CN212202842U - Sealing pulley - Google Patents

Abstract

The utility model relates to a bearing seal field of pulley specifically discloses a sealed pulley, including the pulley body, the cover is established at the epaxial bearing of pulley, seal assembly and dirt scraping plate, the bearing inlays the dress at the pulley internally, seal assembly sets up at the pulley body, bearing and pulley shaft three's juncture, seal assembly is by moving sealed lid, the food tray comprises quiet sealed lid, it is fixed continuous with the pulley body to move sealed lid, the inboard bearing that links to each other is fixed sealed to quiet, the food tray sets up and is moving sealed between lid and the quiet sealed lid, the food tray, move sealed lid and quiet sealed cavity between the lid and be full of sealed grease, quiet sealed lateral surface of covering is fixed with the dirt scraping plate. The utility model discloses an adopt the food tray, quiet sealed lid and move the cavity between the sealed lid and be full of sealed grease, quiet sealed lid is add the way of scraping dirty board, has solved bearing seal, waterproof and both sides filth of pulley strike off the problem, simple structure, safe and reliable is worth wideling popularize.

Description

Sealing pulley

Technical Field

The utility model relates to a bearing seal field of pulley especially relates to a sealed pulley.

Background

The existing pulleys are usually singly connected, doubly connected and multiply connected for use side by side, if dust, oil stain or moisture in the environment are large, dirt enters a bearing cavity to pollute a bearing, the two sides of the pulleys also have the dirt to be accumulated, and when the pulleys are doubly connected and multiply connected for use side by side, a large amount of dirt can be accumulated between the two pulleys, the time is prolonged, the bearing can be fully filled, so that the opportunity that the dirt or water and the like enter the bearing cavity is increased, the bearing is polluted, and the service life of the pulleys is greatly influenced. The conventional solutions are labyrinth seals, gasket seals or other combined seals, but they have more or less their own limitations, so that a new type of sealing pulley needs to be designed to solve or improve these problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bearing seal, waterproof and both sides filth of pulley strike off the problem has been solved, the effectual bearing seal, waterproof and both sides filth strike off and the phenomenon of piling up of filth that has improved.

In order to realize the above-mentioned purpose, the utility model provides a sealed pulley, establish bearing, seal assembly and the dirty board of scraping on the pulley shaft including the pulley body, cover, the bearing inlays the dress and is in the pulley body, seal assembly sets up pulley body, bearing and pulley shaft three's juncture, seal assembly comprises movable sealing lid, food tray and quiet sealed lid, movable sealing lid with the pulley body is fixed to link to each other, quiet sealed inboard with the bearing is fixed to link to each other, the food tray sets up movable sealing lid with between the quiet sealed lid, the food tray move sealed lid and be full of sealed grease in the cavity between the quiet sealed lid, quiet sealed lateral surface of covering is fixed with scrape the dirty board.

Furthermore, an annular retaining shoulder is arranged on the inner side of the static sealing cover, and the static sealing cover and the annular retaining shoulder are integrally formed.

Specifically, the oil baffle disc is arranged between the annular baffle shoulder and the movable sealing cover in a suspending mode.

Further, the outer side surface of the static sealing cover is provided with an inclined surface.

Further, the contact surface of the dirt scraping plate and the static sealing cover is an inclined surface.

Furthermore, two sides of the dirt scraping plate are provided with inclined planes.

Compared with the prior art, the beneficial effects of the utility model are that: the sealing pulley effectively solves the problems of sealing, water proofing and scraping of dirt on two sides of the bearing in the using process of the pulley, and can also effectively solve the problem of accumulation of dirt in the interval between the two pulleys when a duplex or multi-connected pulley block is used.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of a side view of the present invention;

fig. 2 is a partially enlarged schematic view of fig. 1 according to the present invention;

FIG. 3 is a schematic structural view of the dirt scraping plate and the pulley body of the present invention;

fig. 4 is a schematic view of the duplex pulley block of the present invention;

fig. 5 is a schematic view of the triple pulley block of the present invention.

