Locomotive direct current motor coupler drawing device

Abstract

The utility model provides a locomotive direct current motor coupler drawing device. The locomotive direct current motor coupler drawing device comprises a tail supporting plate; the jack is mounted in the middle of the tail supporting plate; the pulling arms are symmetrically arranged on the two sides of the jack respectively, and each pulling arm comprises a main arm and an auxiliary arm hinged to the free end of the main arm; the drawing action plate is parallel to the tail supporting plate, a U-shaped groove used for being embedded and matched with a motor shaft is formed in the drawing action plate, the action axis of the jack is parallel to the central axis of the arc portion of the U-shaped groove, and the end, away from the tail supporting plate, of the pull arm is fixedly connected with the drawing action plate. The auxiliary arm is arranged on the main arm in a hinged mode, the U-shaped groove in the drawing action plate can be clamped into the portion, between the coupler and the motor body, of the motor shaft, then the main arm is turned over, the main arm and the auxiliary arm are in an in-line shape, drawing and dismounting of the coupler are conducted, and especially when the distance between the motor shaft and an equipment table top or the ground is small, the auxiliary arm can be used for pulling and dismounting of the coupler. And the disassembly and assembly operation of the drawing action plate is not needed, the operation convenience is higher, and the operation is more efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coupling maintenance equipment, in particular to a locomotive DC motor coupling pulling device. BACKGROUND

[0002] The shaft of the locomotive DC motor and the coupling are selected to be over-matched. In the matching of the coupling hole and the motor shaft, the tolerance bands of the hole and the shaft overlap each other. If one pair of hole and shaft is matched, there may be a gap or an over-matched matching. If the coupling is not properly disassembled during the maintenance of the motor, the selected tool or tooling is not suitable, the motor shaft neck is easily damaged after disassembly.

[0003] Moreover, because the shaft of the locomotive DC motor and the coupling are selected to be over-matched and are relatively tight, the ordinary three-jaw puller is not powerful enough and the shaft center is easily damaged. After each maintenance and replacement of new parts, it is difficult to pull out the problem, which seriously affects the maintenance progress and the service life of the motor. In view of the above problems, it is urgent to research a coupling pulling device to improve the safety and reliability and efficiency of the maintenance construction process. CONTENT OF THE INVENTION

[0004] In order to improve the problem of low reliability of the existing coupling pulling device and easy damage to the motor shaft neck, the present application provides a locomotive DC motor coupling pulling device.

[0005] The locomotive DC motor coupling pulling device provided by the present application adopts the following technical scheme:

[0006] A locomotive DC motor coupling pulling device comprises:

[0007] A tail support plate is used as a bearing;

[0008] A jack is installed at the central part of the tail support plate;

[0009] A pull arm is provided with at least two and is symmetrically arranged on both sides of the jack. The pull arm comprises a main arm fixed to the tail support plate and a secondary arm hinged to the free end of the main arm; and

[0010] A pulling action plate is arranged parallel to the tail support plate and has a U-shaped groove for fitting with the motor shaft. The axis of the jack is parallel to the central axis of the arc part of the U-shaped groove. One end of the pull arm away from the tail support plate is fixed to the pulling action plate.

[0011] Furthermore, the main arm is in a hollow cylindrical shape, and a rotating shaft is fixed to one end of the secondary arm close to the main arm and is arranged to rotate in the main arm.

[0012] Further, the main arm end is fixed with a limiting part in U-shaped cross section, the auxiliary arm is arranged in the opening of the limiting part through the rotating shaft, and the opening direction of the limiting part is the same as the opening direction of the U-shaped slot.

[0013] Further, the end of the auxiliary arm away from the main arm is fixed on the pulling plate.

[0014] Further, the thickness of the tail support plate and the pulling plate is not less than 25 mm, and the thickness of the pulling plate is greater than the thickness of the tail support plate.

[0015] Further, the tail support plate is provided with chamfers or round corners at four corners.

[0016] Further, the piston rod end of the jack is fixed with a buffer pad.

[0017] Further, the side of the buffer pad away from the jack is provided with an anti-skid structure.

