Pier cofferdam device for bridge construction

Abstract

The utility model relates to a pier cofferdam device for bridge construction, and belongs to the technical field of bridge construction devices. The pier cofferdam device for bridge construction comprises a plurality of guide columns, a plurality of water baffles and two supporting frames. A plurality of connecting mechanisms, wherein the connecting mechanisms are arranged; the fixing rods of the two adjacent water baffles are connected with the U-shaped frame in a clamped mode, the two adjacent water baffles can form a whole, the abutting plates can be pushed to abut against the opposite sides of the U-shaped frame by rotating the first bolts, gaps between the two sides of the U-shaped frame and the inner walls of the U-shaped rods are avoided, and the water blocking effect is improved. And after the abutting plate abuts against one side of the U-shaped frame, four reinforcing rods at the bottom end of the mounting plate are connected with two second fixing holes and two first fixing holes in a clamped mode, the abutting plate and the U-shaped frame can form a whole, and therefore the abutting stability of the abutting plate and the U-shaped frame is enhanced, and the service life of the U-shaped frame is prolonged. Therefore, the cofferdam effect after a plurality of water baffles are combined is ensured.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, and in particular to a bridge pier cofferdam device for bridge construction. Background Technology

[0002] In bridge construction, when the piers and abutment foundations are below the surface water level, cofferdams need to be built. These cofferdams enclose a certain area of ​​water, blocking water from the outside and isolating the pier construction area from the surrounding water. This creates a water-free construction zone inside the cofferdam, ensuring the smooth progress of pier foundation construction or repair. Currently, most existing cofferdam systems consist of multiple water-retaining steel plates joined together. These plates are assembled by interlocking adjacent plates.

[0003] However, after multiple water-retaining steel plates are installed by interlocking, there will be gaps between two adjacent water-retaining steel plates when they are interlocked. This can easily lead to leakage between two adjacent water-retaining steel plates during the use of the device, thus affecting the effect of the cofferdam. Utility Model Content

[0004] Therefore, it is necessary to provide a bridge pier cofferdam device to address the problem that gaps may exist when two adjacent water-retaining steel plates are fastened together, which can easily lead to leakage between the two adjacent water-retaining steel plates during the use of the device, thereby affecting the cofferdam effect.

[0005] It includes: multiple guide columns, multiple baffles, and two support frames; multiple connecting mechanisms, each connecting mechanism including a U-shaped frame fixedly installed on one side of the baffle, a U-shaped rod fixedly connected to the other side of the baffle, a fixing rod fixedly connected to the inner top wall of the U-shaped rod, a retaining plate slidably connected to both sides of the inner wall of the U-shaped rod, two movable plates slidably connected to the inner top wall of the U-shaped rod, the bottom ends of the two movable plates being fixedly connected to the top ends of the two retaining plates respectively, and a first bolt threadedly connected to the upper ends of both sides of the U-shaped rod, one end of the first bolt being rotatably connected to one side of the corresponding movable plate.

[0006] In one embodiment, the connecting mechanism further includes two mounting plates installed on the top of the U-shaped rod. Each mounting plate has a reinforcing rod fixedly connected to its bottom four corners. The top of the U-shaped frame has four first fixing holes, and the top of the abutment plate has two second fixing holes. The mounting plates are installed on the U-shaped rod by two second bolts.

[0007] In one embodiment, contact pads are fixedly connected to opposite sides of the two abutment plates, and multiple evenly distributed grooves are formed on opposite sides of the two contact pads. After the abutment plates are pressed against one side of the U-shaped frame, the four reinforcing rods at the bottom of the mounting plate are engaged with the two second fixing holes and two of the first fixing holes, which helps to form an integral unit between the abutment plates and the U-shaped frame, thereby enhancing the stability of the abutment plates against the U-shaped frame.

