Special tool for disassembling cooling fan of high-voltage motor

Abstract

The utility model discloses a special tool for disassembling a cooling fan of a high-voltage motor, which relates to the technical field of motor maintenance tools and comprises a top plate, a support column and a plurality of turn buckles. The pillar is connected to one side of the middle of the top plate, the tail end of the pillar abuts against a spindle of the motor, the first end of the turn buckle is detachably connected with the edge of the top plate, and the second end of the turn buckle is detachably connected with the cooling fan. The top plate and the cooling fan are tensioned through the turn buckles, the cooling fan is close to the top plate, the position of the top plate is kept through the abutting limiting effect of the supporting columns, and therefore the cooling fan is detached; and a multi-turn-buckle structure is adopted, so that the dismounting torque is balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor maintenance tools, in particular to a special tool for disassembling the cooling fan of a high-voltage motor. Background Technique

[0002] For the disassembly and overhaul of a high-voltage motor, the first step is to remove the cooling fan. According to its mechanism, the cooling fan needs to discharge the heat inside the motor. To reduce the total mass of the motor and reduce energy consumption, except for the shaft sleeve and a small part of its extension with relatively high strength, other parts such as the fan blades and tie bars are made of thinner materials with lower strength. At the same time, the distance between the cooling fan and the end cover is very close. According to general design, the cooling fan can be pushed out from the shaft by a setscrew at the setscrew hole position on the extension part of the shaft sleeve. In fact, in many cases, it is impossible to complete the removal of the cooling fan using the setscrew. Using a three-jaw puller for disassembling the bearing, on the one hand, it is not easy to use because the distance between the cooling fan and the end cover is very close, and on the other hand, it is very easy to damage the cooling fan because the edge strength of the fan is small. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problem that the cooling fan of a high-voltage motor is not easy to disassemble in the prior art, and provide a special tool for disassembling the cooling fan of a high-voltage motor.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A special tool for disassembling the cooling fan of a high-voltage motor includes a top plate, a support column and a plurality of turnbuckles; the support column is connected to one side of the middle of the top plate, the end of the support column abuts against the main shaft of the motor, the first end of the turnbuckle is detachably connected to the edge of the top plate, and the second end of the turnbuckle is detachably connected to the cooling fan.

[0006] Further, the turnbuckle includes an intermediate turnbuckle and two screw rods, and the two screw rods pass through the two end walls of the intermediate turnbuckle and are threadedly connected with the intermediate turnbuckle.

[0007] Further, a first strip hole for the first end of the turnbuckle to pass through is provided at the edge of the top plate, and a nut is provided outside the end of the first end of the turnbuckle.

[0008] Further, the second end of the turnbuckle is threadedly connected to the cooling fan.

[0009] Further, it further includes a pull plate, and the pull plate is placed on the side of the cooling fan facing the motor; a second strip hole for the second end of the turnbuckle to pass through is provided at the edge of the pull plate, and a nut is provided outside the end of the second end of the turnbuckle.

[0010] Further, the pull plate includes an arc-shaped cross-shaft part and a plurality of ears connected to the arc-shaped cross-shaft part, and the second strip hole is provided on the ears.

[0011] Furthermore, both the turnbuckle and the nut on the outer side of its end are connected by threads.

[0012] Furthermore, both the turnbuckle and the nut on the outer side of its end are fixedly connected; a first groove for restricting the rotation of the nut is provided on the side of the top plate, and the first strip-shaped hole corresponds to the inside of the first groove; a second groove for restricting the rotation of the nut is provided on the side of the pull plate, and the second strip-shaped hole corresponds to the inside of the second groove.

[0013] Furthermore, one end of the first strip-shaped hole far from the center of the top plate extends to the edge of the top plate; one end of the second strip-shaped hole far from the center of the pull plate extends to the edge of the pull plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The present utility model uses a turnbuckle to tighten the top plate and the cooling fan, so that the cooling fan and the top plate are close to each other, and the position of the top plate is maintained by the abutting and limiting action of the support column, thereby realizing the disassembly of the cooling fan; using a turnbuckle as the disassembly force output structure, the material is convenient, light and practical; adopting a multi-turnbuckle structure, applying force at multiple places, balancing the disassembly torque; the setting of the strip-shaped hole can be applied to the disassembly of motor cooling fans of different specifications, with strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of Embodiment 1.

[0017] Figure 2 It is a schematic diagram of the top plate of Embodiment 1.

[0018] Figure 3 It is a schematic structural diagram of Embodiment 2.

[0019] Figure 4 It is a schematic diagram of the pull plate of Embodiment 2.

[0020] Figure 5 It is a schematic structural diagram of Embodiment 3.

[0021] Figure 6 It is a schematic diagram of the top plate of Embodiment 3.

[0022] Figure 7 It is a schematic diagram of the pull plate of Embodiment 3.

