Compensation device for road construction surveying

Abstract

The application relates to the technical field of construction survey, in particular to a compensation device for highway construction survey. The device comprises a supporting mechanism, a clamping mechanism and an adjusting mechanism, the adjusting mechanism comprises a height adjusting unit, a connecting piece and a horizontal adjusting unit, the height adjusting unit comprises a contraction main rod, a contraction auxiliary rod and a fastener, the contraction main rod is arranged on the supporting mechanism, the contraction auxiliary rod is movably arranged in the contraction main rod, the contraction auxiliary rod slides along the length direction of the contraction main rod and the contraction main rod and the contraction auxiliary rod are fixed by the fastener; the connecting piece comprises a hollow seat and a connecting plate, the hollow seat is arranged at the end of the contraction auxiliary rod far from the contraction main rod, the hollow seat is in the shape of a Chinese character 'fang', and the connecting plate is arranged in the hollow part of the hollow seat; the horizontal adjusting unit comprises a rectangular frame, a screw rod and a sliding block, the rectangular frame is arranged on the connecting plate, the screw rod is rotatably arranged in the rectangular frame, the sliding block is threadedly arranged on the screw rod, the sliding block moves along the length direction of the rectangular frame, and the clamping mechanism is arranged on the sliding block through a movable piece.

Description

Technical Field

[0013]

[0001] The present invention relates to the technical field of construction surveying, and specifically relates to a compensation device for highway construction surveying. Background Art

[0002] During highway surveying, hand-held surveying instruments are often selected for measurement. Such surveying instruments are usually used in the early stage of road surveying to supplement the data in the survey report, thereby improving the accuracy of information and ensuring that no accidents occur during the implementation of the project.

[0003] However, the existing surveying instrument devices have the following defects during actual use:

[0004] 1. Due to the hand-held surveying instrument, it is easy to出现晃动现象, resulting in different measured data; at the same time, it is not easy to adjust the height position and horizontal position of the surveying instrument, which is likely to bring较大的实验误差 and affect the subsequent data calculation.

[0005] 2. The existing compensation devices for surveying instruments are not convenient for storage and carrying, and the convenience needs to be improved.

[0006] In view of the deficiencies of the existing technology, the present invention provides a compensation device for highway bridge construction surveying to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a compensation device for highway bridge construction surveying to solve the problem that inaccurate measurement data obtained by manually holding a surveying instrument during measurement affects construction as mentioned in the above background art.

[0008] To achieve the above object, the present invention is realized through the following technical solutions:

[0009] A compensation device for highway bridge construction surveying includes a support mechanism, a clamping mechanism, and an adjustment mechanism. The clamping mechanism is used for clamping a surveying instrument, and the adjustment mechanism is used for adjusting the position of the surveying instrument.

[0010] The adjustment mechanism includes a height adjustment unit, a connecting member, and a horizontal adjustment unit. The horizontal adjustment unit is movably arranged on the height adjustment unit through the connecting member

[0011] The height adjustment unit includes a main retractable rod, a sub-retractable rod, and a fastener. The main retractable rod is arranged on the support mechanism. The sub-retractable rod is movably arranged inside the main retractable rod. The sub-retractable rod slides along the length direction of the main retractable rod and is fixed to the main retractable rod and the sub-retractable rod by the fastener.

[0012] ​​​The horizontal adjustment unit includes a rectangular frame, a screw, and a slider. The rectangular frame is located on the side of the connecting plate away from the hollow seat. The screw is rotatably mounted in the rectangular frame, and the slider is threaded onto the screw. The slider moves along the length of the rectangular frame, and a clamping mechanism is mounted on the slider via a movable part.

[0014] Based on the above-mentioned compensation device for highway bridge construction surveying, the movable component includes a connecting column, an adjusting plate, a central column, and an adjusting seat. The connecting column is located on the side of the slider away from the rectangular frame. The adjusting plate is movably mounted on the connecting column. The central column is fixedly mounted on the end of the adjusting plate away from the connecting column. The adjusting seat is movably mounted on the central column. The adjusting seat can move away from or towards the adjusting plate. A clamping mechanism is provided on the upper surface of the adjusting seat.

