Bearing grease injector structure

Abstract

The present invention relates to the technical field of grease injection tooling, and discloses a bearing grease injector structure, including a base, a grease injection seat, an upper grease injection cavity is provided on the top surface of the grease injection seat, a lower grease injection cavity is provided on the bottom surface of the grease injection seat, a grease inlet channel is provided in the base, the lower grease injection cavity is connected with the grease inlet channel, and a plurality of flow guide holes connected to the lower grease injection cavity are provided on the bottom surface of the upper grease injection cavity; a support seat is provided in the upper grease injection cavity, and the support seat is fixedly connected to the center of the grease injection seat through a positioning rod and a bolt, the outer circumference of the top surface of the support seat extends upward to form an inner retaining ring, the top surface of the grease injection seat extends upward to form an outer retaining ring, an annular grease injection channel is formed between the inner retaining ring and the outer retaining ring, a guide sleeve is fixed on the outer side of the upper end of the grease injection seat, a bearing outer ring slot is formed between the outer retaining ring and the guide sleeve, a guide column is provided on the upper end of the positioning rod, and a bearing inner ring slot is formed between the inner retaining ring and the outer side of the guide column. The present invention has the beneficial effects of convenient use and uniform grease injection.

Description

Technical Field

[0001] The invention relates to the technical field of grease injection tooling, and in particular to a bearing grease injector structure. Background Art

[0002] The line connecting the contact points between the steel ball in the angular contact ball bearing and the inner ring and outer ring of the bearing forms an angle with the radial direction, which is the contact angle. The contact angle is generally 15°, 30° and 40°. Angular contact ball bearings can withstand large unidirectional axial loads and radial loads at the same time. The larger the contact angle, the greater the ability to withstand axial loads. There are many types of angular contact ball bearings, one of which is a separable angular contact ball bearing. The inner ring, outer ring and ball cage of the separable angular contact ball bearing are all separated. They need to be assembled and used in combination. Before use, the bearing needs to be injected with lubricating grease between the inner ring, ball and outer ring of the bearing to ensure sufficient lubricity of the bearing. However, since the separable angular contact ball bearing is separated, it is inconvenient to add lubricating grease. The inner ring, outer ring and ball cage of the bearing must be positioned before adding lubricating grease. At present, there is no grease injection tooling specifically for separable angular contact ball bearings. Summary of the invention

[0003] In order to solve the above problems existing in bearing grease injection in the prior art, the present invention provides a bearing grease injector structure which is suitable for injecting lubricating grease into a separable angular contact ball bearing, is easy to use, and injects grease evenly.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A bearing grease injector structure comprises a base and a grease injection seat fixed to the top surface of the base, the top surface of the grease injection seat is provided with an upper grease injection cavity, the bottom surface of the grease injection seat is provided with a lower grease injection cavity, a grease inlet channel is provided in the base, the lower grease injection cavity is connected with the grease inlet channel, and the bottom surface of the upper grease injection cavity is provided with a plurality of guide holes connected to the lower grease injection cavity; a support seat is provided in the upper grease injection cavity, the support seat is fixedly connected to the center of the grease injection seat by a positioning rod and bolts, the top surface outer circumference of the support seat extends upward to form an inner retaining ring, the top surface of the grease injection seat extends upward to form an outer retaining ring, an annular grease injection channel is formed between the inner retaining ring and the outer retaining ring, a guide sleeve is fixed to the outer side of the upper end of the grease injection seat, a bearing outer ring groove is formed between the outer retaining ring and the guide sleeve, a guide column is provided at the upper end of the positioning rod, and a bearing inner ring groove is formed between the inner retaining ring and the outer side of the guide column. The end of the bearing outer ring is inserted into the bearing outer ring slot for limiting position, the bearing inner ring is inserted into the bearing inner ring slot for limiting position, the ball retainer is located between the bearing inner ring and the bearing outer ring, and is connected to the outer end of the grease inlet channel on the base through external grease injection equipment (grease gun, etc.), and the lubricating grease passes through the grease inlet channel, the lower grease injection cavity, the guide hole, the upper grease injection cavity, and the annular grease injection channel in sequence and then enters the bearing, thereby achieving uniform grease injection of the bearing, which is especially suitable for grease injection of separable angular contact ball bearings.

[0006] Preferably, a grease separation seat is provided on the positioning rod between the support seat and the bottom surface of the upper grease injection cavity, the outer circumference of the top surface of the grease separation seat extends upward to form a grease separation ring extending into the annular grease injection channel, an outer grease injection gap is formed between the outer wall of the grease separation ring and the inner wall of the upper grease injection cavity, an inner grease injection gap is formed between the inner wall of the grease separation ring and the inner retaining ring, and a plurality of grease separation holes for connecting the upper grease injection cavity and the inner grease injection gap are provided on the grease separation seat. The annular grease injection channel is divided into an inner grease injection gap and an outer grease injection gap by the grease separation ring, and the lubricating grease is directly introduced into the outer wall of the inner ring of the bearing, the inner wall of the outer ring of the bearing and the clearance of the bearing retainer, thereby reducing the amount of lubricating grease used, improving the utilization rate of the lubricating grease, and reducing the waste of the lubricating grease.

