Drawing device for automobile maintenance

Abstract

The utility model discloses an automobile maintenance puller which comprises a lead screw, a lead screw seat, cross beams and pulling claws, at least two cross beams are connected to the lead screw seat, a sliding groove is formed in the upper surface of a hook claw of each pulling claw, an extending claw perpendicular to the lead screw is connected in the sliding groove in a sliding mode, and an arc-shaped inner pulling plate is arranged at the end, close to the lead screw, of each extending claw. An inserting rod is arranged at the lower end of the lead screw, the surface of the inserting rod is movably sleeved with a widened supporting base supported at the bottom of the lead screw, a magnetic block used for magnetically adsorbing the inserting rod is embedded in the widened supporting base, the bottom of the widened supporting base is rotationally connected with a widened base, and an anti-skid wear-resistant rubber mat is arranged at the bottom of the widened base. Through the arrangement of the widened supporting seat, the widened base, the anti-skid wear-resistant rubber mat and the telescopic extension claws on the pull claws, the inner ring and the outer ring of the bearing are stressed simultaneously and equally during drawing, and damage caused by reduction of the matching degree after disassembly due to dislocation of the inner ring and the outer ring is avoided; the bearing puller solves the problem that when an existing bearing puller for automobile repair is used, a shaft and a bearing are insufficiently protected.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile repair tools, in particular to an automobile repair puller. Background Art

[0002] A puller is a commonly used auto repair tool, often used to remove annular parts installed on straight rods and shafts. The most common one is the removal of bearings on the shaft, for which a puller is indispensable.

[0003] The working principle of the puller used for auto repair is the same. The bearing is hooked by the pull claw, and the middle screw rod is continuously advanced to the end of the support shaft, and the bearing is removed by relative movement. However, almost all existing pullers have a common problem, that is, the protection of the parts in the auto repair part is insufficient. For example, when the screw rod is advanced to the end of the support shaft, the rotation of the screw rod will scratch the appearance of the end of the shaft, especially some screw rods have conical protrusions at the end. In addition, most of the current pull claws can only hook the outer ring of the bearing, especially the larger bearings, while the inner ring of the bearing is tightly clamped on the shaft. When the outer ring of the bearing is pulled outward, it is easy to cause the inner ring, ball and outer ring of the bearing to seriously reduce the fit, resulting in damage to the bearing that originally rotated smoothly, which is insufficient. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an automobile maintenance puller, which is used to solve the problem that the existing automobile maintenance bearing puller does not provide sufficient protection for the shaft and the bearing when in use.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A car maintenance puller, comprising a screw, a screw seat, a crossbeam and a pull claw, wherein the screw seat is threadedly connected to the surface of the screw, the crossbeam is fixedly connected to the surface of the screw seat, the pull claw is slidably connected to the surface of the crossbeam, at least two crossbeams are connected to the screw seat, a sliding groove is provided on the upper surface of the hook of the pull claw, an extension claw perpendicular to the screw is slidably connected in the sliding groove, and an arc-shaped inner pull plate is provided at one end of the extension claw close to the screw;

[0007] An insertion rod is provided at the lower end of the screw rod, and a widened support seat supported at the bottom of the screw rod is movably sleeved on the surface of the insertion rod, a magnetic block for magnetically adsorbing the insertion rod is embedded in the widened support seat, and a widened base is rotatably connected to the bottom of the widened support seat, and a non-slip and wear-resistant rubber pad is provided at the bottom of the widened base.

[0008] Preferably, the top end of the screw rod is vertically fixedly connected with a sleeve, the top end of the sleeve is fixedly connected with an external hexagonal connecting column, and the top end of the external hexagonal connecting column is provided with an internal hexagonal slot.

[0009] Preferably, an oblique tie rod located above the cross beam is fixedly connected to the screw seat, and one end of the oblique tie rod away from the screw seat is fixedly connected to one end of the cross beam away from the screw seat.

[0010] Preferably, an external support spring is horizontally mounted on the surface of one end of the cross beam away from the screw seat, and the external support spring is supported on the side of the pulling claw away from the screw seat.

