Air pre-heater motor gear dismounting tool

Abstract

The utility model belongs to the technical field of motor maintenance, and particularly discloses an air pre-heater motor gear dismounting tool which comprises a supporting bolt, a first positioning plate and a second positioning plate, the first positioning plate is provided with a first receding groove and a first butt joint groove, and the second positioning plate is provided with a second receding groove and a second butt joint groove. The first positioning plate and the second positioning plate are spliced to form a positioning round hole and a clamping groove, a clamping plate used for connecting the first positioning plate and the second positioning plate is clamped in the clamping groove, jackscrew holes are further formed in the first positioning plate and the second positioning plate, and the supporting bolt is in threaded connection with the jackscrew holes. Firstly, the first positioning plate and the second positioning plate are clamped on the lower side of the gear, the positioning round holes can make space for the motor shaft, then the first positioning plate and the second positioning plate are fixed through the clamping plate, then the supporting bolt is screwed, the supporting bolt is used for supporting the motor or a specially-configured base, and the gear is detached from the motor shaft through counter-acting force. Usage is convenient, stability is high and cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor maintenance, in particular to a tool for disassembling gears of an air preheater motor. Background Art

[0002] The air preheaters in thermal power plants are of two types: tubular and rotary. The 60MW boiler is tubular, while the 135MW, 300MW, and 600MW boilers are rotary. A single rotary air preheater of a 330MW unit is usually designed with two drive motors. During use, the seal position on the load side of the drive motor is heated for a long time. As the system runs longer, the shaft seal on the load side of the air preheater motor ages and wears out the shaft diameter, resulting in gap leakage between the shaft and the shaft seal. The insulation of the motor winding is damaged after being immersed in oil, which poses a great safety hazard to the operation of the unit. It is difficult to disassemble the gears when dealing with oil leakage in the air preheater drive motor, and there is a greater risk of equipment damage.

[0003] The Chinese invention patent with the existing patent publication number CN104647274A provides a diesel engine oil pump gear disassembly device, which uses a support plate, which is fixed to the lead screw by a lead screw nut, and three adjustable support bolts are evenly arranged along the axial direction of the support plate and on the same circumference, and the adjustable support bolts are fixed to the support plate by locking nuts. It uses the principle of spiral transmission, and the working point is converted from the previous point contact to surface contact, the working area is increased, the work is stable, the disassembly force is large, and the situation of uneven focus, large impact, and inability to use large torque is solved; however, the convenience of positioning and disassembly of the gear during disassembly needs to be improved. Utility Model Content

[0004] Aiming at the problems that the gears are difficult to disassemble when the motor oil seepage is treated in the prior art, and there is a greater risk of equipment damage, and the convenience of positioning and disassembly of the gears during disassembly needs to be improved, a tool for disassembling the gears of the air preheater motor is proposed. The utility model provides the following technical solutions:

[0005] A tool for disassembling gears of an air preheater motor comprises a supporting top bolt, a first positioning plate and a second positioning plate, wherein the first positioning plate is provided with a first clearance groove and a first docking groove, and the second positioning plate is provided with a second clearance groove and a second docking groove. After the first positioning plate and the second positioning plate are spliced, the first clearance groove and the second clearance groove are spliced ​​to form a positioning circular hole for supporting the gear, and the first docking groove and the second docking groove are spliced ​​to form a clamping groove, in which a clamping plate for connecting the first positioning plate and the second positioning plate is clamped, and both ends of the clamping plate are respectively covered on the first positioning plate and the second positioning plate, and the first positioning plate and the second positioning plate are also provided with top screw holes, and the supporting top bolts are threadedly connected to the top screw holes.

[0006] Preferably, mounting holes are provided on the first docking groove and the second docking groove, and fastening holes are provided on the card plate corresponding to the mounting holes, and the card plate is connected to the first positioning plate or the second docking groove by fastening bolts passing through the fastening holes and the mounting holes.

[0007] Preferably, the first docking groove and the second docking groove are arranged perpendicular to the joint surfaces of the first positioning plate and the second positioning plate.

[0008] Preferably, the number of the first docking grooves is equal to the number of the second docking grooves, and a first docking groove is provided on each side of the groove top thread hole.

[0009] Preferably, the first docking groove and the second docking groove are square grooves, and the clamping plate is square.

[0010] Preferably, the first positioning plate and the second positioning plate are square.

[0011] Preferably, the outer contour of the board surface after the first positioning plate and the second positioning plate are spliced ​​together is square.

[0012] Preferably, three or four supporting bolts are arranged at equal intervals around the positioning circular hole.