[0008] In one embodiment, the four first fixing holes are arranged in a rectangular pattern, and the overall shape of the first fixing holes and the overall shape of the second fixing holes are the same as the overall shape of the reinforcing rod. This helps to improve the sealing effect when the clamping plate clamps against the U-shaped frame.

[0009] In one embodiment, the two sides of the contact pad form an angle with the vertical plane. This improves the protective effect of the contact pad and ensures the stability of the reinforcing rod when it is fixed to the first and second fixing holes.

[0010] In one embodiment, a washer, which is a rubber frame, is provided between the second bolt and the mounting plate. This increases the stability of the second bolt during fixing and prevents it from loosening later.

[0011] In one embodiment, the overall shape of the fixing rod matches the overall shape of the U-shaped frame slot. This helps ensure stability when the fixing rod is engaged with the U-shaped frame. Beneficial effects

[0012] 1. In the above-mentioned connection mechanism, by engaging the fixing rods of two adjacent water-retaining plates with the U-shaped frame, it is beneficial to form an integral unit between the two adjacent water-retaining plates. By rotating the first bolt, it is beneficial to push the clamping plate to abut against the opposite side of the U-shaped frame, avoiding gaps between the two sides of the U-shaped frame and the inner wall of the U-shaped rod. This avoids gaps between the two adjacent water-retaining plates after installation. After the clamping plate abuts against one side of the U-shaped frame, the four reinforcing rods at the bottom of the mounting plate engage with the two second fixing holes and two of the first fixing holes, which helps to form an integral unit between the clamping plate and the U-shaped frame. This strengthens the stability of the clamping between the clamping plate and the U-shaped frame, thus ensuring the cofferdam effect after the combination of multiple water-retaining plates.

[0013] 2. By setting contact pads, when the abutting plate and the opposite side of the U-shaped frame are pressed together, the contact pads are in close contact with the surface of the U-shaped frame, which helps to improve the sealing effect when the abutting plate presses against the U-shaped frame. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection mechanism structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the U-shaped rod of this utility model;

[0018] Figure 4 This is an exploded view of the clamping plate and U-shaped rod of this utility model;

[0019] Figure 5 This is a schematic diagram of the U-shaped frame structure of this utility model.

[0020] Figure label:

[0021] 100, Guide post; 200, Water baffle; 300, Support frame; 400, Connecting mechanism; 410, U-shaped frame; 420, U-shaped rod; 421, Abutting plate; 422, Contact pad; 423, Moving plate; 424, First bolt; 430, Fixing rod; 440, Mounting plate; 441, Second bolt; 442, Reinforcing rod; 443, First fixing hole; 444, Second fixing hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0027] The following is combined Figures 1-5 This invention describes a bridge pier cofferdam device for bridge construction.

[0028] In one embodiment, a bridge pier cofferdam device for bridge construction includes: multiple guide columns 100, multiple water-retaining plates 200, and two support frames 300; multiple connecting mechanisms 400, each connecting mechanism 400 including a U-shaped frame 410 fixedly installed on one side of the water-retaining plate 200, a U-shaped rod 420 fixedly connected to the other side of the water-retaining plate 200, a fixing rod 430 fixedly connected to the inner top wall of the U-shaped rod 420, abutting plates 421 slidably connected to both sides of the inner wall of the U-shaped rod 420, and two movable plates 423 slidably connected to the inner top wall of the U-shaped rod 420, the bottom ends of the two movable plates 423 being fixedly connected to the top ends of the two abutting plates 421 respectively, and a first bolt 424 threadedly connected to the upper ends of both sides of the U-shaped rod 420, one end of the first bolt 424 being rotatably connected to one side of the corresponding movable plate 423.

[0029] It should be noted that the multiple guide columns 100, multiple water-retaining plates 200, and two support frames 300 are all steel components. Four of the multiple water-retaining plates 200 have their surfaces bent into arc shapes. When installing the multiple water-retaining plates 200, the four water-retaining plates with their surfaces bent into arc shapes are installed at the four corners, so that the four corners of the cofferdam formed by the multiple water-retaining plates 200 are arc-shaped. After the multiple water-retaining plates 200 are installed and the cofferdam is formed, the overall shape of the support frame 300 matches the overall shape of the inside of the cofferdam.

