Small motor bearing dismounting device

Abstract

The utility model discloses a miniature motor bearing dismounting device which comprises a bolt, a first nut, screw rods, a second nut, a lantern ring and a clamping rod, the first nut is installed on the bolt in a threaded mode, the two symmetrically-arranged screw rods are fixedly installed on the first nut, the second nut is installed on the screw rods in a threaded mode, and the lantern ring is installed on the clamping rod. A lantern ring movably sleeves the screw and is located between the first nut and the second nut, the inner diameter of the lantern ring is larger than the outer diameter of the screw, the lantern ring is fixedly connected with the clamping rod, and a clamping notch used for clamping a motor bearing is formed in the end, away from the lantern ring, of the clamping rod. The bearing is clamped into the two material clamping notches at the same time, then the second nut is rotated, and the lantern ring can be pressed tightly, so that the bearing is clamped by the clamping rod; by rotating the bolt, the tip is in contact with the end part of the rotor and extrudes the rotor, so that the rotor is separated from the bearing, the bearing is convenient and rapid to disassemble, and the rotor can be protected from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools, in particular to a small motor bearing disassembly device. Background Art

[0002] In the industrial field, small motors are widely used. Small motor bearings are double-sided sealed and generally do not have separate oil holes. During routine maintenance, maintenance personnel found that the small motor bearings made abnormal noises and replaced the bearings.

[0003] When replacing the bearings of a small motor, it is difficult to disassemble it manually, and it is often necessary to tamp the bearing with a hammer. Hold the rotor with one hand and hold the tamping tool with the other hand to tamp the bearing off the rotor. However, the tamping process can easily damage the motor, causing it to be scrapped. Utility Model Content

[0004] Based on this, it is necessary to provide a small motor bearing disassembly device to address the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a small motor bearing disassembly device, including a bolt, a first nut, a screw rod, a second nut, a ring and a clamping rod, the first nut is threadedly installed on the bolt, two symmetrically arranged screw rods are fixedly installed on the first nut, the second nut is threadedly installed on the screw rod, a ring is movably provided on the screw rod and located between the first nut and the second nut, the inner diameter of the ring is larger than the outer diameter of the screw rod, the ring is fixedly connected to the clamping rod, and a clamping notch for clamping the motor bearing is provided at one end of the clamping rod away from the ring.

[0006] Optionally, the bolt is radially mounted with a swivel rod.

[0007] Optionally, a fixing ring is fixedly mounted on the bolt, and the rotating rod is connected to the fixing ring.

[0008] Optionally, the rotating rod is fixedly connected to the fixing ring.

[0009] Optionally, the rotating rod is provided with an external thread, the fixing ring is provided with a first internal thread hole adapted to the external thread of the rotating rod, the threaded rod portion of the bolt is provided with a through hole connected to the first internal thread hole, the rotating rod passes through the through hole and is threadedly connected to the first internal thread hole.

[0010] Optionally, the rotating rod is provided with an external thread, the screw head of the bolt is provided with a second internal thread hole adapted to the external thread of the rotating rod, and the rotating rod is threadedly connected to the second internal thread hole.

[0011] Optionally, the rotary rod is fixedly connected to the screw head of the bolt.

[0012] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0013] By clamping the bearing into the two clamping gaps at the same time and then turning the second nut, the collar can be compressed so that the clamping rod clamps the bearing; by turning the bolt, the pointed head contacts the end of the rotor and squeezes the rotor, thereby separating the rotor from the bearing. The bearing can be disassembled quickly and conveniently, and the rotor can be protected from damage.

[0014] For bearings with a diameter smaller than the outer diameter of the first nut, the two clamping rods can be directly held so that the clamping rods maintain an inclined posture on the screw rod, which is convenient for clamping bearings with smaller diameters. Combined with the pointed head design, rotors and bearings with smaller diameters can be disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 It is a right side view of the embodiment 1 of the utility model;

[0017] Figure 3 This is a diagram of the use state of Embodiment 1 of the utility model;

[0018] Figure 4 This is a partial structural diagram of Example 2 of the utility model;

[0019] Figure 5 This is a partial structural diagram of Example 3 of the utility model;

