A kind of installation device of tensioning jack for facilitating hanging basket cantilever construction

Abstract

The utility model belongs to the field of bridge cantilever cast -in -situ beam construction, concretely is a kind of installation device of tension jack of easy hanging basket cantilever construction. Including load-bearing base frame system, load-bearing base frame system is fixed on hanging basket main truss by detachable connecting piece;Longitudinal translation mechanism, longitudinal translation mechanism is fixed in load-bearing base frame system bottom, its extension direction is parallel with the axis of cantilever cast -in -situ beam, and pulley device can be installed on longitudinal translation mechanism and slide along it;Vertical lifting system, vertical lifting system is installed on pulley device, moves along with pulley device, and vertical lifting system bottom is hung jack by hook;Intelligent positioning module;Intelligent positioning module includes laser emitter and pressure sensor, and the spatial coordinates of jack are monitored in real time. The present application solves the problems of inconvenient operation and equipment limitation in the installation of cantilever cast-in-place beam jack.

Description

Technical Field

[0001] This utility model belongs to the field of bridge cantilever cast-in-place beam construction, specifically a device for facilitating the installation of tension jacks in cantilever construction using hanging baskets. Background Technology

[0002] In the construction of cantilever cast-in-place beams using hanging baskets, the prestressing at the front end of each segment must be tensioned before proceeding to the next step. Tensioning the cantilever cast-in-place beam involves the installation and use of jacks, a crucial step in ensuring construction safety and precision. However, in actual construction, space constraints and complex installation locations, coupled with the compact structure of the hanging basket and limited jack installation space, especially at the front end, restrict operating space and affect equipment positioning and adjustment. Precise positioning of the jack support points is required, but the hanging basket may prevent direct vertical alignment, making jack installation difficult, especially in the high-altitude working environment at the cantilever end.

[0003] Conventional jack installation requires the use of mechanical equipment such as tower cranes and cranes to move and transfer jacks. However, due to factors such as bridges crossing rivers and roads and large spans, the installation equipment for jacks is often limited by environmental factors, making transportation difficult, operation challenging, and posing significant safety risks. Summary of the Invention

[0004] To address the problems of inconvenient operation and equipment limitations in the installation of jacks for cantilever cast-in-place beams, this utility model provides a device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets.

[0005] This utility model adopts the following technical solution: a device for facilitating the installation of tension jacks in cantilever construction using hanging baskets, comprising:

[0006] A load-bearing base frame system, which is fixed to the main truss of the hanging basket by detachable connectors;

[0007] A longitudinal translation mechanism is fixed to the bottom of the load-bearing base system, and its extension direction is parallel to the axis of the cantilever cast-in-place beam. A pulley device that can slide along the longitudinal translation mechanism is installed on the longitudinal translation mechanism.

[0008] A vertical lifting system is installed on a pulley device and moves with the pulley device. A jack is suspended from the bottom of the vertical lifting system by a hook.

[0009] Intelligent positioning module; the intelligent positioning module includes a laser emitter and a pressure sensor, which monitor the spatial coordinates of the jack in real time.

[0010] In some embodiments, the load-bearing frame system includes:

[0011] The front hanger is suspended at the front end of the top longitudinal beam of the main truss of the hanging basket main truss;

[0012] The rear hanger is suspended at the rear end of the main truss diagonal brace beam of the main truss of the hanging basket.

[0013] In some embodiments, the front hanger / rear hanger includes:

[0014] The upper crossbeam of the hanger is fixed to the top longitudinal beam / diagonal brace beam of the main truss;

[0015] Two uprights are provided for the hoisting support, and their upper ends are respectively fixed to both sides of the upper beam of the hoisting frame;

[0016] The lower crossbeam of the hanger is fixed to the lower end of the upright of the hoisting support and is used to install the longitudinal translation mechanism.

[0017] In some embodiments, the longitudinal translation mechanism includes:

[0018] The longitudinal beam is fixed to the bottom of the front and rear hangers, and the pulley system slides along the longitudinal beam.

[0019] In some embodiments, the vertical lifting system includes:

[0020] An electric hoist is fixed to the bottom of a pulley device, and the lower end of the electric hoist is connected to a jack via a wire rope.

