CN219552345U - A rack for automatic detection of in-service locomotive wheel - Google Patents

Abstract

The utility model discloses a rack for automatically detecting wheels of in-service locomotives, which comprises a mounting platform and annular supporting frames, wherein the annular supporting frames are arranged in pairs and sleeved on wheel intermediate shafts, the annular supporting frames are coaxially arranged, the axes of the annular supporting frames extend in the horizontal direction, the annular supporting frames comprise bottom frames and top frames which are spliced into an annular structure, the bottom frames are fixed on the mounting platform and are provided with a plurality of bottom supporting rollers which support the wheel intermediate shafts to hang above the bottom frames, the bottom supporting rollers protrude out of the top edges of the bottom frames, the rotation axes of the bottom supporting rollers extend in the same direction with the wheel intermediate shafts, the top frames are detachably connected above the bottom frames, and an interval for the wheel intermediate shafts to lift up is arranged between the top frames and the wheel intermediate shafts, so that the locomotive wheels are prevented from being directly mounted on a flaw detection device in the prior art, the position state of the locomotive wheels during in-situ loading can be simulated, and the accuracy of flaw detection results is ensured.

Description

A rack for automatic detection of in-service locomotive wheel

Technical Field

The utility model relates to the technical field of locomotive wheel detection equipment, in particular to a rack for automatically detecting in-service locomotive wheels.

Background

In terms of guaranteeing the quality safety of wheels of a railway locomotive, two main methods exist at present: firstly, the wheel production and manufacturing technology is improved, the quality of the wheel is improved from the source, secondly, the wheel detection technology is developed, nondestructive detection is carried out on the newly manufactured and in-service locomotive wheel, and the use safety of the wheel is ensured. The ultrasonic detection is an important nondestructive detection method, and can detect internal defects of the wheel. At present, the ultrasonic wave is applied to detect the wheels, and the detection modes of manual detection and automatic ultrasonic flaw detection equipment mainly exist.

The manual detection efficiency is very low, and in recent years, researchers at home and abroad pay more attention to and research the automatic ultrasonic detection equipment, compared with the traditional manual detection, the automatic ultrasonic detection equipment has the greatest advantage that the inspection scanning on the whole circumferential direction of the wheels of the in-service locomotive can be realized under the condition that the wheel set is not dismounted, and the detection efficiency of the wheels is greatly improved. Before flaw detection operation is carried out on locomotive wheels by adopting ultrasonic automatic flaw detection equipment, a template wheel pair with artificial defects is needed to be used for calibrating flaw detection sensitivity so as to verify the reliability of the equipment. The existing rack for placing the sample plate wheel set is simple in structure, only provides the functions of supporting wheel sets and driven manual rotating wheels, is mainly used for manual flaw detection operation, cannot meet the requirements of novel automatic flaw detection equipment, and is used for simulating the position state of a wheel set in-situ loading.

Disclosure of Invention

The utility model aims to provide a rack for automatically detecting in-service locomotive wheels, so as to solve the problems in the prior art, avoid directly installing locomotive wheels on a flaw detection device in the prior art, simulate the position state of the locomotive wheels during in-situ loading, and ensure the accuracy of flaw detection results.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a rack for automatically detecting wheels of a locomotive in service, which comprises a mounting platform and annular supporting frames, wherein the annular supporting frames are arranged in pairs and sleeved on wheel intermediate shafts, the annular supporting frames are coaxially arranged, the axes of the annular supporting frames extend in the horizontal direction, each annular supporting frame comprises a bottom frame and a top frame which are spliced into an annular structure, the bottom frame is fixed on the mounting platform and is provided with a plurality of bottom supporting rollers for supporting the wheel intermediate shafts to hang above the wheel intermediate shafts, the bottom supporting rollers protrude out of the top edges of the bottom frame, the rotation axes of the bottom supporting rollers and the wheel intermediate shafts extend in the same direction, the top frame is detachably connected above the bottom frame, and a space for the wheel intermediate shafts to lift is reserved between the top frame and the wheel intermediate shafts.

Preferably, the top frame is provided with a top supporting roller protruding from the bottom edge of the top frame, the top supporting roller and the wheel intermediate shaft are spaced, and the rotation axis of the top supporting roller and the wheel intermediate shaft extend in the same direction.

Preferably, the top frame and the bottom frame are in concentric circular arc structures, the top supporting roller and the bottom supporting roller are respectively arranged on the top frame and the bottom frame at equal intervals along the circumferential direction, and the outer peripheral edges of the top frame and the bottom frame are respectively protruded out of the inner peripheral edges of the top frame and the bottom frame.

