CN211234188U

CN211234188U - Motor axial float volume measurement frock

Info

Publication number: CN211234188U
Application number: CN202020082542.9U
Authority: CN
Inventors: 吴咏; 赵剑; 谢晨东; 应杰; 王浩清; 沈杰; 丁超; 杨扬; 杨晖; 孟桂聪; 宋健; 宣露
Original assignee: Shanghai Locomotive Maintenance Section of China Railway Shanghai Group Co Ltd
Current assignee: Shanghai Locomotive Maintenance Section of China Railway Shanghai Group Co Ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-08-11
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a motor axial float measurement frock, which relates to the technical field of motor detection devices, wherein a shaft head connecting piece comprises a screwing screw, a force application part and a connecting part, two ends of the force application part are respectively fixedly connected with the screwing screw and the connecting part, and the screwing screw is used for being in threaded connection with a screw hole of a motor rotating shaft; two ends of the positioning plate are respectively fixedly connected with a supporting rod, the supporting rods are used for being fixedly connected with the motor fabrication hole, the positioning plate is provided with clamping grooves, two sides of the notch nut are provided with limiting grooves, the notch nut is inserted into the clamping grooves, and two side plates of the clamping grooves are respectively inserted into the two limiting grooves; the axial adjusting piece comprises a threaded rod and an adjusting part, one end of the threaded rod is fixedly connected with the adjusting part, the other end of the threaded rod is fixedly provided with a connecting joint, the connecting joint is rotatably connected with the connecting part, and the threaded rod is in threaded connection with the notch nut. The measuring process is safe and convenient, the measuring result is accurate, and the damage to the motor can be avoided.

Description

Motor axial float volume measurement frock

Technical Field

The utility model relates to a motor detection device technical field especially relates to a motor axial float volume measurement frock.

Background

The HXD3C type electric locomotive is an alternating current transmission six-axis main line passenger and freight dual-purpose electric locomotive, is a harmonious type alternating current transmission electric locomotive series, and is suitable for a passenger and freight dual-purpose locomotive model in the first time and also is the first locomotive model with the locomotive power supply capability to the train. The YJ85A1 type motor is a three-phase squirrel-cage asynchronous traction motor supplied by an inverter, is a power transmission device of an HXD3C type electric locomotive, and requires that the axial displacement of the traction motor is within a specified range in order to ensure the long-term stable operation of the electric locomotive, so that the requirement on the measurement accuracy of the axial displacement of the YJ85A1 traction motor is higher.

The measurement of the axial displacement amount needs to make a rotor of a traction motor generate displacement in the axial direction, the measurement of the axial displacement amount at the present stage generally adopts the following mode, a suspension ring tool is fastened at a shaft head, a dial indicator base is fixed at a motor transmission end, a dial indicator needle is abutted against a part connected with the rotor, an iron rod is inserted into the suspension ring, the lower part of the iron rod is clamped in a pit, 2-3 persons are generally needed to simultaneously push the iron rod, the rotor is made to move towards a non-transmission direction, the indication number of the dial indicator is read out, the iron rod is pulled simultaneously, the rotor is made to move towards the transmission direction (the push-pull sequence can be reversed), the indication number of the dial indicator is read out again, and finally the difference of two readings is calculated. The axial displacement is measured by pushing and pulling the rotor in the above way, the measurement way is relatively original, more uncontrollable factors exist, and the following defects mainly exist:

1. when the rotor is pushed and pulled by manpower, the measured value has a great relationship with the strength of an operator, once the force is removed, the rotating shaft of the traction motor generates a back-moving phenomenon, so that the measured value is unstable and cannot scientifically reflect the actual axial moving amount.

2. The process of pushing and pulling the rotor manually needs to generate a violent force, the axial stress of the rotor is not stable, and the rotor is easy to be subjected to an oblique force, so that the rotating shaft and the bearing are pulled to be damaged.

3. The manual push-pull rotor needs a plurality of people to simultaneously operate an iron rod to generate force, the operation working condition is not ideal, and potential safety hazards such as falling injury of personnel, collision with a motor and the like exist.

