Bearing puller

Abstract

The bearing drawing device comprises a screw rod, a first screw rod and a second screw rod, the screw rod extends along a first direction, and threads are arranged on the peripheral surface of the screw rod; the support is of an annular structure, the support is arranged on the peripheral side of the screw in a sleeving mode, and the screw is in threaded connection with the support; the pull rods have a first preset size in the first direction, the pull rods are connected with the support, the pull rods are arranged at intervals in the circumferential direction, and the pull rods can move relative to the support; the plurality of draw hooks are connected with the plurality of pull rods in a one-to-one correspondence manner, the draw hooks have a second preset size in the radial direction of the screw rod, included angles are formed between the pull rods and the draw hooks, and the draw hooks can move in the radial direction of the screw rod relative to the pull rods connected with the draw hooks. Therefore, the bearing puller disclosed by the utility model has the advantages that the bearing is convenient to disassemble, and the damage to the outer ring of the bearing can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pullers, in particular to a bearing puller. Background Art

[0002] Since the bearings on the equipment workpiece or product are installed in an interference fit and are blocked by the housing or various connected parts, it is extremely difficult to disassemble them, so a bearing puller is often used to remove the bearings. In the related technology, the bearing puller needs to use the top screw hole to disassemble the bearing. Some products have no top screw holes on the end faces, so they can only use the end faces as support. When the end face diameter of some shaft structures is small and the aspect ratio is large, the product cannot use the small end face as support, which is easy to deform, and the deformation affects the normal use of the shaft; therefore, sufficient disassembly space is required for bearing disassembly, and some shaft structures are compact and cannot be effectively disassembled. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model provides a bearing puller.

[0004] The bearing puller of the utility model embodiment comprises:

[0005] A screw rod, the screw rod extends along a first direction, and a thread is provided on an outer peripheral surface of the screw rod;

[0006] A bracket, the bracket is an annular structure, the bracket is sleeved around the screw rod, and the screw rod is threadedly connected to the bracket;

[0007] A plurality of tie rods, each of which has a first preset size in the first direction, is connected to the bracket, is spaced apart along the circumferential direction, and is movable relative to the bracket;

[0008] A plurality of hooks are connected to the plurality of pull rods one by one, the hooks have a second preset size in the radial direction of the screw, the pull rods form an angle with the hooks, and the hooks can move in the radial direction of the screw relative to the pull rods connected thereto.

[0009] Therefore, the bearing puller according to the embodiment of the utility model has the advantages of facilitating the disassembly of the bearing and reducing the damage to the outer ring of the bearing.

[0010] The bearing puller of the embodiment of the utility model comprises a plurality of connecting plates, which are arranged on the bracket at intervals along the circumferential direction, one end of the connecting plate is hinged to the bracket, and the other end of the connecting plate is hinged to the pull rod, and the extension direction of the rotation axis at both ends of the connecting plate is consistent with the radial direction of the screw rod.

[0011] In some embodiments, each of the pull rods is connected to a connecting plate on both sides in the circumferential direction, and the pull rods are connected to the connecting plates via bolts and nuts.

[0012] In some embodiments, there are three tie rods, and the angle between two adjacent tie rods in the circumferential direction is 120°.

[0013] The bearing puller of the embodiment of the utility model includes a rotating shaft, the first end of the screw is located between the drawing hook and the bracket in the first direction, the second end of the screw is provided with a pin hole, the pin hole and the rotating shaft both extend along the radial direction of the screw, and the rotating shaft can be extended into the pin hole to rotate the screw.

[0014] In some embodiments, the first end of the screw rod is provided with a first avoidance hole extending along the first direction.

[0015] In some embodiments, the first end of the screw rod is provided with a base, the base has a second avoidance hole penetrating therethrough along a first direction, and the base is movable relative to the screw rod.

[0016] In some embodiments, a gasket is provided in the base;

[0017] The base can rotate relative to the screw;

[0018] Alternatively, the base is threadedly connected to the screw rod, and when the screw rod rotates, the base and the bracket move toward each other or away from each other in the first direction.

[0019] In some embodiments, a threaded hole is provided at one end of the pull rod away from the bracket, the threaded hole penetrates the pull rod along the radial direction of the screw rod, and the hook is threadedly connected to the threaded hole;

[0020] The draw hook is provided with two nuts threadedly connected thereto, and the two nuts are located on both sides of the draw rod in the radial direction of the screw rod.

[0021] In some embodiments, the hook includes a first section and a second section connected in a radial direction of the screw, the first section is located on a side of the second section adjacent to the screw in the radial direction of the screw, and a diameter of the first section is smaller than a diameter of the second section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a bearing puller according to an embodiment of the utility model.

[0023] Figure 2 It is a cross-sectional view of a bearing puller according to an embodiment of the utility model.

[0024] Figure 3 It is a working schematic diagram of a bearing puller according to an embodiment of the utility model.

