Splicing non-contact steel rail straightness detection device

Abstract

The utility model provides a splicable non-contact steel rail straightness detection device, and belongs to the technical field of steel rail detection. Aiming at the problem that a non-contact steel rail straightness detection device is difficult to carry, the utility model provides a splicable non-contact steel rail straightness detection device which comprises a first detection mechanism, a second detection mechanism and a non-contact detection unit, each of the first detection mechanism and the second detection mechanism comprises a long-strip-shaped shell; the shell of the first detection mechanism and the shell of the second detection mechanism are both provided with communication ends, the two communication ends can be communicated, the sliding rails of the first detection mechanism and the second detection mechanism are aligned and spliced end to end, the detection grooves of the first detection mechanism and the second detection mechanism are aligned and spliced end to end, and the non-contact detection unit can continuously slide on the sliding rails of the first detection mechanism and the second detection mechanism and acquire corresponding detection data through the detection grooves of the first detection mechanism and the second detection mechanism. The device is divided into two sections, can provide a complete detection length reference by aligning and splicing the end surfaces when in use, and is divided into two sections when not in use, so that the overall length is shortened, and the device is convenient to carry.

Description

Technical Field

[0001] This application relates to the field of rail inspection technology, and in particular to a splicable non-contact rail straightness inspection device. Background Technology

[0002] Existing rail straightness detection devices are mainly divided into three types: the first is mechanical manual detection, which places the device on the rail and uses a feeler gauge or measuring slider to measure changes in straightness; the second is contact electronic detection, which uses closely spaced contacts at the bottom of the device to measure changes in straightness; and the third is non-contact electronic detection, which uses a laser displacement sensor to measure distance and thus changes in straightness. All three types of straightness detection devices are integrated structures.

[0003] The existing rail straightness detection devices have the following drawbacks:

[0004] (1) Mechanical manual inspection is a manual operation. If the feeler gauge is used as the inspection basis, the inspection efficiency is slow. If the measuring slider is used as the inspection basis, the measurement accuracy is low. Human eye reading may cause errors, and the inspection efficiency is slow.

[0005] (2) Contact electronic detection involves arranging a series of hundreds of contact detection heads on the contact surface between the device and the rail. The device is difficult to manufacture and install, and due to space limitations, it is difficult to increase or change the detection density.

[0006] (3) Non-contact electronic detection uses laser displacement sensors for detection, but the existing products are all integrated structures with a length of about 1.2m, which is inconvenient to carry on the road. Utility Model Content

[0007] The purpose of this application is to solve the problem that non-contact rail straightness testing devices are difficult to carry in the prior art. Therefore, this application provides a splicable non-contact rail straightness testing device, which divides a long rail straightness testing device into two sections through a first testing mechanism and a second testing mechanism. When in use, the end faces can be aligned and spliced ​​to provide a complete testing length benchmark. When not in use, it can be split into two sections to shorten the overall length, thereby making it easier to carry.

[0008] This application provides a splicable non-contact rail straightness detection device, including a first detection mechanism and a second detection mechanism that are separately arranged and can be spliced ​​together by aligning their end faces, and a non-contact detection unit disposed in the first detection mechanism or the second detection mechanism;

[0009] Both the first detection mechanism and the second detection mechanism include a long strip-shaped housing. A detection groove is formed on one side of the housing along its length. A slide rail and a drive mechanism are provided inside the housing. The non-contact detection unit can slide along the slide rail under the drive mechanism, and the detection end faces the detection groove.

[0010] Both the housing of the first detection mechanism and the housing of the second detection mechanism have a connecting end, and the two connecting ends can be connected, so that the slide rails of the two are aligned end to end and spliced ​​together, and the detection slots of the two are aligned end to end. The non-contact detection unit can slide continuously on the slide rails of the two and obtain corresponding detection data through the detection slots of the two.

[0011] The housing of the first detection mechanism and the housing of the second detection mechanism are provided with positioning mechanisms and clamping mechanisms at their two communicating ends, so that the two are aligned, spliced ​​and locked.

[0012] By adopting the above technical solution, the long rail straightness detection device is divided into two sections by the first and second detection mechanisms. When in use, the end faces can be aligned and spliced ​​to provide a complete detection length benchmark. When not in use, it is split into two sections to shorten the overall length, thus making it easier to carry. Furthermore, the first and second detection mechanisms ensure the accuracy and stability of their alignment and splicing through the positioning and clamping mechanisms at the connecting ends, thereby ensuring the reliability of the detection.