4. The measurement of the axial play amount can be realized only by a pit at the placing position of the traction motor, and the measurement operation can not be carried out on site at any time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor axial float volume measurement frock to solve the problem that above-mentioned prior art exists, the measurement process is safe convenient, and measuring result is accurate, and can avoid causing the damage to the motor.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a motor axial float volume measurement frock, including spindle nose connecting piece, axial adjustment piece, notch nut, locating plate and bracing piece, the spindle nose connecting piece is including twisting screw rod, application of force portion and connecting portion, application of force portion both ends respectively with twist the screw rod with connecting portion fixed connection, twist the screw rod and be used for with motor shaft screw threaded connection, apply force in application of force portion can twist the screw rod of twisting into or screw out motor shaft screw; the two ends of the positioning plate are respectively fixedly connected with one supporting rod, the supporting rods are used for being fixedly connected with the motor process hole, a clamping groove is formed in the positioning plate, limiting grooves are formed in the two sides of the notch nut, the notch nut is inserted into the clamping groove, two side plates of the clamping groove are respectively inserted into the two limiting grooves, and the clamping groove can limit the notch nut to move axially and can limit the notch nut to rotate around an axis; the axial adjusting piece comprises a threaded rod and an adjusting portion, one end of the threaded rod is fixedly connected with the adjusting portion, the other end of the threaded rod is fixedly provided with a connecting joint, the connecting joint is rotatably connected with the connecting portion, the threaded rod is in threaded connection with the notch nut, the adjusting portion is used for rotatably adjusting the axial adjusting piece, the axial adjusting piece can enable the axial adjusting piece to axially move in the notch nut through rotary adjustment, and the axial adjusting piece can drive the shaft head connecting piece to axially move so as to drive the motor rotating shaft to axially move.

Preferably, the locating plate both ends respectively are equipped with a through-hole, the fixed positioning screw that is equipped with of bracing piece one end, positioning screw passes the through-hole, threaded connection has two set nut and two on the positioning screw set nut is located respectively the locating plate both sides, two set nut will the locating plate presss from both sides the fastening in on the positioning screw, the bracing piece other end is fixed and is equipped with a connecting screw, connecting screw is used for with motor fabrication hole threaded connection.

Preferably, the adjusting part is a regular hexagonal prism, and the adjusting part is coincided with the central axis of the threaded rod.

Preferably, the force application part is a regular hexagonal prism, and the force application part is overlapped with the central axis of the screwed screw.

Preferably, the thread of the notch nut is a fine thread.

Preferably, the connecting portion are cylinders, be equipped with T shape draw-in groove on the free end face of connecting portion, attach fitting is T shape joint, T shape joint includes big cylinder and small circle cylinder, big cylinder with small circle cylinder coaxial line fixed connection, small circle cylinder with threaded rod coaxial line fixed connection, T shape joint rotates to be connected in the T shape draw-in groove.

Preferably, the connecting portion overlaps with a central axis of the urging portion.

Preferably, the shaft head connecting piece and the axial adjusting piece are made of carbon steel.

The utility model discloses for prior art gain following technological effect:

the utility model provides a motor axial float measuring tool, which can axially move an axial adjusting piece in a groove nut by rotating and adjusting the axial adjusting piece, the axial movement of the axial adjusting piece can drive a shaft head connecting piece to axially move and further drive a motor rotating shaft to axially move, thereby driving the motor rotor to generate displacement in the axial direction, measuring the axial displacement of the motor through the dial indicator, because of adopting the threaded connection mode, the axial force of the rotor can cause the threads to be occluded, the phenomenon of back flow is avoided, the measuring process is safer and more convenient, the measuring result is more accurate, the instability of the measuring value caused by the unstable force application when the rotor is pushed and pulled by manpower is avoided, and the hidden danger that the rotating shaft and the bearing are pulled due to violent force can be eliminated, the operation working condition is ideal, and the safety problems that the operator falls, collides with the motor and the like are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a connection structure of a tool for measuring axial play of a motor according to the present invention;

FIG. 2 is a schematic structural diagram of a spindle head connector in the axial play amount measuring tool of the motor in FIG. 1;

FIG. 3 is a schematic structural diagram of an axial adjusting member in the axial play amount measuring tool of the motor in FIG. 1;

FIG. 4 is a schematic structural diagram of a notch nut in the axial play amount measuring tool of the motor in FIG. 1;

FIG. 5 is a cross-sectional view A-A of the slotted nut of FIG. 4;

FIG. 6 is a schematic structural diagram of a positioning plate in the axial play amount measuring tool of the motor in FIG. 1;

fig. 7 is a schematic structural diagram of a support rod in the axial play amount measuring tool for the motor in fig. 1;

