Railway bearing inner and outer diameter detection device

Abstract

The present application relates to railway bearing detection technical field, specifically disclose a kind of railway bearing inner and outer diameter detection device, comprising: main frame, detection mechanism, rotating speed detection mechanism and railway bearing, the detection mechanism is arranged in the front side center of main frame, the rotating speed detection mechanism is arranged on main frame, the railway bearing is placed in the front side of main frame.This device can complete the comprehensive detection of bearing inner and outer diameter roundness, radius extreme value and rotation smoothness by once clamping, significantly improve the detection efficiency, at the same time, the combined application of magnetostrictive displacement sensor and encoder makes the detection accuracy reach micron level, effectively reduces the missed detection rate and misjudgment rate, provides more comprehensive solution for the quality control of railway bearing, so as to guarantee the safety and stability of train operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway bearing detection, in particular to a railway bearing inner and outer diameter detection device. BACKGROUND

[0002] As a key component in the rail transit system, the railway bearing bears the important responsibility of supporting the train wheelset, transmitting power and ensuring the smooth running of the train. The stability and reliability of its performance are directly related to the safety and comfort of train operation. Railway bearings usually work under harsh conditions of high load and high speed rotation, which requires the bearing not only to have sufficient strength and hardness, but also to have good wear resistance, fatigue resistance and smooth rotation. Any minor processing defects, assembly errors or insufficient lubrication may cause the bearing to jam, uneven friction or abnormal noise during operation, and further cause overheating, accelerated wear, and even bearing failure, which seriously threatens the safety of train operation.

[0003] In view of the above characteristics of railway bearings, it is particularly important to conduct strict quality detection. Among them, the detection of inner and outer diameters is one of the key links for evaluating the quality of bearings. The size accuracy and roundness of the inner and outer diameters of the bearing directly affect the matching accuracy with the wheelset, and further affect the running stability and safety of the train. If the inner and outer diameters of the bearing are out of tolerance or have poor roundness, it will cause the matching gap between the bearing and the wheelset to be too large or too small, causing vibration, noise, and even bearing overheating, early failure, etc. In addition, the smoothness of rotation of the bearing is also an important indicator of its quality, which reflects the friction characteristics and stability of the bearing at high speed rotation, and has a direct impact on the stability of train operation and the comfort of passengers.

[0004] However, in the existing railway bearing detection technology, most of the equipment can only detect the inner and outer diameter size or roundness of the bearing, and cannot simultaneously detect multiple indicators. At the same time, it cannot comprehensively evaluate the smoothness of rotation of the bearing, which leads to the need for multiple clamping and detection of the bearing in actual production process, not only increasing the detection cost and time, but also possibly introducing additional errors due to multiple clamping, affecting the accuracy of the detection results. It is particularly important that the failure of railway bearings often has suddenness and disaster, such as hidden processing defects or improper assembly inside the bearing, which may not be found in regular detection, but may rapidly deteriorate under high load and high speed rotation conditions, leading to serious accidents such as train derailment. Therefore, the development of a comprehensive detection device capable of simultaneously detecting the maximum and minimum radii, roundness and smoothness of rotation of the railway bearing is of great significance for improving the quality of bearings and ensuring the safety of train operation. SUMMARY

[0005] The railway bearing inner and outer diameter detection device aims to solve the problems of single function of the existing detection equipment, inability to simultaneously detect the maximum radius and minimum radius, roundness and rotation smoothness of the inner and outer diameters of the railway bearing, low detection efficiency, insufficient accuracy and difficulty in comprehensively evaluating the bearing quality, and further influence on train operation safety.

[0006] To achieve the above object, the present application provides the following technical scheme: a railway bearing inner and outer diameter detection device, comprising: a main frame, a first limiting groove, a second limiting groove, a first guide rod, a detection mechanism, a first driving disc, a first driving groove, a second clamping rod, a first rotating rod, a first gear, a torque sensor, a first motor, a rotating speed detection mechanism and a railway bearing, the front side of the main frame is provided with a first limiting groove at the upper and lower ends in the up-down direction, which is connected with the inner cavity of the main frame, the front side of the main frame is provided with a second limiting groove at the left and right ends in the left-right direction, which is connected with the inner cavity of the main frame, the left and right ends of the first guide rod are respectively arranged on the left and right sides of the inner cavity of the second limiting groove, the detection mechanism is arranged at the center of the front side of the main frame, the first driving disc is rotatably sleeved in the middle part of the outer wall of the detection mechanism through a bearing, the first driving disc is located in the inner cavity of the main frame, the front and rear sides of the left and right ends of the first driving disc are provided with a first driving groove in the front and rear direction along the arc, the middle part of the outer wall of the second clamping rod is slidably and adaptively inserted into the inner cavity of the second limiting groove, the second clamping rod is slidably sleeved on the outer wall of the first guide rod, the rear side of the outer wall of the second clamping rod is slidably and adaptively inserted into the inner cavity of the first driving groove corresponding to its position, the front end of the second clamping rod is slidably extended out of the front side of the main frame, the front end of the first rotating rod is rotatably arranged on the left end of the inner cavity of the main frame through a bearing, the rear end of the first rotating rod is rotatably extended out of the rear side of the main frame, the first gear is sleeved on the outer wall of the first rotating rod and locked by a top wire, the first gear is engaged with the first driving disc, the first motor is screw-connected to the left end of the rear side of the main frame, the rear end of the first rotating rod is locked on the output end of the first motor through a shaft coupling, the rotating speed detection mechanism is arranged on the main frame, and the railway bearing is placed on the front side of the main frame.

[0007] Preferably, the rotation speed detection mechanism comprises a second driving disc, a second driving slot, a first sliding slot, a first clamping rod, a clamping piece, an encoder, a second rotating rod, a second gear, a second motor and a third motor, the second driving disc is rotatably sleeved on the rear part of the outer wall of the detection mechanism through a bearing, the second driving disc is located in the inner cavity of the main frame, the front side of the second driving disc is provided with a second driving slot penetrating front and back along the arc on the upper and lower ends, the front side of the second driving disc is provided with a first sliding slot penetrating front and back along the arc on the left end, the outer wall of the first rotating rod is slidably and adaptively inserted into the inner cavity of the first sliding slot, the number of the first clamping rod is two, the outer wall of the two first clamping rods is slidably and rotatably and adaptively inserted into the inner cavities of the two first limiting slots, the outer wall of the rear part of the first clamping rod is slidably and adaptively inserted into the inner cavity of the second driving slot corresponding to its position, the front end of the first clamping rod extends out of the front side of the main frame, the number of the clamping piece is four, the four clamping pieces are respectively arranged on the front and back sides of the outer wall of the two first clamping rods, and the four clamping pieces are in contact with the main frame, the encoder is arranged on the rear side of the inner cavity of the main frame, the rear end of the upper first clamping rod is connected with the encoder, the front end of the second rotating rod is rotatably arranged on the right end of the front side of the inner cavity of the main frame through a bearing, the rear end of the second rotating rod rotatably extends out of the rear side of the main frame, the second gear is sleeved on the outer wall of the second rotating rod and locked by a jackscrew, the second gear and the second driving disc are engaged, the second motor is screw-connected to the right end of the rear side of the main frame, the rear end of the second rotating rod is locked on the output end of the second motor through a shaft coupling, and the third motor is screw-connected to the middle part of the rear side of the main frame.

