CN212672239U

CN212672239U - High-wear-resistance bearing inner ring

Info

Publication number: CN212672239U
Application number: CN202021436785.4U
Authority: CN
Inventors: 李立春
Original assignee: Xinchang County Jingling Town Shengtai Bearing Parts Factory
Current assignee: Xinchang County Jingling Town Shengtai Bearing Parts Factory
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-03-09
Anticipated expiration: 2030-07-20

Abstract

The utility model belongs to the technical field of the bearing accessory, especially, relate to a high abrasion bearing inner circle, including the inner circle body, set up the gliding channel of round confession ball on the inner circle body lateral wall, its characterized in that: the utility model discloses a wear-resisting groove, including channel wall, mounting groove, wearing pad, the channel wall is last to be provided with the one deck carburization layer, there is the radial inward mounting groove in the middle part of the channel, be provided with the wearing pad in the mounting groove, the lateral wall of wearing pad with the channel wall is on same cambered surface. Because the middle part of channel is inseparable with the ball contact, and here wearing and tearing are also the biggest, to this the utility model discloses the mounting groove has still been seted up at the middle part of channel to set up the abrasion pad in the mounting groove, through the abrasion resistance of abrasion pad in order to further improve the channel, and then the life of extension bearing inner circle.

Description

High-wear-resistance bearing inner ring

Technical Field

The utility model belongs to the technical field of the bearing accessory, especially, relate to a high abrasion bearing inner race.

Background

The bearing is generally composed of an inner ring, an outer ring, a retainer, a rolling body, a sealing ring and the like, and the main function of the bearing is to support a mechanical rotating body so as to reduce the mechanical load friction coefficient of equipment in the transmission process. The bearings can be classified into rolling bearings and sliding bearings according to the frictional properties of the moving elements. With the development of the technology, higher requirements are put forward on the matching quality of the bearing, and the bearing is required to have low noise and long service life.

The utility model discloses a chinese utility model patent with publication number CN202220799U, it discloses a bearing inner race, including being cylindric body, its characterized in that, the body lateral surface on have annular positioning groove and two annular seal grooves, annular seal groove face, annular positioning groove face and the surface roughness of body lateral surface the same. The bearing inner ring can facilitate grinding and processing and improve the quality of products. On the other hand, the arc-shaped transition surface can be matched with the bearing sealing ring more tightly, so that the sealing performance of the bearing is improved. However, since the sliding friction of the bearing during operation causes heat generation and wear of the bearing, although the inner ring of the bearing has improved sealing performance, the wear resistance of the inner ring of the bearing needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists to the aforesaid, provide a bearing inner circle with high wear resistance.

The purpose of the utility model is realized like this: the utility model provides a high abrasion bearing inner race, includes the inner circle body, set up the gliding channel of round confession ball on the inner circle body lateral wall, its characterized in that: the utility model discloses a wear-resisting groove, including channel wall, mounting groove, wearing pad, the channel wall is last to be provided with the one deck carburization layer, there is the radial inward mounting groove in the middle part of the channel, be provided with the wearing pad in the mounting groove, the lateral wall of wearing pad with the channel wall is on same cambered surface.

Through adopting above-mentioned technical scheme, generally only be provided with the annular seal groove that supplies the gliding annular constant head tank of ball and supply the sealing washer embedding on the outer wall of traditional bearing inner circle, for improving its wear resistance, to this the utility model discloses set up the one deck carburization layer just also on inner circle body channel at annular constant head tank, can effectively improve the wear resistance of channel through the carburization layer, because the middle part and the ball contact of channel are inseparable most, and here wearing and tearing are also the biggest, to this the utility model discloses the mounting groove has still been seted up at the middle part of channel to set up the cushion in the mounting groove, through the cushion in order to further improve the wear resistance of channel, and then the life of extension bearing inner circle.

The utility model discloses further set up to: the thickness of the carburized layer is 1.5mm-2 mm.

By adopting the technical scheme, the thickness of the carburized layer on the channel is set to be 1.5mm-2mm, so that the carburized layer is not easy to fatigue and peel off while the wear resistance of the channel is improved.

The utility model discloses further set up to: the wear pad is made of a modified POM.

By adopting the technical scheme, the modified POM (polyoxymethylene) is low in friction coefficient, good in wear resistance, high in strength and strong in impact resistance, and is also the modified polyformaldehyde, so that the modified POM is used as a raw material of the wear-resistant pad.

The utility model discloses further set up to: the outer side wall of the inner ring body is also provided with two annular clamping grooves which are respectively positioned at two ends of the inner ring body.

Through adopting above-mentioned technical scheme, two ring groove on the inner circle body are with the installation sealing washer, through ring groove, can effectively improve the fastening of sealing washer on the inner circle body.

