Cantilever discharging platform cable-stayed steel wire rope pull-up point conversion support and cantilever discharging platform device thereof

Abstract

The utility model provides an overhanging discharging platform cable-stayed steel wire rope pull-up point conversion support and an overhanging discharging platform device thereof, and belongs to the technical field of buildings, and the overhanging discharging platform device comprises an overhanging main beam, a rear-end U-shaped pre-embedded anchor ring device, a front-end U-shaped pre-embedded anchor ring device, a discharging platform, a cable-stayed steel wire rope and an anchoring device. The utility model provides a safe, economical and reusable conversion support for a pull-up anchoring point of a cable-stayed steel wire rope of a section steel overhanging discharging platform of a newly-built multi-layer or high-rise building. Front-end U-shaped steel bar anchor rings which are pre-embedded on the upper layer and the upper layer of the section steel overhanging discharging platform and are necessary for later installation of a platform main beam are utilized in advance, and the U-shaped steel bar anchor rings are respectively sleeved with a conversion support so that the U-shaped steel bar anchor rings can respectively serve as pull-up anchoring points of a cable-stayed working steel wire rope and a safety steel wire rope of the section steel overhanging discharging platform. The U-shaped steel bar anchor ring has multiple purposes in sequence.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a conversion support for the upper pull point of the inclined steel wire rope of a cantilever unloading platform and its cantilever unloading platform device. Background Technology

[0002] Currently, in the construction of reinforced concrete cast-in-place structures for building main structures, the cast-in-place beams, slabs, walls, and columns generally adopt a steel pipe + wooden formwork support system. After the lower floors of reinforced concrete structure reach the age required for formwork removal, the steel pipes, square timber, and wooden formwork, etc., are used as temporary materials after formwork removal. These materials are then transported in batches by tower crane to the upper floors to be constructed for continued reuse via a steel cantilever unloading platform. On one hand, the H-beam main beam of the steel cantilever unloading platform is installed and fixed by pre-embedded U-shaped steel anchor rings at the front and rear ends on the floor. The exposed ends of the U-shaped steel anchor rings have a certain length of thread, and the H-beam main beam is locked in the U-shaped anchor rings using steel pressure plates, steel washers, and double nuts. On the other hand, the four upper anchor points of the inclined steel wire ropes (including outer and inner ropes) of the steel cantilever unloading platform are usually located on the floor above and two floors above. Each upper anchor point of the inclined steel wire rope is specially designed. Reinforcing bar anchor rings. U-shaped reinforcing bar anchor rings and Rebar anchor rings are discarded after use, belonging to disposable embedded iron components. However, if the proposed building has many floors, or is a high-rise or even super high-rise building, the anchor points used for the inclined steel wire ropes of the steel cantilever unloading platform... The number of steel reinforcement anchor rings is large, and the time and cost required for their fabrication, installation, and removal are enormous. Therefore, a safe, economical, and reusable support is needed for the cable-stayed anchor points of the inclined steel wire ropes of the steel cantilever unloading platform in newly constructed multi-story or high-rise buildings. Utility Model Content

[0003] The purpose of this utility model is to provide a conversion support for the upper pull point of the inclined steel wire rope of the cantilever unloading platform and the cantilever unloading platform device, so as to solve the technical problems mentioned in the background art.

