Road and bridge displacement detection device

Abstract

The invention provides a road and bridge displacement detection device, and relates to the technical field of surveying and mapping engineering, the road and bridge displacement detection device comprises a spectroscope, a reflective mirror and a sliding adjustment sheet, and the sliding adjustment sheet comprises a light-transmitting part and a reflective part. According to the invention, the spectroscope, the reflective mirror and the sliding adjusting sheet are designed, the sliding adjusting sheet comprises the light transmitting part and the reflective part, and the light transmitting part or the reflective part is controlled to be located between the spectroscope and the reflective mirror based on sliding of the sliding adjusting sheet, so that during use, emitted light beams generated by the laser source can be reflected based on a structure formed by the spectroscope and the reflective part; the device is used for assisting in judging whether the laser source and the spectroscope are on the same horizontal line (meeting the requirement of serving as a datum line), and can also form a light splitting structure based on the spectroscope, the reflector and the light transmitting part; a user judges whether the displacement of a measuring point exceeds the offset distance or not through the measuring light beam, so that rapid detection and judgment of the displacement of the road and the bridge are completed.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying and mapping engineering, and in particular to a road bridge displacement detection device. Background Art

[0002] In recent years, with the expansion of transportation infrastructure and the increase in service life, the demand for safety monitoring of road and bridge structures has become increasingly urgent. Displacement detection is a core parameter for assessing the health status of bridges, and its accurate detection is of great significance for preventing structural damage and ensuring traffic safety.

[0003] The line of sight method uses the line of sight of the theodolite between two fixed points as a reference line, measures the distance between the deformation observation point and the reference line, and determines the deviation value. The principle is to use the building axis or a fixed vertical plane parallel to the building axis as the reference plane. The horizontal displacement of a building is measured according to the line of sight method. Currently, the detection process mainly relies on human-assisted judgment. The judgment process is highly subjective, resulting in significant errors in the measurement results. Especially in long-distance measurements, small errors will be magnified, affecting the safe use of the bridge. To this end, the present invention provides a road bridge displacement detection device. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a road and bridge displacement detection device, which solves the problem that the line of sight method is used to measure the horizontal displacement of a building, which mainly relies on human assistance in judgment. The judgment process is highly subjective, resulting in obvious errors in the measurement results.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A road bridge displacement detection device, comprising: A beam splitter and a reflector, wherein the beam splitter and the reflector are arranged in parallel, and a sliding adjustment plate is slidably arranged between the beam splitter and the reflector; The sliding adjustment plate includes: a light-transmitting portion and a light-reflecting portion. Based on the sliding of the sliding adjustment plate, the light-transmitting portion or the light-reflecting portion is controlled to be located between the beam splitter and the reflector. The surface of the reflector facing the beam splitter is a mirror surface, and the surface of the reflecting portion facing the beam splitter is a mirror surface.

[0006] Preferably, it further comprises: a reference mirror, wherein the beam splitter, the reflector, and the sliding adjustment piece are installed inside the reference mirror; The reference mirror comprises: An annular outer frame, the inner side of which is fixedly connected to the main frame, the inner side of which is fixedly mounted an inner support frame, the inner side of which forms a rectangular frame, the outer side of which is fixedly mounted a first clamping frame, the first clamping frame being fixedly connected to the inner side of the rectangular frame, the outer side of which is fixedly mounted a second clamping frame, the second clamping frame being slidably engaged with the inner side of the rectangular frame; A suspension frame, wherein the suspension frame is arranged outside the beam splitter, and the bottom end of the suspension frame is fixedly connected to the second clamping frame; A multi-stage telescopic member, wherein the multi-stage telescopic member is fixedly connected to the inner top of the rectangular frame, and the bottom telescopic end of the multi-stage telescopic member is fixedly connected to the top end of the suspension frame; A sliding substrate, the sliding substrate is located between the beam splitter and the reflector, and the sliding substrate and the rectangular frame are in transverse sliding cooperation, and the sliding adjustment piece is provided on the sliding substrate; A linear drive mechanism is installed on the outside of the rectangular frame and is used to drive the sliding substrate to slide.

