CN111853518A

CN111853518A - Bearing grease injection device structure

Info

Publication number: CN111853518A
Application number: CN202010630555.XA
Authority: CN
Inventors: 侯智伟; 黄勇; 姚伯如; 黄山川; 林妙正
Original assignee: Zhejiang Gaoling New Energy And Technology Co ltd
Current assignee: Zhejiang Gaoling New Energy And Technology Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2020-10-30

Abstract

The invention relates to the technical field of grease injection tools, and discloses a bearing grease injector structure which comprises a base and a grease injection seat, wherein an upper grease injection cavity is arranged on the top surface of the grease injection seat, a lower grease injection cavity is arranged on the bottom surface of the grease injection seat, a grease inlet channel is arranged in the base, the lower grease injection cavity is communicated with the grease inlet channel, and a plurality of flow guide holes communicated with the lower grease injection cavity are formed in the bottom surface of the upper grease injection cavity; the bearing seat is arranged in the upper grease injection cavity and fixedly connected with the center of the grease injection seat through a positioning rod and a bolt, the periphery of the top surface of the bearing seat extends upwards to form an inner check ring, the top surface of the grease injection seat extends upwards to form an outer check ring, an annular grease injection channel is formed between the inner check ring and the outer check ring, a guide sleeve is fixed on the outer side of the upper end of the grease injection seat, a bearing outer ring clamping groove is formed between the outer check ring and the guide sleeve, a guide post is arranged at the upper end of the positioning rod, and a bearing inner ring clamping groove is formed between the inner check ring and. The invention has the advantages of convenient use and uniform grease injection.

Description

Bearing grease injection device structure

Technical Field

The invention relates to the technical field of grease injection tools, in particular to a bearing grease injector structure.

Background

The connecting line of the contact points of the steel balls in the angular contact ball bearing, the bearing inner ring and the bearing outer ring forms an angle with the radial direction, the angle is a contact angle, and the contact angles are generally 15 degrees, 30 degrees and 40 degrees. The angular contact ball bearing can bear large unidirectional axial load and radial load, and the larger the contact angle is, the larger the capacity of bearing the axial load is. The angular contact ball bearings are various, one of the angular contact ball bearings is a separation type angular contact ball bearing, a bearing inner ring, a bearing outer ring and a bearing ball retainer of the separation type angular contact ball bearing are separated, the separation type angular contact ball bearing needs to be assembled and combined for use when in use, lubricating grease needs to be injected among the bearing inner ring, the bearing outer ring and the bearing outer ring before the bearing is used to ensure sufficient lubricity of the bearing, however, the separation type angular contact ball bearing is separated, so that the lubricating grease is inconvenient to inject, the lubricating grease can be injected after the bearing inner ring, the bearing outer ring and the bearing ball retainer are positioned, and at present, no grease injection tool special for the separation type angular contact ball bearing is provided.

Disclosure of Invention

The invention aims to solve the problems of grease injection of the bearing in the prior art, and provides a grease injector structure for the bearing, which is suitable for injecting lubricating grease into a separated angular contact ball bearing, is convenient to use and is uniform in grease injection.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bearing grease injector structure comprises a base and a grease injecting seat fixed with the top surface of the base, wherein an upper grease injecting cavity is arranged on the top surface of the grease injecting seat, a lower grease injecting cavity is arranged on the bottom surface of the grease injecting seat, a grease inlet channel is arranged in the base, the lower grease injecting cavity is communicated with the grease inlet channel, and a plurality of flow guide holes communicated with the lower grease injecting cavity are formed in the bottom surface of the upper grease injecting cavity; the bearing is arranged in the upper grease injection cavity and fixedly connected with the center of the grease injection seat through a positioning rod and a bolt, the periphery of the top surface of the bearing extends upwards to form an inner check ring, the top surface of the grease injection seat extends upwards to form an outer check ring, an annular grease injection channel is formed between the inner check ring and the outer check ring, a guide sleeve is fixed on the outer side of the upper end of the grease injection seat, a bearing outer ring clamping groove is formed between the outer check ring and the guide sleeve, a guide post is arranged at the upper end of the positioning rod, and a bearing inner ring clamping groove is formed between the inner check ring and the outer side of the guide post. The end part of the bearing outer ring is clamped into the bearing outer ring clamping groove for limiting, the bearing inner ring is clamped into the bearing inner ring clamping groove for limiting, the ball retainer is positioned between the bearing inner ring and the bearing outer ring, the outer end of the grease inlet channel on the base is butted with grease injecting equipment (a grease injecting gun and the like) through the outside, lubricating grease sequentially passes through the grease inlet channel, the lower grease inlet cavity, the flow guide hole, the upper grease inlet cavity and the annular grease inlet channel and then enters the bearing, therefore, the uniform grease injection of the bearing is realized, and the ball bearing is particularly suitable for grease injection of a separation type angular contact ball.

