CN212202867U

CN212202867U - Roller bearing assembly for elevator

Info

Publication number: CN212202867U
Application number: CN202020410367.1U
Authority: CN
Inventors: 洪斌
Original assignee: Wenzhou Renben Motor Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Wenzhou Renben Motor Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-12-22
Anticipated expiration: 2030-03-26

Abstract

The utility model provides a roller bearing assembly for an elevator, which belongs to the field of elevator accessories and comprises a roller body, a mandrel, a dustproof end cover and two bearings, wherein the roller body is of a through hole structure and is provided with two openings, the two bearings are sleeved on the mandrel side by side, the roller body is sleeved on the two bearings, and the bearings are sealing bearings; the sealed bearing is sealed by adopting an RSH (high contact rubber cover seal) structure, and/or the inside of the bearing is filled with high-viscosity grease with 35% -45% of effective space. The utility model discloses to the sealing performance of bearing itself, combine the seal structure optimization of jump ring, sealing member, improved gyro wheel bearing assembly's anti shake, sealing performance, be fit for many dusts, vibrations and feel comparatively strong building construction occasion and use.

Description

Roller bearing assembly for elevator

Technical Field

The invention relates to the field of elevator accessories, in particular to a roller bearing assembly.

Background

The lifter is widely applied to building construction occasions for up-and-down transmission, and can greatly reduce the labor intensity of workers. Because a large amount of dust and a large amount of water are often used in building construction, the environment is severe, and the operation process of the elevator generally has large shaking and unbalance loading, so that under the combined action of the environment and poor operation, the conventional roller bearing assembly has short service life, is often failed in advance, needs to be replaced frequently, not only improves the economic cost, but also causes certain inconvenience for actual construction, and seriously affects the construction period.

Based on this, the present application is proposed.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the roller bearing assembly for the elevator, which improves the sealing performance, solves the problem of short service life of the conventional roller bearing assembly and meets the requirements of the service condition on the building elevator.

In order to achieve the above object, the utility model discloses a roller bearing assembly for elevator's technical scheme as follows: the roller comprises a roller body, a mandrel, a dustproof end cover and two bearings, wherein the roller body is of a through hole structure and is provided with two openings, the two bearings are sleeved at the end part of the mandrel side by side, the roller body is sleeved on the two bearings, the dustproof end cover is fixedly arranged right opposite to the end surface of the mandrel and covers the mandrel and the roller body together, and the bearings are all sealed bearings; the sealed bearing is sealed by adopting an RSH (high contact rubber cover seal) structure, and/or the inside of the bearing is filled with high-viscosity grease with 35% -45% of effective space.

The structure can avoid the foreign matters entering the roller body in the use environment from entering the bearing to influence the normal work of the bearing by improving the sealing effect of the bearing, thereby improving the sealing effect of the roller bearing assembly and prolonging the service life of the roller assembly. And 35% -45% of the high-viscosity grease in the effective space is filled in the bearing, under the filling, when the bearing is shaken, the high-viscosity grease is not easy to vibrate in the bearing, and the shake borne by the bearing can be reduced through the material characteristics of the bearing, so that the influence of the shake on the internal structure of the bearing is greatly reduced, the bearing can be suitable for mechanical equipment with strong vibration sense, and the bearing is simple in structure and convenient to realize.

The utility model discloses further set up as follows: the structure is matched with the outer side opening of the rolling body which is reduced at the lower section, and the outer ring and the inner ring of the bearing are respectively limited and fixed from two points, so that the friction and fixing effects are good.

The utility model discloses further set up as follows: the opening near the end part of the mandrel is smaller than the diameter of the through hole, so that the outward side of the outer ring of a bearing is abutted against the inner wall of the through hole of the roller body; a clamping groove is arranged near the other opening, and a clamping spring is arranged in the clamping groove and is abutted against the outward side of the other bearing; and a sealing element is arranged between the roller body and the mandrel to seal the bearing and the clamp spring.

In the structure, the clamp spring is used for being matched with a small opening to limit the two bearings in the rolling body, and meanwhile, the elasticity of the clamp spring is utilized to reduce the vibration of the bearings when the roller bearing assembly is influenced to shake, so that the roller bearing assembly can further adapt to a shaking environment. In addition, through the cooperation of the clamp spring and the smaller caliber, parts in the roller bearing assembly can be reduced, so that the structure is optimized, the stability of the structure is provided, and the bearing is not easy to deform to cause bearing failure even if the roller bearing assembly is in shaking.

