Tensioning and grouting device for bridge construction based on sensing technology

Abstract

The utility model provides a kind of tensioning and grouting device for bridge construction based on sensing technology, it is related to tensioning and grouting field for bridge construction, and it includes: remove and hoist device and grouting component, the remove and hoist device includes counterweight pedestal, and the upper end of counterweight pedestal is connected with stand, and the upper end of stand is connected with mounting plate, the downside of mounting plate is connected with steel cable, and the lower end of steel cable is connected with fixing device, the fixing device includes horizontal plate and vertical board, and horizontal plate is connected on vertical board upper end, and vertical board inside is equipped with intelligent jack, while intelligent jack outside is connected with pre-stressed intelligent tensioning instrument by oil pipe and signal line, the grouting component includes grout inlet pipe and grout outlet, and grout inlet pipe and grout outlet are respectively arranged at the both ends of bridge pre-stressed pipeline.The utility model is convenient for one-time installation of intelligent jack, and saves time and energy, while it is convenient for continuous movement operation, and improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tensioning and grouting technology for bridge construction, specifically to a tensioning and grouting device for bridge construction based on sensing technology. Background Technology

[0002] To achieve the grouting operation of the cables, the prior art discloses a grouting system for prestressed cables of bridges after tensioning. It includes a beam and a steel strand bundle passing through the beam. The steel strand bundle located on the outside of the beam is connected to a limiting plate. A smart jack is provided on one side of the limiting plate, and a tool anchor is provided on the other side of the smart jack. The smart jack is connected to a support structure. One side of the smart jack is connected to a smart CNC main pump station through an oil pipe and a data line, and the other side of the smart jack is connected to a smart CNC auxiliary pump station through an oil pipe and a data line.

[0003] A search revealed existing technology (publication number: CN220767735U), which describes "a bridge prestressed tensioning and grouting system, including two intelligent jacks used to seal prestressed duct openings, a crossbar erected on the bridge main body; two mounting rods connected to the crossbars, with the two mounting rods located on opposite sides of the width of the bridge main body; and two fixing units connected to the two mounting rods and connected to the intelligent jacks for fixing the intelligent jacks. This application has the advantages of using the crossbars to facilitate the fixing of the two mounting rods in conjunction with the bridge main body, using the mounting rods to facilitate the installation of the fixing units, and using the fixing units to facilitate the fixing of the intelligent jacks. The fixing method is not limited by the height of the bridge above the ground, and there is no need to change the fixing method of the intelligent jacks during the entire construction process, thus improving the construction progress of prestressed cable tensioning and grouting."

[0004] While existing bridge prestressed tensioning and grouting systems have achieved improved fixing methods for intelligent jacks and enhanced construction accuracy, they still have some shortcomings: Firstly, the crossbars involved in existing bridge prestressed tensioning and grouting systems require positional adjustments based on the width of the bridge beam during installation with the intelligent jacks. During this process, the intelligent jacks are suspended and require manual control for stability, resulting in time-consuming and labor-intensive operations. Secondly, after each beam tensioning, the crossbars need to be moved. Since both ends of the crossbars are connected to the jacks, movement is inconvenient. Disassembling and re-moving the jacks necessitates reinstallation, further complicating the process and reducing construction efficiency. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a bridge construction tensioning and grouting device based on sensing technology is provided to solve the problems mentioned in the background.

[0006] To achieve the above objectives, a bridge construction tensioning and grouting device based on sensor technology is provided, comprising: a lifting device and a grouting assembly. The lifting device includes a counterweight base, with a column connected to the upper end of the counterweight base and an mounting plate connected to the upper end of the column. A steel cable is connected to the lower side of the mounting plate, and a fixing device is connected to the lower end of the steel cable. The fixing device includes a horizontal plate and a vertical plate, with the horizontal plate connected to the upper end of the vertical plate. A smart jack is installed inside the vertical plate, and the smart jack is connected to a prestressed intelligent tensioning device via an oil pipe and a signal line. The grouting assembly includes a grout inlet pipe and a grout outlet, which are respectively located at both ends of the bridge prestressed duct.

[0007] Furthermore, a lifting motor is installed on the upper side of the mounting plate, and a drum is connected to the lower end of the lifting motor, with the upper end of the steel cable wound on the drum.

