Cofferdam device for highway bridge construction

Abstract

The utility model discloses a highway bridge construction cofferdam device which comprises a bottom plate, a stabilizing and reinforcing mechanism, a rapid clamping mechanism and a clamping auxiliary mechanism. The stabilizing and reinforcing mechanism comprises a longitudinal plate, a fixing plate, an inclined supporting plate, a supporting rod, a reinforcing plate and a reinforcing rod; the rapid clamping mechanism comprises a clamping pipe, a clamping rod, a rubber pad, a tension spring, an extending rod, a clamping groove and a pushing block, and the clamping auxiliary mechanism comprises an upper pressing rod, a lower pressing rod, a longitudinal groove, a pressing plate, a direction spring, a threaded pipe, a rotating longitudinal rod and a lateral slope block. And due to the quick clamping design of the clamping pipes, the clamping rods and other components, connection between the inclined supporting plates and the supporting rods is quick and firm, disassembly is easy, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cofferdams, and more specifically, it relates to a cofferdam device for highway bridge construction. Background Technique

[0002] A cofferdam device for highway bridge construction is a temporary structure specifically used in highway bridge construction. When carrying out bridge pile foundation construction or other underwater operations in a water area environment, it is used to enclose the water area, isolate the construction area from the external water area, and create dry construction conditions.

[0003] In the existing technology, firstly, the structural stability of the entire system of some devices is relatively low, and it is difficult to withstand the pressure and vibration during construction. The lack of a reinforcement mechanism may cause the device to tilt or collapse during construction, increasing the construction risk. Extra measures may be needed to ensure the structural stability, which will increase the complexity and time of construction. Secondly, the connection between the connecting components of some devices is difficult, affecting the construction progress. The complication of the connection and disassembly process will reduce the construction efficiency and prolong the construction period. Finally, the clamping process of some devices is inaccurate, affecting the overall performance of the device. It may cause the clamping mechanism to displace or loosen during construction, affecting the construction safety. More complex technologies or equipment may be needed to ensure the accuracy and stability of the clamping, increasing the construction difficulty and cost. Summary of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the problems existing in the prior art, the utility model provides a cofferdam device for highway bridge construction to solve the technical problems such as the relatively low structural stability of the entire system and the reduction of construction efficiency caused by the complication of the connection and disassembly process mentioned in the background technique.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the present utility model provides the following technical solutions: A cofferdam device for highway bridge construction, including a bottom plate, a stability reinforcement mechanism, a quick clamping mechanism, and a clamping auxiliary mechanism. The stability reinforcement mechanism includes a longitudinal plate, a fixing plate, a diagonal bracing plate, a support rod, a reinforcement plate, and a reinforcement rod. The longitudinal plate is vertically installed on the side of the bottom plate, multiple groups of fixing plates are fixedly installed on the front end face of the longitudinal plate, the diagonal bracing plate is connected to the fixing plate at a certain slope, multiple groups of support rods are installed on the top end face of the bottom plate, and one end of the diagonal bracing plate is connected to the support rod through the quick clamping mechanism. The reinforcement plate is installed at the connection between the fixing plate and the diagonal bracing plate, and the reinforcement rod passes through the reinforcement plate in sequence to fix it. The quick clamping mechanism includes a clamping tube, a clamping rod, a rubber pad, a tension spring, an insertion rod, a card slot, and a push block. The rubber pad is installed at one end of the clamping rod, one end of the clamping rod extends into the interior of the clamping tube, the card slot is arranged on the side of the clamping rod, the insertion rod is horizontally movably penetrated through the side of the clamping rod, the card slot is arranged on the side of the clamping rod, the push block is installed at one end of the insertion rod, and the tension spring is arranged between the push block and the inner wall of the clamping tube.