Preferably, a grease separating seat is arranged on the positioning rod and located between the supporting seat and the bottom surface of the upper grease injecting cavity, the periphery of the top surface of the grease separating seat extends upwards to form a grease separating ring extending into the annular grease injecting channel, an outer grease injecting gap is formed between the outer wall of the grease separating ring and the inner wall of the upper grease injecting cavity, an inner grease injecting gap is formed between the inner wall of the grease separating ring and the inner retainer ring, and a plurality of grease separating holes used for communicating the upper grease injecting cavity and the inner grease injecting gap are formed in the grease separating seat. The annular grease injection channel is divided into an inner grease injection gap and an outer grease injection gap through the grease passing ring, and lubricating grease is directly led into the outer wall of the bearing inner ring, the inner wall of the bearing outer ring and the clearance of the bearing retainer, so that the using amount of the lubricating grease is reduced, the utilization rate of the lubricating grease is improved, and the waste of the lubricating grease is reduced.

Preferably, the top surface of the alicyclic ring is an arc-shaped supporting surface matched with the bearing retainer. The arc-shaped supporting surface is used for supporting and positioning the bearing retainer.

Preferably, a plurality of adjusting gaskets are sleeved on the positioning rod between the supporting seat and the bottom surface of the upper grease injection cavity. The adjusting gasket is used for adjusting the axial height of the grease distributing seat and the grease distributing ring so as to meet various size requirements during bearing positioning and ensure that the top surface of the grease distributing ring can support the bearing retainer.

Preferably, an inclined chamfer is arranged at the inner edge of the upper end of the guide sleeve, and the guide sleeve is made of nylon. The oblique chamfer plays a guiding role when the bearing outer ring is arranged in the bearing outer ring clamping groove, and the nylon can prevent the bearing outer ring from being scratched.

Preferably, the bottom surface of the lower grease injection cavity is provided with a filter screen, the center of the filter screen is fixed with the lower end of the positioning rod through a bolt, the lower side of the outer side of the filter screen is provided with a support ring, and a spring washer is arranged between the support ring and the base. Lubricating grease entering the bearing can pass through the filter screen, and the filter screen can filter large-particle impurities in the lubricating grease (particle impurities can exist in the lubricating grease due to various reasons).