Preferably, the top frame and the bottom frame each comprise two parallel strip-shaped plates arranged at intervals, and the bottom supporting rollers and the top supporting rollers are respectively connected between the corresponding two strip-shaped plates in a rotating mode and respectively protrude out of the top edges and the bottom edges of the corresponding two strip-shaped plates.

Preferably, the mounting platform is provided with a fixing frame for supporting the bottom frame to be arranged above the mounting platform in a suspending manner, and the radius of locomotive wheels is not smaller than the interval between the bottom frame and the mounting platform.

Preferably, two locomotive wheels are provided with axle boxes for rotating and connecting the wheel intermediate shafts on one side far away from each other, the mounting platform is provided with a telescopic driving rod for jacking the axle boxes, and the telescopic driving rod extends along the vertical direction.

Preferably, the mounting platform is further connected with a supporting beam, the top end of the supporting beam is connected with a horizontal suspension beam for suspending the axle box, and the end part, far away from the supporting beam, of the horizontal suspension beam is hinged to the top end of the axle box.

Preferably, the mounting platform is further provided with two groups of stop center assemblies corresponding to the locomotive wheels respectively, each stop center assembly comprises a supporting block and a screw rod rotatably connected to the supporting block, one end of the screw rod is provided with a center which is abutted to the end face of the locomotive wheel, the other end of the screw rod is provided with a hand wheel which rotates and steps the screw rod, and the directions of the centers of the two stop center assemblies which are abutted to the locomotive wheel are opposite.

Preferably, the mounting platform is further provided with two groups of water collecting grooves corresponding to the locomotive wheels respectively, and each water collecting groove is correspondingly arranged below each locomotive wheel.

Preferably, the locomotive wheel is provided with flaw detection equipment in a matching way, the flaw detection equipment comprises a movable vehicle body, a friction wheel for driving the locomotive wheel to rotate is rotationally connected to the movable vehicle body, the friction wheel is connected with a driving mechanism for driving the friction wheel to rotate, a spray head for spraying water on the rim tread of the locomotive wheel is further arranged on the movable vehicle body, and the spray head is communicated with a water supply mechanism.

Compared with the prior art, the utility model has the following technical effects:

first, through the coaxial setting of each annular supporting frame, and its axis extends along the horizontal direction, with support the locomotive wheel that is connected at wheel jackshaft and its both ends, and form putting along the horizontal direction to the wheel jackshaft, and then make the axis of rotation level of locomotive wheel extend, guarantee its stable rotation under the drive of fault detection equipment, further, through setting up the detachable connection of bottom frame and top frame, dismantle the back with the top frame, can directly place the wheel jackshaft on the bottom frame, and support the top frame after, restrict the wheel jackshaft inside annular supporting frame, owing to have corresponding interval between top frame and the wheel jackshaft, make the wheel jackshaft possess certain movable stroke in the vertical direction, and support the wheel jackshaft through the bottom support gyro wheel, when needs rotate the locomotive wheel, only through lifting the wheel jackshaft a certain distance, make wheel jackshaft and bottom frame and top frame all no longer contact, again rotate and the work of detecting a flaw to the locomotive wheel drive, can not only install the wheel jackshaft more, can directly place the wheel jackshaft on the bottom frame in the locomotive prior art, and support the wheel is difficult when the wheel is in the initial position of the locomotive, and the wheel is in the time consuming time and is in the initial position of the time of rolling down, the initial contact with the wheel is avoided, the wheel is in the initial position of the initial contact, the wheel is guaranteed to the wheel is in the rolling position when the initial position of the intermediate shaft is reached, and the wheel is in the rolling position of the bottom is avoided to the rolling, and the initial position is used to the wheel is in the rolling machine to the place.

And secondly, the top frame is provided with a top supporting roller protruding out of the bottom edge of the top frame, an interval is reserved between the top supporting roller and the wheel intermediate shaft, and the rotation axis of the top supporting roller and the wheel intermediate shaft extend in the same direction, and by arranging the top supporting roller, when the wheel intermediate shaft of the driving locomotive wheel belt rotates, if the wheel intermediate shaft rotates to generate fluctuation, the top supporting roller can contact with the wheel intermediate shaft before the top frame, so that the top frame is prevented from scratching the surface of the wheel intermediate shaft.