[0008] The present utility model is further provided that the clamping auxiliary mechanism includes an upper pressing rod, a lower pressing rod, a longitudinal groove, a pressing plate, a direction spring, a threaded tube, a rotating longitudinal rod, and a lateral slope block. A moving groove is arranged on the side wall of the clamping tube, one end of the upper pressing rod is hinged to the top of the moving groove, one end of the lower pressing rod is cooperatively connected to the bottom of the moving groove, both ends of the pressing plate are cooperatively hinged to one ends of the upper pressing rod and the lower pressing rod, the direction spring is installed between the pressing plate and the insertion rod, the threaded tube is cooperatively installed on the side wall of the clamping tube, the rotating longitudinal rod is vertically connected to the threaded tube, the lateral slope block is installed on the side of the rotating longitudinal rod, and the lateral slope block can press against the upper pressing rod, so that the pressing plate cooperates with the direction spring to push the insertion rod and the push block into the card slot.

[0009] The present utility model is further provided that one end of the support rod passes through the bottom plate, and a reinforcement frame is installed on the bottom end face of the bottom, and one end of the support rod is cooperatively connected to the reinforcement frame. The support rod is installed on the top end face of the bottom plate and is connected to the diagonal bracing plate to enhance the stability of the structure.

[0010] The present utility model is further provided that a connecting plate is installed at the bottom end of the side wall of the clamping tube, mounting plates are installed on the sides of the diagonal bracing plate and the fixing plate, and the connecting plate is cooperatively connected to the top end face of the mounting plate. The mounting plate is installed on the sides of the diagonal bracing plate and the fixing plate, providing an installation interface for the device and facilitating connection with other components.

[0011] The present utility model is further provided that one end of the clamping rod is cooperatively connected to the top end of the support rod, and the other end of the support rod extends through the mounting plate and is cooperatively and quickly clamped with the clamping tube. The combination of the clamping tube and the clamping rod makes the connection between the diagonal bracing plate and the support rod fast, firm and easy to disassemble, improving the construction efficiency.

[0012] The present utility model is further configured such that moving grooves are provided on both sides of the bottom of the longitudinal groove, and both sides of the inclined pressure rod extend into the moving grooves to cooperate with sliding guidance, and a support spring is installed between the bottom of the downward pressure rod and the top of the connecting plate. The setting of the support spring facilitates the moving support of the downward pressure rod.

[0013] The present utility model is further configured such that a lateral plate is installed on the side surface of the longitudinal plate, and a connection hole is provided on the lateral plate, and multiple sets of this device are connected by bolts passing through the connection hole. The setting of the connection hole facilitates the connection of multiple sets of devices by bolts, which is convenient for expansion and combined use.

[0014] The present utility model is further configured such that a ground inserting rod is installed on the bottom end surface of the bottom plate, and the ground inserting rod can be embedded into the ground to fix the device. The ground inserting rod can be embedded into the ground to fix the entire device, improving the stability of the device.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides a cofferdam device for highway bridge construction, which has the following beneficial effects:

[0017] The present utility model is provided with a stability reinforcement mechanism. Through the combination of the longitudinal plate, the fixing plate, the inclined support plate, the support rod, the reinforcement plate and the reinforcement rod, the stability of the whole device is enhanced, ensuring safety during the construction process. The reinforcement mechanism can withstand the pressure and vibration generated during the construction process, ensuring the integrity of the structure. The stable structure makes the construction process smoother, reducing the downtime and adjustment time caused by unstable structure.

[0018] The present utility model is provided with a quick clamping mechanism. The quick clamping design of components such as the clamping pipe and the clamping rod makes the connection between the inclined support plate and the support rod fast, firm and easy to disassemble, improving the construction efficiency. The quick clamping mechanism simplifies the maintenance and adjustment process, reducing the maintenance cost and time. The firm connection ensures the stability and reliability of the device during the construction process.

[0019] The present utility model is provided with a clamping auxiliary mechanism. The combination of components such as the upward pressure rod, the downward pressure rod and the pressing plate ensures the accuracy and stability of the clamping process, improving the clamping efficiency and accuracy. The setting of components such as the direction spring and the threaded pipe provides stable support for the clamping mechanism, ensuring the stability and safety of the operation. The design of the clamping auxiliary mechanism makes the clamping process more convenient, reducing the operation difficulty and improving the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the device in the present utility model in the unused state;

[0021] Figure 2This is a schematic structural view of the device from the bottom perspective in the present utility model;

[0022] Figure 3 This is a schematic structural view of the connection mode between the diagonal bracing plate and the support rod in the present utility model;

[0023] Figure 4 This is a schematic structural view of the quick clamping mechanism and the clamping auxiliary mechanism in the present utility model;

[0024] Figure 5 This is a schematic structural view of the interior of the quick clamping mechanism and the clamping auxiliary mechanism in the present utility model.