The sealing element mainly has the effects of preventing external dust and water vapor from entering the inside of the roller bearing assembly and preventing the dust, the water vapor and the like from influencing internal parts, so that the good running environment of the roller is ensured, and the service life of the roller bearing assembly is prolonged.

The sealing element between the roller body and the mandrel is a second sealing measure and is matched with the sealing bearing, and the possibility of foreign matters entering the bearing is greatly reduced through the two sealing measures.

For further sealing performance between the gyro wheel body and the dabber that improves, the utility model discloses further set up as follows: the sealing element is a lip-shaped sealing ring.

The utility model discloses further set up as follows: the spindle is sleeved with a shaft sleeve, and the shaft sleeve is positioned between the two bearings. The bearings are separated by the shaft sleeves, so that the bearing can better bear bending moment and prolong the service life of the bearing.

The utility model discloses further set up as follows: the mandrel is in threaded connection with the end cover, so that the assembly is convenient, the fixing protrusions are also convenient to abut against the inner ring of the bearing, the bearing is limited, the inner ring of the bearing is prevented from randomly moving on the bearing, and the overall operation performance of the roller bearing assembly is prevented from being influenced.

The utility model discloses further set up as follows: a gap of 0.4-0.8mm is reserved between the end cover and the roller, so that normal operation is guaranteed, and a certain sealing effect is achieved.

The utility model discloses further set up as follows: the clearance of the bearing is 1-3 um larger than that of a common bearing. The angular play of the bearing is correspondingly increased, and the requirements of the bearing on the occasions of non-concentricity and vibration are met.

The invention has the following beneficial effects: the utility model discloses combine jump ring, sealing member to the fixed of bearing, seal structure to optimize to this anti trembling, the sealing performance that have improved the gyro wheel bearing subassembly, and then further adapt to many dusts, the vibrations feels comparatively strong building construction occasion and use, prolong the life of gyro wheel bearing subassembly in the building lift. Adopt the above technical scheme of the utility model, improve that the effect is obvious, the feasibility is strong, through experimental verification, discovery gyro wheel bearing assembly's life can increase 1 doubly at least.

Drawings

Fig. 1 is a sectional view showing the overall structure of an embodiment of the present invention.

Reference numerals: 100-rolling body, 200-clamp spring, 300-sealing element, 400-mandrel, 500-first bearing, 600-shaft sleeve, 700-second bearing and 800-end cover; 810-bulge, 820-shoulder.

Detailed Description

Example 1

As shown in fig. 1, the present embodiment provides a roller bearing assembly for an elevator, which includes a roller body 100, a mandrel 400, a dust-proof end cover 800, a first bearing 500, and a second bearing 700, wherein the roller is a cylinder whose outer surface is processed with a corresponding curved surface to connect with a slide rail on the elevator, a through hole for connection and installation is provided at an axial center of the roller body, and a left opening and a right opening are respectively formed on a left side surface and a right side surface of the roller body 100.

In order to improve the sealing performance of the bearing itself, the first bearing 500 and the second bearing 700 are both used as 62/28 high-reliability sealing bearings, and the sealing structure preferably adopts an RSH (high contact rubber cover sealing) structure.

In addition, the bearing can be filled with high-viscosity grease with 35% -45% of effective space, such as MLKDS-580 wide-temperature damping grease, and can be further preferably sealed by adopting a 2RSH structure.

Example 2

The present embodiment further provides, on the basis of embodiment 1: the through hole is a diameter-variable hole and is narrowed in diameter on the left side of the roller body 100 (in this embodiment, the description of "left" and "right" is referred to in fig. 1) such that the diameter of the left opening is smaller than the diameter of the right opening.

Mandrel 400 is a three-piece structure as shown, with the diameter increasing from its left-hand end to its right-hand end, so that two shoulders are formed on mandrel 400 to facilitate installation.

The first bearing 500 and the second bearing 700 have the same structure, the first bearing 500 and the second bearing 700 are mounted in parallel at a middle section between a first shoulder (on the left side in the figure) and a second shoulder (on the right side in the figure) of the spindle 400, and the right end face of the inner ring of the first bearing 500 needs to abut against the step face of the second shoulder of the spindle 400. The diameter of the through hole of the roller body 100 is adapted to the diameters of the first bearing 500 and the second bearing 700, and the through hole is sleeved outside the first bearing 500 and the second bearing 700 to wrap the two. Meanwhile, a clamping groove is formed in the side wall of the through hole of the roller body 100 and close to the right opening, the left side of the clamping groove is aligned with the step surface of the second shaft shoulder, and the clamping spring 200 is embedded in the clamping groove and used for limiting the axial movement of the outer ring of the second bearing 700. On the right side of the circlip 200, a sealing groove is arranged on the side wall of the through hole of the roller body 100 near the right opening, a sealing member 300 is embedded in the sealing groove, and the sealing member 300 is used for sealing the gap between the right opening of the roller body 100 and the mandrel 400, so that dust and water are prevented from entering the inside of the assembly from the opening.

