Improved cast-in-place box girder wing plate template

Abstract

The utility model relates to the technical field of wing plate formworks, in particular to an improved cast-in-place box girder wing plate formwork which comprises a base, a box girder wing plate formwork structure and wing plate formworks, a telescopic mechanism is arranged in the wing plate formwork located at the foremost end, and the telescopic mechanism comprises a hollow plate in sliding connection with the interior of the wing plate formwork. An air cylinder is installed in the hollow plate, an inclined block is fixed to the output end of the air cylinder, springs are fixed to the four corners of the hollow plate, base plates capable of extending out of the hollow plate are fixed to the tops of the springs, and the hollow plate is pulled out of the interior of the wing plate formwork through a pull groove in the bottom of the hollow plate to increase the pouring width. The output end of the air cylinder extends out to drive the inclined block to move, the bottom of the base plate is inclined, so that when the inclined block moves, the base plate is forced to rise, then the spring is lengthened, and the base plate and the wing plate formwork can be kept at the same horizontal height by rising the base plate.

Description

Technical Field

[0001] This utility model relates to the field of wing plate formwork technology, and in particular to an improved cast-in-place box girder wing plate formwork. Background Technology

[0002] In bridge construction, reinforced concrete box girders are divided into precast box girders and cast-in-place box girders. Among them, cast-in-place box girders play an important role in bridge construction due to their advantages such as simple shape, high torsional stiffness, good integrity, and strong applicability. Cast-in-place box girders are mostly used in the construction of large continuous bridges. The construction process is as follows: foundation construction—support installation—bottom formwork installation—support pre-stressing—pre-stressing unloading—adjusting the bottom formwork elevation—installation of bottom slab and web reinforcement and prestressing—installation of side formwork and inner formwork (box chamber formwork)—pouring bottom slab and web concrete—removal of inner formwork—installation of top slab reinforcement and prestressing—pouring top slab concrete—curing—tensioning—grouting of ducts—end sealing—support removal.

[0003] A search revealed that utility model patent application number CN219364358U discloses an "improved cast-in-place box girder wing plate template," which is a support assembly consisting of a connecting shaft, a collar, a first support plate, and a second support plate. In use, a crane can apply an upward pulling force to the first wing plate template, causing the first, second, and third wing plate templates and a rotating plate to rotate around a rotating block. Then, the first and second support plates are rotated around the connecting shaft via the collar to be removed from the receiving slot, and the second support plate is slid along the inside of the first support plate to the fixed shaft until the fixed shaft engages with the locking block. After the lengths of the first and second support plates are adjusted, they are fixed through threaded holes, thus supporting the first, second, and third wing plate templates. After the template is used, the above steps are reversed, facilitating template installation and disassembly, improving assembly efficiency, and the integrated template structure also facilitates transportation. However, in actual production, the width of the box girder wing plate varies with the size of the box girder, and this template cannot flexibly change its length according to the width of the wing plate. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the prior art by proposing an improved cast-in-place box girder wing plate formwork.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an improved cast-in-place box girder wing plate template, comprising: a base, a box girder wing plate template structure, and a wing plate template. The wing plate template at the foremost end is provided with a telescopic mechanism inside. The telescopic mechanism includes a hollow plate slidably connected inside the wing plate template. A cylinder is installed inside the hollow plate. An inclined block is fixed to the output end of the cylinder. Springs are fixed at the four corners of the hollow plate. A pad that can extend out of the hollow plate is fixed to the top of the spring.

[0006] As a further embodiment of this utility model, a maintenance mechanism is provided on the outside of the base. The maintenance mechanism includes a support frame, which is composed of a water tank and an eaves. The base is fixed inside the support frame, and the water tank stores clean water.