[0008] Furthermore, a fine-tuning motor is mounted on the upper side of the mounting plate, and a lead screw is connected to the front end of the fine-tuning motor, with a pulley frame connected to the outer side of the lead screw.

[0009] Furthermore, the pulley frame is slidably connected inside the mounting plate, and a fixed pulley is connected to the lower end of the pulley frame, with the steel cable passing over the fixed pulley.

[0010] Furthermore, a first limiting block is connected to the lower side of the horizontal plate, and a second limiting block is connected to the inner side of the vertical plate. A level is also installed on the outer wall of the horizontal plate.

[0011] Furthermore, the vertical plate has a fixing hole inside, as well as a wire hole and a pipe hole inside, and the oil pipe and signal line pass through the pipe hole and wire hole respectively to connect with the intelligent jack.

[0012] Furthermore, the grouting assembly also includes grout inlet nozzles and grout outlet nozzles at both ends of the prestressed duct, with the outer end of the grout inlet nozzle connected to the grout inlet pipe via a tee, and the lower end of the tee connected to a return grout pipe.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In use, firstly, the intelligent jack is installed inside the fixing device through the vertical plate and the fixing holes inside. Then, the lifting device is moved on the upper side of the bridge body to install the fixing device close to the prestressed pipe opening and the limiting plate. At this time, the height of the intelligent jack is adjusted by the lifting motor, drum, fixed pulley and steel cable. Then, the longitudinal position of the intelligent jack is adjusted by the fine adjustment motor, screw and pulley frame, so that the fixing device is fixedly connected to the limiting plate in a stable horizontal state, thus eliminating the need for manual control and adjustment, achieving the effect of saving time and effort.

[0015] 2. The use of a moving and fixing device enables the one-time installation of intelligent jacks. When continuously tensioning the prestressed ducts of the bridge, only the moving and fixing device needs to be moved to move the intelligent jacks synchronously, without the need to disassemble and reassemble the intelligent jacks again. By connecting each intelligent jack with the moving and fixing device, it can adapt to bridge bodies of different widths, which improves the flexibility and portability of use, thereby improving construction efficiency. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a side view of the fixing device according to an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the shifting device according to an embodiment of the present utility model.

[0019] Figure 4 This is an embodiment of the present utility model. Figure 1 Schematic diagram of the structure at point A in the middle.

[0020] Figure 5 This is a schematic diagram of the grouting assembly installation according to an embodiment of the present invention.

[0021] In the diagram: 1. Lifting device; 11. Counterweight base; 12. Column; 13. Mounting plate; 14. Lifting motor; 15. Drum; 16. Fine-tuning motor; 161. Lead screw; 17. Pulley frame; 18. Fixed pulley; 19. Steel cable; 2. Fixing device; 21. Horizontal plate; 22. Vertical plate; 221. Fixing hole; 23. First limit block; 24. Second limit block; 25. Intelligent jack; 26. Wire hole; 27. Pipe hole; 28. Level; 3. Prestressed intelligent tensioning device; 31. Oil pipe; 32. Signal line; 4. Grouting assembly; 41. Grout inlet pipe; 42. T-junction; 43. Grout inlet nozzle; 44. Return grout pipe; 45. Grout outlet nozzle. Detailed Implementation

[0022] Reference Figures 1 to 5As shown, this utility model provides a bridge construction tensioning and grouting device based on sensor technology, including: a lifting device 1 and a grouting assembly 4. The lifting device 1 includes a counterweight base 11, and a column 12 is connected to the upper end of the counterweight base 11. A mounting plate 13 is connected to the upper end of the column 12. A steel cable 19 is connected to the lower side of the mounting plate 13, and a fixing device 2 is connected to the lower end of the steel cable 19. The fixing device 2 includes a horizontal plate 21 and a vertical plate 22, and the horizontal plate 21 is connected to the upper end of the vertical plate 22. 2. An intelligent jack 25 is installed inside. The intelligent jack 25 is connected to the prestressed intelligent tensioning device 3 via an oil pipe 31 and a signal line 32. The grouting assembly 4 includes a grout inlet pipe 41 and a grout outlet nozzle 45, which are respectively located at both ends of the bridge prestressed pipe. The grouting assembly 4 also includes a grout inlet nozzle 43 and a grout outlet nozzle 45 located at both ends of the prestressed pipe. The outer end of the grout inlet nozzle 43 is connected to the grout inlet pipe 41 via a tee 42, and the lower end of the tee 42 is connected to a return grout pipe 44.

