CN205309728U - Traction motor bearing remove device - Google Patents

Abstract

The utility model provides a device for taking out a bearing of a traction motor, which comprises a toothed disc (1), and a plurality of convex teeth (11) are arranged on the circumferential direction of the ring toothed disc (1), and between two adjacent convex teeth (11) Groove (12) is set between. When taking out the bearings of the traction motor, first align the groove on the toothed plate with the bearing roller, and put the toothed plate into the bottom of the bearing chamber on the bearing end cover; then, rotate the toothed plate at a certain angle so that the toothed plate The teeth on the ring catch the bearing rollers; finally, pressure is applied to the chainring to disengage the bearing outer ring from the bearing chamber on the bearing end cover. The utility model can effectively utilize the narrow space between the bearing and the bearing end cover, and is convenient for installation, and the bearing can be completely taken out from the bearing chamber on the bearing end cover, and the whole bearing removal process is safe and reliable , which greatly reduces the difficulty of bearing removal and the scrapping rate of bearings, and improves the efficiency of bearing removal.

Description

A traction motor bearing removal device

technical field

The utility model relates to the technical field of disassembly and assembly of traction motor bearings, in particular to a device for taking out traction motor bearings.

Background technique

The bearing outer ring, bearing rollers, and bearing cage of the existing traction motor bearing are connected into an integrated structure, and the bearing outer ring and the bearing chamber on the bearing end cover are fixedly connected by interference fit. Since the distance between the circular spigot surface of the bearing end cover and the outer surface of the bearing roller is very small, when the bearing outer ring is taken out from the bearing end cover by using an ordinary bearing removal device, such as a copper hammer or a copper rod, , there are the following problems:

One is that the operation of the operator is difficult, and the work efficiency of bearing removal is low, resulting in high cost of bearing removal.

Second, the method of knocking the bearing with a copper hammer or a copper rod is clumsy. Not only is it easy to damage the bearing during the removal operation, but this knocking method also makes the work efficiency of the bearing lower and it is difficult to remove the bearing. The outer ring is completely removed from the bearing cover.

Third, if the fit interference between the bearing chamber on the bearing end cover and the bearing outer ring is large, a large knocking force is required to remove the bearing outer ring from the bearing chamber on the bearing end cover. During this removal process, the bearing is easily damaged, and even the bearing is scrapped, thereby increasing the application cost of the bearing product.

Utility model content

The technical problem to be solved by the utility model is: aiming at the problems existing in the prior art, a device for taking out the bearing of the traction motor is provided, which is not only safe and reliable in the taking out process of the bearing, but also has high work efficiency in taking out the bearing.

The technical problem to be solved by the utility model is realized by the following technical solutions: a traction motor bearing take-out device, including a gear plate, a number of protruding teeth are arranged in the circumferential direction of the ring gear disc, and between two adjacent protruding teeth Set the groove.

Preferably, spacers are also included.

Preferably, the pad is a hollow annular cylinder.

Preferably, a bearing anti-collision device is also included.

Preferably, the bearing anti-collision device is cotton cloth or sponge.

Preferably, the toothed disc has a T-shaped structure, and the axial thickness of the protruding teeth on the toothed disc is smaller than the axial thickness of the main body of the toothed disc.

Preferably, through holes are provided on the toothed disc.

Preferably, the ends of the protruding teeth are arc-shaped transition parts.

Preferably, there are several grooves, all of which are arc-shaped transition grooves.

Preferably, the centers of the grooves are located on the same circumference.

Compared with the prior art, the beneficial effect of the utility model is that: since the teeth and grooves are set on the tooth plate, the narrow space between the bearing and the bearing end cover can be effectively used, and the installation is convenient, as long as the tooth plate is installed in place Finally, the outer ring of the bearing can be easily and completely taken out from the bearing chamber on the bearing end cover by applying pressure to the toothed plate. The whole bearing taking out process is safe and reliable, which greatly reduces the difficulty of taking out the bearing and the scrapping rate of the bearing. The efficiency of bearing removal is improved, and the cost of bearings is saved.