[0011] Preferably, a protrusion is provided at the bottom of the extending claw, and a clearance groove corresponding to the protrusion is provided at the bottom of the inner wall of the sliding groove of the pulling claw, and an internal support spring is horizontally installed in the clearance groove, and the internal support spring is installed on the side of the protrusion away from the screw rod.

[0012] Preferably, a hand-pulling groove is provided on the upper surface of the extending claw at a position away from the arc-shaped inner pulling plate, and the upper surface of the hook claw of the pulling claw and the upper surface of the extending claw are located in the same plane.

[0013] Preferably, an arc-shaped outer pull plate is provided at one end of the hook of the pull claw close to the arc-shaped inner pull plate.

[0014] Preferably, the arc-shaped inner pull plate and the arc-shaped outer pull plate have the same curvature, and the arc centers of the arc-shaped inner pull plate and the arc-shaped outer pull plate are both located on the side of the arc-shaped inner pull plate away from the pulling claw.

[0015] Preferably, the bottom of the anti-skid and wear-resistant rubber pad is provided with anti-skid raised stripes.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides a widened support seat, a widened base and an anti-skid and wear-resistant rubber pad. When the screw rod rotates, the widened support seat, the widened base and the anti-skid and wear-resistant rubber pad increase the contact area with the end of the shaft, reduce local pressure, and the widened support seat and the widened base rotate relatively, so that the widened base and the anti-skid and wear-resistant rubber pad remain stationary with the shaft, and the flexible anti-skid and wear-resistant rubber pad avoids rigid contact extrusion with the shaft and scratches caused by rotational friction, thereby protecting the shaft.

[0018] The utility model provides a retractable extension claw on the pulling claw. When the bearing on the shaft is pulled, the bottom of the inner ring and the outer ring of the bearing are supported by the pulling claw and the extension claw. A larger bearing can also support the inner ring of the bearing by extending the extension claw, so that the inner ring and the outer ring of the bearing are subjected to force simultaneously and equally during pulling, avoiding misalignment of the two and resulting in a decrease in fit after disassembly and causing damage, thereby protecting the disassembled bearing and solving the problem of insufficient protection of the shaft and the bearing when the existing bearing puller for automobile repair is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the front view of the utility model;

[0020] Figure 2 This is a top view of the external hexagonal connecting column and sleeve of the utility model;

[0021] Figure 3 It is a top view cross-sectional view of the crossbeam and the pull claw of the utility model;

[0022] Figure 4 It is a side cross-sectional view of the pull claw and the cross beam of the utility model;

[0023] Figure 5 This is a front cross-sectional view of the pull claw and the extension claw of the utility model;

[0024] Figure 6 It is a top view of the pulling claw and the extending claw of the utility model;

[0025] Figure 7 This is a cross-sectional view of the corresponding position of the widened support seat of the utility model.

[0026] In the figure: 1. screw rod; 101. plug rod; 102. sleeve; 103. external hexagonal connecting column; 104. internal hexagonal slot; 2. screw rod seat; 3. crossbeam; 4. pull claw; 401. slide groove; 402. give way groove; 403. arc-shaped outer pull plate; 5. extension claw; 501. arc-shaped inner pull plate; 502. bump; 503. hand pull groove; 6. widened support seat; 601. magnetic block; 7. widened base; 8. anti-skid and wear-resistant rubber pad; 9. inclined pull rod; 10. outer support spring; 11. inner support spring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-6 As shown, the utility model provides a technical solution: a car maintenance puller, comprising a screw rod 1, a screw rod seat 2, a crossbeam 3 and a pulling claw 4, the top of the screw rod 1 is vertically fixedly connected with a sleeve 102, and the screw rod 1 can be rotated by inserting a lever, the top of the sleeve 102 is fixedly connected with an outer hexagonal connecting column 103, and the screw rod 1 can be driven to rotate by a socket wrench, the top of the outer hexagonal connecting column 103 is provided with an inner hexagonal slot 104, and the screw rod 1 can be driven to rotate by an inner hexagonal wrench, and the bottom of the anti-skid and wear-resistant rubber pad 8 is provided with anti-skid raised stripes, which enhances stability during pulling and avoids shaking between the screw rod 1 and the supporting shaft, which is not conducive to operation;

