Measuring device

Abstract

The measuring device comprises a first ruler, a second ruler and a third ruler, the first ruler is used for extending along a first direction; the second ruler is in sliding connection with the first ruler, the second ruler is used for extending in the second direction, and the first direction is perpendicular to the second direction; the third ruler is slidably connected with the second ruler, and the third ruler is used for extending in the first direction. The measuring device can measure the dimensions in two directions, and meets the measurement requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a measuring device. Background Art

[0002] The axle counting system is a safety device specially used for checking the occupancy of trains in sections (segments) of rail transit. It adopts active electromagnetic sensors and a 2-out-of-2 computer structure. The microprocessor performs calculations and checks on the idle or occupied sections (segments), and outputs the inspection results in the form of relay excitation or demagnetization conditions to the corresponding blocking or interlocking equipment. The system design complies with the fault safety principle of rail transit signal equipment. When equipment failure occurs or a train is occupied, the system outputs the section (section) track occupancy condition and controls the corresponding section track relay to fall, thereby leading to a safe output.

[0003] However, in rubber-tyred tram transportation, the axle counting sensor device is installed beside the track, and the installation size accuracy is high to ensure the stable operation of the axle counting system. The measurement scheme of the wheel sensor of the rubber-tyred tram needs to measure the dimensions in two perpendicular directions. The existing measuring devices are mainly used in combination with steel rulers, tape measures and auxiliary tools. A single measuring device cannot meet the measurement requirements, and the operation is complicated when measuring the dimensions. Utility Model Content

[0004] The utility model aims to provide a measuring device to solve the problem that the existing single measuring device cannot meet the measurement requirements.

[0005] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0006] The utility model provides a measuring device, comprising:

[0007] A first ruler, used to extend along a first direction;

[0008] a second ruler, slidably connected to the first ruler, the second ruler being configured to extend along a second direction, the first direction being perpendicular to the second direction;

[0009] The third ruler is slidably connected to the second ruler, and the third ruler is used to extend along the first direction.

[0010] In one embodiment, the first ruler includes a main ruler and a telescopic ruler that are slidably connected, the main ruler encloses a receiving space, the telescopic ruler extends from or retracts into the receiving space, and both the main ruler and the telescopic ruler extend along the first direction.

[0011] In one embodiment, the first ruler further includes a first positioning member and a second positioning member, the first positioning member is arranged at an end of the main ruler away from the telescopic ruler, and the second positioning member is arranged at an end of the telescopic ruler away from the main ruler, and the first positioning member and the second positioning member are suitable for performing positioning operations in the first direction and the second direction.

[0012] In one embodiment, the measuring device further includes a first connecting member and a first level, the first connecting member is fixedly connected to the telescopic ruler, the first connecting member is slidably connected to the main ruler, and the first level is disposed on the first connecting member.

[0013] In one embodiment, the measuring device further comprises a second connecting member, and the second connecting member is slidably connected to both the telescopic ruler and the second ruler.

[0014] In one embodiment, the measuring device further comprises a third connecting member, and the third connecting member is slidably connected to both the second ruler and the third ruler.

[0015] In one embodiment, the measuring device further includes a fourth connecting member and a second level, the fourth connecting member is slidably connected to the third ruler, the second level is arranged on the fourth connecting member, and the second level is used to determine the level of the measured object in the second direction.

[0016] In one embodiment, the measuring device further comprises a sensor block, and the sensor block is slidably connected to the second ruler.

[0017] In one embodiment, the second ruler is rotatably connected to the first ruler, and the third ruler is rotatably connected to the second ruler. The second ruler and the third ruler are also used to rotate to extend along the first direction so that the first ruler, the second ruler and the third ruler are stored as a whole.

[0018] In one embodiment, the second ruler is suitable for abutting against the axle counting sensor device of the track system, and the second ruler cooperates with the first ruler to measure a first distance, and the first distance is the distance between the axle counting sensor device and the track of the track system in the first direction; the third ruler is suitable for abutting against the axle counting sensor device, and the third ruler cooperates with the second ruler to measure a second distance, and the second distance is the distance between the axle counting sensor device and the running surface of the track in the second direction.