[0008] Preferably, the rear sides of the first rotating rod and the second rotating rod are provided with torque sensors.

[0009] Preferably, the detection mechanism comprises a first connecting rod, a second sliding groove, an adjusting assembly, a first lifting cylinder, a second connecting rod, a second guide rod, a second electric telescopic rod, a driving block, a conversion assembly, a sleeve and a second lifting cylinder, the middle part of the outer wall of the first connecting rod is rotatably arranged on the middle part of the front side of the main frame through a bearing, the rear end of the first connecting rod penetrates the inner cavity of the main frame and is rotatably extended out of the rear side of the main frame, the first driving disc and the second driving disc are rotatably sleeved on the outer wall of the first connecting rod through bearings, the rear end of the first connecting rod is locked on the output end of the third motor through a shaft coupling, the left and right sides of the inner cavity of the first connecting rod are provided with second sliding grooves in the front-rear direction, the front end of the first connecting rod penetrates the inner cavity of the railway bearing, the adjusting assembly is arranged in the inner cavity of the first connecting rod, the first lifting cylinder is slidably and adaptively inserted into the inner cavity of the adjusting assembly, the upper and lower ends of the first lifting cylinder are slidably and adaptively extended out of the upper and lower sides of the first connecting rod, one end of the second connecting rod is arranged on the front end of the first connecting rod, the number of the second guide rods is two, the left and right ends of the two second guide rods are arranged on the left and right sides of the inner cavity of the second connecting rod, the second electric telescopic rod is arranged in the inner cavity of the second connecting rod, the driving block is slidably and adaptively inserted into the inner cavity of the second connecting rod, the driving block is slidably sleeved on the outer wall of the second guide rod, the right end of the second electric telescopic rod is arranged on the left side of the driving block, the conversion assembly is arranged in the inner cavity of the driving block, the sleeve is rotatably arranged on the middle part of the rear side of the driving block through a bearing, the conversion assembly can drive the sleeve to rotate, the second lifting cylinder is inserted into the inner cavity of the sleeve, and the right end of the second lifting cylinder is provided with a pressing cavity.

[0010] Preferably, the detection mechanism further comprises a detection assembly and a driving assembly, the detection assembly is arranged in the inner cavities of the first lifting cylinder and the second lifting cylinder, and the driving assembly is arranged in the inner cavity of the pressing cavity.

[0011] Preferably, the adjusting assembly comprises a first electric telescopic rod, a driving frame, a sliding block and a driving column, the first electric telescopic rod is arranged on the rear side of the inner cavity of the first connecting rod, the driving frame is slidably and adaptively inserted into the inner cavity of the first connecting rod, the front end of the first electric telescopic rod is arranged on the rear side of the driving frame, the left and right sides of the driving frame are provided with third driving grooves which are in communication with the inner cavities of the driving frame in the inclined direction, the first lifting cylinder is slidably and adaptively inserted into the inner cavity of the driving frame, the number of the sliding blocks is four, the four sliding blocks are respectively arranged on the left and right sides of the front and rear ends of the driving frame, the four sliding blocks are respectively slidably and adaptively inserted into the inner cavities of the two second sliding grooves, the number of the driving columns is two, the two driving columns are respectively arranged on the left and right sides of the middle part of the outer wall of the first lifting cylinder, and the two driving columns are respectively slidably and adaptively inserted into the inner cavities of the two third driving grooves.

[0012] Preferably, the detection assembly comprises: trigger assemblies, probes, balls, springs and magnetostrictive displacement sensors, the number of the trigger assemblies is two, the two trigger assemblies are arranged in the middle of the inner cavities of the first lifting cylinder and the second lifting cylinder respectively, the number of the probes is two, the two probes are slidably inserted into the inner cavities of the first lifting cylinder and the second lifting cylinder respectively, the outer ends of the two probes are slidably extended out of the inner cavities of the first lifting cylinder and the second lifting cylinder respectively, the balls are rollingly embedded in the outer ends of the probes, the number of the springs is two, the two springs are sleeved on the outer walls of the two probes respectively, one end of each of the two springs is clamped on the outer wall of each of the two probes, the other end of each of the two springs is clamped on the inner wall of the first lifting cylinder and the second lifting cylinder respectively, the number of the magnetostrictive displacement sensors is two, the two magnetostrictive displacement sensors are arranged on the inner sides of the inner cavities of the first lifting cylinder and the second lifting cylinder respectively, and the outer ends of the magnetostrictive displacement sensors are arranged on the inner ends of the probes.

[0013] Preferably, the trigger assembly comprises: first contacts and second contacts, the number of the first contacts is two, the two first contacts are arranged in the middle of the inner cavities of the first lifting cylinder and the second lifting cylinder respectively, the number of the second contacts is two, the two second contacts are arranged on the outer walls of the two probes respectively, the first contacts and the second contacts are in contact, and the two second contacts are electrically connected with the first electric telescopic rod and the second electric telescopic rod respectively.

[0014] Preferably, the driving assembly comprises: a pressure sensor, a pressure rod and a rubber head, the pressure sensor is arranged on the inner side of the inner cavity of the extrusion cavity, the pressure rod is slidably inserted into the inner cavity of the extrusion cavity, the outer end of the pressure rod is slidably extended out of the inner cavity of the extrusion cavity, and the rubber head is arranged on the outer end of the pressure rod.

[0015] Preferably, the outer walls of the front sides of the first clamping rod and the second clamping rod are fixedly sleeved with rubber rollers.

[0016] The railway bearing inner and outer diameter detection device provided by the application has the beneficial effects that:

[0017] 1、The first motor and the second motor are used for driving the first driving disc and the second driving disc to rotate respectively, the second clamping rod and the first clamping rod are driven to move inward synchronously, the railway bearing is accurately clamped and fixed, the center of the bearing is ensured to be coaxial with the detection mechanism, a stable foundation is provided for subsequent high-precision detection, and errors caused by manual clamping are avoided.