Preferably, a center hole is formed in the center of the guide column, a plurality of sliding holes are uniformly distributed along the radial direction on the inner wall of the center hole, the outer ends of the sliding holes are communicated with the outside, a supporting pin is arranged in each sliding hole and is in sliding connection with the sliding hole, the inner ends of the supporting pins are connected through a torsion spring, a threaded sleeve is fixed at the upper end of the guide column, a screw rod is arranged in the threaded sleeve and penetrates through the threaded sleeve to be in threaded connection with the threaded sleeve, a conical sliding block is fixed at the lower end of the screw rod, the inner end face of the supporting pin is a spherical surface, and the conical surface of the conical sliding block is abutted against. The bearing inner ring is rubbed with the circumferential surface of the guide post when being installed and positioned every time, and the clearance between the guide post and the bearing inner ring is gradually enlarged along with long-term use, so that the bearing inner ring is loosened in a clamping groove of the bearing inner ring, and the grease injection operation is not facilitated; when the circumferential surface of the guide column is abraded to cause the bearing inner ring to be loosened, the bearing inner ring is arranged in the bearing inner ring clamping groove, the screw rod is rotated to enable the conical slider to move downwards, the conical surface of the conical slider pushes the supporting pin to move outwards, the outer end of the supporting pin extends out of the sliding hole and then is tightly propped and positioned with the inner wall of the bearing inner ring, the screw rod is rotated reversely after grease is injected, the supporting pin retracts into the sliding hole under the action of the torsion spring to reset, and the bearing can be conveniently taken out at the moment.

Preferably, a handle is fixed at the upper end of the screw rod, and anti-skid grains are arranged on the outer side of the handle; and a pre-tightening pressure spring is arranged on the screw rod between the conical sliding block and the threaded sleeve. The handle is convenient for manually rotating the screw rod; when the support pin tightly pushes against the bearing inner ring, the screw rod and the screw sleeve are locked through threads and are matched with the pre-tightening pressure spring for pre-tightening, so that the screw rod is prevented from loosening in the grease injection process, and the use is more stable.

Therefore, the grease injection device has the beneficial effects of convenience in use and uniform grease injection, and is particularly suitable for grease injection of the separated angular contact ball bearing.

Drawings

FIG. 1 is a schematic diagram of a structure of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a cross-sectional view taken at a-a in fig. 2.

FIG. 4 is a schematic connection diagram of the grease injection seat, the grease separation seat and the support seat.

Fig. 5 is a schematic view showing a state where the tapered slider moves downward and the support pin protrudes outward.

In the figure: the grease injection device comprises a base 1, a grease inlet channel 100, a grease injection seat 2, an upper grease injection cavity 200, a lower grease injection cavity 201, a flow guide hole 202, an outer retainer 203, a support seat 3, a positioning rod 30, a bolt 31, an inner retainer 300, a guide sleeve 4, an inclined chamfer 400, a bearing outer ring clamping groove 5, a guide column 6, a central hole 60, a sliding hole 61, a support pin 62, a torsion spring 63, a threaded sleeve 64, a screw rod 65, a tapered sliding block 66, a handle 67, a pre-tightening compression spring 68, a bearing inner ring clamping groove 7, a grease distribution seat 8, an outer grease distribution ring 800, an outer grease injection gap 801, an inner grease injection gap 802, a grease distribution hole 803, an adjusting gasket 9, a filter screen 10, a support ring 11, a spring gasket 12, a bearing 13, a bearing outer ring.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description below:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the bearing grease injector structure includes a base 1 and a grease injecting seat 2 fixed to the top surface of the base, wherein an upper grease injecting cavity 200 is formed on the top surface of the grease injecting seat 2, a lower grease injecting cavity 201 is formed on the bottom surface of the grease injecting seat 2, a grease inlet channel 100 is formed in the base 1, the lower grease injecting cavity 201 is communicated with the grease inlet channel 100, and a plurality of flow guide holes 202 are formed in the bottom surface of the upper grease injecting cavity 200 and communicated with the lower grease injecting cavity; a supporting seat 3 is arranged in the upper grease injection cavity 200, the supporting seat 3 is fixedly connected with the center of the grease injection seat 2 through a positioning rod 30 and a bolt 31, the periphery of the top surface of the supporting seat 3 extends upwards to form an inner check ring 300, the top surface of the grease injection seat 2 extends upwards to form an outer check ring 203, an annular grease injection channel is formed between the inner check ring and the outer check ring, a grease separating seat 8 is arranged between the supporting seat and the bottom surface of the upper grease injection cavity on the positioning rod 4, the periphery of the top surface of the grease separating seat 8 extends upwards to form a grease separating ring 800 extending into the annular grease injection channel, an outer grease injection gap 801 is formed between the outer wall of the grease separating ring 800 and the inner wall of the upper grease injection cavity 200, an inner grease injection gap 802 is formed between the inner wall of the grease separating ring 800 and the inner check ring 300, a plurality of grease separating holes 803 used for communicating the upper grease injection cavity and the inner grease injection gap are formed in the grease; a guide sleeve 4 is fixed on the outer side of the upper end of the grease injection seat 2, an inclined chamfer 400 is arranged at the edge of the inner side of the upper end of the guide sleeve 4, the guide sleeve is made of nylon, a bearing outer ring clamping groove 5 is formed between the outer retainer ring 203 and the guide sleeve 4, a guide post 6 is arranged on the upper end of the positioning rod 30, the positioning rod and the guide post are of an integrated structure, and a bearing inner ring clamping groove 7 is formed between the inner retainer ring 300 and the outer side of the guide post 6; a plurality of adjusting gaskets 9 are sleeved on the position, between the supporting seat and the bottom surface of the upper grease injection cavity, of the positioning rod 4.

