Seamless track displacement measuring device for high-speed rail steel rail

Abstract

The utility model provides a seamless track displacement measuring device for a high-speed rail steel rail, which belongs to the technical field of seamless railway track laying measurement and comprises a base, a laser transmitter is arranged above the base and connected with the base through a supporting and leveling assembly, transverse positioning arms are symmetrically arranged in an inner cavity of the base in a sliding manner, and the transverse positioning arms are connected with the base through supporting and leveling assemblies. Guide assemblies are arranged between the transverse positioning arms and the inner wall of the base, a positioning driving mechanism for driving the transverse positioning arms to abut against sleepers on the two sides is arranged in an inner cavity of the base, and the two transverse positioning arms are driven by the positioning mechanism to slide in the mode of being attached to the inner wall of the base in an opposite or back-to-back mode. The two transverse positioning arms are clamped between the two sleepers correspondingly, so that the position of the base is fixed, the distance between the two transverse positioning arms is adjusted according to the distance between the sleepers, and the sleeper fixing device can be suitable for fixing at different distances.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless railway track laying measurement, in particular to a seamless line displacement measuring device for high-speed railway rails. Background Art

[0002] High-speed railway, abbreviated as HSR, refers to a railway system with high design standards that can enable trains to travel safely and at high speeds. When laying tracks on a new seamless railway, the rails need to be locked only when the tracks are stretched evenly and the track temperature is within the locked track temperature range. In order to monitor whether the track is stretched evenly at any time, it is often necessary to monitor the stretching conditions of various points on the track within a range of 1,000 or 1,500 meters.

[0003] Related technology (publication number: CN216846168U) discloses a high-speed railway ballastless track displacement monitoring device. The disclosed technical solution is: by setting a displacement transmission rod and obtaining the displacement distance through a displacement sensor, the device uses the properties of triangles to amplify the actual displacement distance, and calculates the actual displacement amount according to the proportional relationship between the two groups of triangles according to the algorithm, which can clearly show the displacement deformation, facilitate daily inspections, and effectively improve work efficiency.

[0004] In the above-mentioned disclosed technical solutions, the following problems were found in the related technologies: In the existing technologies, magnetic scale detection technology and rope distance measurement technology are often used to measure the displacement of rails. Since the device for detecting the displacement of rails has poor vibration resistance, the detected data has low accuracy. In response to this, we proposed a new type of seamless line displacement measurement device for high-speed rails.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background technology section of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. In order to solve the problem of measuring the stretching of each track point in the prior art, this utility model provides a high-speed rail seamless track displacement measurement device, which uses a stretching point measurement mechanism combined with a monitoring point accurate positioning adjustment mechanism to improve the accuracy of the monitoring results. The specific technical solution is as follows:

[0007] A seamless line displacement measuring device for high-speed railway rails comprises a base, a laser emitter is arranged above the base, and the laser emitter and the base are connected via a support and leveling assembly, a transverse positioning arm is symmetrically slidably arranged in the inner cavity of the base, a guide assembly is arranged between the transverse positioning arm and the inner wall of the base, and a positioning drive mechanism is provided in the inner cavity of the base for driving the transverse positioning arm to press against the sleepers on both sides.

[0008] In the above technical solution, the support and leveling assembly includes a base frame fixedly mounted on the top of the base, a top frame is rotatably provided on the top of the base frame, and the laser emitter is provided on the top of the top frame, a distance compensation slide rail is provided on the bottom of the top frame, a slide seat is sleeved on the outside of the distance compensation slide rail, a leveling screw is threaded on the top of the base frame, and the leveling screw and the slide seat are connected through a universal joint assembly.

[0009] The universal joint assembly includes a first universal seat and a first steering member, wherein the first universal seat is arranged at the bottom of the outer wall of the slide seat, the first steering member is arranged at the top end of the leveling screw, and the first universal seat is sleeved on the outside of the first steering member.

[0010] The support and leveling assembly includes a bottom frame fixedly mounted on the top of the base, a top frame is arranged above the bottom frame, and the top frame and the bottom frame are connected through a universal leveling assembly, and the laser emitter is arranged on the top of the top frame.

[0011] The universal leveling assembly includes a second steering member arranged on the top of the base frame, a second universal seat corresponding to the second steering member is provided at the bottom of the top frame, deformation grooves are uniformly opened along the edge of the bottom of the second universal seat, the second universal seat is sleeved on the outside of the second steering member, and a locking seat is threadedly connected to the outer wall of the second universal seat.

