Displacement measuring device of bridge structure

Abstract

The invention particularly relates to a displacement measuring device of a bridge structure, which comprises a movable frame, two bidirectional climbing rollers movably mounted in the middle of the movable frame, and a dual-drive assembly used for synchronously driving the two bidirectional climbing rollers to perform relative displacement or opposite displacement or same-side displacement, according to the two-way climbing roller piece, an upper rotating roller and a lower rotating roller are sleeved with rubber anti-skid crawler belts in a transmission mode, the contact face is increased, meanwhile, the left side and the right side of the two-way climbing roller piece can make contact with a bridge stand column, and it is ensured that the two-way climbing roller piece can cope with the use states in different environments; in addition, magnetic attraction rolling wheels arranged on the upper rotating roller and the lower rotating roller can magnetically attract the bridge stand column face and play a guiding role when the rubber anti-skid crawler belt climbs, the contact effect between the rubber anti-skid crawler belt and the bridge stand column is further improved, and the magnetic attraction effect can be combined with magnetic attraction balls arranged on the front face of the movable frame to form side face and front face magnetic guiding; and the bidirectional climbing roller is not easy to separate from the track or fall off during climbing.

Description

TECHNICAL FIELD

[0001] The application is particularly a displacement measuring device for bridge structure, and relates to the technical field of bridge measuring equipment. BACKGROUND

[0002] In the displacement detection of bridge structure, the existing measuring device mainly relies on contact type measuring equipment such as displacement meter and dial gauge. However, for the high-altitude areas such as the side surface of bridge column and the bottom of box girder, the traditional device relies on manual lifting operation. The measuring equipment lacks a fixed and stable top structure, and the manual operation is easily disturbed by wind force, personnel shaking and the like, and the use stability is poor. Moreover, an effective observation platform cannot be built in a certain narrow space, and it is difficult to adapt to complex spatial layout, and the displacement cannot be effectively detected and measured, and the overall use is inconvenient. Therefore, a displacement measuring device for bridge structure is needed to improve the above problems. SUMMARY

[0003] In view of the deficiencies of the prior art, the application aims to provide a displacement measuring device for bridge structure to solve the problems mentioned in the background.

[0004] In order to achieve the above-mentioned purpose, the application is implemented by the following technical scheme: a displacement measuring device for bridge structure, comprising a movable frame, two bidirectional climbing roller members movably installed in the middle of the movable frame, and a double-drive assembly for synchronously driving the two bidirectional climbing roller members to move in opposite directions or in the same direction; a plurality of magnetic ball are movably embedded on the front surface of the movable frame, and the magnetic ball is magnetically attracted and rolled on the front surface of the bridge column; an adjusting and measuring group for detecting and measuring the side surface of the bridge column or the bottom of the box girder is movably installed on the left and right sides of the movable frame; the bidirectional climbing roller member comprises a sliding plate, an upper rotating roller and a lower rotating roller which are rotatably installed on the front side of the sliding plate; a rotating motor for driving the rotation of the upper rotating roller is installed on the rear side of the sliding plate; a plurality of magnetic rollers for magnetic attraction and guidance on the surface of the bridge column are separately installed on the upper rotating roller and the lower rotating roller; a plurality of rubber anti-skid tracks are transmissionally arranged between the upper rotating roller and the lower rotating roller and are distributed staggered with the magnetic rollers, and the thickness of the rubber anti-skid track is greater than the diameter of the magnetic roller, so as to elastically adhere to the surface of the bridge column; a bidirectional pressing group is arranged on the sliding plate between the upper rotating roller and the lower rotating roller, and the bidirectional pressing group is in anti-skid contact with the surface of the bridge column; a cross rod is fixedly arranged on the front side of the sliding plate, and a plurality of first distance meters are transversely installed on the cross rod.

[0005] The further improved scheme is characterized in that the front side of the sliding plate is fixedly provided with a T-shaped plate, the two ends of the front side of the T-shaped plate are rotatably connected with the front ends of the upper rotating roller and the lower rotating roller respectively, and the bidirectional pressing assembly is arranged in the middle part of the T-shaped plate.

[0006] The further improved scheme is characterized in that the surface of the push plate is provided with a first stripy rubber sheet, and the first stripy rubber sheet abuts against the inner side of the rubber antiskid track.

