A high-precision measuring platform for a wheel axle of a motor train unit

Abstract

The present application belongs to the technical field of wheel axle size detection, and particularly relates to a high-speed train wheel axle full-size high-precision measurement platform, which comprises a folding flange sensing mechanism, an angle adjusting mechanism and a loading and unloading auxiliary assembly. The folding flange sensing mechanism comprises a stretching assembly, a distance sensing assembly and a folding guide wheel assembly. The stretching assembly is arranged on the angle adjusting mechanism, the distance sensing assembly is arranged in the stretching assembly, and the folding guide wheel assembly is symmetrically arranged at both ends of the stretching assembly. The present application firstly proposes a technical scheme for detecting the wheel spacing of multiple angles and simultaneously feeding back the relative position and relative angle between two wheels, so that the two common and dangerous size abnormal conditions of the overall wheel offset and the axle bending can be conveniently and quickly detected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wheel shaft size detection, and particularly relates to a high-precision measuring platform for the full size of a wheel shaft of a motor train unit. BACKGROUND

[0002] The motor train unit has high requirements for the size precision of a wheel shaft assembly due to high running speed, and the wheel shaft assembly needs to be measured during daily maintenance. In the size parameters of the wheel shaft assembly, the size parameters of parts themselves, such as the roundness, diameter of the wheel and the diameter of the shaft, are generally stable. However, the assembly size parameters, such as the wheel spacing and the deflection of the shaft, have relatively poor stability in the whole system, but are very important, and directly affect the risk of train derailment, so they need to be checked.

[0003] Since the check is performed at intervals during the use of the train, the measuring platform needs to be adapted to the layout form of the wheel shaft assembly and the bottom of the motor train unit, and needs to have the characteristics of simple operation, high efficiency and high accuracy. SUMMARY

[0004] In view of the above, in order to overcome the defects of the prior art, the application provides a high-precision measuring platform for the full size of a wheel shaft of a motor train unit. The application first proposes a technical solution for detecting the wheel spacing at multiple angles and simultaneously feeding back the relative position and relative angle between two wheels, which can conveniently and quickly detect two common and dangerous size abnormalities of the wheel and the shaft.

[0005] Since the surface matched with the wheel and the track is the outer wall of the blocking ring, the sensing guide wheel needs to extend from the inner side of the wheel to the outer side of the wheel, and directly rotating the sensing guide wheel will inevitably hit the wheel. In order to solve the interference problem of the folding guide wheel assembly with the wheel and the track, the application further proposes a folding guide wheel assembly, which can change direction without disassembling the angle adjusting mechanism by folding the folding guide wheel assembly. By pulling and then rotating, the problem of interference and impact of the sensing guide wheel and the blocking edge of the wheel can be avoided.

[0006] The technical solution adopted by the application is as follows: the application proposes a high-precision measuring platform for the full size of a wheel shaft of a motor train unit, which comprises a folding blocking edge sensing mechanism, an angle adjusting mechanism and a loading and unloading auxiliary assembly. The folding blocking edge sensing mechanism comprises a stretching assembly, a distance sensing assembly and a folding guide wheel assembly. The stretching assembly is arranged on the angle adjusting mechanism, the distance sensing assembly is arranged in the stretching assembly, and the folding guide wheel assembly is symmetrically arranged at both ends of the stretching assembly.

[0007] The distance sensing assembly can sense the telescopic amplitude of the stretching assembly, so as to judge the distance between the blocking edges of each detection position, and through the wheel distance measurement and statistics of each angle, the wheel distance change and the situation that the axle bending leads to the non-parallel of the wheels can be detected.

[0008] Preferably, the angle adjusting mechanism comprises an electromagnetic adsorption assembly and a swing assembly, the electromagnetic adsorption assembly is detachably arranged on the loading and unloading auxiliary assembly, the electromagnetic adsorption assembly is connected with the axle through magnetic attraction, and the swing assembly is slidingly arranged on the electromagnetic adsorption assembly.

