Track detector with floating side arm

Abstract

The invention provides a track detector of a floating side arm. The track detector comprises a horizontal sensor arranged in the middle of a girder; the left-end wheel part is fixedly arranged at the left-end bottom of the crossbeam; one end of the first spring is fixedly connected to the middle body, and the other end of the first spring is connected to the girder; the gauge measuring head assembly is transversely and movably connected to the middle body, the two ends of the second spring are connected to the gauge measuring head seat and the middle body respectively, and the measuring end of the gauge sensor is arranged on the gauge measuring head seat; the vertical moving body is arranged on the middle body, and a rail-direction height gyroscope is fixedly arranged in the vertical moving body; the right end wheel part is arranged at the bottom of the middle body; the side arm is detachably connected to the vertical moving body; the side arm wheel parts are arranged at the two ends of the bottoms of the side arms respectively. The real gauge and the real level of the track can be accurately and directly measured, and the measuring posture of the real track direction and the height change can be accurately guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of measuring equipment, in particular to a rail detector with floating side arms. BACKGROUND

[0002] In order to ensure the safe operation of trains and subways, the railway department needs to be very strict in the detection of the track, and must ensure the safety of the track and the accuracy of the measurement. When measuring the track, a rail detector is used to monitor the real-time geometric parameters and conditions of the track.

[0003] In the prior art, the actual track gauge is measured by the left track guide wheel on the left side and the middle track guide wheel on the right side, and the moving distances of the two sensors are measured respectively, and then a track gauge data output is fitted through an algorithm. The horizontal sensor is installed in the middle of the girder, and the horizontal angle measured by the horizontal sensor is the angle between the plane formed by the left track guide top wheel, the front track guide top wheel and the rear track guide top wheel and the absolute horizontal plane. The horizontal angle is then converted into the horizontal angle of the middle track gauge measurement point through an algorithm, which results in multiple fitting and conversion of the measured value and the required value, and thus a large error in the measurement is caused. SUMMARY

[0004] Therefore, the present application aims to provide a rail detector with floating side arms to solve the above problems in the prior art.

[0005] The present application provides a rail detector with floating side arms, which comprises:

[0006] a girder, wherein a horizontal sensor is arranged in the middle of the girder;

[0007] a left end wheel component, which is fixedly arranged at the bottom of the left end of the girder and in contact with the left rail to roll and move forward for track measurement;

[0008] a middle body, which is laterally movably connected to the right end of the girder through a lateral first movable connecting assembly, wherein a first spring is arranged between the girder and the middle body, one end of the first spring is fixedly connected to one side of the middle body, and the other end of the first spring is connected to the inner wall of the girder;

[0009] a track gauge measuring head assembly, which is laterally movably connected to the middle body through a lateral second movable connecting assembly, wherein the lateral second movable connecting assembly comprises two second springs and a track gauge measuring head seat, both ends of the two second springs are respectively connected to the track gauge measuring head seat and the middle body, a track gauge sensor is arranged between the track gauge measuring head assembly and the girder, and the measuring end of the track gauge sensor is arranged on the track gauge measuring head seat;

[0010] a vertical movable body, which is longitudinally movably arranged on the middle body through a longitudinal guide shaft device, and a track direction height gyroscope is fixedly arranged in the vertical movable body.

[0011] Right end wheel component, arranged at the bottom of the intermediate body and in contact with the right rail for measurement;

[0012] Side arm, detachably connected to the vertical movable body and arranged perpendicularly to the girder, and in the horizontal plane, the side arm and the girder form a T-shaped structure;

[0013] Side arm wheel component, arranged at the bottom of the side arm respectively, in contact with the right rail for measurement;

[0014] Wherein, the left end of the girder rolls along the surface of the left rail through the left end wheel component, and rolls along the surface of the right rail through the right end wheel component, and the side arm moves on the right rail through the side arm wheel component; the side arm is floatingly coupled to the right end of the girder through the intermediate body and the vertical movable body, so that the side arm and the girder interact, maintain correct measurement postures respectively, and the track inclination and height gyroscope can accurately measure the track inclination and height data of the other side track at all times, the horizontal sensor can accurately measure the horizontal data of the track, and the gauge sensor can accurately measure the gauge data between the two tracks.

