Disassembly device for electric motor fan

Abstract

The utility model discloses a disassembly device for a motor fan, which belongs to the field of motor maintenance, and includes a jacking device and a lead screw. The jacking device abuts against a fan sleeve of a fan, and the fan sleeve is sleeved on the motor shaft of the motor. A center hole is opened at the center of the jacking device parallel to the motor shaft, and a lead screw is arranged through the center hole, and the lead screw is threadedly connected to the center hole; the jacking device includes a clamping part and a jacking piece threadedly connected to one end of the clamping part away from the fan sleeve, the clamping part abuts against the outside of the fan sleeve, and a locking hole is provided at the abutment of the clamping part with the fan sleeve, and a locking component for abutting against the outer peripheral surface of the fan sleeve is provided in the locking hole. The beneficial effects of the utility model are: the overall device is simple and easy to operate, and the same jacking piece can be used to fix clamping parts of different models, so that the device is suitable for disassembly of motor shaft fans of different diameters, and the operator can complete the operation alone, and the fan is not damaged after the whole process without knocking.

Description

Technical Field

[0001] The utility model belongs to the field of motor maintenance, and in particular relates to a disassembly device for a motor fan. Background Art

[0002] The motor fan is a heat dissipation component of the motor. When the generator is working, the coil generates a lot of heat. When the temperature is too high, it will affect the normal operation of the generator. Therefore, a heat dissipation device with good heat dissipation effect is required, and a fan is usually used for heat dissipation. After the motor has been running for a period of time, its bearings must be refueled or the fan and the shaft are severely corroded and need to be replaced. In the process of replacing the bearings, the fan blades of the motor need to be disassembled. The fans of the electric motors are mostly made of plastic. Those with disassembly holes can be slowly removed with a suitable puller, but most (5kw and below) small motor fans do not have disassembly holes, making it impossible to use conventional tools for disassembly. In addition, the fan and the shaft may be severely corroded and dirty, so the removal of the fan on the motor often becomes a stumbling block for motor maintenance.

[0003] Daily maintenance of the motor fan is particularly important for the normal operation of the motor. The fan is installed by key matching and has the characteristics of light interference fit. In the prior art, the fan is removed from the motor shaft by pulling the fan with external force, and then hitting the motor shaft in the opposite direction with external force. This disassembly method must be completed by two people, which wastes manpower; and the disassembly time is long and the work efficiency is extremely low; at the same time, since the impact of the motor shaft is usually hit by tools such as impact punches, the motor shaft will be damaged, causing unnecessary losses. When disassembling the fan, the staff usually hits the fan housing with a hammer to knock the fan out of the generator housing. However, when the staff hits the fan, the fan vibrates violently, the internal structure of the fan is easily loosened and damaged, and the disassembly quality of the generator fan is low. Using a crowbar to pry slowly and evenly at the symmetrical parts on both sides of the fan is very time-consuming, resulting in low disassembly efficiency of the fan. In the process of disassembling the motor, since there is no special fan disassembly tool, copper rods, hand hammers, crowbars and other simple tools are often used to disassemble by knocking, prying and other methods, which can easily cause the fan to deform or break. In addition, when using tools, the existing disassembly tools are designed for individual fans with tight assembly, and have single functions and poor versatility. They are only suitable for special models of motors, and cannot meet the disassembly requirements of motors of various specifications and sizes, and are not universal.

[0004] Some patents on foldable suction buckets are disclosed in the prior art, among which the utility model patent with the announcement number CN214870248U discloses a high-voltage motor fan disassembly device, which includes a motor shaft, a fan sleeved on the motor shaft, and a fixed beam, with screw rods passing through both ends of the fixed beam, a special nut on the screw rod, the screw rod connecting the fan, and a jack between the motor shaft and the fixed beam. Although the problem of the difficulty of disassembling the fan of the motor is solved, it does not solve the problems of low efficiency, damage to the fan, and lack of versatility when the disassembly work is completed by a single operation.

