A bridge displacement measuring device for bridge construction

Abstract

The present invention discloses a bridge displacement measuring device for bridge construction, which relates to the field of optical measuring equipment for bridge construction, and includes a column, wherein at least one column is provided at both ends of the bridge to be measured, wherein a sliding column is slidably connected up and down in the column, wherein a laser measuring assembly is provided at the top of the sliding column, wherein a bottom plate is fixedly connected to the bottom end of the column, wherein the bottom surface of the bottom plate is connected to a clamping structure for clamping and matching the top of the bridge. The present invention utilizes a sliding column that can be extended up and down in the column structure to adjust the height of the laser measuring assembly, and calculates the settlement displacement difference between two adjacent piers from the time when the high-speed railway pier is completed to the time when the bridge section is to be overlapped according to the sliding adjustment amount of each sliding column, so as to conveniently complete the displacement measurement work between two adjacent piers during the bridge construction process.

Description

Technical Field

[0001] The invention relates to the field of optical measuring equipment for bridge construction, in particular to a bridge displacement measuring device for bridge construction. Background Art

[0002] Most of the existing elevated bridges are built in sections. The piers are usually built on the elevated bridge line before the bridge. After the subsequent bridge sections are built, they are transported to the piers by large-scale transport equipment and spliced ​​in sequence. Before the bridge sections are spliced, manual precise measurement of adjacent piers is required at the splicing point to ensure accurate overlap of the bridge.

[0003] A Chinese patent with related announcement number CN112073644B discloses a data feedback device for horizontal displacement monitoring points for high-speed railway piers, including a pier body and a control component, wherein the control component is arranged on the outer side of the pier body, a triangular prism is fixedly provided on the outer side of the pier body, a column is fixedly provided on the side of the pier body close to the triangular prism, a laser rangefinder is fixedly provided on the upper end face of the column, an output end of the laser rangefinder and an edge of the triangular prism are located on the same horizontal plane, a box body is fixedly provided on the side of the pier body, a cross plate is fixedly provided inside the box body, a connecting rod is passed through the cross plate, the connecting rod and the cross plate are rotatably matched, one end of the connecting rod is fixedly connected to a laser emitter, the other end of the connecting rod is fixedly provided with a weight block, and one end of the laser emitter is provided with an imaging board.

[0004] With respect to the above-mentioned related technologies, the existing high-speed railway bridge displacement measuring device needs to cooperate with the laser measuring components arranged on the outer side of the pier body and the columns installed near the pier body to realize the measurement of the pier settlement. Before the high-speed railway piers erect the bridge section, the ground construction personnel need to install the laser measuring components on the high-speed railway piers, and also need to install the columns and the laser measuring components on the columns next to the high-speed railway piers before they can measure the settlement of one of the piers. It is rather troublesome to measure the two high-speed railway piers that are to be connected by the bridge section at the same time. In summary, the existing bridge displacement measuring device for bridge construction has the problem of inconvenience in simultaneously measuring the settlement data of the two piers that are to be connected by the bridge section. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a bridge displacement measuring device for bridge construction to solve the technical problem that the existing bridge displacement measuring device for bridge construction is inconvenient to simultaneously measure the settlement data of two bridge piers to be overlapped.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bridge displacement measuring device for bridge construction, comprising a column, wherein at least one column is arranged at both ends of the bridge to be measured, a sliding column is slidably connected up and down in the column, a laser measurement assembly is arranged at the top of the sliding column, the bottom end of the column is fixedly connected to a base plate, and the bottom surface of the base plate is connected to a clamping structure for clamping and matching with the top of the bridge.

[0007] By adopting the above technical solution, the height of the laser measurement component is adjusted by using the sliding column that can be extended and retracted up and down in the column structure. The settlement displacement difference between two adjacent piers after the completion of the high-speed railway pier and before the bridge section is to be connected is calculated according to the sliding adjustment amount of each sliding column. This can conveniently complete the displacement measurement work between two adjacent piers during the bridge construction process.

[0008] The present invention is further configured such that two columns are respectively provided at both ends of the bridge to be tested, and the side walls of the tops of the two sliding columns close to each other are respectively provided with a laser emitting end and a laser receiving end in an annular manner, and the laser emitting end faces the other laser receiving end.