[0009] The electromagnetic adsorption assembly can complete the connection and separation between the device and the axle, and based on the detection principle of the scheme, even if small amplitude axial deviation or angle deflection occurs when the electromagnetic adsorption assembly is adsorbed with the axle, the detection effect of the scheme is not affected.

[0010] Further, the stretching assembly comprises a sleeve support, a fixed sleeve and a sliding rod, the sleeve support is fixedly connected to the swing assembly, the fixed sleeve is fixedly connected to the sleeve support, the sliding rod is symmetrically arranged at two ends of the fixed sleeve, the sliding rod is clamped and slidingly arranged in the fixed sleeve, and the sliding rod and the fixed sleeve cannot rotate relative to each other.

[0011] Preferably, the distance sensing assembly comprises a reset spring, a stretching spring and a force sensor, one end of the sliding rod is provided with a flange part, the reset spring is arranged between the end wall of the fixed sleeve and the flange part, the stretching spring is arranged between the flange part and the force sensor, and the force sensor can feed back the sum of the tension of the two stretching springs.

[0012] Under the action of the reset spring, the sliding rods at two ends will not slide towards one direction at the same time when not under tension, and the convenience of single-person operation can be improved; in the form of the force sensor feeding back the tension of the stretching spring, the distance between the blocking edges of the two wheels can be measured to provide original data for statistical analysis.

[0013] As a further preferred embodiment of the present application, the folding guide wheel assembly comprises a square rod part, a folding lever and a sensing guide wheel, the square rod part is fixedly connected to the other end of the sliding rod, the square rod part is provided with a right-angle part at the end thereof, the folding lever is rotationally arranged at the root of the right-angle part, and the rotation range of the folding lever is ninety degrees.

[0014] As a further preferred embodiment of the present application, the end of the folding lever is provided with a circular shaft, the sensing guide wheel is rotationally arranged on the circular shaft, and the sensing guide wheel rolls on the blocking edge of the wheel.

[0015] The side projection size of the folding guide wheel assembly is smaller than that of the wheel when folded, so the position conversion to the other side can be completed without disassembling the electromagnetic adsorption assembly; the sensing guide wheel can abut against the outside of the baffle of the wheel when unfolded, so as to measure the size of the working surface of the wheel in contact with the track; moreover, the folding guide wheel assembly can avoid the interference between the sensing guide wheel and the baffle of the wheel during rotation by the mode of pulling out the sliding rod and then rotating the folding lever.

[0016] Further, the electromagnetic adsorption assembly comprises an arc-shaped electromagnet, swing sliding grooves and an outer rotor motor, the arc-shaped electromagnet can be adsorbed on the axle when electrified, the swing sliding grooves are symmetrically arranged at two ends of the arc-shaped electromagnet, and the central shaft of the outer rotor motor is fixedly connected to the side surface of the swing sliding groove.

[0017] As preferred, the swing assembly comprises an arc-shaped swing frame, the sleeve support is fixedly connected to the outer wall of the arc-shaped swing frame, swing sliding rails are arranged on the arc-shaped swing frame, and the swing sliding rails are slidably arranged in the swing sliding grooves.

[0018] As further preferred, the arc-shaped swing frame is provided with a hollow part at the middle position, arc-shaped inner tooth rings are symmetrically arranged on the inner side of the arc-shaped swing frame, and a gear meshing with the arc-shaped inner tooth rings is arranged on the rotating shell of the outer rotor motor.

[0019] The arc-shaped swing frame can be rotated and swung relative to the swing sliding groove by the outer rotor motor, so as to change the angle of the folding baffle sensing mechanism on the wheel.

[0020] Further, the loading and unloading auxiliary assembly comprises a base, a lifting cylinder and a lifting platform, the lifting cylinder is arranged between the base and the lifting platform, the lifting platform is provided with a connecting clamping groove, and the arc-shaped electromagnet is provided with a connecting clamping platform matched with the connecting clamping groove.

[0021] The axle assembly is composed of an axle and a wheel, and the wheel is rollingly arranged on the track.