[0005] In view of this, the inventor conducted in-depth research on the need to complete the disassembly work by a single operation with low efficiency and without damaging the fan, and to have versatility, thus resulting in the present case. Utility Model Content

[0006] In order to overcome the problems of low efficiency, damage to the fan and lack of universality in the prior art of completing the disassembly work by a single operation, the utility model provides a disassembly device for a motor fan, comprising a pulling device and a lead screw, the pulling device abuts against a fan sleeve of the fan, the fan sleeve is sleeved on the motor shaft of the motor, a center hole is opened at the center of the pulling device parallel to the motor shaft, the lead screw is penetrated in the center hole, and the lead screw is threadedly connected to the center hole;

[0007] The ejection device comprises a clamping portion and an ejection member threadedly connected to one end of the clamping portion away from the fan sleeve, the clamping portion abuts against the outer side of the fan sleeve, a locking hole is provided at the abutment portion of the clamping portion and the fan sleeve, and a locking member for abutting against the outer peripheral surface of the fan sleeve 3 is provided in the locking hole;

[0008] The locking component comprises a locking top screw, the locking top screw passes through the locking hole and abuts against the outer peripheral sleeve of the fan, and the locking top screw is threadedly connected to the locking hole.

[0009] The motor fan can be disassembled by using a pulling device and a screw. The overall device is simple and easy to operate. In addition, the pulling device is composed of a clamping part and a pulling piece. The fan sleeve is clamped by the clamping part and then tightened and fixed on the screw with the pulling piece. In actual use, the same pulling piece can be used to fix clamping parts of different models, so that the device is suitable for disassembly of motor shaft fans of different diameters. At the same time, a plurality of locking holes are opened on the clamping part near the inner side of the fan sleeve and a locking component is arranged in the locking hole. The abutting force between the clamping part and the fan sleeve is adjusted by the locking component, so that the fan is easier to disassemble. By arranging a locking top screw at the position where the clamping part and the fan sleeve abut, the clamping force of the clamping part on the fan sleeve can be adjusted.

[0010] Further, the clamping portion includes a mounting portion and two clamping claws, the ejector member is provided with an internal thread, the outer peripheral surface of the mounting portion is provided with an external thread threadedly connected to the internal thread on the ejector member, and the two clamping claws are integrally arranged on one end of the mounting portion away from the ejector member;

[0011] A lead screw mounting hole is formed on the mounting portion, and the lead screw is threadedly connected to the lead screw mounting hole.

[0012] Through the above technical scheme, the clamping part is set to consist of two clamping claws 7 and a mounting part 6. The mounting part 6 is installed on the screw 2 through the ejection piece 5. When in use, different types of clamping claws 7 can be set according to the disassembly requirements of the fan sleeve 3 on the motor shaft 4 with different diameters. When encountering fan sleeves 3 with different shaft diameters, only the clamping part can be replaced and a set of common ejection pieces 5 can be used. Different types of clamping parts can be connected to the ejection piece 5 by threaded connection. During use, it is necessary to select the corresponding clamping part according to the outer diameter size of the motor fan sleeve. The clamping part can be configured with a variety of inner diameter models according to actual needs, and the locking component only makes a small range of adjustment of the clamping force.

[0013] Furthermore, a rectangular cavity is provided at the abutment point between the clamping claw and the fan sleeve corresponding to the locking top screw, a locking block matching the size of the cavity is provided in the cavity, and the locking block is rotatably connected to the end of the locking top screw.

[0014] Through the above technical solution, a locking block is provided at the end of the inner side of the clamping portion abutting against the fan sleeve corresponding to the locking top screw. When the locking top screw is twisted inwardly toward the fan sleeve, the locking block is pushed closer to the fan sleeve, which can increase the force-bearing area of ​​the fan sleeve to maintain the stability of the force application, while also avoiding damage to the fan sleeve when the locking top screw is pushed inwardly.

[0015] Furthermore, an end portion of the lead screw close to the fan sleeve is rotatably connected to an abutment block for abutting against the motor shaft, and a flexible pad is provided on the end surface of the abutment block close to the motor shaft.

[0016] Furthermore, one end of the lead screw embedded in the abutment block is provided with a limit platform protruding outward, and a rotation groove for accommodating the limit platform is formed on the abutment block.

[0017] Through the above technical solution, an abutment block is arranged at the end of the screw, and a limit platform connected to the rotation of the screw is arranged inside the abutment block. When the screw is rotated toward the motor shaft, the abutment block is pushed so that the force applied to the motor shaft can be more stable. In addition, a flexible pad is arranged to increase the force-bearing area between the screw and the motor shaft while preventing damage to the motor shaft caused by the rotation of the screw.

[0018] Furthermore, a reinforcing nut is arranged on the lead screw at one end close to the ejecting member, and a force rod extending in its radial direction is fixedly arranged on the lead screw at a side away from the ejecting member, and the force rod is arranged close to the reinforcing nut.

[0019] Furthermore, the axis of the lead screw coincides with the axis of the motor shaft, and the outer surfaces of the two clamping claws and the ejecting member are flush after being connected.