[0007] Preferably, the linear drive mechanism includes: A driving plate, one end of which is fixedly connected to the sliding base plate, and a threaded seat is fixedly mounted on the top of the driving plate; a threaded rod, the threaded rod being threadably engaged with the threaded seat; A first motor and a gear box are fixedly mounted on the outer side of the rectangular frame, and the output end of the first motor is transmission-connected to the input end of the gear box, and the output end of the gear box is transmission-connected to one end of the threaded rod.

[0008] Preferably, a first transparent plate is fixedly mounted on the first side surface of the annular outer frame, a back panel and a second transparent plate are fixedly mounted on the second side surface of the annular outer frame, and the back panel is provided with a rectangular opening corresponding to the rectangular frame.

[0009] Preferably, it also includes: A support member, the support member includes a main rod body, a threaded connection end is provided at the bottom end of the main rod body, and a rotating connection head is provided at the top end of the main rod body; The support base comprises: a bottom bracket, the bottom end of the bottom bracket is fixedly connected to a connecting tube, the connecting tube is rotatably matched with a rotating connector, and both sides of the bottom bracket are fixedly connected to side frames extending upward; The outer side of the annular outer frame is provided with an annular opening, and the inner side of the side frame is fixedly connected with a side gear train corresponding to the annular opening; The inner side of the base is fixedly connected with a synchronous wheel driving system for driving the annular outer frame to rotate.

[0010] Preferably, a pressure wheel system is fixedly installed on the top of each of the two side frames; The pressure wheel system includes: A base, the base being fixedly mounted to the top of the side frame, and the top of the base being provided with an ear seat; An L-shaped plate frame, wherein the corner of the L-shaped plate frame is rotatably mounted on the inner side of the ear seat through a rotating shaft, and the long plate of the L-shaped plate frame is located above the side wheel system, a spring is installed between the bottom surface of the long plate of the L-shaped plate frame and the top of the base, and a pressure wheel is fixedly installed on the bottom surface of the long plate of the L-shaped plate frame.

[0011] Preferably, the short plate of the L-shaped plate frame forms an operating portion.

[0012] Preferably, the synchronous wheel drive system includes: Two sets of first guide wheels and two sets of second guide wheels are installed on the inner side of the base, the two sets of first guide wheels and the two sets of second guide wheels form an isosceles trapezoidal distribution, and the first guide wheels are located above the second guide wheels, and the spacing between the two sets of first guide wheels is greater than the spacing between the two sets of second guide wheels; A driving wheel, the driving wheel being mounted on the top of the base; Transmission flat belts are arranged on the outer sides of the two groups of first guide wheels and the two groups of second guide wheels and above the driving wheels.

[0013] Preferably, a toothed portion / anti-slip portion is provided on the outer side of the transmission flat belt.

[0014] Preferably, the transmission flat belt is an elastic belt, and the width of the transmission flat belt corresponds to the width of the annular opening outside the annular outer frame.

[0015] The present invention provides a road bridge displacement detection device. It has the following beneficial effects: The present invention designs a beam splitter, a reflector and a sliding adjustment plate. The sliding adjustment plate includes a light-transmitting portion and a light-reflecting portion. Based on the sliding of the sliding adjustment plate, the light-transmitting portion or the light-reflecting portion is controlled to be located between the beam splitter and the reflector. When in use, the structure formed by the beam splitter and the light-reflecting portion can reflect the emission light beam generated by the laser source to assist in determining whether the laser source and the beam splitter are on the same horizontal line (meeting the requirement of serving as a reference line). The beam splitter, the reflector and the light-transmitting portion can also form a light-splitting structure to divide the emission light beam generated by the laser source into a reference light beam and a measurement light beam. The user uses the measurement light beam to determine whether the displacement of the measurement point exceeds the offset distance, thereby completing rapid detection and judgment of the displacement of the road bridge.