[0022] The beneficial effects achieved by the above structure are as follows:

[0023] (1) The distance sensing assembly can sense the expansion amplitude of the stretching assembly, so as to judge the distance between the baffles of each detection position, and through the wheel distance measurement and statistics of each angle, the wheel distance change condition and the wheel non-parallel condition caused by the axle bending can be detected.

[0024] (2) The electromagnetic adsorption assembly can complete the connection and separation between the device and the axle, and based on the detection principle of the scheme, even if small amplitude axial deviation or angle deflection occurs when the electromagnetic adsorption assembly is adsorbed with the axle, the detection effect of the scheme is not affected.

[0025] (3) under the action of reset spring, the sliding rod at both ends will not slide towards one direction at the same time when not under force, and the convenience of single person operation can be improved; through the form of force sensor feedback tensile spring tension, the distance between the two wheel flanges can be measured to provide original data for statistical analysis.

[0026] (4) the folding guide wheel assembly has a small side projection outline size when folding, so that the position conversion to the other side can be completed without disassembling the electromagnetic absorption assembly; the sensing guide wheel of the folding guide wheel assembly can abut against the outside of the wheel flange when unfolding, so that the size of the working surface of the wheel in contact with the track can be measured; in addition, the sensing guide wheel can avoid interference with the wheel flange during rotation by the mode of sliding rod extraction and rotating and folding the lever.

[0027] (5) the arc-shaped swing frame can be rotated and swung relative to the swing sliding groove through the outer rotor motor, so that the angle of the folding wheel flange sensing mechanism on the wheel can be changed. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 a perspective view of a high-precision measurement platform for a wheel shaft of a motor train unit is provided;

[0029] Figure 2 a front view of a high-precision measurement platform for a wheel shaft of a motor train unit is provided;

[0030] Figure 3 a left view of a high-precision measurement platform for a wheel shaft of a motor train unit is provided;

[0031] Figure 4 a top view of a high-precision measurement platform for a wheel shaft of a motor train unit is provided;

[0032] Figure 5 is a sectional view along the cutting line A-A in the Figure 3

[0033] is a sectional view along the cutting line B-B in the Figure 6 Figure 3 is a sectional view along the cutting line C-C in the

[0034] Figure 7 Figure 5 is a sectional view along the cutting line C-C in the

[0035] Figure 8 is a sectional view along the cutting line C-C in the Figure 5

[0036] is a sectional view along the cutting line C-C in the Figure 9 Figure 6 is a sectional view along the cutting line C-C in the​​​

[0037] Figure 10 Fig. 1 is a schematic view of the detection range of the present application; Figure 6 Fig. 2 is a partial enlarged view of the folding guide wheel assembly;

[0038] Figure 11 Fig. 3 is a schematic view of the opening and closing of the folding guide wheel assembly;

[0039] Figure 12 Fig. 4 is a schematic view of the detection range of the present application;

[0040] Figure 13 Fig. 5 is a schematic view of the indication relationship of the measured angle and force sensor.

[0041] Wherein, 1, folding type blocking edge sensing mechanism, 2, angle adjusting mechanism, 3, loading and unloading auxiliary assembly, 4, wheel shaft assembly, 5, stretching assembly, 6, distance sensing assembly, 7, folding guide wheel assembly, 8, sleeve support, 9, fixed sleeve, 10, sliding rod, 11, reset spring, 12, stretching spring, 13, force sensor, 14, square rod part, 15, folding rod, 16, sensing guide wheel, 17, flange part, 18, right angle part, 19, round shaft, 20, electromagnetic adsorption assembly, 21, swinging assembly, 22, arc-shaped electromagnet, 23, swinging sliding groove, 24, outer rotor motor, 25, arc-shaped swinging frame, 26, arc-shaped inner gear ring, 27, connecting clamping table, 28, hollow part, 29, base, 30, lifting cylinder, 31, lifting platform, 32, connecting clamping groove, 33, axle, 34, wheel, 35, track, 36, swinging sliding rail.