[0015] Based on the aforementioned compensation device for highway bridge construction surveying, an anti-collision pad is provided on the side of the adjustment seat near the adjustment plate. The anti-collision pads are symmetrically arranged on both sides of the central column, and an anti-collision groove adapted to the anti-collision pad is provided on the adjustment plate.

[0016] Based on the above-mentioned compensation device for highway bridge construction surveying, the movable component also includes a second elastic component. The second elastic component includes a second baffle and a second spring. The second baffle is located at the end of the central column away from the adjusting plate, and the second spring is sleeved on the central column. One end of the second spring is located on the second baffle, and the other end of the second spring is located on the inner wall of the adjusting seat.

[0017] Based on the above-mentioned compensation device for highway bridge construction surveying, the clamping mechanism includes a tie rod, a bearing plate, a clamping plate and a third elastic element. The bearing plate is set on the adjusting seat, and a through hole is provided on the bearing plate. The tie rod is set in the through hole of the bearing plate. A clamping plate is provided at one end of the tie rod located outside the bearing plate, and a third elastic element is provided on the tie rod.

[0018] The third elastic element includes a tension spring and a third stop plate. The tension spring is sleeved on the tie rod, and the third stop plate is located at the end of the tie rod away from the clamping plate.

[0019] Based on the above-mentioned compensation device for highway bridge construction surveying, the bearing plate has four through holes and four tie rods are set accordingly. A clamping plate is set on the two tie rods located in the middle of the bearing plate, and another clamping plate is set on the two tie rods located on both sides of the bearing plate. The two clamping plates can move towards each other or away from each other.

[0020] Based on the aforementioned compensation device for highway bridge construction surveying, it also includes a connector, which comprises a cylindrical shell, a tie rod, and a first elastic element.

[0021] A cylindrical shell is fixedly mounted on the upper surface of a hollow base. A movable groove is provided inside the cylindrical shell, and a tie rod is movably mounted at the center of the cylindrical shell. A first elastic element is mounted on the tie rod located in the movable groove.

[0022] A handle is provided at one end of the lever, and a locking head is provided at the other end. The locking head of the lever passes through the cylindrical shell, the hollow base and the connecting plate in sequence to connect the height adjustment unit and the level adjustment unit together.

[0023] Based on the aforementioned compensation device for highway bridge construction surveying, the first elastic element includes a first baffle and a first spring.

[0024] The first baffle is mounted on the pull rod, and the first spring is sleeved on the pull rod. One end of the first spring is mounted on the first baffle, and the other end of the first spring is mounted on the inner wall of the cylindrical shell.

[0025] Based on any of the above-mentioned compensation devices for highway bridge construction surveying, the support mechanism includes a movable seat, connecting bolts, and a support frame.

[0026] The movable seat has a slot in the middle for accommodating the retractable main rod, and double mounting ears on the outside.

[0027] One end of the support frame is equipped with a support leg, and a rubber sleeve is installed below the support leg. The other end of the support frame has a single mounting ear.

[0028] A single mounting ear can be fitted into a double mounting ear to fix the movable seat and support frame by connecting bolts.

[0029] Based on the aforementioned compensation device for highway bridge construction surveying, the main retractable rod and the slot wall of the movable seat are fixed together by fastening bolts.

[0030] Compared with the prior art, the advantages of the present invention are as follows:

[0031] 1. By setting up a clamping mechanism, the present invention can place the measuring instrument on the clamping mechanism, avoiding the phenomenon of shaking that is easy to occur when the measuring instrument is manually held, which is conducive to improving the accuracy of the test, thereby improving the accuracy of the information, and thus helping to reduce the risk of accidents during the implementation of the project.