[0016] The present invention designs a reference mirror for mounting a beam splitter, a reflector and a sliding adjustment plate. The reference mirror comprises: an annular outer frame, a main frame, a suspension frame, a multi-stage telescopic member, a sliding base plate and a linear drive mechanism. When in use, the suspension frame can be driven to slide up and down by controlling the multi-stage telescopic member, thereby driving the second clamping frame and the reflector to slide up and down, so as to adjust the distance between the beam splitter and the reflector, that is, to adjust the offset distance, thereby adapting to different specification requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a road bridge displacement detection device proposed by the present invention; Figure 2 This is a front view of a road bridge displacement detection device proposed by the present invention; Figure 3 This is a top view of a road bridge displacement detection device proposed by the present invention; Figure 4 This is a side view of a road bridge displacement detection device proposed by the present invention; Figure 5 A three-dimensional diagram of a support frame of a road and bridge displacement detection device proposed by the present invention; Figure 6 for Figure 5 A partial enlarged view of the middle point; Figure 7 This is an exploded view of a reference mirror of a road and bridge displacement detection device proposed by the present invention; Figure 8 This is a three-dimensional schematic diagram of the main frame of a road and bridge displacement detection device proposed by the present invention; Figure 9 This is a schematic diagram of the positions of a spectrometer, a reflector, and a sliding adjustment plate of a road bridge displacement detection device proposed by the present invention; Figure 10 This is a diagram showing the principle of a road bridge displacement detection device proposed by the present invention.

[0018] Among them, 1. Beam splitter; 2. Reflector; 3. Sliding adjustment plate; 301. Translucent part; 302. Reflective part; 4. Support member; 401. Main rod body; 402. Threaded connection end; 403. Rotating connector; 5. Support base; 501. Bottom bracket; 501a. Side frame; 502. Connecting tube; 503. Pinch wheel system; 503a. Base; 503b. L-shaped plate frame; 503c. Spring; 503d. Pinch wheel member; 504. Synchronous wheel drive system; 504a. First guide wheel; 504b. Second guide wheel; 504c. Transmission flat belt; 504d. Drive wheel; 505, side gear train; 6, reference mirror; 601, annular outer frame; 602, main frame; 603, first transparent plate; 604, back plate; 605, second transparent plate; 606, inner support frame; 607, sliding base plate; 608, drive plate; 609, threaded seat; 6010, threaded rod; 6011, gear box; 6012, first motor; 6013, first clamping frame; 6014, second clamping frame; 6015, suspension frame; 6016, multi-stage telescopic member; a, laser source; b, emission beam; c, reference beam; d, measurement beam; L, offset distance. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0020] Example 1 like Figures 1-10 As shown, an embodiment of the present invention provides a road bridge displacement detection device for use as an auxiliary reference in the road bridge displacement mapping and detection process, which specifically includes: a spectrometer 1, a reflector 2 and a sliding adjustment plate 3.

[0021] like Figure 10 As shown in the figure, the beam splitter 1 and the reflector 2 are arranged in parallel, and a sliding adjustment plate 3 is slidably arranged between the beam splitter 1 and the reflector 2. The sliding adjustment plate 3 includes: a light-transmitting portion 301 and a light-reflecting portion 302. Based on the sliding of the sliding adjustment plate 3, the light-transmitting portion 301 or the light-reflecting portion 302 is controlled to be located between the beam splitter 1 and the reflector 2, and the surface of the reflector 2 facing the beam splitter 1 is designed to be a mirror surface, and the surface of the light-reflecting portion 302 facing the beam splitter 1 is designed to be a mirror surface.

[0022] The spectroscope 1 is preferably formed by vacuum evaporation of a multilayer dielectric film with 50% transmittance and 50% reflectivity, which has good spectroscopic stability and less light loss.

[0023] Before conducting road and bridge displacement mapping and detection, it is necessary to position the laser source a (laser source a uses the laser emitted by the total station, of course, it is not limited to the use of the total station here). The user slides and adjusts the position of the sliding adjustment plate 3 so that the reflective part 302 is located below the spectroscope 1. The laser source a generates an emission beam b, and the emission beam b is irradiated on the spectroscope 1. The spectroscope 1 reflects part of the laser downward. The laser beam irradiated on the reflective part 302 is reflected again through the spectroscope 1. The spectroscope 1 reflects the laser beam reflected from the reflective part 302 twice to form a retroreflected light parallel to the emission beam b and in the opposite direction. Based on whether the retroreflected light can illuminate At the emission position on laser source a, determine whether the laser source a and the spectroscope are on the same horizontal line. If the two are on the same horizontal line, the emitted light beam b can be used as the reference line required for the line of sight method measurement; the user slides and adjusts the sliding adjustment plate 3 again to make the light-transmitting portion 301 located between the spectroscope 1 and the reflector 2. The optical fiber is reflected downward through the spectroscope 1 and passes through the light-transmitting portion 301. After reflection by the reflector 2, it forms a measuring light beam d parallel to the emitted light beam b. The emitted light beam b also forms a reference light beam c when it passes through the spectroscope 1. The user uses the measuring light beam d to determine whether the displacement of the measuring point exceeds the offset distance L (the maximum allowable displacement of the road and bridge).

