An automated telescoping adjustable overhang platform and method of use thereof

Abstract

The application discloses an automatic telescopic adjustable cantilever platform and a use method thereof, and relates to the technical field of bridge construction. The main supporting beam is connected with the climbing formwork frame body through bolts, the main supporting beam is slidably connected with the horizontal beam through the hand-cranked rack structure, the horizontal beam is provided with the reverse-pulling pull rod and the pulley assembly, one end of the reverse-pulling pull rod is fixedly connected with the horizontal beam, and the other end is connected with the main supporting beam, one end of the telescopic inclined rod is hingedly connected with the climbing formwork frame body, and the other end is hingedly connected with the horizontal beam through a support. The application solves the defects of difficult telescopic adjustment, complicated operation, insufficient safety protection and the like in the prior art, and realizes automatic, convenient and safe and reliable adjustment of the cantilever platform.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, specifically to an automated telescopic adjustable cantilever platform and its usage method. Background Technology

[0002] The construction of cable-stayed bridge towers typically employs climbing formwork, with personnel moving up and down via construction hoists. A pedestrian walkway must be provided between the climbing formwork and the construction hoist; for teardrop-shaped tower structures, the length of this walkway varies gradually with the tower's height. Existing cantilever platforms are mostly fixed-length structures, with fixed lengths for the support beams and steel cables, which cannot accommodate the variable-length requirements of teardrop-shaped cable-stayed bridge towers. When the cantilever length needs to be changed, workers must manually replace the steel cables and re-anchor the diagonal braces in a high-altitude, edge-prone environment. This operation is cumbersome, labor-intensive, and poses serious safety risks such as falls from height and falling objects. Furthermore, the platform's turnover efficiency is low, making it difficult to meet the requirements of dynamic construction. Therefore, there is an urgent need for an automated, telescopic, adjustable cantilever platform and its usage method to solve these problems. Summary of the Invention

[0003] In view of this, the present invention provides an automated telescopic adjustable cantilever platform and its usage method, which solves the defects of existing technologies such as difficulty in platform telescopic adjustment, cumbersome operation, and insufficient safety protection, and realizes the automated, convenient, safe and reliable adjustment of the cantilever platform.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An automated telescopic adjustable cantilever platform includes: a main support beam, a hand-cranked rack and pinion structure, a counter-pull rod, a telescopic diagonal rod, a pulley assembly, and a horizontal beam. The main support beam is connected to the climbing formwork frame by bolts, and the main support beam is slidably connected to the horizontal beam by the hand-cranked rack and pinion structure. The horizontal beam is equipped with a counter-pull rod and a pulley assembly. One end of the counter-pull rod is fixedly connected to the horizontal beam, and the other end is connected to the main support beam. One end of the telescopic diagonal rod is hinged to the climbing formwork frame, and the other end is hinged to the horizontal beam through a support.

[0005] Furthermore, the hand-cranked rack and pinion structure includes a gear, a rack, and a hand crank. The upper end of the rack is connected to a horizontal beam, the lower end of the rack is connected to a main support beam, the gear and the rack mesh with each other, and the hand crank is fixedly connected to the gear.

[0006] Furthermore, the main support beam is provided with multiple through holes spaced apart, and the other end of the anti-pull rod is connected to the through holes of the main support beam by a pin.

[0007] Furthermore, the telescopic diagonal rod adopts a screw and nut structure, and the overall length of the telescopic diagonal rod is controlled by rotating the screw. The telescopic diagonal rod is synchronously matched with the telescopic amount of the main support beam.

[0008] Furthermore, the pulley assembly includes a first fixed pulley, a second fixed pulley, a fall arrestor, and a steel wire rope. The first fixed pulley is fixedly installed at one end of the horizontal beam. One end of the steel wire rope is wound around the first fixed pulley, and the other end is fixedly connected to the other end of the horizontal beam through the second fixed pulley. A fall arrestor is provided on the end of the steel wire rope near the second fixed pulley. The extension and contraction of the steel wire rope are synchronously matched with the extension and contraction of the main support beam.

[0009] Furthermore, the hand crank is equipped with a self-locking device for locking the gear after adjustment is completed.