[0009] By adopting the above technical solution, the settlement of the bridge in the horizontal direction can be determined by the height difference of the rising sliding column.

[0010] The present invention is further configured such that connecting platforms are arranged at the top ends of two mutually adjacent columns facing each other, and the connecting platforms are both threadedly connected with telescopic cylinders. The two telescopic cylinders are coaxially and simultaneously slidably connected in the fixed cylinder, and both ends of the fixed cylinder are provided with fixing structures for fixing the telescopic cylinders.

[0011] By adopting the above technical solution, the two groups of columns connected in combination can further improve the stability of the installation.

[0012] The present invention is further configured such that a top cover is provided at the top end of the sliding column, and a level bubble is connected to the center of the top end of the top cover.

[0013] By adopting the above technical solution, the level bubble installed on the top cover is used to judge whether the sliding column is in a vertical state, thereby preventing measurement errors caused by the tilt of the sliding column.

[0014] The present invention is further configured such that a telescopic rod pointing upward is fixedly connected inside the column, the top end of the telescopic rod is connected to a sliding column, a vertical guide groove is provided inside the column, and the bottom end of the sliding column is connected to a guide seat matching the guide groove.

[0015] By adopting the above technical solution, the guide groove cooperates with the guide seat to enable the sliding column to stably slide in the column along the vertical direction.

[0016] The present invention is further configured such that a conical boss is provided at the top of the column, and a fitting sealing ring is connected to the boss, and an annular flange is provided at the top of the sliding column, and the annular flange of the sliding column can press the sealing ring.

[0017] By adopting the above technical solution, when the sliding column is retracted into the column, it can simultaneously play a role in sealing the top of the column, thereby effectively improving the airtightness of the internal space of the column.

[0018] The present invention is further configured such that two groups of first sliding grooves are provided on the bottom surface of the base plate, the two first sliding grooves between each group of the first sliding grooves are parallel to each other, sliders are slidably connected in the first sliding grooves, a driving structure for driving the sliders to slide is provided in the base plate, the bottom end of the slider is connected to a connecting block, and the bottom end of the connecting block is rotatably connected to a moving plate.

[0019] By adopting the above technical solution, the effect of stably installing the columns is achieved.

[0020] The present invention is further configured such that the two movable plates under each group of the first slide grooves are parallel to each other, the length direction of the movable plates is orthogonal to the first slide grooves, one side of the movable plates is an arc surface and the other side is a plane, and a telescopic plate is connected to the top of one side of the plane, and the telescopic plate is used to limit the rotation of the movable plate toward one side of the telescopic plate, and the two movable plates that are close to each other and in a parallel state cannot rotate toward each other.

[0021] By adopting the above technical solution, the stability of the column installed on the high-speed railway pier is improved.

[0022] The present invention is further configured such that the length direction of the movable sheet is parallel to the first slide groove, the telescopic sheet at the top of the movable sheet is telescopically connected inside the movable sheet, each group of the movable sheets can remain parallel to the base plate after relatively rotating in the opposite direction, and the distance between the two ends of each group of the movable sheets is the same as the width of the position on the sleeper for installing the rail fasteners.

[0023] By adopting the above technical solution, the inclination state of the bridge section is further measured, and construction defects such as excessive inclination angle after splicing are discovered in time.

[0024] The present invention is further configured such that the laser emitting end and the laser receiving end at the top of the sliding column are arranged at an interval of ninety degrees in the circumferential direction.

[0025] By adopting the above technical solution, it is beneficial for the laser receiving end to receive the laser emitted by the laser emitting end in another sliding column.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] 1. The present invention sets four groups of column structures that can be conveniently fixed on high-speed railway bridge piers or high-speed railway bridge decks, and uses sliding columns that can be extended and retracted in the column structures to adjust the height of the laser measurement assembly. When the four groups of laser measurement equipment simultaneously receive corresponding laser signals, the settlement displacement difference between two adjacent piers from the completion of the high-speed railway bridge pier to the bridge section to be overlapped is calculated according to the sliding adjustment amount of each sliding column, so as to provide correction reference data for the subsequent bridge section splicing, and can also measure the horizontality of the overlapped bridge section, so as to conveniently complete the displacement measurement work between two adjacent piers during the bridge construction process;