Third, top frame and bottom frame all are concentric convex structure, and top backing roller and bottom backing roller set up on top frame and bottom frame along circumference equidistant respectively, and its peripheral edge is protruding in the interior peripheral edge of top frame and bottom frame respectively, and the bottom frame sets up to be convex structure, conveniently sets up the bottom backing roller along radial symmetry in the both sides of wheel jackshaft, and then forms stable support to the wheel jackshaft, and the top frame sets up to be convex structure for all can form corresponding interval between top frame interior peripheral edge and the wheel jackshaft, avoid the wheel jackshaft to be in the contact of pivoted in-process with the top frame.

Fourth, top frame and bottom frame all include two parallel and the strip shaped plates that the interval set up, and bottom support gyro wheel and top support gyro wheel rotate respectively and connect between two strip shaped plates that correspond to protruding respectively in the top and the bottom edge of two strip shaped plates that correspond, can guarantee the support strength to bottom support gyro wheel, wheel jackshaft through setting up two strip shaped plates, can make things convenient for bottom support gyro wheel and top support gyro wheel's installation again.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the connection of a mounting platform and an annular support frame of the present utility model;

FIG. 2 is a schematic view of the connection of the annular support frame to the intermediate axle of the wheel of the present utility model;

FIG. 3 is a schematic view of the annular support frame of the present utility model;

FIG. 4 is a schematic view showing the internal structure of the annular supporting frame of the present utility model;

FIG. 5 is a schematic view of a stop center assembly of the present utility model;

FIG. 6 is a schematic view of the axle housing and support beam connection of the present utility model;

FIG. 7 is a schematic diagram of the distribution of structures on the mounting platform of the present utility model;

FIG. 8 is a state diagram of the flaw detection apparatus of the present utility model in flaw detection operation;

the device comprises a 1-mounting platform, a 2-bottom frame, a 3-top frame, a 4-fixing frame, a 5-wheel intermediate shaft, 6-locomotive wheels, 7-annular supporting frames, 8-top supporting rollers, 9-bottom supporting rollers, 10-strip plates, 11-nylon rollers, 12-ball bearings, 13-frame pin shafts, 14-hand wheels, 15-supporting blocks, 16-screw rods, 17-tips, 18-supporting beams, 19-horizontal suspension beams, 20-positioning pin shafts, 21-lifting lugs, 22-axle boxes, 23-stop tip assemblies, 24-water collecting tanks, 25-telescopic driving rods, 26-probe groups and 27-flaw detection equipment.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model aims to provide a rack for automatically detecting in-service locomotive wheels, so as to solve the problems in the prior art, avoid directly installing locomotive wheels on a flaw detection device in the prior art, simulate the position state of the locomotive wheels during in-situ loading, and ensure the accuracy of flaw detection results.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1 to 8, this embodiment provides a rack for in-service locomotive wheel automated inspection, including mounting platform 1, set up in pairs and all cover the annular supporting frame 7 of establishing on wheel jackshaft 5, preferably mounting platform 1 is steel construction platform, steel construction platform is formed by 16# channel-section steel and 3 millimeter thickness steel sheet welding, as the bearing component, and provide basic platform for the installation of other functional parts, each annular supporting frame 7 is coaxial to be set up, and its axis all extends along the horizontal direction, annular supporting frame 7 includes bottom frame 2 and the top frame 3 of concatenation into annular structure, bottom frame 2 is fixed on mounting platform 1, and install the bottom supporting roller 9 of a plurality of support wheel jackshafts 5 unsettled top above that, bottom supporting roller 9 protrusion is in the top edge of bottom frame 2, and its axis of rotation and wheel jackshaft 5 syntropy extend, top frame 3 detachably connects in the top of bottom frame 2, and have the interval that supplies wheel jackshaft 5 to rise to remove between top frame 3 and the wheel jackshaft 5.

