Oil pump bearing dismounting device

Abstract

The utility model relates to an oil pump bearing dismounting device, which belongs to the technical field of oil pump maintenance tools and is characterized in that a plurality of groups of pull rods are uniformly hinged to the outer side of a nut seat, and claws for grabbing bearings are arranged on the pull rods; the nut seat is provided with a central ejector rod which is spirally matched with the nut seat; a lengthening rod is movably clamped in the central ejector rod; a rotating handle is arranged at the top end of the lengthening rod. The clamping jaws can be hinged to multiple positions on the pull rod so that different structural lengths can be adjusted, the length of the center ejector rod is increased through the lengthening rod, the device can conveniently extend out of the external space to be operated, and then the convenience degree of operation is improved.

Description

Technical Field

[0001] This utility model relates to an oil pump bearing disassembly device, belonging to the technical field of oil pump maintenance tools. Background Technology

[0002] Conventionally, power transformers use a forced oil circulation cooling system for heat dissipation, and the oil pump is a key component of this system. After prolonged operation, bearing wear inevitably occurs in the oil pump. The metal shavings produced by this wear can easily enter the transformer, posing a safety hazard, necessitating bearing replacement. Traditional bearing pullers are typically used for replacement. These pullers have fixed lengths for their rotating rods and jaws. When facing the confined space of the pump chamber, the puller can only operate slowly within the chamber, limiting its rotational range and making bearing removal extremely inconvenient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an oil pump bearing disassembly device, so as to obtain a larger operating space during bearing disassembly and improve the flexibility of bearing disassembly operation.

[0004] This utility model discloses an oil pump bearing disassembly device, comprising: several sets of pull rods evenly hinged to the outer side of a nut seat, the pull rods being provided with claws for gripping the bearing; a central push rod that is helically engaged with the nut seat; an extension rod being movably secured inside the central push rod; and a rotating handle being provided at the top of the extension rod.

[0005] Furthermore, the central top rod is hollow, and the extension rod is sleeved inside the central top rod. The inner wall of the central top rod is provided with a long groove and a short groove for holding the extension rod. The top of the long groove and the top of the short groove are connected. A transition slope is provided on the side of the connection between the long groove and the short groove near the opening of the central top rod. An overrun groove is provided on the transition slope.

[0006] Furthermore, the extension rod is provided with a spring hole, inside which a spring and a positioning post are provided. The spring is elastically supported at one end of the positioning post, and the other end of the positioning post protrudes from the outer wall of the extension rod. The positioning post can be slidably connected in the long slot and the short slot.

[0007] Furthermore, the spring hole includes a pair of coaxially arranged movable holes, a locking cavity is provided between the two movable holes, the spring is set in the locking cavity, and a sliding groove is provided on the inner wall of the movable hole;

[0008] The side of the positioning post has a protrusion that matches the sliding groove.

[0009] Furthermore, the pull rod is provided with several connection holes, and a permanent magnet for attracting the claw is embedded on one side of the pull rod; the claw is hinged to the pull rod through the connection holes.

[0010] Furthermore, one end of the claw is equipped with a gripping block, and the gripping block has anti-slip texture.

[0011] The advantages of this utility model compared with the prior art are:

[0012] The claws can be hinged at multiple positions on the pull rod to adjust to different structural lengths. The extension rod increases the length of the central top rod, making it easier to extend the device into the external space for operation, thereby improving the convenience of operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an oil pump bearing disassembly device according to this utility model;

[0014] Figure 2 This is a schematic diagram of the extended state structure of an oil pump bearing disassembly device according to this utility model;

[0015] Figure 3 This is a schematic diagram of the central push rod structure of an oil pump bearing disassembly device according to this utility model;

[0016] Figure 4 This is a schematic diagram of the extended rod structure of an oil pump bearing disassembly device according to this utility model;

[0017] Figure 5 This is a schematic diagram of the spring hole structure of an oil pump bearing disassembly device according to this utility model.

[0018] In the picture:

[0019] 1. Turn the handle;

[0020] 2. Extension rod; 201. Positioning pin; 2011. Protrusion; 202. Spring; 203. Spring hole; 2031. Movable hole; 2032. Locking cavity; 2033. Slide groove;

[0021] 3. Center top rod; 301. Long groove; 302. Transition slope; 3021. Overrun groove; 303. Short groove;

[0022] 4. Nut seat;

[0023] 5. Pull rod; 501. Connecting hole; 502. Permanent magnet;

[0024] 6. Claws; 601. Gripping block; 602. Anti-slip texture. Detailed Implementation

[0025] like Figures 1-5As shown, this embodiment is achieved through the following technical solution: several sets of pull rods 5 are evenly hinged on the outer side of the nut seat 4, and the pull rods 5 are provided with claws 6 for gripping the bearing; the nut seat 4 is provided with a central push rod 3 that is helically engaged with it; an extension rod 2 is movably locked inside the central push rod 3; and a rotating handle 1 is provided at the top of the extension rod 2.

[0026] Specifically, the central top rod 3 is hollow, and the extension rod 2 is sleeved inside the central top rod 3. The inner wall of the central top rod 3 is provided with a long groove 301 and a short groove 303 for holding the extension rod 2. The top end of the long groove 301 and the top end of the short groove 303 are connected. A transition slope 302 is provided on the side of the connection between the long groove 301 and the short groove 303 near the opening of the central top rod 3. An overrun groove 3021 is provided on the transition slope 302.