[0018] 2、The utility model utilizes first electric telescopic rod and second electric telescopic rod adjusts the position of first lifting cylinder and second lifting cylinder respectively, makes the probe contact with the inner wall and outer wall of bearing, and records the initial position through spring and contact system, realizes the accurate initial positioning of probe, ensures the consistency of detection starting point, provides reliable benchmark for subsequent roundness measurement.

[0019] 3、The utility model starts third motor and drives detection mechanism to rotate, the probe slides along the inner wall and outer wall of bearing, and magnetostrictive displacement sensor records the moving distance of probe in real time, obtains the roundness data of the inner diameter and outer diameter of bearing through circumferential scanning, can accurately identify irregular circular defect, avoids the limitation of traditional single point detection, and according to the moving distance of electric telescopic rod and the detection data of magnetostrictive displacement sensor, calculates the maximum radius and minimum radius of the inner diameter and outer diameter of bearing, passes through quantization radius extreme value, provides direct basis for evaluating bearing machining precision, effectively avoids the assembly problem caused by radius out of tolerance.

[0020] 4、The utility model simulates the running state under the actual working condition of bearing through the friction force of rubber head and bearing outer wall, and the rotation speed and time are detected by encoder, and then the running state under the actual working condition of bearing is simulated, the rotation smoothness can be comprehensively evaluated, and potential faults such as jamming and uneven friction can be found in time.

[0021] 5、The device can complete the comprehensive detection of the roundness, radius extreme value and rotation smoothness of the inner diameter and outer diameter of bearing through one clamping, which significantly improves the detection efficiency, and the combination of magnetostrictive displacement sensor and encoder makes the detection precision reach micrometer level, effectively reduces the missed detection rate and misjudgment rate, and provides a more comprehensive solution for the quality control of railway bearing, thereby ensuring the safety and stability of train operation. ACCURACY

[0022] Figure 1 It is a structural schematic view of the utility model;

[0023] Figure 2 It is a rear view of the utility model;

[0024] Figure 3 It is a front view of the utility model;

[0025] Figure 4 It is a structural schematic view of the inner cavity of the main frame;

[0026] Figure 5 It is an explosion view of the utility model;

[0027] Figure 6 It is a structural schematic view of the detection mechanism;

[0028] Figure 7 It is an explosion view of the detection mechanism;

[0029] Figure 8 is a sectional view of the second lifting cylinder;

[0030] Figure 9 is an enlarged view of A of Figure 3 ;

[0031] Figure 10 is an enlarged view of B of Figure 5 ;

[0032] Figure 11 is an enlarged view of C of Figure 7 ;

[0033] Figure 12 is an enlarged view of D of Figure 8 ;

[0034] Figure 13 is an enlarged view of E of Figure 8 .

[0035] In the figure: 1, main frame; 2, first limiting slot; 3, second limiting slot; 4, first guide rod; 5, detection mechanism; 51, first connecting rod; 52, second sliding groove; 53, first electric telescopic rod; 54, driving frame; 55, sliding block; 56, third driving groove; 57, first lifting cylinder; 58, driving column; 59, second connecting rod; 510, second guide rod; 511, second electric telescopic rod; 512, driving block; 513, fourth motor; 514, third rotating rod; 515, sleeve; 516, second lifting cylinder; 517, first contact point; 518, probe; 519, ball; 520, spring; 521, second contact point; 522, magnetostrictive displacement sensor; 523, extrusion cavity; 524, pressure sensor; 525, pressing rod; 526, rubber head; 6, first driving disc; 7, first driving groove; 8, second clamping rod; 9, first rotating rod; 10, first gear; 11, torque sensor; 12, first motor; 13, second driving disc; 14, second driving groove; 15, first sliding groove; 16, first clamping rod; 17, clamping piece; 18, encoder; 19, second rotating rod; 20, second gear; 21, second motor; 22, third motor; 23, railway bearing; 24, rubber roller. DETAILED DESCRIPTION

[0036] 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 a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] Please refer to Figures 1-13The application provides a railway bearing inner and outer diameter detection device technical scheme, which comprises a main frame 1, a first limiting groove 2, a second limiting groove 3, a first guide rod 4, a detection mechanism 5, a first driving disc 6, a first driving groove 7, a second clamping rod 8, a first rotating rod 9, a first gear 10, a torque sensor 11, a first motor 12, a rotating speed detection mechanism and a railway bearing 23. First limiting grooves 2 are formed in the upper and lower ends of the front side of the main frame 1 and are in communication with the inner cavities of the main frame 1. Second limiting grooves 3 are formed in the left and right ends of the front side of the main frame 1 and are in communication with the inner cavities of the main frame 1. The left and right ends of the first guide rod 4 are respectively arranged on the left and right sides of the inner cavities of the second limiting grooves 3. The detection mechanism 5 is arranged on the front side center of the main frame 1. The detection mechanism 5 integrates multiple detection functions, realizes accurate measurement and roundness evaluation of the inner and outer diameters of the railway bearing 23, the first driving disc 6 is rotatably sleeved in the middle part of the outer wall of the detection mechanism 5 through a bearing, the first driving disc 6 is located in the inner cavity of the main frame 1, first driving grooves 7 are formed in the front and rear ends of the front side of the first driving disc 6 and penetrate the first driving disc 6, the first driving disc 6 is a key component for power transmission, the first driving disc 6 drives the movement of the second clamping rod 8 through rotation, automatic clamping and releasing of the railway bearing 23 to be measured are realized, and the detection efficiency is improved. The middle part of the outer wall of the second clamping rod 8 is slidably and adaptively inserted into the inner cavity of the second limiting groove 3, the second clamping rod 8 is slidably sleeved on the outer wall of the first guide rod 4, the rear side of the outer wall of the second clamping rod 8 is slidably and adaptively inserted into the inner cavity of the first driving groove 7 corresponding in position, the front end of the second clamping rod 8 is slidably extended out of the front side of the main frame 1, the two second clamping rods 8 are driven by the motor to move synchronously inward or outward, the bearing is accurately clamped or released, and the stability and positioning accuracy of the bearing in the detection process are ensured. The front end of the first rotating rod 9 is rotatably arranged on the left end of the front side of the inner cavity of the main frame 1 through a bearing, the rear end of the first rotating rod 9 is rotatably extended out of the rear side of the main frame 1, the first gear 10 is sleeved on the outer wall of the first rotating rod 9 and is locked by a jackscrew, the first gear 10 is engaged with the first driving disc 6, the first motor 12 is screw-connected to the left end of the rear side of the main frame 1, the rear end of the first rotating rod 9 is locked on the output end of the first motor 12 through a shaft coupling, the first motor 12 is prior art, the first motor 12 is a servo motor, and here, no more description is made. The first motor 12 is used to drive the first driving disc 6 to rotate. The rotating speed detection mechanism is arranged on the main frame 1. The railway bearing 23 is placed on the front side of the main frame 1.

