CN220286228U

CN220286228U - Dustproof cylindrical roller bearing

Info

Publication number: CN220286228U
Application number: CN202322080037.7U
Authority: CN
Inventors: 刘忠宝; 宋元君; 刘长彬; 冷贵春; 张齐斌
Original assignee: Wafangdian Tiema Locomotive Bearing Manufacturing Co ltd
Current assignee: Wafangdian Tiema Locomotive Bearing Manufacturing Co ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-01-02
Anticipated expiration: 2033-08-04

Abstract

The utility model discloses a dustproof cylindrical roller bearing, which belongs to the technical field of bearings and comprises an inner shaft, wherein an installation frame is sleeved outside the inner shaft, an installation strip is arranged at the lower end of the installation frame, a plurality of groups of rollers are arranged outside the installation frame, an outer shaft is sleeved at the outer end of the installation frame, when the dustproof cylindrical roller bearing is used, the dustproof cylindrical roller bearing is fixed through a limit ring after being installed between the inner shaft and the outer shaft, the inner diameters of the two groups of dustproof sleeves are smaller than the outer diameters of the inner shaft, the outer diameters of the two groups of dustproof sleeves are larger than the inner diameters of the outer shaft, dust, dirt and other particles can be effectively reduced from entering the bearing, the phenomenon that friction of the bearing is increased and abrasion is aggravated due to impurities can be reduced, and the service life of the bearing is prolonged.

Description

Dustproof cylindrical roller bearing

Technical Field

The utility model belongs to the technical field of bearings, and particularly relates to a dustproof cylindrical roller bearing.

Background

Cylindrical roller bearings are a common bearing type, which consists of an inner ring, an outer ring, rolling bodies (cylindrical rollers), retainers and seals. The cylindrical roller bearing can bear a large radial load and has a relatively high rigidity, and the rolling bodies of the cylindrical roller bearing are cylindrical in shape as compared with other types of bearings, so that the contact area thereof is relatively large, and can share a larger load. This makes cylindrical roller bearings very common in large machinery, heavy vehicles, industrial machinery and other applications.

The existing bearing structure is simple and convenient, dust, particles or other pollutants possibly enter the bearing directly due to lack of dustproof measures, the particles can increase friction and abrasion, the performance and service life of the bearing are reduced, no effective dustproof protection exists, and the bearing lubricant is easy to be polluted by external pollutants. Contaminated lubricant may lose its lubricating properties, leading to premature failure of the bearing, and thus damage to the rollers, and replacement is cumbersome.

Disclosure of Invention

In order to overcome the defects, the utility model provides a dustproof cylindrical roller bearing which solves the problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel roller type roller bearing comprises an inner shaft, wherein an installation frame is sleeved on the outer side of the inner shaft, an installation strip is arranged at the lower end of the installation frame, a plurality of groups of rollers are arranged on the outer side of the installation frame, and an outer shaft is sleeved on the outer end of the installation frame.

As a further aspect of the utility model: the outer surface of the inner shaft and the inner surface of the outer shaft are provided with grooves, the grooves are internally provided with cushion pads, and the cushion pads are made of rubber materials.

As a further aspect of the utility model: the outer sides of the mounting frames are provided with a plurality of groups of groove positions, and the shape of the groove positions is the same as that of the roller.

As a further aspect of the utility model: the mounting rack is characterized in that the lower end of the mounting rack is provided with mounting bolts, the middle positions of the lower surfaces of the mounting bars are provided with positioning grooves matched with the mounting bolts, and the middle of the mounting bolts is provided with cross-shaped hole sites.

As a further aspect of the utility model: two groups of dustproof sleeves are arranged at the positions, close to the outer shaft, of the inner shaft, and are made of polytetrafluoroethylene materials.

As a further aspect of the utility model: limiting rings are arranged on the inner side and the outer side of the two groups of dustproof sleeves, and limiting grooves matched with the limiting rings are formed in the outer surface of the inner shaft and the inner surface of the outer shaft.

As a further aspect of the utility model: the inner diameter of the dustproof sleeve is smaller than the outer diameter of the inner shaft, and the outer diameter of the dustproof sleeve is larger than the inner diameter of the outer shaft.

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

1. this dustproof cylindrical roller bearing through setting up the dirt proof boot, when using, through installing the dirt proof boot between interior axle and outer axle, then fix through the spacing collar, through two sets of dirt proof boot inside diameter sizes being less than interior axle outside diameter sizes, two sets of dirt proof boot outside diameter sizes are greater than the inside diameter sizes of outer axle and can effectively reduce dust, dirt and other particulate matters entering bearing inside, can reduce impurity and probably can lead to bearing friction increase, wearing and tearing aggravated phenomenon, extension bearing's life-span.