[0028] 2. The present invention provides a telescopically adjustable connection structure between two adjacent column structures, combines and connects the two adjacent column structures, and cooperates with the moving piece under the bottom plate of the column structure, so that the column can be conveniently and stably installed on the specified plane, and the horizontal state of the laser measurement component on the column is maintained, providing reliable support for subsequent laser measurement work;

[0029] 3. The present invention provides a frustum-shaped protrusion at the top of the column, and a frustum-shaped sealing ring at the protrusion. When the sliding column is retracted into the column, the top of the sliding column can press the sealing ring on the frustum. Since the sealing ring is fixedly connected to the top of the column, the column can provide good protection for the sliding column when the sliding column is retracted into the column.

[0030] 4. The present invention adjusts the connection method between the connecting block and the slider so that the bottom plate can be installed in conjunction with the support pad stone of the high-speed railway pier or the roadbed of the ballastless track. During the overlapping construction of the bridge section, the settlement measurement of two adjacent sections of the pier can be quickly achieved, reducing the workload of the construction surveying personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional diagram of the combined state of two columns of the present invention;

[0032] Figure 2 A three-dimensional diagram of the combined state of two columns from another perspective of the present invention;

[0033] Figure 3 For the present invention Figure 2 A magnified view of middle;

[0034] Figure 4 It is a three-dimensional diagram of the sliding column of the present invention in a retracted state;

[0035] Figure 5 For the present invention Figure 4 Enlarged view of middle B;

[0036] Figure 6 It is an exploded perspective view of the internal structure of the column of the present invention;

[0037] Figure 7 It is an exploded three-dimensional diagram of the movable sheet at the bottom surface of the bottom plate of the present invention;

[0038] Figure 8 A three-dimensional diagram of a connection block of the present invention;

[0039] Fig. 9 A three-dimensional diagram of the movable sheet of the present invention;

[0040] Fig.10 It is a three-dimensional diagram of the combined state of the slider, the connecting block and the moving piece of the present invention;

[0041] Fig.11 It is a three-dimensional diagram of the state in which two columns of the present invention are assembled and installed on the support pad stone of the high-speed railway pier;

[0042] Fig.12 This is a three-dimensional diagram of the state in which two columns of the present invention are installed on the ballastless track on the surface of a high-speed railway bridge section after being combined;

[0043] Fig.13 For the present invention Fig.12 Enlarged view of C in the middle.

[0044] In the figure: 1. column; 2. sliding column; 3. top cover; 4. bottom plate; 5. laser emitting end; 6. laser receiving end; 7. level bubble; 8. pressure ring; 9. sealing ring; 10. fixed cylinder; 11. telescopic cylinder; 12. connecting platform; 13. first slide groove; 14. screw rod; 15. slider; 16. plug-in hole; 17. connecting block; 18. moving piece; 19. telescopic piece; 20. rotating column; 21. plug-in column; 22. sliding column; 23. second slide groove; 24. guide groove; 25. guide seat; 26. telescopic rod; 27. driving assembly. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] The following describes an embodiment of the present invention based on its overall structure.

[0047] Embodiment 1

[0048] A bridge displacement measuring device for bridge construction, such as Figure 1-13As shown, it includes a column 1, and at least one column 1 is arranged at both ends of the bridge to be measured. Specifically, there are four columns 1 in total. The setting positions of the columns 1 include the piers and the bridge deck at both ends of the bridge. A sliding column 2 is slidably connected up and down in the column 1, and a laser measurement component is arranged on the top of the sliding column 2. The bottom end of the column 1 is fixedly connected to a base plate 4, and the bottom surface of the base plate 4 is connected with a clamping structure for clamping and matching the top of the bridge. Specifically, two columns 1 are respectively arranged at both ends of the bridge to be measured, and the side walls of the tops of the two sliding columns 2 close to each other are annularly spaced and respectively provided with a laser emitting end 5 and a laser receiving end 6, and the laser emitting end 5 faces the other laser receiving end 6. When the laser receiving end 6 receives the laser emitted by the laser emitting end 5, it means that the tops of the two sliding columns 2 are in the same plane. By using two groups of four sliding lifting laser measurement components respectively arranged at both ends of the bridge to transmit and receive signals to each other, the horizontal positioning of the four groups of laser measurement components can be quickly realized. At this time, the settlement of the bridge in the horizontal direction can be judged by the height difference of the sliding column 2.