[0032] 2. Through the design of the adjustment mechanism, namely the existence of the height adjustment unit and the horizontal adjustment unit, the present invention enables the operator to adjust the height and horizontal position of the measuring instrument according to different situations, thereby correcting the measurement results during measurement, improving the accuracy of the measurement data, reducing measurement errors, and increasing the accuracy of subsequent calculation results.

[0033] 3. This invention, by incorporating connectors, plug-in parts, movable parts, and a detachable support mechanism, allows for disassembly when not in use, saving storage space and facilitating portability. The connectors and plug-in parts enable the disassembly and assembly of the height adjustment unit and the horizontal height adjustment unit. The movable parts allow the disassembly and assembly of the horizontal adjustment unit and the clamping mechanism. The support mechanism itself is detachable, and the support mechanism and the height adjustment unit are also detachable. This design allows for effective storage, significantly reducing storage space, and facilitates portability, making it more convenient for workers to carry and transport the device, thus increasing its usability. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0035] Figure 1 This is a schematic diagram of the structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the horizontal adjustment unit structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the connector and plug-in structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the movable component of the present invention;

[0039] Figure 5 This is a schematic diagram of the clamping mechanism of the present invention;

[0040] Figure 6 This is a schematic diagram of the support mechanism structure of the present invention.

[0041] In the diagram: 1. Retractable main rod; 2. Hollow seat; 3. Connecting plate; 4. Rectangular frame; 5. Slider; 6. Connecting column; 7. Adjusting plate; 8. Central column; 9. Adjusting seat; 10. Bearing plate; 11. Movable seat; 12. Mounting ear; 13. Connecting bolt; 14. Support frame; 15. Cylindrical shell; 16. Tie rod; 17. First baffle; 18. First spring; 19. Second baffle; 20. Second spring; 21. Anti-collision pad; 22. Tie rod; 23. Tensioning spring; 24. Clamping plate; 25. Retaining ring; 26. Single mounting ear; 27. Retractable auxiliary rod; 28. Screw; 29. ​​Third baffle; 30. Hole slot; 31. Support leg; 32. Rubber sleeve; 33. Anti-collision groove; 34. Fastening bolt. Detailed Implementation

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In view of the problems existing in the prior art, the present invention provides a new technical solution, that is, a compensation device for highway bridge construction survey. Please refer to Figures 1-6 , which includes a support mechanism, a clamping mechanism and an adjustment mechanism. The clamping mechanism is used for clamping the survey instrument, and the adjustment mechanism is used for adjusting the position of the survey instrument.

[0044] The adjustment mechanism includes a height adjustment unit, a connecting member and a horizontal adjustment unit. The horizontal adjustment unit is movably arranged on the height adjustment unit through the connecting member.

[0045] The height adjustment unit includes a main contraction rod 1, a secondary contraction rod 27 and a fastener. The main contraction rod 1 is arranged on the support mechanism. The secondary contraction rod 27 is movably arranged inside the main contraction rod 1. The secondary contraction rod 27 slides along the length direction of the main contraction rod 1 and is fixed to the main contraction rod 1 and the secondary contraction rod 27 by the fastener. When the secondary contraction rod 27 moves to the required height, it is fixed by the fastener. The fastener includes a fastening buckle and a retaining ring 25. The fastener is arranged at one end of the main contraction rod 1 close to the secondary contraction rod 27. The fastening buckle and the retaining ring 25 can be integrally formed or two separate parts. The retaining ring 25 is arranged on the main contraction rod 1. The fastening buckle can pass through the main contraction rod 1 and the secondary contraction rod 27 to fix them. The retaining ring 25 is located below the fastening buckle to prevent the dropping of the fastening buckle during fixation. When the secondary contraction rod 27 moves relative to the main contraction rod, it will change the position of the horizontal adjustment unit arranged on the height adjustment unit in the vertical direction, and the position of the clamping mechanism on the horizontal adjustment unit will also change accordingly, thereby realizing the adjustment of the survey instrument in the height direction.