[0012] The positioning drive mechanism includes a movable shaft rotatably arranged in the inner cavity of the base, and the movable shaft passes through the side wall of the base and extends to the outside. The outer wall of the movable shaft is sleeved with a gear located in the inner cavity of the base, and the opposite surfaces of the two lateral positioning arms are provided with racks, and the two racks are symmetrically engaged with the gears.

[0013] The guide assembly includes a guide seat embedded in the four corners of the inner wall of the base, a guide groove is provided on the side of the guide seat away from the inner wall of the base, a guide slider is provided on the side wall of the transverse positioning arm, and the guide slider is slidably embedded in the inner wall of the guide groove.

[0014] A level tube is provided on the base where the laser transmitter is located.

[0015] The side walls of the base are symmetrically fixed with longitudinal positioning arms.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the seamless track displacement measuring device for high-speed rails:

[0017] 1. Adjust the position of the laser emitter's beam by supporting the leveling assembly to ensure that the laser emitter's beam is parallel to the horizontal plane, thereby ensuring the accuracy of the laser beam hitting the waist of the rail and further ensuring the accuracy of the measurement results.

[0018] Second, the positioning mechanism drives the two transverse positioning arms to slide relative to or back to back against the inner wall of the fitting base. As the two transverse positioning arms move back to back, the two transverse positioning arms are respectively clamped between the two sleepers, thereby fixing the position of the base. The distance between the two transverse positioning arms is then adjusted according to the spacing between the sleepers, which can be suitable for fixation at different distances.

[0019] 3. In the positive line environment, turn the first knob to make the top frame drive the laser emitter on the surface to rotate through the universal joint assembly, so that the laser emitter rotates around the central axis, thereby leveling the emission beam of the laser emitter, and compensating the top distance of the leveling screw through the slide and the distance compensation slide rail, thereby ensuring the stability of the laser emitter leveling process.

[0020] 4. In the switch environment within the station, when leveling the laser transmitter, the universal leveling assembly is used to allow the top frame to drive the laser transmitter to swing in all directions with the central fulcrum, so that the laser transmitter can be leveled at the rail measurement position, thereby ensuring the accuracy of the measurement results.

[0021] 5. When fixing the base, turn the second knob so that the two lateral positioning arms respectively drive the positioning plates on the opposite sides to fit against the surface of the sleeper. At this time, the lateral positioning arms are kept in a stable position through the positioning locking mechanism, thereby ensuring the stability of the base and the accuracy of the laser transmitter measurement process.

[0022] 6. Through the clamping end corresponding to the slot and the elastic deformation of the elastic member, the positioning chuck can slide over the locking rod in sequence. When the two lateral positioning arms are adjusted to fit the sleeper surface, the conical end of the locking rod is clamped in the slot, thereby locking the position of the base.

[0023] 7. The base box is made of alloy aluminum to ensure sufficient strength while being light and easy to carry. The longitudinal positioning arm is made of insulating material to prevent the conductive situation that may occur during operation from affecting the normal use of the line. The longitudinal positioning arm is installed on the front of the instrument at a distance of 5mm from the two edges of the base to ensure that it is close to the bottom of the rail, thereby ensuring the stability of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a seamless track displacement measuring device for high-speed rails according to the present invention;

[0025] Figure 2 This is a cross-sectional view of the base structure of the utility model Figure 1 ;

[0026] Figure 3 This is a cross-sectional view of the base structure of the utility model Figure 2 ;

[0027] Figure 4 This is a schematic structural diagram of part 2 of Example 2 of the present utility model;

[0028] Figure 5 for Figure 4 Schematic diagram of the structural explosion;

[0029] Figure 6 for Figure 2 A local enlarged view of point A;

[0030] Figure 7 for Figure 3 A partial enlarged view of point B;

[0031] in, Figures 1 to 7 The correspondence between the figure marks and the component names is: 1-base, 2-bottom frame, 3-top frame, 4-laser emitter, 5-level tube, 6-longitudinal positioning arm, 7-lateral positioning arm, 8-guide slider, 9-guide seat, 10-movable shaft, 11-positioning plate, 12-guide groove, 13-second knob, 14-bracket, 16-connecting seat, 17-center axis, 18-rack, 22-gear, 24-locking seat, 25-second universal seat, 26-support column, 27-second steering member, 28-deformation groove, 33-distance compensation slide rail, 34-slide, 35-first knob, 36-first rotating member, 37-first universal seat, 38-inner threaded sleeve, 39-leveling screw. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The following is a combination of specific implementation cases and attached Figure 1-7 The present invention will be further described below, but the present invention is not limited to these embodiments. Example