[0007] The further improved scheme is characterized in that when the two bidirectional climbing roller pieces are clamped or pressed on the bridge column, the same side of the bidirectional climbing roller piece is driven to displace by the double-drive assembly, at this time, the bidirectional climbing roller piece keeps clamping or pressing on the bridge column, the whole movable frame is adjusted to displace left and right, and the adjustment and measurement assembly is adjusted to displace left and right to detect and measure the bottom of the box girder.

[0008] The further improved scheme is characterized in that the double-drive assembly comprises a first screw rod and a second screw rod rotatably arranged on the left side and the right side of the movable frame, the first screw rod and the second screw rod are respectively threaded through the sliding plates of the two bidirectional climbing roller pieces, the opposite sides of the first screw rod and the second screw rod are rotatably connected with a rotary connection assembly, and the left side and the right side of the movable frame are respectively provided with a first driving motor and a second driving motor for driving the first screw rod and the second screw rod to rotate.

[0009] The further improved scheme is characterized in that the rotary connection assembly comprises a first T-shaped rotary sleeve and a second T-shaped rotary sleeve connected by bolts and flanges, the inner side of the first T-shaped rotary sleeve is rotatably provided with a first shaft part, the first shaft part is fixedly connected with the first screw rod, and the inner side of the second T-shaped rotary sleeve is rotatably provided with a second shaft part, the second shaft part is fixedly connected with the second screw rod.

[0010] The further improved scheme is characterized in that the adjustment and measurement assembly comprises a rotary plate hinged to the front side of the movable frame, a plurality of second distance meters and a horizontal detector arranged on the upper side of the rotary plate, the rotary plate is hingedly provided with a rotary telescopic rod, the other end of the rotary telescopic rod is rotatably connected with the movable frame, the upper side of the rotary plate is longitudinally provided with a sliding longitudinal plate, the lower side of the rotary plate is provided with a longitudinal pushing telescopic rod for pushing the sliding longitudinal plate to slide forward and backward, and the second distance meters and the horizontal detector are arranged on the upper side of the sliding longitudinal plate.

[0011] The further improved scheme is characterized in that a plurality of rectangular guide rods are transversely arranged in the middle part of the sliding plate.

[0012] Further improved scheme, the movable frame is provided with a sliding groove on the upper and lower sides, and the sliding plate is provided with a sliding block on the upper and lower sides which is adapted to slide in the sliding groove.

[0013] Further improved scheme, the outer surface of the rubber anti-skid track is provided with anti-skid teeth, the upper rotating roller and the lower rotating roller are provided with a track driving wheel, and the inner surface of the rubber anti-skid track is provided with a driving tooth opening which is adapted to be connected with the track driving wheel.