[0049] See also Figure 1-2 The laser emitting end 5 and the laser receiving end 6 at the top of the sliding column 2 are arranged at a 90-degree interval in the annular direction, so that the lasers emitted by the laser emitting assemblies at the top of the four groups of sliding columns 2 can form a rectangle in the same plane, which is conducive to the laser receiving end 6 receiving the laser emitted by the laser emitting end 5 in another sliding column 2.

[0050] See also Figure 6 A telescopic rod 26 pointing upward is fixedly connected in the column 1. Specifically, the telescopic rod 26 is an electric telescopic rod controlled by a servo motor. The top of the telescopic rod 26 is connected to the sliding column 2. The interior of the sliding column 2 is hollow, and a chamber for accommodating the laser measurement component is arranged at the top. The top of the telescopic rod 26 is fixedly connected to the top of the inner wall of the sliding column 2, so that the sliding column 2 has sufficient telescopic travel. A vertical guide groove 24 is arranged in the column 1, and a guide seat 25 matching the guide groove 24 is connected to the bottom end of the sliding column 2. The guide groove 24 and the guide seat 25 cooperate to enable the sliding column 2 to stably slide in the column 1 along the vertical direction. At the same time, it can also effectively avoid relative rotation between the sliding column 2 and the column 1, and avoid the sliding column 2 sliding relative to the column 1 to affect the detection accuracy of the laser measurement component.

[0051] See also Figure 2-3 , Figure 6-10In order to make the slider 15 slide stably on the bottom surface of the bottom plate 4, two groups of first slide grooves 13 are provided on the bottom surface of the bottom plate 4, and the two first slide grooves 13 between each group of first slide grooves 13 are parallel to each other. The first slide grooves 13 between the two groups of first slide grooves 13 on the bottom plate 4 are close to each other and are in the same straight line. The sliders 15 are slidably connected in the first slide grooves 13, and the sliders 15 in the same group of first slide grooves 13 face opposite directions, so that the moving pieces 18 in a state parallel to the first slide grooves 13 can approach each other, and can be more conveniently inserted into the holes on the support pad stones of the high-speed railway bridge piers.

[0052] See also Figure 2-3 , Figure 6-10 A driving structure for driving the slider 15 to slide is provided in the bottom plate 4. Specifically, the driving structure includes a driving assembly 27 arranged above the bottom plate 4 and located in the lower section of the column 1. A partition is provided at the bottom position of the telescopic rod 26 in the column 1. The driving assembly 27 is installed on the bottom plate 4 in the space below the partition. The driving assembly 27 includes two driving motors. Louver openings for heat dissipation are also provided on both sides of the bottom of the column 1 for the driving assembly 27. The output end of the driving motor is connected to the reducer, and the output shaft of the reducer is connected to the helical gear. Specifically, the axis of the output shaft of the reducer is orthogonal to the axis of the two screws 14 in the same straight line, and the helical gear is used to simultaneously drive the two screws 14 in the same straight line. Specifically, a helical gear is also provided at one end of the screw 14 facing the output shaft of the reducer. The helical gears on the two screws 14 are simultaneously meshed with the helical gears on the output shaft of the reducer, so as to achieve the effect of the driving motor driving the two sliders 15 in the same first slide groove 13 to slide toward or in the opposite direction.

[0053] See also Figure 2-3 , Figure 6-11 The bottom end of the slider 15 is connected with a connecting block 17. Specifically, the connecting block 17 is rotatably connected to one end of the slider 15 through a rotating column 20 at the top. The rotating column 20 can be extended and retracted up and down in the slider 15. An inserting hole 16 is provided on the end of the slider 15 away from the rotating column 20, and a plugging column 21 matching the plugging hole 16 is fixedly connected to the connecting block 17. After the connecting block 17 slides downward and rotates ninety degrees, the plugging column 21 can be inserted into the plugging hole 16, thereby conveniently realizing the rotation of the moving piece 18. The bottom end of the connecting block 17 is rotatably connected with the moving piece 18. When the moving piece 18 is in a vertical state, the bottom plate 4 is placed on the support pedestal stone of the high-speed railway bridge pier, and the moving piece 18 is inserted into the hole on the support pedestal stone. The driving structure drives the two sliders 15 in the same hole of the support pedestal stone to slide in the opposite direction, and the moving piece 18 is used to support the inner wall of the hole, thereby achieving the effect of stably installing the column 1.