in the figure: the device comprises a shaft head connecting piece 1, an axial adjusting piece 2, a notch nut 3, a positioning plate 4, a supporting rod 5, a screwed screw 6, a force application part 7, a connecting part 8, a motor rotating shaft 9, a clamping groove 10, a limiting groove 11, a threaded rod 12, an adjusting part 13, a connecting joint 14, a through hole 15, a positioning screw 16, a positioning nut 17, a connecting screw 18, a large cylinder 19, a small cylinder 20 and a T-shaped clamping groove 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model aims at providing a motor axial float volume measurement frock to solve the problem that prior art exists, the measurement process is safe convenient, and measuring result is accurate, and can avoid causing the damage to the motor.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1 to 7, the embodiment provides a motor axial play amount measuring tool, which includes a spindle head connector 1, an axial adjuster 2, a notch nut 3, a positioning plate 4 and a support rod 5, wherein the spindle head connector 1 includes a screw-in screw 6, a force application part 7 and a connection part 8, two ends of the force application part 7 are respectively fixedly connected with the screw-in screw 6 and the connection part 8, the screw-in screw 6 is used for being in threaded connection with a screw hole of a motor rotating shaft 9, and the force application part 7 can screw the screw-in screw 6 into or out of the screw hole of the motor rotating shaft 9; two ends of a positioning plate 4 are fixedly connected with a support rod 5 respectively, the support rod 5 is used for being fixedly connected with a motor fabrication hole, a clamping groove 10 is arranged on the positioning plate 4, limiting grooves 11 are arranged on two sides of a notch nut 3, the notch nut 3 is inserted into the clamping groove 10, two side plates of the clamping groove 10 are inserted into the two limiting grooves 11 respectively, and the clamping groove 10 can limit the notch nut 3 to move axially and limit the notch nut 3 to rotate around an axis; axial adjusting part 2 includes threaded rod 12 and regulating

part

13, 12 one ends of threaded rod and regulating part 13 fixed connection, 12 other ends of threaded rod are fixed and are equipped with attach fitting 14, attach fitting 14 rotates with connecting portion 8 and is connected, threaded

rod

12 and 3 threaded connection of notch nut, regulating part 13 is used for rotatory regulation axial adjusting part 2, can make axial adjusting part 2 axial displacement in notch nut 3 through rotatory regulation axial adjusting part 2, 2 axial displacements of axial adjusting part can drive 1 axial displacement of spindle nose connecting piece and then drive 9 axial displacements of motor shaft.

When the dial indicator is used, a dial indicator base is fixed at a motor transmission end, a dial indicator needle abuts against a component connected with a rotor, the spindle head connecting piece 1 is screwed into a screw hole of a motor rotating shaft 9 by screwing the force application part 7, the support rod 5 is fixedly connected with a motor fabrication hole, the connecting joint 14 is rotatably connected with the connecting part 8, the connecting part 8 can be driven to axially move by the axial movement of the connecting joint 14, the axial adjusting piece 2 is adjusted by the counterclockwise rotation of the adjusting part 13, so that the threaded rod 12 generates outward axial displacement in the notch nut 3, the spindle head connecting piece 1 is driven to generate axial displacement by the driving of the connecting joint 14, the motor rotating shaft 9 is driven to axially move, the motor rotor is driven to generate outward axial displacement, and when the motor rotor generates outward axial maximum displacement, the dial indicator is read; rotating and adjusting the axial adjusting piece 2 in the anticlockwise direction to enable the motor rotor to generate inward displacement in the axial direction, reading the percentage representation number again when the motor rotor generates inward maximum axial displacement, and calculating the difference of the two percentage representation numbers to obtain the axial movement amount of the motor; due to the fact that the threaded connection mode is adopted, the axial force of the rotor can enable the threads to be meshed, the phenomenon of channeling is avoided, the measuring process is safe and convenient, the measuring result is accurate, force application is unstable when the rotor is pushed and pulled manually, measuring values are unstable, the hidden danger that the rotating shaft and the bearing are pulled due to violent force can be eliminated, the operation working condition is ideal, and the safety problems that operating personnel fall and collide with the motor and the like are avoided.

As shown in fig. 1 and 6 to 7, two ends of the positioning plate 4 are respectively provided with a through hole 15, one end of the support rod 5 is fixedly provided with a positioning screw 16, the positioning screw 16 penetrates through the through hole 15, the positioning screw 16 is connected with two positioning nuts 17 in a threaded manner, the two positioning nuts 17 are respectively located on two sides of the positioning plate 4, the positioning plate 4 is clamped and fixed on the positioning screw 16 by the two positioning nuts 17, the other end of the support rod 5 is fixedly provided with a connecting screw 18, the connecting screw 18 is used for being in threaded connection with a motor process hole, wherein the rod body of the support rod 5 can be set into a regular hexagonal prism, the connecting screw 18 is conveniently screwed into the motor process hole by using a wrench, the position of the positioning plate 4 can be conveniently and rapidly adjusted by rotating the two.

As shown in fig. 1 and 3, the adjusting portion 13 is a regular hexagonal prism, the central axis of the adjusting portion 13 coincides with the central axis of the threaded rod 12, the adjusting portion 13 is set to be the regular hexagonal prism, the adjusting portion 13 can be screwed by using a wrench, and the adjustment is convenient and labor-saving.