[0021] In some embodiments, the intelligent positioning module further includes a laser receiver, a microprocessor, and a data transmission unit;

[0022] The laser transmitter establishes a laser positioning network with the reference positioning points on the main truss of the hanging basket, and the laser receiver is installed on the top of the jack to form a three-dimensional coordinate feedback system with the laser transmitter.

[0023] The microprocessor calculates the real-time three-dimensional coordinates of the jack by analyzing the laser phase difference;

[0024] The data transmission unit includes a wireless transmission module and a positioning data interface, enabling data interaction with the construction monitoring system.

[0025] The pressure sensor is equipped with a load threshold warning function. When the load value of the jack is detected to exceed the set range, an audible and visual alarm device is triggered.

[0026] The microprocessor establishes a closed-loop control system with the drive motor of the longitudinal translation mechanism and the control unit of the electric hoist, and automatically adjusts the longitudinal position of the pulley device and the suspension height of the jack according to the coordinate deviation value.

[0027] In some embodiments, the laser positioning network includes at least three laser emitters distributed at different locations on the main truss of the hanging basket, forming a spatial positioning field covering the construction area of ​​the cantilever cast-in-place beam.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] This invention achieves rapid installation and disassembly of the device through a detachable connection between the load-bearing base system and the main truss of the hanging basket, adapting to the construction needs of cantilever cast-in-place beams with different spans. The combined design of the longitudinal translation mechanism and the vertical lifting system allows the jacks to move precisely along the axis and adjust their height, reducing manual positioning errors.

[0030] This invention relates to a three-dimensional coordinate feedback system based on a laser positioning network, which, combined with a phase difference analysis algorithm, enables millimeter-level real-time monitoring of the spatial coordinates of a jack, significantly outperforming traditional manual verification methods.

[0031] This invention features a closed-loop linkage control system between the microprocessor, drive motor, and electric hoist, which can automatically correct jack position deviations within 30 seconds, preventing construction interruptions. The pressure sensor in this invention monitors the load value in real time; when the limit is exceeded, an audible and visual alarm device responds immediately and simultaneously pushes a warning message to the construction monitoring system, reducing structural risks caused by overload. Attached Figure Description

[0032] Figure 1 This is a front cross-sectional view of the tensioning jack device;

[0033] Figure 2 This is a cross-sectional view of the tensioning jack device.

[0034] Figure 3 This is a schematic diagram of the sliding device;

[0035] Figure 4 Schematic diagram of the longitudinal movement of tensioning jacks in cantilever construction with hanging baskets;

[0036] Figure 5 A schematic diagram of the vertical movement of tensioning jacks for cantilever construction with hanging baskets;

[0037] Figure 6 This is a schematic diagram of the intelligent positioning module. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but 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.

[0039] like Figure 1-5 As shown, a device for facilitating the installation of tensioning jacks in cantilever construction with hanging baskets includes:

[0040] A load-bearing base frame system, which is fixed to the main truss 2 of the hanging basket by detachable connectors;

[0041] A longitudinal translation mechanism is fixed to the bottom of the load-bearing base system, and its extension direction is parallel to the axis of the cantilever cast-in-place beam 1. A pulley device 5 that can slide along the longitudinal translation mechanism is installed on the longitudinal translation mechanism.

[0042] A vertical lifting system is installed on a pulley device 5 and moves with the pulley device 5. A jack 7 is suspended at the bottom of the vertical lifting system by a hook.

[0043] The intelligent positioning module includes a laser emitter 1301 and a pressure sensor 1305, which monitor the spatial coordinates of the jack 7 in real time.

[0044] Specifically, the load-bearing frame system includes:

[0045] The front hanger is suspended at the front end of the top longitudinal beam 8 of the main truss of the main truss of the hanging basket 2;

[0046] The rear hanger is suspended at the rear end of the main truss diagonal brace beam 11 of the main truss of the hanging basket 2.

[0047] Specifically, the front / rear hanger includes:

[0048] The upper crossbeam 9 of the hanger is fixed to the top longitudinal beam 8 of the main truss / the diagonal brace beam 11 of the main truss.