[0042] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] As Figures 1 to 10As shown, the application provides a high-precision measuring platform for the wheel shaft of a motor train unit, which comprises a folding blocking edge sensing mechanism 1, an angle adjusting mechanism 2 and a loading and unloading auxiliary assembly 3, the folding blocking edge sensing mechanism 1 comprises a stretching assembly 5, a distance sensing assembly 6 and a folding guide wheel assembly 7, the stretching assembly 5 is arranged on the angle adjusting mechanism 2, the distance sensing assembly 6 is arranged in the stretching assembly 5, and the folding guide wheel assembly 7 is symmetrically arranged at the two ends of the stretching assembly 5.

[0046] The distance sensing assembly 6 can sense the stretching amplitude of the stretching assembly 5, so as to judge the distance between the blocking edges at each detection position, and through the wheel distance measurement and statistics at each angle, the change of the wheel distance can be detected, and the situation that the wheel 34 is not parallel due to the bending of the axle 33 can also be detected.

[0047] The angle adjusting mechanism 2 comprises an electromagnetic adsorption assembly 20 and a swinging assembly 21, the electromagnetic adsorption assembly 20 is detachably arranged on the loading and unloading auxiliary assembly 3, the electromagnetic adsorption assembly 20 is connected with the axle 33 through magnetic attraction, and the swinging assembly 21 is slidingly arranged on the electromagnetic adsorption assembly 20.

[0048] The electromagnetic adsorption assembly 20 can complete the connection and separation between the device and the axle 33, and based on the detection principle of the scheme, even if small amplitude axial deviation or angle deflection occurs when the electromagnetic adsorption assembly 20 is adsorbed with the axle 33, the detection effect of the scheme is not affected.

[0049] The stretching assembly 5 comprises a sleeve support 8, a fixed sleeve 9 and a sliding rod 10, the sleeve support 8 is fixedly connected to the swinging assembly 21, the fixed sleeve 9 is fixedly connected to the sleeve support 8, the sliding rod 10 is symmetrically arranged at the two ends of the fixed sleeve 9, the sliding rod 10 is slidingly arranged in the fixed sleeve 9, and the sliding rod 10 and the fixed sleeve 9 cannot rotate relative to each other.

[0050] The distance sensing assembly 6 comprises a reset spring 11, a stretching spring 12 and a force sensor 13, one end of the sliding rod 10 is provided with a flange part 17, the reset spring 11 is arranged between the end wall of the fixed sleeve 9 and the flange part 17, the stretching spring 12 is arranged between the flange part 17 and the force sensor 13, and the sum of the tension of the two stretching springs 12 can be fed back through the force sensor 13.

[0051] Under the action of the reset spring 11, the two ends of the sliding rod 10 will not slide towards the same direction at the same time when not under tension, and the convenience of single-person operation can be improved; the distance between the blocking edges of the two wheels 34 can be measured in the form of the tension of the stretching spring 12 fed back by the force sensor 13, so as to provide original data for statistical analysis.

[0052] The folding guide wheel assembly 7 comprises a square rod part 14, a folding rod 15 and a sensing guide wheel 16. The square rod part 14 is fixed to the other end of the sliding rod 10. The square rod part 14 is provided with a right angle part 18 at the end thereof. The folding rod 15 is rotatably arranged at the root of the right angle part 18. The rotating range of the folding rod 15 is 90 degrees.

[0053] The end of the folding rod 15 is provided with a round shaft 19. The sensing guide wheel 16 is rotatably arranged on the round shaft 19. The sensing guide wheel 16 rolls on the flange of the wheel 34.

[0054] The side projection size of the folding guide wheel assembly 7 is smaller than the wheel 34 when it is folded. Therefore, the position conversion to the other side can be completed without disassembling the electromagnetic attraction assembly 20. When the folding guide wheel assembly 7 is unfolded, the sensing guide wheel 16 can abut against the outside of the flange of the wheel 34. Thus, the size of the working surface of the wheel 34 which contacts the track 35 can be measured. Furthermore, the interference between the sensing guide wheel 16 and the flange of the wheel 34 during the rotation can be avoided by rotating the folding rod 15 after the sliding rod 10 is pulled out.

