Cofferdam device for highway bridge construction

Abstract

A cofferdam device for highway bridge construction relates to the technical field of highways and comprises a plurality of cofferdam plates, the adjacent cofferdam plates are inserted together and locked through locking mechanisms, a plurality of insertion notches are formed in two sides of each cofferdam plate, the locking mechanisms are located in the insertion notches, a dovetail insertion head is arranged at one end of each cofferdam plate, a dovetail insertion groove is formed in the other end of each cofferdam plate, and the dovetail insertion grooves are located in the dovetail insertion notches. And the dovetail plugs of the cofferdam plates can be inserted into the dovetail slots of the adjacent cofferdam plates. According to the utility model, the cofferdam plate can be quickly inserted and firmly locked, and the locking mechanism adopts a mode that the clockwise and anticlockwise threaded rods are matched with the insertion plates, so that the operation is simple and convenient, and the locking effect is reliable. And through the design that the guide holes and the insertion rods are matched with the flexible springs, rapid positioning of the locking box is achieved. Due to the self-locking function of the dovetail plugs and the slots and smooth transition of the arc-shaped connecting plates, relative movement of the cofferdam plates is effectively prevented, water flow impact is reduced, and the overall bending strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highways, in particular to a highway bridge construction cofferdam device. Background Art

[0002] As a key temporary structure in water conservancy project construction, the core function of the cofferdam is to provide a dry and stable working environment for the construction of permanent water conservancy facilities. It can effectively block the intrusion of water and soil into the construction area of ​​the building, thereby ensuring that construction workers can safely carry out drainage operations, foundation pit excavation and main construction of the building inside the cofferdam. However, traditional highway bridge construction cofferdam devices have certain limitations in design and use. These devices are usually assembled by fixed connection methods such as welding. Although the stability of the structure is guaranteed to a certain extent, it is extremely inconvenient during the installation and removal of the device. More importantly, once the welding is completed, the structure and size of the cofferdam device are relatively fixed, and it is difficult to flexibly adjust according to the actual needs of the construction site.

[0003] In response to the above problems, Chinese patent CN116290005B proposes a cofferdam device for highway bridge construction. The device consists of multiple components such as cofferdam plates, slots, extension profiles, connecting profiles, fixed hole blocks, connecting grooves, connecting convex grooves, locking mechanisms, and pulling and releasing mechanisms, forming a relatively complex structural system, but also brings complexity in manufacturing and assembly. The combined use of multiple components not only increases the difficulty and cost of manufacturing, but also prolongs the installation time of the device. At the same time, due to the complex structure, once a component is damaged or fails, professional technicians are required to repair and replace it, which undoubtedly increases the maintenance difficulty and cost of the device. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then proposes a highway bridge construction cofferdam device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A highway bridge construction cofferdam device comprises a plurality of cofferdam plates, adjacent cofferdam plates are plugged together and locked by a locking mechanism, a plurality of plug-in slots are arranged on both sides of the cofferdam plates, the plug-in slots extend inwardly to form inner slots, the locking mechanism comprises a locking box, a rotating slot is formed on the top of the locking box, a mounting cavity is arranged in the locking box, a bearing seat is arranged in the mounting cavity, a central axis is rotatably connected between two bearing seats, a rotating wheel is installed on the central axis, two sections of the central axis are respectively connected with a clockwise threaded rod and a counterclockwise threaded rod, a plug-in plate is slidably matched on both sides of the mounting cavity, a thread sleeve is arranged on the plug-in plate, the thread sleeve cooperates with the clockwise threaded rod or the counterclockwise threaded rod, and the rotation of the rotating wheel can enable the plug-in plate to be inserted into the inner slot of the adjacent cofferdam plate.

[0007] Furthermore, the plug board is provided with a mounting hole for accommodating the insertion of a clockwise threaded rod or a counterclockwise threaded rod.

[0008] Furthermore, a plurality of guide holes are provided on both sides of the plug-in slot, an insertion rod is slidably fitted in the guide hole, a flexible spring is provided between the insertion rod and the bottom of the guide hole, and a positioning insertion hole matching with the insertion rod is provided on the locking box.

[0009] Furthermore, the flexible spring can drive the insertion rod to be inserted into the positioning insertion hole.

[0010] Furthermore, the cofferdam plate is threadedly connected with a limiting bolt, and the end of the limiting bolt can extend into the inner slot and be inserted into the limiting hole on the top of the plug-in board.

[0011] Furthermore, a dovetail plug is provided at one end of the cofferdam plate, and a dovetail slot is provided at the other end, and the dovetail plug of the cofferdam plate can be inserted into the dovetail slot of the adjacent cofferdam plate.