The bottom surface of the lower grease injection cavity 201 is provided with a filter screen 10, the center of the filter screen 10 is fixed with the lower end of the positioning rod through a bolt 31, the lower side of the outer side of the filter screen 10 is provided with a support ring 11, and a spring washer 12 is arranged between the support ring and the base.

As shown in fig. 4 and 5, the center of the guide post 6 is provided with a central hole 60, the inner wall of the central hole 60 is provided with a plurality of sliding holes 61 uniformly distributed along the radial direction, the number of the sliding holes in the embodiment is four,

the outer ends of the sliding holes are communicated with the outside, each sliding hole is internally provided with a supporting pin 62, the supporting pins are in sliding connection with the sliding holes, the inner ends of the supporting pins 62 are connected through a torsion spring 63, the outer ends of the supporting pins are retracted into the sliding holes in a natural state, the upper end of the guide column 6 is fixed with a threaded sleeve 64, a screw 65 is arranged in the threaded sleeve, the screw penetrates through the threaded sleeve and is in threaded connection with the threaded sleeve, the lower end of the screw 65 is fixed with a conical sliding block 66, the upper end of the screw is fixed with a handle 67, and the outer side of the; the inner end surface of the supporting pin 62 is a spherical surface, the conical surface of the conical slide block 66 is abutted against the spherical surface, and a pre-tightening pressure spring 68 is arranged on the screw rod between the conical slide block and the threaded sleeve. When the screw rotates forward to drive the conical slide block to move downwards, the conical slide block pushes the supporting pin to move outwards, and when the screw rotates reversely, the supporting pin retracts into the sliding hole to reset under the action of the torsion spring.

The principle of the invention is as follows with reference to the attached drawings: the bearing 13 is connected with the bearing grease injector in the state shown in fig. 3, the end part of the bearing outer ring 130 is clamped into the bearing outer ring clamping groove 5 for limiting, the bearing inner ring 131 is clamped into the bearing inner ring clamping groove 7 for limiting, the retainer 132 (the retainer is internally provided with balls) is positioned between the bearing inner ring and the bearing outer ring, and the lower end of the retainer 132 is supported and limited by the arc-shaped supporting surface of the top surface of the alicyclic separating ring 800; the lubricating grease is butted with the outer end of a grease inlet channel on a base through external grease injecting equipment (a grease injecting gun and the like), after the lubricating grease sequentially passes through the grease inlet channel 100, a lower grease inlet cavity 201, a flow guide hole 202 and an upper grease inlet cavity 200, part of the grease enters a part between a retainer and a bearing inner ring through a grease passing hole 803 and an inner grease injecting gap 802 to lubricate the part between a ball and the bearing inner ring, the other part of the grease enters a part between a bearing outer ring and the retainer through an outer grease injecting gap 801 to lubricate the part between the ball and the bearing outer ring and the clearance between the retainer and the ball; grease is annotated to the bearing through this grease ware is annotated to bearing, and grease injection is even, grease injection volume is suitable, reduces grease waste, especially is fit for separating type angular contact ball bearing and annotates fat.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.

