Temporary support with safety channel and operation platform and installation method

Abstract

The invention discloses a temporary support with a safety channel and an operation platform and an installation method, and relates to the technical field of bridge construction auxiliary facilities, the temporary support comprises a universal support, two sets of lug plates are evenly arranged in the vertical direction of a stand column, and the lug plates are connected with a folding platform through a double-locking structure; the folding platform comprises an operation platform, anti-falling guardrails connected through rotating shafts on the two sides and a mounting plate arranged at the end of the operation platform, and the mounting plate is provided with an anti-skid grating and a bottom anti-falling net assembly. According to the design, self-adaptive dynamic leveling of the curved surface is achieved through a hydraulic telescopic rod and a laser receiver, a double-locking structure provides double safety guarantees of mechanical hard locking and active protection of a buffer net, multi-platform rapid bolt-free combination is achieved through a mounting plate clamping groove structure, and the mounting method is based on pre-assembly of a BIM coordinate formula; and in combination with laser guide hoisting, hydraulic precise fitting and anti-falling system joint debugging, the safety and efficiency of construction of high-curvature structures such as the arch bridge are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary facilities for bridge construction, and more particularly to a temporary support with a safety passage and an operating platform and an installation method thereof. Background Art

[0002] During the construction of large steel structure bridges, such as arch bridges and cable-stayed bridges, temporary supports and supporting safety passages and operating platforms must be set up around the main structure to ensure the safety of workers working at height and construction efficiency. However, existing traditional technologies have the following defects: traditional brackets are fixed with bolts or welded on-site, which are easy to loosen under wind loads or equipment vibrations; only simple railings are set on the edge of the operating platform, and there is a lack of active anti-fall mechanism; at the same time, each section of the bracket needs to be separately hoisted with ladders, platforms and other components, and then assembled on-site. The changes in the arch rib surface lead to uneven gaps between the platform and the structure, and the position needs to be repeatedly adjusted manually; and platform overload relies on manual inspections, and accident warnings are delayed.

[0003] Therefore, in order to solve the above problems, a temporary support with a safety passage and an operating platform and an installation method are proposed. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a temporary bracket with a safety passage and an operating platform and an installation method to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a temporary bracket with a safety passage and an operating platform, comprising a universal support, characterized in that: a hydraulic telescopic rod is provided on the top of the universal support, the top of the hydraulic telescopic rod is connected to a connecting seat, a column is provided on one side of the connecting seat, an ear plate is provided on one side of the column, two groups of ear plates are provided, and the two groups of ear plates are evenly arranged along the vertical direction of the column, a double locking structure is provided on one side of the ear plate, a folding platform is provided on one side of the double locking structure, the folding platform includes an operating platform, a rotating shaft and an anti-fall guardrail, rotating shafts are provided on both sides of the operating platform, one side of the rotating shaft is connected to the anti-fall guardrail, the anti-fall guardrail is connected to the column through the double locking structure, a mounting plate is provided on the side of the operating platform away from the rotating shaft, an anti-slip grille is provided on one side of the mounting plate, and an anti-fall net assembly is provided on the bottom of the mounting plate.

[0006] Preferably, a base bottom plate is provided at the bottom of the universal support, a substrate scale plate is provided on the outer wall of the universal support, a 0-360° graduation is engraved on the outer wall of the substrate scale plate, and a laser receiver is provided at the connection between the universal support and the hydraulic telescopic rod, and the receiving surface of the laser receiver has an inclination angle of 45°.

[0007] Preferably, a combination plate is provided at the top of the column, and the column can be increased in number of layers through the combination plate. Through holes are provided on the outer wall of the combination plate, and the through holes are provided in several groups, and each group of through holes is evenly arranged along the horizontal direction of the combination plate.

[0008] Preferably, the double locking structure includes a pin hole, a stress locking steel cable, a manual knob and a spring locking pin, the inside of the ear plate is provided with a pin hole, one side of the pin hole is provided with a stress locking steel cable, one side of the stress locking steel cable is provided with a manual knob, one side of the pin hole is provided with a spring locking pin, and the spring locking pin is connected to the anti-fall guardrail.

