the ratchet wheel is complex in structure, complex in routine maintenance and repair, high in dimensional requirement precision, large in processing difficulty and not beneficial to popularization and use.

Summarizing the defects in the prior art, as a product development enterprise in the field, it is very necessary to develop a ratchet structure which can realize one-way transmission power and reverse slipping mechanical transmission, and the high-temperature and high-heat phenomena cannot occur in the function realization process.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an one-way belt pulley of ratchet formula, it passes through the structural modification, designs into the one-way slope mode with inside ratchet structure, can promote outside synchronous rotation when the revolving force increases when the drive is rotatory, accessible ratchet structure realizes driving power elimination when the non-drive is to the rotation to this realizes one-way ratchet drive.

The scheme of the utility model is as follows: a ratchet type one-way belt pulley comprises a bearing inner ring, a ratchet assembly, a bearing outer ring and a belt pulley; the ratchet wheel assembly comprises a supporting frame, wherein a plurality of special-shaped rollers are arranged in the supporting frame, and the special-shaped rollers are obliquely arranged in the supporting frame.

The support frame of the ratchet wheel assembly is arranged in multiple layers and comprises an inner ring frame, a middle ring frame and an outer ring frame; the inner ring frame, the middle ring frame and the outer ring frame are all provided with a plurality of through holes, and the inclined fixation of the special-shaped roller is realized through the through holes; the special-shaped roller is of a structure with thick two ends and thin middle part, and the outer ring frame, the middle ring frame and the inner ring frame are respectively fixed at the upper, middle and lower parts of the special-shaped roller.

In the center ring frame, be provided with towards the external diameter in its through-hole and stick up the limit, stick up the limit and be used for the elastic support after the special-shaped roller swings.

The bearing inner ring, the ratchet wheel assembly, the bearing outer ring and the belt pulley are assembled in the radial direction; in the axial direction, the left side and the right side of the ratchet wheel component are clamped and fixed through a check ring and a clamp spring respectively.

The left side and the right side of the ratchet wheel component are provided with two sets of check rings and clamp springs which are symmetrically arranged on the left side and the right side respectively.

When the utility model works, when the power shaft is used as the driving wheel, the power shaft drives the bearing inner ring to rotate through the flat key, the ratchet wheel component realizes the one-way transmission power, the bearing outer ring is driven to rotate in the positive rotation process, the bearing outer ring transmits the rotation power to the belt pulley through the flat key, and therefore the rotation kinetic energy of the power shaft is transmitted to a working machine through the belt; when the bearing inner ring rotates reversely, the ratchet wheel assembly idles to remove the rotational kinetic energy, and the purpose of one-way transmission is achieved. The outer diameter of the belt pulley can be made into a V shape, and the circular and plane sections of the belt pulley are used for being combined with an external belt to realize driving force transmission.

The utility model has the advantages that: through the structure arrangement, the utility model comprises a bearing inner ring, a ratchet wheel component, a bearing outer ring and a belt pulley from the axis to the outside in sequence; the ratchet wheel assembly comprises a supporting frame, a plurality of special-shaped rollers are arranged in the supporting frame, all the special-shaped rollers are obliquely arranged in the supporting frame, a middle ring of the ratchet wheel keeps the special-shaped rollers to be inclined at a certain angle, when the inner ring of the bearing rotates clockwise, the special-shaped rollers are pushed against the outer ring of the bearing, the power is larger, the extrusion is tighter, and the outer ring of the bearing is pushed by the special-shaped rollers to drive the belt pulley to rotate clockwise; if the mandrel rotates anticlockwise in the opposite direction, the inclination angle of the special-shaped roller is increased by the inner ring of the bearing, so that the special-shaped roller is separated from the support frame, the power of the inner ring of the bearing is removed, the condition of the special-shaped roller is kept by the elastic support of the middle ring of the ratchet wheel, and the special-shaped roller is reset when the special-shaped roller stops, so that the purpose of one-way transmission of the whole belt pulley is achieved.

Drawings

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

FIG. 2 is a schematic view of the three-dimensional splitting structure of the present invention;

FIG. 3 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 4 is a schematic sectional view taken along line A in FIG. 3;

FIG. 5 is a detail view of the ratchet assembly;

FIG. 6 is a perspective assembly view of the ratchet assembly;

in the figure, the pulley comprises a pulley 1, a belt pulley 11, a key groove 12, a flat key 2, an outer snap spring 3, an outer baffle 4, an inner snap spring 5, an inner baffle 6, a bearing inner ring 7, a bearing outer ring 8, a ratchet assembly 81, an inner ring frame 811, an inner through hole 82, a middle ring frame 821, a middle through hole 822, a raised edge 83, an outer ring frame 831, an outer through hole 84, a special-shaped roller 841, an end thickening section 842 and a middle thin-diameter section.

Detailed Description

The following description of the embodiments of the present invention is provided by way of specific examples.

The utility model discloses a concrete implementation structure comes the detailed description, specifically as follows: a ratchet type one-way belt pulley comprises a bearing inner ring 6, a ratchet assembly 8, a bearing outer ring 7 and a belt pulley 1; the ratchet wheel assembly comprises a supporting frame, wherein a plurality of special-shaped rollers 84 are arranged in the supporting frame, and the special-shaped rollers 84 are obliquely arranged in the supporting frame.