[0015] Compared with the prior art, the beneficial effects of the present application are that the intermediate body is connected to the right end of the girder through the transverse first movable connecting assembly, and the first spring is arranged between the girder and the intermediate body, the gauge head assembly is transversely movably connected to the intermediate body through the transverse second movable connecting assembly, so that the side arm is floatingly coupled to the right end of the girder through the intermediate body and the vertical movable body, so that the interaction between the side arm and the girder always maintains correct measurement postures respectively, thereby the track inclination and height gyroscope can accurately measure the track inclination and height data of the other side track at all times, and the horizontal sensor can accurately measure the horizontal data of the track, and the gauge sensor can more accurately measure the gauge data between the two tracks.

[0016] Further, the left end wheel component comprises a left track inclination positioning wheel and a left rail top positioning wheel, both of which are arranged at the bottom of the left end of the girder, the left track inclination positioning wheel is arranged on one side of the left rail top positioning wheel, the left track inclination positioning wheel is in contact with the inner side of the one side track, and the left rail top positioning wheel is in contact with the top surface of the one side track.

[0017] Further, the transverse first movable connecting assembly comprises four slide rests and two guide rails, two of the four slide rests are arranged symmetrically in each group, and the two guide rails are arranged at the two ends of the intermediate body, each group of slide rests is movably arranged on the two guide rails, the right end of the girder is covered by the two guide rails, and the two guide rails are fixedly connected to the girder by screws.

[0018] Further, the side arm wheel component comprises a front rail positioning wheel, a rear rail positioning wheel, a front rail top positioning wheel and a rear rail top positioning wheel, the front rail positioning wheel and the rear rail positioning wheel are respectively connected at both ends of the side arm bottom, the front rail top positioning wheel and the rear rail top positioning wheel are respectively connected at both ends of the side arm bottom, the front rail positioning wheel is arranged at one side of the front rail top positioning wheel, and the rear rail positioning wheel is arranged at one side of the rear rail top positioning wheel, wherein the front rail positioning wheel and the rear rail positioning wheel are in contact with the inner side of one side rail, and the front rail positioning wheel and the rear rail positioning wheel are both rail measurement wheels.

[0019] Further, the front rail positioning wheel and the front rail top positioning wheel are fixedly installed on the bottom of the front end of the side arm through a front mounting portion, and the rear rail positioning wheel and the rear rail top positioning wheel are fixedly installed on the bottom of the rear end of the side arm through a rear mounting portion.

[0020] Further, the longitudinal guide shaft device comprises four shaft sleeves and four movement shafts, the four shaft sleeves are arranged in the middle body, the four movement shafts are respectively arranged in the four shaft sleeves, and the top and bottom of the movement shaft are fixed on the vertical movable body.

[0021] Further, the middle body is provided with a contact type height sensor, and the measurement end of the contact type height sensor is in contact with the vertical movable body.

[0022] Further, the right end wheel component comprises a middle rail top positioning wheel seat and a middle rail top positioning wheel, the middle rail top positioning wheel seat is arranged on the bottom of the middle body, and the middle rail top positioning wheel is arranged on the middle rail top positioning wheel seat.

[0023] Further, the middle body is provided with a contact type rail direction sensor, and the measurement end of the contact type rail direction sensor is in contact with the gauge head seat.

[0024] Further, the vertical movable body is provided with a top mounting surface and two side arm positioning pins, the rail direction height gyroscope and the two side arm positioning pins are arranged on the top mounting surface, the two side arm positioning pins are symmetrically arranged on both sides of the rail direction height gyroscope, and the side arm can be detachably installed on the top mounting surface of the vertical movable body through the side arm positioning pins. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional structure diagram of the rail detector of the floating side arm in the embodiment of the present application Figure One ;

[0026] Figure 2 It is a three-dimensional structure diagram of the rail detector of the floating side arm in the embodiment of the present applicationFigure Two ;

[0027] Figure 3 For Figure 2 enlarged view of the middle A;

[0028] Figure 4 For the track detector of the floating side arm in the embodiment of the application is the schematic diagram of the three-dimensional structure Figure Three ;

[0029] Figure 5 For Figure 4 enlarged view of the middle B;

[0030] Figure 6 For the track detector of the floating side arm in the embodiment of the application is the schematic diagram of the three-dimensional structure Figure Four ;

[0031] Figure 7 For the track detector of the floating side arm in the embodiment of the application is the schematic diagram of the three-dimensional structure Figure Five ;

[0032] Figure 8 For the track detector of the floating side arm in the embodiment of the application is the schematic diagram of the three-dimensional structure of the intermediate body and the vertical movable body Figure One ;

[0033] Figure 9 For Figure 8 in the schematic diagram of the section;

[0034] Figure 10 For Figure Nine in the schematic diagram of the section;

[0035] Figure 11 For the track detector of the floating side arm in the embodiment of the application is the schematic diagram of the three-dimensional structure of the intermediate body and the vertical movable body Figure Two ;

[0036] Figure 12 For the track detector of the floating side arm in the embodiment of the application is the schematic diagram of the three-dimensional structure of the intermediate body and the vertical movable body.