Description of drawings

Fig. 1 is a front view of a traction motor bearing extracting device of the present invention.

Fig. 2 is a side view of a traction motor bearing extracting device of the present invention.

Fig. 3 is a flow chart of the method for taking out the bearing of the traction motor (the sprocket is put into the bottom of the bearing chamber of the end cover).

Fig. 4 is a flow chart of the method for taking out the bearing of the traction motor (the toothed plate rotates until the convex teeth hang on the bearing roller).

Fig. 5 is a flow chart of the method for taking out the bearing of the traction motor (applying pressure to the toothed plate to make the outer ring of the bearing separate from the bearing chamber of the end cover).

Marks in the figure: 1- toothed disc, 2- bearing outer ring, 3- bearing roller, 4- bearing cage, 5- bearing end cover, 6- spacer, 7- bearing anti-collision device, 8- workbench , 11-convex teeth, 12-grooves, 13-through holes.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1 and Figure 2, a traction motor bearing removal device mainly includes a toothed disc 1, and several convex teeth 11 are arranged on the circumferential direction of the ring toothed disc 1, and the convex teeth 11 and the toothed disc 1 are integrated. It is processed and shaped to improve the connection strength of the protruding teeth 11 , and a groove 12 is provided between two adjacent protruding teeth 11 .

As shown in Figure 3, Figure 4, and Figure 5, the bearing outer ring 2, bearing roller 3, and bearing cage 4 of the traction motor bearing are connected into an integrated structure, wherein the bearing outer ring 2 and the bearing end cover 5 The bearing chambers are fixedly connected by interference fit. In order to take out the bearing from the bearing chamber on the bearing end cover 5, the above-mentioned traction motor bearing removal device can be used, and the bearing outer ring 2 can be completely taken out from the bearing chamber on the bearing end cover 5 according to the following steps. in particular:

First, as shown in FIG. 3 , align the groove 12 on the toothed plate 1 with the bearing roller 3 , and put the toothed plate 1 into the bottom of the bearing chamber on the bearing end cover 5 . In order to facilitate the installation of the gear plate 1 and ensure reliable contact between the grooves 12 and the bearing rollers 3, several grooves 12 can be designed as arc-shaped transition grooves, and the centers of the grooves 12 are all located on the same circumference. As shown in Figure 1.

Then, as shown in FIG. 4 , the gear plate 1 is rotated at a certain angle relative to the bearing outer ring 2 , so that the protruding teeth 11 on the gear plate 1 catch the bearing roller 3 . A circular through-hole 13 is opened on the toothed disc 1 , through which the through-hole 13 can not only reduce the weight of the toothed disc 1 , but also facilitate the handling, rotation and other installation operations of the toothed disc 1 . The end of the protruding tooth 11 is designed as an arc-shaped transition portion, so that the contact between the protruding tooth 11 and the outer surface of the bearing roller 3 is an arc surface contact, thereby avoiding the tooth plate 1 from being damaged during the installation operation. The convex teeth 11 on the top damage the bearing roller 3, which is beneficial to reduce the scrap rate of taking out the bearing.

Finally, as shown in Figure 5, after the toothed plate 1 is installed in place, place the pad 6 on the workbench 8 of the hydraulic press or hydraulic pump, then hoist the bearing end cover 5 on the pad 6, and then start the hydraulic press or hydraulic pump To exert downward pressure on the gear plate 1, so that the bearing outer ring 2 is separated from the bearing chamber on the bearing end cover 5, and falls onto the workbench 8, and the bearing removal operation is completed. The spacer 6 can be placed in two pieces, and they are respectively located on the opposite sides of the bearing chamber on the bearing end cover 5; The bearing chamber is opposite. The vertical falling space of the bearing can be increased by arranging the spacer 6 to ensure that the bearing can be completely and completely separated from the bearing chamber on the bearing end cover 5 .