[0020] Furthermore, a nut is provided at one end of the locking screw facing away from the motor shaft, the axes of the two locking screws coincide, and the axes of the locking screws intersect the axis of the motor shaft perpendicularly.

[0021] Furthermore, after passing through the two clamping claws, the length of the lead screw is greater than the length of the fan sleeve.

[0022] Beneficial effects:

[0023] The beneficial effects produced by adopting the technical solution of the utility model are as follows:

[0024] (1) The motor fan can be disassembled by using a pull-out device and a screw. The overall device is simple and easy to operate. In addition, the pull-out device is composed of a clamping portion and a pull-out member. The fan sleeve is clamped by the clamping portion and then tightened and fixed by the pull-out member. The same pull-out member can be used to fix clamping portions of different types, so that the device is suitable for disassembling motor shaft fans of different diameters. At the same time, a plurality of locking holes are opened on the clamping portion near the inner side of the fan sleeve and locking components are arranged in the locking holes. The contact force between the clamping portion and the fan sleeve is adjusted by the locking component, making the fan disassembly easier and allowing the operator to complete the operation alone. In addition, there is no knocking during the whole process, so that the fan is not damaged after disassembly.

[0025] (2) According to the disassembly requirements of the fan sleeves on motor shafts with different diameters, suitable mounting parts can be selected for assembly through the pull-out parts. During use, the corresponding clamping parts need to be selected according to the outer diameter of the motor fan sleeve. The clamping parts can be configured with a variety of inner diameter models according to actual needs. The locking parts only need to adjust the clamping force within a small range, so that the device has universality.

[0026] (3) A locking block is provided at the end of the clamping portion corresponding to the locking screw on the inner side where the clamping portion abuts against the fan sleeve. When the locking screw is turned inwardly toward the fan sleeve, the locking block is pushed closer to the fan sleeve, thereby increasing the force-bearing area of ​​the fan sleeve to maintain the stability of the force. At the same time, it also avoids damage to the fan sleeve when the locking screw is pushed inwardly, thereby further ensuring the integrity of the fan during the disassembly process of the fan.

[0027] (4) An abutment block is provided at the end of the lead screw. When the lead screw is rotated toward the motor shaft, the abutment block is pushed so that the force on the motor shaft can be more stable. In addition, a flexible pad is provided to increase the force-bearing area between the lead screw and the motor shaft while preventing the lead screw from rotating and causing damage to the motor shaft, thereby ensuring that the fan sleeve is not damaged during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a disassembly device based on a motor fan of the utility model;

[0030] Figure 2 It is a cross-sectional view of a disassembly device based on a motor fan of the utility model;

[0031] Figure 3 It is a schematic diagram of a clamping portion of a disassembly device based on a motor fan of the utility model;

[0032] In the figure, 1. ejection device; 2. lead screw; 3. fan cover; 4. motor shaft; 5. ejection member; 6. mounting portion; 7. clamping claw; 8. locking ejector screw; 9. locking block; 10. abutment block; 11. limit table; 12. flexible pad; 13. reinforcing nut; 14. force rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] The overall device of this embodiment is simple and easy to operate. The same ejector can be used to fix the clamping parts of different models, so that the device is suitable for the removal of motor shaft fans of different diameters. The operator can complete the operation alone, and the fan is not damaged after the removal without knocking. The specific implementation method is as follows:

[0035] like Figure 1-3 As shown, a disassembly device for a motor fan comprises a pulling device 1 and a lead screw 2, the pulling device 1 abuts against a fan sleeve 3 of the fan, the fan sleeve 3 is sleeved on a motor shaft 4 of the motor, a center hole is opened at the center of the pulling device 1 parallel to the motor shaft 4, the lead screw 2 penetrates the center hole, and the lead screw 2 is threadedly connected to the center hole;

[0036] The pulling device 1 includes a clamping portion and a pulling piece 5 threadedly connected to one end of the clamping portion facing away from the fan sleeve 3. The clamping portion abuts against the outer side of the fan sleeve 3. A locking hole is provided at the abutment portion of the clamping portion with the fan sleeve 3. A locking component for abutting against the outer peripheral surface of the fan sleeve 3 is provided in the locking hole. The locking component includes a locking top screw 8. The locking top screw 8 passes through the locking hole and abuts against the outer peripheral surface of the fan sleeve 3. The locking top screw 8 is threadedly connected to the locking hole.

[0037] By arranging a locking screw 8 at the position where the clamping portion abuts against the fan cover 3 , the clamping force of the clamping portion on the fan cover 3 can be adjusted.