In the figure: the bearing comprises a pulley body 1, a bearing 2, a movable sealing cover 3, an oil baffle disc 4, a movable sealing cover 5, a dirt scraping plate 6, sealing grease 7, an annular retaining shoulder 8, a pulley shaft 9 and a sealing assembly 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-3, the utility model discloses a sealed pulley, including the pulley body 1, the cover is established at the epaxial bearing 2 of pulley, seal assembly 10 and scrape dirty board 6, bearing 2 inlays the dress in the pulley body 1, seal assembly 10 sets up at the pulley body 1, bearing 2 and pulley shaft 9 three's juncture, seal assembly 10 is by moving sealed lid 3, oil baffle disc 4 and quiet sealed lid 5 are constituteed, it is fixed continuous with the pulley body 1 to move sealed lid 3, 5 inboards of quiet sealed lid link to each other with bearing 2, 5 inboards of quiet sealed lid are equipped with integrated into one piece's annular fender shoulder 8, oil baffle disc 4 suspension sets up between annular fender shoulder 8 and the sealed lid 3 of moving, oil baffle disc 4, be full of sealed grease 7 in the cavity between 3 of the sealed lid of moving and the sealed lid 5 of quiet sealed, 5 lateral surfaces of quiet sealed lid are fixed with scrape.

The specific process requirements of the utility model are as follows: when the pulley body 1 rotates, the movable sealing cover 3 is driven to rotate, the oil baffle disc 4 makes floating centrifugal motion around the static sealing cover 5, hard friction with a component moving relative to the oil baffle disc is avoided, and meanwhile, the oil baffle disc 4 floats on the outer side of the sealing grease 7, so that grease can be prevented from leaking, dirt can be effectively prevented from entering and adhering to the sealing grease 7, and further entering a cavity of the bearing 2 to pollute the bearing 2; the oil baffle disc 4 is suspended between the dynamic sealing cover 3 and the static sealing cover 5 and is provided with an axial baffle shoulder 8 for preventing the oil baffle disc 4 from moving rightwards and damaging or reducing the space of the sealing grease 7; when the pulley body 1 rotates to drive the movable sealing cover 3 to rotate and rotate relative to the dirt scraping plate 6 fixed on the static sealing cover 5, dirt adhered to the movable sealing cover 3 is continuously scraped and falls off at the inclined plane of the dirt scraping plate 6, so that the dirt is prevented from staying on the surface, the chance that the dirt enters the cavity of the bearing 2 is reduced, and meanwhile, the dirt falls off due to the inclined planes at the two sides of the dirt scraping plate 6 and the self weight of the dirt and is not accumulated on the pulley body 1; because the cavity between the movable sealing cover 3 and the oil baffle disc 4 is filled with the sealing grease 7, the water can be prevented from entering, the bearing 2 is prevented from being rusted, and a good waterproof function is realized. When the pulleys are used in a duplex or multi-link mode, although the intervals of the pulleys are small, dirt is scraped by the dirt scraping plate 6 in time and falls off, so that the accumulation or the blockage of the dirt can be greatly reduced. The use of double or multiple is illustrated in fig. 4-5.

Example 2

Fig. 4 is a schematic diagram of a double pulley block in the embodiment 2, in which two sealing pulleys are abutted against each other to form a group of double pulley blocks, and the structure of a single sealing pulley in the embodiment is the same as that in the embodiment 1.

Example 3

Fig. 5 is a schematic diagram of a triple pulley block of the embodiment 3, in which three sealing pulleys are abutted against each other to form a triple pulley block group, and the structure of a single sealing pulley in the embodiment is the same as that in the embodiment 1.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A sealed pulley, characterized by: the pulley comprises a pulley body (1), a bearing (2) sleeved on a pulley shaft (9), a sealing assembly (10) and a dirt scraping plate (6), wherein the bearing (2) is embedded in the pulley body (1), the sealing assembly (10) is arranged at the junction of the pulley body (1), the bearing (2) and the pulley shaft (9), the sealing assembly (10) comprises a movable sealing cover (3), an oil baffle disc (4) and a static sealing cover (5), the movable sealing cover (3) is fixedly connected with the pulley body (1), the inner side of the static sealing cover (5) is fixedly connected with the bearing (2), the oil baffle disc (4) is arranged between the movable sealing cover (3) and the static sealing cover (5), the oil baffle disc (4), the movable sealing cover (3) and the cavity between the static sealing covers (5) are filled with sealing grease (7), the outer side surface of the static sealing cover (5) is fixed with the dirt scraping plate (6).

2. Sealed pulley according to claim 1, characterized in that the static sealing cover (5) is provided with an annular shoulder (8) inside, and the static sealing cover (5) is integrally formed with the annular shoulder (8).

3. A sealed pulley according to claim 2, characterized in that the windage tray (4) is arranged suspended between the annular shoulder (8) and the dynamic sealing cover (3).

4. A sealed pulley according to claim 1, characterized in that the outer side of the static sealing cover (5) is provided as a bevel.

5. A sealed pulley according to claim 1, characterized in that the contact surface of the dirt scraping plate (6) with the static sealing cover (5) is provided as an inclined surface.

6. A sealed pulley according to claim 5, characterized in that the two sides of the dirt-scraping plate (6) are bevelled.

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