[0013] In some embodiments, a reference pad is provided at the end of the housing away from its communicating end. The reference pad and the detection groove are located on the same side of the housing for contacting the rail detection surface, and the reference surface of the reference pad is parallel to the slide rail.

[0014] A magnet is installed inside the reference pad.

[0015] By adopting the above technical solution, the reference pad provides the detection benchmark for the entire detection device, improving the detection reliability. Furthermore, the reference pad is magnetically fixed to the rail, improving the stability of the detection device during the detection process, thereby further enhancing the detection reliability. It is also easy to operate, has a simple structure, and allows for control over the overall size and weight of the detection device, making it easier to carry. At the same time, the magnetic fixation allows for flexible fixing of the detection device to the rail, meaning it can be fixed to the top surface or the side of the rail, thus taking into account all-round rail straightness detection and improving the versatility of this detection device.

[0016] In some embodiments, a fixed lateral reference block is provided on one side of the reference pad, the fixed lateral reference block is used to abut against the side of the rail, and so that the detection groove is located at the detection position on the top surface of the rail.

[0017] In some embodiments, a rotating lateral reference block is provided on one side of the reference pad. The rotating lateral reference block can rotate to a first position and a second position. When the rotating lateral reference block is in the first position, it is flush with the reference pad. When the rotating lateral reference block is in the second position, it is perpendicular to the reference pad and is used to abut against the top surface of the rail, so that the detection groove is located at the detection position on the side of the rail.

[0018] In some embodiments, the housing is provided with a calibration block on the detection slot, the calibration block having a calibration surface for shielding the detection slot, and the calibration block being disposed near the communicating end of the housing, so that the non-contact detection unit obtains a calibration signal through the calibration surface of the calibration block.

[0019] By adopting the above technical solution, when the non-contact detection unit slides to the connection point of the first and second detection mechanisms via a calibration block located near the connecting end, a calibration signal that is clearly different from the detection signal can be obtained. This allows the detection signal of poor quality caused by the vibration of the non-contact detection unit due to the structural connection to be distinguished from the detection signal, thereby improving the reliability of the detection.

[0020] In some embodiments, the positioning mechanism includes at least three positioning pins and matching positioning slots;

[0021] One of the two connecting ends is provided with the positioning pin, and the other is provided with the positioning groove.

[0022] The above technical solution uses positioning pins and positioning slots for positioning, resulting in a simple structure and high positioning accuracy.

[0023] In some embodiments, two clamping mechanisms are provided, and the two clamping mechanisms are respectively provided on opposite sides of the housing of the first detection mechanism and the housing of the second detection mechanism;

[0024] The clamping mechanism is an eccentric clamping mechanism, and includes clamping claws and matching claw grooves. The claw grooves include a first groove and a second groove that are symmetrically arranged and respectively disposed on the corresponding sides of the housing of the first detection mechanism and the housing of the second detection mechanism. When clamping, the clamping claws are embedded and drive the first groove and the second groove to be squeezed relative to each other.

[0025] By adopting the above technical solution, the double-sided cross clamping at the connection point can further improve the clamping reliability, thereby ensuring the connection stability of the first and second detection mechanisms during use and ensuring detection reliability.

[0026] In some embodiments, the drive mechanism includes a motor and a rack and pinion drive assembly parallel to the slide rail, wherein the rack and pinion drive assembly and the slide rail are respectively disposed on adjacent two sides of the housing;

[0027] The non-contact detection unit is connected to the gear and rack transmission assembly and the slide rail via a mounting base.

[0028] In some embodiments, the connecting end of the housing is provided with a flip cover and a first magnet. When the flip cover is in the open state, it is magnetically attached to the side of the housing by the first magnet. When the flip cover is in the closed state, it is locked by the clamping mechanism.

[0029] By adopting the above technical solution, the internal components of the housing can be protected when not in use by using a flip cover, which can extend the service life of this testing device. In addition, when in use, the flip cover is fixed to the housing by magnetic attraction, and when not in use, the flip cover is fixed to the housing by a clamping mechanism. The structure is simple and the overall size and weight of the testing device can be controlled, which further facilitates portability.

[0030] In some embodiments, locking seats and matching locking blocks are respectively provided at both ends of the housing. The two housings can be arranged side by side and locked by inserting the locking blocks into the corresponding locking seats and then inserting pins.

