Disassembling tool special for sheet type motor fan

Abstract

The utility model discloses a special dismounting tool for a slice type motor fan, which comprises a slice pulling plate, a pulling seat, a fixed screw rod, a pulling rod and an ejector rob, the slice pulling plate is of a square structure formed by combining two rectangular iron plates, a combined round hole is arranged in the middle of the slice pulling plate, symmetrical connecting screw holes I are arranged on the left side and the right side of the slice pulling plate, and the connecting screw holes I are connected with the ejector rob. One end of the pull rod is connected with the first connecting screw hole, horizontal steel pipes are welded to the upper edge and the lower edge of the sheet pull plate, the two fixing lead screws penetrate through the upper steel pipe and the lower steel pipe and are fixed through nuts, the pull base is a rectangular steel plate, a second horizontal connecting screw hole is formed in the pull base in the thickness direction, and the ejector rod is screwed into the second connecting screw hole. Grooves are formed in the left outer edge and the right outer edge of the long edge towards the center position, and the other end of the pull rod penetrates through the grooves and is fixed through nuts. The fan blade structure is convenient to use, the fan blades are balanced in stress and easy to disassemble, damage to equipment caused by uneven stress such as knocking and prying is reduced, and working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of disassembly tools, and in particular relates to a special disassembly tool for a thin-sheet motor fan. Background Art

[0002] With the continuous progress of society, high-power motors are now used in more and more industries. The power of high-power motors is generally hundreds of kilowatts or more, the diameter of the motor fan is generally hundreds of millimeters, and the weight can reach hundreds of kilograms. Motor overhaul usually requires the motor fan to be disassembled before subsequent work can be carried out. At present, workers disassemble motor fans by hammering on both sides with a hammer or prying with a crowbar. The gap between the motor fan and the rear end cover of the motor is generally only about 20 millimeters, which is relatively narrow, and the fan diameter is large. The ordinary disassembly puller has a small contact surface and a large thickness, and cannot be set up for use.

[0003] Most motor fans are cast iron parts, which are hard and lack toughness. If the fan and the motor shaft fit tightly, this type of disassembly method is difficult to quickly disassemble the fan and is very likely to cause fan damage. In order to improve the safety and efficiency of high-power motor fan disassembly, a set of highly targeted special disassembly tools is urgently needed. Summary of the invention

[0004] In order to solve the above problems, the utility model discloses a special disassembly tool for a thin-film motor fan. The tool is easy to use, has balanced force on the fan blades, is easy to disassemble, reduces damage to the equipment caused by uneven force such as knocking and prying, and greatly improves work efficiency.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A special disassembly tool for a thin-film motor fan comprises a thin-film pull plate, a pull seat, a fixed screw rod, a pull rod and a push rod. The thin-film pull plate is a square structure composed of two rectangular iron plates. A combined circular hole is provided in the middle of the thin-film pull plate. A symmetrical connecting screw hole is provided on the left and right sides of the thin-film pull plate. One end of the pull rod is connected to the connecting screw hole. Horizontal steel pipes are welded to the upper and lower edges of the thin-film pull plate. Two fixed screw rods pass through the upper and lower steel pipes and are fixed with nuts. The pull seat is a rectangular steel plate. Two horizontal connecting screw holes are provided in the thickness direction of the pull seat. The push rod is screwed into the two connecting screw holes. Grooves are provided along the left and right outer edges of the long sides toward the center. The other end of the pull rod passes through the groove and is fixed with a nut.

[0007] As a supplement to the present invention, the thin sheet pull plate is square.

[0008] As a supplement to the present invention, the thickness of the thin sheet pull plate is 10 mm.

[0009] As a supplement to the present invention, the outer diameter of the fixed screw rod is smaller than the inner diameter of the steel pipe.

[0010] As a supplement to the present invention, the outer diameter of the pull rod is smaller than the height of the groove.

[0011] As a supplement to the present invention, a conical tip is provided at the front end of the push rod.

[0012] As a supplement to the present invention, a square or hexagonal connector is provided at the rear end of the push rod.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses a special disassembly tool for a thin-film motor fan, which can be operated by one person and is easy to use. The fan blades are evenly stressed and easy to disassemble, thereby reducing damage to the equipment caused by uneven stress such as knocking and prying, and greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a use effect diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the thin sheet pull plate described in the utility model.

[0017] Figure 3 It is a schematic diagram of the pull seat described in the utility model.

[0018] Figure 4 This is a schematic diagram of the pull rod described in the utility model.

[0019] Figure 5 It is a schematic diagram of the ejector rod described in the utility model.