[0037] Main component symbol explanation:

[0038] 10, girder; 11, horizontal sensor; 12, track gauge sensor;

[0039] 20, left end wheel part; 21, left track orientation positioning wheel; 22, left rail top positioning wheel;

[0040] 30, intermediate body;

[0041] 40, transverse first movable connection assembly; 41, slide; 42, guide rail; 43, screw; 44, first spring;

[0042] 50, side arm;

[0043] 60, side arm wheel part; 61, front track positioning wheel; 62, rear track positioning wheel; 63, front track top positioning wheel; 64, rear track top positioning wheel; 65, front mounting part; 66, rear mounting part;

[0044] 70, vertical movable body; 71, track level gyroscope; 72, side arm positioning pin; 73, contact type track sensor; 74, top mounting surface;

[0045] 80, longitudinal guide shaft device; 81, shaft sleeve; 82, moving shaft; 83, contact type level sensor;

[0046] 90, right end wheel part; 91, middle track top positioning wheel seat; 92, middle track top positioning wheel;

[0047] 100, gauge head assembly; 110, transverse second movable connection assembly; 111, second spring; 112, gauge head seat.

[0048] The following detailed description will further describe the present application with reference to the above mentioned drawings. DETAILED DESCRIPTION

[0049] In order to facilitate the understanding of the present application, the following will make a more comprehensive description of the present application with reference to the relevant drawings. The drawings show several embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0050] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. As used herein the terms "vertical", "horizontal", "left", "right", and the like are used for explanation purposes only.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, such as left rail, right rail. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0052] Please refer to Figures 1 to 12The rail detector of the floating side arm in the embodiment of the application comprises a girder 10, a left end wheel part 20, an intermediate body 30, a side arm 50, a side arm wheel part 60, a vertical movable body 70, a right end wheel part 90 and a gauge measuring head assembly 100.

[0053] The horizontal sensor 11 is arranged in the middle of the girder 10, the left end wheel part 20 is fixedly arranged at the bottom of the left end of the girder 10 and rolls and travels in contact with the left rail to measure the track, the intermediate body 30 is transversely movably connected to the right end of the girder 10 through a transverse first movable connecting assembly 40, a first spring 44 is arranged between the girder 10 and the intermediate body 30, one end of the first spring 44 is fixedly connected to one side of the intermediate body 30, the other end of the first spring 44 is connected to the inner wall of the girder 10, the gauge measuring head assembly 100 is transversely movably connected to the intermediate body 30 through a transverse second movable connecting assembly 110, the transverse second movable connecting assembly 110 comprises two second springs 111 and a gauge measuring head seat 112, the two ends of the two second springs 111 are respectively connected to the gauge measuring head seat 112 and the intermediate body 30, a gauge sensor 12 is arranged between the gauge measuring head assembly 100 and the girder 10, the measuring end of the gauge sensor 12 is arranged on the gauge measuring head seat 112, the vertical movable body 70 is longitudinally movably arranged on the intermediate body 30 through a longitudinal guide shaft device 80, a track direction and height gyroscope 71 is fixedly arranged in the vertical movable body 70, the right end wheel part 90 is arranged at the bottom of the intermediate body 30 and measures in contact with the right rail, the side arm 50 is detachably connected to the vertical movable body 70 and is arranged perpendicularly to the girder 10, and in the horizontal plane, the side arm 50 and the girder 10 form a T-shaped structure, the side arm wheel parts 60 are respectively arranged at the two ends of the bottom of the side arm 50 and measure in contact with the right rail, wherein the left end of the girder 10 abuts against the left rail and rolls along the surface of the rail via the left end wheel part 20 and rolls along the surface of the rail via the right end wheel part 90; the side arm 50 moves on the right rail via the side arm wheel parts 60; the side arm 50 is floatingly coupled to the right end of the girder 10 through the intermediate body 30 and the vertical movable body 70, so that the side arm 50 and the girder 10 interact with each other, keep correct measurement postures respectively and enable the track direction and height gyroscope 71 to accurately measure the track direction and height data of the other side track all the time, the horizontal sensor 11 can accurately measure the horizontal data of the track and the gauge sensor 12 can accurately measure the gauge data between the two side tracks.