[0004] For the anchoring points of the inclined steel wire ropes of the steel cantilever unloading platform in newly constructed multi-story or high-rise buildings, a safe, economical, and reusable conversion support is needed. This can be achieved by pre-embedding the U-shaped steel anchor rings (which are essential for the later installation of the platform's main beam) on the upper and second floors of the steel cantilever unloading platform. A conversion support can then be fitted onto each of these U-shaped anchor rings, making them the anchoring points for the inclined working steel wire rope (outer rope) and safety steel wire rope (inner rope) of the lower floor's steel cantilever unloading platform, respectively. This allows the U-shaped steel anchor ring to serve multiple purposes, eliminating the need for pre-embedding of specially made supports. The steel bar anchor ring serves as the anchor point for the inclined steel wire rope of the cantilevered steel unloading platform, ensuring safe early lowering and reducing construction time and costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A conversion support for the upper pull point of the inclined steel wire rope of a cantilever unloading platform, the anchoring device includes a U-shaped pre-embedded anchor ring, a shield-shaped steel plate, an I-beam, a rectangular steel plate and a steel nut. The U-shaped pre-embedded anchor ring is pre-embedded in the concrete wall. The shield-shaped steel plate passes through the U-shaped pre-embedded anchor ring and is set on the floor and extends out of the floor. The I-beam is set on the upper end of the shield-shaped steel plate. The rectangular steel plate passes through the U-shaped pre-embedded anchor ring and is pressed on the upper end of the I-beam. The steel nut is threaded to the top of the U-shaped pre-embedded anchor ring and tightens the rectangular steel plate.

[0007] Furthermore, a steel washer is provided between the steel nut and the rectangular steel plate, and the rectangular steel plate is welded to the top of the I-beam to form an integral component.

[0008] Furthermore, the shield-shaped steel plate is configured as a shield-shaped flat steel plate with three through holes inside. Two of the through holes pass through the U-shaped pre-embedded anchor rings, and the other through hole extends out of the floor and is connected to the inclined steel wire rope.

[0009] 4. A cantilever unloading platform device with a conversion support for the upper pull point of the inclined steel wire rope, characterized in that: it includes a cantilever main beam, a rear U-shaped pre-embedded anchor ring device, a front U-shaped pre-embedded anchor ring device, an unloading platform, an inclined steel wire rope, and the aforementioned anchoring device; the rear U-shaped pre-embedded anchor ring device and the front U-shaped pre-embedded anchor ring device are installed on the floor; one end of the cantilever main beam is fixed to the rear U-shaped pre-embedded anchor ring device and the front U-shaped pre-embedded anchor ring device; the other end of the cantilever main beam extends beyond the floor; the unloading platform is installed on the corresponding end of the cantilever main beam extending beyond the floor; one end of the inclined steel wire rope is connected to the corresponding end of the cantilever main beam extending beyond the floor; the anchoring device is installed on the concrete beam of the floor of a higher floor; the other end of the inclined steel wire rope is connected to the anchoring device; and the inclined steel wire rope is inclined.

[0010] Furthermore, the inclined steel wire rope is connected to the shield-shaped steel plate through a wire rope clamp.

[0011] Furthermore, both the rear-end U-shaped pre-embedded anchor ring device and the front-end U-shaped pre-embedded anchor ring device are pre-embedded in the floor structure concrete, and there are two rear-end U-shaped pre-embedded anchor ring devices.

[0012] Furthermore, when the cantilevered unloading platform needs to be moved to the next floor, the U-shaped pre-embedded anchor ring on the anchoring device can be used directly as the front-end U-shaped pre-embedded anchor ring device.

[0013] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0014] This invention provides a safe, economical, and reusable conversion support for the upper anchoring point of the inclined steel wire rope of a steel cantilever unloading platform in newly constructed multi-story or high-rise buildings. By utilizing the pre-embedded U-shaped steel anchor rings on the upper one and two floors of the steel cantilever unloading platform (essential for later installation of the platform's main beam), a conversion support is fitted onto each U-shaped steel anchor ring. This allows the U-shaped steel anchor ring to serve as the upper anchoring point for both the working and safety steel wire ropes of the steel cantilever unloading platform, thus achieving multiple uses from a single U-shaped steel anchor ring without the need for pre-embedded special supports. The steel bar anchor ring serves as the anchor point for the inclined steel wire rope of the cantilevered steel unloading platform, ensuring safe early lowering and reducing construction time and costs. Attached Figure Description

[0015] Figure 1 This is a side view of the cantilevered unloading platform of this utility model;

[0016] Figure 2 This is a top view of the cantilevered unloading platform of this utility model;

[0017] Figure 3 This is a sectional view of the anchoring device of this utility model;

[0018] Figure 4 This is a side view of the anchoring device of this utility model;

[0019] Figure 5 This is a schematic diagram of the shield-shaped steel plate structure of this utility model.

