Extra-large tonnage prefabricated box girder end formwork and installation method

Abstract

The present invention discloses an extra-large tonnage prefabricated box girder end template and an installation method, including an end template, and an inner mold cavity is opened on one side wall of the end template. The beneficial effect is that: the present invention can actively detect its own horizontal angle and vertical angle during the assembly operation through the design of the end template and the electronic level, so that the staff can quickly know whether the current installation angle of the end template is qualified, and then the end surface forming effect of the prefabricated box girder can be guaranteed. The present invention can replace the staff's electronic control to complete the spraying of the release agent before the extra-large tonnage prefabricated box girder template is used through the design of the liquid storage cavity, the winding cavity, the pump, the conveying pipe, the winding disk, the bracket, the rotating shaft, the coil spring, the carrier, the slider, the electric slide rail, the suspension frame, the nozzle and the electric push rod, thereby reducing the workload of the staff and improving the work efficiency, so that the use of the extra-large tonnage prefabricated box girder end template can be more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated box girder end formwork, in particular to an extra-large tonnage prefabricated box girder end formwork and an installation method thereof. Background Art

[0002] Box girder is a type of beam in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, similar to a box, hence the name. It can be divided into single box and multiple boxes. Box girders can be divided into small box girders, large box girders and extra-large tonnage box girders according to their size and tonnage. They can also be divided into prefabricated box girders and cast-in-place box girders according to their production type. Prefabricated box girders refer to box girders that are produced in advance and put into use later. Prefabricated box girders require a combination of multiple template structures during prefabrication. The end template refers to the template fixed at both ends of the prefabricated box girder during production. In the existing production of extra-large tonnage box girders, the end templates required still have some shortcomings.

[0003] At present, most of the existing prefabricated box girder end formworks are directly fixedly connected to the side formworks during assembly operations. Although this can meet normal use requirements, the end formworks cannot actively detect their own horizontality and verticality, so that the staff cannot quickly know whether the current installation angle of the end formwork is qualified, and thus cannot ensure the end surface forming effect of the prefabricated box girder. At the same time, most of the existing extra-large tonnage prefabricated box girder end formworks are manually sprayed with release agents on their sides by the staff before use to ensure the smoothness of subsequent demoulding operations. Since the extra-large tonnage prefabricated box girder end formworks are also large in size, the manual spraying operation method is bound to cause a large workload for the staff and low work efficiency, resulting in the inconvenient use of the extra-large tonnage prefabricated box girder end formworks. Therefore, a new type of extra-large tonnage prefabricated box girder end formwork is urgently needed to solve these problems. Summary of the invention

[0004] The purpose of the present invention is to provide a large-tonnage prefabricated box girder end template and an installation method in order to solve the above-mentioned problem.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The end formwork of a super-large tonnage prefabricated box girder comprises an end formwork, an inner mold cavity is provided on one side wall of the end formwork, end grooves are provided on both sides of the inner mold cavity, an electronic level is installed on one side wall of the end formwork, a liquid storage cavity is provided in the end formwork, a pipe winding cavity is provided on one side of the liquid storage cavity, a pump is installed on one side of the bottom end of the liquid storage cavity, a delivery pipe is installed on one side of the pump, a pipe winding disc is installed in the pipe winding cavity, brackets are arranged at both ends of the pipe winding disc, a rotating shaft is provided at the connection between the pipe winding disc and the bracket, a coil spring is installed between the pipe winding disc and the bracket, and the pipe winding disc A tube loading groove is opened inside, a carrier is provided on one side of the upper end of the end mold, a slider is provided on the lower end of the carrier, an electric slide rail is provided at the connection between the end mold and the slider, a connecting seat is installed on the upper end of the carrier, a suspension frame is installed on one side wall of the connecting seat, an articulated seat 1 is installed on one side of the lower end of the suspension frame, a nozzle is installed at the lower end of the articulated seat 1, a boss is installed on one side of the articulated seat 1, an electric push rod is installed between the boss and the nozzle, an articulated seat 2 is installed at the connection between the electric push rod and the nozzle, and an injection valve is installed on the other side of the upper end of the end mold.