[0025] Figure numerals: 1. screw, 11. first end, 12. second end, 13. first avoidance hole, 14. pin hole, 2. bracket, 3. pull rod, 4. hook, 41. first section, 42. second section, 5. connecting plate, 6. rotating shaft, 7. base, 71. second avoidance hole, 8. gasket. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0027] The bearing puller of the utility model embodiment is described below with reference to the accompanying drawings. Figures 1 to 3 As shown, the bearing puller according to the embodiment of the utility model comprises a screw rod 1, a bracket 2, a plurality of pull rods 3 and a plurality of pull hooks 4.

[0028] The screw 1 extends along a first direction, and a thread is provided on the outer circumference of the screw 1. The first direction may be an up-down direction. For example, the screw 1 extends along an up-down direction.

[0029] The bracket 2 is an annular structure, and the bracket 2 is sleeved on the side of the screw rod 1. The screw rod 1 is threadedly connected to the bracket 2. Therefore, when the screw rod 1 rotates relative to the bracket 2, the bracket 2 can move relative to the screw rod 1 in the first direction. For example, the bracket 2 can rotate relative to the screw rod 1 and move in the up and down direction. The screw rod 1 thread is larger than M16.

[0030] The pull rod 3 has a first preset size in the first direction, is connected to the bracket 2, and a plurality of pull rods 3 are arranged at intervals along the circumferential direction, and the pull rod 3 can move relative to the bracket 2. For example, the pull rod 3 can rotate relative to the bracket 2.

[0031] A plurality of hooks 4 are connected to a plurality of rods 3 in a one-to-one correspondence, and the hooks 4 have a second preset size in the radial direction of the screw 1. The rods 3 and the hooks 4 form an angle, and the hooks 4 can move relative to the rods 3 connected thereto in the radial direction of the screw 1. Therefore, when the plurality of hooks 4 are hung at the bottom of the bearing, the position of the bracket 2 in the first direction (up and down direction) can be adjusted by rotating the screw 1, so that the hooks 4 can drive the bearing to move in the first direction, thereby facilitating the removal of the bearing on the shaft. By changing the position of the hooks 4 on the rods 3 (in the radial direction of the screw 1), the contact size of the hooks 4 with the bearing in the radial direction of the screw 1 can be adjusted, so that the hooks 4 can abut against both the outer ring and the inner ring of the bearing, so that the bearing can be fully stressed, thereby facilitating the reduction of damage to the outer ring of the bearing.

[0032] Therefore, the bearing puller according to the embodiment of the utility model has the advantages of facilitating the disassembly of the bearing and reducing the damage to the outer ring of the bearing.

[0033] like Figures 1 to 3 As shown, in some embodiments, the bearing puller according to the embodiment of the utility model includes a plurality of connecting pieces 5.

[0034] A plurality of connecting pieces 5 are arranged on the bracket 2 at intervals along the circumferential direction, one end of the connecting piece 5 is hinged to the bracket 2, and the other end of the connecting piece 5 is hinged to the pull rod 3, and the extension direction of the rotation axis of the two ends of the connecting piece 5 is consistent with the radial direction of the screw 1. Specifically, each pull rod 3 is connected to a connecting piece 5 on both sides in the circumferential direction, and the pull rod 3 is connected to the connecting piece 5 by bolts and nuts. That is, the bracket 2 is connected to the pull rod 3 through the connecting piece 5, and each pull rod 3 is provided with a connecting piece 5 on both sides in the circumferential direction, so as to facilitate the limiting of the pull rod 3, and make the overall structure more stable, and improve the strength during pulling.

[0035] In some embodiments, there are three tie rods 3, and the angle between two adjacent tie rods 3 in the circumferential direction is 120°, so that the force can be evenly distributed.

[0036] like Figures 1 to 3 As shown, in some embodiments, the bearing puller according to the embodiment of the present invention includes a rotating shaft 6.

[0037] The first end 11 of the screw rod 1 is located between the hook 4 and the bracket 2 in the first direction, and the second end 12 of the screw rod 1 is provided with a pin hole 14. The pin hole 14 and the rotating shaft 6 both extend in the radial direction of the screw rod 1, and the rotating shaft 6 can be inserted into the pin hole 14 to rotate the screw rod 1. Specifically, the second end 12 of the screw rod 1 is provided with a plurality of pin holes 14. After the rotating shaft 6 is inserted into the pin hole 14, the rotating shaft 6 rotates clockwise or counterclockwise to drive the bracket 2 to move in the first direction. For example, the first end 11 is located below the second end 12.

[0038] In some embodiments, a first avoidance hole 13 extending along a first direction is formed at the first end portion 11 of the screw rod 1 , so that the shaft can be easily inserted into the first avoidance hole 13 .

[0039] In some embodiments, a base 7 is provided at the first end 11 of the screw 1, and the base 7 has a second avoidance hole 71 extending therethrough in a first direction. The base 7 can move relative to the screw 1, and a gasket 8 is provided inside the base 7 to facilitate the shaft to pass through the second avoidance hole 71 of the base 7 and extend into the first avoidance hole 13 of the first end 11 of the screw 1.