[0012] Furthermore, arc-shaped connecting plates are provided between adjacent cofferdam plates.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model can realize the rapid plug-in and firm locking of the cofferdam plates, thereby improving the construction efficiency and the stability of the cofferdam. The locking mechanism adopts the method of clockwise and counterclockwise threaded rods in conjunction with the plug-in plate, which is easy to operate and has a reliable locking effect. The design of the guide hole and the plug-in rod in conjunction with the flexible spring realizes the rapid positioning and buffering protection of the locking box. The addition of the limit bolts further enhances the stability and safety of the device. The self-locking function of the dovetail plug and the slot and the smooth transition of the arc-shaped connecting plate effectively prevent the relative movement of the cofferdam plates, reduce the impact of water flow, and improve the overall bending strength, providing a solid and reliable cofferdam guarantee for highway bridge construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0016] Figure 3 It is a schematic diagram of the use state of the locking mechanism;

[0017] Figure 4 is a cross-sectional view of the locking mechanism;

[0018] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0019] Among them: 1 cofferdam plate, 11 dovetail plug, 12 dovetail slot, 13 plug-in slot, 14 inner slot, 2 arc-shaped connecting plate, 4 limit bolts, 5 locking mechanism, 51 locking box, 52 rotating slot, 53 bearing seat, 54 center axis, 55 rotating wheel, 56 clockwise threaded rod, 57 counterclockwise threaded rod, 58 thread sleeve, 59 plug-in plate, 510 installation socket, 511 guide hole, 512 plug rod, 513 flexible spring, 514 positioning socket. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0021] like Figure 1-Figure 5As shown, a highway bridge construction cofferdam device includes a plurality of cofferdam plates 1. Adjacent cofferdam plates are plugged together and locked by a locking mechanism 5. This design enables the cofferdam plates to be quickly and easily connected together, thereby improving construction efficiency. At the same time, the setting of the locking mechanism ensures that the connection between the cofferdam plates is firm and reliable, thereby enhancing the stability of the entire cofferdam device. A plurality of plug-in slots 13 are provided on both sides of the cofferdam plate, and the plug-in slots extend inwardly to form an inner slot 14. This structure provides a space for the locking mechanism to be inserted, so that the locking mechanism can firmly lock the cofferdam plate to prevent it from moving or dislocating during use. The locking mechanism includes a locking box 51, a rotating notch 52 is formed on the top of the locking box, a mounting cavity is provided in the locking box, a bearing seat 53 is provided in the mounting cavity, a central shaft 54 ​​is rotatably connected between the two bearing seats, a rotating wheel 55 is installed on the central shaft, two sections of the central shaft are respectively connected with a clockwise threaded rod 56 and a counterclockwise threaded rod 57, a plug-in plate 59 is slidably matched on each side of the mounting cavity, a thread sleeve 58 is provided on the plug-in plate, and the thread sleeve cooperates with the clockwise threaded rod or the counterclockwise threaded rod, and the rotation of the rotating wheel can make the plug-in plate inserted into the inner slot of the adjacent cofferdam plate. This design enables the two plug-in plates to move in opposite directions at the same time when the central shaft rotates, thereby realizing the rapid locking or unlocking of the cofferdam plate.

[0022] The scheme is refined, the top of the rotating wheel passes through the rotating slot and extends to the outside. People can manually rotate the rotating wheel to rotate the central axis.

[0023] Furthermore, the plug board is provided with a mounting hole 510 for accommodating the clockwise threaded rod 56 or the counterclockwise threaded rod, which provides a space for the threaded rod to be inserted, thereby ensuring a tight and reliable fit between the plug board and the threaded rod.

[0024] In at least one embodiment, a plurality of guide holes 511 are provided on both sides of the insertion slot, a plug rod 512 is slidably fitted in the guide hole, a flexible spring 513 is provided between the plug rod and the bottom of the guide hole, and in cooperation with the plug rod, a positioning plug hole 514 is provided on the locking box to match the plug rod. This structure enables the plug rod to be automatically inserted into or pulled out of the positioning plug hole under the action of the flexible spring, thereby realizing the rapid positioning or unlocking of the locking box.

[0025] According to a refinement of the solution, the flexible spring can drive the insertion rod to be inserted into the positioning socket.

[0026] Furthermore, the cofferdam plate is threadedly connected with a limit bolt 4, and the end of the limit bolt can extend into the inner slot and be inserted into the limit hole on the top of the plug-in board. This design enables the limit bolt to further fix the position of the plug-in board to prevent it from moving or falling off during use, thereby enhancing the stability and safety of the entire cofferdam device.