[0014] By adopting the above technical scheme, the present application has the following advantages: The device is simple and flexible to use, and has multiple use states: first, the double-drive assembly provided on the movable frame can drive the two bidirectional climbing rollers to relatively displace to effectively clamp the two sides of the bridge column, and the first distance meter can detect and measure the two sides of the clamped bridge column when the bidirectional climbing rollers climb upward, until the climbing height, the adjustment measurement group detects and measures the bottom of the box girder; second, the double-drive assembly can drive the two bidirectional climbing rollers to displace in opposite directions, and the opposite displacement is tightly clamped on the opposite side of the two bridge columns, and the first distance meter can also be used to detect and measure the two sides of the clamped bridge column when the bidirectional climbing rollers climb upward; third, in the state that the two bidirectional climbing rollers clamp the two sides of the bridge column, the double-drive assembly can drive the two bidirectional climbing rollers to displace on the same side, and the two bidirectional climbing rollers can keep the clamped state to enable the movable frame to displace left and right, thereby synchronously adjusting the detection range of the two adjustment measurement groups moving left and right, and combining the longitudinal telescopic adjustment and the rotation adjustment of the horizontal angle of the adjustment measurement group, thereby greatly improving the detection range and use effect of the adjustment measurement group; The bidirectional climbing roller is provided with a rubber anti-skid track driven by the upper rotating roller and the lower rotating roller, which improves the contact surface and enables the left and right sides of the bidirectional climbing roller to contact the bridge column, to ensure that the above use states can be adapted to different environments; and the magnetic attraction roller provided on the upper rotating roller and the lower rotating roller can magnetically attract the surface of the bridge column and play a guiding role when the rubber anti-skid track climbs, further improving the contact effect with the bridge column, and the magnetic attraction effect can form a magnetic guide on the side and the front by combining the magnetic attraction ball provided on the front of the movable frame, so that the bidirectional climbing roller is not easy to deviate from the track or fall off when climbing, and the multidirectional rotation of the magnetic attraction ball can reduce friction and improve smoothness when the movable frame is raised and lowered, and can keep the magnetic attraction rolling contact with the bridge column when the movable frame is adjusted left and right, to ensure stable use. Meanwhile, in order to ensure that the bidirectional climbing roller can stably contact with the bridge column surface, the middle part of each rubber anti-skid track is pushed and jacked outward by the push plate of the bidirectional jacking group, so that the braking effect of the rubber anti-skid track can be realized, and the force applied to the rubber anti-skid track can be applied to the bridge column surface, so that the contact effect between them is greatly improved; and the push plate is provided with a protruding part and a second stripe rubber sheet, so as to simultaneously jacks up the bridge column surface in the form of multiple contact points, so as to improve the overall jacking effect, and greatly improve the use stability of the bidirectional climbing roller. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments thereof, read in conjunction with the accompanying drawings: Figure 1 It is a structural schematic diagram of the present application; Figure 2 It is a structural schematic diagram of the connection structure of the first screw rod and the second screw rod of the present application; Figure 3 It is a structural schematic diagram of the rotating connection assembly of the present application; Figure 4 It is a structural schematic diagram of the bidirectional climbing roller of the present application; Figure 5 It is a structural schematic diagram of the T-shaped plate of the present application; Figure 6 It is a structural schematic diagram of the bidirectional jacking group of the present application; Figure 7 It is a structural schematic diagram of the bidirectional climbing roller of the present application; Figure 8 It is a structural schematic diagram of the adjusting and measuring group of the present application; Figure 9 It is a use state diagram of the bidirectional climbing roller clamping both sides of the bridge column of the present application; Figure 10 It is a use state diagram of the left and right displacement of the movable frame of the present application; Figure 11 It is a use state diagram of the bidirectional climbing roller jacking on the opposite side of the two bridge columns of the present application; In the figure: active frame 1, magnetic attraction ball 10, sliding plate 2, bidirectional climbing roller 3, upper rotating roller 31, lower rotating roller 32, rotating motor 33, magnetic attraction roller 34, rubber anti-skid caterpillar track 35, anti-skid tooth pattern 351, T-shaped plate 36, bidirectional pressing group 37, bidirectional telescopic rod 370, push plate 371, protruding part 372, first striped rubber sheet 373, second striped rubber sheet 374, horizontal rod 4, first distance meter 41, adjusting and measuring group 5, rotating plate 51, rotating telescopic rod 52, sliding vertical plate 53, second distance meter 54, horizontal detector 55, vertical push telescopic rod 56, bidirectional driving assembly, first screw rod 61, second screw rod 62, rotating connecting assembly 63, first T-shaped rotating sleeve 631, second T-shaped rotating sleeve 632, first shaft part 633, second shaft part 634, first driving motor 64, second driving motor 65, sliding groove 7, sliding block 71, rectangular guide rod 8. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0017] As Figures 1-11As shown, the present invention provides a displacement measuring device for a bridge structure, including a movable frame 1, two bidirectional climbing rollers 3 movably installed in the middle of the movable frame 1, and a dual drive assembly for synchronously driving the two bidirectional climbing rollers 3 to relative displacement, opposite displacement, or same-side displacement. The dual drive assembly includes a first screw 61 and a second screw 62 rotatably installed on the left and right sides of the movable frame 1, respectively. The first screw 61 and the second screw 62 are respectively threaded through the sliding plates 2 of the two bidirectional climbing rollers 3. The left and right sides of the movable frame 1 are respectively equipped with first screws 61 and 62 for driving the first screw 61 and the second screw 62 to rotate. The first drive motor 64 and the second drive motor 65 drive the first screw 61 and the second screw 62 to rotate respectively, which can respectively drive the two bidirectional climbing rollers 3 to move relative, opposite, or on the same side, making it simple and flexible to use; a crossbar 4 is fixed on the front side of the sliding plate 2, and two first distance measuring devices 41 are installed laterally on the crossbar 4. Adjustable measuring groups 5 for detecting and measuring the sides of bridge columns or the bottom of box girders are movably installed on the left and right sides of the movable frame 1. Moreover, when the two bidirectional climbing rollers 3 are clamped or pressed against the bridge column, the bidirectional climbing is driven by the dual drive assembly. Roller 3 moves to the same side. At this time, the bidirectional climbing roller 3 remains clamped or pressed against the bridge column, allowing the entire movable frame 1 to adjust its displacement left and right. The adjustment and measurement group 5 adjusts its displacement left and right simultaneously to detect and measure the bottom of the box girder. The adjustment and measurement group 5 includes a rotating plate 51 hinged to the front of the movable frame 1, and multiple second distance measuring devices 54 and a level detector 55 located on the upper side of the rotating plate 51. There can be three or five second distance measuring devices 54. A rotating telescopic rod 52 is hinged to the end of the rotating plate 51. The other end of the rotating telescopic rod 52 is rotatably connected to the movable frame 1. A sliding longitudinal plate 53 is longitudinally installed on the upper side of the rotating plate 51. A longitudinal pusher rod 56 is installed on the lower side of the rotating plate 51 to push the sliding longitudinal plate 53 to slide back and forth. The second rangefinder 54 and the horizontal detector 55 are both installed on the upper side of the sliding longitudinal plate 53. The second rangefinder 54 can be partially installed vertically and partially installed horizontally. Therefore, by rotating the telescopic rod 52 to push the rotating plate 51 to rotate, the second rangefinder 54 on the sliding longitudinal plate 53 will rotate accordingly. Furthermore, by extending and retracting the longitudinal pusher rod 56 to push and pull the sliding longitudinal plate 53, each second rangefinder 54 can move back and forth to improve the front and rear detection range. This adjustment effect, combined with the left and right displacement of the movable frame 1, can greatly improve the range of use. To ensure stable rotation of the first screw 61 and the second screw 62 on the same axis and improve the support strength between them, a rotating connection assembly 63 is rotatably connected to the first screw 61 and the second screw 62 on opposite sides. The rotating connection assembly 63 includes a first T-shaped rotating sleeve 631 and a second T-shaped rotating sleeve 632 connected by two bolt flanges. The flange connection facilitates later disassembly and assembly. A first shaft portion 633 is rotatably provided inside the first T-shaped rotating sleeve 631, which is fixedly connected to the first screw 61. A second shaft portion 634 is rotatably provided inside the second T-shaped rotating sleeve 632, which is fixedly connected to the second screw 62. In this way, the first screw 61 can rotate within the first T-shaped rotating sleeve 631 through the first shaft portion 633, and the second screw 62 can be rotatably connected to the second T-shaped rotating sleeve 632 through the second shaft portion 634, forming an integral connection relationship between them, improving the driving stability and operational flexibility of the two bidirectional climbing rollers 3.