[0025] In the figure: 1. bottom plate; 2. longitudinal plate; 3. fixing plate; 4. diagonal bracing plate; 5. support rod; 6. reinforcement plate; 7. reinforcement rod; 8. clamping tube; 9. clamping rod; 10. rubber pad; 11. tension spring; 12. extending rod; 13. card slot; 14. push block; 15. upper pressure rod; 16. lower pressure rod; 17. longitudinal groove; 18. pressing plate; 19. direction spring; 20. threaded tube; 21. rotating longitudinal rod; 22. lateral slope block; 23. reinforcement frame; 24. connecting plate; 25. mounting plate; 26. moving groove; 27. support spring; 28. lateral plate; 29. connecting hole; 30. ground inserting rod. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0027] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0028] In the present utility model, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for ease of understanding and description, "left, right" are usually the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contours of each component itself, but the above orientation terms are not used to limit the present utility model.

[0029] Please refer to Figures 1-5, a cofferdam device for highway bridge construction, comprising a bottom plate 1, a stabilizing and reinforcing mechanism, a quick clamping mechanism and a clamping assistance mechanism. The stabilizing and reinforcing mechanism includes a longitudinal plate 2, a fixing plate 3, a diagonal bracing plate 4, a support rod 5, a reinforcing plate 6 and a reinforcing rod 7. The longitudinal plate 2 is vertically installed on the side of the bottom plate 1. Multiple groups of fixing plates 3 are fixedly installed on the front end face of the longitudinal plate 2. The diagonal bracing plate 4 is connected to the fixing plate 3 at a certain inclination. Multiple groups of support rods 5 are installed on the top end face of the bottom plate 1. One end of the diagonal bracing plate 4 is connected to the support rod 5 through the quick clamping mechanism. The reinforcing plate 6 is installed at the connection of the fixing plate 3 and the diagonal bracing plate 4. The reinforcing rod 7 passes through the reinforcing plate 6 in sequence to fix it. The quick clamping mechanism includes a clamping tube 8, a clamping rod 9, a rubber pad 10, a tension spring 11, an extending rod 12, a clamping groove 13 and a pushing block 14. The rubber pad 10 is installed at one end of the clamping rod 9. One end of the clamping rod 9 extends into the interior of the clamping tube 8. The clamping groove 13 is arranged on the side surface of the clamping rod 9. The extending rod 12 is horizontally movably penetrated and arranged on the side surface of the clamping rod 9. The clamping groove 13 is arranged on the side surface of the clamping rod 9. The pushing block 14 is installed at one end of the extending rod 12. The tension spring 11 is arranged between the pushing block 14 and the inner wall of the clamping tube 8.

[0030] In this embodiment, the longitudinal plate 2 is vertically installed on the side of the bottom plate 1, the fixing plate 3 is installed on the front end face of the longitudinal plate 2. Multiple groups of support rods 5 are installed on the top of the bottom plate 1. The diagonal bracing plate 4 is connected to the fixing plate 3 at a certain angle. The reinforcing plate 6 is installed at the connection of the fixing plate 3 and the diagonal bracing plate 4 and fixed by passing the reinforcing rod 7 through it. One end of the diagonal bracing plate 4 is connected to the support rod 5 through the quick clamping mechanism, realizing the quick installation and disassembly of the connection of the stabilizing and reinforcing mechanism. One end of the clamping rod 9 is equipped with a rubber pad 10. The clamping rod 9 is inserted into the clamping tube 8. The clamping groove 13 on the clamping rod 9 is aligned with the extending rod 12. The pushing block 14 is pulled away from the clamping groove 13 under the action of the tension spring 11. The pushing block 14 is made to enter the clamping groove 13 by using the clamping assistance mechanism, and the clamping rod 9 is fixed in the clamping tube 8. The rubber pad 10 provides a buffering effect to reduce vibration.