[0020] In the attached diagram, A-floor, 1-cantilever main beam, 2-rear U-shaped embedded anchor ring device, 3-front U-shaped embedded anchor ring device, 4-unloading platform, 5- inclined steel wire rope, 6-steel wire rope clamp, 7-external scaffolding, 8-anchoring device, 9-U-shaped embedded anchor ring, 10-concrete beam, 11-shield steel plate, 12-I-beam, 13-rectangular steel plate, 14-steel washer, 15-steel nut. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0022] like Figure 1-2As shown, a cantilever unloading platform with inclined steel wire rope pull-up point conversion support and its cantilever unloading platform device includes a cantilever main beam 1, a rear U-shaped pre-embedded anchor ring device 2, a front U-shaped pre-embedded anchor ring device 3, an unloading platform 4, an inclined steel wire rope 5, and an anchoring device 8. The rear U-shaped pre-embedded anchor ring device 2 and the front U-shaped pre-embedded anchor ring device 3 are set on floor A. One end of the cantilever main beam 1 is fixed to the rear U-shaped pre-embedded anchor ring device 2 and the front U-shaped pre-embedded anchor ring device 3, and the other end of the cantilever main beam 1 extends out of floor A. The unloading platform 4 is set on the corresponding end of the cantilever main beam 1 extending out of floor A. One end of the inclined steel wire rope 5 is connected to the corresponding end of the cantilever main beam 1 extending out of floor A. The anchoring device 8 is set on the concrete beam 10 of floor A at a higher floor. The other end of the inclined steel wire rope 5 is connected to the anchoring device 8. The inclined steel wire rope 5 is inclined.

[0023] In this embodiment of the utility model, such as Figure 3-4 As shown, the anchoring device 8 includes a U-shaped pre-embedded anchor ring 9, a shield-shaped steel plate 11, an I-beam 12, a rectangular steel plate 13, and a steel nut 15. The U-shaped pre-embedded anchor ring 9 is pre-embedded in the concrete beam 10. The shield-shaped steel plate 11 passes through the U-shaped pre-embedded anchor ring 9 and is set on the floor 10 and extends out of the floor 10. The I-beam 12 is set at the upper end of the shield-shaped steel plate 11. The rectangular steel plate 13 passes through the U-shaped pre-embedded anchor ring 9 and is pressed against the upper end of the I-beam 12. The steel nut 15 is threaded to the top of the U-shaped pre-embedded anchor ring 9 and tightens the rectangular steel plate 13.

[0024] The pull-point conversion support includes component A, component B, and component C; wherein: component A includes a shield-shaped steel plate with a cross-section of 220x216x20mm (numbered 1), and drilled holes in the plane of the shield-shaped steel plate. There are a total of 3 round holes (the hole positioning is shown in the component A diagram). Hole for insertion For pre-embedded U-shaped steel bar bolts, (For inserting the upper pull end of the inclined steel wire rope). Component B includes a 150mm long 18# I-beam (number 2) and a steel pressure plate (number 3) with a cross-sectional dimension of 220x100x10mm. Two holes are drilled in each of the steel pressure plates. The hole positioning is shown in the detailed drawing of the steel pressure plate (No. 3). Hole for insertion (For pre-embedded U-shaped steel bar bolts); One end of the 18# I-beam (number 2) is flush with one end of the steel pressure plate (number 3) and fully welded around it to form a whole component B, so that the 18# I-beam (number 2) and the steel pressure plate (number 3) form a whole component B. Component C includes a 5mm thick steel washer and double nuts (which can be used with...) (Pre-embedded U-shaped steel bar bolts).

[0025] In this embodiment of the utility model, the inclined steel wire rope 5 is connected to the shield-shaped steel plate 11 through the steel wire rope clamp 6.