[0054] It can be understood that one end of the girder 10 can move on the left track through the left end wheel component 20, the other end of the girder 10 moves on the right track through the intermediate body 30, the vertical movable body 70 and the right end wheel component 90, the side arm 50 and the side arm wheel component 60 at the bottom of the side arm 50 move on the right track, and the intermediate body 30 is always located on the track due to the cooperation between the intermediate body 30 and the first spring 44 through the transverse first movable connection assembly 40 connected to one end of the girder 10, and it is worth noting that the first spring 44 is a tension spring, so that one end of the girder 10 is floatingly connected to the side arm 50 through the intermediate body 30 and the vertical movable body 70, so that the side arm 50 and the girder 10 interact to maintain their correct measurement postures, the second spring 111 can pull the track gauge probe base 112 to the inner side of the track, so that the track gauge probe base 112 can make the track gauge probe assembly 100 contact the inner side of the track, so that the track height gyroscope 71 can always accurately measure the track and height data of the other side of the track, the horizontal sensor 11 can accurately measure the horizontal data of the track, and the track gauge sensor 12 can accurately measure the track gauge data between the two tracks.

[0055] It is worth noting that the vertical movable body 70 is provided with a top mounting surface 74 and two side arm positioning pins 72, the track height gyroscope 71 and the two side arm positioning pins 72 are arranged on the top mounting surface 74, and the two side arm positioning pins 72 are symmetrically arranged on both sides of the track height gyroscope 71, and the side arm 50 is detachably mounted on the top mounting surface 74 of the vertical movable body 70 through the side arm positioning pins 72. When the side arm 50 is mounted on the vertical movable body 70, the side arm 50 can be more conveniently and quickly installed through the side arm positioning pins 72.

[0056] Further, in the embodiment, the intermediate body 30 is provided with a contact type track sensing sensor 73, and the measurement end of the contact type track sensing sensor 73 is in contact with the track gauge probe base 112. It can be understood that when the track gauge sensor 12 measures the track gauge, the contact type track sensing sensor 73 measures the data of the movement of the track gauge probe base 112 through the second spring 111, which can assist the track gauge data measured by the track gauge sensor 12, and effectively improve the measurement accuracy.

[0057] Specifically, in the embodiment, the left end wheel component 20 includes a left track positioning wheel 21 and a left rail top positioning wheel 22, both of which are arranged at the bottom of the left end of the girder 10, the left track positioning wheel 21 is arranged on one side of the left rail top positioning wheel 22, the left track positioning wheel 21 is in contact with the inner side of the track, and the left rail top positioning wheel 22 is in contact with the top surface of the track.

[0058] It can be understood that the left rail positioning wheel 21 is fixed at the bottom of the left end of the girder 10, the left rail positioning wheel 21 is in contact with the inner side of a side rail, and the left rail top positioning wheel 22 is in contact with the top surface of the side rail, so that one end of the girder 10 is stably moved on the side rail through the left rail positioning wheel 21 and the left rail top positioning wheel 22.

[0059] Specifically, in the embodiment, the transverse first movable connecting assembly 40 includes four slide rests 41 and two guide rails 42, two of the slide rests 41 are arranged in a group and symmetrically arranged at two ends of the intermediate body 30. Each group of the slide rests 41 is movably arranged on two guide rails 42, and the right end of the girder 10 is covered with two guide rails 42, and the two guide rails 42 are fixedly connected with the girder 10 through screws 43.

[0060] It can be understood that the bottom of one end of the girder 10 is a box structure, which is covered on the two guide rails 42, and then fixed with one end of the girder 10 through the screws 43 on the guide rails 42, so that the intermediate body 30 can slide on the slide rests 41 through the guide rails 42, realizing the effect of moving left and right.

[0061] Specifically, in the embodiment, the side arm wheel part 60 includes a front rail positioning wheel 61, a rear rail positioning wheel 62, a front rail top positioning wheel 63, and a rear rail top positioning wheel 64, the front rail positioning wheel 61 and the rear rail positioning wheel 62 are respectively connected at two ends of the bottom of the side arm 50, the front rail top positioning wheel 63 and the rear rail top positioning wheel 64 are respectively connected at two ends of the bottom of the side arm 50, the front rail positioning wheel 61 is arranged on one side of the front rail top positioning wheel 63, and the rear rail positioning wheel 62 is arranged on one side of the rear rail top positioning wheel 64, wherein the front rail positioning wheel 61 and the rear rail positioning wheel 62 are in contact with the inner side of a side rail, and the front rail positioning wheel 61 and the rear rail positioning wheel 62 are both rail positioning wheels.