[0024] In one embodiment, a reference mirror 6 is further designed, and the beam splitter 1 , the reflector 2 , and the sliding adjustment plate 3 are installed inside the reference mirror 6 .

[0025] Specifically, the reference mirror 6 includes: an annular outer frame 601, a main frame 602, a suspension frame 6015, a multi-stage telescopic member 6016, a sliding base plate 607 and a linear drive mechanism.

[0026] The inner side of the annular outer frame 601 is fixedly connected to the main frame 602. The outer contour of the main frame 602 is annular. The inner side of the main frame 602 is fixedly installed with an inner support frame 606. The inner support frame 606 is a bracket structure, which mainly includes a rectangular frame and side supports located on both sides of the rectangular frame. The inner side of the inner support frame 606 forms a rectangular frame, which is used to install the spectroscope 1, the reflector 2, and the sliding adjustment piece 3. The outer side of the spectroscope 1 is fixedly installed with a first clamping frame 6013. The first clamping frame 6013 is fixedly connected to the inner side of the rectangular frame. Specifically, the first clamping frame The holder 6013 and the inner side of the rectangular frame are designed to slide together, and a limiting nail is designed to fix the first clamping frame 6013 and the rectangular frame together. The outer side of the reflector 2 is fixedly installed with a second clamping frame 6014, and the second clamping frame 6014 slides with the inner side of the rectangular frame. The second clamping frame 6014 and the first clamping frame 6013 share a slideway. When the second clamping frame 6014 and the first clamping frame 6013 are slidably adjusted, the parallel relationship between the two will not change, that is, the beam splitter 1 and the reflector are always kept parallel. The mirror 2 is parallel to the light splitter 1, and the suspension frame 6015 is set on the outside of the light splitter 1, and the bottom end of the suspension frame 6015 is fixedly connected to the second clamping frame 6014, the multi-stage telescopic member 6016 is fixedly connected to the inner top of the rectangular frame, and the bottom telescopic end of the multi-stage telescopic member 6016 is fixedly connected to the top of the suspension frame 6015. When in use, the suspension frame 6015 can be driven to slide up and down by controlling the multi-stage telescopic member 6016, thereby driving the second clamping frame 6014 and the reflector 2 to slide up and down, so as to adjust the light splitter 1 and the reflector. 2, that is, the offset distance L is adjusted, the sliding substrate 607 is located between the beam splitter 1 and the reflector 2, and the sliding substrate 607 slides with the rectangular frame in a transverse direction, the sliding adjustment piece 3 is provided on the sliding substrate 607, and the linear drive mechanism is installed on the outside of the rectangular frame, and the linear drive mechanism is used to drive the sliding substrate 607 to slide. The linear drive mechanism drives the sliding substrate 607 to slide, thereby controlling the position change of the sliding adjustment piece 3, so that the light-transmitting portion 301 or the light-reflecting portion 302 is located between the beam splitter 1 and the reflector 2.

[0027] In one embodiment, the linear drive mechanism includes: a drive plate 608 , a threaded rod 6010 , a first motor 6012 , and a gear box 6011 .

[0028] One end of the driving plate 608 is fixedly connected to the sliding base plate 607, and a threaded seat 609 is fixedly installed on the top of the driving plate 608. The threaded rod 6010 is threadedly matched with the threaded seat 609. The first motor 6012 and the gear box 6011 are both fixedly installed on the outer side of the rectangular frame, and the output end of the first motor 6012 is transmission-connected to the input end of the gear box 6011. The output end of the gear box 6011 is transmission-connected to one end of the threaded rod 6010. The first motor 6012 selects a servo motor with feedback, and the gear box 6011 selects a reduction gear box. For example, the gear box 6011 has a group of mutually meshing bevel gears inside, which are responsible for transmission while also adjusting the direction of transmission.