[0049] Two lifting support columns 4 are provided, and their upper ends are respectively fixed to both sides of the upper beam 9 of the lifting frame;

[0050] The lower crossbeam 10 of the hanger is fixed to the lower end of the upright of the hoisting support 4 and is used to install the longitudinal translation mechanism.

[0051] Installation of load-bearing frame system:

[0052] Front hanger installation:

[0053] The main truss top longitudinal beam connectors are made of QT420 high-strength ductile iron (tensile strength ≥420MPa).

[0054] The upper crossbeam 9 of the hanger is made of H-beam steel HN400×200×8×13, and is connected to the top longitudinal beam 8 of the main truss by M24 high-strength bolts. The bolt preload is applied to 350kN·m.

[0055] The hoisting support upright 4 adopts a double-limb lattice steel pipe column (Φ168×10mm, Q355B), with an upright spacing of 2.4m. The lower end is welded with a shear key to connect with the lower crossbeam 10 of the hoisting support.

[0056] Rear hanger installation:

[0057] A 20mm thick reinforcing steel plate (Q345qd) is added at the connection of the main truss diagonal brace beam 11, and a K-shaped groove weld is used (weld leg size 12mm).

[0058] The lower crossbeam 10 of the hanger is equipped with a longitudinal groove (tolerance H7 / g6), and is adjustablely connected to the longitudinal beam 3 by T-bolts (adjustment range ±150mm).

[0059] Specifically, the longitudinal translation mechanism includes a longitudinal beam 3, which is fixed to the bottom of the front and rear hangers, and a pulley device 5 that slides along the longitudinal beam 3.

[0060] Specifically, the vertical lifting system includes an electric hoist 12, which is fixed to the bottom of the pulley device 5, and the lower end of the electric hoist 12 is connected to a jack 7 via a wire rope 6.

[0061] Specifically, such as Figure 6 As shown, the intelligent positioning module 13 also includes a laser receiver 1302, a microprocessor 1303, and a data transmission unit 1304;

[0062] The laser transmitter 1301 establishes a laser positioning network with the reference positioning points on the main truss 2 of the hanging basket, and the laser receiver 1302 is installed on the top of the jack 7 to form a three-dimensional coordinate feedback system with the laser transmitter 1301.

[0063] The microprocessor 1303 calculates the real-time three-dimensional coordinates of the jack 7 by analyzing the laser phase difference;

[0064] The data transmission unit 1304 includes a wireless transmission module and a positioning data interface, enabling data interaction with the construction monitoring system.

[0065] The pressure sensor 1305 is equipped with a load threshold warning function. When the load value of the jack 7 is detected to exceed the set range, the audible and visual alarm device 1306 is triggered.

[0066] The microprocessor 1303 establishes a closed-loop control system with the drive motor of the longitudinal translation mechanism and the control unit of the electric hoist 12, and automatically adjusts the longitudinal position of the pulley device 5 and the suspension height of the jack 7 according to the coordinate deviation value.

[0067] The laser positioning network includes at least three laser emitters 1301 distributed at different locations on the main truss 2 of the hanging basket, forming a spatial positioning field covering the construction area of ​​the cantilever cast-in-place beam 1.

[0068] 1. Deployment of laser positioning network:

[0069] Select at least three non-collinear reference points on the main truss of the hanging basket (such as the two ends of the top longitudinal beam of the main truss and the midpoint of the diagonal brace beam), and install high-precision laser emitters (wavelength 635nm, divergence angle ≤0.1mrad) to form a spatial positioning field covering the construction area. Determine the absolute coordinates of each emitter (error ≤1mm) through a calibration procedure.

[0070] 2. Construction of a 3D coordinate feedback system:

[0071] A laser receiver (with a built-in CCD array and a resolution of 0.01°) is installed on the top of the jack to receive multiple laser signals in real time. The microprocessor (ARM Cortex-M7 core) calculates the phase difference and timestamp, fuses the data using the least squares method, and outputs the real-time three-dimensional coordinates of the jack (update frequency ≥10Hz).

[0072] 3. Data transmission and interaction:

[0073] The wireless transmission module (LoRa+Wi-Fi dual-mode) uploads coordinate data and load information to the monitoring terminal, while simultaneously receiving target coordinate commands. The positioning data interface (compatible with Modbus protocol) supports direct connection to the PLC control system, ensuring real-time closed-loop control (delay <50ms).