[0013] Preferably, the first docking groove and the second docking groove are T-shaped grooves, the cross section of the card plate is T-shaped, and the card plate is inserted into the first docking groove and the second docking groove.

[0014] Preferably, the first positioning plate and the second positioning plate are provided with insertion holes on their sides, and the first positioning plate and the second positioning plate are fastened and locked by inserting U-shaped pins into the insertion holes.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The first positioning plate and the second positioning plate can be clamped on the lower side of the gear, and the positioning circular hole can make room for the motor shaft. Then the first positioning plate and the second positioning plate are fixed by the clamping plate. After that, the supporting bolts are screwed to support the motor or a specially configured base. The gear can be removed from the motor shaft by the reaction force. It is easy to use, has high stability and low cost.

[0017] 2. The upper end surface of the card plate is flush with the upper end surfaces of the first positioning plate and the second positioning plate. The fastening bolts are hexagon socket bolts, and the fastening holes are countersunk holes. After tightening, the upper end surface of the fastening bolts is flush with or lower than the upper end surface of the card plate to reduce scratches on the engine;

[0018] 3. There are 4 supporting bolts arranged at equal intervals around the circumference of the positioning circular hole, and the 4 supporting bolts are distributed in a rectangular shape, which can achieve surface contact and make the threading process more stable. When disassembling the gear, the method of threading in diagonal positions successively can be adopted to improve the straightness and stability of the gear movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of embodiment 1 of the utility model;

[0020] Figure 2 It is a three-dimensional structural schematic diagram of embodiment 2 of the utility model;

[0021] In the accompanying drawings, 1, first positioning plate; 11, first clearance groove; 12, first docking groove; 13, first support pad; 14, plug hole; 2, second positioning plate; 21, second clearance groove; 31, first clamping plate; 32, second clamping plate; 4, fastening bolt; 5, positioning circular hole; 6, supporting bolt; 7, T-plate; 8, U-shaped pin. DETAILED DESCRIPTION

[0022] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0023] Example 1

[0024] like Figure 1 As shown, an air preheater motor gear disassembly tool comprises a top bolt 6, a first positioning plate 1 and a second positioning plate 2, wherein the first positioning plate 1 is provided with a first clearance groove 11 and a first docking groove 12, and the second positioning plate 2 is provided with a second clearance groove 21 and a second docking groove, wherein the first clearance groove 11 and the second clearance groove 21 are both semicircular depressions formed by inward depression of the side, and after the first positioning plate 1 and the second positioning plate 2 are spliced, the first clearance groove 11 and the second clearance groove 21 are spliced ​​to form a positioning circular hole 5 for supporting the gear, and the first docking groove 12 and the second docking groove are spliced ​​to form a slot, in which a device for connecting the first and second docking grooves is spliced. A clamping plate of a positioning plate 1 and a second positioning plate 2, both ends of the clamping plate are respectively covered on the first positioning plate 1 and the second positioning plate 2, and top screw holes are also provided on the first positioning plate 1 and the second positioning plate 2, and the support bolts 6 are threadedly connected to the top screw holes. When in use, the first positioning plate 1 and the second positioning plate 2 are first clamped on the lower side of the gear, and the positioning circular hole 5 can make room for the motor shaft, and then the first positioning plate 1 and the second positioning plate 2 are fixed by the clamping plate, and then the support bolts 6 are screwed to support the motor or a specially configured base, and the gear is removed from the motor shaft through the reaction force. It is easy to use, has high stability and low cost.

[0025] Specifically, mounting holes are provided on the first docking groove 12 and the second docking groove, and fastening holes are provided on the corresponding mounting holes on the card plate. The card plate is connected to the first positioning plate 1 or the second docking groove by passing the fastening bolts 4 through the fastening holes and the mounting holes; and the upper end surface of the card plate is flush with the upper end surfaces of the first positioning plate 1 and the second positioning plate 2, and the fastening bolts 4 are hexagon socket bolts, and the fastening holes are countersunk holes. After tightening, the upper end surface of the fastening bolts 4 is flush with or lower than the upper end surface of the card plate to reduce scratches on the engine.

[0026] Specifically, the first docking groove 12 and the second docking groove are arranged perpendicular to the joint surface of the first positioning plate 1 and the second positioning plate 2; the number of the first docking grooves 12 and the second docking grooves is equal, and a first docking groove 12 is arranged on each side of the groove top thread hole, and two corresponding clamping plates are also arranged, namely the first clamping plate 31 and the second clamping plate 32; the first docking groove 12 and the second docking groove are square grooves, and the clamping plates are square; the first positioning plate 1 and the second positioning plate 2 are square; after the first positioning plate 1 and the second positioning plate 2 are spliced ​​together, the outer contour of the plate surface is square, which saves cost and makes the plate surface regular; the first positioning plate 1 and the second positioning plate 2 can also be set to be semicircular, and they are circular after splicing.