[0055] The electromagnetic attraction assembly 20 comprises an arc-shaped electromagnet 22, a swing sliding groove 23 and an outer rotor motor 24. The arc-shaped electromagnet 22 can be attracted to the axle 33 when it is electrified. The swing sliding groove 23 is symmetrically arranged at the two ends of the arc-shaped electromagnet 22. The central shaft of the outer rotor motor 24 is fixed to the side surface of the swing sliding groove 23.

[0056] The swing assembly 21 comprises an arc-shaped swing frame 25. The sleeve support 8 is fixed to the outer wall of the arc-shaped swing frame 25. The arc-shaped swing frame 25 is provided with a swing sliding rail 36. The swing sliding rail 36 is slidably arranged in the swing sliding groove 23.

[0057] The middle position of the arc-shaped swing frame 25 is provided with a hollow part 28. The inner side of the arc-shaped swing frame 25 is symmetrically provided with an arc-shaped inner gear ring 26. The rotating housing of the outer rotor motor 24 is provided with a gear which is engaged with the arc-shaped inner gear ring 26.

[0058] The arc-shaped swing frame 25 can be rotated and swung relative to the swing sliding groove 23 by the outer rotor motor 24. Thus, the angle of the folding flange sensing mechanism 1 on the wheel 34 can be changed.

[0059] The loading and unloading auxiliary assembly 3 comprises a base 29, a lifting cylinder 30 and a lifting platform 31. The lifting cylinder 30 is arranged between the base 29 and the lifting platform 31. The lifting platform 31 is provided with a connecting clamping groove 32. The arc-shaped electromagnet 22 is provided with a connecting clamping platform 27 which is matched with the connecting clamping groove 32.

[0060] The wheel shaft assembly 4 is composed of the axle 33 and the wheel 34. The wheel 34 is rollingly arranged on the track 35.

[0061] As shown in the figures, Figure 11As shown, the folding guide wheel assembly 7 cannot rotate from one side to the other side of the wheel 34 when unfolded because it needs to go around the outside of the wheel 34, and it will be blocked by the track 35 from below and by the mounting seat of the axle 33 from above; the dotted outline represents the state of the folding guide wheel assembly 7 after folding, at which time it can rotate from one side to the other side of the wheel 34;

[0062] a and b represent the swinging trajectories of the edge of the induction guide wheel 16 when the folding lever 15 rotates while the sliding lever 10 is pulled to different positions; if the folding lever 15 is directly rotated to unfold, interference will occur between the induction guide wheel 16 and the wheel 34; if the folding lever 15 is rotated to unfold after the sliding lever 10 is pulled to the limit position, no interference will occur between the induction guide wheel 16 and the wheel 34.

[0063] As shown, Figure 12 The dotted lines on both sides represent the detectable range of the present scheme, and the top cannot be detected because the mounting seat of the axle 33 will interfere with the fixed sleeve 9, and the bottom cannot be detected because the track 35 will interfere with the folding guide wheel assembly 7; by detecting the wheel spacing in the two side areas, it can still be determined whether the wheel spacing of the wheel axle assembly 4 changes or the axle 33 is bent abnormally.

[0064] As shown, Figure 13 The horizontal axis represents the measured angle a of the wheel 34, and the vertical axis represents the reading F of the force sensor 13; the two vertical lines represent the bottom of the wheel 34 that cannot be detected, so the values in them are interpolated by software compensation, and the dotted line represents them.

[0065] If D is the reference value, straight line A represents that the spacings of the various measured points of the wheel 34 are the same and equal to the reference value, at which time it indicates that the wheel spacing of the wheel axle assembly 4 and the deflection of the axle 33 are qualified; straight line B represents that the spacings of the various measured points of the wheel 34 are the same but not equal to the reference value, at which time it indicates that the wheel spacing of the wheel 34 has changed; curve C represents that the two wheels 34 are no longer parallel, which may be caused by the bending of the axle 33 and the change of the angle of the wheel 34.