[0018] Further, the tail support plate is provided with a plurality of support feet arranged orthogonally to the length direction of the pulling arm.

[0019] Further, the side of the tail support plate away from the pulling arm is fixed with a plurality of inner screw cylinders, and the support feet are fixed with adjusting screws threadedly connected with the inner screw cylinders.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. By hingedly arranging the auxiliary arm on the main arm, the U-shaped slot on the pulling plate can be clamped on the motor shaft between the shaft coupling and the motor body, and then the main arm is flipped down, so that the main arm and the auxiliary arm are in-line and pull the shaft coupling for disassembly. Especially when the distance between the motor shaft and the equipment table or the ground is small, the pulling plate does not need to be disassembled, the operation is more convenient, and the work is more efficient.

[0022] 2. By arranging the support feet, adjusting screws and inner screw cylinders on the tail support plate, the distance between the support feet and the tail support plate can be adjusted to ensure that the action axis of the jack is parallel to the motor shaft axis, which is suitable for disassembly of the shaft coupling of the motor under different installation conditions. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of this application.

[0026] Figure label:

[0027] 1. Tail support plate;

[0028] 2. Jack;

[0029] 3. Pulling arm; 31. Main boom; 311. Limiting part; 32. Auxiliary boom; 33. Rotary shaft;

[0030] 4. Pulling action plate; 41. U-shaped groove;

[0031] 5. Cushioning pad;

[0032] 61. Support foot; 62. Inner screw; 63. Adjusting screw. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] Reference Figure 1 and Figure 2 This application discloses a locomotive DC motor coupling pull-out device, which includes:

[0035] The tail support plate 1 serves as a load-bearing component and is vertically positioned.

[0036] Jack 2 is installed in the center of the tail support plate 1;

[0037] At least two pull arms 3 are provided and are symmetrically arranged on both sides of the jack 2. In this embodiment, there are two pull arms 3.

[0038] The pulling action plate 4 is set parallel to the tail support plate 1 and has a U-shaped groove 41 for fitting with the motor shaft. The working axis of the jack 2 is parallel to the central axis of the arc of the U-shaped groove 41. The end of the pull arm 3 away from the tail support plate 1 is fixedly connected to the pulling action plate 4.

[0039] Furthermore, referring to Figure 1 and Figure 2The pull arm 3 includes a main arm 31 fixed to the tail support plate 1 and a secondary arm 32 hinged to the free end of the main arm 31. The main arm 31 is hollow cylindrical. The end of the secondary arm 32 near the main arm 31 is fixed with a rotating shaft 33 rotatably mounted on the main arm 31. The end of the main arm 31 is fixed with a U-shaped limiting part 311. The secondary arm 32 is flipped and mounted in the opening of the limiting part 311 through the rotating shaft 33. The opening direction of the limiting part 311 is the same as the opening direction of the U-shaped groove 41.

[0040] Therefore, when it is necessary to remove the motor shaft coupling, first fold the auxiliary arm 32 so that the auxiliary arm 32 and the main arm 31 form a certain angle. Then, insert the U-shaped groove 41 on the pulling action plate 4 into the motor shaft between the coupling and the motor body. Then, flip the main arm 31 downward so that the main arm 31 and the auxiliary arm 32 are in a straight line. Then, start the jack 2 to pull and remove the coupling. In this process, since the smaller pulling action plate 4 is first inserted into the motor shaft, and then the tail support plate 1 is flipped downward, the pulling device of this application can be conveniently installed even in a small equipment space. For example, when the distance between the motor shaft and the equipment table or the ground is small, the larger tail support plate 1 will cause interference, making it impossible for the U-shaped groove 41 on the pulling action plate 4 to be smoothly inserted into the motor shaft. It is necessary to first remove the pulling action plate 4 for adaptation and installation with the motor shaft, and then install the pulling action plate 4 on the pull arm 3. The pulling device of this application does not require the disassembly and assembly of the pulling action plate 4, making it more convenient to operate and more efficient during operation.