[0027] Furthermore, a dovetail plug 11 is provided at one end of the cofferdam plate, and a dovetail slot 12 is provided at the other end, and the dovetail plug of the cofferdam plate can be inserted into the dovetail slot of the adjacent cofferdam plate. This structure enables the cofferdam plates to be quickly plugged together to form a continuous cofferdam wall. At the same time, the cooperation of the dovetail plug and the dovetail slot also has a certain self-locking function, which can prevent the cofferdam plates from relative movement or falling off during use to a certain extent.

[0028] In some embodiments, arc-shaped connecting plates 2 are provided between adjacent cofferdam plates. This design makes the connection between adjacent cofferdam plates more smooth, reducing the impact and erosion of water flow on the cofferdam device. At the same time, the arc-shaped connecting plates can also enhance the bending strength and stability of the entire cofferdam device to a certain extent.

[0029] Working method: align the dovetail plug 11 of one cofferdam plate with the dovetail slot 12 of another cofferdam plate and plug them in. Repeat this step until all cofferdam plates are connected according to the predetermined shape and size. Place the locking box 51 at the connection between adjacent cofferdam plates. Make sure that the positioning socket 514 on the locking box 51 is aligned with the guide hole 511 on the cofferdam plate. Insert the plug rod 512 so that it is inserted into the positioning socket 514 under the action of the flexible spring 513, thereby fixing the position of the locking box 51. Turn the rotating wheel 55 so that it drives the central shaft 54 ​​to rotate. The clockwise threaded rod 56 and the counterclockwise threaded rod 57 on the central shaft 54 ​​will rotate at the same time, but because their thread directions are opposite, they will drive the two plug-in plates 59 to move in opposite directions. When the plug-in plates 59 move to the appropriate position, they will be inserted into the inner slots 14 of the adjacent cofferdam plates, thereby locking the cofferdam plates.

[0030] Screw the limit bolt 4 into the threaded hole on the cofferdam plate. Make sure that the end of the limit bolt 4 can extend into the inner slot 14 and be inserted into the limit hole on the top of the plug-in board 59, thereby further fixing the position of the plug-in board 59. Check whether all connections are firm and the cofferdam device is stable. If adjustment is required, loosen the locking mechanism or connector, make adjustments, and then re-tighten.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A highway bridge construction cofferdam device, characterized in that: It comprises a plurality of cofferdam plates, which are adjacent to each other and locked by a locking mechanism, a plurality of plug-in slots are arranged on both sides of the cofferdam plates, the plug-in slots extend inwardly to form inner slots, the locking mechanism comprises a locking box, a rotating slot is formed on the top of the locking box, an installation cavity is arranged in the locking box, a bearing seat is arranged in the installation cavity, a central axis is rotatably connected between two bearing seats, a rotating wheel is arranged on the central axis, two sections of the central axis are respectively connected with a clockwise threaded rod and a counterclockwise threaded rod, a plug-in plate is slidably fitted on each side of the installation cavity, a thread sleeve is arranged on the plug-in plate, the thread sleeve cooperates with the clockwise threaded rod or the counterclockwise threaded rod, and the rotation of the rotating wheel enables the plug-in plate to be inserted into the inner slot of the adjacent cofferdam plate.

2. The highway bridge construction cofferdam device according to claim 1, characterized in that: The plug board is provided with a mounting hole for accommodating the insertion of a clockwise threaded rod or a counterclockwise threaded rod.

3. The highway bridge construction cofferdam device according to claim 1 or 2, characterized in that: A plurality of guide holes are arranged on both sides of the insertion slot, an insertion rod is slidably fitted in the guide hole, a flexible spring is arranged between the insertion rod and the bottom of the guide hole, and a positioning insertion hole matching with the insertion rod is arranged on the locking box.

4. The highway bridge construction cofferdam device according to claim 3 is characterized in that: The flexible spring can drive the insertion rod to be inserted into the positioning insertion hole.

5. The highway bridge construction cofferdam device according to claim 1, characterized in that: The cofferdam plate is threadedly connected with a limiting bolt, and the end of the limiting bolt can extend into the inner slot and be inserted into the limiting hole on the top of the plug-in board.

6. The highway bridge construction cofferdam device according to claim 1, characterized in that: A dovetail plug is provided at one end of the cofferdam plate, and a dovetail slot is provided at the other end. The dovetail plug of the cofferdam plate can be inserted into the dovetail slot of the adjacent cofferdam plate.

7. The highway bridge construction cofferdam device according to claim 1, characterized in that: Arc-shaped connecting plates are provided between adjacent cofferdam plates.

Images