[0054] See also Figure 2-3 , Figure 6-11When measuring the horizontal settlement displacement of two adjacent high-speed railway bridge piers, the two movable plates 18 under each group of first slide grooves 13 are parallel to each other, and the length direction of the movable plates 18 is orthogonal to the first slide grooves 13. At this time, the movable plates 18 can be easily inserted into the holes of the support pad stones of the high-speed railway bridge piers after being close to each other. One side of the movable plate 18 is an arc surface and the other side is a plane, and a telescopic plate 19 is connected to the top of one side of the plane. The telescopic plate 19 is used to limit the rotation of the movable plate 18 toward one side of the telescopic plate 19. The two movable plates 18 that are close to each other and in a parallel state cannot rotate toward each other. When the movable plates 18 are in a vertical state, the arc surfaces move away from each other. When the vertical movable plate 18 is inserted into the hole on the support pad stone, the movable plate 18 moves in the opposite direction under the drive of the driving component 27, and its arc surface can stably contact with the inner wall of the hole, further improving the stability of the column 1 installed on the high-speed railway bridge pier.

[0055] See also Figure 2-3 , Figure 6-10 , Figure 12-13 After the bridge section is overlapped on the bridge pier, when the horizontal displacement of the two ends of the bridge surface is measured, the length direction of the moving piece 18 is parallel to the first slide groove 13, and the telescopic piece 19 at the top of the moving piece 18 is telescopically connected to the moving piece 18. Specifically, the telescopic piece 19 can be retracted into the inside of the moving piece 18, and a spring is arranged between the telescopic piece 19 and the inside of the moving piece 18. When the telescopic piece 19 is not subjected to a force along the sliding direction, it is in a state of extending the moving piece 18. Each group of moving pieces 18 can be relatively rotated in the opposite direction and remain parallel to the bottom plate 4, and the distance between the two ends of each group of moving pieces 18 is the same as the width of the position for installing the rail fastener on the sleeper. After the bridge section of the high-speed railway is spliced, in order to inspect the bridge To improve the splicing effect of the bridge section, four groups of columns are installed at the two ends of the bridge section respectively, and the inclination state of the bridge section is further measured to promptly discover the construction defects of excessive inclination angle after splicing. After the bridge section is overlapped, the connection state of the connecting block 17 on the slider 15 is adjusted to make the length direction of the moving piece 18 parallel to the first slide groove 13, and then the position of the moving piece 18 is adjusted to make the planes of the two moving pieces 18 close to each other correspond to each other, and then the moving piece 18 is unfolded to both sides, and the bottom plate 4 is lowered while the moving piece 18 is rotated and unfolded until it is parallel to the position where the rail fastener is installed on the high-speed railway bridge section and stuck inside it, so as to realize the stable installation of the column 1 on the bridge section, which is a stable condition for the subsequent bridge section inclination measurement.

[0056] See also Figure 2-3 , Figure 6-13The bottom surface of the bottom plate 4 is parallel to the first slide groove 13 and is provided with three second slide grooves 23. The three second slide grooves 23 are respectively arranged on both sides of the two groups of first slide grooves 13 and between the two groups of first slide grooves 13. The top of the connecting block 17 is fixedly connected with a sliding column 22 that can slide in the second slide groove 23. When the sliding column 22 at the top of the connecting block 17 is slidably connected in the second slide groove 23, the stability of the moving piece 18 can be effectively improved to prevent the moving piece 18 from rotating due to force. When the length direction of the moving piece 18 is orthogonal to the first slide groove 13, the sliding column 22 at the top of the connecting block 17 is slidably connected in the corresponding second slide groove 23. When the length direction of the moving piece 18 is parallel to the first slide groove 13, the sliding column 22 at the top of the connecting block 17 is not in the second slide groove 23. Further, a notch for accommodating the sliding column 22 is opened in the middle of the slider 15.