[0040] In some embodiments, the base 7 is rotatable relative to the screw 1 .

[0041] In some embodiments, the base 7 is threadedly connected to the screw rod 1 , and when the screw rod 1 rotates, the base 7 and the bracket 2 move toward each other (relative motion) or away from each other (reverse motion) in a first direction.

[0042] The pull rod 3 is an arc-shaped structure, and the two ends of the pull rod 3 in the first direction are respectively connected to the connecting piece 5 and the hook 4. For example, the upper part of the pull rod 3 is connected to the connecting piece 5, and the lower end of the pull rod 3 is connected to the hook 4.

[0043] like Figures 1 to 3 As shown, in some embodiments, a threaded hole is provided at one end of the pull rod 3 away from the bracket 2, and the threaded hole penetrates the pull rod 3 in the radial direction of the screw rod 1, and the hook 4 is threadedly connected to the threaded hole. The hook 4 is provided with two nuts threadedly connected thereto, and the two nuts are located on both sides of the pull rod 3 in the radial direction of the screw rod 1. In this way, the position of the hook 4 can be easily adjusted, and the nut can fix the hook 4. For example, the hook 4 is a pin. According to the actual space conditions of the bearing, different types of threaded pins can be selected to meet the disassembly of the bearing under different conditions. It is easy to replace and will not affect the overall disassembly rhythm.

[0044] like Figures 1 to 3 As shown, in some embodiments, the hook 4 includes a first section 41 and a second section 42 connected in the radial direction of the screw 1, the first section 41 is located on the side of the second section 42 adjacent to the screw 1 in the radial direction of the screw 1, and the diameter of the first section 41 is smaller than the diameter of the second section 42. Specifically, the second section 42 is threadedly connected to the pull rod 3, and a nut threadedly connected thereto is provided on the second section 42. The first section 41 directly acts on the inner ring of the bearing, which can effectively protect the state of the bearing.

[0045] The bearing puller according to the embodiment of the utility model can effectively improve work efficiency and reduce operating difficulty, has a simple and detachable structure, is adaptable to components of different sizes, and meets the requirements of high efficiency, easy processing, labor saving, high practicality and safety.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A bearing puller, characterized in that: include: A screw rod, the screw rod extending in a first direction, and a thread is provided on an outer peripheral surface of the screw rod; A bracket, the bracket is an annular structure, the bracket is sleeved around the screw, and the screw is threadedly connected to the bracket; A plurality of tie rods, each of which has a first preset size in the first direction, is connected to the bracket, is spaced apart along the circumferential direction, and is movable relative to the bracket; A plurality of hooks are connected to the plurality of pull rods one by one, the hooks have a second preset size in the radial direction of the screw, the pull rods form an angle with the hooks, and the hooks can move in the radial direction of the screw relative to the pull rods connected thereto.

2. The bearing puller according to claim 1, characterized in that: It comprises a plurality of connecting plates, which are arranged on the bracket at intervals along the circumferential direction, one end of the connecting plate is hinged to the bracket, the other end of the connecting plate is hinged to the pull rod, and the extension direction of the rotation axis at both ends of the connecting plate is consistent with the radial direction of the screw rod.

3. The bearing puller according to claim 2, characterized in that: Each of the pull rods is connected to a connecting piece on both sides in the circumferential direction, and the pull rods are connected to the connecting piece via bolts and nuts.

4. The bearing puller according to claim 3, characterized in that: There are three tie rods, and the angle between two adjacent tie rods in the circumferential direction is 120°.

5. The bearing puller according to claim 4, characterized in that: It includes a rotating shaft, the first end of the screw is located between the hook and the bracket in the first direction, the second end of the screw is provided with a pin hole, the pin hole and the rotating shaft both extend along the radial direction of the screw, and the rotating shaft can be extended into the pin hole to rotate the screw.

6. The bearing puller according to claim 5, characterized in that: The first end portion of the screw rod is provided with a first avoidance hole extending along the first direction.

7. The bearing puller according to claim 6, characterized in that: The first end of the screw rod is provided with a base, the base has a second avoidance hole penetrating therethrough along a first direction, and the base can move relative to the screw rod.

8. The bearing puller according to claim 7, characterized in that: A gasket is provided in the base; The base can rotate relative to the screw; Alternatively, the base is threadedly connected to the screw rod, and when the screw rod rotates, the base and the bracket move toward each other or away from each other in the first direction.

9. The bearing puller according to any one of claims 1 to 8, characterized in that: A threaded hole is provided at one end of the pull rod away from the bracket, the threaded hole penetrates the pull rod in the radial direction of the screw rod, and the draw hook is threadedly connected to the threaded hole; The draw hook is provided with two nuts threadedly connected thereto, and the two nuts are located on both sides of the draw rod in the radial direction of the screw rod.

10. The bearing puller according to claim 9, characterized in that: The hook comprises a first section and a second section connected in the radial direction of the screw, the first section is located on a side of the second section adjacent to the screw in the radial direction of the screw, and a diameter of the first section is smaller than a diameter of the second section.

Images