[0023] In this embodiment, the lifting device 1, the fixing device 2, the intelligent jack 25, the prestressed intelligent tensioning device 3, and the grouting assembly 4 constitute the main structure of the bridge construction tensioning and grouting device based on sensing technology involved in this application.

[0024] Among them, the intelligent jack 25 and the prestressed intelligent tensioning device 3 are known devices in the prior art. The prestressed intelligent tensioning device 3 is an ultra-high pressure power output device, whose main function is to provide reliable and stable lifting power for the tensioning device (jack) of the beam, and has functions such as lifting, pressure holding, and return. This device can accurately implement the commands set in the program and ensure reliable data communication through a wireless communication interface.

[0025] Specifically, the grouting component 4 is operated after the tensioning operation. The grouting component 4 involved in this application is only a partial component, which also includes the system host, the measurement and control system, and the circulating grouting system. The grout continuously circulates in a loop composed of prestressed pipes, a grouting machine, and a grouting pump to purge air from the pipes, promptly detect pipe blockages, and flush out impurities by increasing pressure, eliminating factors that cause incomplete grouting. Precision sensors are installed at the grout inlet and outlet of the pipes to monitor the pressure in real time and provide feedback to the system host for analysis and judgment. The measurement and control system adjusts the pressure according to the host's instructions to ensure that the prestressed pipes complete the grouting process under the constraints of important indicators such as grout quality, pressure, and pressure stabilization time required by the construction technical specifications, ensuring full and dense grouting.

[0026] Specifically, the pulper is connected to the inlet pipe 41 via a slurry pump, and the outlet pipe 45 is connected to the pulper via a pipeline. At the same time, the return pipe 44 is connected to the pulper, forming a loop.

[0027] like Figure 1 and Figure 3 In the mounting plate 13, a lifting motor 14 is installed on the upper side, and a drum 15 is connected to the lower end of the lifting motor 14. The upper end of the steel cable 19 is wound on the drum 15. A fine-tuning motor 16 is installed on the upper side of the mounting plate 13, and a lead screw 161 is connected to the front end of the fine-tuning motor 16. A pulley frame 17 is connected to the outside of the lead screw 161. The pulley frame 17 is slidably connected inside the mounting plate 13, and a fixed pulley 18 is connected to the lower end of the pulley frame 17. The steel cable 19 passes over the fixed pulley 18.

[0028] It should be noted that the counterweight base 11 is equipped with self-locking rollers at the bottom, which facilitates the movement of the device. The moving and lifting device 1 moves on the bridge body, so that after laying one end of the bridge beam, tensioning and grouting operations are performed immediately.

[0029] Specifically, the drum 15 is rotatably connected to the lower side of the mounting plate 13, the output shaft of the lifting motor 14 is connected to the spindle of the drum 15, and the steel cable 19 passes around the fixed pulley 18 and is connected to the drum 15.

[0030] Specifically, the mounting plate 13 has a guide groove inside, and the lead screw 161 is located on the upper side of the guide groove. A slider is provided on the upper side of the guide groove. The slider is screwed to the outside of the lead screw 161 and is slidably connected to the upper end face of the mounting plate 13. At the same time, the pulley bracket 17 is connected to the lower end of the slider.

[0031] Specifically, the lower end of the pulley frame 17 is provided with an N-shaped groove, and the fixed pulley 18 is installed in the groove. The movement of the pulley frame 17 is limited and guided by the guide groove.

[0032] like Figure 1 , Figure 2 and Figure 4 In the middle, a first limiting block 23 is connected to the lower side of the horizontal plate 21, and a second limiting block 24 is connected to the inner side of the vertical plate 22. At the same time, a level 28 is installed on the outer wall of the horizontal plate 21. A fixing hole 221 is opened inside the vertical plate 22. At the same time, a wire hole 26 and a pipe hole 27 are opened inside the vertical plate 22. The oil pipe 31 and the signal line 32 pass through the pipe hole 27 and the wire hole 26 respectively and are connected to the intelligent jack 25.