[0038] The motor fan can be disassembled by using the pulling device 1 and the screw 2. The overall device is simple and easy to operate. In addition, the pulling device 1 is composed of a clamping part and a pulling piece 5. The fan sleeve 3 is clamped by the clamping part and then tightened and fixed on the screw 2 by the pulling piece 5. In actual use, the same pulling piece 5 can be used to fix clamping parts of different models, so that the device is suitable for disassembly of motor shaft 4 fans with different diameters. At the same time, a plurality of locking holes are opened on the inner side of the clamping part near the fan sleeve 3 and a locking component is arranged in the locking hole. The abutting force between the clamping part and the fan sleeve 3 is adjusted by the locking component, so that the disassembly of the fan is easier. By arranging a locking top screw 8 at the position where the clamping part abuts the fan sleeve 3, the clamping force of the clamping part on the fan sleeve 3 can be adjusted.

[0039] As a preferred embodiment, the clamping portion includes a mounting portion 6 and two clamping claws 7. The ejector member 5 is provided with an internal thread, and the outer peripheral surface of the mounting portion 6 is provided with an external thread threadedly connected to the internal thread on the ejector member 5. The two clamping claws 7 are integrally arranged on the mounting portion 6 at one end away from the ejector member 5; a screw 2 mounting hole is formed on the mounting portion 6, and the screw 2 is threadedly connected to the screw 2 mounting hole.

[0040] Here, the clamping part is set to be composed of two clamping claws 7 and a mounting part 6. The mounting part 6 is installed on the screw 2 through a pull-out piece 5. When in use, different types of clamping claws 7 can be set according to the disassembly requirements of the fan sleeve 3 on the motor shaft 4 with different diameters. When encountering fan sleeves 3 with different shaft diameters, only the clamping part can be replaced and a set of common pull-out pieces 5 can be used. Different types of clamping parts can be connected to the pull-out pieces 5 by threaded connection. During use, it is necessary to select the corresponding clamping part according to the outer diameter size of the motor fan sleeve. The clamping part can be configured with a variety of inner diameter models according to actual needs, and the locking component only makes a small range of adjustment of the clamping force.

[0041] As a preferred embodiment, a rectangular cavity is opened at the abutment point between the clamping claw 7 and the fan sleeve 3 corresponding to the locking top screw 8, and a locking block 9 matching the cavity size is arranged in the cavity, and the locking block 9 is rotatably connected to the end of the locking top screw 8.

[0042] Here, a locking block 9 is provided at the end of the locking top screw 8 corresponding to the inner side where the clamping portion abuts against the fan sleeve 3. When the locking top screw 8 is twisted inwardly toward the fan sleeve 3, the locking block 9 is pushed closer to the fan sleeve 3, which can increase the force-bearing area of ​​the fan sleeve 3 to maintain the stability of the force, and also avoid damage to the fan sleeve 3 when the locking top screw 8 is pushed inwardly.

[0043] As a preferred embodiment, one end of the lead screw 2 close to the fan sleeve 3 is rotatably connected to an abutment block 10 for abutting against the motor shaft 4 , and a flexible pad 12 is provided on the end surface of the abutment block 10 close to the motor shaft 4 .

[0044] As a preferred embodiment, one end of the lead screw 2 embedded in the abutment block 10 is provided with an outwardly protruding limit platform 11, and the abutment block 10 is formed with a rotation groove for accommodating the limit platform 11.

[0045] Here, an abutment block 10 is arranged at the end of the screw 2, and a limit platform 11 rotatably connected to the screw 2 is arranged inside the abutment block 10. When the screw 2 is rotated toward the motor shaft 4, the abutment block 10 is pushed so that the force applied to the motor shaft 4 can be more stable. In addition, a flexible pad 12 is arranged to increase the force-bearing area between the screw 2 and the motor shaft 4 while preventing the rotation of the screw 2 from causing damage to the motor shaft 4.

[0046] As a preferred embodiment, a reinforcing nut 13 is provided on the lead screw 2 at one end close to the ejection member 5 , and a force rod 14 extending radially thereof is fixedly provided on the lead screw 2 at a side away from the ejection member 5 , and the force rod 14 is arranged close to the reinforcing nut 13 .

[0047] Here, the reinforcement nut 13 and the force rod 14 are provided to facilitate the screwing of the lead screw 2, making the operation more labor-saving and convenient.