[0029] When in use, the power system composed of the first motor 6012 and the gear box 6011 drives the threaded rod 6010 to rotate, and the threaded rod 6010 is threadedly engaged with the threaded seat 609, thereby driving the threaded seat 609 to slide along the axial direction of the threaded rod 6010, and then driving the drive plate 608 to move in a straight line along the axial direction of the threaded rod 6010, thereby driving the sliding base plate 607 to slide.

[0030] In one embodiment, a first transparent plate 603 is fixedly mounted on a first side of the annular outer frame 601 , and a back plate 604 and a second transparent plate 605 are fixedly mounted on a second side of the annular outer frame 601 . The back plate 604 has a rectangular opening corresponding to the rectangular frame.

[0031] The first transparent plate 603 and the second transparent plate 605 are designed to protect the annular outer frame 601 and the various structural parts installed inside the annular outer frame 601. A back plate 604 is designed. The back plate 604 is made of aluminum alloy by turning and milling to ensure the stability of the overall structure of the reference mirror 6, especially when encountering external forces, to prevent the reference mirror 6 from deformation. In one embodiment, a support member 4 and a support base 5 are also designed. Generally, before building roads and bridges, a reference point needs to be constructed. The support member 4 and the support base 5 are installed at the reference point position, and then the reference mirror 6 is installed on the support base 5 for use.

[0032] The support member 4 includes a main rod body 401, and a threaded connection end 402 is provided at the bottom end of the main rod body 401. The threaded connection end 402 cooperates with the threaded head reserved at the reference point position to achieve quick installation together. The top end of the main rod body 401 is provided with a rotating connection head 403, and the rotating connection head 403 is used to install the support base 5.

[0033] The supporting base 5 includes: a bottom bracket 501, the bottom end of the bottom bracket 501 is fixedly connected to a connecting tube 502, the connecting tube 502 rotates with the rotating connecting head 403, and the two sides of the bottom bracket 501 are fixedly connected to the side frames 501a extending upward, and the outer side of the annular outer frame 601 is provided with an annular opening, and the inner side of the side frame 501a is fixedly connected to the side wheel system 505 corresponding to the annular opening, and the annular outer frame 601 is supported by the side wheel system 505, and the rotatable nature of the side wheel system 505 facilitates the rotation of the annular outer frame 601, and the inner side of the bottom bracket 501 is fixedly connected to a synchronous wheel drive system 504 for driving the annular outer frame 601 to rotate.

[0034] When in use, the support base 5 is installed on the top of the support member 4, and the bottom end of the support member 4 is installed together with the reserved threaded head at the reference point position, and then the reference mirror 6 is installed on the support base 5 for use. After the above-mentioned positioning of the emission light beam b, the user can drive the reference mirror 6 to rotate through the synchronous wheel drive system 504 during subsequent use. The center of rotation should correspond to the position of the emission light beam b. During the rotation, the position of the reference light beam c remains unchanged, and the measuring light beam d rotates along the circumference. This can also be applied in the process of road and bridge inspections that deal with some non-vertical plane / horizontal plane displacements.

[0035] In one embodiment, a pressure wheel system 503 is fixedly installed on the top of each of the two side frames 501 a . The pressure wheel system 503 is used to ensure the stability of the reference mirror 6 when it is installed inside the support base 5 .

[0036] The pressure wheel system 503 includes a base 503a, an L-shaped plate frame 503b, a spring 503c and a pressure wheel member 503d.

[0037] The base 503a is fixedly installed on the top of the side frame 501a, and an ear seat is provided on the top of the base 503a. The corner of the L-shaped plate frame 503b is rotatably installed on the inner side of the ear seat through a rotating shaft, and the long plate of the L-shaped plate frame 503b is located above the side wheel system 505. A spring 503c is installed between the bottom surface of the long plate of the L-shaped plate frame 503b and the top of the base 503a. A pressure wheel member 503d is fixedly installed on the bottom surface of the long plate of the L-shaped plate frame 503b. Under the action of the spring 503c, the long plate of the L-shaped plate frame 503b has a tendency to tilt inward, which drives the pressure wheel member 503d to be stably stuck in the annular opening on the outside of the annular outer frame 601, so as to ensure the stability of the annular outer frame 601 during rotation.