[0057] Embodiment 2

[0058] A bridge displacement measuring device for bridge construction, such as Figure 1-13 As shown, on the basis of Example 1, the difference from Example 1 lies in that connecting platforms 12 are arranged at the top ends of two mutually adjacent columns 1 facing each other, and the connecting platforms 12 are both threadedly connected with telescopic cylinders 11, and the two telescopic cylinders 11 are coaxially and simultaneously slidably connected in the fixed cylinder 10, and both ends of the fixed cylinder 10 are provided with fixing structures for fixing the telescopic cylinder 11, specifically, the fixing structure is a clamping piece structure for clamping the outer wall of the telescopic cylinder 11, and clamping pieces are fixedly connected at both ends of the fixed cylinder 10, and the width of the clamping pieces is greater than the diameter of the telescopic cylinder 11, and bolts are connected between the clamping pieces, and when the nuts on the bolts are tightened, the two clamping pieces clamp the outer wall of the telescopic cylinder 11 oppositely, and the telescopic cylinders 11 at both ends of the fixed cylinder 10 can adjust the length by telescoping to meet the connection requirements between the two columns 1 in different scenarios, and the two groups of columns 1 connected in combination can further improve the stability of the installation, reduce the shaking of the columns 1 or the sliding columns 2 caused by the airflow in the external environment, and thereby effectively improve the measurement accuracy of the laser measurement assembly.

[0059] See also Figure 4-6 A top cover 3 is provided at the top of the sliding column 2, and a level bubble 7 is connected to the center of the top of the top cover 3. The level bubble 7 installed on the top cover 3 is used to judge whether the sliding column 2 is in a vertical state, thereby preventing the measurement error caused by the tilt of the sliding column 2 and improving the measurement accuracy of the laser measurement component at the top of the sliding column 2.

[0060] Embodiment 3

[0061] A bridge displacement measuring device for bridge construction, such as Figure 1-13As shown, on the basis of Example 2, the difference from Example 2 is that a conical boss is provided at the top of the column 1, and a fitting sealing ring 9 is connected to the boss. Specifically, the sealing ring 9 is fixedly connected to the top of the column 1 by a pressure ring 8. The inner diameter of the sealing ring 9 is equal to the diameter of the sliding column 2, and can play a certain sealing role when the sliding column 2 is extended. The top of the sliding column 2 is provided with an annular convex edge. After the sliding column 2 is retracted into the column 1, the annular convex edge at the top can press the sealing ring 9. When the sliding column 2 is retracted into the column 1, it can also play a role in sealing the top of the column 1, effectively improving the airtightness of the internal space of the column 1, and providing good protection for the laser measurement component arranged on the top of the sliding column 2, which is beneficial to the storage and transportation of the measurement component.

[0062] The working principle of the present invention is as follows: after measuring the settlement of the first high-speed railway bridge pier that needs to overlap the bridge section, the settlement displacement of the subsequent high-speed railway bridge piers is measured in turn based on the bridge pier, the column 1 is lifted to the support pad stone of the high-speed railway bridge pier and then lowered, the two groups of moving pieces 18 under the bottom plate 4 are respectively inserted into the two connecting holes of the support pad stone, the driving assembly 27 works to make each group of moving pieces 18 slide in a direction away from each other, so as to fix the column 1, and then the telescopic cylinder 11 is connected and the sliding amount of the telescopic cylinder 11 in the fixed cylinder 10 is adjusted, so that the sliding column 2 is in a vertical state, the two sliding columns 2 on the same bridge pier are first extended and retracted up and down to adjust the height until the laser receiving end 6 receives the laser emitted from the sliding columns 2 close to each other, and then the two groups of sliding columns 2 on the two bridge piers are respectively raised and lowered synchronously until the laser receiving ends 6 at the tops of the four sliding columns 2 all receive the laser signal from the laser emitting end 5. At this time, the settlement of the high-speed railway bridge pier is conveniently calculated according to the sliding distance of each sliding column 2. After the measured adjacent high-speed railway bridge piers overlap the bridge section, the settlement displacement of the subsequent adjacent high-speed railway bridge piers is measured by analogy.