[0009] Preferably, card slots are provided on both sides of the mounting plate, and the card slots have the same cross-section as the operating platform, so that two groups of operating platforms can be combined through the mounting plate, and a connecting groove is provided above the card slots, and connecting blocks are provided on both sides of the anti-slip grille, and the anti-slip grille is connected to the connecting groove through the connecting blocks.

[0010] Preferably, the anti-fall net assembly includes a catapult, a transmission rod, a folding rod, a buffer net and a net fixing frame. Catapults are provided on both sides of the bottom of the mounting plate, a transmission rod is provided on one side of the catapult, a folding rod is provided on one side of the transmission rod, a buffer net is provided on one side of the folding rod, a net fixing frame is provided on one side of the buffer net, and the net fixing frame is connected to the operating platform. A pressure sensor is provided on the outer wall of the anti-fall guardrail, and the catapult drives the folding rod to drive the buffer net to open through the changes in the pressure sensor.

[0011] Preferably, a ladder plate is provided on one side of the operating platform, a ladder is provided on the top of the ladder plate, and the rung spacing of the ladder is 300 mm.

[0012] A temporary support installation method with a safety passage and an operating platform includes the following steps: S1 3D pre-assembly: import the BIM model of the steel tower to generate the space coordinates of the bracket unit, then open the anti-fall guardrail of the folding platform on site through the rotating shaft, so that the spring locking pin is combined with the anti-fall guardrail; S2 laser-guided hoisting: a laser reflective target is set on the top of the column, and the column and the folding platform are hoisted through the arch rib construction control network; S3 double locking activation: after the folding platform falls into place, the spring locking pin springs into the pin hole, and the stress locking cable is tightened by the manual knob; S4 hydraulic surface fitting: the universal support receives the laser point on the bottom surface of the arch rib through the laser receiver to calculate the height difference, and dynamically adjusts it through the universal support and the hydraulic telescopic rod; S5 Anti-fall system joint debugging: The folding platform is combined with the mounting plate to form an overall temporary bracket. After the connection is completed, the counterweight ball hits the anti-fall guardrail to verify the triggering threshold and ejection time of the anti-fall net component.

[0013] Preferably, in step S1, the formula for generating the spatial coordinates of the bracket unit is as follows: ; in, Represents the coordinates of the center point of the i-th bracket unit; Indicates the coordinates of the center point of the cross section; Indicates the projected length of the operating platform; represents the tangent vector of the arch rib centerline; R represents the arch rib curvature radius; represents the normal vector of the arch rib section; represents the binormal vector of the arch rib section; It represents the unit installation phase angle, and the corresponding data is input through the formula to generate the spatial coordinates of the bracket unit.

[0014] Preferably, in step S4, the height difference is calculated as follows: ; in, Indicates the actual height difference; Indicates the laser ranging value; Indicates the inclination angle of the arch rib surface; Indicates the laser emission elevation angle; Indicates the design calibration height; Indicates the amount of foundation settlement; Indicates the temperature compensation coefficient; Represents the temperature difference, which can be obtained by the calculation formula: >10mm, the hydraulic telescopic rod will be lifted; <-10mm, the hydraulic telescopic rod contracts.

[0015] Technical effects and advantages of the present invention: 1. Compared with the existing technology, this temporary bracket with a safety channel and an operating platform and its installation method use the universal support base plate dial and a 45° laser receiver to calculate the arch rib inclination in real time. The hydraulic telescopic rod automatically compensates for the height difference, eliminating manual leveling errors and achieving millimeter-level fitting of the curved surface.

[0016] 2. Compared with the existing technology, this temporary bracket with a safety passage and an operating platform and its installation method uses a spring locking pin to automatically spring into the pin hole when the platform falls, and cooperates with the manual knob to tighten the stress locking steel cable to form a mechanical hard lock. At the same time, the pressure sensor detects the impact force of the guardrail, and the linked catapult deploys the buffer net within 0.5 seconds to provide redundant protection for fall cushioning.

[0017] 3. Compared with the existing technology, the temporary bracket with a safety passage and an operating platform and the installation method reduce the amount of high-altitude bolt operations by stacking layers of through-holes in the combined plates and plugging the operating platform into the mounting plates using slots.

