CN216343799U - Pulley capable of rotating flexibly - Google Patents

Abstract

The utility model relates to the technical field of pulley devices, and particularly discloses a pulley capable of rotating flexibly, wherein two side walls of an inner cavity of a wheel carrier are respectively and fixedly connected with a cylindrical sleeve body, two ends of a shaft body are respectively and correspondingly and fixedly sleeved in the center of the cylindrical sleeve body, a bearing is sleeved in the middle of two side surfaces of a wheel disc, the two side surfaces of the wheel disc are respectively provided with a side ring corresponding to the outer edge of the bearing, the side rings are rotatably sleeved with the inner end of the inner cavity of the cylindrical sleeve body, the middle part of the inner side surface of an annular blocking plate is provided with a convex ring which is rotatably sleeved with the outer end of the inner cavity of the side ring, the annular blocking plate is rotatably sleeved with the inner cavity of the cylindrical sleeve body, a spring is arranged between the outer side surface of the annular blocking plate and the inner end surface of the cylindrical sleeve body, the outer end of the cylindrical sleeve body is radially provided with a radial hole, the inner edge of the cylindrical sleeve body is provided with a first axial groove corresponding to the inner side of the radial hole, and the inner edges of the annular blocking plate and the convex ring are provided with second axial grooves; the problem of the rim plate of pulley be difficult to keep nimble pivoted for a long time is solved.

Description

Pulley capable of rotating flexibly

Technical Field

The utility model relates to the technical field of pulley devices, in particular to a pulley capable of flexibly rotating.

Background

The pulley is a small wheel with a groove on the periphery and capable of rotating around a shaft. A simple machine consisting of a grooved disc rotatable about a central axis and a flexible cable (rope, tape, cable, chain, etc.) running over the disc, which can rotate about the central axis, is called a pulley. The pulley commonly used at present generally comprises a wheel carrier, a shaft body, a wheel disc and a bearing, wherein the wheel disc is sleeved on the shaft body through the bearing, and two ends of the shaft body are fixed on the wheel carrier. After the pulley is used for a period of time, the problem that the wheel disc cannot rotate flexibly is caused by the fact that dust enters the bearing or the rotating contact surface is lack of oil and dry.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pulley capable of flexibly rotating, which is used for solving the problem that a wheel disc of the conventional pulley is difficult to keep flexibly rotating for a long time.

In order to achieve the purpose, the utility model provides the following technical scheme: a pulley flexible in rotation comprises a wheel carrier, a shaft body, a wheel disc, a bearing and an annular blocking plate, wherein two side walls of an inner cavity of the wheel carrier are fixedly connected with cylindrical sleeve bodies respectively, two ends of the shaft body are fixedly sleeved at the center of the cylindrical sleeve bodies respectively correspondingly, the bearing is sleeved at the middle parts of two side surfaces of the wheel disc, side rings are arranged at the positions of the two side surfaces of the wheel disc corresponding to the outer edges of the bearing respectively and are rotatably sleeved with the inner ends of the inner cavity of the cylindrical sleeve bodies, a convex ring is arranged at the middle part of the inner side surface of the annular blocking plate and is rotatably sleeved with the outer ends of the inner cavity of the side rings, the annular blocking plate is rotatably sleeved with the inner cavity of the cylindrical sleeve bodies, a spring is arranged between the outer side surface of the annular blocking plate and the inner end surface of the cylindrical sleeve bodies, radial holes are formed in the outer ends of the cylindrical sleeve bodies along the radial direction, a first axial groove is formed in the positions of the inner edges of the cylindrical sleeve bodies corresponding to the radial holes, and second axial grooves are formed in the positions of the annular blocking plate and the inner edge of the convex ring.

Preferably, the middle part of the outer wall of the side ring is provided with an annular groove, and a gasket is sleeved in the annular groove.

Preferably, the outer end of the radial hole is detachably sleeved with a plug.

Preferably, the gasket is made of polytetrafluoroethylene.

Preferably, the plug is sleeved at the outer end of the radial hole in a threaded manner.

Compared with the prior art, the utility model has the beneficial effects that:

the pulley device has better sealing performance, and prevents dust from entering the rotating mechanism; lubricating grease is convenient to inject into the outer side of the bearing through the radial hole, the first axial groove and the second axial groove, and therefore the wheel disc can be guaranteed to rotate flexibly for a long time.

Drawings

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

FIG. 2 is an enlarged schematic view of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic front view of the wheel disc of the present invention;

FIG. 4 is a schematic side view of the cylindrical sleeve of the present invention;

fig. 5 is a schematic perspective view of the annular blocking plate of the present invention.