[0018] The bidirectional climbing roller component 3 includes a sliding plate 2 and an upper rotating roller 31 and a lower rotating roller 32 that are vertically distributed and rotatably installed on the front side of the sliding plate 2. A rotating motor 33 for driving the upper rotating roller 31 to rotate is installed on the rear side of the sliding plate 2. The upper rotating roller 31 and the lower rotating roller 32 are each equipped with three magnetic rollers 34 for magnetically guiding the bridge column surface. Two rubber anti-slip tracks 35 are sleeved between the upper rotating roller 31 and the lower rotating roller 32 and are staggered from the magnetic rollers 34. The thickness of the rubber anti-slip tracks 35 is greater than the diameter of the magnetic rollers 34. They can first elastically adhere to the surface of the bridge column and undergo compression deformation. This allows the magnetic rollers 34 to contact the bridge column simultaneously. That is, the combination of elastic anti-slip contact and magnetic rolling contact greatly improves the contact effect with the surface of the bridge column, which is beneficial to the upward climbing of the equipment. In a further improvement, a T-shaped plate 36 is fixedly installed on the front side of the sliding plate 2, and the two ends of the front side of the T-shaped plate 36 are rotatably connected to the front ends of the upper rotating roller 31 and the lower rotating roller 32, respectively. The T-shaped plate 36 serves as a central bearing plate, which can improve the installation stability of the upper rotating roller 31 and the lower rotating roller 32, allowing the two ends of the upper rotating roller 31 and the lower rotating roller 32 to form an integral part with the sliding plate 2, and both can bear the force.