[0063] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A bridge displacement measuring device for bridge construction, comprising a column (1), characterized in that: At least one of the columns (1) is provided at both ends of the bridge to be measured. A sliding column (2) is slidably connected up and down in the column (1). A laser measurement assembly is provided at the top of the sliding column (2). The bottom end of the column (1) is fixedly connected to a base plate (4). The bottom surface of the base plate (4) is connected to a clamping structure for clamping and matching the top of the bridge. Two columns (1) are provided at both ends of the bridge to be measured. The side walls of the tops of the two sliding columns (2) close to each other are both annularly spaced and respectively provided with a laser emitting end (5) and a laser receiving end (6). The laser emitting end (5) faces the other laser receiving end (6). The bottom surface of the base plate (4) is provided with two groups of first slide grooves (13). The two first slide grooves (13) between each group of the first slide grooves (13) are parallel to each other. A slider (15) is slidably connected in each of the first slide grooves (13); a driving structure for driving the slider (15) to slide is provided in the bottom plate (4); a connecting block (17) is connected to the bottom end of the slider (15); a moving plate (18) is rotatably connected to the bottom end of the connecting block (17); the connecting block (17) is rotatably connected to one end of the slider (15) via a rotating column (20) at the top; the rotating column (20) can be extended and retracted up and down in the slider (15); a plug-in hole (16) is provided at one end of the slider (15) away from the rotating column (20); and a plug-in column (21) that cooperates with the plug-in hole (16) is fixedly connected to the connecting block (17); the connecting block (17) can slide downward and rotate ninety degrees to enable the plug-in column (21) to be inserted into the plug-in hole (16).

2. The bridge displacement measuring device for bridge construction according to claim 1, characterized in that: Connecting platforms (12) are arranged at the top ends of two mutually adjacent upright posts (1) facing each other, and the connecting platforms (12) are both threadedly connected to telescopic cylinders (11). The two telescopic cylinders (11) are coaxially and simultaneously slidably connected in the fixed cylinder (10), and both ends of the fixed cylinder (10) are provided with fixing structures for fixing the telescopic cylinders (11).

3. The bridge displacement measuring device for bridge construction according to claim 2, characterized in that: A top cover (3) is provided at the top end of the sliding column (2), and a level bubble (7) is connected to the center of the top end of the top cover (3).

4. The bridge displacement measuring device for bridge construction according to claim 1, characterized in that: A telescopic rod (26) pointing upward is fixedly connected inside the upright column (1), the top end of the telescopic rod (26) is connected to the sliding column (2), a vertical guide groove (24) is provided inside the upright column (1), and the bottom end of the sliding column (2) is connected to a guide seat (25) matching the guide groove (24).

5. The bridge displacement measuring device for bridge construction according to claim 4, characterized in that: The top of the column (1) is provided with a conical boss, and a sealing ring (9) is connected to the boss. The top of the sliding column (2) is provided with an annular convex edge, and the annular convex edge of the sliding column (2) can press the sealing ring (9).

6. The bridge displacement measuring device for bridge construction according to claim 1, characterized in that: The two movable plates (18) below each group of the first slide grooves (13) are parallel to each other, the length direction of the movable plates (18) is orthogonal to the first slide grooves (13), one side of the movable plates (18) is an arc surface and the other side is a plane, and a telescopic plate (19) is connected to the top of one side of the plane, and the telescopic plate (19) is used to limit the movable plates (18) from rotating toward one side of the telescopic plate (19), and the two movable plates (18) that are close to each other and in a parallel state cannot rotate towards each other.

7. The bridge displacement measuring device for bridge construction according to claim 1, characterized in that: The length direction of the movable sheet (18) is parallel to the first slide groove (13), and the telescopic sheet (19) at the top of the movable sheet (18) is telescopically connected to the movable sheet (18). Each group of the movable sheets (18) can be relatively rotated in the opposite direction to remain parallel to the bottom plate (4), and the distance between the two ends of each group of the movable sheets (18) is the same as the width of the position on the sleeper for installing the rail fastener.

8. The bridge displacement measuring device for bridge construction according to claim 1, characterized in that: The laser emitting end (5) and the laser receiving end (6) at the top of the sliding column (2) are arranged at an interval of ninety degrees in the circumferential direction.

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