Traction motor polisher

Abstract

The invention relates to the related technical field of traction motor maintenance, in particular to a traction motor polisher which comprises a wheel set and a traction motor installed at the input end of the wheel set, and a commutator is installed on a rotor of the traction motor; a side cover is arranged on the outer side wall of the traction motor; a grinding assembly is installed on the outer side wall of the bottom of the commutator and comprises a grinding box arranged on the outer side wall of the bottom of the commutator. The fixed plate is fixedly connected to the outer side wall of the grinding box, and one side of the fixed plate is connected with the inner wall of the traction motor; the grinding device is installed on the fixing frame at the bottom of the commutator through the fixing screw, the grinding stone is placed in the grinding box, the grinding stone is pressed on the surface of the commutator through the brush holder spring and the brush holder, when a locomotive wheelset rotates, the traction motor commutator is driven to rotate, the grinding stone grinds the surface of the commutator, manual grinding is converted into automatic grinding, and the grinding efficiency is improved. And the effects of rapidness, convenience, time saving and labor saving are realized, and the maintenance progress of the locomotive is greatly improved.

Description

Technical Field

[0001] This invention relates to the technical field of traction motor maintenance, and in particular to a traction motor grinder. Background Technology

[0002] The Dongfeng locomotive has six traction motors mounted on its wheelsets. The motor torque is transmitted to the wheelsets to generate traction. During locomotive operation, the commutators of the motors on the wheelsets are affected by mechanical, electrochemical, and electrothermal phenomena, causing sparks and burns on the commutator surfaces, affecting the normal operation of the motors. Because the motors are mounted on the wheelsets, the maintenance space is limited, making it extremely difficult to polish the commutator surface by opening the motor side cover. If manual polishing is performed, the locomotive must be constantly moved to complete the polishing, which is time-consuming, labor-intensive, delays locomotive operation, and poses safety risks to the polishing personnel. Therefore, it is necessary to design a traction motor commutator polishing device. Summary of the Invention

[0003] The purpose of this invention is to provide a traction motor grinder to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the basic solution provided by the present invention is as follows: a traction motor grinder, comprising a wheelset and a traction motor mounted on its input end, wherein a commutator is mounted on the rotor of the traction motor; a side cover is provided on the outer side wall of the traction motor; a grinding assembly is mounted on the bottom outer side wall of the commutator, the grinding assembly comprising a grinding box, a fixing plate, a grinding stone, a limiter, a brush holder, and a brush holder spring; the grinding box is disposed on the bottom outer side wall of the commutator; the fixing plate is fixedly connected to the outer side wall of the grinding box, and one side of the fixing plate is connected to the inner wall of the traction motor; the grinding stone is slidably connected to the upper end of the inner side wall of the grinding box; the limiter is slidably connected to the lower end of the inner side wall of the grinding box; the brush holder is disposed on the outer side wall of the grinding box, one end of which is connected to the bottom of the limiter; the brush holder spring is disposed at one end of the brush holder.

[0005] Preferably, the grinding box has dimensions of 110mm in length and 50mm in width.

[0006] Preferably, the fixing plate includes a plate body and a mounting hole, the plate body being fixedly connected to the outer side wall of the grinding box; the mounting hole is formed on the outer side wall of the plate body.

[0007] Preferably, the grinding stone has a cuboid structure.

[0008] Preferably, the limiter has a "T" shaped structure.

[0009] Preferably, an adjustment pad is provided between the limiter and the grinding stone.

[0010] Preferably, the brush holder includes a brush holder frame, a hinge rod, and a brush holder rod. The brush holder frame is fixedly connected to the outer side wall of the grinding box; the hinge rod is hinged to the inner side wall of the brush holder frame, with one end connected to one end of the brush holder spring; the brush holder rod is fixedly connected to one end of the hinge rod, with the other end abutting against the bottom surface of the limiter.

[0011] Preferably, there are two brush handles.

