Novel ejector pin type motor fan dismounting puller

Abstract

The utility model relates to the technical field of dismounting pullers, in particular to a novel ejector pin type motor fan dismounting puller. The frame comprises a frame body, a locking anti-tension mechanism and a screwing thrust mechanism, the frame body comprises two layers of claw seats arranged in parallel and a claw frame located between the claw seats, and the outer edges of the claw seats are provided with long-strip-shaped holes for adjusting the distance between the claw seats and the claw frame; the locking anti-tensioning mechanism comprises an anti-tensioning jackscrew located on the outer side of the hook claw base and a hook claw jackscrew located at the tail end of the hook claw frame. The screwing thrust mechanism comprises a thrust lead screw. According to the utility model, the dismounting puller is jacked into the outer end part of the fan for pre-fixing, and then the thrust screw rod on the dismounting puller is used for applying a reverse acting force to the motor rotor, so that the fan is dismounted in a reverse direction relative to the motor rotor; the claw jackscrew can be jacked into a machining hole in the outer end of the fan, and the damage degree to the fan without the machining hole is small; the frame body is provided with two claws or three claws, and can be flexibly used according to the number of different machining holes and the dismounting tightness of the fan.

Description

Technical Field

[0001] This utility model relates to the field of disassembly puller technology, specifically to a novel pin-type motor fan disassembly puller. Background Technology

[0002] Electric fans are usually made of engineering plastics or aluminum alloys. Because the motor is often placed in an open-air environment and runs for a long time, the fan is prone to damage and deformation, and the motor shaft may also rust, which increases the difficulty of disassembling the fan.

[0003] To address these issues, technicians have made numerous attempts. For example, the centrifugal pump impeller disassembly device disclosed in Chinese patent CN213290092U can evenly adjust the adjusting components to ensure uniform force distribution around the impeller during disassembly, preventing impeller damage. However, existing solutions still have shortcomings. Due to differences in motor fan structure, some have machined holes while others do not. For fans with machined holes, existing pullers suffer from problems such as improper installation position and difficulty in installation due to excessively small machined holes; for fans without machined holes, existing pullers cannot be used, requiring the use of screwdrivers or pry bars for disassembly, which can cause significant damage to the motor fan. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a new type of pin-type motor fan disassembly puller.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A novel pin-type motor fan disassembly puller includes a fan sleeved on a motor rotor, and a disassembly puller is provided on the fan. The disassembly puller includes a frame body, a locking anti-tension mechanism, and a screwing thrust mechanism, wherein:

[0007] The frame body is centrally symmetrically arranged in a two- or three-claw hook shape, including two layers of parallel hook bases and a hook frame located between the hook bases. The outer edge of the hook base is provided with an elongated hole for adjusting the distance between the hook frame and the hook base.

[0008] The locking anti-tension mechanism includes an anti-tension top screw located on the outside of the hook claw seat and a hook claw top screw located at the end of the hook claw frame. The anti-tension top screw passes through the elongated hole and abuts against the hook claw frame. The hook claw top screw abuts vertically against the outer end of the fan. The spacing between the hook claw frames is adjusted by the anti-tension top screw to ensure that the hook claw top screw is tightly fixed to the outer end of the fan.

[0009] The screwing thrust mechanism includes a thrust screw that passes through two layers of hook seats and abuts against the center of the motor rotor; by screwing the thrust screw, the fan is removed in the opposite direction to the motor rotor.

[0010] This technical solution involves pre-fixing the fan by disassembling the puller and inserting it into the outer end of the fan. Then, the push screw on the puller applies a reverse force to the motor rotor, causing the fan to be removed in the opposite direction to the motor rotor. Specifically, the frame body provides support and is equipped with a locking anti-tension mechanism and a screwing thrust mechanism. The locking anti-tension mechanism locks the fan and adjusts the distance between the frame body and the outer end of the fan, thus making the frame body more secure. The screwing thrust mechanism adjusts the distance between the fixing frame and the electronic rotor, indirectly providing a reverse removal force for the fan relative to the motor rotor. This improves safety and work efficiency during operation while ensuring that the motor fan is not damaged during removal.

[0011] In addition, the novel pin-type motor fan disassembly puller proposed in this utility model may also have the following additional technical features:

[0012] According to one embodiment of the present invention, the connection between the thrust screw and the hook seat is welded with a reinforcing ring.