[0066] In specific use, first, the user needs to move the angle adjusting mechanism 2 as a whole to the directly below the axle 33 by manually or electrically pushing the dismounting and mounting auxiliary assembly 3, and then the arc-shaped electromagnet 22 gradually approaches the axle 33 by the extension of the lifting cylinder 30, and because there are notches in the arc-shaped electromagnet 22 and the top of the arc-shaped swinging frame 25, no interference will occur during the rising process.

[0067] After the arc-shaped electromagnet 22 and the axle 33 are in contact, the arc-shaped electromagnet 22 and the axle 33 are magnetically attracted by energization, at which time the lifting platform 31 is lowered and reset by the retraction of the lifting cylinder 30, and the connecting clamping groove 32 and the connecting clamping table 27 are separated, and then the loading and unloading auxiliary assembly 3 is temporarily moved to the side along the direction of the track 35, and the electromagnetic adsorption assembly 20 is adsorbed and connected with the axle 33, and even if a small amount of axial offset or angular deflection occurs, it does not affect the subsequent detection effect of the scheme.

[0068] Then the outer rotor motor 24 is started and drives the arc-shaped swing frame 25 to slide relative to the swing sliding groove 23, and the arc-shaped swing frame 25 slides to change the angle of the folding edge sensing mechanism 1, and is adjusted to the starting angle of the top on one side, and then the folding lever 15 is manually rotated and unfolded;

[0069] When unfolding, the following steps need to be paid attention to: first, the square rod part 14 and the sliding rod 10 are pulled out to the limit position, then the folding lever 15 is rotated by ninety degrees (so that the induction guide wheel 16 does not collide with the edge of the wheel 34 during the unfolding process), and then the square rod part 14 is loosened, and the sliding rod 10 will be retracted under the elastic force of the reset spring 11 and the tension spring 12 and make the induction guide wheel 16 abut against the outside of the edge of the wheel 34;

[0070] The other side of the folding guide wheel assembly 7 is unfolded in the same way, and then the outer rotor motor 24 is started again, and the folding edge sensing mechanism 1 slowly scans the angle range shown by the dotted line in the figure. Figure 12

[0071] In the above process, the force sensor 13 can feedback the elastic force and deformation of the two tension springs 12, and then feedback the distance between the two sliding rods 10 and the wheel spacing of the wheel shaft assembly 4.

[0072] After one side of the test is completed, the sliding rod 10 is pulled out and the folding lever 15 is folded, and the folded folding lever 15 has a smaller profile than the profile of the wheel 34, so that it can be adjusted from the bottom to the other side of the wheel 34 by swinging the arc-shaped swing frame 25, and then the wheel spacing on the other side is measured according to the same steps.

[0073] After the test is completed, the following figure is obtained Figure 13 ​The straight line A represents that the distance between each measuring point of the wheel 34 is the same as the reference value, which means that the wheel distance of the wheelset assembly 4 and the deflection of the axle 33 are qualified; the straight line B represents that the distance between each measuring point of the wheel 34 is the same but not equal to the reference value, which means that the wheel distance of the wheel 34 changes, and the too large or too small wheel distance will increase the risk of the motor train set derailing; the curve C represents that the two wheels 34 are no longer parallel, which may be caused by the angle change of the wheel 34 due to the bending of the axle 33, if the axle 33 is bent, not only the height of the carriage will fluctuate when traveling, but also the wheel distance will be affected and the risk of derailing will be increased.

[0074] After the detection on both sides is completed, the loading and unloading auxiliary assembly 3 is moved back under the angle adjusting mechanism 2, the connecting clamping table 27 and the connecting clamping groove 32 are clamped and connected, the power supply of the arc-shaped electromagnet 22 is disconnected, and then the device can be removed from the axle 33 to measure the next wheelset assembly 4.

[0075] It should be noted that the relational terms herein such as first and second are used only to differentiate one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In addition, the terms "comprise", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0076] The above describes the present application and its embodiments, which are not limited, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the present application.