[0034] A high-speed rail seamless line displacement measuring device includes a base 1, and a laser emitter 4 is provided above the base 1. The selection of the laser emitter is directly related to the reading accuracy of the instrument. If the laser emitter's light spot is smaller, the outline is clearer, and the more colorful and eye-catching it is, the easier it is to improve the reading accuracy. The type of laser emitter used in this measuring device is LM12G-650(40)CP, and its wavelength is a point-shaped color laser of 650 nanometers. The maximum output power is 40 MW, and because a point-shaped laser is used, the wavelength is very concentrated and very obvious within the entire measuring range, which is easy to observe. At the same time, the clarity of the edge of the light spot facilitates reading, thereby ensuring the reading accuracy. The laser emitter 4 is connected to the base 1 through a support and leveling component.

[0035] The support and leveling assembly adjusts the position of the laser beam emitted by laser emitter 4, ensuring that the beam is parallel to the horizontal plane. This ensures that the laser beam accurately strikes the waist of the rail, thereby ensuring the accuracy of the measurement results. Laser emitter 4 requires high power and strong brightness to ensure accurate readings during both daytime and nighttime operation, unaffected by sunlight and lighting equipment. The laser equipped with laser emitter 4 is required to be vertical, with the laser width controlled within 1mm and the displacement observation mark scale of 1mm to ensure accurate readings.

[0036] The inner cavity of the base 1 is symmetrically slidably provided with a transverse positioning arm 7, and a guide assembly is provided between the transverse positioning arm 7 and the inner wall of the base 1. The transverse positioning arm 7 is longer than 15 cm, ensuring that the front fixed arm can still closely contact the edge of the rail bottom when the distance between the rail bottom and the trackbed surface is too large due to curves or the height of the rail pad. This provides a high-precision installation position for the rail longitudinal displacement laser detector.

[0037] The inner cavity of the base 1 houses a positioning drive mechanism that drives the transverse positioning arms 7 against the rail sleepers on either side. Rail waist markers and markings are attached to the rail waist of the track, with a maximum scale range of ±5 cm and a minimum scale of 1 mm. The rail waist markings and scale standards provide additional readings for measuring rail movement. After measurement, a laser point can be projected onto the scale, and the maximum scale value at the laser point indicates the rail's creep movement.

[0038] The positioning mechanism drives the two transverse positioning arms 7 to slide relative to or opposite to each other against the inner wall of the base 1. As the two transverse positioning arms 7 move opposite to each other, they are respectively engaged between the two sleepers, thereby fixing the position of the base 1. The distance between the two transverse positioning arms 7 can be adjusted according to the spacing between the sleepers, which can be applied to fixation at different distances.

[0039] Among them, the support and leveling assembly includes a bottom frame 2 fixedly mounted on the top of the base 1, and a top frame 3 is rotatably provided on the top of the bottom frame 2. The bottom frame 2 is fixed to the upper surface of the base 1, and two mutually parallel brackets 14 are vertically fixed symmetrically at the front and back edges of the upper surface of the bottom frame 2. Bearings are embedded and installed symmetrically on the opposite surfaces between the two brackets 14, and the two ends of the central axis 17 are respectively embedded and installed inside the two bearings, so that the central axis 17 rotates between the two brackets 14. The connecting seat 16 is fixedly sleeved on the outside of the central axis 17 through a through hole opened in the center and passing through the inner cavity, and the bottom edge of the top frame 3 is fixed to the top of the outer wall of the connecting seat 16, so that the top frame 3 rotates on the bottom frame 2 with one side as the fulcrum.

[0040] The laser emitter 4 is arranged on the top of the top frame 3. The laser emitter 4 is fixed on the top of the base, and the base is fixed on the upper surface of the top frame 3, so that the laser emitter 4 is fixed on the upper surface of the top frame 3 through the base.

[0041] A distance compensation rail 33 is provided at the bottom of the top frame 3, and a slide 34 is sleeved onto the outside of the distance compensation rail 33. Both ends of the semi-annular distance compensation rail 33 are fixed to the bottom of the top frame 3. The slide 34 has a through hole on its surface that penetrates the inner cavity. The diameter and shape of the through hole correspond to the distance compensation rail 33, allowing the slide 34 to slide against the outer wall of the distance compensation rail 33.