[0027] Specifically, four supporting bolts 6 are arranged at equal intervals around the positioning circular hole 5, and the four supporting bolts 6 are distributed in a rectangular shape, which can achieve surface contact and make the threading process more stable. When disassembling the gear, the method of threading in diagonal positions successively can be adopted to improve the straightness and stability of the gear movement.

[0028] Example 2

[0029] like Figure 2 As shown, the difference from Example 1 is that the first docking groove 12 and the second docking groove are T-shaped grooves, the clamping plate is a T-shaped plate 7, and the cross-section is T-shaped. The clamping plate is inserted into the first docking groove 12 and the second docking groove, which can achieve limiting in the normal direction of the plate surface, and connect the first positioning plate 1 and the second positioning plate 2 by friction or interference fit.

[0030] Furthermore, the first positioning plate 1 and the second positioning plate 2 are provided with a plug hole 14 on the side, and the first positioning plate 1 and the second positioning plate 2 are connected and locked by inserting a U-shaped pin 8 into the plug hole 14, which can improve the tightness of the connection.

[0031] Furthermore, a first support pad 13 is fixedly connected to the upper side of the first clearance groove 11 of the first positioning plate 1, and a second support pad is fixedly connected to the upper side of the second clearance groove 21 of the second positioning plate 2. The first support pad 13 and the second support pad are semi-circular and form an annular pad after docking. The rubber material is used to provide indirect support for the gears.

Claims

1. An air preheater motor gear disassembly tool, characterized in that: The invention comprises a supporting bolt (6), a first positioning plate (1) and a second positioning plate (2), wherein the first positioning plate (1) is provided with a first clearance groove (11) and a first docking groove (12), and the second positioning plate (2) is provided with a second clearance groove (21) and a second docking groove. After the first positioning plate (1) and the second positioning plate (2) are spliced, the first clearance groove (11) and the second clearance groove (21) are spliced ​​to form a positioning circular hole (5) for supporting the gear, and the first docking groove (12) and the second docking groove are spliced ​​to form a clamping groove, in which a clamping plate for connecting the first positioning plate (1) and the second positioning plate (2) is clamped, and two ends of the clamping plate are respectively covered on the first positioning plate (1) and the second positioning plate (2), and the first positioning plate (1) and the second positioning plate (2) are also provided with a top screw hole, and the supporting bolt (6) is threadedly connected to the top screw hole.

2. The air preheater motor gear disassembly tool according to claim 1 is characterized in that: The first docking groove (12) and the second docking groove are provided with mounting holes, and the card plate is provided with fastening holes corresponding to the mounting holes. The card plate is connected to the first positioning plate (1) or the second docking groove by fastening bolts (4) passing through the fastening holes and the mounting holes.

3. The air preheater motor gear disassembly tool according to claim 2 is characterized in that: The first docking groove (12) and the second docking groove are arranged perpendicular to the joint surface of the first positioning plate (1) and the second positioning plate (2).

4. The air preheater motor gear disassembly tool according to claim 3 is characterized in that: The number of the first docking grooves (12) is equal to that of the second docking grooves, and a first docking groove (12) is provided on each side of the groove top thread hole.

5. The air preheater motor gear disassembly tool according to claim 2 is characterized in that: The first docking groove (12) and the second docking groove are square grooves, and the clamping plate is square.

6. The air preheater motor gear disassembly tool according to claim 5, characterized in that: The first positioning plate (1) and the second positioning plate (2) are square.

7. The air preheater motor gear disassembly tool according to claim 6, characterized in that: After the first positioning plate (1) and the second positioning plate (2) are spliced ​​together, the outer contour of the plate surface is a square.

8. The air preheater motor gear disassembly tool according to claim 1 is characterized in that: Three or four of the top support bolts (6) are arranged at equal intervals in the circumferential direction around the positioning circular hole (5).

9. The air preheater motor gear disassembly tool according to claim 1, characterized in that: The first docking groove (12) and the second docking groove are T-shaped grooves, the cross section of the card plate is T-shaped, and the card plate is inserted into the first docking groove (12) and the second docking groove.

10. The air preheater motor gear disassembly tool according to claim 9, characterized in that: The first positioning plate (1) and the second positioning plate (2) are provided with insertion holes (14) on their sides, and the first positioning plate (1) and the second positioning plate (2) are connected to each other by inserting a U-shaped latch (8) into the insertion holes (14) to achieve docking and locking.

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