[0029] The screw seat 2 is threadedly connected to the surface of the screw 1, the cross beam 3 is fixedly connected to the surface of the screw seat 2, the pull claw 4 is slidably connected to the surface of the cross beam 3, at least two cross beams 3 are connected to the screw seat 2, and the screw seat 2 is fixedly connected to an inclined rod 9 located above the cross beam 3 to enhance the structural strength of the cross beam 3, and one end of the inclined rod 9 away from the screw seat 2 is fixedly connected to the other end of the cross beam 3 away from the screw seat 2;

[0030] An external support spring 10 is horizontally installed on the surface of one end of the crossbeam 3 away from the screw seat 2. The external support spring 10 is supported on the side of the pull claw 4 away from the screw seat 2. The external support spring 10 supports the pull claw 4 to approach the bearing to be disassembled, so as to facilitate the clamping under the bearing;

[0031] A slide groove 401 is provided on the upper surface of the hook of the pull claw 4, and an extension claw 5 perpendicular to the screw rod 1 is slidably connected in the slide groove 401, and an arc-shaped inner pull plate 501 is provided at one end of the extension claw 5 close to the screw rod 1, and a protrusion 502 is provided at the bottom of the extension claw 5. A clearance groove 402 corresponding to the protrusion 502 is provided at the bottom of the inner wall of the slide groove 401 of the pull claw 4, and an inner support spring 11 is horizontally installed in the clearance groove 402. The inner support spring 11 is installed on the side of the protrusion 502 away from the screw rod 1, and the inner support spring 11 supports the extension claw 5 to approach the bearing to be disassembled, so as to be conveniently stuck under the inner ring of the bearing;

[0032] An arc-shaped outer pull plate 403 is provided at one end of the hook of the pull claw 4 close to the arc-shaped inner pull plate 501 to increase the contact area with the bearing and avoid the inner and outer rings of the bearing from being misaligned during pulling. A hand-pulling groove 503 is provided at a position on the upper surface of the extension claw 5 away from the arc-shaped inner pull plate 501. The upper surface of the hook of the pull claw 4 and the upper surface of the extension claw 5 are located in the same plane, so as to simultaneously pull the inner and outer rings of the bearing. The arcs of the arc-shaped inner pull plate 501 and the arc-shaped outer pull plate 403 are the same, and the arc centers corresponding to the arc-shaped inner pull plate 501 and the arc-shaped outer pull plate 403 are both located on the side of the arc-shaped inner pull plate 501 away from the pull claw 4.

[0033] A plug rod 101 is provided at the lower end of the screw rod 1, and a widened support seat 6 supported at the bottom of the screw rod 1 is movably sleeved on the surface of the plug rod 101. A magnetic block 601 for magnetically adsorbing the plug rod 101 is embedded in the widened support seat 6. According to the diameter of the shaft, different sizes of widened support seats 6 and widened bases 7 are replaced and installed. The widened support seat 6 and the widened base 7 have a diameter larger than that of the screw rod 1, which increases the contact area with the shaft and reduces local pressure. The bottom of the widened support seat 6 is rotatably connected to the widened base 7, and the bottom of the widened base 7 is provided with an anti-slip and wear-resistant rubber pad 8.