[0018] 4. Compared with the existing technology, this temporary bracket with a safety passage and an operating platform and its installation method provide a physical locking basis through a spring locking pin, and a pressure sensor activates the catapult to form secondary protection, solving the passive response defects of traditional protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall side structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention when viewed from above.

[0022] Figure 4 It is a partial side perspective schematic diagram of the entire present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the folding platform of the present invention.

[0024] Figure 6 This is a three-dimensional exploded view of the anti-fall net assembly of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the column of the present invention.

[0026] Figure 8 It is a schematic diagram of the partial three-dimensional structure of the universal support of the present invention.

[0027] The accompanying drawings are marked as follows: 1. universal support; 11. base bottom plate; 12. base plate dial; 13. laser receiver; 2. hydraulic telescopic rod; 3. connecting seat; 4. column; 41. combination plate; 42. through hole; 5. ear plate; 6. double locking structure; 61. pin hole; 62. stress locking steel cable; 63. manual knob; 64. spring locking pin; 7. folding platform; 71. operating platform; 72. rotating shaft; 73. anti-fall guardrail; 74. ladder plate; 75. ladder; 76. pressure sensor; 8. mounting plate; 81. anti-slip grille; 82. slot; 83. connecting slot; 84. connecting block; 9. anti-fall net assembly; 91. catapult; 92. transmission rod; 93. folding rod; 94. buffer net; 95. net body fixing frame. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1 As attached Figures 1 to 8 The temporary support with a safety passage and an operating platform shown in the figure includes a universal support 1, a hydraulic telescopic rod 2 is provided on the top of the universal support 1, and the top of the hydraulic telescopic rod 2 is connected to a connecting seat 3, a column 4 is provided on one side of the connecting seat 3, and an ear plate 5 is provided on one side of the column 4. There are two groups of ear plates 5, and the two groups of ear plates 5 are evenly arranged along the vertical direction of the column 4, a double locking structure 6 is provided on one side of the ear plate 5, and a folding platform 7 is provided on one side of the double locking structure 6. The folding platform 7 includes an operating platform 71, a rotating shaft 72 and an anti-fall guardrail 73. The operating platform 71 is provided with a rotating shaft 72 on both sides, and an anti-fall guardrail 73 is connected to one side of the rotating shaft 72. The anti-fall guardrail 73 is connected to the column 4 through the double locking structure 6, and a mounting plate 8 is provided on the side of the operating platform 71 away from the rotating shaft 72, and an anti-slip grille 81 is provided on one side of the mounting plate 8. The bottom of the mounting plate 8 is provided with an anti-fall net assembly 9.

[0030] Specifically, the temporary support utilizes a universal support 1 as its foundational support. Its base plate 11 is secured to the construction surface via anchor bolts. A HYD-200 multi-stage hydraulic cylinder is mounted on top, along with a hydraulic telescopic rod 2 with a stroke range of 200 to 1500 mm. The piston rod end of the hydraulic telescopic rod 2 is connected to a connecting base 3 via high-strength bolts. The connecting base 3 is welded from Q345B steel plates into a box-shaped structure. Its sidewalls are welded to columns 4 with a 150 mm x 150 mm H-shaped steel cross-section. Two sets of lugs 5 are symmetrically welded to the columns 4 at 1.2 meter intervals. The lugs 5 have Φ30 mm holes for connecting to a double locking mechanism 6. The main operating platform 71 of the folding platform 7 is constructed from a 6061-T6 aluminum alloy grating. Anti-fall guardrails 73 are hinged to the sides via pivots 72. This 1.2 meter high mesh structure rests against the side of the platform when retracted. When deployed, spring locking pins 64 inserted into the pin holes 61 of the lugs 5 achieve initial positioning. The front end of the operating platform 71 is welded with a mounting plate 8, which is interlocked with the adjacent platform section through a slot 82. The upper surface of the mounting plate 8 is embedded with an anti-slip grille 81, and the bottom is connected to the net body fixing frame 95 of the anti-fall net assembly 9 through a hinge. This design enables the platform to dynamically adapt to the curved surface after unfolding, and is leveled in real time through the hydraulic telescopic rod 2. The anti-fall net assembly 9 automatically pops open the buffer net 94 within 0.5 seconds when falling, forming a "mechanical locking + dynamic protection" dual safety mechanism.