[0026] In this embodiment of the utility model, a steel washer 14 is provided between the steel nut 15 and the rectangular steel plate 13, and the rectangular steel plate 13 is welded to the top of the I-beam 12 to form an integral component.

[0027] In this embodiment of the utility model, both the rear U-shaped pre-embedded anchor ring device 2 and the front U-shaped pre-embedded anchor ring device 3 are pre-embedded in the floor A, and there are two rear U-shaped pre-embedded anchor ring devices 2.

[0028] In this embodiment of the utility model, when the cantilever unloading platform needs to be moved to the next floor, the U-shaped pre-embedded anchor ring 9 on the anchoring device 8 is directly used as the front-end U-shaped pre-embedded anchor ring device 3.

[0029] Assuming the cantilevered steel unloading platform is planned to be installed on floors N, N+1, N+2, and N+n, during the construction of the reinforced concrete structural beams and slabs on floors N, N+1, N+2, ..., N+n, considering the future installation and anchoring requirements of the two cantilevered I-beams of the cantilevered steel unloading platform, a set of U-shaped threaded U-shaped steel anchor rings (hereinafter referred to as the front-end U-shaped anchor rings) should be pre-embedded 100mm from the end of the planned installation position of each parallel cantilevered I-beam on each floor. Two sets of U-shaped steel bars with a spacing of 200mm should also be pre-embedded at least 200mm from the end of the cantilevered I-beam. Anchor rings (hereinafter referred to as end U-shaped anchor rings) are typically constructed as follows: For cast-in-place reinforced concrete slabs with a thickness of 100-120mm, both main I-beams of the cantilevered steel unloading platform use 6-meter-long #18 I-beams. The front U-shaped anchor ring is made of 18mm diameter round steel with threads at both ends (thread length approximately 100mm), bent into a U-shaped steel anchor ring (450+120 (internal clearance)+450mm). The end U-shaped anchor ring is made of 18mm diameter round steel with threads at both ends (thread length approximately 100mm), bent into a U-shaped steel anchor ring (350+120 (internal clearance)+350mm). That is, during the construction of the reinforced concrete structural beams and slabs of the Nth, N+1th, N+2th, ..., N+nth floors, the front and end U-shaped anchor rings are pre-embedded at the positions of each parallel cantilevered I-beam main beam on each floor according to conventional requirements, following the progress of the floor slab construction.

[0030] Installation process of the Nth floor steel cantilever unloading platform: 1. Within the working radius of the tower crane, according to the construction plan requirements of the steel cantilever unloading platform, first complete the welding or bolting assembly of the platform on a level outdoor ground. This includes assembling the platform's main beam, secondary beams, base plate, railings, platform hoisting wire rope, platform working wire rope (also known as the outer rope), and platform safety wire rope (also known as the inner rope) in sequence. Check the integrity and stability of the steel cantilever unloading platform and conduct a trial lift. 2. After the tower crane hook hooks onto the platform hoisting wire rope and reaches the vicinity of the external scaffolding on the Nth floor, temporarily remove the safety netting of the external scaffolding near the platform to be installed. 3. With the tower crane continuously assisting, guide the cantilevered I-beam main beam of the platform towards the structural floor slab, through the external scaffolding, and onto the inner side of the front and rear U-shaped anchor rings on the Nth floor. Adjust the safe clearance between the unloading platform and the external uprights of the external scaffolding. Insert steel pressure plates and steel washers sequentially onto the top of the cantilevered I-beam main beam within the positions of the front and rear U-shaped anchor rings, and tighten the double nuts. Secure the inner side of the U-shaped anchor rings with wooden wedges, firmly pressing the cantilevered platform I-beam main beam into the U-shaped anchor rings. 4. Keeping the tower crane stably suspending the unloading platform, insert component A (shield-shaped steel plate) onto each front U-shaped anchor ring on the N+1 and N+2 floors. With the holes facing the outer frame, components B and C are tightened with double nuts to complete the installation of the conversion supports for the two upper pull points of the inclined steel wire ropes on the N+1 and N+2 layers. The upper ends of the inclined working steel wire ropes (i.e., the outer ropes) on both sides of the platform are then tied to the two conversion supports on the N+2 layer. On the perforated plate, the outer rope must be pulled upwards taut, so that the outer end of the platform is slightly higher than the inner end by 20 to 30 mm, ensuring that the outer rope is truly under tension. Then, the inclined safety wire ropes (i.e., the inner ropes) on both sides of the platform are tied to the two transition supports on the N+1 level. The perforated plate is then tensioned and secured. If the outer rope (working rope) breaks, the inner rope (safety rope) can independently bear the load and stabilize the platform. 5. The tower crane's hoisting ropes can only be removed after both sides of the unloading platform are in place and under load. 6. After fully covering the gap between the innermost I-beam secondary beam of the unloading platform and the outer edge of the building structure with walkway slabs, and completing the surrounding safety netting and guardrails, the acceptance and commissioning of the Nth layer of cantilevered steel unloading platform is organized.