[0007] As a further embodiment of this utility model, a groove is provided on the top of the base, a waterproof box is installed on the side wall of the base, a forward and reverse motor is installed inside the waterproof box, a threaded rod is rotatably connected to the inside of the groove and a threaded block is slidably connected to it, the threaded rod passes through the threaded block and is rotatably connected to the threaded block, a nozzle is installed on the top of the threaded block, and the output end of the forward and reverse motor is fixedly connected to one end of the threaded rod.

[0008] As a further embodiment of this utility model, a water pump is installed inside the support frame, and the water pump is connected to a retractable water pipe.

[0009] As a further embodiment of this invention, the end of the water pipe is located inside the water tank, and the front end of the water pipe is connected to the nozzle.

[0010] As a further embodiment of this utility model, the support frame is provided with a water leakage hole inside, and the water leakage hole extends into the interior of the water tank.

[0011] As a further embodiment of this utility model, casters are inserted at the four corners of the bottom of the support frame, and the support frame is equipped with a power supply for the forward and reverse motors and the water pump.

[0012] As a further embodiment of this invention, the water tank is provided with a water inlet, which is sealed by a sealing plug.

[0013] The improved cast-in-place box girder flange formwork proposed in this utility model has the following advantages:

[0014] 1. Through the telescopic mechanism, when the width of the cast-in-place box girder flange is large, the hollow slab is pulled out from the inside of the flange template through the groove at the bottom of the hollow slab to increase the casting width. Then, the output end of the cylinder extends and drives the inclined block to move. Since the bottom of the pad is inclined, the inclined block will force the pad to rise when it moves, and then the spring will be stretched. Raising the pad helps to keep the pad and the flange template at the same level. When the telescopic mechanism is not in use, the cylinder moves the inclined block in the opposite direction, and then the pad descends under the reset action of the spring. After that, the hollow slab can be retracted back into the inside of the flange template.

[0015] 2. Through the set-up curing mechanism, the water tank stores clean water. The box girder wing plate formwork structure and the cast-in-place concrete need to be watered regularly for curing. When the forward and reverse motors and water pumps are started, the forward and reverse motors will drive the threaded rod to rotate back and forth in the forward and reverse directions. When the threaded rod rotates back and forth, it will drive the threaded block to slide back and forth in the groove, which will in turn drive the nozzle to move back and forth at the bottom of the box girder wing plate formwork structure. The water pump will pump the water in the water tank through the water pipe to the inside of the nozzle, and then spray it back and forth at the bottom of the box girder wing plate formwork structure to achieve water curing of the concrete. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0017] Figure 2 This is a schematic diagram of the box girder flange template structure proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the hollow plate proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure at point A proposed in this utility model.

[0020] In the diagram: 1. Base; 2. Box girder wing plate template structure; 3. Wing plate template; 4. Hollow plate; 5. Cylinder; 6. Inclined block; 7. Spring; 8. Pad plate; 9. Support frame; 11. Water tank; 12. Eaves; 13. Groove; 14. Waterproof box; 15. Forward and reverse motor; 16. Threaded rod; 17. Threaded block; 18. Nozzle; 19. Water pump; 20. Water pipe; 21. Drain hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] An improved cast-in-place box girder flange formwork includes: a base 1, a box girder flange formwork structure 2, and flange formwork 3. The flange formwork 3 at the foremost end has an internal telescopic mechanism. This mechanism includes a hollow plate 4 slidably connected inside the flange formwork 3. A cylinder 5 is installed inside the hollow plate 4, and a wedge 6 is fixed to the output end of the cylinder 5. Springs 7 are fixed at the four corners of the hollow plate 4, and pads 8 that can extend out of the hollow plate 4 are fixed to the top of the springs 7. When the width of the cast-in-place box girder flange is large, the mechanism utilizes the grooves at the bottom of the hollow plate 4... Hollow plate 4 is pulled out from inside the wing plate template 3. Then, the output end of cylinder 5 extends and drives the inclined block 6 to move. Since the bottom of pad 8 is inclined, the inclined block 6 will force pad 8 to rise when it moves, and then spring 7 will be stretched. Raising pad 8 helps to keep pad 8 at the same level as wing plate template 3. When the telescopic mechanism is not in use, cylinder 5 moves in the opposite direction with inclined block 6. Then, under the reset action of spring 7, pad 8 descends, and then hollow plate 4 can be retracted back into the wing plate template 3.