[0062] It can be understood that the front rail top positioning wheel 63 and the rear rail top positioning wheel 64 are in contact with the top of the rail, and the front rail positioning wheel 61 and the rear rail positioning wheel 62 are in contact with the inner side of the rail, so that the side arm 50 can be more stably moved on the rail, and since the side arm 50 is detachably connected to the vertical movable body 70, the vertical movable body 70 is longitudinally movably arranged on the intermediate body 30 through the longitudinal guide shaft device 80, and the vertical movable body 70 is stably moved on the side rail through the right end wheel part 90, so that the side arm 50 can assist the vertical movable body 70 to be stably moved on the other side rail.

[0063] Further, in the embodiment, the front rail positioning wheel 61 and the front rail top positioning wheel 63 are fixedly installed on the bottom of the front end of the side arm 50 through the front mounting part 65, and the rear rail positioning wheel 62 and the rear rail top positioning wheel 64 are fixedly installed on the bottom of the rear end of the side arm through the rear mounting part 66. In this way, the side arm 50 can move more stably on the rail.

[0064] Specifically, in the embodiment, the longitudinal guide shaft device 80 includes four shaft sleeves 81 and four movement shafts 82. The four shaft sleeves 81 are arranged in the intermediate body 30, and the four movement shafts 82 are arranged in the four shaft sleeves 81 respectively. The top and bottom of the movement shaft 82 are fixed on the vertical movable body 70.

[0065] It can be understood that the vertical movable body 70 moves in the shaft sleeve 81 through the movement shaft 82 to move up and down on the intermediate body 30. When the rail is uneven, the right end wheel part 90 can drive the vertical movable body 70 to move up and down on the intermediate body 30 through the movement shaft 82 and the shaft sleeve 81, and under the action of gravity, the right end wheel part 90 always adheres to the upper surface of the rail.

[0066] Further, in the embodiment, the intermediate body 30 is provided with a contact type height sensor 83, and the measurement end of the contact type height sensor 83 is in contact with the vertical movable body 70. In this way, the up and down movement data of the vertical movable body 70 can be measured, and the height data measured by the contact type height sensor 83 can assist the height data measured by the rail height gyroscope 71, so that the height data of the rail can be measured more accurately.

[0067] Specifically, in the embodiment, the right end wheel part 90 includes a middle rail top positioning wheel seat 91 and a middle rail top positioning wheel 92. The middle rail top positioning wheel seat 91 is arranged on the bottom of the intermediate body 30, and the middle rail top positioning wheel 92 is arranged on the middle rail top positioning wheel seat 91.

[0068] It can be understood that since the middle rail top positioning wheel 92 is always in contact with the rail, when the rail is uneven, it can drive the vertical movable body 70 to rise and fall, and under the action of gravity, the middle rail top positioning wheel 92 can always adhere to the upper surface of the rail, so that the rail height gyroscope 71 can measure the height data of the rail more accurately.

[0069] In summary, the rail detector with the floating side arm in the above-mentioned embodiments of the present application, the intermediate body 30 is connected to the end of the girder 10 through the transverse first movable connecting assembly 40, and the first spring 44 is arranged between the girder 10 and the intermediate body 30, the gauge head assembly 100 is movably connected to the intermediate body 30 through the transverse second movable connecting assembly 110, so that the side arm 50 is movably connected to the right end of the girder 10 through the intermediate body 30 and the vertical movable body 70, so that the interaction between the side arm 50 and the girder 10 always maintains the correct measurement posture of each, thereby enabling the track level gyroscope 71 to always accurately measure the track level data of the other side track, and also enabling the horizontal sensor 11 to accurately measure the horizontal data of the track, and the gauge sensor 12 can more accurately measure the gauge data between the two tracks.