[0046] The connecting member includes a hollow seat 2 and a connecting plate 3. The hollow seat 2 is arranged at one end of the secondary contraction rod 27 far from the main contraction rod 1. The hollow seat 2 is in a "U" shape. The connecting plate 3 is arranged in the hollow part of the hollow seat 2. The hollow seat 2 is arranged on the height adjustment unit, and the horizontal adjustment unit is arranged on the connecting plate 3. And the connecting plate 3 is movably arranged on the hollow seat 2 to facilitate the disassembly and assembly of the height adjustment unit and the horizontal adjustment unit, and is convenient for storage and carrying.

[0047] The leveling unit includes a rectangular frame 4, a screw 28, and a slider 5. The rectangular frame 4 is located on the side of the connecting plate 3 away from the hollow seat 2. The screw 28 is rotatably mounted in the rectangular frame 4, and the slider 5 is threaded onto the screw 28. The slider 5 moves along the length of the rectangular frame 4, and a clamping mechanism is mounted on the slider 5 via a movable part. One end of the screw 28 extends out of the rectangular frame 4 to facilitate its movement. The screw 28 can be driven by manual rotation, a handle can be installed on it for stable gripping, or a small drive motor can be installed to drive it. The specific configuration can be chosen based on actual needs. The rotation of the screw 28 drives the slider 5, which in turn drives the clamping mechanism, thus changing the horizontal position of the measuring instrument located within the clamping mechanism.

[0048] In this embodiment, the movable components include a connecting post 6, an adjusting plate 7, a central post 8, and an adjusting seat 9. The connecting post 6 is located on the side of the slider 5 away from the rectangular frame 4. The adjusting plate 7 is movably mounted on the connecting post 6. The central post 8 is fixedly mounted on the end of the adjusting plate 7 away from the connecting post 6. The adjusting seat 9 is movably mounted on the central post 8. The adjusting seat 9 can move away from or towards the adjusting plate 7. A clamping mechanism is provided on the upper surface of the adjusting seat 9. The adjusting plate 7 has a slotted hole to allow it to be movably mounted on the connecting post 6 and to allow the adjusting plate 7 to change its angle on the connecting post 6. A stop is provided on the connecting post 6 to prevent the adjusting plate 7 from falling off the connecting post 6 and to fix the adjusting plate 7 in place. The adjusting plate 7 can be detached from the connecting post 6 to facilitate the separation of the clamping mechanism and the horizontal adjustment unit for easy storage, carrying, and transportation.

[0049] In this embodiment, an anti-collision pad 21 is provided on the side of the adjusting seat 9 near the adjusting plate 7. The anti-collision pads 21 are symmetrically arranged on both sides of the central column 8. An anti-collision groove 33 adapted to the anti-collision pad 21 is provided on the adjusting plate 7. The anti-collision pad 21 can be made of rubber. The anti-collision pad 21 can enter the anti-collision groove 33. The anti-collision groove 33 generates a certain amount of friction on the anti-collision pad 21, thereby increasing the buffering effect of the anti-collision pad 21. The cooperation between the anti-collision pad 21 and the anti-collision groove 33 can avoid the excessive impact force generated by the direct contact between the adjusting seat 9 and the adjusting plate 7 when the clamping mechanism is retracted, which could damage the device or cause the measuring instrument on the clamping mechanism to fall off.

[0050] In this embodiment, the movable component further includes a second elastic component, which includes a second baffle 19 and a second spring 20. The second baffle 19 is disposed at the end of the central column 8 away from the adjusting plate 7, and the second spring 20 is sleeved on the central column 8. One end of the second spring 20 is disposed on the second baffle 19, and the other end of the second spring 20 is disposed on the inner wall of the adjusting seat 9. When the clamping plate 24 of the clamping mechanism moves backward to clamp the measuring instrument, the adjusting seat 9 moves away from the adjusting plate 7. The presence of the second baffle 19 can prevent the adjusting seat 9 from falling off the central column 8. When the clamping plate 24 of the clamping mechanism retracts, the adjusting seat 9 moves closer to the adjusting plate 7. The second spring 20 can play a buffering and resetting role when the adjusting seat 9 moves.