[0010] A method for using an automated telescopic adjustable cantilever platform includes: Step S1: Secure the main support beam to the climbing formwork frame using bolts; Step S2: Connect the horizontal beam to the main support beam via a hand-cranked rack and pinion structure, and connect the hand crank to the gear so that the gear and rack mesh with each other; Step S3: Hinge one end of the telescopic diagonal brace to the climbing formwork frame, and hinge the other end to the horizontal beam through the support; Step S4: Fix one end of the anti-pull rod to the horizontal beam, and connect the other end to the through hole on the main support beam through a pin; Step S5: Install the pulley assembly, fix fixed pulley one to one end of the horizontal beam, wrap one end of the steel wire rope around fixed pulley one, and then wrap the other end around fixed pulley two and fix it to the other end of the horizontal beam. Install a fall arrestor on the steel wire rope. Step S6: Lay walkway slabs on the upper surface of the horizontal beam, and install guardrails and kickboards; Step S7: When it is necessary to adjust the cantilever length of the horizontal beam, loosen the pin on the main support beam, separate the anti-pull rod from the main support beam, release the self-locking device on the hand crank, rotate the hand crank, and drive the rack and pinion through the gear to drive the horizontal beam to extend or retract horizontally relative to the main support beam. Step S8: Simultaneously adjust the length of the telescopic diagonal brace to match the telescopic expansion and contraction of the horizontal beam. Step S9: After adjustment, connect the counter-pull rod to the corresponding through hole on the main support beam and lock the self-locking device on the hand crank.

[0011] The beneficial effects of this invention are as follows: 1. This invention achieves automated telescopic adjustment of the cantilever platform through the coordinated arrangement of the main support beam, hand-cranked rack and pinion structure, anti-tension rod, telescopic diagonal rod, pulley assembly and horizontal beam. Operators can achieve precise telescopic adjustment of the horizontal beam by turning the hand crank, which greatly improves construction efficiency and ease of operation.

[0012] 2. This invention provides a double-layered and effective safety protection measure by setting up telescopic diagonal bars and pulley assemblies to prevent platform fall accidents.

[0013] 3. The present invention has multiple through holes spaced apart on the main support beam, and the anti-pull rod can be connected at different positions according to the platform's extension and contraction, thereby improving the platform's adaptability.

[0014] 4. The telescopic diagonal rod of the present invention adopts a screw and nut structure, which can realize stepless adjustment and match the telescopic amount of the horizontal beam synchronously, ensuring that the platform can be effectively supported under various cantilever lengths.

[0015] 5. Operators can adjust the platform length and form a stable force system without disassembling or replacing any components in a high-altitude, edge-prone environment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; In the figure: 1-Main support beam; 2-Hand-cranked rack and pinion structure; 3-Reverse tie rod; 4-Fixed pulley one; 5-Wire rope; 6-Fixed pulley two; 7-Telescopic diagonal bar; 8-Through hole; 9-Fall arrestor; 10-Horizontal beam. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see the appendix Figure 1 This invention provides an automated telescopic adjustable cantilever platform, comprising: a main support beam 1, a hand-cranked rack and pinion structure 2, a counter-pull rod 3, a telescopic diagonal rod 7, a pulley assembly, and a horizontal beam 10. The main support beam 1 is connected to the climbing formwork frame by bolts, and the main support beam 1 is slidably connected to the horizontal beam 10 by the hand-cranked rack and pinion structure 2. The horizontal beam 10 is provided with a counter-pull rod 3 and a pulley assembly. One end of the counter-pull rod 3 is fixedly connected to the horizontal beam 10, and the other end is connected to the main support beam 1. One end of the telescopic diagonal rod 7 is hinged to the climbing formwork frame, and the other end is hinged to the horizontal beam 10 through a support.

[0020] Preferably, the hand-cranked rack and pinion structure 2 includes a gear, a rack, and a hand crank. The upper end of the rack is connected to the horizontal beam 10, and the lower end of the rack is connected to the main support beam 1. The gear and rack mesh with each other, and the hand crank is fixedly connected to the gear. When the operator rotates the hand crank, the gear rotates accordingly, driving the rack to move linearly, which in turn causes the horizontal beam 10 to move horizontally relative to the main support beam 1. The hand crank is equipped with a self-locking device (such as a ratchet and pawl structure), which can automatically lock the gear after adjustment to prevent the horizontal beam 10 from accidentally retracting under construction loads.

[0021] Preferably, the main support beam 1 has multiple through holes 8 spaced apart, and the other end of the counter-tension rod 3 is connected to the through holes 8 in the main support beam 1 via a pin. Since the main support beam 1 has multiple through holes 8, the corresponding through holes 8 can be selected for connection according to the different extension and contraction positions of the horizontal beam 10, so as to realize the flexible adjustment of the counter-tension rod 3.