[0007] Preferably, the top surface of the fat-dividing ring is an arc-shaped support surface matching the bearing retainer, and the arc-shaped support surface is used for supporting and positioning the bearing retainer.

[0008] Preferably, a plurality of adjusting washers are sleeved on the positioning rod between the support seat and the bottom surface of the upper grease injection cavity. The adjusting washers are used to adjust the axial height of the grease separation seat and the grease separation ring to meet various dimensional requirements when positioning the bearing, while ensuring that the top surface of the grease separation ring can support the bearing retainer.

[0009] Preferably, the inner edge of the upper end of the guide sleeve is provided with an oblique chamfer, and the guide sleeve is made of nylon. The oblique chamfer plays a guiding role when the bearing outer ring is installed into the bearing outer ring slot, and the nylon can prevent the bearing outer ring from being scratched.

[0010] Preferably, a filter screen is provided on the bottom surface of the grease injection cavity, the center of the filter screen is fixed to the lower end of the positioning rod by bolts, a support ring is provided on the lower side of the outer side of the filter screen, and a spring washer is provided between the support ring and the base. The lubricating grease entering the bearing will pass through the filter screen, and the filter screen can filter out large particles of impurities in the lubricating grease (particulate impurities may exist in the lubricating grease due to various reasons).

[0011] Preferably, a center hole is provided at the center of the guide column, and a plurality of sliding holes evenly distributed in the radial direction are provided on the inner wall of the center hole, the outer end of the sliding hole is connected to the outside, and a support pin is provided in each sliding hole, and the support pin is slidably connected to the sliding hole, and the inner ends of the support pins are connected by a torsion spring, and a screw sleeve is fixed to the upper end of the guide column, and a screw rod is provided in the screw sleeve, and the screw rod passes through the screw sleeve and is threadedly connected to the screw sleeve, and a conical slider is fixed to the lower end of the screw rod, and the inner end surface of the support pin is a spherical surface, and the conical surface of the conical slider abuts against the spherical surface. Each time the bearing inner ring is installed and positioned, it will rub against the circumferential surface of the guide column. With long-term use, the gap between the guide column and the bearing inner ring will gradually increase, eventually causing the bearing inner ring to loosen in the bearing inner ring groove, which is not conducive to grease injection. In this structure, when the circumferential surface of the guide column wears out and causes the bearing inner ring to loosen, after the bearing inner ring is installed into the bearing inner ring groove, the screw is rotated to move the tapered slider downward, and the tapered surface of the tapered slider pushes the support pin to move outward. After the outer end of the support pin extends out of the sliding hole, it is tightened and positioned against the inner wall of the bearing inner ring. After grease injection, the screw is rotated in the opposite direction, and the support pin is retracted into the sliding hole and reset under the action of the torsion spring. At this time, the bearing can be easily removed.

[0012] Preferably, a handle is fixed to the upper end of the screw, and an anti-slip pattern is arranged on the outer side of the handle; a pre-tightening spring is arranged at the part between the conical slider and the screw sleeve on the screw. The handle is convenient for manually rotating the screw; when the support pin is tightened against the inner ring of the bearing, the screw and the screw sleeve are locked by threads and pre-tightened with the pre-tightening spring, so as to prevent the screw from loosening during the grease injection process, and the use is more stable.

[0013] Therefore, the present invention has the beneficial effects of easy use and uniform grease injection, and is particularly suitable for grease injection of separable angular contact ball bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural schematic diagram of the present invention.

[0015] Figure 2 for Figure 1 Top view of the .

[0016] Figure 3 for Figure 2 Sectional view at AA.

[0017] Figure 4 It is a connection diagram of the grease injection seat, grease distribution seat and support seat.

[0018] Figure 5 It is a schematic diagram of the state in which the tapered slider moves downward and the support pin extends outward.