2. This dustproof cylindrical roller bearing through being provided with the mounting bracket, when using, can be through demolising the mounting bracket, then through pressing the installation bolt for the installation bolt inwards contracts, thereby can take out the installation bolt in the constant head tank of seting up from the installation strip lower extreme, and then can separate mounting bracket and installation strip, thereby be convenient for change cylindrical roller bearing's roller.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic cross-sectional exploded view of the present utility model;

FIG. 4 is a schematic view of a partially cut-away disassembled structure of the present utility model;

in the figure: 1. an inner shaft; 2. a mounting frame; 3. a mounting bar; 4. a mounting bolt; 5. a roller; 6. an outer shaft; 7. a cushion pad; 8. a dust cover.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

As shown in fig. 1-4, the present utility model provides a technical solution: including interior axle 1, interior axle 1 outside cover is equipped with mounting bracket 2, mounting bracket 2 lower extreme is provided with mounting bar 3, the mounting bracket 2 outside is provided with multiunit roller 5, mounting bracket 2 outer pot head is equipped with outer axle 6

Further, the groove positions are formed in the outer surface of the inner shaft 1 and the inner surface of the outer shaft 6, the buffer pads 7 are arranged in the groove positions, the buffer pads 7 are made of rubber materials, and vibration and noise of the bearing during high-speed rotation can be reduced through the buffer pads 7, so that stability and comfort of the bearing are improved.

Further, the outer sides of the mounting frames 2 are provided with a plurality of groups of groove positions, and the shape of the groove positions is the same as that of the rollers 5, so that the rollers 5 can be conveniently mounted in the mounting frames 2, and the rollers 5 are prevented from deviating.

Further, the mounting bracket 2 lower extreme all is provided with the mounting bolt 4, and the constant head tank that matches with it has all been seted up to mounting bar 3 lower surface intermediate position to set up the cross hole site in the middle of the mounting bolt 4, can be with mounting bar 3 fixed mounting in mounting bracket 2 upper end of mounting bar 4 that mounting bracket 2 lower extreme set up, then through pressing the mounting bolt 4 for the mounting bolt 4 inwards contracts, thereby can take out mounting bolt 4 from the constant head tank that mounting bar 3 lower extreme was seted up in, and then can separate mounting bracket 2 and mounting bar 3.

Further, the positions of the inner shaft 1 and the outer shaft 6, which are close to each other, are provided with two groups of dust-proof sleeves 8, the two groups of dust-proof sleeves 8 are made of polytetrafluoroethylene materials, external dust, moisture and other pollutants can be prevented from entering the bearing through the dust-proof sleeves 8, the service life and reliability of the bearing are improved, and Polytetrafluoroethylene (PTFE) has excellent corrosion resistance and low friction coefficient under a high-temperature environment, so that the bearing is sealed under the condition that the bearing rotating speed is less influenced.

Furthermore, both the inner side and the outer side of the two groups of dustproof sleeves 8 are provided with limiting rings, the outer surface of the inner shaft 1 and the inner surface of the outer shaft 6 are provided with limiting grooves matched with the limiting rings, and the dustproof sleeves 8 can be fixedly arranged between the inner shaft 1 and the outer shaft 6 through the limiting rings.

Further, the inner diameter of the dustproof sleeves 8 is smaller than the outer diameter of the inner shaft 1, and the outer diameter of the dustproof sleeves 8 is larger than the inner diameter of the outer shaft 6, so that the dustproof sleeves 8 can be reinforced to be fixed between the inner shaft 1 and the outer shaft 6.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of one of ordinary skill in the art.

Claims

1. A dustproof cylindrical roller bearing comprising an inner shaft (1), characterized in that: the novel roller type inner shaft is characterized in that an installation frame (2) is sleeved outside the inner shaft (1), an installation strip (3) is arranged at the lower end of the installation frame (2), a plurality of groups of rollers (5) are arranged outside the installation frame (2), and an outer shaft (6) is sleeved outside the installation frame (2).

2. A dust protected cylindrical roller bearing according to claim 1, characterized in that: the outer surface of the inner shaft (1) and the inner surface of the outer shaft (6) are provided with groove positions, cushion pads (7) are arranged in the groove positions, and the cushion pads (7) are made of rubber materials.

3. A dust protected cylindrical roller bearing according to claim 1, characterized in that: the outer sides of the mounting frames (2) are provided with a plurality of groups of groove positions, and the shape of the groove positions is the same as that of the roller (5).

4. A dust protected cylindrical roller bearing according to claim 1, characterized in that: the mounting rack is characterized in that mounting bolts (4) are arranged at the lower ends of the mounting racks (2), positioning grooves matched with the mounting bolts are formed in the middle positions of the lower surfaces of the mounting strips (3), and cross-shaped hole sites are formed in the middle of the mounting bolts (4).

5. A dust protected cylindrical roller bearing according to claim 1, characterized in that: two groups of dustproof sleeves (8) are arranged at positions, close to the inner shaft (1) and the outer shaft (6), of the dustproof sleeves (8) and are made of polytetrafluoroethylene materials.

6. A dust protected cylindrical roller bearing according to claim 5, wherein: limiting rings are arranged on the inner side and the outer side of the two groups of dustproof sleeves (8), and limiting grooves matched with the outer surface of the inner shaft (1) and the inner surface of the outer shaft (6) are formed in the outer surface of the inner shaft.

7. A dust protected cylindrical roller bearing according to claim 5, wherein: the inner side diameter of the two groups of dustproof sleeves (8) is smaller than the outer side diameter of the inner shaft (1), and the outer side diameter of the two groups of dustproof sleeves (8) is larger than the inner side diameter of the outer shaft (6).