[0031] The clamping assistance mechanism includes an upper pressing rod 15, a lower pressing rod 16, a longitudinal groove 17, a pressing plate 18, a direction spring 19, a threaded tube 20, a rotating longitudinal rod 21 and a lateral slope block 22. A moving groove 26 is arranged on the side wall of the clamping tube 8. One end of the upper pressing rod 15 is hinged to the top of the moving groove 26. One end of the lower pressing rod 16 is cooperatively connected to the bottom of the moving groove 26. Both ends of the pressing plate 18 are cooperatively hinged to one ends of the upper pressing rod 15 and the lower pressing rod 16. The direction spring 19 is installed between the pressing plate 18 and the extending rod 12. The threaded tube 20 is cooperatively installed on the side wall of the clamping tube 8. The rotating longitudinal rod 21 is perpendicularly connected to the threaded tube 20. The lateral slope block 22 is installed on the side surface of the rotating longitudinal rod 21, and the lateral slope block 22 can press on the upper pressing rod 15, enabling the pressing plate 18 to cooperate with the direction spring 19 to push the extending rod 12 and the pushing block 14 into the clamping groove 13.

[0032] In this embodiment, the rotary threaded tube 20 is rotated to adjust the position of the rotating vertical rod 21. The lateral slope block 22 presses against the upper pressing rod 15. The upper pressing rod 15 drives the pressing plate 18 to move. The pressing plate 18 acts on the extending rod 12 through the direction spring 19. The extending rod 12 and the pushing block 14 are accurately pushed into the card slot 13. The supporting spring 27 provides a moving buffer for the lower pressing rod 16. The inclined pressing rod slides in the moving slot 26 to ensure the moving direction.

[0033] Please refer to Figures 1-5 , as a supplementary implementation method of a highway bridge construction cofferdam device for the stable reinforcement mechanism, the quick clamping mechanism and the clamping auxiliary mechanism: One end of the support rod 5 passes through the bottom plate 1, and a reinforcement frame 23 is installed on the bottom end face of the bottom. One end of the support rod 5 is cooperatively connected with the reinforcement frame 23. A connecting plate 24 is installed at the bottom end of the side wall of the clamping pipe 8. Mounting plates 25 are installed on the side faces of the inclined support plate 4 and the fixing plate 3. The connecting plate 24 is cooperatively connected to the top end face of the mounting plate 25. One end of the clamping rod 9 is cooperatively connected to the top end of the support rod 5. The other end of the support rod 5 extends through the mounting plate 25 and is cooperatively and quickly clamped with the clamping pipe 8. Moving slots 26 are opened on both sides of the bottom of the longitudinal slot 17. Both sides of the inclined pressing rod extend into the moving slots 26 for sliding guidance. A supporting spring 27 is installed between the bottom of the lower pressing rod 16 and the top of the connecting plate 24. A lateral plate 28 is installed on the side face of the longitudinal plate 2. A connecting hole 29 is opened on the lateral plate 28. Multiple sets of this device are connected by bolts passing through the connecting hole 29. Inserting rods 30 are installed on the bottom end face of the bottom plate 1, and the inserting rods 30 can be embedded in the ground to fix the device.

[0034] More specifically, select a suitable construction location, check the integrity of each component, place the bottom plate 1 at the predetermined position, use the inserting rods 30 to fix the device on the ground, install the longitudinal plate 2, the fixing plate 3 and the support rod 5, connect the inclined support plate 4 to the fixing plate 3, install the reinforcement plate 6 at the connection between the fixing plate 3 and the inclined support plate 4, and fix it with the reinforcement rod 7 passing through the reinforcement plate 6. Use the quick clamping mechanism to connect the inclined support plate 4 and the support rod 5, insert the clamping rod 9 into the clamping pipe 8, and lock the pushing block 14 into the card slot 13. Use the clamping auxiliary mechanism for precise positioning, adjust the threaded tube 20, transmit the pressure through the lateral slope block 22, connect multiple device units through the connecting holes 29 on the lateral plate 28, and fix them with bolts to form a cofferdam structure in a larger range. Check the stability of all connection points to ensure the correct connection between the support rod 5 and the reinforcement frame 23. After the cofferdam is formed, bridge construction operations can be carried out. Regularly check the structural stability and connection reliability. Use the clamping auxiliary mechanism to unlock, remove the bolt connection, separate each unit, pull out the inserting rods 30, remove the bottom plate 1, clean each component, remove dirt such as mud, sort the components by category, and store them properly for future use.