[0022] Preferably, the telescopic diagonal rod 7 adopts a screw and nut structure. The overall length of the telescopic diagonal rod 7 is controlled by rotating the screw, and the telescopic diagonal rod 7 is synchronously matched with the telescopic amount of the main support beam 1. When adjusting the telescopic amount of the horizontal beam 10, the length of the telescopic diagonal rod 7 is adjusted synchronously to keep the two in sync, ensuring that the platform can obtain effective support under different cantilever lengths.

[0023] Preferably, the pulley assembly includes a first fixed pulley 4, a second fixed pulley 6, a fall arrester 9, and a steel wire rope 5. The first fixed pulley 4 is fixedly installed at one end of the horizontal beam 10. One end of the steel wire rope 5 is wound around the first fixed pulley 4, and the other end is fixedly connected to the other end of the horizontal beam 10 through the second fixed pulley 6. A fall arrester 9 is provided on the end of the steel wire rope 5 near the second fixed pulley 6. The extension and retraction of the steel wire rope 5 are synchronized with that of the main support beam 1. The fall arrester 9 is a centrifugal fall arrester. When the steel wire rope 5 breaks or slides down at excessive speed, the centrifugal block inside the fall arrester 9 is thrown out under the action of centrifugal force, locking the guide rail or rope, realizing automatic locking and braking, and effectively preventing the platform from falling. The length of the steel wire rope 5 is synchronized with the extension and retraction of the horizontal beam 10. When the horizontal beam 10 extends or retracts, the length of the steel wire rope 5 is adjusted accordingly.

[0024] Preferably, the hand crank is equipped with a self-locking device for locking the gear after adjustment.

[0025] A method for using an automated telescopic adjustable cantilever platform includes: Step S1: Fix the main support beam 1 to the climbing formwork frame using bolts; Step S2: Connect the horizontal beam 10 to the main support beam 1 via the hand-cranked rack and pinion structure 2, and connect the hand crank to the gear so that the gear and rack mesh with each other; Step S3: Hinge one end of the telescopic diagonal rod 7 to the climbing formwork frame, and hinge the other end to the horizontal beam 10 through the support; Step S4: Fix one end of the anti-pull rod 3 to the horizontal beam 10, and connect the other end to the through hole 8 on the main support beam 1 through a pin; Step S5: Install the pulley assembly, fix the fixed pulley 4 to one end of the horizontal beam 10, wrap one end of the steel wire rope 5 around the fixed pulley 4, and then fix the other end of the steel wire rope 5 to the other end of the horizontal beam 10 after passing over the fixed pulley 6. Install the fall arrestor 9 on the steel wire rope 5. Step S6: Lay walkway slabs on the upper surface of horizontal beam 10, and install guardrails and kickboards; Step S7: When it is necessary to adjust the cantilever length of the horizontal beam 10, loosen the pin on the main support beam 1, separate the anti-pull rod 3 from the main support beam 1, release the self-locking device on the hand crank, rotate the hand crank, and drive the rack and pinion through the gear to drive the horizontal beam 10 to extend or retract horizontally relative to the main support beam 1. Step S8: Simultaneously adjust the length of the telescopic diagonal rod 7 to keep it synchronized with the telescopic amount of the horizontal beam 10; Step S9: After adjustment, connect the counter-pull rod 3 to the corresponding through hole 8 on the main support beam 1, and lock the self-locking device on the hand crank.

[0026] When it is necessary to adjust the cantilever length of the horizontal beam 10, the operator releases the self-locking device on the hand crank and removes the counter-pull rod 3 from the current through hole 8. The hand crank is then turned, which drives the gear to rotate. The gear drives the rack to move in a straight line, thereby causing the horizontal beam 10 to extend or retract horizontally relative to the main support beam 1.

[0027] Simultaneously, the operator adjusts the length of the telescopic diagonal rod 7 to synchronize it with the extension and retraction of the horizontal beam 10. When the horizontal beam 10 extends, the telescopic diagonal rod 7 extends accordingly; when the horizontal beam 10 retracts, the telescopic diagonal rod 7 shortens accordingly.

[0028] After the horizontal beam 10 is adjusted to the target position, the operator selects a suitable through hole 8 according to the new cantilever length and re-fixes the counter-pull rod 3 with a pin. Then, the self-locking device on the hand crank is tightened to complete the fixing of the horizontal beam 10.

[0029] At this time, the steel wire rope 5 in the pulley assembly automatically adjusts its length as the horizontal beam 10 extends and retracts, and the fall arrestor 9 remains in standby mode. In the event of an accident such as the steel wire rope 5 breaking or excessive speed causing a downward slide, the fall arrestor 9 automatically triggers a locking brake to prevent the platform from falling and ensure construction safety.

[0030] Construction workers can carry out construction operations such as rebar tying and formwork installation on the walkway slab of horizontal beam 10.