[0031] By adopting the above technical solution, when not in use, the first and second testing units can be connected as a whole, which further facilitates portability.

[0032] Other features and corresponding beneficial effects of this application will be described in the latter part of the specification, and it should be understood that at least some of the beneficial effects will become obvious from the description in this application. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the assembled structure of the first and second testing institutions in this application;

[0034] Figure 2 This is a schematic diagram of the internal structure of the first testing institution in this application;

[0035] Figure 3 This is a partial structural diagram of the first and second testing institutions in this application before assembly;

[0036] Figure 4 This is a schematic diagram of the clamping mechanism in this application;

[0037] Figure 5 This is a schematic diagram of the structure of the housing connection end of the first testing mechanism in this application;

[0038] Figure 6This is a schematic diagram of the assembled structure of the first and second testing institutions in this application in a non-use state;

[0039] Figure 7 This is a schematic diagram illustrating the usage status of the rail top surface inspection in this application;

[0040] Figure 8 This is a schematic diagram illustrating the usage of the rail side inspection method described in this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. First testing institution; 2. Second testing institution; 3. Electrical control box;

[0043] 100. Housing; 101. Connecting end; 110. Detection groove; 111. Calibration block; 120. Slide rail; 130. Gear and rack transmission assembly; 140. Mounting base; 150. Cable chain; 160. Reference pad; 170. Fixed lateral reference block; 180. Rotating lateral reference block; 181. Second magnet; 190. Flip cover; 191. First magnet; 192. Magnetic block;

[0044] 210. Locating pin; 220. Locating groove;

[0045] 300. Clamping mechanism; 310. Clamping jaws; 320. Jaw groove;

[0046] 410. Locking seat; 420. Bolt. Detailed Implementation

[0047] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with preferred embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0048] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more. Unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] It should be noted that when inspecting railway tracks in the field or working across regions, the space of the transport vehicle is often limited. However, the current conventional non-contact rail straightness inspection device is about 1.2m long. The length is too long to fit in ordinary vehicles or small tool storage boxes, making it inconvenient to carry. At the same time, the excessive length also makes it easy to be damaged during transport.

[0051] Please see Figure 1-5 , Figure 1 This is a schematic diagram of the assembled structure of the first testing unit 1 and the second testing unit 2 in this application; Figure 2 This is a schematic diagram of the internal structure of the first testing institution 1 in this application; Figure 3 This is a partial structural diagram of the first testing institution 1 and the second testing institution 2 before assembly in this application; Figure 4 This is a schematic diagram of the clamping mechanism 300 in this application; Figure 5 This is a schematic diagram of the structure of the connecting end of the housing 100 of the first testing mechanism 1 in this application.

[0052] This application provides a splicable non-contact rail straightness detection device, including a first detection mechanism 1 and a second detection mechanism 2 that are separately arranged and can be spliced ​​together by aligning their end faces, and a non-contact detection unit disposed within the first detection mechanism 1 or the second detection mechanism 2. That is, the first detection mechanism 1 and the second detection mechanism 2 are two completely separate sections. When storing, the two sections can be placed side by side to shorten the overall length, thereby making it easy to carry. During detection, the connection is achieved by aligning and splicing the end faces, providing a complete detection length benchmark for the non-contact detection unit.

[0053] Meanwhile, compared to the folding method, where the first detection mechanism 1 and the second detection mechanism 2 are folded together via hinges, this method offers higher docking accuracy and repeatability, thus ensuring detection precision. While maintaining hinge flexibility, some gaps are inevitable between the hinge components. These gaps can compromise accuracy and repeatability when transitioning from the folded state to the detection state, and can result in slightly larger deviations between each fold and the previous one. Furthermore, the folding method makes it difficult to install positioning pins to enhance positioning accuracy.

[0054] Compared to the telescopic method, where the first detection mechanism 1 and the second detection mechanism 2 are telescopically connected, this method can effectively control the overall size and weight of the device, thus making it easier to carry. Typically, to achieve telescopic functionality, an additional mechanism similar to a slide rail needs to be added between the first detection mechanism 1 and the second detection mechanism 2, significantly increasing the overall width or height and weight of the device. Furthermore, the operating mechanism is difficult to implement, as various driving methods are not suitable for telescopically extending or retracting with the overall length.