[0019] The measuring device of the utility model comprises a first ruler and a third ruler extending in a first direction, and a second ruler extending in a second direction. Only the measuring device can be used to measure the dimensions of the workpiece in the first direction and the second direction without using other measuring tools. The measuring device can meet the measurement requirements of dimensions in multiple directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is a front view of a track system of one embodiment;

[0022] Figure 2 yes Figure 1 A partial enlarged view of middle A;

[0023] Figure 3 is a front view of a measuring device according to an embodiment.

[0024] Description of reference numerals:

[0025] 10-measuring device, 11-first ruler, 111-main ruler, 112-telescopic ruler, 113-first positioning member, 114-second positioning member, 115-first connecting member, 116-first level, 117-auxiliary connecting member, 118-first tightening handwheel, 119-accommodating space, 12-second ruler, 121-second connecting member, 122-second tightening handwheel, 13-third ruler, 131-third connecting member, 132-third tightening handwheel, 133-fourth connecting member, 134-second level, 14-sensor sensing block, 20-track, 21-track beam, 211-first side wall, 30-axle counter sensing device, 31-axle counter sensor, 32-mounting bracket, 321-first plate, 322-second plate, 323-third plate, X-first direction, Y-second direction. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0029] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0030] For reference Figure 1 and Figure 2 , Figure 2 for Figure 1 In the partial enlarged view of A in the middle, the utility model provides a track system, including a track and an axle counter sensor device 30. The axle counter sensor device 30 is arranged on the track, and the installation position of the axle counter sensor device 30 on the track is measured by the measuring device 10.

[0031] The track system may specifically be a rubber-tyred tram system, the track of the rubber-tyred tram system includes two track beams 21, the two track beams 21 are arranged opposite to each other along a first direction X, the height direction of the track beams 21 is the second direction Y, the axle counter sensor device 30 is installed on the inner wall surface of any track beam 21 facing the other track beam 21, the inner wall surface of the track beam 21 is installed is the first side wall 211, and the first side wall 211 is parallel to the second direction Y. The material of the track beam 21 can be concrete, steel, rubber, elastic material, etc., without limitation.

[0032] The axle counter sensor device 30 includes a mounting bracket 32 ​​and an axle counter sensor 31. The mounting bracket 32 ​​is connected and fixed to the first side wall 211, and the connection method can be screwed. The mounting bracket 32 ​​includes a first plate 321, a second plate 322 and a third plate 323. The first plate 321 extends along the second direction Y, the first plate 321 is connected and fixed to the first side wall 211 of the track beam 21, the second plate 322 is tightly attached to the first plate 321 in the second direction Y, the third plate 323 is connected to the second plate 322, and the third plate 323 extends along the first direction X. The axle counter sensor 31 is connected and fixed to the third plate 323. Specifically, the connection method of the first plate 321 to the track beam 21 can be screwed, welded, etc., and the connection method of the second plate 322 to the first plate 321 can be screwed, bonded, welded, etc. The mounting bracket 32 ​​provides fixed limits in two directions for the axle counter sensor 31, thereby improving the connection strength between the axle counter sensor 31 and the mounting bracket 32 ​​and the structural stability of the axle counter sensor device 30. The mounting bracket 32 ​​can be made of high-strength plastic, metal, etc. without limitation.

[0033] The axle counter sensor 31 usually uses the principle of electromagnetic induction to detect the passage of the wheel. When the wheel passes through the axle counter sensor 31, the magnetic field around the axle counter sensor 31 will change, thereby generating an electrical signal. The electrical signal can be processed and analyzed to determine the number and position of the wheel. The axle counter sensor 31 includes a sensor probe, a signal processing circuit, and a housing. The sensor probe is responsible for detecting the passage of the wheel and generating a corresponding electrical signal. The signal processing circuit amplifies, filters, and digitizes the electrical signal for subsequent analysis and judgment. The housing protects the internal circuits and components of the sensor. The connection method between the housing and the third plate 323 can be screwing, welding, etc., without limitation. Specifically, the model of the axle counter sensor 31 can be CC200K-1.

[0034] During the installation process, the axle counter sensor device 30 needs to measure the relevant data of the first direction X and the second direction Y to ensure its installation accuracy. And after a period of use, the position of the axle counter sensor 31 needs to be checked to observe the wear of the track and ensure the normal use of the axle counter sensor 31. The existing measuring device 10 is mainly used with a steel ruler, a tape measure and auxiliary tools. The process is complicated and the installation accuracy cannot be guaranteed. It also requires multiple people to operate. The measuring device 10 of the utility model can measure dimensions in multiple directions and can meet the installation requirements of the axle counter sensor device 30.