[0031] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 8 As shown, see the following description for details: As a preferred embodiment, the base bottom plate 11 of the universal support 1 is made of 20mm thick Q235B steel plate with a size of 500mm×500mm, and is fixed to the construction foundation surface by 4 sets of M24 chemical anchor bolts to ensure overall anti-overturning stability; The baseplate scale plate 12 mounted on its outer wall is a stainless steel ring scale formed through an etching process. Construction workers can quickly adjust the horizontal rotation angle of the support by observing the position of the pointer on the scale plate 12 to align it with the curvature of the arch rib. A laser receiver 13, an RS-485 laser positioning sensor, is integrated at the flange connection between the hydraulic telescopic rod 2 and the universal support 1. Its receiving surface is tilted at a 45° angle toward the bottom of the arch rib. This angle design enables the receiving surface to simultaneously capture horizontal and vertical laser projection points from the laser emitting device of the construction control network. Using the principle of triangulation, it calculates the relative height difference between the arch rib curved surface and the support in real time, thereby driving the hydraulic telescopic rod 2 to respond to the threshold of ±10mm for telescopic compensation.

[0032] As a preferred embodiment, the combined plate 41 welded to the top of the column 4 is made of 20mm thick Q345B steel plate, with a square mortise and tenon groove in the center that matches the cross-section of the column 4. The vertical socket positioning of the upper and lower columns is achieved through the mortise and tenon structure. Three groups of Φ22mm through holes 42 are opened on each of the four outer walls of the combined plate 41. The hole groups are arranged at equal intervals of 200mm in the horizontal direction, and the center lines of adjacent hole groups are orthogonally distributed at 90°. During construction, the ear plates 5 of the upper columns 4 are connected and fixed to the through holes 42 of the lower combined plate 41 by 8.8-grade M20 high-strength bolts. The horizontal and uniform arrangement of the through holes 42 allows the ear plates 5 to be flexibly installed in four directions: 0°, 90°, 180°, and 270°. The dense distribution of the through holes 42 allows the ear plates 5 to be adjusted in height in the vertical direction with a module of 400mm.

[0033] As a preferred embodiment, the pin hole 61 of the double locking structure 6 is machined inside the ear plate 5 with a tolerance accuracy of Φ28H7, and its axis is coaxially aligned with the mounting hole at the end of the anti-fall guardrail 73; the spring locking pin 64 is made of 65Mn spring steel, and its tail is hinged to the side wall of the anti-fall guardrail 73 through a pre-compressed disc spring group. When the folding platform 7 falls to a height of 50 mm from the ear plate 5, the spring locking pin 64 automatically bounces into the pin hole 61 under the action of the disc spring, completing the first stage of mechanical positioning.

[0034] One end of the stress-locking cable 62 is fixed to the side base of the lug 5, and the other end is wound around the worm gear drum of the manual knob 63. When the construction worker rotates the manual knob 63 90 degrees clockwise, the worm gear mechanism increases the cable preload to 12kN, forming a rigid connection between the anti-fall guardrail 73 and the column 4. This two-stage locking mechanism allows the spring locking pin 64 to quickly capture and eliminate installation gaps.

[0035] As a preferred embodiment, the mounting plate 8 is integrally cut and formed from a 16mm thick Q345B steel plate, and a trapezoidal slot 82 with a depth of 20mm is machined on its two side edges, with a slot inclination angle of 15°, forming an interference fit with the 6061-T6 aluminum alloy cross-section of the operating platform 71. When the two sets of operating platforms 71 are brought close together by hoisting, the trapezoidal slope of the slot 82 guides the platform end to automatically slide in and lock, forming a bolt-free mechanical interlock; a connecting groove 83 with a width of 12mm is milled 10mm just above the slot 82, and the 304 stainless steel connecting block 84 of the anti-slip grille 81 is welded to both sides of the bottom of the grille with a T-shaped structure. During installation, the connecting block 84 is embedded in the connecting groove 83 from top to bottom and then rotated horizontally 90°, and the barb structure of the T-shaped head is used to achieve anti-slip fixation.

