Self-lubricating bearing puller

Abstract

The utility model discloses a kind of self-lubricating bearing puller, it is related to the field of puller, including fixed seat, the middle part of fixed seat is connected with adjusting lever, the bottom equiangular sliding connection of fixed seat has puller jaw, the middle part of the bottom surface of fixed seat is provided with resistance column, the inside of fixed seat is provided with guide assembly, the top of fixed seat is provided with oil bag, the top outside of adjusting lever is provided with pressing plate, the pressing plate is extruded contact with oil bag, the oil bag is communicated with lubricating pipe, the inside middle part of puller jaw and the inside of resistance column are distributed with lubricating pipe. The self-lubricating bearing puller, in the use process, by the effect of guide assembly, drive puller rod to carry out stable drawing to bearing, and after pressing plate extrusion to oil bag, lubricating liquid is injected into screw rod and the bearing to be drawn by lubricating pipe, to reduce screw rod wear and tear and the drawing resistance of bearing, to improve the practicality of puller.

Description

Technical Field

[0001] This utility model relates to the field of puller technology, specifically a self-lubricating bearing puller. Background Technology

[0002] As a core component of mechanical transmission systems, bearings are widely used in automobiles, machine tools, wind power equipment and other fields. When repairing equipment or replacing parts, it is necessary to use a bearing puller to remove the interference fit bearing from the shaft diameter. Existing bearing pullers are relatively complicated to use and require uniform pulling force, which brings inconvenience to the user and low work efficiency. At the same time, when pulling bearings with a lot of rust, it is not convenient to lubricate the bearing, which brings inconvenience to the pulling process.

[0003] To address the aforementioned shortcomings, existing technology (Chinese patent CN217620373U, published on 2022-10-21) describes a puller. In use, rotating the connecting disc with a handle lowers the threaded rod and movable block, ultimately clamping the bearing to be removed via a clamping rod. Reversing the rotation of the connecting disc raises the threaded rod, pulling the bearing out of the device via the clamping rod. This simple and quick operation results in high efficiency. Furthermore, the movable block's descent causes the connecting plate to descend synchronously. The inverted "L"-shaped connecting plate's descent compresses the oil chamber, which then delivers lubricating oil through an output pipe to the clamping rod, facilitating the pulling action and improving worker efficiency. This makes it easy to remove rusted bearings, and the process is simple and quick.

[0004] In the above solution, the bearing is pulled by the clamping rod and the oil chamber of the movable block is set up for lubrication. However, in this process, the coefficient of friction between the clamping rod and the bearing, as well as between the screw and the movable block, will increase, which will aggravate the wear of the parts surface. This will result in greater resistance during the lifting process, affect the pulling action of the bearing, reduce the service life of the puller, and also affect the pulling quality. Utility Model Content

[0005] The purpose of this invention is to provide a self-lubricating bearing puller to solve the problems mentioned in the background art. In the process of using existing bearing pullers, the bearing is pulled by the clamping rod, and the movable block is set to squeeze the oil chamber for lubrication. However, in this process, the coefficient of friction between the clamping rod and the bearing, as well as between the screw and the movable block, will increase, aggravating the wear of the component surfaces. This will result in greater resistance during the lifting process, affecting the pulling action of the bearing, reducing the service life of the puller, and also affecting the pulling quality.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-lubricating bearing puller, comprising a fixed seat, an adjusting rod being connected through the middle of the fixed seat, a puller claw being slidably connected at equal angles to the bottom of the fixed seat and a contact post being provided in the middle of the bottom surface of the fixed seat and a contact post abutting against the center of the bearing.

[0007] The fixed base is equipped with a guide component inside, which drives the puller claw to stably grip the bearing. The top of the fixed base is equipped with an oil bladder, and the outer side of the top of the adjusting rod is equipped with a pressure plate. The pressure plate is in pressure contact with the oil bladder. The oil bladder is connected to a lubrication pipe, which is distributed in the middle of the inner side of the puller claw and inside the contact post.

[0008] Furthermore, the guiding component includes a circular plate rotatably connected to the inner center of the fixed base. A guide groove is formed through the circular plate at equal angles. The guide groove is configured as an arc structure. A cylinder is slidably connected in the guide groove. The bottom of the cylinder is slidably connected in a limiting groove. The limiting groove is configured as a rectangular structure. The limiting groove is formed at equal angles at the bottom of the fixed base.

[0009] Furthermore, a puller is fixedly connected to the bottom of the cylinder. The puller is configured with an "L" shape and the bottom of the puller is configured with a barb-like structure.