[0035] In summary, when the overall device is in use or operation: when the operation of the stable reinforcement mechanism is required, the vertical plate 2 is vertically installed on the side of the bottom plate 1, the fixing plate 3 is installed on the front end face of the vertical plate 2, multiple support rods 5 are installed on the top of the bottom plate 1, the inclined support plate 4 is connected to the fixing plate 3 at a certain angle, a reinforcement plate 6 is installed at the connection between the fixing plate 3 and the inclined support plate 4, and is fixed by passing a reinforcement rod 7 through it, and the reinforcement rod 7 passes through the reinforcement plate 6 for fixation. One end of the inclined support plate 4 is connected to the support rod 5 through a quick clamping mechanism.

[0036] When the operation of the quick clamping mechanism is required to achieve quick installation and disassembly of the connection of the stable reinforcement mechanism, a rubber pad 10 is installed at one end of the clamping rod 9. The clamping rod 9 is inserted into the clamping pipe 8. The slot 13 on the clamping rod 9 is aligned with the extending rod 12. The push block 14 is pulled away from the slot 13 under the action of the tension spring 11. The push block 14 is made to enter the slot 13 by using the clamping auxiliary mechanism. The clamping rod 9 is fixed in the clamping pipe 8, and the rubber pad 10 provides a buffering effect to reduce vibration.

[0037] When the operation of the clamping auxiliary mechanism is required, the threaded pipe 20 is rotated to adjust the position of the rotating vertical rod 21. The lateral slope block 22 presses against the upper pressing rod 15. The upper pressing rod 15 drives the pressing plate 18 to move. The pressing plate 18 acts on the extending rod 12 through the direction spring 19. The extending rod 12 and the push block 14 are accurately pushed into the slot 13. The support spring 27 provides a moving buffering effect for the lower pressing rod 16. The inclined pressing rod slides in the moving slot 26 to ensure the movement direction.

[0038] Select a suitable construction location, check the integrity of each component. Place the bottom plate 1 at the predetermined position and use the ground inserting rod 30 to fix the device to the ground. Install the vertical plate 2, the fixing plate 3 and the support rod 5. Connect the inclined support plate 4 to the fixing plate 3. Install the reinforcement plate 6 at the connection between the fixing plate 3 and the inclined support plate 4, and fix it by passing the reinforcement rod 7 through the reinforcement plate 6. Use the quick clamping mechanism to connect the inclined support plate 4 and the support rod 5. Insert the clamping rod 9 into the clamping pipe 8 and lock the push block 14 into the slot 13. Use the clamping auxiliary mechanism for precise positioning. Adjust the threaded pipe 20 to transmit pressure through the lateral slope block 22. Connect multiple device units through the connection holes 29 on the lateral plate 28 and fix them with bolts to form a cofferdam structure with a larger scope. Check the stability of all connection points to ensure the correct connection of the support rod 5 and the reinforcement frame 23. After the cofferdam is formed, bridge construction operations can be carried out. Regularly check the structural stability and connection reliability. Use the clamping auxiliary mechanism to unlock, remove the bolt connection, separate each unit, pull out the ground inserting rod 30, remove the bottom plate 1, clean each component, remove dirt such as mud, sort the components by category, and store them properly for future use.