[0055] It should be noted that the non-contact detection unit is existing technology and can be the non-contact detection unit in the existing rail straightness detection technology. Typically, this unit includes a laser displacement sensor, which enables non-contact detection. At the same time, the detection unit slides along the first detection mechanism 1 and the second detection mechanism 2 to achieve detection within the specified detection range.

[0056] It should also be noted that the detection device typically includes an electrical control box 3, which provides the necessary power supply and control for the non-contact detection unit. In one specific embodiment, the electrical control box 3 is located on the top of the exterior of the first detection mechanism 1 or the second detection mechanism 2, thereby facilitating observation and operation by the operator.

[0057] In one embodiment, the first detection mechanism 1 and the second detection mechanism 2 have basically the same structure. Specifically, both the first detection mechanism 1 and the second detection mechanism 2 include a long strip-shaped housing 100. A detection groove 110 is formed on one side of the housing 100 along its length. A drive mechanism and a slide rail 120 are provided inside the housing 100. The non-contact detection unit can slide along the slide rail 120 under the drive mechanism, and the detection end faces the detection groove 110, thereby realizing the detection.

[0058] In one embodiment, the housing 100 of the first detection mechanism 1 and the housing 100 of the second detection mechanism 2 both have a connecting end 101, and the two connecting ends 101 can be connected, so that the slide rails 120 of the two are aligned end to end and spliced, and the detection grooves 110 of the two are aligned end to end. The non-contact detection unit can slide continuously on the slide rails 120 of the two and obtain corresponding detection data through the detection grooves 110 of the two.

[0059] In one embodiment, the drive mechanism includes a motor and a rack and pinion drive assembly 130 parallel to the slide rail 120. The rack and pinion drive assembly 130 and the slide rail 120 are respectively disposed on adjacent two sides of the housing 100. The non-contact detection unit is connected to the rack and pinion drive assembly 130 and the slide rail 120 through the mounting base 140, thereby achieving stable and reliable sliding.

[0060] It is understood that the gear in the gear and rack drive assembly 130 is connected to a motor, and the mounting base 140 is connected to the gear and the slide rail 120. Preferably, a helical gear and rack drive assembly is used.

[0061] Furthermore, in order to ensure that the connecting cable between the non-contact detection unit and the electrical control box 3 moves synchronously, stably, and reliably with the non-contact detection unit, a drag chain 150 is provided inside the first detection mechanism 1 or the second detection mechanism 2. The cable is protected by the drag chain 150 and moves synchronously with the non-contact detection unit.

[0062] In one embodiment, the housing 100 of the first detection mechanism 1 and the housing 100 of the second detection mechanism 2 are provided with a positioning mechanism and a clamping mechanism at their two connecting ends, so that the two are aligned and locked, ensuring the accuracy and stability of the alignment and splicing, thereby ensuring the reliability of the detection.

[0063] In one embodiment, the positioning mechanism includes at least three positioning pins 210 and matching positioning grooves 220. One of the two connecting ends 101 is provided with a positioning pin 210 and the other is provided with a positioning groove 220. Positioning is achieved by the cooperation of the positioning pins 210 and the positioning grooves 220. The structure is simple and the positioning accuracy is high.

[0064] In one specific embodiment, the housing 100 has a square cross-section, for example, a carbon fiber square tube, and four positioning pins 210 are provided, located at the four corners respectively.

[0065] In one embodiment, two clamping mechanisms are provided, and the two clamping mechanisms are respectively provided on opposite sides of the housing 100 of the first detection mechanism 1 and the housing 100 of the second detection mechanism 2. They are preferably arranged symmetrically about the center of the connection between the two, that is, the connection is achieved by double-sided cross clamping, which can further improve the clamping reliability, thereby ensuring the connection stability of the first detection mechanism 1 and the second detection mechanism 2 during use, the overall rigidity of the detection device, and ensuring the detection reliability.

[0066] In one specific embodiment, the clamping mechanism is an eccentric clamping mechanism, and includes clamping claws 310 and matching claw grooves 320. The claw grooves 320 include a first groove and a second groove symmetrically arranged and respectively disposed on the corresponding sides of the housing 100 of the first detection mechanism 1 and the housing 100 of the second detection mechanism 2. During clamping, the clamping claws 310 are inserted and drive the first groove and the second groove to be squeezed relative to each other.