Claims

1. A bearing grease injector structure is characterized by comprising a base and a grease injection seat fixed with the top surface of the base, wherein an upper grease injection cavity is arranged on the top surface of the grease injection seat, a lower grease injection cavity is arranged on the bottom surface of the grease injection seat, a grease inlet channel is arranged in the base, the lower grease injection cavity is communicated with the grease inlet channel, and a plurality of flow guide holes communicated with the lower grease injection cavity are formed in the bottom surface of the upper grease injection cavity; the bearing is arranged in the upper grease injection cavity and fixedly connected with the center of the grease injection seat through a positioning rod and a bolt, the periphery of the top surface of the bearing extends upwards to form an inner check ring, the top surface of the grease injection seat extends upwards to form an outer check ring, an annular grease injection channel is formed between the inner check ring and the outer check ring, a guide sleeve is fixed on the outer side of the upper end of the grease injection seat, a bearing outer ring clamping groove is formed between the outer check ring and the guide sleeve, a guide post is arranged at the upper end of the positioning rod, and a bearing inner ring clamping groove is formed between the inner check ring and the outer side of the guide post.

2. The bearing grease injector structure of claim 1, wherein a grease separating seat is arranged on the positioning rod between the supporting seat and the bottom surface of the upper grease injecting cavity, the periphery of the top surface of the grease separating seat extends upwards to form a grease separating ring extending into the annular grease injecting channel, an outer grease injecting gap is formed between the outer wall of the grease separating ring and the inner wall of the upper grease injecting cavity, an inner grease injecting gap is formed between the inner wall of the grease separating ring and the inner retainer ring, and a plurality of grease separating holes for communicating the upper grease injecting cavity and the inner grease injecting gap are formed in the grease separating seat.

3. The structure of claim 2, wherein the top surface of the alicyclic ring is an arc-shaped supporting surface matched with the bearing retainer.

4. The structure of the bearing grease injector as claimed in claim 2 or 3, wherein a plurality of adjusting gaskets are sleeved on the positioning rod between the supporting seat and the bottom surface of the upper grease injection cavity.

5. The structure of a bearing grease injector as claimed in claim 1, wherein the guide sleeve is made of nylon and has an inner edge at the upper end thereof provided with a bevel.

6. The structure of claim 1, wherein a filter screen is arranged on the bottom surface of the lower grease injection cavity, the center of the filter screen is fixed to the lower end of the positioning rod through a bolt, a support ring is arranged on the lower side of the outer side of the filter screen, and a spring washer is arranged between the support ring and the base.

7. The structure of a bearing grease injector as claimed in claim 1 or 2, wherein the guide post has a central hole in the center, the inner wall of the central hole has a plurality of sliding holes uniformly distributed along the radial direction, the outer ends of the sliding holes communicate with the outside, each sliding hole has a support pin slidably connected with the sliding hole, the inner ends of the support pins are connected through a torsion spring, the upper end of the guide post is fixed with a threaded sleeve, a screw rod is arranged in the threaded sleeve, the screw rod passes through the threaded sleeve and is in threaded connection with the threaded sleeve, the lower end of the screw rod is fixed with a conical slide block, the inner end surface of the support pin is a spherical surface, and the conical surface of the conical slide block abuts against the spherical surface.

8. The structure of the bearing grease injector as claimed in claim 7, wherein a handle is fixed at the upper end of the screw rod, and anti-skid threads are arranged on the outer side of the handle; and a pre-tightening pressure spring is arranged on the screw rod between the conical sliding block and the threaded sleeve.