[0051] In this embodiment, the clamping mechanism includes a pull rod 22, a support plate 10, a clamping plate 24, and a third elastic element. The support plate 10 is mounted on the adjusting seat 9 and has a through hole. The pull rod 22 is mounted in the through hole of the support plate 10. The clamping plate 24 is mounted on the end of the pull rod 22 located outside the support plate 10, and the third elastic element is mounted on the pull rod 22. The support plate 10 and the clamping plate 24 are U-shaped and are used to hold measuring instruments, thus eliminating the need for manual handling and measurement, and preventing hand wobbling, thereby improving the accuracy of data measurement and reducing measurement errors. Rubber pads can also be mounted on the support plate 10 and the clamping plate 24 to increase friction, which helps prevent the measuring instruments from falling off and protects the measuring instruments from wear.

[0052] The third elastic element includes a tension spring 23 and a third baffle 29. The tension spring 23 is sleeved on the tie rod 22, and the third baffle 29 is located at the end of the tie rod 22 away from the clamping plate 24.

[0053] In this embodiment, the support plate 10 has four through holes, and four tie rods 22 are correspondingly provided. The tie rods 22 can be divided into two groups, each group containing two tie rods 22. One group is located in the middle of the support plate 10, and the other group is located on both sides of the support plate 10. The two groups of tie rods 22 can move towards each other or away from each other. A clamping plate 24 is provided on the two tie rods 22 located in the middle of the support plate 10, and another clamping plate 24 is provided on the two tie rods 22 located on both sides of the support plate 10. The two clamping plates 24 can move towards each other or away from each other. During operation, the clamping plates 24 can be manually operated. When the clamping plates 24 and the two groups of tie rods 22 move away from each other, the measuring instrument can be placed on the support plate 10. After placing the measuring instrument, the clamping plates 24 are slowly released. At this time, the clamping plates 24 and the two groups of tie rods 22 move towards each other to clamp the measuring instrument.

[0054] In this embodiment, a connector is also included, comprising a cylindrical shell 15, a pull rod 16, and a first elastic element.

[0055] A cylindrical shell 15 is fixedly mounted on the upper surface of the hollow base 2. A movable groove is provided inside the cylindrical shell 15, and a pull rod 16 is movably mounted at the center of the cylindrical shell 15. A first elastic element is provided on the pull rod 16 located in the movable groove.

[0056] A handle is provided at one end of the lever 16, and a locking head is provided at the other end. The locking head of the lever 16 passes through the cylindrical shell 15, the hollow base 2, and the connecting plate 3 in sequence to connect the height adjustment unit and the level adjustment unit together. Since the hollow base 2 and the connecting plate 3 are movably connected, the presence of the connector prevents the connecting plate 3 from falling off the hollow base 2, effectively improving the connection between the height adjustment unit and the level adjustment unit. If you want to save storage space and make it easy to carry, you can separate the height adjustment unit and the level adjustment unit. Hold the handle and move the lever 16 away from the hollow base 2. The locking head will disengage from the connecting plate 3 and the hollow base 2 in sequence and enter the movable groove of the cylindrical shell 15. At this time, the connecting plate 3 can be pulled out from the hollow base 2. At this time, the level adjustment unit set on the connecting plate 3 is separated from the height adjustment unit connected to the hollow base 2.

[0057] In this embodiment, the first elastic element includes a first baffle 17 and a first spring 18.

[0058] The first baffle 17 is mounted on the pull rod 16, and the first spring 18 is sleeved on the pull rod 16. One end of the first spring 18 is mounted on the first baffle 17, and the other end of the first spring 18 is mounted on the inner wall of the cylindrical shell 15.

[0059] In this embodiment, the support mechanism includes a movable seat 11, connecting bolts 13, and a support frame 14.