The utility model discloses mainly realize one-way drive control through the inclination that sets up special-shaped roller 84, this embodiment discloses a comparatively novel ratchet assembly 8 structure, and it specifically as follows: the support frame of the ratchet assembly 8 is arranged in multiple layers and comprises an inner ring frame 81, a middle ring frame 82 and an outer ring frame 83; the inner ring frame 81, the middle ring frame 82 and the outer ring frame 83 are all uniformly provided with a plurality of through holes, the special-shaped rollers 84 are obliquely fixed through the through holes, as shown in fig. 4, 5 and 6, the inner ring frame 81, the middle ring frame 82 and the outer ring frame 83 are respectively provided with an inner through hole 811, a middle through hole 821 and an outer through hole 831 corresponding to the fixing holes, the section of the special-shaped roller 84 is as shown in fig. 4 and 5, the special-shaped roller is of a gourd-shaped structure with thick ends and thin middle parts, the end thickened sections 841 and the middle small-diameter section 842 are respectively fixed in the inner through hole 811 and the outer through hole 831, the middle small-diameter section 842 is fixed in the middle through hole 821, and the special-shaped rollers 84 are fixed through the inner ring frame 81, the middle ring frame 82 and the outer ring frame 83 together. Further, in order to make the special-shaped roller 84 always face the driving direction, when it is fixed with the whole supporting frame, it must have a squeezing restraining force to it, the technical solution is realized by the following structure: in the middle ring frame 2, a raised edge 822 is arranged in a middle through hole 821 facing the outer diameter, and the raised edge 822 is used for elastic support after the special-shaped roller 84 swings.

After the structure is arranged, when the utility model is used as a driving wheel for driving, the power shaft realizes that the rotating power drives the bearing inner ring to rotate through the flat key 12, the ratchet wheel component 8 realizes the one-way transmission power, the bearing outer ring 7 is driven to rotate during the positive rotation, the bearing outer ring 7 transmits the rotating power to the belt pulley 1 through the flat key 12, thereby transmitting the rotating kinetic energy of the power shaft to a working machine through a belt; when the inner ring of the bearing rotates reversely, the ratchet wheel component 8 idles to remove the rotational kinetic energy, thereby realizing the purpose of one-way transmission. The outer diameter of the belt pulley can be made into a V shape, and the circular and plane sections are used for being combined with an external belt to realize driving force transmission.

Further, in order to realize the sealing of the inside of the drive, the bearing inner ring 6, the ratchet wheel assembly 8, the bearing outer ring 7 and the belt pulley 1 realize the sealing assembly in the radial direction; in the axial direction, the left side and the right side of the ratchet wheel component 8 are symmetrically fixed through two sets of retaining rings and clamping springs respectively, the assembling relation is shown in figures 2, 3 and 6, the lateral parts of the ratchet wheel component 8 are respectively an outer clamping spring 2, an outer baffle 3, an inner clamping spring 4 and an inner baffle 5 from inside to outside, and the structure can realize integral sealing in the axial direction.

The improved device has the advantages that: 1. the ratchet wheel type one-way belt wheel is simple in structure, the strength of the ratchet wheel component is high, the adaptability is strong, and the design requirements of one-way power transmission and reverse slipping can be quickly met; 2. the structure is simple, no wearing parts are arranged, the strength of the ratchet wheel part is high, the one-way transmission of high power can be met, and the application range is wide; 3. the disassembly is convenient, the threaded connection is avoided, the thread tripping and thread slipping phenomena are avoided, and the hidden danger that the disassembly cannot be carried out due to corrosion of a threaded engagement part is avoided; 4. the unidirectional transmission is flexible, the direction of the unidirectional transmission can be temporarily changed according to the field requirement, and no additional requirement is needed; 5. the snap spring structure oil seal has good performance, no lubricating oil overflows when the snap spring structure oil seal runs at high speed, and no special requirement is required for the oil quality of the lubricating oil.

Claims

1. A ratchet type one-way belt pulley comprises a bearing inner ring, a ratchet assembly, a bearing outer ring and a belt pulley; the method is characterized in that: the ratchet wheel assembly comprises a supporting frame, wherein a plurality of special-shaped rollers are arranged in the supporting frame, and the special-shaped rollers are obliquely arranged in the supporting frame; the support frame of the ratchet wheel assembly is arranged in multiple layers and comprises an inner ring frame, a middle ring frame and an outer ring frame; the inner ring frame, the middle ring frame and the outer ring frame are all provided with a plurality of through holes, and the special-shaped roller is obliquely fixed through the through holes; the special-shaped roller is of a structure with thick two ends and thin middle part, and the outer ring frame, the middle ring frame and the inner ring frame are respectively fixed at the upper, middle and lower parts of the special-shaped roller.

2. The ratcheting one-way pulley of claim 1, wherein: in the center ring frame, be provided with towards the external diameter in its through-hole and stick up the limit, stick up the limit and be used for the elastic support after the special-shaped roller swings.

3. A ratcheting one-way pulley as claimed in claim 1 wherein: the bearing inner ring, the ratchet wheel assembly, the bearing outer ring and the belt pulley are assembled in the radial direction; in the axial direction, the left side and the right side of the ratchet wheel component are clamped and fixed through the retaining ring and the clamp spring respectively.

4. A ratchet-type one-way pulley according to claim 3, wherein: the left side and the right side of the ratchet wheel component are provided with two sets of check rings and clamp springs which are symmetrically arranged on the left side and the right side respectively.