[0007] Furthermore, the inner mold cavity and the end groove are both formed on the end mold, the end mold is connected to the electronic level by bolts, and the liquid storage cavity and the winding tube cavity are both formed on the end mold.

[0008] By adopting the above technical solution, the electronic level can detect the horizontal angle and vertical angle of the end mold.

[0009] Furthermore, the liquid storage chamber is connected to the pump by bolts, and the pump is plugged into the delivery pipe.

[0010] By adopting the above technical solution, the pump can convey the release agent in the liquid storage cavity through the conveying pipe.

[0011] Furthermore, the winding tube cavity is connected to the bracket via bolts, the bracket is connected to the winding tube disk via the rotating shaft, and the bracket is rotationally connected to the rotating shaft.

[0012] By adopting the above technical solution, the smooth rotation of the pipe winding disc is ensured.

[0013] Furthermore, the bracket is connected to the coil spring via a slot, and the coil spring is connected to the pipe winding disc via a slot.

[0014] By adopting the above technical solution, the coil spring can provide power for the winding operation of the pipe winding reel.

[0015] Furthermore, the pipe carrying groove is formed on the pipe winding disk, and the pipe winding disk is wound and connected with the conveying pipe.

[0016] By adopting the above technical solution, the pipe winding disc can retract and release the conveying pipe.

[0017] Furthermore, the end mold is slidably connected to the carrier, the slider is formed on the carrier, and the end mold is connected to the electric slide rail via a slot.

[0018] By adopting the above technical solution, the sliding of the carrier is smooth and stable.

[0019] Furthermore, the carrier is connected to the connecting seat via a slot, and the connecting seat is connected to the conveying pipe and the suspension frame via a slot.

[0020] By adopting the above technical solution, the connecting seat and the suspension frame can be disassembled and assembled, and the suspension frame and the nozzle and other structures can be removed after use.

[0021] Furthermore, the suspension frame is connected to the articulated seat 1 by bolts, the articulated seat 1 is hinged to the nozzle, the boss is formed on the suspension frame, the boss is hinged to the electric push rod, and the electric push rod is connected to the nozzle through the articulated seat 2.

[0022] By adopting the above technical solution, the spraying range of the nozzle can be flexibly adjusted.

[0023] The beneficial effects of the present invention are:

[0024] In order to solve the problem that the existing prefabricated box girder end templates are mostly directly fixedly connected to the side templates during assembly operations, although they can meet normal use requirements, the end templates cannot actively detect their own horizontality and verticality, so that the staff cannot quickly know whether the current installation angle of the end template is qualified, and thus cannot ensure the end surface forming effect of the prefabricated box girder, the present invention can enable the prefabricated box girder end template to actively detect its own horizontal angle and vertical angle during assembly operations through the design of the end template and the electronic level, so that the staff can quickly know whether the current installation angle of the end template is qualified, and thus can ensure the end surface forming effect of the prefabricated box girder;

[0025] In order to solve the problem that the existing extra-large tonnage prefabricated box girder end formwork is mostly manually sprayed with release agent on the side by the staff before use to ensure the smooth subsequent demoulding operation, since the extra-large tonnage prefabricated box girder end formwork is also large in size, the manual spraying operation method is bound to cause a large workload and low work efficiency for the staff, resulting in the problem that the use of the extra-large tonnage prefabricated box girder end formwork is not convenient enough, the present invention can replace the staff's electronic control to complete the spraying of the release agent before use of the extra-large tonnage prefabricated box girder formwork through the design of a liquid storage chamber, a pipe winding chamber, a pump, a conveying pipe, a pipe winding disk, a bracket, a rotating shaft, a coil spring, a carrier, a slider, an electric slide rail, a suspension frame, a nozzle and an electric push rod, thereby reducing the workload of the staff and improving the work efficiency, so that the use of the extra-large tonnage prefabricated box girder end formwork can be more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the end formwork of the extra-large tonnage prefabricated box girder of the present invention;

[0027] Figure 2 It is a main cross-sectional view of the end formwork of the extra-large tonnage prefabricated box beam of the present invention;

[0028] Figure 3 It is the end template of the extra-large tonnage prefabricated box beam of the present invention. Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 It is a left sectional view of the surrounding tube cavity in the end template of the extra-large tonnage prefabricated box beam described in the present invention.