[0038] In one embodiment, the short plate of the L-shaped frame 503b forms an operating portion, so that the user can press the short plate of the L-shaped frame 503b to flip the L-shaped frame 503b outward when installing the reference mirror 6, thereby facilitating the installation of the reference mirror 6.

[0039] In one embodiment, the synchronous wheel drive system 504 includes: two sets of first guide wheels 504a and two sets of second guide wheels 504d installed on the inner side of the base 501, a driving wheel 504d and a transmission flat belt 504c.

[0040] Two groups of first guide wheels 504a and two groups of second guide wheels 504d are installed on the inner side of the base 501, and the two groups of first guide wheels 504a and the two groups of second guide wheels 504d form an isosceles trapezoidal distribution, that is, the two groups of first guide wheels 504a and the two groups of second guide wheels 504d are distributed at the four corners of the isosceles trapezoid, and the first guide wheels 504a are located above the second guide wheels 504d, and the spacing between the two groups of first guide wheels 504a is greater than the spacing between the two groups of second guide wheels 504d, forming an isosceles trapezoid as an inverted isosceles terrain, with the upper part being larger and corresponding to the annular opening on the outer side of the annular outer frame 601, and the driving wheel 504d is installed on the top of the base 501, and a transmission flat belt 504c is provided on the outer side of the two groups of first guide wheels 504a and the two groups of second guide wheels 504d and above the driving wheel 504d.

[0041] When in use, the driving wheel 504d drives the transmission flat belt 504c to rotate, thereby driving the two sets of first guide wheels 504a and the two sets of second guide wheels 504d to rotate as well, and the transmission flat belt 504c drives the reference mirror 6 to rotate.

[0042] In one embodiment, a toothed portion / anti-slip portion is disposed on the outer side of the transmission belt 504 c to reduce slippage between the transmission belt 504 c and the driving wheel 504 d , and also to reduce slippage between the transmission belt 504 c and the reference mirror 6 .

[0043] In one embodiment, the transmission flat belt 504c is an elastic belt, and the width of the transmission flat belt 504c corresponds to the width of the annular opening outside the annular outer frame 601. The elastic design can ensure that the reference mirror 6 and the transmission flat belt 504c are in close contact.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A road bridge displacement detection device, characterized in that: include: A beam splitter (1) and a reflector (2), wherein the beam splitter (1) and the reflector (2) are arranged in parallel, and a sliding adjustment plate (3) is slidably arranged between the beam splitter (1) and the reflector (2); The sliding adjustment plate (3) comprises: a light-transmitting portion (301) and a light-reflecting portion (302); based on the sliding of the sliding adjustment plate (3), the light-transmitting portion (301) or the light-reflecting portion (302) is controlled to be located between the beam splitter (1) and the reflector (2); The surface of the reflector (2) facing the beam splitter (1) is a mirror surface, and the surface of the reflective portion (302) facing the beam splitter (1) is a mirror surface.

2. A road bridge displacement detection device according to claim 1, characterized in that: Also includes: A reference mirror (6), wherein the beam splitter (1), the reflector (2), and the sliding adjustment plate (3) are installed inside the reference mirror (6); The reference mirror (6) comprises: An annular outer frame (601), the inner side of the annular outer frame (601) is fixedly connected to a main frame (602), the inner side of the main frame (602) is fixedly installed with an inner support frame (606), the inner side of the inner support frame (606) forms a rectangular frame, the outer side of the spectrometer (1) is fixedly installed with a first clamping frame (6013), the first clamping frame (6013) is fixedly connected to the inner side of the rectangular frame, the outer side of the reflector (2) is fixedly installed with a second clamping frame (6014), the second clamping frame (6014) is slidably matched with the inner side of the rectangular frame; A suspension frame (6015), wherein the suspension frame (6015) is arranged outside the spectroscope (1), and the bottom end of the suspension frame (6015) is fixedly connected to the second clamping frame (6014); A multi-stage telescopic member (6016), wherein the multi-stage telescopic member (6016) is fixedly connected to the inner top of the rectangular frame, and the bottom telescopic end of the multi-stage telescopic member (6016) is fixedly connected to the top of the suspension frame (6015); A sliding substrate (607), the sliding substrate (607) is located between the beam splitter (1) and the reflector (2), and the sliding substrate (607) is in transverse sliding engagement with the rectangular frame, and the sliding adjustment piece (3) is provided on the sliding substrate (607); A linear drive mechanism is installed outside the rectangular frame, and the linear drive mechanism is used to drive the sliding substrate (607) to slide.