The wheel intermediate shaft 5 and locomotive wheels 6 connected with the two ends of the wheel intermediate shaft 5 are supported by the coaxial arrangement of the annular support frames 7, the axes of the wheel intermediate shaft extend along the horizontal direction, the wheel intermediate shaft 5 is placed along the horizontal direction, the rotation axes of the locomotive wheels 6 extend horizontally, the stable rotation of the locomotive wheels is ensured to be carried out under the driving of the flaw detection equipment 27, the top frame 3 is detached by the detachable connection of the bottom frame 2 and the top frame 3, the wheel intermediate shaft 5 can be directly placed on the bottom frame 2 for supporting, the top frame 3 is abutted, the wheel intermediate shaft 5 is limited inside the annular support frames 7, the wheel intermediate shaft 5 has a certain movable stroke in the vertical direction due to the corresponding interval between the top frame 3 and the wheel intermediate shaft 5, the wheel intermediate shaft 5 is supported by the bottom support rollers 9, when the locomotive wheel 6 is required to rotate, only the wheel intermediate shaft 5 is lifted by a certain distance, so that the wheel intermediate shaft 5 is not contacted with the bottom frame 2 and the top frame 3 any more, the locomotive wheel 6 is driven to rotate and perform flaw detection work, the installation of the wheel intermediate shaft 5 is more convenient, the condition that the locomotive wheel 6 is directly installed on a flaw detection device in the prior art is avoided, time and labor are wasted, the position state of the locomotive wheel 6 in the in-situ loading process can be simulated, the accuracy of flaw detection results is ensured, the bottom support roller 9 is arranged to be contacted with the wheel intermediate shaft 5, the wheel intermediate shaft 5 can be protected from being contacted with the bottom frame 2 no matter in initial placement or in the subsequent driving of the locomotive wheel 6 with the wheel intermediate shaft 5 to rotate, rolling support is realized, avoiding the surface of the intermediate shaft 5 of the wheel from being scratched.

The top frame 3 is provided with a top supporting roller 8 protruding from the bottom edge of the top frame, a space is reserved between the top supporting roller 8 and the wheel intermediate shaft 5, preferably about 20mm, the wheel intermediate shaft 5 can be allowed to be jacked to a certain height, the jacking is limited to be too high, the rotation axis of the wheel intermediate shaft 5 and the wheel intermediate shaft extend in the same direction, and the top supporting wheel is arranged, so that when the wheel 6 of a locomotive is driven to rotate with the wheel intermediate shaft 5, if the wheel intermediate shaft 5 rotates to fluctuate, the top supporting wheel can be used for contacting the top frame 3 with the wheel intermediate shaft 5 in advance, rolling support is realized, and the top frame 3 is prevented from scratching the surface of the wheel intermediate shaft 5.

As a preferred embodiment of the utility model, two bottom supporting rollers 9 are arranged, one top supporting roller 8 is arranged, three supporting points of the wheel intermediate shaft 5 are realized, the three supporting points are distributed at 120 degrees respectively on the axial section of the wheel intermediate shaft 5, the top supporting roller 8 is positioned at the middle position of the top of the wheel intermediate shaft 5, and the two bottom supporting rollers 9 are bottom inclined supports separated from the top supporting roller 8 by 120 degrees.

The top frame 3 and the bottom frame 2 are all in concentric circular arc structures, the top support roller 8 and the bottom support roller 9 are respectively arranged on the top frame 3 and the bottom frame 2 at equal intervals along the circumferential direction, the outer peripheral edges of the top support roller 8 and the bottom support roller 9 are respectively protruded out of the inner peripheral edges of the top frame 3 and the bottom frame 2, the bottom frame 2 is in a circular arc structure, the bottom support roller 9 is conveniently and symmetrically arranged on two sides of the wheel intermediate shaft 5 along the radial direction, and then a stable support is formed on the wheel intermediate shaft 5, the top frame 3 is in a circular arc structure, so that corresponding intervals can be formed between the inner peripheral edges of the top frame 3 and the wheel intermediate shaft 5, and the wheel intermediate shaft 5 is prevented from being contacted with the top frame 3 in the rotating process. As a preferred embodiment of the utility model, one end of the top frame 3 is correspondingly hinged to one end of the bottom frame 2, and is specifically provided with a frame pin shaft 13, so that the top frame can be rotated and opened, the wheel intermediate shaft 5 is convenient to mount, and a bolt structure is arranged between the other end of the top frame 3 and the other end corresponding to the bottom frame 2, so that the top frame and the bottom frame can be detachably fixed, and the sleeved mounting of the wheel intermediate shaft 5 is realized.

Further, the top frame 3 and the bottom frame 2 comprise two parallel strip-shaped plates 10 which are arranged at intervals, the bottom supporting roller 9 and the top supporting roller 8 are respectively connected between the two corresponding strip-shaped plates 10 in a rotating mode and respectively protrude out of the top and bottom edges of the two corresponding strip-shaped plates 10, and the supporting strength of the bottom supporting roller 9 and the wheel intermediate shaft 5 can be guaranteed through the two strip-shaped plates 10, and installation of the bottom supporting roller 9 and the top supporting roller 8 can be facilitated. The bottom supporting roller 9 and the top supporting roller 8 are nylon rollers 11, a ball bearing 12 is embedded in the middle, and a shaft is inserted in the bearing and correspondingly arranged on the two plates 10.