[0020] Figure 6 It is a partial structural schematic diagram of Example 4 of the utility model;

[0021] Figure 7 This is a partial structural diagram of Example 5 of the utility model;

[0022] In the figure, 1, bolt; 2, first nut; 3, screw rod; 4, second nut; 5, collar; 6, clamping rod; 7, pointed head; 8, bearing; 9, clamping notch; 10, rotating rod; 11, fixing ring; 12, first internal threaded hole; 13, through hole; 14, second internal threaded hole; 15, rotor. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. Example 1

[0024] See also Figures 1 to 3 The embodiment of the present application provides a small motor bearing disassembly device, including a bolt 1, a first nut 2, a screw rod 3, a second nut 4, a collar 5 and a clamping rod 6. A pointed head 7 is provided at one end of the bolt 1. The first nut 2 is threadedly installed on the bolt 1. Two symmetrically arranged screw rods 3 are fixedly installed on the first nut 2. The second nut 4 is threadedly installed on the screw 3. A collar 5 is movably provided on the screw 3 and located between the first nut 2 and the second nut 4. The inner diameter of the collar 5 is larger than the outer diameter of the screw rod 3. The collar 5 is fixedly connected to the clamping rod 6. A clamping notch 9 for clamping a motor bearing 8 is provided at one end of the clamping rod 6 away from the collar 5.

[0025] When disassembling bearing 8, refer to Figure 1 , insert the bearing 8 into the two clamping notches 9 at the same time, then rotate the second nut 4, the second nut 4 is screwed in the direction of the first nut 2, thereby pressing the collar 5, so that the clamping rod 6 clamps the bearing 8; then rotate the bolt 1, under the action of the first nut 2, the tip 7 of the bolt 1 is screwed into the rotor 15 of the motor, the tip 7 contacts the end of the rotor 15 and squeezes the rotor 15, so that the rotor 15 moves axially, thereby separating the rotor 15 from the bearing 8;

[0026] See also Figure 3 For a bearing 8 whose diameter is smaller than the outer diameter of the first nut 2, the two clamping rods 6 can be directly held so that the free ends of the clamping rods 6 are brought closer to the center of the bolt 1. Since the inner diameter of the collar 5 is larger than the outer diameter of the screw 3, the clamping rods 6 can be kept in an inclined position on the screw 3, which is convenient for clamping a bearing 8 with a smaller diameter. With the design of the pointed head 7, the rotor 15 and the bearing 8 with a smaller diameter can be disassembled, avoiding being blocked by the first nut 2 and being unable to disassemble the bearing 8 with a diameter smaller than the outer diameter of the first nut 2. Example 2

[0027] See also Figure 4 The embodiment of the present application provides a small motor bearing disassembly device, which is substantially the same as the embodiment 1, except that the bolt 1 of the embodiment of the present application is radially mounted with a rotating rod 10. Specifically, a fixing ring 11 is fixedly mounted on the bolt 1, the bolt 1 is fixedly connected to the fixing ring 11 by welding, and the rotating rod 10 is fixedly connected to the fixing ring 11.

[0028] By providing the rotating rod 10, the torque can be increased, which makes it easier to rotate the bolt 1 and makes the disassembly of the bearing 8 more labor-saving. Example 3

[0029] See also Figure 5The embodiment of the present application provides a small motor bearing disassembly device, and the embodiment of the present application is substantially the same as the embodiment 2, except that the rotary rod 10 of the embodiment of the present application is not fixedly connected to the fixing ring 11, but is threadedly connected to the fixing ring 11. Specifically, the rotary rod 10 is provided with an external thread, and the fixing ring 11 is provided with a first internal thread hole 12 adapted to the external thread of the rotary rod 10, and the threaded rod portion of the bolt 1 is provided with a through hole 13 connected to the first internal thread hole 12, and the rotary rod 10 passes through the through hole 13 and is threadedly connected to the first internal thread hole 12. In this way, the length of the rotary rod 10 can be adjusted, and by increasing the screw-out length of the rotary rod 10, the torque is increased, making the disassembly of the bearing 8 more labor-saving; by reducing the screw-out length of the rotary rod 10, the lengths of the two ends of the rotary rod 10 from the screw rod 3 are the same, which makes it convenient to hold the rotary rod 10 with both hands for rotation, and at the same time, the space occupied by the entire device can be reduced, making it easy to store. Example 4