[0042] A leveling screw 39 is threadedly mounted on the top of the base frame 2, and is connected to the slide 34 via a universal joint. An internally threaded sleeve 38 is vertically fixedly mounted on the top of the base frame 2, corresponding to the slide 34. Internal threads are provided on the top of the internally threaded sleeve 38, extending toward the center. The leveling screw 39 also has external threads on its outer wall, near the top, extending toward the center, threading the leveling screw 39 into the internally threaded sleeve 38. The universal joint provides a flexible connection between the slide 34 and the leveling screw 39. A first knob 35 is fixedly mounted on the outer wall of the leveling screw 39, near the top, through a central mounting hole.

[0043] In a normal line environment, when adjusting the horizontal position of laser emitter 4, the first knob 35 is rotated, causing it to rotate and move the leveling screw 39 in the vertical direction. The universal joint assembly causes the top frame 3 to rotate the laser emitter 4 on the surface, causing the laser emitter 4 to rotate about the central axis 17, thereby leveling the emitted beam of laser emitter 4. The distance between the top of the leveling screw 39 is compensated by the slide 34 and the distance compensation slide 33, thereby ensuring the stability of the laser emitter 4 leveling process.

[0044] It is worth noting that the universal joint assembly includes a first universal seat 37 and a first steering member 36. The first universal seat 37 is located at the bottom of the outer wall of the slide 34. The first steering member 36 is located at the top of the leveling screw 39, and the first universal seat 37 is sleeved on the outside of the first steering member 36. The first universal seat 37 is a spherical body larger than one-half, and a movable groove is defined at the bottom of the outer wall of the first universal seat 37.

[0045] The first steering member 36 is a spherical block, and the shape of the spherical block corresponds to the movable groove cavity, so that the first steering member 36 is embedded in the interior of the first universal seat 37 and slides against its inner wall. The spherical first rotating member 36 increases the degree of freedom of the rotation direction of the first universal seat 37, thereby ensuring the accuracy of the beam direction adjustment of the laser emitter 4.

[0046] Furthermore, the positioning drive mechanism includes a movable shaft 10 that is rotatably disposed within the inner cavity of the base 1 and extends through the sidewall of the base 1. A bearing is embedded in the inner wall of the base 1, with one end of the movable shaft 10 embedded within the bearing. The other end of the movable shaft 10 extends through the inner wall of the other side of the base 1 and extends to the outside. A bearing is embedded in a through-hole between the movable shaft 10 and the sidewall of the base 1, with the movable shaft 10 embedded within the bearing. A second knob 13 is securely mounted on the outer wall of the movable shaft 10 that extends outside the base 1.

[0047] The outer wall of the movable shaft 10 is sleeved with a gear 22 located in the inner cavity of the base 1. The gear 22 is fixedly sleeved on the outside of the movable shaft 10 through a mounting hole opened in the center and extending through the inner cavity, so that the gear 22 rotates with the movable shaft 10. Racks 18 are provided on the opposing surfaces of the two lateral positioning arms 7, and the two racks 18 symmetrically mesh with the gear 22. The two racks 18 are respectively fixed to the opposing surfaces of the two lateral positioning arms 7 at the upper and lower opposite positions of the gear 22, and the position of the two lateral positioning arms 7 through the guide assembly ensures that the two racks 18 simultaneously and symmetrically mesh with the gear 22.

[0048] When securing the base 1, place it between two railroad sleepers. Then, rotate the second knob 13, causing it to rotate the gear 22 via the movable shaft 10. This causes the racks 18 meshing with the gear 22 on the upper and lower sides to move the two transverse positioning arms 7 to the sides, causing the two transverse positioning arms 7 to respectively drive the positioning plates 11 on the opposite sides to contact the railroad sleeper surfaces. At this point, the positioning locking mechanism stabilizes the transverse positioning arms 7, ensuring the stability of the base 1 and, in turn, the accuracy of the laser transmitter 4 measurement process.