[0035] The measuring device 10 according to the embodiment of the utility model is described in detail below.

[0036] For reference Figure 1 and Figure 2The utility model provides a measuring device 10, comprising a first ruler 11, a second ruler 12 and a third ruler 13. The first ruler 11 is used to extend along a first direction X. The second ruler 12 is slidably connected to the first ruler 11, and the second ruler 12 is used to extend along a second direction Y, and the first direction X is perpendicular to the second direction Y. The third ruler 13 is slidably connected to the second ruler 12, and the third ruler 13 is used to extend along the first direction X.

[0037] The materials of the first ruler 11, the second ruler 12 and the third ruler 13 can be plastic, metal, wood, etc., without limitation.

[0038] The first ruler 11 extends along the first direction X, and can specifically measure the spacing between the track beams 21 in the first direction X. Comparison of the spacing difference in the first direction X after installation and use can be used as one of the judgment data for the wear of the track 20 .

[0039] The measuring device 10 of the present invention includes a first ruler 11 and a third ruler 13 extending in a first direction X, and a second ruler 12 extending in a second direction Y. Only the measuring device 10 can be used to measure the dimensions of the workpiece in the first direction X and the second direction Y without using other measuring tools. The measuring device 10 can meet the measurement requirements of dimensions in multiple directions.

[0040] For reference Figure 1 In one embodiment, the first ruler 11 includes a main ruler 111 and a telescopic ruler 112 that are slidably connected. The main ruler 111 encloses a receiving space 119. The telescopic ruler 112 extends from or retracts into the receiving space 119. Both the main ruler 111 and the telescopic ruler 112 extend along the first direction X.

[0041] The two sides of the main ruler 111 extending along the first direction X are higher than the middle area extending along the first direction X, so that the receiving space 119 can pass through the main ruler 111 in the first direction X. The telescopic ruler 112 extends from the receiving space 119 to extend the measuring distance of the first ruler 111 in the first direction X. The telescopic ruler 112 is retracted into the receiving space 119 to facilitate the carrying of the measuring device 10.

[0042] The third direction is the extension direction of the track 20. The first direction X, the second direction Y and the third direction are perpendicular to each other. The receiving space 119 may penetrate the main scale 111 in the third direction, or may not penetrate it, without limitation.

[0043] The main ruler 111 and the telescopic ruler 112 can be provided to extend the first ruler 11 in the first direction X, and can adapt to more measurement environments. At the same time, when the measuring device 10 is not in operation, the size of the first ruler 11 can be reduced while ensuring the measurement length, thereby improving the portability of the measuring device 10.

[0044] For reference Figure 1 and Figure 3 In one embodiment, the first ruler 11 further includes a first positioning member 113 and a second positioning member 114. The first positioning member 113 is disposed at one end of the main ruler 111 away from the telescopic ruler 112, and the second positioning member 114 is disposed at one end of the telescopic ruler 112 away from the main ruler 111. The first positioning member 113 and the second positioning member 114 are suitable for performing positioning operations in the first direction X and the second direction Y.

[0045] The first positioning member 113 and the second positioning member 114 may be of an "L"-like shape. Specifically, the first positioning member 113 includes a first section and a second section that are connected, the first section extends along the first direction X, and the second section extends along the second direction Y. The first section is used to abut against the running surface of the track beam 21 in the second direction Y, and the second section is used to abut against the side wall of the track beam 21 in the first direction X toward another track beam 21, thereby achieving the positioning and limiting effect of the measuring device 10 in the first direction X and the second direction Y.

[0046] The intersection of the running surface and the side wall of the track beam 21 can be a smooth transition or a right angle. Correspondingly, the connection between the first positioning member 113 and the second positioning member 114 can be a smooth transition or a right angle, so that the first positioning member 113 and the second positioning member 114 are tightly attached to the track beam 21 in the first direction X and the second direction Y, thereby enhancing its positioning and limiting effects.