3. A road bridge displacement detection device according to claim 2, characterized in that: The linear drive mechanism comprises: A driving plate (608), one end of the driving plate (608) is fixedly connected to the sliding base plate (607), and a threaded seat (609) is fixedly mounted on the top of the driving plate (608); A threaded rod (6010), wherein the threaded rod (6010) is threadably engaged with the threaded seat (609); A first motor (6012) and a gear box (6011) are fixedly mounted on the outer side surface of the rectangular frame, and the output end of the first motor (6012) is transmission-connected to the input end of the gear box (6011), and the output end of the gear box (6011) is transmission-connected to one end of the threaded rod (6010).

4. The road bridge displacement detection device according to claim 3, characterized in that: A first transparent plate (603) is fixedly mounted on the first side of the annular outer frame (601), and a back plate (604) and a second transparent plate (605) are fixedly mounted on the second side of the annular outer frame (601). The back plate (604) is provided with a rectangular opening corresponding to the rectangular frame.

5. The road bridge displacement detection device according to claim 2, characterized in that: Also includes: A support member (4), the support member (4) comprising a main rod body (401), a threaded connection end (402) being provided at the bottom end of the main rod body (401), and a rotating connection head (403) being provided at the top end of the main rod body (401); A support base (5), the support base (5) comprising: a bottom bracket (501), a bottom end of the bottom bracket (501) being fixedly connected to a connecting tube (502), the connecting tube (502) being rotatably engaged with a rotating connector (403), and side frames (501a) extending upward being fixedly connected to both sides of the bottom bracket (501); An annular opening is provided on the outer side of the annular outer frame (601), and a side gear train (505) corresponding to the annular opening is fixedly connected to the inner side of the side frame (501a); A synchronous wheel drive system (504) for driving the annular outer frame (601) to rotate is fixedly connected to the inner side of the base (501).

6. The road bridge displacement detection device according to claim 5, characterized in that: A pressure wheel system (503) is fixedly mounted on the top ends of the two side frames (501a); The pressure wheel system (503) comprises: A base (503a), the base (503a) is fixedly mounted to the top of the side frame (501a), and an ear seat is provided on the top of the base (503a); An L-shaped plate frame (503b) is provided, wherein the corner of the L-shaped plate frame (503b) is rotatably mounted on the inner side of the ear seat via a rotating shaft, and the long plate of the L-shaped plate frame (503b) is located above the side wheel system (505), a spring (503c) is installed between the bottom surface of the long plate of the L-shaped plate frame (503b) and the top of the base (503a), and a pressure wheel component (503d) is fixedly mounted on the bottom surface of the long plate of the L-shaped plate frame (503b).

7. The road bridge displacement detection device according to claim 6, characterized in that: The short plate of the L-shaped plate frame (503b) forms an operating portion.

8. The road bridge displacement detection device according to claim 5, characterized in that: The synchronous wheel drive system (504) includes: Two groups of first guide wheels (504a) and two groups of second guide wheels (504d) are mounted on the inner side of the base (501), the two groups of first guide wheels (504a) and the two groups of second guide wheels (504d) forming an isosceles trapezoidal distribution, with the first guide wheels (504a) located above the second guide wheels (504d), and the spacing between the two groups of first guide wheels (504a) being greater than the spacing between the two groups of second guide wheels (504d); A driving wheel (504d), the driving wheel (504d) being mounted on the top of the base (501); Transmission flat belts (504c) are provided on the outsides of the two groups of first guide wheels (504a) and the two groups of second guide wheels (504d) and above the driving wheel (504d).

9. The road bridge displacement detection device according to claim 8, characterized in that: The outer side of the transmission flat belt (504c) is provided with a tooth portion / anti-slip portion.

10. The road bridge displacement detection device according to claim 8, characterized in that: The transmission flat belt (504c) is an elastic belt, and the width of the transmission flat belt (504c) corresponds to the width of the annular opening outside the annular outer frame (601).

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