[0038] As Figure 4 , Figure 5 , Figure 9 and Figure 10As shown, as a preferred solution, further, the rotating speed detecting mechanism comprises: the second driving disc 13, the second driving slot 14, the first sliding slot 15, the first clamping rod 16, the clamping piece 17, the encoder 18, the second rotating rod 19, the second gear 20, the second motor 21 and the third motor 22, the second driving disc 13 is rotatably sleeved on the rear part of the outer wall of the detecting mechanism 5 through a bearing, the second driving disc 13 is located in the inner cavity of the main frame 1, the upper and lower ends of the front side of the second driving disc 13 are both arc-shaped and provided with the second driving slot 14 penetrating through the front and back, the left end of the front side of the second driving disc 13 is arc-shaped and provided with the first sliding slot 15 penetrating through the front and back, the outer wall of the middle part of the first rotating rod 9 is slidably and adaptively inserted into the inner cavity of the first sliding slot 15, the second driving disc 13 is a key component for power transmission, which drives the movement of the first clamping rod 16 by rotating, so as to realize the automatic clamping and releasing of the railway bearing 23 to be detected, and improve the detection efficiency, the number of the first clamping rod 16 is two, the outer walls of the middle parts of the two first clamping rods 16 are respectively slidably and rotatably adaptively inserted into the inner cavities of the two first limiting slots 2, the outer wall of the rear part of the first clamping rod 16 is slidably and adaptively inserted into the inner cavity of the second driving slot 14 corresponding to its position, the front end of the first clamping rod 16 extends out of the front side of the main frame 1, the two first clamping rods 16 move synchronously inward or outward under the driving of the motor, accurately clamp or release the bearing, and ensure the stability and positioning accuracy of the bearing in the detection process, the number of the clamping piece 17 is four, the four clamping pieces 17 are respectively arranged on the front and back sides of the outer walls of the two first clamping rods 16, the four clamping pieces 17 all contact with the main frame 1, the clamping piece 17 is used for positioning the first clamping rod 16 and ensuring the stability of the movement of the first clamping rod 16, the encoder 18 is arranged on the rear side of the inner cavity of the main frame 1, the rear end of the upper first clamping rod 16 is connected with the encoder 18, the encoder 18 is a prior art, which will not be described here, the encoder 18 can record the rotating speed and the number of turns of the outer ring of the bearing in real time, and provide accurate data for evaluating the rotating smoothness of the bearing, the front end of the second rotating rod 19 is rotatably arranged on the front side of the inner cavity of the main frame 1 through a bearing, the rear end of the second rotating rod 19 rotatably extends out of the rear side of the main frame 1, the second gear 20 is sleeved on the outer wall of the second rotating rod 19 and locked by a top screw, the second gear 20 is engaged with the second driving disc 13, the second motor 21 is screw-connected to the rear right end of the main frame 1, the rear end of the second rotating rod 19 is locked on the output end of the second motor 21 through a shaft coupling, the second motor 21 is a servo motor, which will not be described here, the second motor 21 is used here to drive the second driving disc 13 to rotate, the third motor 22 is screw-connected to the rear middle part of the main frame 1, the third motor 22 is a servo motor, which will not be described here, the third motor 22 is used here to drive the first connecting rod 51 to rotate, the number of the torque sensor 11 is two, the two torque sensors 11 are respectively arranged on the rear sides of the first rotating rod 9 and the second rotating rod 19, the torque sensor 11 is a prior art, which will not be described here,The torque sensor 11 can monitor the torque change in real time when the motor rotates, and the motor rotation is automatically stopped when the clamping rod contacts the bearing and reaches the appropriate clamping force, preventing bearing damage that may be caused by excessive clamping. The number of rubber rollers 24 is four, and the four rubber rollers 24 are respectively fixedly sleeved on the outer wall front side of the two second clamping rods 8 and the first clamping rod 16. The rubber roller 24 can increase the contact area and friction with the bearing, ensuring the stability of clamping, and avoiding the damage to the bearing surface that may be caused by hard contact.

[0039] As Figure 6 , Figure 7 , Figure 8 , Figure 11 and Figure 12As shown, as a preferred solution, further, the detection mechanism 5 comprises: a first connecting rod 51, a second sliding groove 52, an adjusting assembly, a first lifting cylinder 57, a second connecting rod 59, a second guide rod 510, a second electric telescopic rod 511, a driving block 512, a conversion assembly, a sleeve 515, a second lifting cylinder 516, a detection assembly and a driving assembly, the middle part of the outer wall of the first connecting rod 51 is rotatably arranged on the front middle part of the main frame 1 through a bearing, the rear end of the first connecting rod 51 penetrates the inner cavity of the main frame 1 and is rotatably extended out of the rear side of the main frame 1, the first driving disc 6 and the second driving disc 13 are rotatably sleeved on the outer wall of the first connecting rod 51 through bearings, the rear end of the first connecting rod 51 is locked on the output end of the third motor 22 through a shaft coupling, the left and right sides of the inner cavity of the first connecting rod 51 are provided with second sliding grooves 52 in the front-rear direction, the front end of the first connecting rod 51 penetrates the inner cavity of the railway bearing 23, the adjusting assembly is arranged in the inner cavity of the first connecting rod 51, the adjusting assembly is used for adjusting the position of the first lifting cylinder 57, the first lifting cylinder 57 is slidably and adaptively inserted into the inner cavity of the adjusting assembly, the upper and lower ends of the first lifting cylinder 57 are slidably and adaptively extended out of the upper and lower sides of the first connecting rod 51 respectively, the first lifting cylinder 57 is located in front of the front end of the second clamping rod 8, and the vertical position thereof is controlled through the adjusting assembly, so that the probe 518 can accurately contact the inner wall of the bearing, the inner diameter roundness and size measurement are realized, one end of the second connecting rod 59 is arranged on the front end of the first connecting rod 51, the number of the second guide rods 510 is two, the left and right ends of the two second guide rods 510 are arranged on the inner cavity of the second connecting rod 59 left and right sides front and rear ends, the second electric telescopic rod 511 is arranged in the inner cavity of the second connecting rod 59, the second electric telescopic rod 511 is a prior art, which will not be described here, the second electric telescopic rod 511 drives the driving block 512 to move horizontally along the second guide rod 510 through telescopic movement, thereby driving the second lifting cylinder 516 and the outer diameter detection probe 518 to approach or away from the outer wall of the bearing, realizing the outer diameter roundness and size measurement, the driving block 512 is slidably and adaptively inserted into the inner cavity of the second connecting rod 59, the driving block 512 is slidably sleeved on the outer wall of the second guide rod 510, the right end of the second electric telescopic rod 511 is arranged on the left side of the driving block 512, the conversion assembly is arranged in the inner cavity of the driving block 512, the sleeve 515 is rotatably arranged on the middle part of the rear side of the driving block 512 through a bearing, the conversion assembly can drive the sleeve 515 to rotate, the sleeve 515 is used for mounting the second lifting cylinder 516, the second lifting cylinder 516 is inserted into the inner cavity of the sleeve 515, the right end of the second lifting cylinder 516 is provided with a pressing cavity 523, the second lifting cylinder 516 is located in front of the front end of the first clamping rod 16, the second lifting cylinder 516 can be driven to move horizontally and rotate through the driving block 512 and the sleeve 515, so that the probe can slide along the outer wall of the bearing for detection, the detection assembly is arranged in the inner cavities of the first lifting cylinder 57 and the second lifting cylinder 516, and the detection assembly is used for realizing accurate measurement of the roundness and size of the bearing.The driving assembly is arranged in the inner cavity of the extrusion cavity 523.