[0013] In this technical solution, the reinforcing rings are all located at the center of the hook and claw seat to increase the overall strength of the new puller.

[0014] According to one embodiment of the present invention, the hook screw is inserted into the machining hole at the outer end of the fan, and the outer end has a machining hole with a depth of 1±0.5mm.

[0015] In this technical solution, regardless of whether the fan has machining holes, a pin-type hook screw can be used for locking. Compared to removing the motor and fan with a screwdriver or pry bar, the damage caused by the hook screw to a fan without machining holes is negligible.

[0016] According to one embodiment of the present invention, the frame body is divided into a two-claw new puller or a three-claw new puller, which is selected according to the number of processing holes and the tightness when the fan is removed.

[0017] In this technical solution, the two-claw new puller has a frame body with two claw hooks, the cross-section of which is straight, the thrust screw is located in the middle, and the claw hooks are symmetrically arranged on both sides of the thrust screw; the three-claw new puller has a frame body with three claw hooks, the cross-section of which is triangular, the thrust screw is located in the middle, and the claw hooks are arranged at 60° intervals around the thrust screw.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] (1) The fan is pre-fixed by removing the puller and inserting it into the outer end of the fan. Then, the push screw on the puller is used to apply a reverse force to the motor rotor so that the fan is removed in the opposite direction to the motor rotor.

[0020] (2) The hook screw can be pushed into the machining hole at the outer end of the fan, which minimizes the damage to the fan without machining holes; the frame body has two or three claws to choose from, which can be used flexibly according to different numbers of machining holes and the tightness of fan removal. Attached Figure Description

[0021] Figure 1 This is a diagram showing the usage state of this utility model.

[0022] Figure 2 This is a schematic diagram of the three-claw hook base.

[0023] Figure 3 This is a schematic diagram of the two-claw hook base.

[0024] In the diagram: 1. Thrust screw; 2. Claw seat; 3. Claw frame; 4. Anti-tension top screw; 5. Claw top screw; 6. Fan; 7. Motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] like Figure 1 As shown, this embodiment provides a novel pin-type motor fan disassembly puller, including a fan 6 sleeved on the rotor of a motor 7, and a disassembly puller provided on the fan 6. The disassembly puller includes a frame body, a locking anti-tension mechanism, and a screwing thrust mechanism, wherein:

[0028] The frame body is arranged in a centrally symmetrical two-claw / three-claw hook shape, including two parallel hook bases 2 and a hook frame 3 located between the hook bases 2. The outer edge of the hook base 2 is provided with an elongated hole for adjusting the distance between it and the hook frame 3.

[0029] The locking anti-tension mechanism includes an anti-tension top screw 4 located outside the hook claw seat 2 and a hook claw top screw 5 located at the end of the hook claw frame 3. The anti-tension top screw 4 passes through the elongated hole and abuts against the hook claw frame 3, while the hook claw top screw 5 abuts vertically against the outer end of the fan 6. The spacing of the hook claw frame 3 is adjusted by the anti-tension top screw 4 to ensure that the hook claw top screw 5 is tightly fixed to the outer end of the fan 6.

[0030] The screwing and thrusting mechanism includes a screw 1, which passes through two layers of hook seats 2 and abuts against the center of the rotor of the motor 7. By screwing the screw 1, the fan 6 is removed in the opposite direction to the rotor of the motor 7.

[0031] This technical solution involves pre-fixing the fan 6 by disassembling the puller and inserting it into the outer end. Then, the push screw 1 on the puller applies a reverse force to the rotor of the motor 7, causing the fan 6 to be removed in the opposite direction to the motor 7 rotor. Specifically, the frame body provides support and is equipped with a locking anti-tension mechanism and a screwing thrust mechanism. The locking anti-tension mechanism locks the fan 6 and adjusts the distance between the frame body and the outer end of the fan 6, thus making the frame body more secure. The screwing thrust mechanism adjusts the distance between the fixing frame and the electronic rotor, indirectly providing a reverse removal force for the fan 6 relative to the motor 7 rotor. This improves the safety and efficiency of the operation while ensuring that the motor 7 and fan 6 are not damaged during removal.