[0049] Furthermore, the guide assembly includes guide seats 9 embedded in the four corners of the inner wall of the base 1. The guide seats 9 are fixedly mounted at each of the four corners of the inner wall of the base 1, and a guide groove 12 is defined on the side of the guide groove 9 facing the inner wall of the base 1. A guide groove 12 is defined on the side of the guide seat 9 facing away from the inner wall of the base 1. A guide slider 8 is provided on the side wall of the transverse positioning arm 7, and the guide slider 8 slides into the inner wall of the guide groove 12. The guide slider 8 is fixedly mounted on both sides of the upper and lower transverse positioning arms 7, allowing the guide slider 8 to slide into the inner wall of the guide groove 12.

[0050] The sliding cooperation between the guide slider 8 and the guide groove 12 ensures the stability of the position adjustment process of the transverse positioning arm 7, avoids the position deviation of the transverse positioning arm 7, and thus ensures the stability of the position of the transverse positioning arm 7.

[0051] A level tube 5 is provided on the base where the laser emitter 4 is located. During the leveling process of the laser emitter 4 , the position of the level bubble in the level tube 5 is observed, making it more convenient to control the leveling position.

[0052] Longitudinal positioning arms 6 are symmetrically mounted on the side walls of the base 1. These two longitudinal positioning arms 6 are simultaneously attached to the surface of the base 1 facing the rail, and are positioned relatively parallel to each other. These two longitudinal positioning arms 6 ensure the position of the base 1. The base box is constructed of alloy aluminum, ensuring sufficient strength while remaining lightweight and easy to carry.

[0053] The longitudinal positioning arm 6 is made of insulating material to prevent the conductive situation that may occur during operation from affecting the normal use of the line. The longitudinal positioning arm 6 is installed on the front of the instrument at a distance of 5 mm from the two edges of the base 1 to ensure that it is close to the bottom of the rail, thereby ensuring the stability of the base 1.

[0054] This embodiment provides a high-speed rail seamless track displacement measuring device. The operating principle is as follows: first, the base 1 is placed between two sleepers, and then the second knob 13 is rotated, causing the second knob 13 to rotate the gear 22 via the movable shaft 10. The racks 18 on the upper and lower sides, which are meshed with the gear 22, respectively drive the two lateral positioning arms 7 to move to the sides, so that the two lateral positioning arms 7 respectively drive the positioning plates 11 on the opposite sides to fit the sleeper surface.

[0055] Then, the first knob 35 is rotated, causing the first knob 35 to rotate and move the leveling screw 39 in the vertical direction. The top frame 3 drives the laser emitter 4 on the surface to rotate through the universal joint assembly. The laser emitter 4 rotates around the central axis 17, thereby leveling the laser emitter 4's beam, and then measurement can be performed. Example

[0056] As attached Figure 4 and attached Figure 5 As shown: the support and leveling assembly includes a base frame 2 fixedly mounted on the top of the base 1, a top frame 3 is arranged above the base frame 2, and the top frame 3 and the base frame 2 are connected through a universal leveling assembly, and a laser emitter 4 is arranged on the top of the top frame 3.

[0057] In the switch environment within the station, when leveling the laser emitter 4, the universal leveling assembly allows the top frame 3 to drive the laser emitter 4 to swing in all directions with the central fulcrum, so that the laser emitter 4 can be leveled at the rail measurement position, thereby ensuring the accuracy of the measurement results.

[0058] The universal leveling assembly includes a second steering member 27 disposed on the top of the base frame 2, and a second universal seat 25 corresponding to the second steering member 27 is disposed at the bottom of the top frame 3. One end of a support column 26 is vertically fixedly mounted at the center of the top of the base frame 2, and the bottom of the outer wall of the spherical second steering member 27 is vertically fixed to the other end of the support column 26. The spherical second steering member 27 is fixed to the top of the base frame 2 by the support column 26. The top of the second universal seat 25 is vertically fixed to the center of the bottom of the top frame 3, and a spherical groove cavity is provided at the bottom of the second universal seat 25, and the spherical groove cavity corresponds to the spherical second steering member 27, so that the second steering member 27 can be movably embedded in the interior of the spherical groove cavity.

[0059] Deformation grooves 28 are evenly arranged along the circumference of the bottom edge of the second universal seat 25. Four deformation grooves 28 are arranged in sequence along the circumference of the bottom edge of the spherical groove cavity of the second universal seat 25. The four deformation grooves 28 allow the bottom edge of the second universal seat 25 to be deformed, and the four deformation grooves 28 allow the second steering member 27 to be embedded and installed inside the second universal seat 25.