[0010] Furthermore, the upper part of the adjusting rod is set as a rectangular structure, and the through-hole between the adjusting rod, the circular plate, and the fixed base is set as a rectangular structure. The bottom of the adjusting rod is integrally provided with a rotating rod, which is set as a round rod structure.

[0011] Furthermore, the rotating rod is connected through to the top of the screw, the screw is rotatably connected to the middle of the bottom surface of the fixed seat, a protrusion is fixed on the outer side of the bottom of the rotating rod, the protrusion is slidably connected in the spiral groove, and the spiral groove is opened on the inner wall of the screw.

[0012] Furthermore, the rotating rod drives the screw to form a rotating structure through the protrusion and the spiral groove, and the outer side of the screw is threaded with an abutment post.

[0013] Furthermore, the abutment post forms a vertical sliding structure through a screw and a limiting rod, and the lubricating oil is located between the abutment post and the screw after injection.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This self-lubricating bearing puller, during use, uses the guiding component to drive the puller rod to pull the bearing stably, and after the pressure plate squeezes the oil bladder, the lubricant is injected into the screw and the bearing to be pulled through the lubrication pipe, thereby reducing screw wear and bearing pulling resistance, thus improving the practicality of the puller.

[0016] Furthermore, when the adjusting rod is rotated, the circular plate rotates synchronously. The arc-shaped guide groove on the circular plate rotates with the circular plate, and the cylinder slidably connected in the guide groove moves along the guide groove trajectory. The cylinder is guided by the arc-shaped guide groove and constrained by the rectangular limiting groove, which together cause the cylinder to drive the pull claw to open or close synchronously in the radial direction. The barbed structure at the bottom of the pull claw can firmly hook the edge of the bearing, ensuring that the bearing is subjected to uniform force and avoiding eccentric deformation.

[0017] Furthermore, when the pressure plate descends, it squeezes the oil bladder at the top of the fixed seat. The lubricating oil in the oil bladder is forced out through the lubrication pipe. The lubricating fluid in the lubrication pipe is delivered to the inner middle of the puller claw to reduce the friction between the puller claw and the bearing edge during pulling, and to the interior of the abutment column. Finally, it seeps into the threaded connection between the abutment column and the screw to reduce the thread transmission resistance. When the pressure plate rises, the oil bladder resets under its own elasticity and draws oil from the outside to replenish it, thus achieving self-lubrication.

[0018] Furthermore, when the adjusting rod rotates, the protrusion slides along the spiral groove, driving the screw to rotate. The screw and the abutment post are connected by threads, allowing the abutment post to slide vertically. When descending, it presses against the shaft diameter at the center of the bearing, providing reverse support force; when rising, it disengages, making it easier to pick up and put down the bearing. After the abutment post presses against the shaft diameter, the adjusting rod continues to rotate, and the guide assembly drives the puller claw to retract and hook the bearing. At this time, the rotation of the adjusting rod is converted into the upward pulling force of the puller claw, which, together with the reverse support of the abutment post, smoothly pulls the bearing off the shaft diameter. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall bottom view of the present invention;

[0021] Figure 3 This is a top view schematic diagram of the distribution of the pressure plate, guide groove and pull rod of this utility model;

[0022] Figure 4 This is a cross-sectional view of the connection between the screw and the contact post of this utility model.

[0023] Figure 5 This is an exploded structural diagram of the connection between the adjusting rod, screw, and contact post of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the bottom of the adjusting column and the middle of the lubrication pipe of this utility model.

[0025] In the diagram: 1. Fixed base; 2. Adjusting rod; 3. Circular plate; 4. Guide groove; 5. Cylinder; 6. Limiting groove; 7. Pulling claw; 8. Rotating rod; 9. Protrusion; 10. Spiral groove; 11. Screw; 12. Abutting post; 13. Limiting rod; 14. Pressure plate; 15. Oil bladder; 16. Lubrication pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figure 1 - Figure 2 The present invention provides the following technical solution: a self-lubricating bearing puller, comprising a fixed seat 1, an adjusting rod 2 being connected through the middle of the fixed seat 1, a puller claw 7 being slidably connected at an equal angle to the bottom of the fixed seat 1 and abutting the edge of the bearing, an abutting post 12 being provided in the middle of the bottom surface of the fixed seat 1 and abutting the center of the bearing, a guide component being provided inside the fixed seat 1 and the guide component driving the puller claw 7 to stably grip the bearing, an oil bladder 15 being provided at the top of the fixed seat 1, a pressure plate 14 being provided on the outer side of the top of the adjusting rod 2, the pressure plate 14 being pressed and contacted with the oil bladder 15, the oil bladder 15 being connected to a lubrication pipe 16, and the lubrication pipe 16 being distributed in the middle of the inner side of the puller claw 7 and inside the abutting post 12.