[0034] Working principle: Pull the extension claws 5 to both sides, the inner support spring 11 and the outer support spring 10 contract, and move the arc-shaped inner pull plates 501 of the two extension claws 5 to the bottom of the bearing to be removed on the shaft. The inner support spring 11 and the outer support spring 10 support the two groups of extension claws 5 and the pull claws 4 to be close to each other, and the arc-shaped outer pull plate 403 and the arc-shaped inner pull plate 501 are stuck under the bearing at the same time, ensuring that the arc-shaped inner pull plate 501 is stuck under the inner ring of the bearing, and the screw rod 1 is rotated. The widened support seat 6, the widened base 7 and the anti-slip and wear-resistant rubber pad 8 at the lower end of the screw rod 1 are supported on the end of the shaft corresponding to the bearing, and the widened base 7 and the anti-slip and wear-resistant rubber pad 8 remain stationary with the shaft, and the screw rod 1 continuously advances the end of the support shaft, so that the pull claws 4 and the extension claws 5 simultaneously pull the inner and outer rings of the bearing to remove the bearing.

[0035] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile maintenance puller, comprising a screw (1), a screw seat (2), a crossbeam (3) and a pull claw (4), wherein the screw seat (2) is threadedly connected to the surface of the screw (1), the crossbeam (3) is fixedly connected to the surface of the screw seat (2), and the pull claw (4) is slidably connected to the surface of the crossbeam (3), characterized in that: At least two crossbeams (3) are connected to the screw seat (2); a sliding groove (401) is provided on the upper surface of the hook of the pulling claw (4); an extension claw (5) perpendicular to the screw (1) is slidably connected in the sliding groove (401); an arc-shaped inner pulling plate (501) is provided at one end of the extension claw (5) close to the screw (1); The lower end of the screw rod (1) is provided with an insertion rod (101), the surface of the insertion rod (101) is movably sleeved with a widened support seat (6) supported at the bottom of the screw rod (1), a magnetic block (601) for magnetically adsorbing the insertion rod (101) is embedded in the widened support seat (6), the bottom of the widened support seat (6) is rotatably connected to a widened base (7), and the bottom of the widened base (7) is provided with an anti-skid and wear-resistant rubber pad (8).

2. The automobile maintenance puller according to claim 1, characterized in that: The top end of the screw rod (1) is vertically fixedly connected to a sleeve (102), the top end of the sleeve (102) is fixedly connected to an external hexagonal connecting column (103), and the top end of the external hexagonal connecting column (103) is provided with an internal hexagonal slot (104).

3. The automobile maintenance puller according to claim 1, characterized in that: The screw seat (2) is fixedly connected to an inclined rod (9) located above the cross beam (3); one end of the inclined rod (9) away from the screw seat (2) is fixedly connected to one end of the cross beam (3) away from the screw seat (2).

4. The automobile repair puller according to claim 1, characterized in that: An external support spring (10) is horizontally mounted on the surface of one end of the crossbeam (3) away from the screw seat (2), and the external support spring (10) is supported on the side of the pulling claw (4) away from the screw seat (2).

5. The automobile repair puller according to claim 1, characterized in that: A protrusion (502) is provided at the bottom of the extension claw (5), and a clearance groove (402) corresponding to the protrusion (502) is provided at the bottom of the inner wall of the slide groove (401) of the pulling claw (4), and an inner support spring (11) is horizontally installed in the clearance groove (402), and the inner support spring (11) is installed on the side of the protrusion (502) away from the screw rod (1).

6. The automobile repair puller according to claim 1, characterized in that: A hand-pulling groove (503) is provided on the upper surface of the extending claw (5) at a position away from the arc-shaped inner pulling plate (501), and the upper surface of the hook claw of the pulling claw (4) and the upper surface of the extending claw (5) are located on the same plane.

7. The automobile repair puller according to claim 1, characterized in that: An arc-shaped outer pull plate (403) is provided at one end of the hook of the pull claw (4) close to the arc-shaped inner pull plate (501).

8. The automobile repair puller according to claim 7, characterized in that: The arc-shaped inner pull plate (501) and the arc-shaped outer pull plate (403) have the same arc, and the arc centers of the arc-shaped inner pull plate (501) and the arc-shaped outer pull plate (403) are both located on the side of the arc-shaped inner pull plate (501) away from the pull claw (4).

9. The automobile repair puller according to claim 1, characterized in that: The bottom of the anti-skid and wear-resistant rubber pad (8) is provided with anti-skid raised stripes.

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