[0040] As shown in Figure 7 More specifically, the conversion assembly comprises a fourth motor 513 and a third rotating rod 514. The fourth motor 513 is screw-connected to the inner cavity of the driving block 512. The fourth motor 513 is a prior art, and thus will not be described herein. The fourth motor 513 is a servo motor. The fourth motor 513 can drive the sleeve 515 to rotate through the third rotating rod 514. One end of the third rotating rod 514 is locked to the output end of the fourth motor 513 through a shaft coupling. The other end of the third rotating rod 514 is arranged on the outer wall of the sleeve 515.

[0041] As shown in Figure 6 and Figure 11 More specifically, the adjustment assembly comprises a first electric telescopic rod 53, a driving frame 54, a sliding block 55, and a driving column 58. The first electric telescopic rod 53 is arranged at the rear side of the inner cavity of the first connecting rod 51. The first electric telescopic rod 53 is a prior art, and thus will not be described herein. The first electric telescopic rod 53 can drive the driving frame 54 to move axially by precisely controlling the telescopic amount. The driving frame 54 is slidably and adaptively inserted into the inner cavity of the first connecting rod 51. The front end of the first electric telescopic rod 53 is arranged at the rear side of the driving frame 54. The left and right sides of the driving frame 54 are both provided with third driving grooves 56 which are in communication with the inner cavity of the driving frame 54 in the inclined direction. A first lifting cylinder 57 is slidably and adaptively inserted into the inner cavity of the driving frame 54. The number of the sliding blocks 55 is four. The four sliding blocks 55 are respectively arranged at the front and rear ends of the left and right sides of the driving frame 54. The four sliding blocks 55 are respectively slidably and adaptively inserted into the inner cavities of the two second sliding grooves 52. The cooperation between the sliding blocks 55 and the second sliding grooves 52 can ensure the stability of the movement of the driving frame 54. The number of the driving columns 58 is two. The two driving columns 58 are respectively arranged at the left and right sides of the middle part of the outer wall of the first lifting cylinder 57. The two driving columns 58 are respectively slidably and adaptively inserted into the inner cavities of the two third driving grooves 56. When the driving frame 54 slides forward and backward, the cooperation between the driving columns 58 and the third driving grooves 56 can drive the first lifting cylinder 57 to slide up and down.

[0042] As shown in Figure 8As shown, more specifically, the detection assembly includes: a trigger assembly, a probe 518, a ball 519, a spring 520 and a magnetostrictive displacement sensor 522, the number of trigger assemblies is two, two trigger assemblies are arranged in the middle of the inner cavity of the first lifting cylinder 57 and the second lifting cylinder 516 respectively, the number of probes 518 is two, two probes 518 are respectively and slidably inserted into the inner cavities of the first lifting cylinder 57 and the second lifting cylinder 516, the outer ends of the two probes 518 are respectively and slidably extended out of the inner cavities of the first lifting cylinder 57 and the second lifting cylinder 516, the probe 518 generates axial displacement by external force, and converts the geometric change of the bearing surface profile into a linear displacement signal, the ball 519 is rollably embedded in the outer end of the probe 518, the ball 519 converts the sliding friction between the probe 518 and the bearing surface into rolling friction, significantly reduces the contact resistance, reduces energy loss and heat generation during measurement, at the same time, the rolling characteristics of the ball 519 ensure that the probe 518 can smoothly follow the change of the bearing surface profile, avoiding measurement distortion caused by friction jamming, the number of springs 520 is two, two springs 520 are respectively sleeved on the outer walls of the two probes 518, one end of each of the two springs 520 is clamped on the outer wall of each of the two probes 518, and the other end of each of the two springs 520 is clamped on the inner wall of the first lifting cylinder 57 and the second lifting cylinder 516, the spring 520 is a rotary spring, which is elastically deformed after being extruded or stretched by external force, and returns to the initial state after the external force is removed, when the probe 518 is moved inwardly due to extrusion by the bearing surface, the spring 520 is compressed and stores elastic potential energy, when the external force disappears, the spring 520 releases the potential energy to push the probe 518 back to the original position, this mechanism ensures that the probe 518 remains in the initial position in the non-measurement state, and provides stable pre-tightening force for the measurement process, preventing the probe from generating false displacement due to vibration or inertia, the number of magnetostrictive displacement sensors 522 is two, two magnetostrictive displacement sensors 522 are arranged inside the inner cavities of the first lifting cylinder 57 and the second lifting cylinder 516 respectively, the outer end of the magnetostrictive displacement sensor 522 is arranged at the inner end of the probe 518, the magnetostrictive displacement sensor 522 is a prior art, which will not be described here, the magnetostrictive displacement sensor 522 can convert the linear displacement of the probe 518 into an electrical signal, realizing nanoscale resolution displacement measurement, and the sensor data is directly used to calculate the roundness error and radius extreme value of the bearing inner and outer diameters, providing high-precision data support for quantitative evaluation of bearing geometric precision;

[0043] As Figure 12As shown more specifically, the trigger assembly includes: a first contact 517 and a second contact 521, the first contact 517 is two in number, and the two first contacts 517 are respectively arranged in the middle of the inner cavities of the first lifting cylinder 57 and the second lifting cylinder 516, the second contact 521 is two in number, and the two second contacts 521 are respectively arranged on the outer walls of the two probes 518, the first contact 517 and the second contact 521 are in contact, the two second contacts 521 are respectively electrically connected with the first electric telescopic rod 53 and the second electric telescopic rod 511, when the probe 518 is displaced due to contact with the inner and outer walls of the bearing, the second contact 521 is separated from the first contact 517, the trigger signal is disconnected, and the driving of the electric telescopic rod is immediately stopped, so as to realize the precise control of the displacement of the probe 518.