[0047] The first positioning member 113 and the main ruler 111 may be an integrated structure, that is, an integrated structure prepared by an integrated process, and the integrated process may be stamping, casting, pouring, etc. The first positioning member 113 and the main ruler 111 may also be a split structure, and the corresponding connection method may be screw connection, bonding, clamping, welding, etc., without limitation. The connection method between the second positioning member 114 and the telescopic ruler 112 may be the same as the connection method between the first positioning member 113 and the main ruler 111, or may be different. Specifically, the first positioning member 113 and the main ruler 111 are connected and fixed by a stopper fastening screw, and the stopper fastening screw may be made of high-strength alloy steel or stainless steel, etc. The stopper fastening screw has an anti-loosening property, which can effectively prevent the threaded interface from loosening or falling off by itself, and can ensure that the connection remains stable under long-term use or vibration environment.

[0048] The first positioning member 113 and the second positioning member 114 are suitable for providing a reference for the measurement of the measuring device 10. Optionally, in the track system, the first positioning member 113 and the second positioning member 114 are in close contact with the track beam 21, so that the measurement reference of the measuring device 10 is the running surface of the track beam 21 in the second direction Y, and the measuring device 10 is limited and positioned in the first direction X and the second direction Y.

[0049] For reference Figure 1In one embodiment, the measuring device 10 further includes a first connecting member 115 and a first level 116 . The first connecting member 115 is fixedly connected to the telescopic ruler 112 , the first connecting member 115 is slidably connected to the main ruler 111 , and the first level 116 is disposed on the first connecting member 115 .

[0050] The first connecting member 115 can be made of metal or hard plastic, specifically aluminum alloy, stainless steel, etc., without limitation.

[0051] The first level 116 can be a universal level, a cylindrical level, an integrated level, a mini level, a camera level, a frame level, a ruler level, etc., without limitation.

[0052] The telescopic ruler 112 is connected and fixed to the first connecting member 115 , so that both the telescopic ruler 112 and the first connecting member 115 can slide in the first direction X relative to the main ruler 111 .

[0053] The measuring device 10 further includes an auxiliary connecting member 117 , which is disposed on the telescopic ruler 112 and spaced apart from the first connecting member 115 in the first direction X.

[0054] The connection between the first connecting member 115 and the main ruler 111 can be a screw connection. Specifically, the first connecting member 115 and the main ruler 111 are connected via a first tightening hand wheel 118. The measurement personnel can apply force via the first tightening hand wheel 118 to tighten or loosen the first connecting member 115, thereby fixing or changing the size of the telescopic ruler 112 extending out of the receiving space 119.

[0055] The first connecting member 115 can drive the telescopic ruler 112 to extend from the receiving space 119 , and can also drive the telescopic ruler 112 to retract into the receiving space 119 , so as to adjust the size of the first ruler 11 in the first direction X.

[0056] For reference Figure 1 In one embodiment, the measuring device 10 further includes a second connecting member 121 , and the second connecting member 121 is slidably connected to both the telescopic ruler 112 and the second ruler 12 .

[0057] In order to allow the telescopic ruler 112 and the second ruler 12 to slide relative to the second connecting member 121, the telescopic ruler 112 is composed of two scales arranged opposite to each other in the second direction Y, and the ends of the two scales in the first direction X are connected to each other, so that the second connecting member 121 slides on the two scales.

[0058] Correspondingly, the second ruler 12 is formed by two scales extending along the second direction Y and arranged relatively at an interval, and the ends of the two scales are connected and fixed.

[0059] The second connecting member 121 drives the second ruler 12 to slide on the telescopic ruler 112 along the first direction X. The second connecting member 121, the telescopic ruler 112 and the second ruler 12 may be connected by screw connection. Specifically, the second connecting member 121, the telescopic ruler 112 and the second ruler 12 are connected by a second tightening hand wheel 122. The measurement personnel can apply force through the second tightening hand wheel 122 to tighten or loosen the second connecting member 121, thereby fixing or changing the sliding dimension of the second ruler 12 relative to the telescopic ruler 112 in the second direction Y.

[0060] For reference Figure 1 and Figure 2 In one embodiment, the measuring device 10 further includes a third connecting member 131 , and the third connecting member 131 is slidably connected to both the second ruler 12 and the third ruler 13 .

[0061] The corresponding third ruler 13 is formed by two scales extending along the first direction X and arranged at an interval relative to each other, and the ends of the two scales are connected and fixed.

[0062] The third connecting member 131 is connected to the second ruler 12 and the third ruler 13 via a third tightening hand wheel 132. The measurement personnel can tighten or loosen the third connecting member 131 via the third tightening hand wheel 132, thereby fixing or changing the sliding dimension of the third ruler 13 relative to the second ruler 12 in the first direction X.