[0060] The movable seat 11 has a slot 30 in the middle for placing the retractable main rod 1. The cross-section of the slot 30 can be quadrilateral, circular, or other shapes. The cross-section of the retractable main rod 1 and the cross-section of the slot 30 are matched. The movable seat 11 has double mounting ears 12 on its exterior. In this embodiment, the movable seat 11 is preferably a quadrilateral seat with double mounting ears 12 on all four sides.

[0061] A support leg 31 is provided at one end of the support frame 14, and a rubber sleeve 32 is provided below the support leg 31. The rubber sleeve 32 can protect the support leg 31 and reduce wear, while increasing the friction with the ground to make the entire device more stable. A single mounting ear 26 is provided at the other end of the support frame 14. Four ears are provided on the support frame 14 to increase the overall stability of the device.

[0062] Both the double mounting ears 12 and the single mounting ear 26 are provided with through holes for the connecting bolts 13 to pass through. The single mounting ear 26 can be fitted into the double mounting ears 12, and the movable seat 11 and the support frame 14 are fixed by the connecting bolts 13. When not in use, the support frame 14, the movable seat 11, and the retractable main rod 1 can be disassembled for storage, saving storage space and making it easy to carry and transport, thus increasing the convenience of the device in use.

[0063] In this embodiment, the retractable main rod 1 is inserted into the slot 30 of the movable seat 11. The lower end of the retractable main rod 1 and the slot wall are both provided with through holes for the fastening bolts 34 to pass through. To prevent the retractable main rod 1 from falling off, the retractable main rod 1 and the slot wall of the movable seat 11 are fixed together by the fastening bolts 34. When not in use or when it is inconvenient to carry, the fastening bolts 34 can be loosened to separate the retractable main rod 1 from the movable seat 11.

[0064] When using this device, first assemble it, then place the measuring instrument on the clamping mechanism, and then adjust the height adjustment unit and the level adjustment unit to position the measuring device in the required position for measurement. This allows the operator to adjust the horizontal and vertical positions of the measuring instrument according to different situations, thereby correcting the measurement results during measurement, improving the accuracy of data measurement, reducing measurement errors, and increasing the accuracy of subsequent calculation results. Moreover, because this device adopts a detachable structure, it is more convenient for operators to carry and move the device, increasing the convenience of its use.

[0065] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compensation device for highway bridge construction surveying, characterized in that: It includes a support mechanism, a clamping mechanism and an adjustment mechanism. The clamping mechanism is used to clamp the measuring instrument, and the adjustment mechanism is used to adjust the position of the measuring instrument. The adjustment mechanism includes a height adjustment unit, a connecting member and a horizontal adjustment unit. The horizontal adjustment unit is movably arranged on the height adjustment unit through the connecting member. The height adjustment unit includes a retractable main rod (1), a retractable sub-rod (27) and a fastener. The retractable main rod (1) is arranged on the support mechanism. The retractable sub-rod (27) is movably arranged inside the retractable main rod (1). The retractable sub-rod (27) slides along the length direction of the retractable main rod (1) and the retractable main rod (1) and the retractable sub-rod (27) are fixed by the fastener. The connecting member includes a hollow seat (2) and a connecting plate (3). The hollow seat (2) is arranged at one end of the retractable sub-rod (27) away from the retractable main rod (1). The hollow seat (2) is in a "U" shape, and the connecting plate (3) is arranged in the hollow part of the hollow seat (2). The horizontal adjustment unit includes a rectangular frame (4), a screw rod (28) and a slider (5). The rectangular frame (4) is arranged on one side of the connecting plate (3) away from the hollow seat (2). The screw rod (28) is rotatably arranged in the rectangular frame (4). The slider (5) is arranged on the screw rod (28) in a threaded manner. The slider (5) moves along the length direction of the rectangular frame (4). The clamping mechanism is arranged on the slider (5) through a movable member. The movable member includes a connecting column (6), an adjusting plate (7), a central column (8) and an adjusting seat (9). The connecting column (6) is arranged on one side of the slider (5) away from the rectangular frame (4). The adjusting plate (7) is movably arranged on the connecting column (6). The central column (8) is fixedly arranged at one end of the adjusting plate (7) away from the connecting column (6). The adjusting seat (9) is movably arranged on the central column (8). The adjusting seat (9) can move in a direction away from or close to the adjusting plate (7). The clamping mechanism is arranged on the upper surface of the adjusting seat (9). The clamping mechanism includes an opposing pull rod (22), a bearing plate (10), a clamping plate (24) and a third elastic member. The bearing plate (10) is arranged on the adjusting seat (9). A through hole is arranged on the bearing plate (10). The opposing pull rod (22) is arranged in the through hole of the bearing plate (10). The clamping plate (24) is arranged at one end of the opposing pull rod (22) outside the bearing plate (10). The third elastic member is arranged on the opposing pull rod (22). The third elastic member includes a tension spring (23) and a third stop piece (29). The tension spring (23) is sleeved on the opposing pull rod (22). The third stop piece (29) is arranged at one end of the opposing pull rod (22) away from the clamping plate (24).