[0044] As shown in the Figure 13 As shown more specifically, the driving assembly includes: a pressure sensor 524, a pressure rod 525 and a rubber head 526, the pressure sensor 524 is arranged on the inner side of the inner cavity of the extrusion cavity 523, the pressure sensor 524 is a prior art, which will not be described here, the pressure sensor 524 is used to monitor the reaction force generated when the rubber head 526 contacts the outer wall of the bearing in real time, and convert the pressure signal into an electrical signal output, the pressure rod 525 is slidably inserted into the inner cavity of the extrusion cavity 523, the outer end of the pressure rod 525 can be slidably extended out of the inner cavity of the extrusion cavity 523, the pressure rod 525 serves as a force transmission medium, and transmits the contact force between the rubber head 526 and the surface of the bearing to the pressure sensor 524 without loss, and the rubber head 526 is arranged on the outer end of the pressure rod 525, and the rubber head 526 can increase the friction between the rubber head 526 and the outer wall of the bearing.

[0045] The detailed connection means is a known technology in the art, and the working principle and process are mainly described below. The specific work is as follows.

[0046] Step one, in use, the railway bearing 23 is overlapped on the outer wall of the rubber roller 24 below, and the first motor 12 and the second motor 21 are started, the output end rotation of the first motor 12 can drive the first gear 10 to rotate through the first rotating rod 9 and the torque sensor 11, the rotation of the first gear 10 can promote the rotation of the first driving disc 6, the rotation of the first driving disc 6 can drive the first driving groove 7 to rotate, so that the cooperation between the rotating first driving groove 7 and the second limiting groove 3 can promote the synchronous movement of the two second clamping rods 8 to the inside, until the rubber roller 24 on the outer wall of the second clamping rod 8 contacts with the railway bearing 23, so that the movement of the second clamping rod 8 can be blocked by the outer wall of the railway bearing 23, so that the torque sensor 11 connected with the first rotating rod 9 can detect the torque of the first rotating rod 9, until the torque of the first rotating rod 9 reaches a suitable value, the first motor 12 is turned off, and the two second clamping rods 8 can clamp and fix the railway bearing 23, the output end rotation of the second motor 21 can drive the second gear 20 to rotate through the second rotating rod 19 and the torque sensor 11, the rotation of the second gear 20 can promote the rotation of the second driving disc 13, the rotation of the second driving disc 13 can drive the second driving groove 14 and the first sliding groove 15 to rotate, so that the cooperation between the rotating second driving groove 14 and the first limiting groove 2 can promote the synchronous movement of the two first clamping rods 16 to the inside, until the rubber roller 24 on the outer wall of the first clamping rod 16 contacts with the railway bearing 23, so that the movement of the first clamping rod 16 can be blocked by the outer wall of the railway bearing 23, so that the torque sensor 11 connected with the second rotating rod 19 can detect the torque of the second rotating rod 19, until the torque of the second rotating rod 19 reaches a suitable value, the second motor 21 is turned off, and the two first clamping rods 16 can clamp and fix the railway bearing 23, so that the cooperation between the two first clamping rods 16 and the two second clamping rods 8 can ensure the stability of clamping and fixing the railway bearing 23, and can ensure that the center of the railway bearing 23 is the same as the center of the first connecting rod 51, when the first sliding groove 15 is driven by the second driving disc 13 to rotate, the outer wall of the first rotating rod 9 can slide along the inner cavity of the first sliding groove 15;

[0047] Step two, start the first electric telescopic rod 53, using the first electric telescopic rod 53 to push the drive frame 54 to move forward, and then when the drive frame 54 moves forward, the first lifting cylinder 57 can be used to drive the probe 518 in the inner cavity to move upward by the cooperation between the third drive slot 56 and the drive column 58, until the top of the probe 518 in the inner cavity of the first lifting cylinder 57 contacts with the inner wall of the railway bearing 23, the first electric telescopic rod 53 continues to push the drive frame 54 to move forward, so that under the shelter of the inner wall of the railway bearing 23, it will push the probe 518 to move to the inner cavity of the first lifting cylinder 57, and extrude the spring 520 to be elastically deformed, with the movement of the probe 518, until the second contact 521 on the outer wall of the probe 518 and the first contact 517 on the inner wall of the first lifting cylinder 57 are separated, at this time, the first electric telescopic rod 53 is closed, the second electric telescopic rod 511 is started, the second electric telescopic rod 511 is used to pull the drive block 512 to drive the second lifting cylinder 516 to move to the left side through the sleeve 515, until the probe 518 in the inner cavity of the second lifting cylinder 516 contacts with the outer wall of the railway bearing 23, the second lifting cylinder 516 continues to move to the left side, so that under the shelter of the outer wall of the railway bearing 23, it will push the probe 518 to move to the inner cavity of the second lifting cylinder 516, and extrude the spring 520 to be elastically deformed, with the movement of the probe 518, until the second contact 521 on the outer wall of the probe 518 and the first contact 517 on the inner wall of the second lifting cylinder 516 are separated, at this time, the second electric telescopic rod 511 is closed;

[0048] Step three, when detecting, start the third motor 22, use the output end of the third motor 22 to drive the first connecting rod 51 to rotate slowly, so that the first connecting rod 51 rotates can drive the first lifting cylinder 57 and the second lifting cylinder 516 to rotate around the first connecting rod 51 as the center, the first lifting cylinder 57 rotates around the first connecting rod 51 as the center can promote the probe 518 in its inner cavity to slide along the inner wall of the railway bearing 23, and the ball 519 can reduce the friction between the probe 518 and the railway bearing 23, the second lifting cylinder 516 rotates around the first connecting rod 51 as the center can promote the probe 518 in its inner cavity to slide along the outer wall of the railway bearing 23, in the process of the two probes 518 sliding circumferentially, if the outer wall or the inner wall of the railway bearing 23 is an irregular circle, the inner wall or the outer wall can extrude the probe 518 to continue to move to the inner cavity of the first lifting cylinder 57 or the second lifting cylinder 516, or under the elastic force of the spring 520, the probe 518 can be pushed to move outward, so that the magnetostrictive displacement sensor 522 can detect the moving distance of the probe 518, and then the roundness of the inner diameter and the outer diameter of the railway bearing 23 can be judged, at the same time, when the first lifting cylinder 57 and the second lifting cylinder 516 rotate one circle, the third motor 22 is closed, according to the cooperation between the moving distance of the driving frame 54 pushed by the first electric telescopic rod 53 and the moving distance of the probe 518 connected with the magnetostrictive displacement sensor 522 in the inner cavity of the first lifting cylinder 57, the maximum radius and the minimum radius of the inner wall of the railway bearing 23 can be judged, and according to the cooperation between the moving distance of the driving block 512 pulled by the second electric telescopic rod 511 and the moving distance of the probe 518 connected with the magnetostrictive displacement sensor 522 in the inner cavity of the second lifting cylinder 516, the maximum radius and the minimum radius of the outer wall of the railway bearing 23 can be judged;