[0030] The following are the descriptions of the reference numerals:

[0031] 1. End mold; 2. Inner mold cavity; 3. End groove; 4. Electronic level; 5. Liquid storage cavity; 6. Tube winding cavity; 7. Pump; 8. Delivery pipe; 9. Tube winding plate; 10. Bracket; 11. Rotating shaft; 12. Coil spring; 13. Tube loading groove; 14. Carrying platform; 15. Slider; 16. Electric slide rail; 17. Connecting seat; 18. Suspension frame; 19. Articulated seat 1; 20. Nozzle; 21. Boss; 22. Electric push rod; 23. Articulated seat 2; 24. Injection valve. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings:

[0033] like Figure 1-Figure 4As shown, the end formwork of the extra-large tonnage prefabricated box beam comprises an end form 1, an inner mold cavity 2 is provided on one side wall of the end form 1, end grooves 3 are provided on both sides of the inner mold cavity 2, an electronic level 4 is installed on one side wall of the end form 1, a liquid storage cavity 5 is provided in the end form 1, a pipe winding cavity 6 is provided on one side of the liquid storage cavity 5, a pump 7 is installed on one side of the bottom end of the liquid storage cavity 5, a delivery pipe 8 is installed on one side of the pump 7, a pipe winding disc 9 is installed in the pipe winding cavity 6, brackets 10 are arranged at both ends of the pipe winding disc 9, a rotating shaft 11 is provided at the connection between the pipe winding disc 9 and the bracket 10, a coil spring 12 is installed between the pipe winding disc 9 and the bracket 10, and a pipe carrying groove is provided in the pipe winding disc 9 13. A carrier 14 is provided on one side of the upper end of the end mold 1, a slider 15 is provided on the lower end of the carrier 14, an electric slide rail 16 is provided at the connection between the end mold 1 and the slider 15, a connecting seat 17 is installed on the upper end of the carrier 14, a suspension frame 18 is installed on one side wall of the connecting seat 17, an articulated seat 19 is installed on one side of the lower end of the suspension frame 18, a nozzle 20 is installed at the lower end of the articulated seat 19, a boss 21 is installed on one side of the articulated seat 19, an electric push rod 22 is installed between the boss 21 and the nozzle 20, an articulated seat 23 is installed at the connection between the electric push rod 22 and the nozzle 20, and an injection valve 24 is installed on the other side of the upper end of the end mold 1.

[0034] In this embodiment, the inner mold cavity 2 and the end groove 3 are both formed on the end mold 1, the end mold 1 is connected to the electronic level 4 by bolts, and the liquid storage cavity 5 and the winding tube cavity 6 are both formed on the end mold 1, so that the installation orientation of the end mold 1 can be verified.

[0035] In this embodiment, the liquid storage chamber 5 is connected to the pump 7 by bolts, and the pump 7 is plugged into the delivery pipe 8 to ensure smooth spraying of the release agent.

[0036] In this embodiment, the tube winding cavity 6 is connected to the bracket 10 by bolts, and the bracket 10 is connected to the tube winding disk 9 by the rotating shaft 11. The bracket 10 is rotatably connected to the rotating shaft 11 to ensure smooth rotation of the tube winding disk 9.

[0037] In this embodiment, the bracket 10 is connected to the coil spring 12 via a slot, and the coil spring 12 is connected to the pipe winding plate 9 via a slot, so as to ensure that the working effect of the coil spring 12 is stable.

[0038] In this embodiment, the tube carrying groove 13 is formed on the tube winding disk 9, and the tube winding disk 9 is wound and connected with the conveying tube 8 to ensure that the conveying tube 8 can be freely retracted and released.