[0063] For reference Figure 1 and Figure 2 In one embodiment, the measuring device 10 further includes a fourth connecting member 133 and a second level 134. The fourth connecting member 133 is slidably connected to the third ruler 13. The second level 134 is disposed on the fourth connecting member 133. The second level 134 is used to determine the level of the test piece in the second direction Y.

[0064] The second level 134 is used to determine whether the third ruler 13 , the first side wall 211 of the track beam 21 , the first plate 321 of the mounting bracket 32 ​​, and the axle counter sensor 31 are level with the second direction Y.

[0065] The fourth connecting member 133 serves as an auxiliary block of the second level 134 and is a tool for assisting the use of the second level 134 to help the second level 134 be placed on the object to be measured more stably and accurately, thereby improving the accuracy and reliability of measurement.

[0066] The fourth connecting member 133 is made of a solid and stable material, specifically metal or hard plastic, to ensure that it is not easily deformed or moved during use. The shape and size of the fourth connecting member 133 are set corresponding to the second level 134 so that it can closely match the second level 134 and provide sufficient support.

[0067] During use, the fourth connecting member 133 is placed on the surface of the object to be measured, and the second level 134 is arranged on the fourth connecting member 133, which provides a more stable test basis for the second level 134 and reduces errors caused by factors such as surface unevenness or vibration. At the same time, the fourth connecting member 133 can also help adjust the position and angle of the second level 134, making it easier to reach a horizontal state.

[0068] The fourth connecting member 133 and the second level 134 can be used together to effectively improve the accuracy and reliability of the measuring device 10 in the second direction Y.

[0069] For reference Figure 1 and Figure 2 In one implementation, the measuring device 10 further includes a sensor block 14 , and the sensor block 14 is slidably connected to the second ruler 12 .

[0070] During the running of the rubber-tyred tram, the tram swings greatly, and the sensing distance of the axle counter sensor 31 is small. The sensor sensing block 14 can simulate the induction plate of the tram to simulate the axle stroke.

[0071] The sensor block 14 and the second ruler 12 can be connected in a screw connection, welding, clamping, bonding, etc., that is, the sensor block 14 and the second ruler 12 can be detachably connected, that is, the measuring device 10 only needs to be provided with the sensor block 14 during the installation and maintenance of the axle counter sensor 31, and in other measurement environments where multiple dimensions need to be measured, the measuring device 10 does not need to be provided with the sensor block 14.

[0072] The sensor induction block 14 is arranged corresponding to the axle counter sensor 31. The sensor includes a coil and an iron core. The sensor is used to simulate the electromagnetic signal generated by the induction plate of the tram, and simulate the detection of the axle counter sensor device 30, so as to observe whether the installed axle counter sensor 31 can complete the stable operation of the axle counter system, thereby determining whether the axle counter sensor 31 is installed in place, saving the multiple workload of the measurement personnel and improving the work efficiency.

[0073] For reference Figure 1 and Figure 3 , Figure 3 1 is a front view of the measuring device 10 in a non-working state. In one embodiment, the second ruler 12 is rotatably connected to the first ruler 11, and the third ruler 13 is rotatably connected to the second ruler 12. The second ruler 12 and the third ruler 13 are used to rotate to extend along the first direction X, so that the first ruler 11, the second ruler 12 and the third ruler 13 are stored as a whole. Figure 3 In the figure, the second ruler 12 and the third ruler 13 are located on the back of the first ruler 11.

[0074] When the measuring device 10 is not in operation, the second ruler 12 and the third ruler 13 can both rotate to the first direction X, so that the measuring device 10 extends only along the first direction X, and the measuring device 10 can be stored, making it easier to carry the measuring device 10 and easier for measurement personnel to use.

[0075] In one embodiment, the second ruler 12 is suitable for abutting against the axle counting sensor device 30 of the track system, and the second ruler 12 cooperates with the first ruler 11 to measure a first distance, which is the distance between the axle counting sensor device 30 and the track 20 of the track system in the first direction X; the third ruler 13 is suitable for abutting against the axle counting sensor device 30, and the third ruler 13 cooperates with the second ruler 12 to measure a second distance, which is the distance between the axle counting sensor device 30 and the running surface of the track 20 in the second direction Y.