[0049] Step four, after the inner and outer diameter roundness and length of the railway bearing 23 are qualified, the second electric telescopic rod 511 is started, the second electric telescopic rod 511 pushes the driving block 512 to drive the second lifting cylinder 516 to move to the right side, until the second lifting cylinder 516 moves to the appropriate distance, the fourth motor 513 is started, the fourth motor 513 drives the sleeve 515 to rotate 180 degrees through the third rotating rod 514, and then the second lifting cylinder 516 can be driven to rotate 180 degrees, the second electric telescopic rod 511 pulls the driving block 512 to move the second lifting cylinder 516 to the left side, until the rubber head 526 contacts the outer wall of the railway bearing 23, the squeezing force between the rubber head 526 and the outer wall of the railway bearing 23 can be detected by the pressure sensor 524, until the appropriate squeezing force is reached, the second electric telescopic rod 511 is closed, the third motor 22 is started, the first connecting rod 51 is driven to rotate rapidly by the third motor 22, so that the first connecting rod 51 can drive the second lifting cylinder 516 to rotate rapidly through the second connecting rod 59 and the sleeve 515, since the inner ring of the railway bearing 23 can be fixed by the rubber roller 24 on the outer wall of the second clamping rod 8, the rotation is placed, so that when the second lifting cylinder 516 rotates rapidly with the first connecting rod 51, the outer ring of the railway bearing 23 can be driven to rotate synchronously with the second lifting cylinder 516 by the friction between the rubber head 526 and the outer ring of the railway bearing 23, after a certain number of rotations, the second electric telescopic rod 511 pushes the driving block 512 to drive the second lifting cylinder 516 to move to the right side, until the second lifting cylinder 516 and the outer diameter of the railway bearing 23 are separated, at this time, since the outer diameter of the railway bearing 23 rotates, the first clamping rod 16 above can be driven to rotate by the friction between the rubber roller 24 on the outer wall of the first clamping rod 16 above and the outer wall of the railway bearing 23, the rotation speed and rotation time of the first clamping rod 16 can be detected by the encoder 18, so that the rotation speed and rotation time of the outer ring of the railway bearing can be judged, and the smoothness of the rotation of the railway bearing can be detected.

[0050] The device can complete the comprehensive detection of the roundness, radius extreme value and rotation smoothness of the inner and outer diameters of the bearing by clamping once, significantly improving the detection efficiency, and the combination of the magnetostrictive displacement sensor and the encoder makes the detection accuracy reach the micron level, effectively reduces the missed detection rate and the misjudgment rate, and provides a more comprehensive solution for the quality control of railway bearings, thereby ensuring the safety and stability of train operation.

[0051] Although embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the inner and outer diameters of railway bearings, characterized in that, include: The main frame (1) has a first limiting groove (2) that communicates with its inner cavity at both the upper and lower ends of the front side along the vertical direction, and a second limiting groove (3) that communicates with its inner cavity at both the left and right ends of the front side. The first guide rod (4) has its left and right ends respectively located on the left and right sides of the inner cavity of the second limiting groove (3); The testing mechanism (5) is located at the front center of the main frame (1); The first drive disk (6) is rotatably sleeved on the middle of the outer wall of the detection mechanism (5) via a bearing. The first drive disk (6) is located in the inner cavity of the main frame (1). The first drive disk (6) has a first drive groove (7) that runs through the front left and right ends along an arc. The second clamping rod (8) is slidably fitted into the inner cavity of the second limiting groove (3) at the middle of its outer wall. The second clamping rod (8) is slidably sleeved on the outer wall of the first guide rod (4). The rear side of the outer wall of the second clamping rod (8) is slidably fitted into the inner cavity of the first driving groove (7) corresponding to its position. The front end of the second clamping rod (8) extends slidably out of the front side of the main frame (1). The first rotating rod (9) has its front end rotatably mounted on the left side of the inner cavity of the main frame (1) via a bearing, and its rear end rotatably extends out of the rear side of the main frame (1). The first gear (10) is sleeved on the outer wall of the first rotating rod (9) and locked by a set screw. The first gear (10) meshes with the first drive disc (6). The first motor (12) is screwed to the rear left end of the main frame (1), and the rear end of the first rotating rod (9) is locked to the output end of the first motor (12) by a coupling. A rotational speed detection mechanism is mounted on the main frame (1); Railway bearing (23) is placed on the front side of the main frame (1).

2. The railway bearing inner and outer diameter detection device according to claim 1, characterized in that, The rotation speed detection mechanism includes: The second drive disk (13) is rotatably sleeved on the rear part of the outer wall of the detection mechanism (5) via a bearing. The second drive disk (13) is located in the inner cavity of the main frame (1). The upper and lower ends of the front side of the second drive disk (13) are provided with a second drive groove (14) that runs through the front and back along an arc. The left end of the front side of the second drive disk (13) is provided with a first sliding groove (15) that runs through the front and back along an arc. The middle part of the outer wall of the first rotating rod (9) is slidably fitted into the inner cavity of the first sliding groove (15). The first clamping rod (16) has two parts. The middle part of the outer wall of the two first clamping rods (16) is slidably and rotatably adapted to be inserted into the inner cavity of the two first limiting grooves (2). The rear side of the outer wall of the first clamping rod (16) is slidably adapted to be inserted into the inner cavity of the second driving groove (14) corresponding to its position. The front end of the first clamping rod (16) extends out of the front side of the main frame (1). Clamping pieces (17), the number of clamping pieces (17) is four, the four clamping pieces (17) are respectively disposed on the front and rear sides of the outer wall of the two first clamping rods (16), and the four clamping pieces (17) are in contact with the main frame (1); The encoder (18) is located on the rear side of the inner cavity of the main frame (1), and the rear end of the first clamping rod (16) located above is connected to the encoder (18). The front end of the second rotating rod (19) is rotatably disposed on the right side of the front cavity of the main frame (1) via a bearing, and the rear end of the second rotating rod (19) extends rotatably out of the rear side of the main frame (1). The second gear (20) is sleeved on the outer wall of the second rotating rod (19) and locked by a set screw. The second gear (20) meshes with the second drive disk (13). The second motor (21) is screwed to the rear right end of the main frame (1), and the rear end of the second rotating rod (19) is locked to the output end of the second motor (21) by a coupling; The third motor (22) is screwed to the middle of the rear side of the main frame (1).