[0030] See also Figure 6 The embodiment of the present application provides a small motor bearing disassembly device, and the embodiment of the present application is roughly the same as the embodiment 1, and the difference is that the bolt 1 of the embodiment of the present application is radially installed with a rotating rod 10. Specifically, the rotating rod 10 is provided with an external thread, and the screw head of the bolt 1 is provided with a second internal threaded hole 14 that is adapted to the external thread of the rotating rod 10, and the rotating rod 10 is threadedly connected with the second internal threaded hole 14. The beneficial effects of this embodiment can be referred to in Example 3, and this embodiment does not need to set a fixing ring 11, which can reduce parts and save costs. In addition, this embodiment is provided with a second internal threaded hole 14 on the screw head, and does not open a hole on the threaded rod of the bolt 1, which can ensure the strength of the threaded rod of the bolt 1. However, correspondingly, the width of the screw head is not as wide as the width of the fixing ring 11, and the diameter of the rotating rod 10 of this embodiment is designed to be slightly smaller than the diameter of the rotating rod 10 of Examples 2 and 3. Example 5

[0031] See also Figure 7 The embodiment of the present application provides a small motor bearing disassembly device, which is substantially the same as the embodiment 1, except that the bolt 1 of the embodiment of the present application is radially mounted with a rotating rod 10. Specifically, the rotating rod 10 is fixedly connected to the screw head of the bolt 1. The beneficial effects of the present embodiment can be referred to the embodiment 2, and the present embodiment does not need to set the fixing ring 11, which can reduce the number of parts and save costs.

[0032] The bolt 1 comprises a screw head and a threaded shank. The pointed head 7 is located at an end of the threaded shank away from the screw head. The pointed head 7 is formed by grinding the threaded shank.

[0033] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0035] 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.

[0036] 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.

[0037] 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 connection; it can be a mechanical connection or an electrical connection; 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.

Claims

1. A small motor bearing disassembly device, characterized in that: The invention comprises a bolt (1), a first nut (2), a screw rod (3), a second nut (4), a collar (5) and a clamping rod (6), wherein one end of the bolt (1) is provided with a pointed head (7), the first nut (2) is threadedly mounted on the bolt (1), two symmetrically arranged screw rods (3) are fixedly mounted on the first nut (2), the second nut (4) is threadedly mounted on the screw rod (3), a collar (5) is movably sleeved on the screw rod (3) and located between the first nut (2) and the second nut (4), the inner diameter of the collar (5) being larger than the outer diameter of the screw rod (3), the collar (5) being fixedly connected to the clamping rod (6), and a clamping notch (9) for clamping a motor bearing (8) is provided at one end of the clamping rod (6) away from the collar (5).

2. The small motor bearing disassembly device according to claim 1, characterized in that: The bolt (1) is radially mounted with a rotary rod (10).

3. The small motor bearing disassembly device according to claim 2, characterized in that: A fixing ring (11) is fixedly mounted on the bolt (1), and the rotating rod (10) is connected to the fixing ring (11).

4. The small motor bearing disassembly device according to claim 3, characterized in that: The rotating rod (10) is fixedly connected to the fixing ring (11).

5. The small motor bearing disassembly device according to claim 3, characterized in that: The rotating rod (10) is provided with an external thread, the fixing ring (11) is provided with a first internal thread hole (12) adapted to the external thread of the rotating rod (10), the threaded rod portion of the bolt (1) is provided with a through hole (13) connected to the first internal thread hole (12), and the rotating rod (10) passes through the through hole (13) and is threadedly connected to the first internal thread hole (12).

6. The small motor bearing disassembly device according to claim 2, characterized in that: The rotating rod (10) is provided with an external thread, the screw head of the bolt (1) is provided with a second internal thread hole (14) adapted to the external thread of the rotating rod (10), and the rotating rod (10) is threadedly connected to the second internal thread hole (14).

7. The small motor bearing disassembly device according to claim 2, characterized in that: The rotating rod (10) is fixedly connected to the screw head of the bolt (1).

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