The utility model discloses further set up to: the annular clamping groove is formed by a first groove surface, a second groove surface, a third groove surface and a fourth groove surface which are sequentially connected; the other end of the first groove surface is connected with the end face of the inner ring body, the first groove surface is a cylindrical surface, the outer diameter of the first groove surface is smaller than that of the inner ring body, the second groove surface is a conical surface, the outer diameter of the conical surface is gradually reduced from the first groove surface to the third groove surface, the third groove surface is an inwards concave semi-arc ring surface, the outer diameter of the arc ring surface is reduced from two ends to the middle, the other end of the fourth groove surface is connected with the outer side wall of the inner ring body, and the fourth groove surface is tangent to the third groove surface.

By adopting the technical scheme, in order to improve the connection strength and the sealing performance between the annular clamping groove and the sealing ring, the inner wall of the annular clamping groove is provided with a first groove surface, a second groove surface, a third groove surface and a fourth groove surface; be less than the setting of inner circle body with the external diameter of first groove face, thereby make the fourth groove face become a spacing face, can restrict the degree of depth of sealing washer embedding through the fourth groove face, make the bottom of sealing washer support tightly on the fourth groove face, set up the second groove face into the conical surface just also be the ring surface to one side, this ring surface to one side plays the effect of direction, embolia the sealing washer on ring channel with the convenience through this ring surface to one side, because the tight loop that is made by the spring has on the seal lip of sealing washer, for spacing this tight loop, set up the third groove face into the semicircle anchor ring to this, it is spacing to the tight loop through this semicircle anchor ring, thereby strengthen the leakproofness of sealing washer seal lip and inner circle body.

The utility model discloses further set up to: two oil guide grooves which are a group are formed in the outer side wall of the inner ring body, one end of each oil guide groove is communicated with the corresponding channel, the other end of each oil guide groove is communicated with the corresponding fourth groove surface of the corresponding two annular clamping grooves, and the oil guide grooves are more than two groups and are uniformly distributed along the circumferential direction.

Through adopting above-mentioned technical scheme, for improving the speed that lubricating oil flowed into the channel, offer the oil groove of leading that is used for the water conservancy diversion to this on the inner circle body, guide lubricating oil to the channel in through leading the oil groove to improve the lubrication of channel, and then reduce the wearing and tearing of channel.

The utility model has the advantages that:

1. for improving its wear resistance, to this the utility model discloses set up the one deck carburization layer just also on the inner circle body channel at annular positioning groove, can effectively improve the wear resistance of channel through the carburization layer.

2. Because the middle part of channel is inseparable with the ball contact, and here wearing and tearing are also the biggest, to this the utility model discloses the mounting groove has still been seted up at the middle part of channel to set up the abrasion pad in the mounting groove, through the abrasion resistance of abrasion pad in order to further improve the channel, and then the life of extension bearing inner circle.

3. For the speed that improves lubricating oil and flow into the channel, offer the oil groove of leading that is used for the water conservancy diversion to this on the inner circle body, guide lubricating oil to the channel in through leading the oil groove to improve the lubrication of channel, and then reduce the wearing and tearing of channel.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

the reference numbers in the figures are: 1. an inner race body; 2. a channel; 21. a carburized layer; 3. a wear pad; 4. an annular neck; 41. a first groove surface; 42. a second groove surface; 43. a third groove surface; 44. a fourth groove surface; 5. and an oil guide groove.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

a high-abrasion-resistance bearing inner ring is shown in figures 1 and 2 and comprises an inner ring body 1, wherein a circle of channel 2 for sliding balls is formed in the outer side wall of the inner ring body 1; wherein, be provided with one deck carburization layer 21 on the channel 2 wall, there is the radial mounting groove of inwards offering in the middle part of channel 2, is provided with wear pad 3 in the mounting groove, and the lateral wall of wear pad 3 and channel 2 wall are on same cambered surface.

Generally only be provided with the annular seal groove that supplies the gliding annular constant head tank of ball and supply the sealing washer embedding on the outer wall of traditional bearing inner circle, for improving its wear resistance, to this the utility model discloses set up one deck carburization layer 21 on annular constant head tank also is inner circle body 1 channel 2, can effectively improve channel 2's wear resistance through carburization layer 21, because channel 2's middle part and ball contact are inseparabest, and here wearing and tearing are also the biggest, to this the utility model discloses the mounting groove has still been seted up at channel 2's middle part to set up the cushion 3 in the mounting groove, through the cushion 3 in order to further improve channel 2's wear resistance, and then the life of extension bearing inner circle.