Moreover, the mounting platform 1 is provided with a fixing frame 4 for supporting the bottom frame 2 to be arranged above the bottom frame in a suspended manner, preferably, the fixing frame 4 adopts a square steel structure, the supporting strength of the fixing frame is improved, and the radius of the locomotive wheel 6 is not smaller than the interval between the bottom frame 2 and the mounting platform 1, so that the locomotive wheel 6 is prevented from contacting the mounting platform 1, and the rotation of the locomotive wheel is prevented from being influenced.

As a preferred embodiment of the utility model, the axle boxes 22 for the rotation connection of the wheel intermediate shafts 5 are arranged on the sides of the two locomotive wheels 6 far away from each other, the telescopic driving rods 25 for jacking the axle boxes 22 are arranged on the mounting platform 1, the telescopic driving rods 25 extend in the vertical direction, and the axle boxes 22 are jacked by the telescopic driving rods 25 and drive the wheel intermediate shafts 5 and the wheels to synchronously lift and separate from the contact with the bottom supporting rollers 9.

Further, the mounting platform 1 is also connected with a supporting beam 18, the top end of the supporting beam 18 is connected with a horizontal suspension beam 19 for suspending the axle box 22, and the end of the horizontal suspension beam 19 away from the supporting beam 18 is hinged to the top end of the axle box 22. A specific support beam 18 extends vertically, with its bottom welded to the mounting platform 1 and its top bolted to the horizontal cantilever. The horizontal cantilever beam is connected with the top of the axle box 22 by a positioning pin shaft 20 to play a hanging role, preferably, a lifting lug 21 which is rotationally connected with the pin shaft is arranged at the top of the axle box 22, the hanging positioning of the axle box 22 is realized by adopting the supporting beam 18 and the horizontal hanging beam 19, the axle box 22 is ensured to be in a normal position state, and the horizontal hanging beam 19 is preferably provided with certain flexible capability, and when the axle box 22 is jacked up along with the axle box 22, a certain movable stroke is ensured along the vertical direction.

And the mounting platform 1 is also provided with two groups of stop center assemblies 23 which respectively correspond to locomotive wheels 6, each stop center assembly 23 comprises a supporting block 15 and a screw rod 16 which is rotatably connected to the supporting block 15, one end of the screw rod 16 is provided with a center 17 which is abutted to the end face of the locomotive wheel 6, the other end of the screw rod 16 is provided with a hand wheel 14 which rotates and steps the screw rod 16, the directions of the centers 17 of the two stop center assemblies 23 abutted to the locomotive wheel 6 are opposite, and the screw rod 16 is driven to move through the hand wheel 14, so that the centers 17 are abutted to the end face of the wheel to form axial limit for the locomotive wheel 6, and the locomotive wheel is prevented from moving in the rotating process. Preferably, the supporting block 15 is welded on the mounting platform 1, a threaded hole is formed in the middle, and the screw 16 is rotatably mounted in the threaded hole.

Preferably, the mounting platform 1 is further provided with two groups of water collecting tanks 24 corresponding to the locomotive wheels 6 respectively, and the water collecting tanks 24 are square box bodies without tops and made of stainless steel plates with the thickness of 1mm, and are detachably mounted on the mounting platform 1, and the water collecting tanks 24 are correspondingly arranged below the locomotive wheels 6. The water collection problem of the coupling water is realized by adopting the water collection tank 24 structure. In operation of the inspection apparatus 27, water for ultrasonic coupling is sprayed along the wheel surface to the vicinity of the lowest point of the wheel, and the sprayed water is collected by the water collection tank 24 for centralized treatment, thereby preventing cross flow of ground sewage in the working room.

Further, the locomotive wheel 6 is matched with a flaw detection device 27, the flaw detection device 27 comprises a movable vehicle body, a friction wheel for driving the locomotive wheel 6 to rotate is rotationally connected to the movable vehicle body, the friction wheel is connected with a driving mechanism for driving the friction wheel to rotate, a spray head for spraying water on the rim tread of the locomotive wheel 6 is further arranged on the movable vehicle body, and the spray head is communicated with a water supply mechanism. The preferred telescopic drive rod 25 may also be provided on the inspection device 27 to lift the locomotive wheels 6 after the locomotive is moved into place at the locomotive wheels 6 by lifting the axle box 22 via the telescopic drive rod 25. In a specific inspection operation, the inspection device 27 drives the wheel to rotate through the friction wheel, and performs inspection scanning on the locomotive wheel 6 through the probe set 26. The spray water sprayed by the spray head falls along the tread bottom of the rim of the wheel and falls into the water collecting tank 24, the wheel rotates for a circle, flaw detection is completed, the inspection is stopped, about 1 minute, when the water on the wheel falls, the water collecting tank 24 is taken out and poured out, and then the water collecting tank is put back into the original position, the center 17 is loosened, the wheel is fallen, and the flaw detection equipment 27 is evacuated, so that the operation is completed.