[0036] As a preferred embodiment, the anti-fall net assembly 9 includes a catapult 91, a transmission rod 92, a folding rod 93, a buffer net 94 and a net fixing frame 95. Catapults 91 are provided on both sides of the bottom of the mounting plate 8, a transmission rod 92 is provided on one side of the catapult 91, a folding rod 93 is provided on one side of the transmission rod 92, a buffer net 94 is provided on one side of the folding rod 93, and a net fixing frame 95 is provided on one side of the buffer net 94. The net fixing frame 95 is connected to the operating platform 71, and a pressure sensor 76 is provided on the outer wall of the anti-fall guardrail 73. The catapult 91 drives the folding rod 93 to drive the buffer net 94 to open through the changes in the pressure sensor 76.

[0037] Specifically, the catapult 91 of the anti-fall net assembly 9 uses an HS-45 spring energy storage catapult device, which is symmetrically installed on the welded bases on both sides of the bottom of the mounting plate 8; the transmission rod 92 is a 7075-T6 aluminum alloy connecting rod, one end of which is hinged to the piston output end of the catapult 91 through a pin, and the other end is connected to the hinge node of the folding rod 93; the folding rod 93 uses four groups of X-shaped hinged Q235B steel pipes, which form a 4m×3m rectangular frame when unfolded; the buffer net 94 is woven from high-strength nylon rope, and the edge is wrapped in the slide groove of the folding rod 93; the net body fixing frame 95 is fixed to the bottom beam of the operating platform 71 by 8.8-level M12 bolts.

[0038] When a person hits the anti-fall guardrail 73, the pressure sensor 76 of the outer wall model PT124B-201 detects an impact force of ≥300N and outputs an electrical signal, triggering the catapult 91 to release the torsion spring potential energy, pushing the transmission rod 92 to make the folding rod 93 unfold to the maximum angle within 0.5 seconds. At the same time, the buffer net 94 is tensioned to form a 15° inclined net, and the net fixing frame 95 provides boundary restraint force.

[0039] As a preferred embodiment, the climbing ladder 74 adopts 8mm thick Q235B steel plate, the long side of which is fixed to the side beam of the operating platform 71 by full welding, and the short side is bent upward to form a mounting base with a 30° inclination angle; the main body of the ladder 75 is composed of two 40mm×40mm square steel pipes as side rails, with Φ20mm round steel welded in between as ladder steps, and the center spacing of the ladder steps is strictly controlled at 300mm±2mm; the top of the side rail is connected to the bent edge of the climbing ladder plate 74 through an M16 hinge shaft, and an adjustable support foot is set at the bottom to adapt to the slope of the ground. The surface of the ladder step is hot-dip galvanized and then pressed with convex dots to enhance the anti-slip property.

[0040] A temporary support installation method with a safety passage and an operating platform includes the following steps: S1 3D pre-assembly: import the BIM model of the steel tower to generate the support unit space coordinates, then open the anti-fall guardrail 73 of the folding platform 7 on site through the rotating shaft 72, so that the spring locking pin 64 is combined with the anti-fall guardrail 73; S2 Laser-guided hoisting: A laser reflective target is set on the top of the column 4, and the column 4 and the folding platform 7 are hoisted through the arch rib construction control network; S3 Double locking activation: After the folding platform 7 falls into place, the spring locking pin 64 springs into the pin hole 61, and the stress locking cable 62 is tightened by the manual knob 63; S4 hydraulic surface fitting: the universal support 1 receives the laser point on the bottom surface of the arch rib through the laser receiver 13 to calculate the height difference, and dynamically adjusts it through the universal support 1 and the hydraulic telescopic rod 2; S5 Anti-fall system joint debugging: The folding platform 7 is combined with the mounting plate 8 to form an overall temporary bracket. After the connection is completed, the counterweight ball hits the anti-fall guardrail 73 to verify the triggering threshold and ejection time of the anti-fall net component 9.