[0031] The process of transferring the Nth-floor steel cantilever unloading platform to the N+1th floor for continued use is as follows: 1. First, clear the stacked objects and debris from the Nth-floor steel cantilever unloading platform and remove the platform walkway panels, etc. Then, after the tower crane hook hooks onto the platform's hoisting wire rope, slightly lift the unloading platform to bear the load, and sequentially remove the upper connecting buckles (including inner and outer ropes) of the two diagonal steel wire ropes on both sides of the unloading platform, as well as the double nuts, steel pressure plates, and steel washers of the front and end U-shaped anchor rings of the platform's cantilever main beam. 2. Remove the two conversion supports installed on the front U-shaped anchor ring of the N+1th floor, and install the above two conversion supports onto the front U-shaped anchor ring of the N+3th floor. 3. After the tower crane hook hooks onto the platform's hoisting wire rope and reaches the vicinity of the external scaffolding on the N+1th floor, temporarily remove the safety netting of the external scaffolding near the platform to be installed. 4. The tower crane continues to assist, guiding the cantilevered I-beam main beam of the platform through the external scaffolding towards the N+1 floor slab, fitting it into and sitting inside the front and rear U-shaped anchor rings on the N+1 floor. Adjust the safe clearance between the unloading platform and the external uprights of the external scaffolding. Insert steel pressure plates and steel washers into the top of the cantilevered I-beam main beam of the platform within the positions of the front and rear U-shaped anchor rings, and tighten the double nuts. Secure the inside of the U-shaped anchor rings with wooden wedges to firmly press the cantilevered platform I-beam main beam into the U-shaped anchor rings. 5. Keep the tower crane firmly suspending the unloading platform. Tie the upper ends of the outer working steel wire ropes (i.e., the outer ropes) on both sides of the platform to the two transition support steel plate holes on the N+3 level. The outer ropes must be pulled upwards taut, so that the outer end of the platform is slightly higher than the inner end by 20 to 30 mm, ensuring that the outer ropes are truly under load. Then, tie the inner safety steel wire ropes (i.e., the inner ropes) on both sides of the platform to the two transition support steel plate holes on the N+2 level and tension them securely. 6. Only after both sets of two diagonal steel wire ropes on each side of the unloading platform are in place and under load can the tower crane's hoisting ropes be removed. 7. After fully covering the gap between the innermost H-beam secondary beam of the unloading platform and the outer edge of the building structure with walkway slabs, and completing the surrounding safety nets and guardrails, organize the acceptance and commissioning of the N+1 level steel cantilever unloading platform.

[0032] By utilizing the U-shaped anchor rings pre-embedded in the upper and second upper layers, which were originally intended solely for the I-beam main beams of the cantilevered unloading platform, and by fitting them with the reusable and convertible supports of this utility model, these U-shaped steel anchor rings can serve as the upper anchor points for the inclined working steel wire ropes and safety steel wire ropes of the cantilevered steel unloading platform, respectively. This allows the U-shaped steel anchor rings to achieve multiple uses in one piece, eliminating the need for pre-embedded special supports. The steel bar anchor ring serves as the anchor point for the inclined steel wire rope of the cantilevered steel unloading platform, ensuring safe early lowering and reducing construction time and costs.