[0023] In the figure: 1, top plate; 2, support column; 3, turnbuckle; 4, pull plate;

[0024] 11, first strip-shaped hole; 12, first groove;

[0025] 31, intermediate turnbuckle; 32, screw;

[0026] 41. Arc-shaped cross-axis part; 42. Ear part; 43. Second strip-shaped hole; 44. Second groove. Detailed implementation manner

[0027] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0028] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" that may appear should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object of "provided with" can be a part of the main body, or can be arranged separately from the main body and connected to the main body, and this connection can be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0030] The following further details the present utility model in conjunction with embodiments.

[0031] Specific embodiment 1 of the special tool for disassembling the cooling fan of a high-voltage motor provided by the present utility model:

[0032] This embodiment is suitable for disassembling the cooling fan with a set screw hole, that is, a threaded hole. Please refer to Figure 1 and Figure 2 , the special tool for disassembling the cooling fan of a high-voltage motor includes a top plate 1, a support column 2 and a plurality of turnbuckles 3; the support column 2 is connected to one side of the middle of the top plate 1, the end of the support column 2 abuts against the main shaft of the motor, the support column 2 is a round steel column, and the middle part of the top plate 1 is used as the stress area and is connected to the support column 2.

[0033] In this embodiment, the number of turnbuckles 3 is two; the turnbuckle 3 includes an intermediate turnbuckle 31 and two screw rods 32, the intermediate turnbuckle 31 is an annular structure, and the two screw rods 32 pass through the two end walls of the intermediate turnbuckle 31 and are threadedly connected to the intermediate turnbuckle 31.

[0034] The first end of the turnbuckle 3 is detachably connected to the edge of the top plate 1. Specifically, a first elongated hole 11 for the first end of the turnbuckle 3 to pass through is provided at the edge of the top plate 1, and a nut is provided outside the end of the first end of the turnbuckle 3. In this embodiment, the nut is threadedly connected to the screw rod 32 of the turnbuckle 3, and the width of the nut is greater than the width of the first elongated hole 11. After the screw rod 32 is connected to the nut, the nut is stuck outside the top plate 1.

[0035] The second end of the turnbuckle 3 is detachably connected to the cooling fan. In this embodiment, the second end of the turnbuckle 3 is threadedly connected to the set screw hole of the cooling fan.

[0036] During use, thread the screw rod 32 at the second end of the turnbuckle 3 into the set screw hole of the cooling fan, place the top plate 1 and the support column 2 in place, pass the screw rod 32 at the first end of the turnbuckle 3 through the first elongated hole 11 of the top plate 1, and install and tighten the nut on the screw rod 32 at the first end of the turnbuckle 3. Then alternately rotate the middle basket 31 of the two turnbuckles 3 to make the cooling fan on the outside of the main shaft approach the top plate 1 and gradually separate from the main shaft, thereby realizing the disassembly of the cooling fan.

[0037] Specific embodiment 2 of the special tool for disassembling the cooling fan of the high-voltage motor provided by the present utility model:

[0038] This embodiment is applicable to the disassembly of a cooling fan without a set screw hole. Please refer to Figure 2 、 Figure 3 and Figure 4 , since the cooling fan to be disassembled has no set screw hole, the second end of the turnbuckle 3 cannot be directly connected to the cooling fan. In this embodiment, a pull plate 4 is provided, and the pull plate 4 is placed on the side of the cooling fan facing the motor; a second elongated hole 43 for the second end of the turnbuckle 3 to pass through is provided at the edge of the pull plate 4, and a nut is provided outside the end of the second end of the turnbuckle 3. Specifically, the nut at this end is located outside the screw rod 32 at this end.

[0039] Specifically, the pull plate 4 includes an arc-shaped cross-axis part 41 and a plurality of ear parts 42 connected to the arc-shaped cross-axis part 41. In this embodiment, the number of ear parts 42 is two, and the second elongated holes 43 are provided on both ear parts 42. The arc-shaped cross-axis part 41 can bypass the main shaft and be supported inside the cooling fan to realize the clamping and limiting of the cooling fan. In this embodiment, the turnbuckle 3 and the nut outside its end are both threadedly connected.

[0040] In use, first pass the pull plate 4 through the gap between the blades of the cooling fan impeller so that it enters the inner side of the cooling fan. The inner side of the arc-shaped shaft-crossing part 41 of the pull plate 4 is attached to the outer side of the motor main shaft, and the ear part 42 corresponds to the gap between the impeller blades. Pass the second end screw 32 of the turnbuckle 3 through the second strip hole 43 of the ear part 42 of the pull plate 4 and install a nut on the outer side of this end. Place the top plate 1 and the support column 2 in place. Pass the first end screw 32 of the turnbuckle 3 through the first strip hole 11 of the top plate 1, install a nut on the first end screw 32 of the turnbuckle 3 and tighten it; then alternately rotate the middle turnbuckle 31 of the two turnbuckles 3 to make the cooling fan on the outer side of the main shaft approach the top plate 1, thereby realizing the disassembly of the cooling fan.