[0027] Specifically, the extension rod 2 is provided with a spring hole 203, and a spring 202 and a positioning post 201 are provided inside the spring hole 203. The spring 202 is elastically supported on one end of the positioning post 201, and the other end of the positioning post 201 protrudes from the outer wall of the extension rod 2. The positioning post 201 can be axially slidably connected in the long groove 301 and the short groove 303. The positioning post 201 is circumferentially constrained by the long groove 301 and the short groove 303, so that the extension rod 2 can drive the central top rod 3 to rotate synchronously.

[0028] In this embodiment, when the extension rod 2 is lifted upwards, the positioning post 201 passes over the junction of the long groove 301 and the short groove 303 and reaches the transition slope 302. Further, one end of the positioning post 201 is caught by the overstepping groove 3021, generating a slight vibration. This vibration is transmitted to the extension rod 2 and the rotating handle 1. At this time, the operator selects the next operation based on the vibration signal: continue to lift the extension rod 2 upwards, and the extension rod 2 is taken out from the central top rod 3, or rotate the extension rod 2 and press down to make the positioning post 201 switch between the long groove 301 and the short groove 303.

[0029] Specifically, the spring hole 203 includes a pair of coaxially arranged movable holes 2031, a locking cavity 2032 is provided between the two movable holes 2031, the spring 202 is disposed in the locking cavity 2032, and a sliding groove 2033 is provided on the inner wall of the movable hole 2031; the positioning post 201 has a protrusion 2011 on its side that cooperates with the sliding groove 2033.

[0030] In this embodiment, the diameter of the card release cavity 2032 is larger than the diameter of the movable hole 2031, and a step is formed at the junction of the card release cavity 2032 and the movable hole 2031, such as... Figure 5 As shown; in use, the protrusion 2011 of the positioning post 201 passes through the slide groove 2033, and the entire protrusion 2011 enters the locking cavity 2032. Rotating the positioning post 201 causes the protrusion 2011 to be blocked by the aforementioned step, at which point the positioning post 201 is locked into the locking cavity 2032, as shown. Figure 4 As shown.

[0031] Specifically, the pull rod 5 is provided with several connection holes 501, and a permanent magnet 502 for attracting the claw 6 is embedded on one side of the pull rod 5; the claw 6 is hinged to the pull rod 5 through the connection holes 501.

[0032] Specifically, one end of the claw 6 is provided with a gripping block 601, and the gripping block 601 is provided with anti-slip texture 602.

[0033] The specific working principle of this utility model is as follows:

[0034] One end of the center push rod 3 presses against the center hole on the end face of the spindle, and the gripping block 601 of the chuck 6 grips the edge of the bearing. As the extension rod 2 and the center push rod 3 rotate, the nut seat 4 drives the chuck 6 to move axially relative to the center push rod 3 until the chuck 6 drives the bearing to disengage from the spindle and stops.

[0035] When the positioning post 201 is engaged in the long slot 301, the extension rod 2 is in a retracted state and can be used in a regular operating space. When used in a confined space, first adjust the hinge position of the pawl 6 on the pull rod 5 to increase the protruding length of the pawl 6. Then, the positioning post 201 is engaged in the short slot 303, and the extension rod 2 protrudes further from the central top rod 3, so that the extension rod 2 can extend out of the confined space. The rotating handle 1 also gains more operating space in the outside, making it easier for people to rotate the central top rod 3.

[0036] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. A device for disassembling an oil pump bearing, characterized in that, Includes a nut seat (4), with several sets of pull rods (5) evenly hinged on the outside of the nut seat (4), and the pull rods (5) are provided with claws (6) for gripping the bearing; the nut seat (4) is provided with a central push rod (3) that is helically engaged with it; an extension rod (2) is movably locked inside the central push rod (3); and a rotating handle (1) is provided at the top of the extension rod (2).

2. The oil pump bearing disassembly device according to claim 1, characterized in that, The central top rod (3) is hollow, and the extension rod (2) is sleeved inside the central top rod (3). The inner wall of the central top rod (3) is provided with a long groove (301) and a short groove (303) for holding the extension rod (2). The top end of the long groove (301) and the top end of the short groove (303) are connected. A transition slope (302) is provided on the side of the connection between the long groove (301) and the short groove (303) near the opening of the central top rod (3). An overrun groove (3021) is provided on the transition slope (302).

3. The oil pump bearing disassembly device according to claim 1, characterized in that, The extension rod (2) is provided with a spring hole (203). Inside the spring hole (203) are a spring (202) and a positioning post (201). The spring (202) is elastically supported on one end of the positioning post (201), and the other end of the positioning post (201) protrudes from the outer wall of the extension rod (2). The positioning post (201) is slidably connected in the long groove (301) and the short groove (303).

4. The oil pump bearing disassembly device according to claim 3, characterized in that, The spring hole (203) includes a pair of coaxially arranged movable holes (2031), a locking cavity (2032) is provided between the two movable holes (2031), the spring (202) is disposed in the locking cavity (2032), and a sliding groove (2033) is provided on the inner wall of the movable hole (2031); The side of the positioning post (201) is provided with a protrusion (2011) that cooperates with the slide groove (2033).

5. The oil pump bearing disassembly device according to claim 1, characterized in that, The pull rod (5) has several connecting holes (501), and a permanent magnet (502) for attracting the claw (6) is embedded on one side of the pull rod (5); the claw (6) is hinged to the pull rod (5) through the connecting holes (501).

6. The oil pump bearing disassembly device according to claim 1, characterized in that, One end of the claw (6) is provided with a gripping block (601), and the gripping block (601) is provided with anti-slip texture (602).

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