[0041] Specifically, the steel tower BIM model was imported using Autodesk Revit software to calculate the spatial position of the support units. Parameters such as the arch rib curvature radius R and tangent vector T were directly extracted from the model. On-site, the anti-fall guardrail 73 of the folding platform 7 was unfolded 90° around the rotation axis 72, placing the spring locking pin 64 in a ready-to-trigger state. S2 Laser-Guided Hoisting: A RET-300 laser reflective target was installed atop column 4. Relying on the on-site arch rib construction control network, the tower crane was directed to hoist the target-equipped column 4 and the unfolded folding platform 7 to the preset coordinates, achieving a positioning accuracy of ±5mm.

[0042] S3 double locking activation: When the platform falls to a distance of 50 mm from the ear plate 5, the spring locking pin 64 automatically springs into the pin hole 61 under the action of the disc spring to complete the initial positioning; the construction worker rotates the manual knob 6390° to tighten the stress locking cable 62, forming a mechanical hard lock.

[0043] S4 Hydraulic Surface Fitting: The 45° laser receiver 13 of the universal support 1 captures the laser point on the bottom surface of the arch rib and calculates the height difference. When |ΔH|>10mm, the hydraulic telescopic rod 2 automatically compensates for the displacement to achieve millimeter-level fitting of the surface.

[0044] S5 Anti-fall system joint debugging: After assembling multiple platforms through the slots 82 of the mounting plate 8, a 75kg counterweight ball is used to impact the anti-fall guardrail 73 at a speed of 2m / s. This verifies that the pressure sensor 76 triggers the catapult 91 to deploy the buffer net 94 in milliseconds, ensuring reliable double protection.

[0045] As a preferred embodiment, in step S1, the formula for generating the spatial coordinates of the bracket unit is as follows: ; in, Represents the coordinates of the center point of the i-th bracket unit; Indicates the coordinates of the center point of the cross section; Indicates the projected length of the operating platform; represents the tangent vector of the arch rib centerline; R represents the arch rib curvature radius; represents the normal vector of the arch rib section; represents the binormal vector of the arch rib section; Indicates the unit installation phase angle, and the corresponding data is input through the formula to generate the bracket unit space coordinates.

[0046] Specifically, the spatial coordinate generation of the bracket unit is implemented based on the three-dimensional curve parameterization principle: first, the center point coordinate P_c of the arch rib section and the center line tangent vector T at this point are extracted from the steel tower BIM model (such as Autodesk Revit), and the projection length of the operating platform is combined with the coordinate of the center point P_c of the arch rib section and the center line tangent vector T at this point. Determine the foundation positioning point; then, according to the arch rib curvature radius R (automatically calculated by the BIM model), the cross-section normal vector N and the binormal vector B (generated by the vector cross product N×T), the unit installation phase angle Enter the formula and solve it in steps of 15°. It is defined as the installation azimuth angle of the bracket unit relative to the cross section of the arch rib. The bracket position is dynamically adjusted along the circumferential direction of the arch rib curvature.

[0047] As a preferred embodiment, in step S4, the height difference is calculated as follows: ; in, Indicates the actual height difference; Indicates the laser ranging value; Indicates the inclination angle of the arch rib surface; Indicates the laser emission elevation angle; Indicates the design calibration height; Indicates the amount of foundation settlement; Indicates the temperature compensation coefficient; Represents the temperature difference, which can be obtained by the calculation formula: >10mm, the hydraulic telescopic rod 2 will be lifted; <-10mm, the hydraulic telescopic rod 2 will shrink.

[0048] Specifically, the laser distance value D_m (accuracy ±2mm) of the bottom surface of the arch rib is first obtained through the 45° laser receiver 13, and the inclination angle β of the arch rib surface at the measuring point is extracted from the BIM model; the laser emitting device presets the elevation angle α=30°, and the design calibration height is Taken from the construction drawings, the foundation settlement The displacement sensor built into the base plate 11 is used for real-time monitoring; the temperature compensation coefficient K is the linear expansion coefficient of steel 1.2×10 -5 / ℃, temperature difference The temperature is collected by a temperature sensor attached to the surface of the arch rib. The above parameters are input into the PLC controller to automatically calculate the ΔH value. When ΔH>10mm, the output signal drives the hydraulic telescopic rod 2 of weight 1 to lift compensation, and when ΔH<-10mm, it shrinks to compensate.