Claims

1. A high-precision full-size measurement platform for EMU wheel axles, characterized by: The invention comprises a foldable side guard sensing mechanism (1), an angle adjustment mechanism (2) and a loading and unloading auxiliary component (3); the foldable side guard sensing mechanism (1) comprises a stretching component (5), a distance sensing component (6) and a folding guide wheel component (7); the stretching component (5) is arranged on the angle adjustment mechanism (2); the distance sensing component (6) is arranged in the stretching component (5); and the folding guide wheel component (7) is symmetrically arranged at both ends of the stretching component (5); The angle adjustment mechanism (2) comprises an electromagnetic adsorption component (20) and a swing component (21); the electromagnetic adsorption component (20) is detachably mounted on the loading and unloading auxiliary component (3); the electromagnetic adsorption component (20) is connected to the axle (33) via magnetic attraction; and the swing component (21) is slidably mounted on the electromagnetic adsorption component (20); The stretching assembly (5) comprises a sleeve bracket (8), a fixed sleeve (9) and a sliding rod (10), wherein the sleeve bracket (8) is fixed to the swing assembly (21), the fixed sleeve (9) is fixed to the sleeve bracket (8), the sliding rod (10) is symmetrically arranged at both ends of the fixed sleeve (9), the sliding rod (10) is engaged and slidably arranged in the fixed sleeve (9), and the sliding rod (10) and the fixed sleeve (9) cannot rotate relative to each other; The distance sensing assembly (6) includes a reset spring (11), a tension spring (12) and a force sensor (13); a flange portion (17) is provided at one end of the sliding rod (10); the reset spring (11) is provided between the end wall of the fixed sleeve (9) and the flange portion (17); the tension spring (12) is provided between the flange portion (17) and the force sensor (13); and the force sensor (13) can feedback the sum of the tensions of the two tension springs (12); The electromagnetic adsorption assembly (20) comprises an arc-shaped electromagnet (22), a swinging chute (23) and an outer rotor motor (24); the arc-shaped electromagnet (22) can be adsorbed on the axle (33) when energized; the swinging chute (23) is symmetrically arranged at both ends of the arc-shaped electromagnet (22); and the central axis of the outer rotor motor (24) is fixed to the side of the swinging chute (23); The swing assembly (21) includes an arc-shaped swing frame (25), the sleeve bracket (8) is fixed to the outer wall of the arc-shaped swing frame (25), and the arc-shaped swing frame (25) is provided with a swing slide rail (36), and the swing slide rail (36) is slidably arranged in the swing slide groove (23); A hollow portion (28) is provided in the middle of the arc-shaped swing frame (25), an arc-shaped inner gear ring (26) is symmetrically provided on the inner side of the arc-shaped swing frame (25), and a gear meshing with the arc-shaped inner gear ring (26) is provided on the rotating housing of the outer rotor motor (24).

2. The high-precision full-size measurement platform for EMU wheel axles according to claim 1, characterized in that: The folding guide wheel assembly (7) includes a square rod (14), a folding rod (15) and an induction guide wheel (16). The square rod (14) is fixed to the other end of the sliding rod (10). The end of the square rod (14) is provided with a right-angle portion (18). The folding rod (15) is rotatably provided at the root of the right-angle portion (18). The rotation range of the folding rod (15) is ninety degrees.

3. The high-precision full-size measurement platform for EMU wheel axles according to claim 2, characterized in that: A circular shaft (19) is provided at the end of the folding rod (15), and the induction guide wheel (16) is rotatably provided on the circular shaft (19), and the induction guide wheel (16) rolls on the retaining edge of the wheel (34).

4. The high-precision full-size measurement platform for EMU wheel axles according to claim 3, characterized in that: The loading and unloading auxiliary component (3) comprises a base (29), a lifting cylinder (30) and a lifting platform (31); the lifting cylinder (30) is arranged between the base (29) and the lifting platform (31); a connecting card slot (32) is provided on the lifting platform (31); and a connecting card platform (27) matching the connecting card slot (32) is provided on the arc-shaped electromagnet (22).

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