As shown in fig. 1 to 2, the force application part 7 is a regular hexagonal prism, the force application part 7 is overlapped with the central axis of the screwing screw 6, the force application part 7 is set to be a regular hexagonal prism, the force application part 7 can be screwed by using a wrench, and therefore the spindle head connecting piece 1 can be conveniently screwed in or out of the screw hole of the motor spindle 9.

The threads of the notch nut 3 are fine threads, and compared with coarse threads, the fine threads can accurately control the axial displacement generated by the axial adjusting piece 2 rotating in the notch nut 3.

As shown in fig. 1-3, the connecting portion 8 is a cylinder, a T-shaped clamping groove 21 is formed in the free end face of the connecting portion 8, the connecting joint 14 is a T-shaped joint, the T-shaped joint comprises a large cylinder 19 and a small cylinder 20, the large cylinder 19 and the small cylinder 20 are fixedly connected with each other in a coaxial manner, the small cylinder 20 is fixedly connected with the threaded rod 12 in a coaxial manner, the T-shaped joint is rotatably connected in the T-shaped clamping groove 21, the structure is simple to set, and the shaft head connecting member 1 and the axial adjusting member 2 can be conveniently disassembled and assembled.

As shown in fig. 1-2, the central axes of the connecting portion 8 and the force application portion 7 are overlapped, so that the stress of the connecting portion 8 and the force application portion 7 is more uniform.

The shaft head connecting piece 1 and the axial adjusting piece 2 are made of carbon steel, so that the processing is convenient, and the processing cost is low.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a motor axial float volume measurement frock which characterized in that: the electric spindle comprises a spindle head connecting piece, an axial adjusting piece, a notch nut, a positioning plate and a supporting rod, wherein the spindle head connecting piece comprises a screwing-in screw rod, a force application part and a connecting part, two ends of the force application part are respectively and fixedly connected with the screwing-in screw rod and the connecting part, the screwing-in screw rod is used for being in threaded connection with a screw hole of a motor rotating shaft, and the screwing-in screw rod can be screwed in or screwed out of the screw hole of the motor rotating shaft by applying force to; the two ends of the positioning plate are respectively fixedly connected with one supporting rod, the supporting rods are used for being fixedly connected with the motor process hole, a clamping groove is formed in the positioning plate, limiting grooves are formed in the two sides of the notch nut, the notch nut is inserted into the clamping groove, two side plates of the clamping groove are respectively inserted into the two limiting grooves, and the clamping groove can limit the notch nut to move axially and can limit the notch nut to rotate around an axis; the axial adjusting piece comprises a threaded rod and an adjusting portion, one end of the threaded rod is fixedly connected with the adjusting portion, the other end of the threaded rod is fixedly provided with a connecting joint, the connecting joint is rotatably connected with the connecting portion, the threaded rod is in threaded connection with the notch nut, the adjusting portion is used for rotatably adjusting the axial adjusting piece, the axial adjusting piece can enable the axial adjusting piece to axially move in the notch nut through rotary adjustment, and the axial adjusting piece can drive the axial movement of the shaft head connecting piece to further drive the axial movement of the motor rotating shaft.

2. The axial play amount measuring tool for the motor according to claim 1, wherein: the locating plate both ends respectively are equipped with a through-hole, the fixed positioning screw that is equipped with of bracing piece one end, positioning screw passes the through-hole, threaded connection has two set nut and two on the positioning screw set nut is located respectively the locating plate both sides, two set nut will the locating plate clamp is fixed in on the positioning screw, the bracing piece other end is fixed and is equipped with a connecting screw, connecting screw is used for with motor fabrication hole threaded connection.

3. The axial play amount measuring tool for the motor according to claim 1, wherein: the adjusting part is a regular hexagonal prism, and the adjusting part is coincided with the central axis of the threaded rod.

4. The axial play amount measuring tool for the motor according to claim 1, wherein: the force application part is a regular hexagonal prism and is superposed with the central axis of the screwed screw.

5. The axial play amount measuring tool for the motor according to claim 1, wherein: the threads of the notch nut are fine threads.

6. The axial play amount measuring tool for the motor according to claim 4, wherein: the connecting portion are the cylinder, be equipped with T shape draw-in groove on the free end face of connecting portion, the attach fitting is T shape joint, T shape joint includes big cylinder and small circle cylinder, big cylinder with small circle cylinder coaxial line fixed connection, small circle cylinder with threaded rod coaxial line fixed connection, T shape joint rotates to be connected in the T shape draw-in groove.

7. The axial play amount measuring tool for the motor according to claim 6, wherein: the connecting part is superposed with the central axis of the force application part.

8. The axial play amount measuring tool for the motor according to claim 1, wherein: the spindle nose connecting piece with the axial adjustment piece is carbon steel material.