[0041] Specific embodiment 3 of the special tool for disassembling the cooling fan of a high-voltage motor provided by the present utility model:

[0042] Please refer to Figure 5 、 Figure 6 and Figure 7 This embodiment is different from Embodiment 2 in that the nut and the turnbuckle 3 are not threadedly connected; instead, the turnbuckle 3 and the nut on the outer side of its end are fixedly connected; a first groove 12 for restricting the rotation of the nut is provided on the side of the top plate 1 facing away from the pull plate 4, and the first strip hole 11 corresponds to the inside of the first groove 12; a second groove 44 for restricting the rotation of the nut is provided on the side of the pull plate 4 facing away from the top plate 1, and the second strip hole 43 corresponds to the inside of the second groove 44.

[0043] The outer shape of the nut is a hexagonal prism. The widths of the first groove 12 and the second groove 44 are adapted to the nut. When part of the nut is located in the groove, the nut cannot rotate. In this way, when rotating the middle turnbuckle 31, the rotation of the screw 32 and the nut fixedly connected to the screw 32 can be avoided. The nut and the screw 32 will not slip and rotate with the middle turnbuckle 31. By rotating the middle turnbuckle 31, the cooling fan can be effectively made to approach the top plate 1, and the cooling fan can be disassembled quickly and efficiently.

[0044] In Embodiment 2, after the pull plate 4 is placed inside the cooling fan, it needs to be connected to the second end of the turnbuckle 3. Since the space is narrow and it is not easy to operate, in this embodiment, the first strip hole 11 extends from the end far from the center of the top plate 1 to the edge of the top plate 1 to form an opening; the second strip hole 43 extends from the end far from the center of the pull plate 4 to the edge of the pull plate 4 to form an opening.

[0045] In this way, the screw 32 for fixedly connecting the nut can be inserted into the strip hole from the opening of the side strip hole, achieving the effect of passing the screw 32 through the pull plate 4 and the top plate 1, so that the pull plate 4 can easily cooperate with the second end of the turnbuckle 3. During operation, pass the second end screw 32 of the turnbuckle 3 through the gap between the impeller blades and insert it into the second strip hole 43 from the opening at the end of the pull plate 4, and make the nut at this end located on the side of the pull plate 4 facing the motor enter the second groove 44, and the operation is more relaxed and convenient.

[0046] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A special tool for disassembling a high-voltage motor cooling fan, characterized in that: It comprises a top plate (1), a support (2) and a plurality of basket bolts (3); the support (2) is connected to one side of the middle of the top plate (1), the end of the support (2) abuts against the main shaft of the motor, the first end of the basket bolt (3) is detachably connected to the edge of the top plate (1), and the second end of the basket bolt (3) is detachably connected to the cooling fan.

2. The special tool for disassembling a high-voltage motor cooling fan according to claim 1, characterized in that: The flower basket bolt (3) comprises an intermediate flower basket (31) and two screw rods (32), wherein the two screw rods (32) pass through the two end walls of the intermediate flower basket (31) and are connected to the intermediate flower basket (31) by threads.

3. The special tool for disassembling the high-voltage motor cooling fan according to claim 2, characterized in that: The edge of the top plate (1) is provided with a first strip-shaped hole (11) for the first end of the turnbuckle bolt (3) to pass through, and a nut is provided on the outer side of the first end of the turnbuckle bolt (3).

4. The special tool for disassembling a high-voltage motor cooling fan according to claim 1, 2 or 3, characterized in that: The second end of the turnbuckle bolt (3) is threadedly connected to the cooling fan.

5. The special tool for disassembling a high-voltage motor cooling fan according to claim 3, characterized in that: It also includes a pull plate (4), which is placed on the side of the cooling fan facing the motor; the pull plate (4) is provided with a second strip hole (43) on the edge of the pull plate (4) for the second end of the turnbuckle bolt (3) to pass through, and a nut is provided on the outer side of the second end of the turnbuckle bolt (3).

6. The special tool for disassembling the high-voltage motor cooling fan according to claim 5, characterized in that: The pulling plate (4) comprises an arc-shaped cross-axis portion (41) and a plurality of ears (42) connected to the arc-shaped cross-axis portion (41), and the ears (42) are provided with the second strip-shaped holes (43).

7. The special tool for disassembling a high-voltage motor cooling fan according to claim 5 or 6, characterized in that: The turnbuckle bolt (3) is threadedly connected to the nut on the outer side of its end.

8. The special tool for disassembling a high-voltage motor cooling fan according to claim 5 or 6, characterized in that: The turnbuckle bolt (3) and the nut on the outer side of the end thereof are fixedly connected; a first groove (12) for limiting the rotation of the nut is provided on the side of the top plate (1), and the first strip-shaped hole (11) corresponds to the first groove (12); a second groove (44) for limiting the rotation of the nut is provided on the side of the pull plate (4), and the second strip-shaped hole (43) corresponds to the second groove (44).

9. The special tool for disassembling a high-voltage motor cooling fan according to claim 8, characterized in that: One end of the first strip-shaped hole (11) away from the center of the top plate (1) extends to the edge of the top plate (1); and one end of the second strip-shaped hole (43) away from the center of the pull plate (4) extends to the edge of the pull plate (4).

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