[0060] The second universal seat 25 is sleeved on the outside of the second steering member 27, and the outer wall of the second universal seat 25 is threadedly connected to the locking seat 24. The outer wall of the second universal seat 25 is provided with an external thread from the bottom upward, and the inner wall of the locking seat 24 is provided with an internal thread corresponding to the external thread of the second universal seat 25.

[0061] When leveling the laser transmitter 4 in a station switch environment, the locking seat 24 is screwed on the outer wall of the second universal seat 25 and removed, and the second universal seat 25 is rotated outside the second deflection member 27. After the laser transmitter 4 is leveled, the locking seat 24 is screwed on the outer wall of the second universal seat 25 to lock the leveling direction of the laser transmitter 4, thereby ensuring the accuracy of the measurement results.

[0062] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown 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 device or element referred to 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.

[0063] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0064] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0065] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-speed rail seamless line displacement measuring device, comprising a base (1), characterized in that: A laser emitter (4) is provided above the base (1), and the laser emitter (4) is connected to the base (1) via a support and leveling assembly. A transverse positioning arm (7) is symmetrically slidably provided in the inner cavity of the base (1), and a guide assembly is provided between the transverse positioning arm (7) and the inner wall of the base (1). A positioning drive mechanism for driving the transverse positioning arm (7) to press against the rail sleepers on both sides is provided in the inner cavity of the base (1).

2. The high-speed rail seamless track displacement measuring device according to claim 1, characterized in that: The support and leveling assembly comprises a base frame (2) fixedly mounted on the top of the base (1); a top frame (3) is rotatably provided on the top of the base frame (2); the laser emitter (4) is provided on the top of the top frame (3); a distance compensation slide rail (33) is provided on the bottom of the top frame (3); a slide seat (34) is sleeved on the outside of the distance compensation slide rail (33); a leveling screw (39) is provided on the top thread of the base frame (2); and the leveling screw (39) and the slide seat (34) are connected via a universal joint assembly.

3. The high-speed rail seamless track displacement measuring device according to claim 2, characterized in that: The universal joint assembly includes a first universal seat (37) and a first steering member (36), wherein the first universal seat (37) is arranged at the bottom of the outer wall of the slide seat (34), the first steering member (36) is arranged at the top end of the leveling screw (39), and the first universal seat (37) is sleeved on the outside of the first steering member (36).

4. The high-speed rail seamless track displacement measuring device according to claim 1, characterized in that: The support and leveling assembly comprises a base frame (2) fixedly mounted on the top of the base (1); a top frame (3) is arranged above the base frame (2); the top frame (3) and the base frame (2) are connected via a universal leveling assembly; and the laser emitter (4) is arranged on the top of the top frame (3).

5. The high-speed rail seamless track displacement measuring device according to claim 4, characterized in that: The universal leveling assembly includes a second steering member (27) arranged on the top of the base frame (2), a second universal seat (25) corresponding to the second steering member (27) is arranged at the bottom of the top frame (3), a deformation groove (28) is uniformly opened along the edge of the bottom of the second universal seat (25), the second universal seat (25) is sleeved on the outside of the second steering member (27), and the outer wall of the second universal seat (25) is threadedly connected to a locking seat (24).

6. The high-speed railway rail seamless track displacement measuring device according to claim 1, characterized in that: The positioning drive mechanism includes a movable shaft (10) rotatably arranged in the inner cavity of the base (1), and the movable shaft (10) passes through the side wall of the base (1) and extends to the outside, and the outer wall of the movable shaft (10) is sleeved with a gear (22) located in the inner cavity of the base (1), and the opposite surfaces of the two lateral positioning arms (7) are provided with racks (18), and the two racks (18) are symmetrically meshed with the gear (22).

7. The high-speed rail seamless track displacement measuring device according to claim 1, characterized in that: The guide assembly includes a guide seat (9) embedded in the four corners of the inner wall of the base (1), a guide groove (12) is provided on the side of the guide seat (9) away from the inner wall of the base (1), and a guide slider (8) is provided on the side wall of the transverse positioning arm (7), and the guide slider (8) is slidably embedded in the inner wall of the guide groove (12).

8. The high-speed railway rail seamless track displacement measuring device according to claim 1, characterized in that: A level tube (5) is provided on the base where the laser emitter (4) is located.

9. The high-speed railway rail seamless track displacement measuring device according to claim 1, characterized in that: The side walls of the base (1) are symmetrically fixed with longitudinal positioning arms (6).

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