[0031] This invention realizes the automation, convenience, safety and reliability of cantilever platform adjustment, effectively solving the problems of difficult platform extension and adjustment, cumbersome operation and insufficient safety protection in the prior art. It has good engineering practical value and promotion prospects.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions are also within the scope of protection of the present invention.

Claims

1. An automated telescopic adjustable cantilever platform, characterized in that, include: The main support beam (1), the hand-cranked rack structure (2), the anti-pull rod (3), the telescopic diagonal rod (7), the pulley assembly and the horizontal beam (10) are provided. The main support beam (1) is connected to the climbing formwork frame by bolts. The main support beam (1) is slidably connected to the horizontal beam (10) by the hand-cranked rack structure (2). The horizontal beam (10) is provided with the anti-pull rod (3) and the pulley assembly. One end of the anti-pull rod (3) is fixedly connected to the horizontal beam (10) and the other end is connected to the main support beam (1). One end of the telescopic diagonal rod (7) is hinged to the climbing formwork frame and the other end is hinged to the horizontal beam (10) through the support.

2. The automated telescopic adjustable cantilever platform according to claim 1, characterized in that, The hand-cranked rack structure (2) includes a gear, a rack and a hand crank. The upper end of the rack is connected to the horizontal beam (10), and the lower end of the rack is connected to the main support beam (1). The gear and the rack mesh with each other, and the hand crank is fixedly connected to the gear.

3. The automated telescopic adjustable cantilever platform according to claim 1, characterized in that, The main support beam (1) is provided with multiple through holes (8) spaced apart, and the other end of the anti-pull rod (3) is connected to the through holes (8) of the main support beam (1) by a pin.

4. The automated telescopic adjustable cantilever platform according to claim 1, characterized in that, The telescopic diagonal rod (7) adopts a screw and nut structure. The overall length of the telescopic diagonal rod (7) is controlled by rotating the screw. The telescopic diagonal rod (7) is synchronously matched with the telescopic amount of the main support beam (1).

5. The automated telescopic adjustable cantilever platform according to claim 1, characterized in that, The pulley assembly includes a fixed pulley one (4), a fixed pulley two (6), a fall arrester (9), and a steel wire rope (5). The fixed pulley one (4) is fixedly installed at one end of the horizontal beam (10). One end of the steel wire rope (5) is wrapped around the fixed pulley one (4), and the other end is fixedly connected to the other end of the horizontal beam (10) through the fixed pulley two (6). A fall arrester (9) is provided on one end of the steel wire rope (5) near the fixed pulley two (6). The extension and contraction of the steel wire rope (5) are synchronously matched with the extension and contraction of the main support beam (1).

6. The method of using an automated telescopic adjustable cantilever platform according to claim 2, characterized in that, The hand crank is equipped with a self-locking device for locking the gear after adjustment.

7. The method of using an automated telescopic adjustable cantilever platform according to claims 1-6, characterized in that, include: Step S1: Fix the main support beam (1) to the climbing formwork frame with bolts; Step S2: Connect the horizontal beam (10) to the main support beam (1) via the hand-cranked rack and pinion structure (2), and connect the hand crank to the gear so that the gear and rack mesh with each other; Step S3: Hinge one end of the telescopic diagonal bar (7) to the climbing formwork frame, and hinge the other end to the horizontal beam (10) through the support; Step S4: Fix one end of the anti-pull rod (3) to the horizontal beam (10), and connect the other end to the through hole (8) on the main support beam (1) through a pin; Step S5: Install the pulley assembly, fix the first fixed pulley (4) to one end of the horizontal beam (10), wrap one end of the wire rope (5) around the first fixed pulley (4), and then connect the other end of the wire rope (5) to the other end of the horizontal beam (10) after passing over the second fixed pulley (6). Install the fall arrestor (9) on the wire rope (5). Step S6: Lay walkway slabs on the upper surface of the horizontal beam (10), and install guardrails and kickboards; Step S7: When it is necessary to adjust the cantilever length of the horizontal beam (10), loosen the pin on the main support beam (1), separate the anti-pull rod (3) from the main support beam (1), release the self-locking device on the hand crank, rotate the hand crank, and drive the rack and pinion through the gear to drive the horizontal beam (10) to extend or retract horizontally relative to the main support beam (1). Step S8: Simultaneously adjust the length of the telescopic diagonal bar (7) to keep it synchronized with the telescopic amount of the horizontal beam (10); Step S9: After adjustment, connect the counter-pull rod (3) to the corresponding through hole (8) on the main support beam (1) and lock the self-locking device on the hand crank.

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