[0012] Compared with the prior art, the beneficial effects of the present invention are: By modifying the original traction motor commutator brush holder system, the brush boxes of the original commutator brush holder system were removed, and a grinding component was installed. The grinding component was welded to the brush holder system, and the grinding device was installed on the fixed frame at the bottom of the commutator with fixing screws. The grinding stone was placed in the grinding box, and the grinding stone was pressed against the commutator surface by the brush holder spring and the brush holder. When the locomotive wheelset rotates, it drives the traction motor commutator to rotate, and the grinding stone polishes the commutator surface. This transforms manual grinding into automatic grinding, which is fast, convenient, time-saving, and labor-saving, and greatly improves the efficiency of locomotive maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a traction motor grinder according to the present invention; Figure 2 A front view of an invention for a traction motor grinder; Figure 3 A side view of a traction motor grinder for invention. Detailed Implementation

[0014] The present invention will be further described in detail below through specific embodiments: The reference numerals in the accompanying drawings include: 10, wheelset; 20, traction motor; 30, commutator; 40, side cover; 50, grinding assembly; 51, grinding box; 52, fixing plate; 521, plate body; 522, mounting hole; 53, grinding stone; 54, limiter; 55, adjusting pad; 56, brush holder; 561, brush holder frame; 562, hinge rod; 563, brush holder rod; 57, brush holder spring.

[0015] Given the current technology, since the motor is mounted on the locomotive wheelset and the maintenance space is small, it is very difficult to polish the commutator surface by opening the motor side cover. If it is polished manually, the locomotive must keep moving to polish the commutator surface, which is time-consuming, labor-intensive, delays the use of the locomotive, and also poses safety risks to the polishing personnel.

[0016] like Figure 1-3As shown, a traction motor grinder includes a wheelset 10 and a traction motor 20 mounted on its input end. A commutator 30 is mounted on the rotor of the traction motor 20. A side cover 40 is provided on the outer side wall of the traction motor 20. Wheelset 10 is installed on Dongfeng locomotive. Dongfeng locomotive has a total of six traction motors 20 installed on the locomotive wheelset 10. The torque of the traction motor 20 is transmitted to the wheelset 10 to generate traction force. Commutator 30 is installed on the rotor of traction motor 20. Side cover 40 is installed on the outer wall of traction motor 20 by bolts for inspection and maintenance. A grinding assembly 50 is installed on the bottom outer wall of the commutator 30. The grinding assembly 50 includes a grinding box 51, which is disposed on the bottom outer wall of the commutator 30; a fixing plate 52, which is fixedly connected to the outer wall of the grinding box 51 and connected to the inner wall of the traction motor 20 on one side; a grinding stone 53, which is slidably connected to the upper end of the inner wall of the grinding box 51; a limiter 54, which is slidably connected to the lower end of the inner wall of the grinding box 51; an adjusting pad 55 is provided between the limiter 54 and the grinding stone 53; a brush holder 56, which is disposed on the outer wall of the grinding box 51 and connected to the bottom of the limiter 54 at one end; and a brush holder spring 57, which is disposed at one end of the brush holder 56. The grinding assembly 50 is installed on the original brush holder system of the commutator 30. The grinding box 51 is made of a 3mm thick copper plate. A grinding box 51, 110mm long and 50mm wide, is made according to the width of the commutator and the thickness of the grinding stone 53. It is welded to the original brush holder system. The grinding box 51 is installed at the bottom of the commutator 30 using a fixing plate 52 and fixing screws. The grinding stone 53 or fine sandpaper wrapped around the grinding stone 53 is placed inside the grinding box 51. The brush holder spring 57 presses the grinding stone 53 or the fine sandpaper wrapped around the grinding stone 53 onto the surface of the commutator 30. When the locomotive wheelset 10 rotates, driving the commutator 30 of the commutator 30 to rotate, the grinding stone 53 grinds the surface of the commutator 30, transforming manual grinding into automatic grinding. How to control the traction... The solution to the grinding dimension of the motor commutator 30 is to manufacture a limiter 54. Adjustment shims 55 of different sizes are made according to the grinding dimension requirements of the commutator 30 surface. These shims are placed on the limiter 54 during grinding. When grinding reaches a certain dimension, the bottom end face of the limiter 54 will be pressed down to the bottom end face of the grinding box 51 by the brush holder spring 57 through the brush holder 56, preventing further pressing. At this point, the grinding stone 53 is no longer under force and separates from the commutator 30 surface by downward gravity. This ensures both the grinding of the commutator 30 and that the grinding dimension meets the requirements. Because the grinding stone 53 is no longer under force and separates from the commutator 30 surface by downward gravity, the entire grinding assembly 50 must be installed below the commutator 30 to ensure safe grinding of the commutator 30.