[0067] In one embodiment, the housing 100 has a calibration block 111 on the detection groove 110. The calibration block 111 has a calibration surface for blocking the detection groove 110, and the calibration block 111 is disposed close to the communication end 101 of the housing 100, so that the non-contact detection unit obtains a calibration signal through the calibration surface of the calibration block 111.

[0068] It should be noted that even if the slide rails 120 and the gear and rack transmission assembly 130 in the first detection mechanism 1 and the second detection mechanism 2 are seamlessly aligned at the factory, gaps will inevitably occur during long-term use. This causes the non-contact detection unit to vibrate when passing through the connection point, resulting in poor accuracy of the detection signal in that section. This method uses a calibration block 111 located near the connecting end 101 to obtain a calibration signal that is clearly different from the detection signal when the non-contact detection unit slides to the connection point of the first detection mechanism 1 and the second detection mechanism 2. This allows for the differentiation of abnormal detection signals caused by vibration of the non-contact detection unit due to structural connection issues from the detection signal. By processing the calibration signal, the reliability of the detection can be improved.

[0069] In one embodiment, the connecting end 101 of the housing 100 is provided with a flip cover 190 and a first magnet 191. When the flip cover 190 is in the open state, it is magnetically attached to the side of the housing 100 by the first magnet 191. When the housing is in the closed state, it is locked by a clamping mechanism. Thus, the flip cover 190 protects the internal components of the housing 100 when it is not in use, which can extend the service life of the detection device. In use, the flip cover 190 is fixed to the housing 100 by magnetic attraction. When not in use, the flip cover 190 is fixed to the housing 100 by the clamping mechanism. The structure is simple and the overall size and weight of the detection device can be controlled, which further facilitates portability.

[0070] Preferably, the flip cover 190 is made of aluminum alloy. In this case, the flip cover 190 is provided with a magnetic block 192 corresponding to the first magnet 191.

[0071] Please see Figure 6 , Figure 6 This is a schematic diagram of the assembled structure of the first testing unit 1 and the second testing unit 2 in the non-use state of this application.

[0072] In one embodiment, locking seats 410 and matching locking blocks are respectively provided at both ends of the housing 100. The two housings 100 can be arranged side by side and locked by inserting the locking blocks into the corresponding locking seats 410 and then inserting the pins 420. Thus, when not in use, the first detection mechanism 1 and the second detection mechanism 2 can be connected as a whole, which is more convenient to carry.

[0073] Please see Figure 7-8 , Figure 7 This is a schematic diagram illustrating the usage status of the rail top surface inspection in this application; Figure 8 This is a schematic diagram illustrating the usage of the rail side inspection method described in this application.

[0074] In one embodiment, a reference pad 160 is provided at the end of the housing 100 away from its connecting end 101. The reference pad 160 and the detection groove 110 are located on the same side of the housing 100 for contacting the rail detection surface. The reference surface of the reference pad 160 is parallel to the slide rail 120. That is, the reference pad 160 provides the detection reference for the entire detection device, thereby improving the detection reliability.

[0075] Preferably, a magnet is provided inside the reference pad 160, allowing the reference pad 160 to be magnetically fixed to the rail. This improves the stability of the testing device during the testing process, thereby further enhancing the reliability of the test. It is also convenient to operate, has a simple structure, and allows for control over the overall size and weight of the testing device, making it easier to carry. Simultaneously, the magnetic fixing allows for flexible positioning of the testing device relative to the rail; it can be fixed to either the top or side of the rail, thus accommodating all-around rail straightness testing and improving the versatility of the testing device.

[0076] In one embodiment, a fixed lateral reference block 170 is provided on one side of the reference pad 160. The fixed lateral reference block 170 is used to abut against the side of the rail and to make the detection groove 110 located at the detection position on the top surface of the rail.

[0077] In one embodiment, a rotatable lateral reference block 180 is provided on one side of the reference pad 160, and the rotatable lateral reference block 180 can rotate in a first position and a second position. When the rotatable lateral reference block 180 is in the first position, the rotatable lateral reference block 180 is flush with the reference pad 160; when the rotatable lateral reference block 180 is in the second position, the rotatable lateral reference block 180 is perpendicular to the reference pad 160 and is used to abut against the top surface of the rail, so that the detection groove 110 is located at the detection position on the side of the rail.

[0078] Preferably, the housing 100 is provided with a second magnet 181 at the second position, and when the lateral reference block 180 rotates to the second position, it is magnetically fixed to the housing 100 by the second magnet 181.