[0019] In the figure: base 1, grease inlet channel 100, grease injection seat 2, upper grease injection cavity 200, lower grease injection cavity 201, guide hole 202, outer retaining ring 203, support seat 3, positioning rod 30, bolt 31, inner retaining ring 300, guide sleeve 4, chamfer 400, bearing outer ring slot 5, guide column 6, center hole 60, sliding hole 61, support pin 62, torsion spring 63, screw sleeve 64, screw rod 65, tapered slider 66, handle 67, pre-tightening spring 68, bearing inner ring slot 7, grease separation seat 8, grease separation ring 800, outer grease injection gap 801, inner grease injection gap 802, grease separation hole 803, adjusting gasket 9, filter screen 10, support ring 11, spring washer 12, bearing 13, bearing outer ring 130, bearing inner ring 131, retaining frame 132. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4A bearing grease injector structure shown in the figure comprises a base 1 and a grease injecting seat 2 fixed to the top surface of the base, an upper grease injecting cavity 200 is provided on the top surface of the grease injecting seat 2, a lower grease injecting cavity 201 is provided on the bottom surface of the grease injecting seat 2, a grease inlet channel 100 is provided 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 connected to the lower grease injecting cavity are provided on the bottom surface of the upper grease injecting cavity 200; a support seat 3 is provided in the upper grease injecting cavity 200, and the support seat 3 is fixedly connected to the center of the grease injecting seat 2 by a positioning rod 30 and a bolt 31, the outer circumference of the top surface of the support seat 3 extends upward to form an inner retaining ring 300, the top surface of the grease injecting seat 2 extends upward to form an outer retaining ring 203, an annular grease injecting channel is formed between the inner retaining ring and the outer retaining ring, a grease separator 8 is provided on the positioning rod 4 between the support seat and the bottom surface of the upper grease injecting cavity, the outer circumference of the top surface of the grease separator 8 extends upward to form a grease separator extending into the annular grease injecting channel Ring 800, an outer grease injection gap 801 is formed between the outer wall of the grease dividing 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 dividing ring 800 and the inner retaining ring 300, and a plurality of grease dividing holes 803 for connecting the upper grease injection cavity and the inner grease injection gap are provided on the grease dividing seat 8, and the top surface of the grease dividing ring 800 is an arc-shaped supporting surface matching the bearing retainer; a guide sleeve 4 is fixed to the outer side of the upper end of the grease injection seat 2, and an oblique chamfer 400 is provided at the inner edge of the upper end of the guide sleeve 4. The guide sleeve is made of nylon, and a bearing outer ring groove 5 is formed between the outer retaining ring 203 and the guide sleeve 4. A guide column 6 is provided at the upper end of the positioning rod 30, and the positioning rod and the guide column are an integrated structure, and a bearing inner ring groove 7 is formed between the inner retaining ring 300 and the outer side of the guide column 6; a plurality of adjusting gaskets 9 are provided on the positioning rod 4 at a position between the support seat and the bottom surface of the upper grease injection cavity.

[0022] A filter screen 10 is provided on the bottom surface of the grease injection cavity 201, and the center of the filter screen 10 is fixed to the lower end of the positioning rod by a bolt 31. A support ring 11 is provided on the lower outer side of the filter screen 10, and a spring washer 12 is provided between the support ring and the base.

[0023] like Figure 4 and Figure 5 As shown, a center hole 60 is provided at the center of the guide column 6, and a plurality of sliding holes 61 evenly distributed in the radial direction are provided on the inner wall of the center hole 60. In this embodiment, there are four sliding holes.

[0024] The outer end of the sliding hole is connected to the outside world. Each sliding hole is provided with a support pin 62, which is slidably connected to the sliding hole. The inner ends of the support pins 62 are connected by torsion springs 63. In the natural state, the outer ends of the support pins are retracted into the sliding hole. The upper end of the guide column 6 is fixed with a screw sleeve 64, and a screw rod 65 is provided in the screw sleeve. The screw rod passes through the screw sleeve and is threadedly connected with the screw sleeve. The lower end of the screw rod 65 is fixed with a conical slider 66, and the upper end of the screw rod is fixed with a handle 67. The outer side of the handle is provided with anti-slip patterns. The inner end surface of the support pin 62 is a spherical surface, and the conical surface of the conical slider 66 abuts against the spherical surface. A pre-tightening spring 68 is provided on the part of the screw rod located between the conical slider and the screw sleeve. When the screw rod rotates forward to drive the conical slider to move downward, the conical slider pushes the support pin to move outward. When the screw rod rotates in the opposite direction, the support pin retracts into the sliding hole and resets under the action of the torsion spring.