[0030] In this embodiment, the inner top wall of the U-shaped rod 420 is provided with a moving groove that matches the two moving plates 423, and the inner wall of the moving plate 423 is slidably connected to the surface of the moving groove.

[0031] like Figure 2 and Figure 3 As shown, the connecting mechanism 400 also includes two mounting plates 440 installed on the top of the U-shaped rod 420. The bottom four corners of the mounting plate 440 are fixedly connected with reinforcing rods 442. The top of the U-shaped frame 410 has four first fixing holes 443, and the top of the abutting plate 421 has two second fixing holes 444. The mounting plate 440 is installed on the U-shaped rod 420 by two second bolts 441.

[0032] In this embodiment, the top end of the U-shaped rod 420 is provided with a threaded hole that matches the second bolt 441. The surface of the reinforcing rod 442 is slidably connected to the inner wall of the U-shaped rod 420. When the fixing rod 430 and the U-shaped frame 410 are installed, the threaded connection between the second bolt 441 and the threaded hole is released, so that the reinforcing rod 442 can be taken out from the U-shaped rod 420 through the mounting plate 440.

[0033] When the clamping plate 421 is clamped against one side of the U-shaped frame 410, the rectangular distribution formed by the two second fixing holes 444 at the top of the clamping plate 421 and the two first fixing holes 443 near the clamping plate 421 matches the rectangular distribution formed by the four reinforcing rods 442 at the bottom of the mounting plate 440.

[0034] like Figure 4 As shown, contact pads 422 are fixedly connected to the opposite sides of the two abutting plates 421, and multiple evenly distributed grooves are provided on the opposite sides of the two contact pads 422.

[0035] In this embodiment, the contact pad 422 is a rubber component with corrosion-resistant properties. When the clamping plate 421 is pressed against one side of the U-shaped frame 410, the surface of the contact pad 422 is pressed against one side of the U-shaped frame 410.

[0036] like Figure 3 , Figure 4 and Figure 5 As shown, the four first fixing holes 443 are arranged in a rectangular shape, and the overall shape of the first fixing holes 443 and the overall shape of the second fixing holes 444 are the same as the overall shape of the reinforcing rod 442. An angle is formed between the two sides of the contact pad 422 and the vertical plane.

[0037] In this embodiment, the bottom end of the reinforcing rod 442 is curved into an arc shape. When multiple reinforcing rods 442 enter the corresponding first fixing hole 443 or second fixing hole 444, the surface of the reinforcing rod 442 is in contact with the inner wall of the first fixing hole 443 or the inner wall of the second fixing hole 444.

[0038] like Figure 3 As shown, a gasket is provided between the second bolt 441 and the mounting plate 440, and the gasket is a rubber frame.

[0039] In this embodiment, the gasket can increase the friction between the bottom end of the second bolt 441 nut and the top end of the mounting plate 440, thereby increasing the stability of the second bolt 441 when it is fixed and making it less likely to loosen later.

[0040] like Figure 2 and Figure 3 As shown, the overall shape of the fixing rod 430 matches the overall shape of the through groove of the U-shaped frame 410.

[0041] In this embodiment, when two adjacent baffles 200 are installed, when the fixing rod 430 of one baffle 200 enters the U-shaped frame 410 of the other baffle 200, one baffle 200 is in contact with the opposite side of the U-shaped frame 410.