[0017] The fixing plate 52 includes a plate body 521, which is fixedly connected to the outer wall of the grinding box 51; and a mounting hole 522, which is opened on the outer wall of the plate body 521. The grinding box 51 is installed on the original brush holder system through the plate body 521 and bolts.

[0018] The grinding stone 53 has a rectangular parallelepiped structure, and the width of the grinding stone 53 is the same as the width of the commutator 30.

[0019] The limiter 54 has a "T" shaped structure, and the bottom end face of the limiter 54 is wider than the bottom width of the grinding box 51 to achieve the purpose of limiting.

[0020] The brush holder 56 includes a brush holder frame 561, which is fixedly connected to the outer wall of the grinding box 51; a hinge rod 562, which is hinged to the inner wall of the brush holder frame 561, with one end connected to one end of the brush holder spring 57; and a brush holder rod 563, which is fixedly connected to one end of the hinge rod 562, with one end abutting against the bottom surface of the limiter 54. The brush holder rod 563 is hinged to the brush holder frame 561 via the hinge rod 562. One end of the hinge rod 562 is connected to the brush holder spring 57, and one end of the brush holder rod 563 is connected to the bottom end face of the limiter 54. During grinding, the brush holder spring 57 applies pressure to the hinge rod 562, which in turn applies pressure to the brush holder rod 563, which in turn applies pressure to the limiter 54, which in turn applies pressure to the grinding stone 53, causing the grinding stone 53 to adhere to the surface of the commutator 30 for automatic grinding. There are two brush holder rods 563 in total.

[0021] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A traction motor grinder, comprising a wheelset (10) and a traction motor (20) mounted at its input end, wherein a commutator (30) is mounted on the rotor of the traction motor (20); characterized in that, The traction motor (20) has a side cover (40) on its outer side wall; a grinding assembly (50) is installed on the bottom outer side wall of the commutator (30), the grinding assembly (50) including a grinding box (51), a fixing plate (52), a grinding stone (53), a limiter (54), a brush holder (56), and a brush holder spring (57), the grinding box (51) being disposed on the bottom outer side wall of the commutator (30); the fixing plate (52) being fixedly connected to the grinding box (51). The outer side wall of the grinding box (51) is connected to the inner wall of the traction motor (20) on one side of the fixing plate (52); the grinding stone (53) is slidably connected to the upper end of the inner side wall of the grinding box (51); the limiter (54) is slidably connected to the lower end of the inner side wall of the grinding box (51); the brush holder (56) is disposed on the outer side wall of the grinding box (51), and one end is connected to the bottom of the limiter (54); the brush holder spring (57) is disposed on one end of the brush holder (56).

2. The traction motor grinder according to claim 1, characterized in that, The grinding box (51) has a length of 110mm and a width of 50mm.

3. A traction motor grinder according to claim 1, characterized in that, The fixing plate (52) includes a plate body (521) and a mounting hole (522). The plate body (521) is fixedly connected to the outer side wall of the grinding box (51). The mounting hole (522) is opened on the outer side wall of the plate body (521).

4. A traction motor grinder according to claim 1, characterized in that, The grinding stone (53) has a cuboid structure.

5. A traction motor grinder according to claim 1, characterized in that, The limiter (54) has a "T" shaped structure.

6. A traction motor grinder according to claim 1, characterized in that, An adjusting pad (55) is provided between the limiter (54) and the grinding stone (53).

7. A traction motor grinder according to claim 1, characterized in that, The brush holder (56) includes a brush holder frame (561), a hinge rod (562), and a brush holder rod (563). The brush holder frame (561) is fixedly connected to the outer wall of the grinding box (51). The hinge rod (562) is hinged to the inner wall of the brush holder frame (561), and one end is connected to one end of the brush holder spring (57). The brush holder rod (563) is fixedly connected to one end of the hinge rod (562), and one end abuts against the bottom surface of the limiter (54).

8. A traction motor grinder according to claim 7, characterized in that, There are two brush grips (563).

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