3. The railway bearing inner and outer diameter detection device according to claim 2, characterized in that, Torque sensors (11) are provided on the rear side of both the first rotating rod (9) and the second rotating rod (19).

4. The railway bearing inner and outer diameter detection device according to claim 3, characterized in that, The testing organization (5) includes: The first connecting rod (51) is rotatably mounted on the front middle of the main frame (1) via a bearing in the middle of the outer wall of the first connecting rod (51). The rear end of the first connecting rod (51) passes through the inner cavity of the main frame (1) and extends rotatably out of the rear side of the main frame (1). The first drive disk (6) and the second drive disk (13) are rotatably sleeved on the outer wall of the first connecting rod (51) via a bearing. The rear end of the first connecting rod (51) is locked to the output end of the third motor (22) via a coupling. The left and right sides of the inner cavity of the first connecting rod (51) are provided with second sliding grooves (52) in the front and rear directions. The front end of the first connecting rod (51) passes through the inner cavity of the railway bearing (23). An adjustment assembly is disposed within the cavity of the first connecting rod (51); The first lifting cylinder (57) is slidably adapted to be inserted into the inner cavity of the adjusting component, and the upper and lower ends of the first lifting cylinder (57) are respectively slidably adapted to extend out the upper and lower sides of the first connecting rod (51). The second connecting rod (59) has one end located at the front end of the first connecting rod (51); The second guide rod (510) has two ends, and the left and right ends of the two second guide rods (510) are respectively located at the front and rear ends of the left and right sides of the inner cavity of the second connecting rod (59); The second electric telescopic rod (511) is disposed in the inner cavity of the second connecting rod (59); A drive block (512) is slidably and compatiblely inserted into the inner cavity of the second connecting rod (59). The drive block (512) is slidably sleeved on the outer wall of the second guide rod (510). The right end of the second electric telescopic rod (511) is located on the left side of the drive block (512). A conversion component is disposed within the cavity of the drive block (512); A sleeve (515) is rotatably disposed in the middle of the rear side of the drive block (512) via a bearing, and the conversion assembly can drive the sleeve (515) to rotate. The second lifting cylinder (516) is inserted into the inner cavity of the sleeve (515), and the right end of the second lifting cylinder (516) is provided with a compression chamber (523).

5. The railway bearing inner and outer diameter detection device according to claim 4, characterized in that, The testing organization (5) also includes: A detection component is disposed in the inner cavity of the first lifting cylinder (57) and the second lifting cylinder (516); A drive assembly disposed within the cavity of the extrusion chamber (523).

6. The railway bearing inner and outer diameter detection device according to claim 5, characterized in that, The adjustment component includes: The first electric telescopic rod (53) is located on the rear side of the inner cavity of the first connecting rod (51); The drive frame (54) is slidably and compatiblely inserted into the inner cavity of the first connecting rod (51). The front end of the first electric telescopic rod (53) is located on the rear side of the drive frame (54). The left and right sides of the drive frame (54) are provided with a third drive groove (56) communicating with its inner cavity along the inclined direction. The first lifting cylinder (57) is slidably and compatiblely inserted into the inner cavity of the drive frame (54). The slider (55) has four sliders, which are respectively located on the left and right sides and the front and rear ends of the drive frame (54). The four sliders (55) are slidably and compatiblely inserted into the inner cavity of the two second slide grooves (52). The number of drive columns (58) is two. The two drive columns (58) are respectively located on the left and right sides of the middle of the outer wall of the first lifting cylinder (57). The two drive columns (58) are slidably adapted to be inserted into the inner cavity of the two third drive slots (56).

7. A railway bearing inner and outer diameter detection device according to claim 6, characterized in that, The detection component includes: The triggering components are of two types, and the two triggering components are respectively disposed in the middle of the inner cavity of the first lifting cylinder (57) and the second lifting cylinder (516); The probe (518) is two in number. The two probes (518) are slidably fitted into the inner cavities of the first lifting cylinder (57) and the second lifting cylinder (516), respectively. The outer ends of the two probes (518) are slidably extended out of the inner cavities of the first lifting cylinder (57) and the second lifting cylinder (516), respectively. A ball (519) is rotatably embedded in the outer end of the probe (518); Spring (520), there are two springs (520), the two springs (520) are respectively sleeved on the outer wall of the two probes (518), one end of the two springs (520) is respectively clamped on the outer wall of the two probes (518), and the other end of the two springs (520) is respectively clamped on the inner wall of the first lifting cylinder (57) and the second lifting cylinder (516); Magnetostrictive displacement sensor (522), there are two magnetostrictive displacement sensors (522), the two magnetostrictive displacement sensors (522) are respectively disposed inside the inner cavity of the first lifting cylinder (57) and the second lifting cylinder (516), and the outer end of the magnetostrictive displacement sensor (522) is disposed inside the probe (518).

8. A railway bearing inner and outer diameter testing device according to claim 7, characterized in that, The triggering component includes: The first contact (517) has two parts, and the two first contacts (517) are respectively disposed in the middle of the inner cavity of the first lifting cylinder (57) and the second lifting cylinder (516); The number of the second contacts (521) is 10. The two second contacts (521) are respectively disposed on the outer wall of the two probes (518). The first contact (517) and the second contact (521) are in contact. The two second contacts (521) are electrically connected to the first electric telescopic rod (53) and the second electric telescopic rod (511) respectively.

9. A railway bearing inner and outer diameter detection device according to claim 8, characterized in that, The driving component includes: Pressure sensor (524), the pressure sensor (524) is disposed inside the inner cavity of the extrusion chamber (523); A pressure rod (525) is slidably fitted into the inner cavity of the extrusion chamber (523), and the outer end of the pressure rod (525) extends slidably out of the inner cavity of the extrusion chamber (523). A rubber head (526) is disposed at the outer end of the pressure rod (525).

10. A railway bearing inner and outer diameter detection device according to claim 9, characterized in that, Rubber rollers (24) are fixedly sleeved on the front side of the outer wall of both the second clamping rod (8) and the first clamping rod (16).

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