[0028] During use, the guide components inside the fixed base 1 ensure that the puller claw 7 is subjected to force synchronously, avoiding uneven load on the bearing. The contact post 12 contacts the middle of the bearing. The self-lubricating system automatically supplies oil through mechanical extrusion. The adjusting rod 2 drives the pressure plate 14 to squeeze the oil bladder 15. The lubricating oil is output to the screw 11 and the bearing through the lubrication pipe 16, reducing the friction coefficient between the puller claw 7 and the bearing, and reducing the transmission resistance between the screw 11 and the contact post 12. The linkage between the adjusting rod 2 and the screw 11 realizes the integrated operation of "tightening-gripping-pulling". Compared with traditional pullers, the operating force is reduced, the service life of the components is extended, and the bearing is not deformed and the shaft diameter is not damaged during the pulling process, which significantly improves the disassembly efficiency and quality. Example

[0029] Based on Embodiment 1, a stabilizing pulling mechanism is also disclosed to pull the bearing from the shaft diameter, such as... Figure 2 - Figure 4As shown, its specific structure is as follows: The guide assembly includes a circular plate 3 rotatably connected to the middle of the inner side of the fixed base 1. A guide groove 4 is opened through the circular plate 3 at equal angles. The guide groove 4 is set as an arc structure. A cylinder 5 is slidably connected in the guide groove 4. The bottom of the cylinder 5 is slidably connected in the limiting groove 6. The limiting groove 6 is set as a rectangular structure. The limiting groove 6 is opened at equal angles at the bottom of the fixed base 1. A pull claw 7 is fixedly connected to the bottom of the cylinder 5. The pull claw 7 is set as an "L" shaped structure. The bottom of the pull claw 7 is set as a barb-shaped structure. The upper part of the adjusting rod 2 is set as a rectangular structure. The penetration point between the adjusting rod 2 and the circular plate 3 and the fixed base 1 is set as a rectangular structure. A rotating rod 8 is integrally set at the bottom of the adjusting rod 2. The rotating rod 8 is set as a round rod structure.

[0030] like Figure 2 - Figure 4 As shown, during use, when the adjusting rod 2 is rotated, the rectangular structure on its upper part drives the circular plate 3 on the inner side of the fixed seat 1 to rotate synchronously. The arc-shaped guide groove 4 opened at equal angles on the circular plate 3 rotates with the circular plate 3, forcing the cylinder 5, which is slidably connected in the guide groove 4, to move along the trajectory of the guide groove 4. The bottom of the cylinder 5 is slidably connected in the rectangular limiting groove 6 at the bottom of the fixed seat 1. The guiding of the arc-shaped guide groove 4 and the constraint of the rectangular limiting groove 6 work together to make the cylinder 5 drive the pull claw 7 to open or close synchronously in the radial direction. The barbed structure at the bottom of the pull claw 7 can firmly hook the edge of the bearing to ensure that it does not slip when pulling. Moreover, the three claws are distributed at equal angles to ensure that the bearing is subjected to uniform force and avoids deformation due to uneven load. Example

[0031] Based on Embodiment 2, an automatic oil supply to key components is also disclosed to reduce frictional loss and drive the resisting and pulling actions, as described in the reference. Figure 4 - Figure 6 As shown, its specific structure is as follows: The rotating rod 8 is connected through the top of the screw 11, and the screw 11 is rotatably connected to the middle of the bottom surface of the fixed base 1. A protrusion 9 is fixed on the outer side of the bottom of the rotating rod 8. The protrusion 9 is slidably connected in the spiral groove 10. The spiral groove 10 is opened on the inner wall of the screw 11. The rotating rod 8 drives the screw 11 to form a rotating structure through the protrusion 9 and the spiral groove 10. The outer side of the screw 11 is threadedly connected to the abutment post 12. The abutment post 12 forms a vertical sliding structure through the screw 11 and the limiting rod 13. After the lubricating oil is injected, it is located between the abutment post 12 and the screw 11.