[0033] Specifically, the horizontal plate 21 and the vertical plate 22 are connected to form an inverted L-shaped structure, and the first limiting block 23 and the second limiting block 24 are connected to the horizontal plate 21 and the vertical plate 22 through threaded rods. After the intelligent jack 25 is installed, the stability of the fixing device 2 is further improved by placing the first limiting block 23 and the second limiting block 24 in the gap generated after the fixing device 2 is connected to the bridge body.

[0034] It should be noted that the connection between the intelligent jack 25 and the prestressed duct also includes a limiting plate, tool anchor, and tool clamp, and its installation method is consistent with existing technology.

[0035] In use, the intelligent jack is first installed inside the fixing device via the vertical plate and the internal fixing holes. Then, the lifting device is moved on the upper side of the bridge body to install the fixing device near the prestressed pipe opening and the limiting plate. At this time, the height of the intelligent jack is adjusted by the lifting motor, drum, fixed pulley and steel cable. Then, the longitudinal position of the intelligent jack is adjusted by the fine-tuning motor, lead screw and pulley frame, so that the fixing device is fixedly connected to the limiting plate in a stable horizontal state. This eliminates the need for manual control and adjustment, achieving the effect of saving time and effort.

[0036] The bridge tensioning and grouting device based on sensor technology of this invention can effectively solve the problems mentioned in the background technology. It realizes the one-time installation of intelligent jacks on the basis of existing bridge tensioning and grouting device technology based on sensor technology, which saves time and effort, and facilitates continuous mobile operation, thereby improving construction efficiency.

Claims

1. A tensioning and grouting device for bridge construction based on sensor technology, comprising: The moving and lifting device (1) and the grouting assembly (4) are characterized in that: the moving and lifting device (1) includes a counterweight base (11), and the upper end of the counterweight base (11) is connected to a column (12), and the upper end of the column (12) is connected to an installation plate (13), the lower side of the installation plate (13) is connected to a steel cable (19), and the lower end of the steel cable (19) is connected to a fixing device (2), the fixing device (2) includes a horizontal plate (21) and a vertical plate (22), and the horizontal plate (21) is connected to the upper end of the vertical plate (22), and a smart jack (25) is installed inside the vertical plate (22), while the outside of the smart jack (25) is connected to the prestressed smart tensioner (3) through an oil pipe (31) and a signal line (32), and the grouting assembly (4) includes a grout inlet pipe (41) and a grout outlet (45), and the grout inlet pipe (41) and the grout outlet (45) are respectively located at both ends of the bridge prestressed pipe.

2. The bridge construction tensioning and grouting device based on sensor technology according to claim 1, characterized in that, A lifting motor (14) is installed on the upper side of the mounting plate (13), and a drum (15) is connected to the lower end of the lifting motor (14), and the upper end of the steel cable (19) is wound on the drum (15).

3. The bridge construction tensioning and grouting device based on sensor technology according to claim 1, characterized in that, A fine-tuning motor (16) is installed on the upper side of the mounting plate (13), and a lead screw (161) is connected to the front end of the fine-tuning motor (16), and a pulley frame (17) is connected to the outside of the lead screw (161).

4. The bridge tensioning and grouting device based on sensor technology according to claim 3, characterized in that, The pulley frame (17) is slidably connected inside the mounting plate (13), and a fixed pulley (18) is connected to the lower end of the pulley frame (17), and the steel cable (19) passes over the fixed pulley (18).

5. A bridge construction tensioning and grouting device based on sensor technology according to claim 1, characterized in that, The lower side of the horizontal plate (21) is connected to a first limiting block (23), and the inner side of the vertical plate (22) is connected to a second limiting block (24). At the same time, a level (28) is installed on the outer wall of the horizontal plate (21).

6. The tensioning and grouting device for bridge construction based on sensing technology according to claim 1, characterized in that, The vertical plate (22) has a fixing hole (221) inside, and a wire hole (26) and a pipe hole (27) are also provided inside the vertical plate (22). The oil pipe (31) and the signal line (32) pass through the pipe hole (27) and the wire hole (26) respectively and are connected to the intelligent jack (25).

7. The tensioning and grouting device for bridge construction based on sensing technology according to claim 1, characterized in that, The grouting assembly (4) also includes a grout inlet (43) and a grout outlet (45) at both ends of the prestressed pipe. The outer end of the grout inlet (43) is connected to the grout inlet pipe (41) through a tee (42), and the lower end of the tee (42) is connected to a return grout pipe (44).

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