In the process of applying downward pressure on the toothed plate 1, in order to prevent the displacement between the toothed plate 1 and the bearing roller 3, the toothed plate 1 can be designed as a T-shaped structure, and the convex teeth 11 on the toothed plate 1 The axial thickness is smaller than the axial thickness of the main body of the toothed disc 1, as shown in Figure 2, so that the protrusion of the toothed disc 1 can extend into the cavity surrounded by the bearing roller 3, and at the same time, the toothed disc 1 The convex teeth 11 on the top can better catch the bearing roller 3, thereby ensuring the safety and reliability of the bearing removal operation. In order to prevent the bearing after the bearing chamber on the bearing end cover 5 from falling onto the workbench 8 to cause damage to the bearing, as shown in Figure 5, a bearing anti-collision device can be placed on the workbench 8 of the hydraulic press or hydraulic pump 7. The bearing anti-collision device 7 can be made of cotton cloth or a sponge, and the bearing anti-collision device 7 is located directly below the bearing outer ring 2, and its occupied area is greater than or equal to the bearing outer ring 2 Occupied area, to ensure that the bearing after breaking away from the bearing chamber on the bearing end cover 5 can fall on the bearing anti-collision device 7 as a whole, thereby avoiding the damage after the bearing is taken out.

In order to make each bearing roller 3 on the bearing hook with the convex teeth 11 on the toothed disc 1, ensure that the bearing is evenly stressed when it is taken out, and protect the bearing to the greatest extent, the specific structure of the toothed disc 1 can be The design is as follows: according to the specific number of bearing rollers 3, the number of convex teeth 11 on the toothed disc 1 is determined; the radius Ra of the groove 12 on the toothed disc 1 is determined according to the radius of the bearing roller 3; The diameter of the inner circle of the frame 4 determines the tooth top radius Rb of the toothed disc 1, the root diameter Φc of the toothed disc 1 is determined according to the outer diameter of the inner ring of the bearing, and the groove on the toothed disc 1 is determined according to the distribution of the bearing rollers 3 12, the diameter Φd of the circle where the center of the circle is located, and the thickness f of the convex teeth 11 on the gear plate 1 is determined according to the distance between the top surface of the bearing roller 3 and the bottom surface of the bearing chamber on the bearing end cover 5, as shown in Figure 1, Shown in Figure 2 and Figure 5. The toothed disc 1 can be made of 45# steel material, which not only has low cost, but also has reliable mechanical strength.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. It should be pointed out that any modification, equivalent replacement and improvement made within the spirit and principles of the utility model, etc., All should be included within the protection scope of the present utility model.

Claims (10)

1. A traction motor bearing taking-out device is characterized in that: it comprises a toothed disc (1), several convex teeth (11) are set on the circumferential direction of the ring toothed disc (1), and two adjacent convex teeth (11) ) Groove (12) is set between. 2. A traction motor bearing extracting device according to claim 1, characterized in that it further comprises a spacer (6). 3. A traction motor bearing removal device according to claim 2, characterized in that: the spacer (6) is a hollow annular cylinder. 4. A traction motor bearing extracting device according to claim 1, characterized in that it further comprises a bearing anti-collision device (7). 5. A traction motor bearing removal device according to claim 4, characterized in that: the bearing anti-collision device (7) is cotton cloth or sponge. 6. A traction motor bearing removal device according to any one of claims 1-5, characterized in that: the toothed disc (1) is a T-shaped structure, and the convex teeth ( 11) The axial thickness is smaller than the axial thickness of the main body of the toothed disc (1). 7. A traction motor bearing extracting device according to claim 6, characterized in that: said chainring (1) is provided with a through hole (13). 8. A traction motor bearing extraction device according to claim 6, characterized in that: the end of the protruding tooth (11) is a circular arc-shaped transition portion. 9. A traction motor bearing removal device according to claim 6, characterized in that there are several grooves (12), all of which are arc-shaped transition grooves. 10. A traction motor bearing extracting device according to claim 9, characterized in that: the centers of the grooves (12) are located on the same circumference.