[0041] Among them, reference Figure 1 and Figure 2 The end of the auxiliary boom 32 furthest from the main boom 31 is bolted to the pulling action plate 4, allowing for replacement of the corresponding pulling action plate 4 when adapting to different sized motor shafts. The tail support plate 1 and the pulling action plate 4 are both at least 25mm thick, with the pulling action plate 4 being thicker than the tail support plate 1 to provide a stable pulling effect. The tail support plate 1 has chamfered or rounded corners at all four corners to prevent accidental scratches during operation.

[0042] Furthermore, to reduce damage to the motor shaft end during pull-out of the coupling and to avoid pull-out slippage, in one feasible embodiment, refer to Figure 2 The piston rod end of the jack 2 is fixed with a buffer pad 5, and the side of the buffer pad 5 away from the jack 2 is provided with an anti-slip structure; the buffer pad 5 can be made of hard plastic or hard rubber, and the anti-slip structure can be a protective protrusion or an anti-slip groove.

[0043] In addition, regarding the high-position motor shaft, to prevent the tail support plate 1 from becoming unbalanced when suspended, which could cause an imbalance in the force applied by the jack 2, in another feasible embodiment, refer to... Figure 2A plurality of support feet 61 are arranged on the tail support plate 1 and are perpendicular to the length direction of the pull arm 3, a plurality of inner screw cylinders 62 are fixed to the side of the tail support plate 1 away from the pull arm 3, and an adjusting screw 63 is fixed to the support feet 61 and is screwed with the inner screw cylinder 62.

[0044] Therefore, the distance between the support feet 61 and the tail support plate 1 can be adjusted by rotating the adjusting screw 63, so that the action axis of the jack 2 can be kept parallel to the motor shaft axis, and the coupling of the motor under different installation conditions can be removed.

[0045] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A locomotive DC motor coupling puller apparatus, comprising: The utility model relates to a kind of electric motor shaft pulling device, including: Tail support plate is used as bearing; Jack is installed in the central part of the tail support plate; Pull arm is provided with at least two and is arranged symmetrically on both sides of the jack, the pull arm includes main arm fixed to tail support plate and auxiliary arm hinged in the free end of the main arm;And Pulling action plate is arranged in parallel to tail support plate, with U-shaped slot for embedding and adapting with motor shaft on it, jack action axis is parallel to the central axis of the arc portion of the U-shaped slot, the end of the pull arm away from tail support plate is fixed to the pulling action plate.

2. The locomotive DC motor coupling draw gear as defined in claim 1 wherein, The main arm is hollow cylindrical, and the auxiliary arm is fixed with a rotating shaft arranged on the main arm at one end close to the main arm.

3. The locomotive DC motor coupling draw gear as defined in claim 2 wherein, The end of the main arm is fixed with a limiting part with U-shaped cross section, the auxiliary arm is arranged in the opening of the limiting part by the rotating shaft, and the opening direction of the limiting part is the same as the opening direction of the U-shaped slot.

4. The locomotive DC motor coupling draw gear as defined in claim 1 wherein, The end of the auxiliary arm away from the main arm is bolted and fixed to the pulling action plate.

5. The locomotive DC motor coupling draw gear as defined in claim 1 wherein, The thickness of the tail support plate and the pulling action plate is not less than 25mm, and the thickness of the pulling action plate is greater than the thickness of the tail support plate.

6. The locomotive DC motor coupling draw gear as defined in claim 1 wherein, The tail support plate is provided with chamfer or round corner at four corners.

7. The locomotive DC motor coupling puller apparatus of claim 1, wherein, The end of the piston rod of the jack is fixed with a buffer pad.

8. The locomotive DC motor coupling draw gear as defined in claim 7 wherein, The side of the buffer pad away from the jack is provided with anti-skid structure.

9. The locomotive DC motor coupling draw gear as defined in claim 1 wherein, The tail support plate is provided with a plurality of support feet arranged orthogonally to the length direction of the pull arm.

10. The locomotive DC motor coupling draw gear as defined in claim 9 wherein, The side of the tail support plate away from the pull arm is fixed with a plurality of internal screw cylinders, and the support feet are fixed with adjusting screws threadedly connected with the internal screw cylinders.

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