[0070] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A floating side arm rail detector characterized by, The utility model provides a track measuring device, including: The big beam middle part is equipped with horizontal sensor; The left end wheel part is fixed in the bottom of the left end of the big beam and rolls along the left rail to measure the track; The intermediate body is laterally movably connected to the right end of the big beam through a lateral first movable connecting assembly, a first spring is arranged between the big beam and the intermediate body, one end of the first spring is fixed to one side of the intermediate body, and the other end of the first spring is connected to the inner wall of the big beam; The gauge head assembly is movably connected to the intermediate body through a lateral second movable connecting assembly, the lateral second movable connecting assembly includes two second springs and a gauge head seat, the two ends of the two second springs are respectively connected to the gauge head seat and the intermediate body, a gauge sensor is arranged between the gauge head assembly and the big beam, and the measuring end of the gauge sensor is arranged on the gauge head seat; The vertical movable body is longitudinally movably arranged on the intermediate body through a longitudinal guide shaft device, and a track direction height gyroscope is fixed in the vertical movable body; The right end wheel part is arranged on the bottom of the intermediate body and contacts the right rail to measure the track; The side arm is detachably connected to the vertical movable body and is arranged perpendicularly to the big beam, and the side arm and the big beam form a T-shaped structure in the horizontal plane; The side arm wheel part is arranged at the bottom of the two ends of the side arm and contacts the right rail to measure the track; The left end of the big beam abuts against the left rail through the left end wheel part and rolls along the surface of the rail, and the right end of the big beam rolls along the surface of the right rail through the right end wheel part, the side arm moves on the right rail through the side arm wheel part, the side arm is floatingly connected to the right end of the big beam through the intermediate body and the vertical movable body, so that the side arm and the big beam interact, keep correct measurement postures, and make the track direction height gyroscope accurately measure the track direction and height data of the other side track, the horizontal sensor accurately measures the horizontal data of the track, and the gauge sensor accurately measures the gauge data between the two tracks.

2. The floating side arm rail detector of claim 1, wherein, The left end wheel part includes a left track direction positioning wheel and a left rail top positioning wheel, both of which are arranged at the bottom of the left end of the big beam, the left track direction positioning wheel is arranged on one side of the left rail top positioning wheel, the left track direction positioning wheel contacts the inner side of the one side track, and the left rail top positioning wheel contacts the top surface of the one side track.

3. The floating side arm rail detector of claim 1, wherein, The lateral first movable connecting assembly includes four slide rests and two guide rails, two of the four slide rests are arranged symmetrically in each group, the two guide rails are arranged at the two ends of the intermediate body, each group of slide rests is movably arranged on the two guide rails, the right end of the big beam covers the two guide rails, and the two guide rails are fixedly connected to the big beam through screws.

4. The floating side arm rail detector of claim 1, wherein, The side arm wheel part comprises a front track positioning wheel, a rear track positioning wheel, a front track top positioning wheel and a rear track top positioning wheel, the front track positioning wheel and the rear track positioning wheel are respectively connected at both ends of the bottom of the side arm, the front track top positioning wheel and the rear track top positioning wheel are respectively connected at both ends of the bottom of the side arm, the front track positioning wheel is arranged on one side of the front track top positioning wheel, and the rear track positioning wheel is arranged on one side of the rear track top positioning wheel, wherein the front track positioning wheel and the rear track positioning wheel are in contact with the inner side of the track, and the front track positioning wheel and the rear track positioning wheel are track measurement wheels.

5. The floating side arm rail detector of claim 4, wherein, The front track positioning wheel and the front track top positioning wheel are fixedly installed on the bottom of the front end of the side arm through a front mounting portion, and the rear track positioning wheel and the rear track top positioning wheel are fixedly installed on the bottom of the rear end of the side arm through a rear mounting portion.

6. The floating side arm rail detector of claim 1, wherein, The longitudinal guide shaft device comprises four shaft sleeves and four movement shafts, the four shaft sleeves are arranged in the middle body, and the four movement shafts are arranged in the four shaft sleeves, respectively.

7. The floating side arm rail inspection gauge of claim 1, wherein, The middle body is provided with a contact type height sensor, and a measurement end of the contact type height sensor is in contact with the vertical movable body.

8. The floating side arm rail detector of claim 1, wherein, The right end wheel part comprises a middle track top positioning wheel seat and a middle track top positioning wheel, the middle track top positioning wheel seat is arranged on the bottom of the middle body, and the middle track top positioning wheel is arranged on the middle track top positioning wheel seat.

9. The floating side arm rail detector of claim 1, wherein, The middle body is provided with a contact type track sensor, and a measurement end of the contact type track sensor is in contact with the track gauge probe seat.

10. The floating side arm rail inspection gauge of claim 1, wherein, The vertical movable body is provided with a top mounting surface and two side arm positioning pins, the track height and low gyroscope and the two side arm positioning pins are arranged on the top mounting surface, the two side arm positioning pins are symmetrically arranged on both sides of the track height and low gyroscope, and the side arm can be detachably installed on the top mounting surface of the vertical movable body through the side arm positioning pins.

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