[0074] 4. Implementation of closed-loop control logic:

[0075] The microprocessor has a built-in PID algorithm. When it detects a deviation between the actual coordinates and the design value (such as longitudinal deviation Δx > 5mm or elevation deviation Δz > 3mm), it generates a control signal: longitudinal translation: drives a stepper motor (microstepping accuracy 1.8° / 200 steps) to adjust the position of the pulley device, with a stroke accuracy of ±0.5mm;

[0076] Height adjustment: Control the electric hoist (frequency conversion speed regulation, lifting speed 0.1-1m / min) to correct the suspension height, with a repeatability accuracy of ±1mm.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for installing a tensioning jack for a hanging basket cantilever construction, characterized in that include: The load-bearing base frame system is fixed to the main truss (2) of the hanging basket by detachable connectors; The longitudinal translation mechanism is fixed to the bottom of the load-bearing base system and its extension direction is parallel to the axis of the cantilever cast-in-place beam (1). A pulley device (5) that can slide along the longitudinal translation mechanism is installed on the longitudinal translation mechanism. A vertical lifting system is installed on a pulley device (5) and moves with the pulley device (5). A jack (7) is suspended at the bottom of the vertical lifting system by a hook. The intelligent positioning module includes a laser transmitter (1301) and a pressure sensor (1305) to monitor the spatial coordinates of the jack (7) in real time.

2. The device for installing the tensioning jack for the cantilever construction of the hanging basket according to claim 1, characterized in that, The load-bearing frame system includes: The front hanger is suspended at the front end of the top longitudinal beam (8) of the main truss of the main truss (2); The rear hanger is suspended at the rear end of the main truss diagonal brace beam (11) of the main truss of the hanging basket (2).

3. The device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets, as described in claim 2, is characterized in that... The front / rear hanger includes: The upper crossbeam (9) of the hanger is fixed on the top longitudinal beam (8) of the main truss / the diagonal brace beam (11) of the main truss; Two lifting support poles (4) are provided, and their upper ends are respectively fixed to both sides of the upper beam (9) of the lifting frame; The lower crossbeam (10) of the hanger is fixed to the lower end of the upright (4) of the hoisting support and is used to install the longitudinal translation mechanism.

4. The device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets, as described in claim 2 or 3, is characterized in that... The longitudinal translation mechanism includes: The longitudinal beam (3) is fixed to the bottom of the front hanger and the rear hanger, and the pulley device (5) slides along the longitudinal beam (3).

5. The device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets, as described in claim 4, is characterized in that... The vertical lifting system includes: An electric hoist (12) is fixed at the bottom of a pulley device (5), and the lower end of the electric hoist (12) is connected to a jack (7) via a wire rope (6).

6. The device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets, as described in claim 1, is characterized in that... The intelligent positioning module also includes a laser receiver (1302), a microprocessor (1303), and a data transmission unit (1304). The laser transmitter (1301) establishes a laser positioning network with the reference positioning point on the main truss (2) of the hanging basket, and the laser receiver (1302) is installed on the top of the jack (7) to form a three-dimensional coordinate feedback system with the laser transmitter (1301); The microprocessor (1303) calculates the real-time three-dimensional coordinates of the jack (7) by analyzing the laser phase difference; The data transmission unit (1304) includes a wireless transmission module and a positioning data interface, which enables data interaction with the construction monitoring system; The pressure sensor (1305) is equipped with a load threshold warning function. When the load value of the jack (7) is detected to exceed the set range, the sound and light alarm device (1306) is triggered.

7. The device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets, as described in claim 6, is characterized in that... The microprocessor (1303) establishes a closed-loop control system with the drive motor of the longitudinal translation mechanism and the control unit of the electric hoist (12), and automatically adjusts the longitudinal position of the pulley device (5) and the suspension height of the jack (7) according to the coordinate deviation value.

8. The device for facilitating the installation of tensioning jacks in cantilever construction using hanging baskets, as described in claim 6, is characterized in that... The laser positioning network includes at least three laser emitters (1301) distributed at different locations on the main truss (2) of the hanging basket, forming a spatial positioning field covering the construction area of ​​the cantilever cast-in-place beam (1).

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