[0032] In addition, the novel pin-type motor 7 and fan 6 disassembly puller proposed above according to this utility model may also have the following additional technical features:

[0033] According to one embodiment of the present invention, the connection between the thrust screw 1 and the hook seat 2 is welded with a reinforcing ring.

[0034] In this technical solution, the reinforcing rings are all located at the center of the hook base 2, which is used to increase the overall strength of the new puller.

[0035] According to one embodiment of the present invention, the hook screw 5 is inserted into the machining hole at the outer end of the fan 6, and the outer end has a machining hole with a depth of 1±0.5mm.

[0036] In this technical solution, regardless of whether the fan 6 has machining holes, it can be locked using a pin-type hook screw 5. Compared to removing the motor 7 or fan 6 with a screwdriver or pry bar, the damage caused by the hook screw 5 to the fan 6 without machining holes is negligible.

[0037] like Figure 2 and Figure 3 As shown, the frame body is divided into a two-claw new puller or a three-claw new puller, which is selected according to the number of processing holes and the tightness when the fan 6 is removed.

[0038] In this technical solution, the two-claw new puller has a frame body with two claw hooks, the cross-section of which is straight, the thrust screw 1 is located in the middle, and the hook claw frame 3 is symmetrically arranged on both sides of the thrust screw 1; the three-claw new puller has a frame body with three claw hooks, the cross-section of which is triangular, the thrust screw 1 is located in the middle, and the hook claw frame 3 is arranged around the thrust screw 1 at 60° intervals.

[0039] The usage process of the above embodiments is as follows:

[0040] like Figures 1 to 3As shown, first remove the cover of motor 7 and fan 6. Then, adjust the hook claw screw 5 outward so that its diameter is larger than the outer end diameter of fan 6 for easy installation. During installation, make sure the center cone at the front end of the thrust screw 1 coincides with the center of the motor 7 rotor. Then, adjust the position of the hook claw bracket 3, screw the hook claw screw 5 into the outer end of fan 6, and then tighten the anti-tension screw 4 to prevent the hook claw bracket 3 from expanding and deforming. Finally, use a wrench to screw the thrust screw 1. The thrust screw 1 drives fan 6 to move in the opposite direction to the motor 7 rotor, thereby smoothly removing fan 6 from the motor 7 rotor. The whole process is safe and efficient, and causes little damage to fan 6.

[0041] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A novel pin-type motor fan disassembly puller, characterized in that, Includes a fan (6) fitted onto the rotor of the motor (7), and a disassembly puller is provided on the fan (6). The disassembly puller includes a frame body, a locking anti-tension mechanism, and a screwing thrust mechanism, wherein: The frame body is arranged in a centrally symmetrical two-claw / three-claw hook shape, including two parallel hook bases (2) and a hook frame (3) located between the hook bases (2). The outer edge of the hook base (2) is provided with an elongated hole for adjusting the distance between the hook frame (3). The locking anti-tension mechanism includes an anti-tension top screw (4) located outside the hook claw seat (2) and a hook claw top screw (5) located at the end of the hook claw frame (3). The anti-tension top screw (4) passes through the elongated hole and abuts against the hook claw frame (3), while the hook claw top screw (5) abuts against the outer end of the fan (6) vertically. The spacing of the hook claw frame (3) is adjusted by the anti-tension top screw (4) to ensure that the hook claw top screw (5) is tightly fixed to the outer end of the fan (6). The screwing thrust mechanism includes a screw rod (1), which passes through two layers of hook seats (2) and abuts against the center of the motor (7) rotor. By screwing the screw rod (1), the fan (6) is removed in the opposite direction to the motor (7) rotor.

2. The novel pin-type motor fan disassembly puller as described in claim 1, characterized in that, The connection between the thrust screw (1) and the claw seat (2) is welded with a reinforcing ring.

3. The novel pin-type motor fan disassembly puller as described in claim 1, characterized in that, The hook screw (5) is inserted into the machining hole at the outer end of the fan (6), and the outer end has a machining hole with a depth of 1±0.5mm.

4. The novel pin-type motor fan disassembly puller as described in claim 1, characterized in that, The frame body is divided into a two-claw new puller or a three-claw new puller, which is selected according to the number of processing holes and the tightness when the fan (6) is removed.

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