[0042] Working Principle: When installing the bridge pier cofferdam, multiple guide columns 100 are installed first. After installation, multiple water-retaining plates 200 are installed. During installation, one water-retaining plate 200 is fixed in a designated area, and another water-retaining plate 200 is held by a robotic arm. The fixing rod 430 of the other water-retaining plate 200 is aligned with the through groove of the U-shaped frame 410 of one of the water-retaining plates 200. After alignment, the other water-retaining plate 200 is moved downward, causing the surface of the fixing rod 430 to move downward along the inner wall of the U-shaped frame 410. After the movement is completed, the surface of the fixing rod 430 is in contact with the inner wall of the U-shaped frame 410, and the U-shaped frame 410 is located inside the U-shaped rod 420, thus completing the connection of the two water-retaining plates 200. The connection and installation of multiple water-retaining plates 200 are completed in the same manner. After forming a cofferdam, workers then sequentially drive the two first bolts 424 on multiple U-shaped rods 420 to rotate. When the first bolts 424 rotate, they push the abutment plate 421 to move through the moving plate 423, thereby causing the abutment plate 421 to drive the corresponding contact pad 422 to press against one side of the U-shaped frame 410. After pressing, the four reinforcing rods 442 at the bottom of the corresponding mounting plate 440 are inserted into the corresponding two second fixing holes 444 and two first fixing holes 443, and the mounting plate 440 and U-shaped rods 420 are installed by the two second bolts 441, thereby making the abutment plate 421 and the U-shaped frame 410 a single unit. The pressing operation of multiple abutment plates 421 and U-shaped frames 410 is completed in the above manner. After the above operation is completed, two support frames 300 are installed on the inner side of the cofferdam to reinforce the cofferdam.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A bridge pier cofferdam device for bridge construction, characterized in that, include: Multiple guide columns (100), multiple water baffles (200) and two support frames (300); Multiple connecting mechanisms (400) are provided. Each connecting mechanism (400) includes a U-shaped frame (410) fixedly installed on one side of a baffle plate (200). A U-shaped rod (420) is fixedly connected to the other side of the baffle plate (200). A fixing rod (430) is fixedly connected to the inner top wall of the U-shaped rod (420). A retaining plate (421) is slidably connected to both sides of the inner wall of the U-shaped rod (420). Two movable plates (423) are slidably connected to the inner top wall of the U-shaped rod (420). The bottom ends of the two movable plates (423) are fixedly connected to the top ends of the two retaining plates (421) respectively. A first bolt (424) is threadedly connected to the upper ends of both sides of the U-shaped rod (420). One end of the first bolt (424) is rotatably connected to one side of the corresponding movable plate (423).

2. The bridge pier cofferdam device for bridge construction according to claim 1, characterized in that, The connecting mechanism (400) also includes two mounting plates (440) installed on the top of the U-shaped rod (420). The bottom four corners of the mounting plate (440) are fixedly connected with reinforcing rods (442). The top of the U-shaped frame (410) has four first fixing holes (443), and the top of the abutting plate (421) has two second fixing holes (444). The mounting plate (440) is installed on the U-shaped rod (420) by two second bolts (441).

3. The bridge pier cofferdam device for bridge construction according to claim 1, characterized in that, Each of the two abutting plates (421) is fixedly connected to a contact pad (422) on its opposite side, and each of the two contact pads (422) has a plurality of evenly distributed grooves on its opposite side.

4. The bridge pier cofferdam device for bridge construction according to claim 2, characterized in that, The four first fixing holes (443) are arranged in a rectangular shape. The overall shape of the first fixing hole (443) and the overall shape of the second fixing hole (444) are the same as the overall shape of the reinforcing rod (442).

5. The bridge pier cofferdam device for bridge construction according to claim 3, characterized in that, The two sides of the contact pad (422) form an angle with the vertical plane.

6. The bridge pier cofferdam device for bridge construction according to claim 2, characterized in that, A gasket is provided between the second bolt (441) and the mounting plate (440), and the gasket is a rubber frame.

7. The bridge pier cofferdam device for bridge construction according to claim 1, characterized in that, The overall shape of the fixing rod (430) matches the overall shape of the through groove of the U-shaped frame (410).

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