In the figure: 1-wheel carrier; 2-a shaft body; 3-a wheel disc; 31-side ring; 32-an annular groove; 4-a bearing; 5-cylindrical sleeve body; 51-plug; 52-radial holes; 53-first axial grooves; 6-annular blocking plate; 61-convex ring; 62-a second axial slot; 7-a spring; 8-washer.

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.

Referring to fig. 1-5, the present invention provides a technical solution: a pulley capable of flexibly rotating comprises a wheel carrier 1, a shaft body 2, a wheel disc 3, a bearing 4 and an annular blocking plate 6, wherein two side walls of an inner cavity of the wheel carrier 1 are fixedly connected with a cylindrical sleeve body 5 respectively, two ends of the shaft body 2 are fixedly sleeved at the center of the cylindrical sleeve body 5 respectively correspondingly, the bearing 4 is sleeved in the middle of two side surfaces of the wheel disc 3, side rings 31 are arranged at positions of the two side surfaces of the wheel disc 3 corresponding to the outer edge of the bearing 4 respectively, the side rings 31 are rotatably sleeved with the inner end of the inner cavity of the cylindrical sleeve body 5, a convex ring 61 is arranged at the middle of the inner side surface of the annular blocking plate 6, the convex ring 61 is rotatably sleeved with the outer end of the inner cavity of the side ring 31, the annular blocking plate 6 is rotatably sleeved with the inner cavity of the cylindrical sleeve body 5, a spring 7 is arranged between the outer side surface of the annular blocking plate 6 and the inner end surface of the cylindrical sleeve body 5, a radial hole 52 is arranged at the outer end of the cylindrical sleeve body 5 along the radial direction, a first axial groove 53 is arranged at a position corresponding to the inner side of the radial hole 52, the annular blocking plate 6 and the inner edge of the convex ring 61 are provided with a second axial groove 62.

In this embodiment, the middle of the outer wall of the side ring 31 is provided with an annular groove 32, and the gasket 8 is sleeved in the annular groove 32.

In this embodiment, the outer end of the radial hole 52 is detachably sleeved with a plug 51.

In this embodiment, the gasket 8 is made of teflon.

In this embodiment, the plug 51 is screwed on the outer end of the radial hole 52.

In conclusion, the plug 51 is taken out, so that lubricating grease can be conveniently injected into the radial hole 52, and the lubricating grease enters the inner cavity of the side ring 31 at the outer side position of the bearing through the first axial groove 53 and the second axial groove 62, so that the bearing can flexibly rotate for a long time; through the cup joint relation of the cylindrical sleeve body 5 and the side ring 31, the gasket 8 is additionally arranged, and meanwhile, the spring 7 pushes the annular blocking plate 6 towards the side ring 31, so that the bearing can work in a relatively sealed environment, and the problem that the rolling of balls is not smooth due to the fact that dust enters the bearing is avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (5)

1. The utility model provides a rotate nimble pulley, includes wheel carrier (1), axis body (2), rim plate (3) and bearing (4), its characterized in that: the wheel carrier is characterized by further comprising an annular blocking plate (6), two side walls of an inner cavity of the wheel carrier (1) are fixedly connected with a cylindrical sleeve body (5) respectively, two ends of the shaft body (2) are respectively and fixedly sleeved at the center of the cylindrical sleeve body (5), the bearing (4) is sleeved in the middle of two side faces of the wheel disc (3), two side faces of the wheel disc (3) are respectively provided with a side ring (31) corresponding to the position of the outer edge of the bearing (4), the side ring (31) is rotatably sleeved with the inner end of the inner cavity of the cylindrical sleeve body (5), the middle of the inner side face of the annular blocking plate (6) is provided with a convex ring (61), the convex ring (61) is rotatably sleeved with the outer end of the inner cavity of the side ring (31), the annular blocking plate (6) is rotatably sleeved with the inner cavity of the cylindrical sleeve body (5), and a spring (7) is arranged between the outer side face of the annular blocking plate (6) and the inner end face of the cylindrical sleeve body (5), the outer end of the cylindrical sleeve body (5) is radially provided with a radial hole (52), the inner edge of the cylindrical sleeve body (5) is provided with a first axial groove (53) at a position corresponding to the inner side of the inner end of the radial hole (52), and the annular blocking plate (6) and the inner edge of the convex ring (61) are provided with a second axial groove (62).

2. A rotationally flexible sheave as in claim 1 wherein: an annular groove (32) is formed in the middle of the outer wall of the side ring (31), and a gasket (8) is sleeved in the annular groove (32).

3. A rotationally flexible sheave as in claim 1 wherein: the outer end of the radial hole (52) is detachably sleeved with a plug (51).

4. A rotationally flexible sheave as in claim 2 wherein: the gasket (8) is made of polytetrafluoroethylene.

5. A rotationally flexible sheave as in claim 3 wherein: the plug (51) is sleeved at the outer end of the radial hole (52) in a threaded manner.

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