[0025] In conjunction with the accompanying drawings, the principle of the present invention is as follows: the bearing 13 is as follows Figure 3 The state shown is connected with the bearing grease injector, the end of the bearing outer ring 130 is clamped into the bearing outer ring groove 5 for limiting position, the bearing inner ring 131 is clamped into the bearing inner ring groove 7 for limiting position, the retaining frame 132 (with balls installed in the retaining frame) is located between the bearing inner ring and the bearing outer ring, and the lower end of the retaining frame 132 is supported and limited by the arc-shaped supporting surface on the top surface of the grease dividing ring 800; the external grease injection equipment (grease injection gun, etc.) is connected with the outer end of the grease inlet channel on the base, and the lubricating grease passes through the grease inlet channel 100, the lower grease injection cavity 201, the guide hole 202, the upper grease injection cavity 203, the upper grease injection cavity 204, the upper grease injection cavity 205, the upper grease injection cavity 206, the upper grease injection cavity 207, the upper grease injection cavity 208, the upper grease injection cavity 209, the upper grease injection cavity 210, the upper grease injection cavity 211, the upper grease injection cavity 212, the upper grease injection cavity 213, the upper grease injection cavity 214, the upper grease injection cavity 215, the upper grease injection cavity 216, the upper grease injection cavity 217, the upper grease injection cavity 218, the upper grease injection cavity 219, the upper grease injection cavity 220, the upper grease injection cavity 221, the upper grease injection cavity 222, the upper grease injection cavity 223, the upper grease injection cavity 224, the upper grease injection cavity 225, the upper grease injection cavity 226, the upper grease injection cavity 227, After the grease cavity 200, a part of the grease enters the area between the retaining frame and the inner ring of the bearing through the grease separation hole 803 and the internal grease injection gap 802 to lubricate the area between the ball and the inner ring of the bearing, and the other part of the grease enters the area between the outer ring of the bearing and the retaining frame through the external grease injection gap 801 to lubricate the clearance between the ball and the outer ring of the bearing and between the retaining frame and the ball; when the bearing is greased by this bearing greaser, the grease is injected evenly and the grease injection amount is appropriate, which reduces grease waste and is particularly suitable for grease injection of separable angular contact ball bearings.

[0026] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A bearing grease injector structure, characterized in that: It comprises a base, a grease injection seat fixed to the top surface of the base, 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 connected with the grease inlet channel, and a plurality of flow guide holes connected to the lower grease injection cavity are arranged on the bottom surface of the upper grease injection cavity; a support seat is arranged in the upper grease injection cavity, and the support seat is fixedly connected to the center of the grease injection seat through a positioning rod and bolts, the outer circumference of the top surface of the support seat extends upward to form an inner retaining ring, the top surface of the grease injection seat extends upward to form an outer retaining ring, an annular grease injection channel is formed between the inner retaining ring and the outer retaining ring, a guide sleeve is fixed to the outer side of the upper end of the grease injection seat, a bearing outer ring groove is formed between the outer retaining ring and the guide sleeve, a guide column is arranged on the upper end of the positioning rod, and a bearing inner ring groove is formed between the inner retaining ring and the outer side of the guide column; A fat separation seat is provided on the positioning rod between the support seat and the bottom surface of the upper grease injection cavity. The outer periphery of the top surface of the fat separation seat extends upward to form a fat separation ring extending into the annular grease injection channel. An outer grease injection gap is formed between the outer wall of the fat separation ring and the inner wall of the upper grease injection cavity. An inner grease injection gap is formed between the inner wall of the fat separation ring and the inner retaining ring. The fat separation seat is provided with a plurality of fat separation holes for connecting the upper grease injection cavity and the inner grease injection gap. An oblique chamfer is arranged at the inner edge of the upper end of the guide sleeve, and the guide sleeve is made of nylon; A center hole is provided at the center of the guide column, and a plurality of sliding holes evenly distributed in the radial direction are provided on the inner wall of the center hole. The outer end of the sliding hole is connected to the outside world, and a support pin is provided in each sliding hole. The support pin is slidably connected to the sliding hole, and the inner ends of the support pins are connected by torsion springs. A screw sleeve is fixed to the upper end of the guide column, and a screw rod is provided in the screw sleeve. The screw rod passes through the screw sleeve and is threadedly connected to the screw sleeve, and a conical slider is fixed to the lower end of the screw rod. The inner end surface of the support pin is a spherical surface, and the conical surface of the conical slider abuts against the spherical surface.

2. A bearing grease injector structure according to claim 1, characterized in that: The top surface of the fat-dividing ring is an arc-shaped supporting surface matching the bearing retainer.

3. A bearing grease injector structure according to claim 1 or 2, characterized in that: A plurality of adjusting gaskets are sleeved on the position of the positioning rod between the supporting seat and the bottom surface of the upper grease injection cavity.

4. A bearing grease injector structure according to claim 1, characterized in that: A filter screen is provided on the bottom surface of the grease injection cavity, the center of the filter screen is fixed to the lower end of the positioning rod by bolts, a support ring is provided on the lower outer side of the filter screen, and a spring washer is provided between the support ring and the base.

5. A bearing grease injector structure according to claim 1, characterized in that: A handle is fixed to the upper end of the screw rod, and anti-slip grooves are arranged on the outer side of the handle; a pre-tightening compression spring is arranged at a position between the conical sliding block and the screw sleeve on the screw rod.

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