[0076] Specifically, during the installation process of the axle counter sensor device 30, the first fixing member and the second fixing member on the first ruler 11 of the measuring device 10 of the utility model are in close contact with the side wall surface opposite to the track beam 21 in the first direction X and the running surface in the second direction Y. The fixed main ruler 111 and the telescopic ruler 112 measure the dimensions of the two track beams 21 in the first direction X, and at the same time, the first level 116 is used to determine whether the running surfaces of the two track beams 21 in the second direction Y are flush, and the wear of the track beam 21 is observed. The second tightening hand wheel 122 is used to slide the second ruler 12 to a suitable position and fix it, and measure multiple dimensions of the axle counter sensor device 30 and the running surface of the track beam 21 in the second direction Y. The third tightening hand wheel 132 is used to slide the third ruler 13 to a suitable position and fix it, and measure the dimensions of the axle counter sensor 31 and the mounting bracket 32 ​​in the axle counter sensor device 30 and the track beam 21 in the first direction X. The second level 134 on the third ruler 13 is used to observe whether the axle counter sensor, the mounting bracket 32 ​​and the track beam 21 are level in the second direction Y with the assistance of the fourth connecting member 133. After the installation is completed, the sensor block 14 is used to simulate and observe whether the axle counter sensor device 30 is installed properly.

[0077] The measuring device 10 of the utility model can integrate the measuring function and the limiting function, can measure the specific installation position before installation, can also play a limiting role during the installation process, and can also determine whether the installation is qualified after the installation is completed to prevent construction deviation, and is simple and easy to operate, highly practical, has few parts, a simple structure, and is easy to carry. In addition to being used in the measurement of the axle counter sensor device 30 of the rail system, the measuring device 10 of the utility model is also applicable to other environments where dimensions in multiple directions need to be measured.

[0078] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A measuring device, characterized in that: include: A first ruler, used to extend along a first direction; a second ruler, slidably connected to the first ruler, the second ruler being configured to extend along a second direction, the first direction being perpendicular to the second direction; The third ruler is slidably connected to the second ruler, and the third ruler is used to extend along the first direction.

2. The measuring device according to claim 1, characterized in that The first ruler comprises a main ruler and a telescopic ruler which are slidably connected, the main ruler encloses a receiving space, the telescopic ruler extends from or retracts into the receiving space, and both the main ruler and the telescopic ruler extend along the first direction.

3. The measuring device according to claim 2, characterized in that The first ruler also includes a first positioning member and a second positioning member. The first positioning member is arranged at an end of the main ruler away from the telescopic ruler, and the second positioning member is arranged at an end of the telescopic ruler away from the main ruler. The first positioning member and the second positioning member are suitable for performing positioning operations in the first direction and the second direction.

4. The measuring device according to claim 2, characterized in that The measuring device further comprises a first connecting member and a first level, wherein the first connecting member is fixedly connected to the telescopic ruler, the first connecting member is slidably connected to the main ruler, and the first level is arranged on the first connecting member.

5. The measuring device according to claim 2, characterized in that The measuring device further comprises a second connecting member, and the second connecting member is slidably connected to both the telescopic ruler and the second ruler.

6. The measuring device according to claim 1, characterized in that The measuring device further comprises a third connecting member, and the third connecting member is slidably connected to both the second ruler and the third ruler.

7. The measuring device according to claim 1, characterized in that The measuring device also includes a fourth connecting member and a second level, wherein the fourth connecting member is slidably connected to the third ruler, and the second level is arranged on the fourth connecting member, and the second level is used to judge the level of the measured object in the second direction.

8. The measuring device according to claim 1, characterized in that The measuring device further comprises a sensor sensing block, and the sensor sensing block is slidably connected to the second ruler.

9. The measuring device according to any one of claims 1 to 8, characterized in that: The second ruler is rotatably connected to the first ruler, and the third ruler is rotatably connected to the second ruler. The second ruler and the third ruler are also used to rotate to extend along the first direction so that the first ruler, the second ruler and the third ruler are stored as a whole.

10. The measuring device according to any one of claims 1 to 8, characterized in that The second ruler is suitable for abutting against the axle counting sensor device of the track system, and the second ruler cooperates with the first ruler to measure a first distance, and the first distance is the distance between the axle counting sensor device and the track of the track system in the first direction; the third ruler is suitable for abutting against the axle counting sensor device, and the third ruler cooperates with the second ruler to measure a second distance, and the second distance is the distance between the axle counting sensor device and the running surface of the track in the second direction.

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