[0020] List of Figure Symbols:

[0021] 1. Thin sheet pull plate, 2. Pull seat, 3. Fixed screw, 4. Pull rod, 5. Push rod, 6. Combined round hole, 7. Connecting screw hole one, 8. Steel pipe, 9. Connecting screw hole two, 10. Groove, 11. Conical tip, 12. Connecting head, 13. Motor, 14. Fan blade. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] As shown in the figure, the special disassembly tool for the thin-film motor fan described in the utility model includes a 800*800*10mm square thin-film pull plate 1, a pull seat 2, two M20*1000 fixed screws 3, two M25*500 pull rods 4 and a high-carbon steel top rod 5. The thin-film pull plate 1 is a square structure composed of two rectangular iron plates. A combined circular hole 6 (composed of two semicircles, with a hole diameter slightly larger than the diameter of the motor shaft) is provided in the middle of the thin-film pull plate 1. Symmetrical connecting screw holes 7 are provided on the left and right sides of the thin-film pull plate 1. The pull rod One end of 4 is connected to a connecting screw hole 7, the upper and lower edges of the thin-sheet pull plate are welded with a DN30 horizontal steel pipe 8, two fixed screw rods 3 pass through the upper and lower steel pipes 8 and are fixed with nuts, the pull seat 2 is a rectangular steel plate of 800*70*20, and a horizontal connecting screw hole 2 9 is provided in the thickness direction of the pull seat 2. The push rod 5 is screwed into the connecting screw hole 2 9, and a 300*30*20 groove 10 is provided along the left and right outer edges of the long side toward the center, and 20mm is left on the upper and lower sides. The other end of the pull rod 4 passes through the groove 10 and is fixed with a nut.

[0024] Take a kilowatt motor used by the water company as an example: the gap between the motor fan and the rear end cover is 30mm, so a 10mm thick steel plate is selected for easy installation; the fan diameter is about 600mm, in order to increase its force-bearing area and facilitate the installation of a pull rod on the outside of its edge, a thin sheet pull plate 1 with a square side length of 800mm should be selected; the diameter of the motor shaft is 150mm, so a circular hole with a diameter of more than 150mm needs to be opened at the center of the thin sheet pull plate 1, and it is divided into two halves along the vertical center line of the steel plate for easy installation; due to the narrow gap between the motor fan and the rear end cover, there is no installation space for the fixing nut of the pull rod 4 at the steel plate, and holes need to be opened at the left and right edges of the steel plate to fix the pull rod 4; the two semicircular arc steel plates are installed in place and need to be effectively connected into a whole to ensure balanced force on the left and right sides. Therefore, the DN30 steel pipe 8 needs to be firmly welded on the upper and lower sides of the steel plate to facilitate the connection and fixing of the screw rod 3.

[0025] The front end of the push rod 5 of the utility model is provided with a conical tip 11, which is aligned with the central hole of the end of the motor shaft when in use, and the rear end of the push rod 5 is provided with a four-corner or hexagonal connector 12, which is convenient for being driven to rotate by a tool.

[0026] When in use, first put the left and right parts of the thin-sheet pull plate 1 onto the shaft between the motor fan and the motor end cover, insert the fixing screw 3 into the upper and lower steel pipes 8 respectively, and put nuts on the two ends of the upper and lower screws respectively; screw the two pull rods 4 clockwise into the left and right connecting screw holes 7 of the pull plate and install them in place; screw the high-carbon steel push rod 5 (including the tapered tip) clockwise into the pull seat connecting screw hole 2 9 to the appropriate position; install the pull seat 2 between the two pull rods 4 and put on the nuts; adjust the thin-sheet pull plate 1 to contact the fan with the maximum area, and be careful not to let the pull plate get stuck on the motor shaft; adjust the pull seat 2 so that the push rod 5 is parallel to the motor shaft; tighten the nuts that fix the screw 3 and the pull rod 4; gradually screw in the push rod 5 clockwise, and the motor fan will be successfully disassembled. The device can be operated by one person, is easy to use, has balanced force on the fan blades, is easy to disassemble, reduces the damage to the equipment caused by uneven force such as knocking and prying, and greatly improves work efficiency.

[0027] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. Special disassembly tool for sheet-type motor fan, characterized by: The invention comprises a thin sheet pull plate (1), a pull seat (2), a fixed screw rod (3), a pull rod (4) and a push rod (5), wherein the thin sheet pull plate (1) is a square structure formed by combining two rectangular iron plates, a combined circular hole (6) is provided in the middle of the thin sheet pull plate (1), symmetrical connecting screw holes (7) are provided on the left and right sides of the thin sheet pull plate (1), one end of the pull rod (4) is connected to the connecting screw hole (7), the upper and lower edges of the thin sheet pull plate are welded with horizontal steel pipes (8), two fixed screw rods (3) pass through the upper and lower steel pipes (8) and are fixed with nuts, the pull seat (2) is a rectangular steel plate, a horizontal connecting screw hole (9) is provided in the thickness direction of the pull seat (2), the push rod (5) is screwed into the connecting screw hole (9), a groove (10) is provided along the left and right outer edges of the long side toward the center, and the other end of the pull rod (4) passes through the groove (10) and is fixed with a nut.

2. The special disassembly tool for a thin-film motor fan according to claim 1, characterized in that: The thin sheet pull plate (1) is square.

3. The special disassembly tool for a thin-film motor fan according to claim 1, characterized in that: The thickness of the thin sheet pull plate (1) is 10 mm.

4. The special disassembly tool for a thin-film motor fan according to claim 1, characterized in that: The outer diameter of the fixed screw rod (3) is smaller than the inner diameter of the steel pipe (8).

5. The special disassembly tool for a thin-film motor fan according to claim 1, characterized in that: The outer diameter of the pull rod (4) is smaller than the height of the groove (10).

6. The special disassembly tool for a thin-film motor fan according to claim 1, characterized in that: The front end of the push rod (5) is provided with a conical tip (11).

7. The special disassembly tool for a thin-film motor fan according to claim 1, characterized in that: The rear end of the push rod (5) is provided with a square or hexagonal connector (12).

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