[0033] Any matters not covered in this utility model are common knowledge.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A conversion support for the upper pull point of the inclined steel wire rope of a cantilevered unloading platform, characterized in that: The anchoring device (8) includes a U-shaped pre-embedded anchor ring (9), a shield-shaped steel plate (11), an I-beam (12), a rectangular steel plate (13), and a steel nut (15). The U-shaped pre-embedded anchor ring (9) is pre-embedded in the concrete beam (10). The shield-shaped steel plate (11) passes through the U-shaped pre-embedded anchor ring (9) and is set on the floor (A) and extends out of the floor (A). The I-beam (12) is set at the upper end of the shield-shaped steel plate (11). The rectangular steel plate (13) passes through the U-shaped pre-embedded anchor ring (9) and is pressed on the upper end of the I-beam (12). The steel nut (15) is threaded to the top of the U-shaped pre-embedded anchor ring (9) and tightens the rectangular steel plate (13).

2. The cantilever unloading platform inclined steel wire rope pull-up point conversion support according to claim 1, characterized in that: A steel washer (14) is provided between the steel nut (15) and the rectangular steel plate (13). The rectangular steel plate (13) is welded to the top of the I-beam (12) to form an integral component.

3. The cantilever unloading platform inclined steel wire rope pull-up point conversion support according to claim 1, characterized in that: The shield-shaped steel plate (11) is set as a shield-shaped flat steel plate with three through holes inside. Two of the through holes pass through the U-shaped pre-embedded anchor ring (9), and the other through hole extends out of the floor (A) and is connected to the inclined steel wire rope (5).

4. A cantilever unloading platform device with a conversion support for the upper pull point of the inclined steel wire rope, characterized in that: The structure includes a cantilever main beam (1), a rear U-shaped pre-embedded anchor ring device (2), a front U-shaped pre-embedded anchor ring device (3), an unloading platform (4), a cable tie (5), and an anchoring device (8) as described in any one of claims 1-3. The rear U-shaped pre-embedded anchor ring device (2) and the front U-shaped pre-embedded anchor ring device (3) are installed on the floor (A). One end of the cantilever main beam (1) is fixed to the rear U-shaped pre-embedded anchor ring device (2) and the front U-shaped pre-embedded anchor ring device. (3) On the other end of the cantilever main beam (1) extends out of the floor (A), the unloading platform (4) is set on the corresponding end of the cantilever main beam (1) extending out of the floor (A), one end of the inclined steel wire rope (5) is connected to the corresponding end of the cantilever main beam (1) extending out of the floor (A), the anchoring device (8) is set on the concrete beam (10) of the floor (A) of the higher floor, the other end of the inclined steel wire rope (5) is connected to the anchoring device (8), and the inclined steel wire rope (5) is inclined.

5. The cantilever unloading platform device with a conversion support for the upper pull point of the inclined steel wire rope of the cantilever unloading platform according to claim 4, characterized in that: The inclined steel wire rope (5) is connected to the shield-shaped steel plate (11) through the steel wire rope clamp (6).

6. The cantilever unloading platform device with a conversion support for the upper pull point of the inclined steel wire rope of the cantilever unloading platform according to claim 4, characterized in that: Both the rear U-shaped pre-embedded anchor ring device (2) and the front U-shaped pre-embedded anchor ring device (3) are pre-embedded in the floor (A), and there are two rear U-shaped pre-embedded anchor ring devices (2).

7. The cantilever unloading platform device with a conversion support for the upper pull point of the inclined steel wire rope of the cantilever unloading platform according to claim 4, characterized in that: When the cantilever unloading platform needs to be moved to the next floor, the U-shaped pre-embedded anchor ring (9) on the anchoring device (8) can be used directly as the front-end U-shaped pre-embedded anchor ring device (3).

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