[0049] The working process of the present invention is as follows: the universal support 1 is fixed to the foundation surface through the base bottom plate 11, and the hydraulic telescopic rod 2 on its top dynamically adjusts the height according to the laser point on the bottom surface of the arch rib captured by the laser receiver 13 and the height difference calculation formula; The connecting seat 3 is laterally connected to the column 4. The matrix of through holes 42 of the combined plate 41 at the top of the column 4 realizes the expansion of the floor height. The ear plate 5 of the side wall of the column 4 automatically springs into the anti-fall guardrail 73 through the spring locking pin 64 of the double locking structure 6, thereby completing the initial positioning with the pin hole 61, and then tightening the stress locking cable 62 through the manual knob 63 to form a rigid lock; The rotating shafts 72 on both sides of the operating platform 71 of the folding platform 7 unfold the anti-fall guardrails 73, and the card slots 82 of the mounting plate 8 at the front end of the platform realize the multi-platform boltless combination, and the anti-slip grille 81 is rotated and snapped into the connecting slot 83 through the connecting block 84; The anti-fall net assembly 9 at the bottom of the fixed platform uses a pressure sensor 76 to detect guardrail impacts, triggering a catapult 91 that drives a transmission rod 92 to deploy a folding rod 93, instantly tensioning the buffer net 94. The 300mm rung spacing of the ladder 75, combined with adjustable support legs, forms a standard climbing passage. The entire installation process utilizes laser-guided hoisting based on coordinate formulas generated by the BIM model. After the platform is assembled, the anti-fall system triggering mechanism is verified through impact with a counterweight ball. This summarizes the operating principles of this temporary support with a safe passage and operating platform, as well as its installation method.

Claims

1. A temporary support with a safety passage and an operating platform, comprising a universal support (1), characterized in that: A hydraulic telescopic rod (2) is provided on the top of the universal support (1), and a connecting seat (3) is connected to the top of the hydraulic telescopic rod (2). A column (4) is provided on one side of the connecting seat (3), and an ear plate (5) is provided on one side of the column (4). Two groups of ear plates (5) are provided, and the two groups of ear plates (5) are evenly arranged along the vertical direction of the column (4). A double locking structure (6) is provided on one side of the ear plate (5), and a folding platform (7) is provided on one side of the double locking structure (6). The folding platform (7) includes An operating platform (71), a rotating shaft (72) and an anti-fall guardrail (73), wherein the operating platform (71) is provided with a rotating shaft (72) on both sides, one side of the rotating shaft (72) is connected to the anti-fall guardrail (73), and the anti-fall guardrail (73) is connected to the column (4) through the double locking structure (6), and a mounting plate (8) is provided on the side of the operating platform (71) away from the rotating shaft (72), an anti-slip grille (81) is provided on one side of the mounting plate (8), and an anti-fall net assembly (9) is provided at the bottom of the mounting plate (8).

2. The temporary support with a safety passage and an operating platform according to claim 1, characterized in that: A base bottom plate (11) is provided at the bottom of the universal support (1), a substrate scale plate (12) is provided on the outer wall of the universal support (1), and a 0-360° division is engraved on the outer wall of the substrate scale plate (12). A laser receiver (13) is provided at the connection between the universal support (1) and the hydraulic telescopic rod (2), and the receiving surface of the laser receiver (13) has an inclination angle of 45°.

3. The temporary support with a safety passage and an operating platform according to claim 1, characterized in that: A combined plate (41) is provided at the top of the column (4), and the number of layers of the column (4) can be increased by the combined plate (41). Through holes (42) are provided on the outer wall of the combined plate (41). The through holes (42) are provided in a plurality of groups, and each group of the through holes (42) is evenly arranged along the horizontal direction of the combined plate (41).

4. The temporary support with a safety passage and an operating platform according to claim 1, characterized in that: The double locking structure (6) comprises a pin hole (61), a stress locking steel cable (62), a manual knob (63) and a spring locking pin (64); the pin hole (61) is provided inside the ear plate (5); a stress locking steel cable (62) is provided on one side of the pin hole (61); a manual knob (63) is provided on one side of the stress locking steel cable (62); a spring locking pin (64) is provided on one side of the small hole (61); and the spring locking pin (64) is connected to the anti-fall guardrail (73).