The adaptation to the actual need is within the scope of the utility model.

It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims (10)

1. The utility model provides a rack for automatic detection of in-service locomotive wheel, its characterized in that includes mounting platform, sets up in pairs and all overlaps the annular supporting frame of establishing on the wheel jackshaft, each the annular supporting frame is coaxial to be set up, and its axis all extends along the horizontal direction, the annular supporting frame is including the bottom frame and the top frame of concatenation into annular structure, the bottom frame is fixed mounting platform is last, and installs a plurality of supports the unsettled bottom support gyro wheel above it of wheel jackshaft, the bottom support gyro wheel protrusion in the top edge of bottom frame, and its rotation axis with the same direction of wheel jackshaft extends, the top frame can be dismantled and connect the top of bottom frame, just have the confession between the top frame with the wheel jackshaft the interval that the wheel jackshaft jack-up removed.

2. A bench for automated inspection of in-service locomotive wheels as in claim 1 wherein said top rim is provided with top support rollers protruding from a bottom edge thereof, said top support rollers being spaced from said wheel intermediate shaft with a rotational axis extending in a direction generally parallel to said wheel intermediate shaft.

3. The stand for automated in-service locomotive wheel inspection according to claim 2, wherein the top rim and the bottom rim are each of concentric circular arc structures, the top support roller and the bottom support roller are circumferentially disposed on the top rim and the bottom rim, respectively, at equal intervals, and outer peripheral edges thereof protrude from inner peripheral edges of the top rim and the bottom rim, respectively.

4. A stand for automated in-service locomotive wheel inspection according to claim 2 or 3 wherein the top and bottom rims each comprise two parallel spaced apart strips, the bottom and top support rollers being rotatably connected between the respective two strips and projecting from the top and bottom edges of the respective two strips.

5. The automated inspection rack of claim 4, wherein the mounting platform is provided with a mount for supporting the bottom rim above the bottom rim in suspension, and wherein the radius of the locomotive wheel is not less than the spacing between the bottom rim and the mounting platform.

6. The stand for automated in-service locomotive wheel inspection according to claim 5, wherein both locomotive wheels are provided with axle boxes for rotational connection of the wheel intermediate shafts on sides thereof away from each other, and the mounting platform is provided with telescopic drive rods for lifting the axle boxes, the telescopic drive rods extending in a vertical direction.

7. A bench for automated inspection of in-service locomotive wheels as in claim 6 wherein a support beam is also connected to said mounting platform, the top end of said support beam being connected to a horizontal suspension beam for suspending said axle housing, the end of said horizontal suspension beam remote from said support beam being hinged to the top end of said axle housing.

8. The automated inspection rack for in-service locomotive wheels of claim 7, wherein the mounting platform is further provided with two sets of stop center assemblies corresponding to each locomotive wheel, the stop center assemblies comprise supporting blocks and screws rotatably connected to the supporting blocks, one end of each screw is provided with a center abutting against an end face of each locomotive wheel, the other end of each screw is provided with a hand wheel for rotating and stepping the screws, and directions of the centers of the two stop center assemblies abutting against the locomotive wheels are opposite.

9. The automated in-service locomotive wheel inspection rack of claim 8, wherein the mounting platform is further provided with two sets of water collection tanks respectively corresponding to the locomotive wheels, and each water collection tank is correspondingly arranged below each locomotive wheel.

10. The stand for automated inspection of in-service locomotive wheels of claim 9, wherein the locomotive wheels are provided with a flaw detection device, the flaw detection device comprises a mobile vehicle body, a friction wheel for driving the locomotive wheels to rotate is rotationally connected to the mobile vehicle body, the friction wheel is connected with a driving mechanism for driving the friction wheel to rotate, a spray head for spraying water on the rim treads of the locomotive wheels is further arranged on the mobile vehicle body, and the spray head is communicated with a water supply mechanism.