In addition to the sealing between the right opening of the roller body 100 and the mandrel 400, a corresponding dustproof design is also required between the left opening of the roller body 100 and the mandrel 400, and is realized by using the end cover 800. The left end of the mandrel 400 is provided with an external thread, the end cover 800 comprises a body and a protrusion 810 which is perpendicular to the right side of the body, the protrusion 810 is preferably in a ring shape which is suitable for an actual result, a threaded hole is formed in the middle of the body, one side with the protrusion 810 is right opposite to the left end of the mandrel 400 during installation, then the side with the protrusion 810 is connected to the left end of the mandrel 400 through the threaded hole in the end cover 800 in a threaded mode, and when the right side of the mandrel 400 abuts against the first shaft shoulder of the mandrel 400, the threaded hole is formed in the middle of the body. In this structure, a small gap, preferably 0.4-0.8mm, is provided between the end cover 800 and the roller body 100 to prevent friction from being generated between the end cover 800 and the roller body 100 due to collision. The projection 810 also abuts against the inner race of the second bearing 700, fixing the position of the second bearing 700.

In order to ensure that a gap exists between the end cover 800 and the roller body 100 and a certain dustproof effect can be achieved, a blocking shoulder 820 is designed on the end cover 800 to be in clearance fit with the roller body 100, and foreign matters entering the roller body can be greatly reduced through the bending structure of the blocking shoulder 820.

Example 3

The present embodiment differs from the above embodiments in that: in another embodiment, the first bearing 500 and the second bearing 700 may be separated by a bushing 600, and the first bearing 500 and the second bearing 700 may be spaced apart by a certain distance (preferably, 5mm to 10 mm), so as to improve the balance and the bending moment resistance of the roller bearing assembly.

Example 4

The present embodiment differs from the above embodiments in that: the clearance of the bearing of the embodiment is 1-3 um larger than that of a common bearing.

Example 5

The present embodiment is different from embodiment 1 in that: in this embodiment, a retainer ring is disposed in the groove of the roller body 100 to limit the axial movement of the outer ring of the first bearing 500, without using the snap spring 200. The roller bearing assembly has improved sealing performance to improve its applicability in building construction.

Claims

1. The utility model provides a gyro wheel bearing subassembly for lift, includes the gyro wheel body, dabber, dust cover and two bearings, the gyro wheel body is the through-hole structure and has two openings, and two bearings cup joint in the tip of dabber side by side, and the dust cover is just to the terminal surface fixed mounting of dabber and covers dabber and gyro wheel body's part in the lump, and the gyro wheel body cup joints on two bearings, its characterized in that: the bearings are all sealed bearings; the sealed bearing is sealed by adopting an RSH structure, and/or the inside of the bearing is filled with high-viscosity grease with 35% -45% of effective space.

2. The roller bearing assembly for an elevator of claim 1, wherein: the side surface of the end cover opposite to the mandrel is provided with a bulge, and the bulge extends to the bearing and is in clearance fit with the bearing.

3. The roller bearing assembly for an elevator of claim 2, wherein: the opening near the end part of the mandrel is smaller than the diameter of the through hole, so that the outward side of the outer ring of a bearing is abutted against the inner wall of the through hole of the roller body; a clamping groove is arranged near the other opening, and a clamping spring is arranged in the clamping groove and is abutted against the outward side of the other bearing; and a sealing element is arranged between the roller body and the mandrel to seal the bearing and the clamp spring.

4. The roller bearing assembly for an elevator of claim 3, wherein: the sealing element is a lip-shaped sealing ring.

5. The roller bearing assembly for an elevator of claim 1, wherein: the spindle is sleeved with a shaft sleeve, and the shaft sleeve is positioned between the two bearings.

6. The roller bearing assembly for an elevator according to claim 1 or 5, wherein: the mandrel is in threaded connection with the end cover.

7. The roller bearing assembly for an elevator of claim 1, wherein: a gap of 0.4-0.8mm is reserved between the end cover and the roller body.

8. The roller bearing assembly for an elevator according to any one of claims 1 to 3, wherein: the clearance of the bearing is 1-3 um larger than that of a common bearing.