[0048] As a preferred embodiment, the axis of the lead screw 2 coincides with the axis of the motor shaft 4, and the outer surfaces of the two clamping claws 7 and the ejecting member 5 are flush after being connected.

[0049] As a preferred embodiment, a nut is provided at one end of the locking screw 8 facing away from the motor shaft 4 , the axes of the two locking screws 8 coincide, and the axes of the locking screws 8 intersect the axis of the motor shaft 4 at right angles.

[0050] As a preferred embodiment, after passing through the two clamping claws 7 , the length of the lead screw 2 is greater than the length of the fan sleeve 3 .

[0051] Here, a thread adapted to the lead screw 2 is machined at the center position of the pulling device 1, and the displacement generated by the rotation of the spiral thread is used to apply force to the motor rotor shaft and the fan jacket. Under the action of the force, a force in a completely opposite direction is generated. After overcoming the friction between the motor shaft 4 and the fan sleeve, the pulling force is transmitted, and finally the outward pulling force generated during the movement of the lead screw 2 acts on the rear sleeve of the fan, and the fan is removed without damage.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A disassembly device for a motor fan, characterized in that: The invention comprises a pulling device (1) and a lead screw (2), wherein the pulling device (1) is in contact with a fan sleeve (3) of the fan, and the fan sleeve (3) is sleeved on a motor shaft (4) of the motor, and a center hole is provided at the center of the pulling device (1) parallel to the motor shaft (4), and the lead screw (2) is inserted through the center hole, and the lead screw (2) is threadedly connected to the center hole; The ejection device (1) comprises a clamping portion and an ejection member (5) threadedly connected to an end of the clamping portion facing away from the fan sleeve (3), the clamping portion abutting against the outer side of the fan sleeve (3), a locking hole is provided at the abutment portion of the clamping portion with the fan sleeve (3), and a locking member for abutting against the outer peripheral surface of the fan sleeve (3) is provided in the locking hole; The locking component comprises a locking top screw (8), the locking top screw (8) passes through the locking hole and abuts against the outer peripheral surface of the fan sleeve (3), and the locking top screw (8) is threadedly connected to the locking hole.

2. A disassembly device for a motor fan according to claim 1, characterized in that: The clamping portion comprises a mounting portion (6) and two clamping claws (7), the ejector member (5) is provided with an internal thread, the outer peripheral surface of the mounting portion (6) is provided with an external thread threadedly connected to the internal thread on the ejector member (5), and the two clamping claws (7) are integrally arranged on one end of the mounting portion (6) away from the ejector member (5); A screw (2) mounting hole is formed on the mounting portion (6), and the screw (2) is threadedly connected to the screw (2) mounting hole.

3. The disassembly device of a motor fan according to claim 2, characterized in that: A rectangular cavity is provided at the abutment point between the clamping claw (7) and the fan sleeve (3) corresponding to the locking top screw (8), and a locking block (9) matching the size of the cavity is provided in the cavity, and the locking block (9) is rotatably connected to the end of the locking top screw (8).

4. The disassembly device for a motor fan according to claim 1, characterized in that: One end of the lead screw (2) close to the fan sleeve (3) is rotatably connected to an abutment block (10) for abutting against the motor shaft (4); a flexible pad (12) is provided on the end surface of the abutment block (10) close to the motor shaft (4).

5. The disassembly device for a motor fan according to claim 4, characterized in that: The lead screw (2) is embedded in one end of the abutment block (10) and is provided with a limit platform (11) protruding outwards. The abutment block (10) is formed with a rotation groove for accommodating the limit platform (11).

6. The disassembly device for a motor fan according to claim 1, characterized in that: A reinforcing nut (13) is arranged on the lead screw (2) at one end close to the ejection member (5), and a force rod (14) extending in its radial direction is fixedly arranged on the lead screw (2) at a side away from the ejection member (5), and the force rod (14) is arranged closely against the reinforcing nut (13).

7. The disassembly device for a motor fan according to claim 2, characterized in that: The axis of the lead screw (2) coincides with the axis of the motor shaft (4), and the outer surfaces of the two clamping claws (7) and the ejection member (5) are flush after they are connected.

8. The disassembly device for a motor fan according to claim 1, characterized in that: A nut is provided at one end of the locking top screw (8) away from the motor shaft (4), the axes of the two locking top screws (8) coincide, and the axes of the locking top screws (8) intersect perpendicularly with the axis of the motor shaft (4).

9. The disassembly device for a motor fan according to claim 2, characterized in that: After passing through the two mounting portions (6), the length of the lead screw (2) is greater than the length of the fan sleeve (3).

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