[0024] Furthermore, a maintenance mechanism is provided on the outside of the base 1. The maintenance mechanism includes a support frame 9, which consists of a water tank 11 and an eaves 12. The base 1 is fixed inside the support frame 9. The water tank 11 stores clean water and has an inlet. The inlet is sealed by a sealing plug. Universal wheels are inserted at the four corners of the bottom of the support frame 9. The universal wheels can be installed or removed according to the site conditions. The support frame 9 is equipped with a power supply to power the forward and reverse motor 15 and the water pump 19.

[0025] Next, a groove 13 is provided on the top of the base 1, and a waterproof box 14 is installed on the side wall of the base 1. A forward and reverse motor 15 is installed inside the waterproof box 14. A threaded rod 16 is rotatably connected to the inside of the groove 13 and a threaded block 17 is slidably connected to it. The threaded rod 16 passes through the threaded block 17 and is rotatably connected to the threaded block 17. A nozzle 18 is installed on the top of the threaded block 17. The output end of the forward and reverse motor 15 is fixedly connected to one end of the threaded rod 16. A water pump 19 is installed inside the support frame 9. The water pump 19 is connected to a retractable water pipe 20. The end of the water pipe 20 is located inside the water tank 11, and the front end of the water pipe 20 is connected to the nozzle 18. A water leakage hole 21 is provided inside the support frame 9, and the water leakage hole 21 extends into the inside of the water tank 11.

[0026] It can be concluded that when the forward and reverse motor 15 and water pump 19 are started, the forward and reverse motor 15 will drive the threaded rod 16 to reciprocate in both directions. When the threaded rod 16 reciprocates, it will drive the threaded block 17 to slide back and forth in the groove 13, thereby driving the nozzle 18 to move back and forth at the bottom of the box girder wing plate formwork structure 2. The water pump 19 will pump the water in the water tank 11 through the water pipe 20 into the nozzle 18, and then spray it back and forth at the bottom of the box girder wing plate formwork structure 2 through the nozzle 18 to achieve water curing of concrete. Since the optimal setting temperature of concrete is 12-25 degrees Celsius, this curing mechanism is usually used in summer. By spraying water, the temperature of the formwork is reduced, and then the low temperature of the formwork is transferred to the concrete, which helps to reduce the setting time of the concrete. At the same time, water spraying can also reduce the light temperature of the formwork to protect it. After spraying, the dripping water will return to the water tank 11 through the drain hole 21, and then return to the nozzle 18 under the action of the water pump 19 to achieve water recycling.

[0027] It should be noted that the box girder wing plate formwork structure 2 is made of aluminum alloy. The assembly and disassembly of aluminum formwork is more efficient than traditional steel and wood formwork. Only one type of material is used in the construction of aluminum formwork. Compared with steel frame wood formwork, aluminum formwork has higher construction accuracy and joint accuracy, resulting in higher construction efficiency. The aluminum formwork itself is relatively lightweight, making it convenient for workers to operate. The efficiency is significantly improved compared to steel and wood formwork. The aluminum formwork has good overall integrity, is not easily deformed during operation, and has a high turnover rate.