[0019] In a further improvement, the sliding plate 2 between the upper rotating roller 31 and the lower rotating roller 32 is equipped with a bidirectional clamping assembly 37 that synchronously pushes outwards towards the middle of the rubber anti-slip track 35. This bidirectional clamping assembly 37 makes anti-slip contact with the surface of the bridge column, enhancing the stability of the equipment clamping or clamping the bridge column. Specifically, the bidirectional clamping assembly 37 is installed in the middle of the T-shaped plate 36. The bidirectional clamping assembly 37 includes two bidirectional telescopic rods 370 that are laterally installed through the middle of the T-shaped plate 36. Each of the two telescopic ends of the two bidirectional telescopic rods 370 is equipped with a push plate 371. Under the bidirectional pushing of the bidirectional telescopic rods 370, the push plate... 371 can simultaneously push each rubber anti-slip track 35 outward to tightly adhere to the surface of the bridge column, increasing the clamping force and simultaneously braking the rubber anti-slip track 35, greatly improving the contact force and anti-slip performance of the rubber anti-slip track 35, making the entire equipment more stable on the surface of the bridge column. The outer surface of the rubber anti-slip track 35 is also provided with anti-slip teeth 351, and the upper rotating roller 31 and the lower rotating roller 32 are equipped with track drive wheels. The inner surface of the rubber anti-slip track 35 is provided with transmission teeth that are adapted to connect with the track drive wheels. This can further prevent the rubber anti-slip track 35 from slipping and improve the transmission efficiency.

[0020] Furthermore, the upper push plate 371 is covered with a first striped rubber sheet 373, which abuts against the transmission teeth on the inner side of the rubber anti-slip track 35, thereby improving its elastic clamping and anti-slip braking effect. The push plate 371 is fixed with a plurality of protrusions 372 that are staggered from the rubber anti-slip track 35. Each protrusion 372 is covered with a second striped rubber sheet 374, which is in close contact with the surface of the bridge column through the second striped rubber sheet 374. While the push plate 371 brakes the rubber anti-slip track 35, the protrusions 372 can simultaneously clamp the surface of the bridge column through the second striped rubber sheet 374, further strengthening the clamping and clamping effect of the two bidirectional climbing rollers 3 on the bridge column.

[0021] In this embodiment, multiple magnetic balls 10 are movably embedded in the front surface of the movable frame 1, and are magnetically attracted to the front surface of the bridge column by the rolling of the magnetic balls 10. Therefore, when the two bidirectional climbing rollers 3 clamp the surface of the bridge column and climb upward, they can play a magnetic guiding role and reduce the friction of climbing. This front magnetic multi-directional rolling effect combined with the side magnetic rolling effect of the magnetic rollers 34 can greatly improve the stability and guiding role of the rubber anti-slip track 35 climbing up and down, so as to reduce the possibility of its deviation or falling off. At the same time, since the multiple magnetic balls 10 are omnidirectional rolling, they can also maintain magnetic rolling contact with the front surface of the bridge column when the movable frame 1 is adjusted left and right, so as to ensure its stability in use.

[0022] In order to improve the stability of the bidirectional climbing roller 3 in the left and right displacement of the movable frame 1, multiple rectangular guide rods 8 are installed horizontally in the middle of the movable frame 1, which are penetrated by the middle of the sliding plate 2. The movable frame 1 has grooves 7 on the upper and lower sides, and the sliding plate 2 has sliders 71 that are adapted to slide in the grooves 7 on the upper and lower sides. Through the multiple guides of the grooves 7, sliders 71 and rectangular guide rods 8, the movement stability between the movable frame 1 and the bidirectional climbing roller 3 can be guaranteed.