2. The compensation device for highway bridge construction surveying according to claim 1, characterized in that: An anti-collision pad (21) is arranged on one side of the adjusting seat (9) close to the adjusting plate (7). The anti-collision pads (21) are symmetrically arranged on both sides of the central column (8). An anti-collision groove (33) adapted to the anti-collision pad (21) is arranged on the adjusting plate (7).

3. The compensation device for highway bridge construction surveying according to claim 1, characterized in that: The movable part also includes a second elastic element, which includes a second baffle (19) and a second spring (20). The second baffle (19) is located at the end of the central column (8) away from the adjusting plate (7). The second spring (20) is sleeved on the central column (8). One end of the second spring (20) is located on the second baffle (19), and the other end of the second spring (20) is located on the inner wall of the adjusting seat (9).

4. A compensation device for highway bridge construction surveying according to claim 1, characterized in that: The bearing plate (10) has four through holes, and four tie rods (22) are set accordingly. A clamping plate (24) is set on the two tie rods (22) located in the middle of the bearing plate (10), and another clamping plate (24) is set on the two tie rods (22) located on both sides of the bearing plate (10). The two clamping plates (24) can move towards each other or away from each other.

5. A compensation device for highway bridge construction surveying according to claim 1, characterized in that: It also includes a connector, which comprises a cylindrical shell (15), a pull rod (16), and a first elastic element. A cylindrical shell (15) is fixedly mounted on the upper surface of the hollow base (2). A movable groove is provided inside the cylindrical shell (15). A pull rod (16) is movably mounted at the center of the cylindrical shell (15). A first elastic element is provided on the pull rod (16) located in the movable groove. A handle is provided at one end of the lever (16), and a clip is provided at the other end of the lever (16). The clip of the lever (16) passes through the cylindrical shell (15), the hollow seat (2) and the connecting plate (3) in sequence to connect the height adjustment unit and the level adjustment unit together.

6. A compensation device for highway bridge construction surveying according to claim 5, characterized in that: The first elastic element includes a first baffle (17) and a first spring (18). The first baffle (17) is set on the pull rod (16), and the first spring (18) is sleeved on the pull rod (16). One end of the first spring (18) is set on the first baffle (17), and the other end of the first spring (18) is set on the inner wall of the cylindrical shell (15).

7. A compensation device for highway bridge construction surveying according to any one of claims 1-6, characterized in that: The support mechanism includes a movable seat (11), connecting bolts (13), and a support frame (14). The movable seat (11) has a slot (30) in the middle for placing the retractable main rod (1), and the movable seat (11) has double mounting ears (12) on the outside. A support leg (31) is provided at one end of the support frame (14), a rubber sleeve (32) is provided below the support leg (31), and a single ear (26) is installed at the other end of the support frame (14). A single mounting ear (26) can be fitted into a double mounting ear (12) and the movable seat (11) and the support frame (14) are fixed by connecting bolts (13).

8. A compensation device for highway bridge construction surveying according to claim 7, characterized in that: The retractable main rod (1) and the movable seat (11) are fixed together by fastening bolts (34).

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