[0079] In one embodiment, except for parts with special functions and requirements, most of the testing device can be made of 6061 aluminum alloy, and some parts without strength requirements can be made of POM material. While ensuring strength, the overall weight can be reduced as much as possible, and the overall design is lightweight.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A spliceable non-contact rail flatness detection device, characterized by, The first detection mechanism and the second detection mechanism are separately arranged and can be aligned and spliced through end faces, and a non-contact detection unit is arranged in the first detection mechanism or the second detection mechanism; The first detection mechanism and the second detection mechanism each include a shell in a strip shape, a detection groove is formed in one side of the shell along a length direction of the shell, a sliding rail and a driving mechanism are arranged in the shell, the non-contact detection unit can slide along the sliding rail under the driving of the driving mechanism, and a detection end faces the detection groove; The shell of the first detection mechanism and the shell of the second detection mechanism each have a communication end, the two communication ends can be communicated, the sliding rails of the two are aligned and spliced at the tail, the detection grooves of the two are aligned and spliced at the tail, the non-contact detection unit can continuously slide on the sliding rails of the two, and corresponding detection data can be obtained through the detection grooves of the two. The two communication ends of the shell of the first detection mechanism and the shell of the second detection mechanism are provided with a positioning mechanism and a clamping mechanism, so that the two are aligned and spliced and locked.

2. The spliceable non-contact rail flatness detection device of claim 1, wherein, An end of the shell away from the communication end is provided with a reference pad, the reference pad and the detection groove are arranged on the same side of the shell, are used for contacting a rail detection surface, and a reference surface of the reference pad is parallel to the sliding rail; A magnet is arranged in the reference pad.

3. The spliceable non-contact rail flatness detection device of claim 2, wherein, One side of the reference pad is provided with a fixed lateral reference block, the fixed lateral reference block is used for abutting against a rail lateral surface, and the detection groove is located at a detection position of a rail top surface.

4. The spliceable non-contact rail flatness detection device of claim 2, wherein, One side of the reference pad is provided with a rotating lateral reference block, the rotating lateral reference block can rotate at a first position and a second position, when the rotating lateral reference block is located at the first position, the rotating lateral reference block is flush with the reference pad, when the rotating lateral reference block is located at the second position, the rotating lateral reference block is perpendicular to the reference pad, is used for abutting against the rail top surface, and the detection groove is located at a detection position of the rail lateral surface.

5. The spliceable non-contact rail profile gauge of claim 1, wherein, The shell is provided with a calibration block on the detection groove, the calibration block has a calibration surface used for shielding the detection groove, and the calibration block is arranged close to the communication end of the shell, so that the non-contact detection unit obtains a calibration signal through the calibration surface of the calibration block.

6. The spliceable non-contact rail profile detection device of claim 1, wherein, The positioning mechanism includes at least three positioning pins and matching positioning grooves; One of the two communication ends is provided with the positioning pins, and the other is provided with the positioning grooves.

7. The spliceable non-contact rail profile gauge of claim 1, wherein, The clamping mechanism is arranged in two, and the two clamping mechanisms are respectively arranged on opposite sides of the shell of the first detection mechanism and the shell of the second detection mechanism. The clamping mechanism is an eccentric clamping mechanism, and includes a clamping claw and a matching claw groove, the claw groove includes a first groove body and a second groove body which are symmetrically arranged and separately arranged on corresponding sides of the shell of the first detection mechanism and the shell of the second detection mechanism, and the clamping claw is embedded and drives the first groove body and the second groove body to be relatively pressed when clamping.

8. The spliceable non-contact rail profile detection device of claim 1, wherein, The driving mechanism comprises a motor and a gear and rack transmission assembly parallel to the slide rail, and the gear and rack transmission assembly and the slide rail are arranged on two adjacent side surfaces of the shell respectively; The non-contact detection unit is connected with the gear and rack transmission assembly and the slide rail through a mounting seat.

9. The spliceable non-contact rail profile detection device of claim 1, wherein, A flip cover and a first magnet are arranged on the communication end of the shell, the flip cover is magnetically attracted to the side surface of the shell in the open state through the first magnet, and is locked in the closed state through the clamping mechanism.

10. The spliceable non-contact rail profile detection device of claim 1, wherein, Locking seats and matching locking blocks are arranged on the two ends of the shell respectively, two shells can be arranged side by side, and are locked by inserting the locking blocks into the corresponding locking seats and then inserting a bolt.

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