[0023] In a more specific embodiment, when in use, the present invention involves placing two bidirectional climbing rollers 3 on the left and right sides of the bridge column, respectively. The magnetic balls 10 embedded in the rotating frame 1 directly adhere to the front side of the bridge column. At this time, the dual-drive assembly operates, with the first drive motor 64 and the second drive motor 65 driving the first screw 61 and the second screw 62 to rotate. This causes the sliding plates 2 of the two bidirectional climbing rollers 3 to move stably relative to each other along the sliding groove 7 and the rectangular guide rod 8. This allows the sides of the rubber anti-slip tracks 35 of the two bidirectional climbing rollers 3 to first contact the sides of the bridge column. The rubber anti-slip tracks 35 undergo compression deformation under a certain clamping force until each magnetic roller 34 magnetically contacts the bridge column, thus completing the magnetic attraction between the equipment and the front and sides of the bridge column, as well as the elastic anti-slip clamping between the equipment and the sides of the bridge column. Then, the rotating motor 33 drives the upper rotating roller 31, which in turn drives the lower rotating roller 32 synchronously via the rubber anti-slip tracks 35, allowing the rubber... The anti-slip track 35 contacts the bridge column with its entire surface. When the rubber anti-slip track 35 rotates, it works in conjunction with the magnetic attraction of the magnetic roller 34 and the magnetic ball 10 to guide the entire equipment upward. During the upward movement, the first rangefinder 41 mounted on each side of the crossbar 4 can be activated to detect and measure both sides of the bridge column and use signals to feed the data back to the background for analysis until the entire equipment has climbed to the highest point and stopped. After stopping, the bidirectional clamping assembly 37 is activated, which pushes the push plate 371 and the protrusion 372 outward at both ends of the bidirectional telescopic rod 370. The push plate 371 pushes the middle of the rubber anti-slip track 35 outward through the first striped rubber sheet 373 to clamp the surface of the bridge column. At this time, it can brake the rubber anti-slip track 35 and improve the clamping effect between the rubber anti-slip track 35 and the bridge column. The protrusion 372 directly clamps the side of the bridge column through the second striped rubber sheet 374, which greatly improves the stability of the entire equipment on the bridge column. At this time, both the movable frame 1 and the adjustment measurement group 5 are located under the box girder. The second distance measuring device 54 of the adjustment measurement group 5 can detect the underside of the box girder. When the detection angle needs to be adjusted by rotation, the rotating plate 51 can be rotated by rotating the telescopic rod 52, causing the second distance measuring device 54 on the sliding longitudinal plate 53 to rotate accordingly. The telescopic push rod 56 can also push and pull the sliding longitudinal plate 53, allowing each second distance measuring device 54 to move back and forth, thus increasing the detection range. At the same time, the first drive motor 64 and the second drive motor 65 of the dual drive assembly can synchronously drive the first screw 61 and the second screw 62 to rotate, keeping the two bidirectional climbing rollers 3 clamped to both sides of the bridge column. The entire movable frame 1 can move to the left or right, synchronously adjusting the detection range of the two adjustment measurement groups 5, greatly improving the overall effectiveness of the equipment.

[0024] In addition, such as Figure 11 As shown, the two bidirectional climbing rollers 3 of this application can move in opposite directions under the drive of the first screw 61 and the second screw 62 of the dual drive assembly. The opposite displacement of the two bidirectional climbing rollers 3 can be used in environments where they are clamped to the opposite side of two spaced bridge columns. This also allows the first distance measuring device 41 to detect and measure both sides of the clamped bridge column when the bidirectional climbing rollers 3 are climbing upward, and the second distance measuring device 54 of the adjustment measuring group 5 to detect the box girder. All of these are within the scope of protection of this application.

[0025] It should be noted that the displacement measuring device for a bridge structure of the present invention mainly improves the above-mentioned structure. The functions, components and structures not mentioned can be implemented by using existing components and structures that can achieve the corresponding functions. For example, each telescopic rod can be used by existing pneumatic telescopic cylinders, hydraulic telescopic cylinders or electric push rods.

[0026] The above embodiments illustrate and describe the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A displacement measuring device for a bridge structure, characterized by Include: Active frame; Two bidirectional climbing roller members are movably installed in the middle of the active frame; It also includes a double drive assembly for synchronously driving the relative displacement or opposite displacement or same side displacement of the two bidirectional climbing roller members; The front surface of the active frame is movably embedded with a plurality of magnetic attraction balls, and is magnetically attracted to the front surface of the bridge column through the rolling of the magnetic attraction balls; Adjustable measuring groups are movably installed on the left and right sides of the active frame for detecting and measuring the side surface of the bridge column or the bottom of the box girder; The bidirectional climbing roller member includes a sliding plate, an upper rotating roller and a lower rotating roller distributed and rotatingly installed on the front side of the sliding plate, a rotating motor installed on the rear side of the sliding plate for driving the rotation of the upper rotating roller, a plurality of magnetic attraction rollers installed on the upper rotating roller and the lower rotating roller for magnetic attraction guiding on the surface of the bridge column, and a plurality of rubber anti-skid tracks transmissionally arranged between the upper rotating roller and the lower rotating roller and staggered with the magnetic attraction rollers, the thickness of the rubber anti-skid track being greater than the diameter of the magnetic attraction roller for elastically abutting on the surface of the bridge column; A bidirectional pressing assembly is arranged on the sliding plate between the upper rotating roller and the lower rotating roller for synchronously pressing the middle part of the rubber anti-skid track outward, and the bidirectional pressing assembly is in anti-skid contact with the surface of the bridge column; A cross rod is fixedly arranged on the front side of the sliding plate, and a plurality of first distance meters are transversely installed on the cross rod.