[0039] In this embodiment, the end mold 1 is slidably connected to the carrier 14, the slider 15 is formed on the carrier 14, and the end mold 1 is connected to the electric slide rail 16 through a slot, so that the spraying range of the nozzle 20 can be moved and adjusted.

[0040] In this embodiment, the carrier 14 is connected to the connecting seat 17 via a slot, and the connecting seat 17 is connected to the conveying pipe 8 and the suspension frame 18 via a slot. The suspension frame 18 can be flexibly disassembled and assembled and can be removed after use.

[0041] In this embodiment, the suspension frame 18 is connected to the articulated seat 19 by bolts, the articulated seat 19 is hinged to the nozzle 20, the boss 21 is formed on the suspension frame 18, the boss 21 is hinged to the electric push rod 22, and the electric push rod 22 is connected to the nozzle 20 through the articulated seat 23, ensuring that the spraying angle of the nozzle 20 can be flexibly adjusted.

[0042] Installation method of extra-large tonnage prefabricated box girder end formwork: When in use, the staff can place the end form 1 in a suitable position and install and connect it with the side form and bottom formwork. During installation, the electronic level 4 can be used to observe the current horizontal angle and vertical tilt angle of the end form 1, so as to quickly and conveniently know whether the current installation of the end form 1 is qualified. After ensuring that the installation is qualified, the fixed connection is performed. After the connection, the staff can inject an appropriate amount of release agent into the liquid storage chamber 5 through the injection valve 24, and start the pump 7 to work through the external control unit. The pump 7 can transport the release agent in the liquid storage chamber 5 through the delivery pipe 8 to the connecting seat 17, and enter the nozzle 20 through the through hole in the suspension frame 18. The nozzle 20 sprays the release agent. During the spraying operation, the staff can start the electric push rod 22 to extend and retract through the external control unit. Operation, the electric push rod 22 can drive the nozzle 20 to adjust the angle under the action of the articulated seat 19 and the articulated seat 23, so that the spraying range of the nozzle 20 can be adjusted. While spraying, the staff can also start the electric slide rail 16 to work, and the electric slide rail 16 can drive the carrier 14 to move through the slider 15, so that the nozzle 20 can replace the staff to perform mobile spraying work. When the carrier 14 moves to one side, the conveying pipe 8 will be released and extended under the action of the pipe winding disk 9 to meet the movement of the carrier 14. When the carrier 14 returns, the pipe winding disk 9 will automatically reel the conveying pipe 8 under the action of the coil spring 12 to ensure that the return operation of the carrier 14 is smooth, so that the end template can replace the staff to complete the spraying of the release agent by electronic control, thereby improving the convenience of using the end template of the extra-large tonnage prefabricated box girder.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Extra-large tonnage prefabricated box beam end formwork, characterized by: The invention comprises an end mold (1), an inner mold cavity (2) is provided on one side wall of the end mold (1), end grooves (3) are provided on both sides of the inner mold cavity (2), an electronic level (4) is installed on one side wall of the end mold (1), a liquid storage cavity (5) is provided in the end mold (1), a tube winding cavity (6) is provided on one side of the liquid storage cavity (5), a pump (7) is installed on one side of the bottom end of the liquid storage cavity (5), a delivery pipe (8) is installed on one side of the pump (7), a tube winding disc (9) is installed in the tube winding cavity (6), brackets (10) are arranged at both ends of the tube winding disc (9), a rotating shaft (11) is provided at the connection between the tube winding disc (9) and the bracket (10), a coil spring (12) is installed between the tube winding disc (9) and the bracket (10), a tube carrying groove (13) is provided in the tube winding disc (9), and the end mold (11) is provided with a plurality of tubes. A carrier (14) is provided on one side of the upper end of the mold (1), a slider (15) is provided on the lower end of the carrier (14), an electric slide rail (16) is provided at the connection between the end mold (1) and the slider (15), a connecting seat (17) is installed on the upper end of the carrier (14), a suspension frame (18) is installed on one side wall of the connecting seat (17), an articulated seat 1 (19) is installed on one side of the lower end of the suspension frame (18), a nozzle (20) is installed at the lower end of the articulated seat 1 (19), a boss (21) is installed on one side of the articulated seat 1 (19), an electric push rod (22) is installed between the boss (21) and the nozzle (20), an articulated seat 2 (23) is installed at the connection between the electric push rod (22) and the nozzle (20), and an injection valve (24) is installed on the other side of the upper end of the end mold (1).

2. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The inner mold cavity (2) and the end groove (3) are both formed on the end mold (1); the end mold (1) is connected to the electronic level (4) via bolts; and the liquid storage cavity (5) and the winding tube cavity (6) are both formed on the end mold (1).

3. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The liquid storage chamber (5) is connected to the pump (7) via bolts, and the pump (7) is plugged into the delivery pipe (8).

4. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The winding tube cavity (6) is connected to the bracket (10) via bolts, the bracket (10) is connected to the winding tube disc (9) via the rotating shaft (11), and the bracket (10) is rotatably connected to the rotating shaft (11).

5. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The bracket (10) is connected to the coil spring (12) via a slot, and the coil spring (12) is connected to the pipe winding disc (9) via a slot.

6. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The pipe carrying groove (13) is formed on the pipe winding disk (9), and the pipe winding disk (9) is wound and connected with the conveying pipe (8).

7. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The end mold (1) is slidably connected to the carrier (14), the slider (15) is formed on the carrier (14), and the end mold (1) is connected to the electric slide rail (16) via a slot.

8. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The carrier (14) is connected to the connecting seat (17) via a slot, and the connecting seat (17) is connected to the conveying pipe (8) and the suspension frame (18) via a slot.

9. The extra-large tonnage prefabricated box girder end formwork according to claim 1 is characterized in that: The suspension frame (18) is connected to the hinged seat 1 (19) by bolts, the hinged seat 1 (19) is hinged to the nozzle (20), the boss (21) is formed on the suspension frame (18), the boss (21) is hinged to the electric push rod (22), and the electric push rod (22) is connected to the nozzle (20) by the hinged seat 2 (23).

10. A method for installing an extra-large tonnage prefabricated box girder end formwork, applied to the extra-large tonnage prefabricated box girder end formwork as claimed in any one of claims 1 to 9, characterized in that: When in use, the staff places the end mold (1) in a suitable position and installs and connects it with the side mold and bottom mold. During installation, the staff observes the horizontal angle and vertical tilt angle of the current end mold (1) through the electronic level (4), so as to conveniently and quickly know whether the current installation of the end mold (1) is qualified. After ensuring that the installation is qualified, the fixed connection is performed. After the connection, the staff injects an appropriate amount of demoulding agent into the liquid storage chamber (5) through the injection valve (24), and starts the pump (7) to work through the external control unit. The pump (7) transports the demoulding agent in the liquid storage chamber (5) through the delivery pipe (8) to the connecting seat (17), and enters the nozzle (20) through the through hole in the suspension frame (18). The nozzle (20) sprays the demoulding agent. During the spraying operation, the staff starts the electric push rod (22) to retract and retract through the external control unit, so that the electric push rod (22) is moved in the desired direction. The first articulated seat (19) and the second articulated seat (23) drive the nozzle (20) to adjust its angle, thereby adjusting the spraying range of the nozzle (20). During the spraying operation, the staff starts the electric slide rail (16) to work, and the electric slide rail (16) drives the carrier (14) to move through the slider (15), so that the nozzle (20) replaces the staff to perform the mobile spraying work. When the carrier (14) moves to one side, When the carrier (14) is moved back, the conveying pipe (8) will be released and extended under the action of the pipe winding disc (9) to meet the moving operation of the carrier (14). When the carrier (14) returns, the pipe winding disc (9) will automatically reel in the conveying pipe (8) under the action of the coil spring (12) to ensure smooth return operation of the carrier (14), thereby allowing the end mold (1) plate to replace the staff to complete the spraying of the release agent by electronic control, thereby improving the convenience of use of the end mold (1) plate of the extra-large tonnage prefabricated box girder.

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