[0028] Working principle: Through the telescopic mechanism, when the width of the cast-in-place box girder flange is large, the hollow plate 4 is pulled out from inside the flange template 3 via the groove at the bottom of the hollow plate 4 to increase the casting width. Then, the output end of the cylinder 5 extends, driving the inclined block 6 to move. Because the bottom of the pad 8 is inclined, the inclined block 6 forces the pad 8 to rise during movement, and the spring 7 is stretched. Raising the pad 8 helps to keep it at the same horizontal level as the flange template 3. When the telescopic mechanism is not in use, the cylinder 5 moves the inclined block 6 in the opposite direction, and then the pad 8 descends under the reset action of the spring 7. The hollow plate 4 can then be retracted back into the flange template 3. Through the curing mechanism, the water tank 11 stores clean water. The box girder flange template structure 2 and the cast-in-place concrete need to be regularly watered for curing. The forward and reverse motors 15 and 19 are started. When the forward and reverse motors 15 start, they drive the threaded rod 16 to reciprocate in both directions. The reciprocating rotation of the threaded rod 16 drives... The threaded block 17 slides back and forth in the groove 13, thereby driving the nozzle 18 to move back and forth at the bottom of the box girder wing plate formwork structure 2. The water pump 19 draws water from the water tank 11 through the water pipe 20 into the nozzle 18, and then sprays it back and forth at the bottom of the box girder wing plate formwork structure 2 through the nozzle 18 to achieve water curing of concrete. Since the optimal setting temperature of concrete is 12-25 degrees, this curing mechanism is usually used in summer. By spraying water, the temperature of the formwork is reduced, and then the low temperature of the formwork is transferred to the concrete. The temperature is controlled between 12-25 degrees, which helps to reduce the setting time of the concrete. At the same time, water spraying can also reduce the light temperature of the formwork to protect it. The water dripping after spraying returns to the inside of the water tank 11 through the drain hole 21, and then returns to the nozzle 18 under the action of the water pump 19 to achieve water recycling. The eaves 12 can prevent the dripping water from flowing out. Another function of the drain hole 21 is to prevent large impurities at the bottom of the formwork from entering the water tank 11 with the water.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. Improved formwork for cast-in-place box girder flanges, including: The base (1), box girder wing plate template structure (2), and wing plate template (3) are characterized in that: the wing plate template (3) located at the front end is provided with a telescopic mechanism, the telescopic mechanism includes a hollow plate (4) slidably connected inside the wing plate template (3), a cylinder (5) is installed inside the hollow plate (4), an inclined block (6) is fixed at the output end of the cylinder (5), a spring (7) is fixed at the four corners of the hollow plate (4), and a pad (8) that can extend out of the hollow plate (4) is fixed at the top of the spring (7).

2. The improved cast-in-place box girder flange formwork according to claim 1, characterized in that, The base (1) is provided with a maintenance mechanism on its exterior. The maintenance mechanism includes a support frame (9), which is composed of a water tank (11) and an eaves (12). The water tank (11) contains clean water.

3. The improved cast-in-place box girder flange formwork according to claim 1, characterized in that, The base (1) has a groove (13) on its top and a waterproof box (14) installed on the side wall of the base (1). A forward and reverse motor (15) is installed inside the waterproof box (14). A threaded rod (16) is rotatably connected inside the groove (13) and a threaded block (17) is slidably connected thereto. The threaded rod (16) passes through the threaded block (17) and is rotatably connected to the threaded block (17). A nozzle (18) is installed on the top of the threaded block (17).

4. The improved cast-in-place box girder flange formwork according to claim 2, characterized in that, A water pump (19) is installed inside the support frame (9), and the water pump (19) is connected to a retractable water pipe (20).

5. The improved cast-in-place box girder flange formwork according to claim 4, characterized in that, The end of the water pipe (20) is located inside the water tank (11), and the front end of the water pipe (20) is connected to the nozzle (18).

6. The improved cast-in-place box girder flange formwork according to claim 2, characterized in that, The support frame (9) is provided with a water leakage hole (21) inside, which extends into the interior of the water tank (11).

7. The improved cast-in-place box girder flange formwork according to claim 2, characterized in that, The support frame (9) is equipped with casters at the four corners of its bottom and a power supply for the forward and reverse motor (15) and the water pump (19).

8. The improved cast-in-place box girder flange formwork according to claim 2, characterized in that, The water tank (11) is provided with a water inlet, which is sealed by a sealing plug.

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