2. A bridge structure displacement measuring device according to claim 1, wherein A T-shaped plate is fixedly installed on the front side of the sliding plate, and the front ends of the upper rotating roller and the lower rotating roller are rotatably connected to the both ends of the front side of the T-shaped plate, and the bidirectional pressing assembly is installed on the middle part of the T-shaped plate. The bidirectional pressing assembly includes two bidirectional telescopic rods transversely penetratingly installed on the middle part of the T-shaped plate, and a push plate is installed on the telescopic end of the same side of the two bidirectional telescopic rods, the push plate synchronously pushes and presses each rubber anti-skid track outward to abut on the surface of the bridge column, and the rubber anti-skid track is braked.

3. A bridge structure displacement measuring device according to claim 2, wherein A first striped rubber sheet is attached to the surface of the push plate and abuts on the inner side of the rubber anti-skid track, and a plurality of protrusions are fixedly arranged on the push plate and staggered with the rubber anti-skid track, a second striped rubber sheet is attached to the surface of each protrusion and abuts on the surface of the bridge column.

4. The bridge structure displacement measuring device according to claim 1, wherein When the two bidirectional climbing roller members are clamped or pressed on the bridge column, the double drive assembly drives the same side displacement of the bidirectional climbing roller members, at this time the bidirectional climbing roller members remain clamped or pressed on the bridge column, the whole active frame is adjusted and displaced left and right, and the adjustable measuring group is synchronously adjusted and displaced left and right to detect and measure the bottom of the box girder.

5. A bridge structure displacement measuring device according to claim 1 or 4, characterised in that, The double drive assembly includes a first screw rod and a second screw rod rotatably installed on the left and right sides of the active frame, the first screw rod and the second screw rod are threadedly penetrated by the sliding plates of the two bidirectional climbing roller members, the opposite side of the first screw rod and the second screw rod is rotatably connected with a rotary connection assembly, and the left and right sides of the active frame are respectively provided with a first drive motor and a second drive motor for driving the rotation of the first screw rod and the second screw rod.

6. A bridge structure displacement measuring device according to claim 5, wherein The rotating connection assembly comprises a first T-shaped rotating sleeve and a second T-shaped rotating sleeve connected by two bolted flanges, a first shaft part is rotatably arranged inside the first T-shaped rotating sleeve and fixedly connected with a first screw rod, and a second shaft part is rotatably arranged inside the second T-shaped rotating sleeve and fixedly connected with a second screw rod.

7. A bridge structure displacement measuring device according to claim 1 or 4, wherein The adjusting measurement group comprises a rotating plate hinged on the front side of the movable frame, a plurality of second distance meters and horizontal detectors arranged on the upper side of the rotating plate, and a rotating telescopic rod hinged at the end of the rotating plate and rotatably connected with the movable frame, a sliding vertical plate is longitudinally arranged on the upper side of the rotating plate, and a vertical pushing telescopic rod for pushing the sliding vertical plate to slide forward and backward is arranged on the lower side of the rotating plate, and the second distance meters and the horizontal detectors are both arranged on the upper side of the sliding vertical plate.

8. The bridge structure displacement measuring device according to claim 1, wherein A plurality of rectangular guide rods are transversely arranged in the middle of the movable frame and penetrate the sliding plate.

9. The bridge structure displacement measuring device according to claim 1, wherein Sliding grooves are arranged on the upper and lower sides of the movable frame, and sliding blocks are arranged on the upper and lower sides of the sliding plate and adapted to slide in the sliding grooves.

10. The bridge structure displacement measuring device of claim 1, wherein, Anti-skid teeth are arranged on the outer surface of the rubber anti-skid track, track transmission wheels are arranged on the upper rotating roller and the lower rotating roller, and transmission tooth openings are arranged on the inner surface of the rubber anti-skid track and adapted to be connected with the track transmission wheels.

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