5. The temporary support with a safety passage and an operating platform according to claim 1, characterized in that: The mounting plate (8) is provided with card slots (82) on both sides. The card slots (82) have the same cross-section as the operating platform (71), so that two groups of the operating platforms (71) can be combined through the mounting plate (8). A connecting slot (83) is provided above the card slot (82). Connecting blocks (84) are provided on both sides of the anti-slip grille (81). The anti-slip grille (81) is connected to the connecting slot (83) through the connecting blocks (84).

6. The temporary support with a safety passage and an operating platform according to claim 1, characterized in that: The anti-falling net assembly (9) comprises an ejector (91), a transmission rod (92), a folding rod (93), a buffer net (94) and a net body fixing frame (95). The bottom two sides of the mounting plate (8) are both provided with an ejector (91). One side of the ejector (91) is provided with a transmission rod (92). One side of the transmission rod (92) is provided with a folding rod (93). One side of the folding rod (93) is provided with a buffer net (94). One side of the buffer net (94) is provided with a net body fixing frame (95). The net body fixing frame (95) is connected to the operating platform (71). A pressure sensor (76) is provided on the outer wall of the anti-falling guardrail (73). The ejector (91) drives the folding rod (93) to drive the buffer net (94) to open through the change of the pressure sensor (76).

7. The temporary support with a safety passage and an operating platform according to claim 1, characterized in that: A ladder plate (74) is provided on one side of the operating platform (71), a ladder (75) is provided on the top of the ladder plate (74), and the step spacing of the ladder (75) is 300 mm.

8. A method for installing a temporary support with a safety passage and an operating platform, applicable to the temporary support with a safety passage and an operating platform according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1 three-dimensional pre-assembly: importing the BIM model of the steel tower to generate the space coordinates of the bracket unit, and then opening the anti-fall guardrail (73) of the folding platform (7) on site through the rotating shaft (72) to combine the spring locking pin (64) with the anti-fall guardrail (73); S2 laser-guided hoisting: a laser reflection target is set on the top of the column (4), and the column (4) and the folding platform (7) are hoisted through the arch rib construction control network; S3 double locking activation: after the folding platform (7) falls into place, the spring locking pin (64) springs into the pin hole (61), and the stress locking cable (62) is tightened by the manual knob (63); S4 hydraulic curved surface fitting: the universal support (1) receives the laser point on the bottom surface of the arch rib through the laser receiver (13) to calculate the height difference, and dynamically adjusts it through the universal support (1) and the hydraulic telescopic rod (2); S5 Anti-fall system joint debugging: The folding platform (7) is combined with the mounting plate (8) to form an integral temporary support. After the connection is completed, the anti-fall guardrail (73) is hit by a counterweight ball to verify the triggering threshold and ejection time of the anti-fall net component (9).

9. The method for installing a temporary support with a safety passage and an operating platform according to claim 8, characterized in that: In step S1, the formula for generating the spatial coordinates of the bracket unit is as follows: ； in, Represents the coordinates of the center point of the i-th bracket unit; Indicates the coordinates of the center point of the cross section; Indicates the projected length of the operating platform; represents the tangent vector of the arch rib centerline; R represents the arch rib curvature radius; represents the normal vector of the arch rib section; represents the binormal vector of the arch rib section; It represents the unit installation phase angle, and the corresponding data is input through the formula to generate the spatial coordinates of the bracket unit.

10. The method for installing a temporary support with a safety passage and an operating platform according to claim 8, characterized in that: In step S4, the height difference is calculated as follows: ； in, Indicates the actual height difference; Indicates the laser ranging value; Indicates the inclination angle of the arch rib surface; Indicates the laser emission elevation angle; Indicates the design calibration height; Indicates the amount of foundation settlement; Indicates the temperature compensation coefficient; Represents the temperature difference, which can be obtained by the calculation formula: >10mm, the hydraulic telescopic rod (2) is lifted; <-10mm, the hydraulic telescopic rod (2) contracts.

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