The outer side wall of the inner ring body 1 of the utility model is also provided with two annular clamping grooves 4 which are respectively positioned at the two ends of the inner ring body 1;

as shown in fig. 3, the ring slot 4 is formed by a first slot surface 41, a second slot surface 42, a third slot surface 43 and a fourth slot surface 44 which are connected in sequence; the other end of the first groove surface 41 is connected with the end surface of the inner ring body 1, the first groove surface 41 is a cylindrical surface, the outer diameter of the first groove surface is smaller than the outer diameter of the inner ring body 1, the second groove surface 42 is a tapered surface, the outer diameter of the tapered surface is gradually reduced from the first groove surface 41 to the third groove surface 43, the third groove surface 43 is a concave semi-circular arc ring surface, the outer diameter of the circular arc ring surface is reduced from two ends to the middle, the other end of the fourth groove surface 44 is connected with the outer side wall of the inner ring body 1, and the fourth groove surface 44 is tangent to the third groove surface 43.

In order to improve the connection strength and the sealing performance between the ring slot 4 and the sealing ring, the inner wall of the ring slot 4 is provided with a first slot surface 41, a second slot surface 42, a third slot surface 43 and a fourth slot surface 44;

the outer diameter of the first groove surface 41 is smaller than that of the inner ring body 1, so that the fourth groove surface 44 is a limiting surface, the depth of embedding of the sealing ring can be limited by the fourth groove surface 44, the bottom of the sealing ring is abutted against the fourth groove surface 44 tightly, the second groove surface 42 is arranged to be a conical surface, namely an inclined ring surface, the inclined ring surface plays a role in guiding, the sealing ring is sleeved on the annular clamping groove 4 conveniently through the inclined ring surface, the fastening ring made of a spring is arranged on the sealing lip of the sealing ring and is limited, the third groove surface 43 is arranged to be a semi-arc ring surface, the fastening ring is limited through the semi-arc ring surface, and the sealing performance of the sealing lip of the sealing ring and the inner ring body 1 is enhanced.

Optimized, two oil grooves 5 are set up for a set of on the lateral wall of inner circle body 1, and every group leads 5 one ends of oil groove to channel 2, and the other end leads to the fourth trough surface 44 of two ring groove 4 respectively, leads oil groove 5 and has more than two sets of and along circumference direction evenly distributed.

As shown in fig. 1, 2, and 3, in order to increase the speed of the lubricant flowing into the channel 2, an oil guide groove 5 for guiding the lubricant is formed in the inner ring body 1, and the lubricant is guided into the channel 2 through the oil guide groove 5, so that the lubrication of the channel 2 is increased, and the abrasion of the channel 2 is reduced.

Optimally, the thickness of the carburized layer 21 is 1.5mm-2mm, the thickness of the carburized layer 21 on the channel 2 is set to be 1.5mm-2mm, and the carburized layer 21 is not easy to fatigue and peel off while the wear resistance of the channel 2 is improved.

Preferably, the wear pad 3 is made of modified POM, i.e., modified polyoxymethylene, which has a low friction coefficient, good wear resistance, high strength, and strong impact resistance, so the modified POM is used as a raw material of the wear pad 3.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a high abrasion bearing inner race, includes inner race body (1), seted up round on inner race body (1) lateral wall and supplied gliding channel (2) of ball, its characterized in that: be provided with one deck carburization layer (21) on channel (2) wall, there is the radial mounting groove of inwards offering in channel (2) middle part, be provided with in the mounting groove and wear pad (3), the lateral wall of wear pad (3) with channel (2) wall is on same cambered surface.

2. The high wear-resistant bearing inner ring according to claim 1, wherein: the thickness of the carburized layer (21) is 1.5mm-2 mm.

3. A highly wear-resistant bearing inner ring according to claim 1 or 2, characterized in that: the wear-resistant pad (3) is made of modified POM.

4. A highly wear-resistant bearing inner race as set forth in claim 3, wherein: the outer side wall of the inner ring body (1) is further provided with two annular clamping grooves (4), and the two annular clamping grooves (4) are respectively located at two ends of the inner ring body (1).

5. The high wear-resistant bearing inner ring according to claim 4, wherein: the annular clamping groove (4) is formed by a first groove surface (41), a second groove surface (42), a third groove surface (43) and a fourth groove surface (44) which are connected in sequence; the other end of the first groove surface (41) is connected with the end face of the inner ring body (1), the first groove surface (41) is a cylindrical surface, the outer diameter of the first groove surface is smaller than that of the inner ring body (1), the second groove surface (42) is a conical surface, the outer diameter of the conical surface is gradually reduced from the first groove surface (41) to the third groove surface (43), the third groove surface (43) is an inwards concave semi-circular arc ring surface, the outer diameter of the circular arc ring surface is reduced from two ends to the middle, the other end of the fourth groove surface (44) is connected with the outer side wall of the inner ring body (1), and the fourth groove surface (44) is tangent to the third groove surface (43).

6. The high wear-resistant bearing inner ring according to claim 5, wherein: seted up two on the lateral wall of inner circle body (1) and led oil groove (5) for a set of, every group lead oil groove (5) one end and lead to channel (2), the fourth trough surface (44) that the other end leads to two ring groove (4) respectively, lead oil groove (5) have more than two sets of and along circumference direction evenly distributed.