[0032] refer to Figure 4 - Figure 6As shown, during use, the pressure plate 14 on the outer side of the top of the adjusting rod 2 moves up and down with the rotation of the adjusting rod 2. When the pressure plate 14 descends, it squeezes the oil bladder 15 on the top of the fixed seat 1. The lubricating oil in the oil bladder 15 is forced out through the lubrication pipe 16. The lubrication pipe 16 is divided into two paths: one path leads to the inner middle of the pull claw 7 to reduce the friction between the pull claw 7 and the bearing edge during pulling; the other path leads into the interior of the abutment post 12 and finally seeps into the threaded connection between the abutment post 12 and the screw 11 to reduce the thread transmission resistance. When the pressure plate 14 rises, the oil bladder 15 resets under its own elasticity and is replenished by drawing oil from the outside, realizing the cycle of "use-oil supply-reset-oil replenishment". Self-lubrication requires no manual intervention. The rotating rod 8 at the bottom of the adjusting rod 2 is a round rod structure. The protrusion 9 on the side is slidably connected to the spiral groove 10 on the inner wall of the screw 11. When the adjusting rod 2 rotates, the protrusion 9 slides along the spiral groove 10, causing the screw 11 to rotate in the middle of the bottom surface of the fixed seat 1. The screw 11 and the abutment post 12 are connected by threads, and the abutment post 12 is constrained by the limiting rod 13 and can only slide vertically. When the screw 11 rotates, the abutment post 12 rises and falls in the vertical direction. When it falls, it presses against the shaft diameter at the center of the bearing and provides reverse support force. When it rises, it disengages from the contact, making it easy to pick up and put down the bearing. After the abutment post 12 presses against the shaft diameter, the adjusting rod 2 continues to rotate, and the guide component drives the puller 7 to retract and hook the bearing. At this time, the rotation of the adjusting rod 2 is converted into the upward pulling force of the puller 7. With the reverse support of the abutment post 12, the bearing is smoothly pulled out from the shaft diameter.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-lubricating bearing puller, comprising a fixed seat (1), wherein an adjusting rod (2) is connected through the middle of the fixed seat (1), and a puller claw (7) is slidably connected at an equal angle to the bottom of the fixed seat (1) and abutting the edge of the bearing, and an abutting post (12) is provided in the middle of the bottom surface of the fixed seat (1) and abutting the center of the bearing. Its features are: The fixed seat (1) is provided with a guide component inside, and the guide component drives the puller claw (7) to stably grip the bearing. The top of the fixed seat (1) is provided with an oil bladder (15), and the top outer side of the adjusting rod (2) is provided with a pressure plate (14). The pressure plate (14) and the oil bladder (15) are pressed together. The oil bladder (15) is connected to the lubrication pipe (16). The lubrication pipe (16) is distributed in the middle of the inner side of the puller claw (7) and inside the contact post (12).

2. The self-lubricating bearing puller according to claim 1, characterized in that: The guiding component includes a circular plate (3) rotatably connected to the middle of the inner side of the fixed base (1). A guide groove (4) is provided through the circular plate (3) at equal angles. The guide groove (4) is set as an arc structure. A cylinder (5) is slidably connected in the guide groove (4). The bottom of the cylinder (5) is slidably connected in a limiting groove (6). The limiting groove (6) is set as a rectangular structure. The limiting groove (6) is opened at equal angles at the bottom of the fixed base (1).

3. The self-lubricating bearing puller according to claim 2, characterized in that: The bottom of the cylinder (5) is fixedly connected to a puller (7), which is set as an "L" shaped structure and the bottom of the puller (7) is set as a barb-shaped structure.

4. A self-lubricating bearing puller according to claim 3, characterized in that: The upper part of the adjusting rod (2) is set as a rectangular structure, and the through-hole of the adjusting rod (2) with the circular plate (3) and the fixed seat (1) is set as a rectangular structure. The bottom of the adjusting rod (2) is integrally provided with a rotating rod (8), which is set as a round rod structure.

5. A self-lubricating bearing puller according to claim 4, characterized in that: The rotating rod (8) is connected through the top of the screw (11), and the screw (11) is rotatably connected to the middle of the bottom surface of the fixed seat (1). A protrusion (9) is fixed on the outer side of the bottom of the rotating rod (8), and the protrusion (9) is slidably connected in the spiral groove (10). The spiral groove (10) is opened on the inner wall of the screw (11).

6. A self-lubricating bearing puller according to claim 5, characterized in that: The rotating rod (8) drives the screw (11) to form a rotating structure through the protrusion (9) and the spiral groove (10). The outer side of the screw (11) is threaded with an abutment post (12).

7. A self-lubricating bearing puller according to claim 6, characterized in that: The abutment post (12) forms a vertical sliding structure through the screw (11) and the limiting rod (13), and the lubricating oil is located between the abutment post (12) and the screw (11) after being injected.

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