[0039] Among all the solutions mentioned above, for those involving the connection between two components, welding, the connection with bolts and nuts, bolt or screw connection, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. Whenever fixed connection is involved above, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highway bridge construction cofferdam device, comprising a base plate (1), a stabilizing reinforcement mechanism, a quick clamping mechanism and a clamping auxiliary mechanism, wherein: The stabilizing and reinforcing mechanism comprises a longitudinal plate (2), a fixed plate (3), a diagonal support plate (4), a support rod (5), a reinforcing plate (6) and a reinforcing rod (7); the longitudinal plate (2) is vertically mounted on the side of the base plate (1); a plurality of groups of fixed plates (3) are fixedly mounted on the front end surface of the longitudinal plate (2); the diagonal support plate (4) is connected to the fixed plate (3) at a certain inclination; a plurality of groups of support rods (5) are mounted on the top end surface of the base plate (1); one end of the diagonal support plate (4) is connected to the support rod (5) via the quick clamping mechanism; the reinforcing plate (6) is mounted on the fixed plate (3) The quick clamping mechanism comprises a clamping tube (8), a clamping rod (9), a rubber pad (10), a tension spring (11), an insertion rod (12), a clamping slot (13) and a push block (14); the rubber pad (10) is mounted on one end of the clamping rod (9); the clamping slot (13) is arranged on the side of the clamping rod (9); the insertion rod (12) is arranged on the side of the clamping rod (9) so as to be movable and pass through the side of the clamping rod (9); the clamping slot (13) is arranged on the side of the clamping rod (9); and the push block (14) is mounted on one end of the insertion rod (12).

2. A highway bridge construction cofferdam device according to claim 1, characterized in that: The clamping auxiliary mechanism comprises an upper pressure rod (15), a lower pressure rod (16), a longitudinal groove (17), a pressing plate (18), a direction spring (19), a threaded tube (20), a rotating longitudinal rod (21) and a lateral slope block (22); the movable groove (26) is arranged on the side wall of the clamping tube (8); one end of the upper pressure rod (15) is hinged to the top of the movable groove (26); one end of the lower pressure rod (16) is matched and connected to the bottom of the movable groove (26); two ends of the pressing plate (18) are connected to the upper pressure rod (15) and the lower pressure rod One end of the push rod (16) is hinged, a direction spring (19) is installed between the pressing plate (18) and the insertion rod (12), a threaded tube (20) is installed on the side wall of the clamping tube (8), a rotating longitudinal rod (21) is vertically connected to the threaded tube (20), a lateral slope block (22) is installed on the side of the rotating longitudinal rod (21), and the lateral slope block (22) can press the upward pressing rod (15), so that the pressing plate (18) cooperates with the direction spring (19), so that the insertion rod (12) and the push block (14) are pushed into the clamping groove (13).

3. A highway bridge construction cofferdam device according to claim 1, characterized in that: One end of the support rod (5) passes through the bottom plate (1), and a reinforcement frame (23) is installed on the bottom end surface of the bottom, and one end of the support rod (5) is cooperatively connected to the reinforcement frame (23).

4. A highway bridge construction cofferdam device according to claim 1, characterized in that: A connecting plate (24) is installed at the bottom end of the side wall of the clamping tube (8), and a mounting plate (25) is installed on the side surfaces of the diagonal support plate (4) and the fixed plate (3), and the connecting plate (24) is matched and connected to the top end surface of the mounting plate (25).

5. A highway bridge construction cofferdam device according to claim 1, characterized in that: One end of the clamping rod (9) is connected to the top end of the support rod (5), and the other end of the support rod (5) extends through the mounting plate (25) and is quickly clamped to the clamping tube (8).

6. A highway bridge construction cofferdam device according to claim 2, characterized in that: The bottom sides of the longitudinal groove (17) are provided with movable grooves (26), and the two sides of the oblique pressure rod extend into the movable grooves (26) to cooperate with the sliding guide, and the bottom of the lower pressure rod (16) and the top of the connecting plate (24) are equipped with supporting springs (27).

7. A highway bridge construction cofferdam device according to claim 1, characterized in that: A lateral plate (28) is installed on the side of the longitudinal plate (2), and a connecting hole (29) is opened on the lateral plate (28), and multiple groups of the device are connected by bolts passing through the connecting hole (29).

8. A highway bridge construction cofferdam device according to claim 1, characterized in that: A ground-insertion rod (30) is installed on the bottom end surface of the base plate (1), and the ground-insertion rod (30) can be embedded in the ground to fix the device.

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