Chimney fall arrest formwork platform device

Abstract

This invention relates to the field of protective device technology, specifically to a chimney fall-prevention climbing formwork platform device. It includes a supporting cylindrical rod vertically embedded in a concrete foundation. A horizontal platform is mounted on the supporting cylindrical rod via a through-hole jack, moving vertically upwards and downwards. The device also includes a fall-prevention component, comprising an active clamping assembly fixedly installed at the bottom of the horizontal platform and fitted onto the supporting cylindrical rod, and at least one electrically operated clamp installed below the active clamping assembly for clamping the supporting cylindrical rod. This device features a mechanical active clamping assembly, capable of instantly clamping the supporting cylindrical rod using its own weight. This solves the safety defect of existing chimney climbing formwork platforms that rely solely on hydraulic mechanisms for support and lack an independent mechanical fall-prevention structure, significantly improving the fall-prevention reliability throughout the climbing and hovering process. This invention employs a dual fall-prevention structure combining mechanical braking and secondary locking via an electrically operated clamp, coupled with a circuit breaker-linked alarm, providing rapid response, secure locking, and all-weather safety protection.

Description

Technical Field

[0001] This invention relates to the field of protective device technology, specifically to a chimney fall prevention climbing platform device. Background Technology

[0002] In concrete chimney construction, hydraulic climbing formwork platforms have become the mainstream construction equipment. Most existing hydraulic climbing formwork platforms for chimneys use ball bearing through-hole jacks as the core lifting components. The central through-hole of the jack is directly fitted onto the vertical support rod, and the lower end of the support rod is embedded in the already poured concrete cylinder wall. The jack is driven to climb along the support rod by the hydraulic control console, which drives the entire platform to rise and complete continuous construction.

[0003] This structure relies solely on a single climbing support—a through-hole jack and a round rod—to suspend and fix the platform, lacking any mechanical fall protection structure independent of the hydraulic system. In practical use, if the hydraulic system loses pressure, oil pipes burst, or the jack clamping mechanism fails, the climbing formwork platform will instantly lose support and is highly susceptible to a complete fall. Therefore, most current systems use multiple through-hole jacks circumferentially or rely on temporary guy ropes or hand-operated hoists to improve reliability. However, these systems cannot provide reliable fall protection, especially during the climbing process, and fail to meet the safety requirements for high chimney construction. Therefore, to further improve the fall protection performance of the climbing formwork platform, we propose a chimney fall protection climbing formwork platform device. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings mentioned in the background section and provide a chimney anti-fall climbing formwork platform device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A chimney fall prevention climbing formwork platform device includes a supporting round rod vertically embedded in a concrete foundation, on which a horizontal platform is installed in a vertical direction via a through-hole jack, and further includes: The fall arrestor includes an active clamping assembly fixedly installed at the bottom of the horizontal platform and fitted onto the support rod, and at least one electric clamp installed below the active clamping assembly for clamping the support rod. When a fall occurs, the active clamping assembly clamps the supporting rod based on the pressure of the device's gravity to prevent it from falling.

[0006] Preferably, the active clamping assembly includes a sleeve cylinder whose inner cavity fits the bearing rod, and an outer ring cylinder fixedly installed outside the sleeve cylinder; At least two evenly distributed clamping cavities are provided between the sleeve and the outer annulus, and the sleeve is provided with an open groove that is connected to the clamping cavity.

[0007] Preferably, guide grooves are vertically provided on the cavity walls on both sides of the clamping cavity, and the upper end of the guide groove is an arc-shaped groove that gradually turns outward from bottom to top.

[0008] Preferably, a roller with its surface in contact with the bearing rod is rotatably mounted at the clamping cavity and the open groove; A guide shaft is horizontally provided at the center of the crawler wheel for sliding insertion into the guide groove.

[0009] Preferably, a brake pressure plate is provided inside the clamping cavity and above the climbing wheel, with the bottom end of the brake pressure plate located on the inner end side of the climbing wheel; When the climbing wheel slides upward along the guide groove during its downward movement, the climbing wheel presses the brake plate inward to tighten the bearing rod, thus achieving braking and preventing fall.

[0010] Preferably, at least two climbing wheels are provided, and at least one climbing wheel is located at the bottom in the vertical groove section of the guide groove, for keeping it in contact with the bearing rod and pressing upward.

[0011] Preferably, a blocking plate is installed near the outer wall of the clamping cavity, and the blocking plate is used to press the crawling wheel between the blocking plate and the braking plate under the action of gravity.

[0012] Preferably, a circuit breaker corresponding to the position of the brake pressure plate is installed near the inner wall of the clamping cavity. When the brake pressure plate is pressed inward, it contacts the circuit breaker to achieve circuit breaking and closure.

[0013] Preferably, the circuit breaker is electrically connected to the electric clamp and is also electrically connected to a buzzer; The electric clamp is equipped with clamping claws for gripping the clamp.

[0014] Preferably, bearings are coaxially mounted at both ends of the guide shaft to reduce sliding friction with the guide groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The chimney anti-fall climbing platform device is equipped with a mechanical active clamping component, which can instantly clamp the supporting round rod by its own weight in the event of sudden failure of the through-hole jack. This solves the safety defect of the existing chimney climbing platform that only relies on the hydraulic mechanism for support and has no independent mechanical anti-fall structure, and greatly improves the anti-fall reliability of the entire climbing and hovering process. 2. This invention adopts a dual anti-fall structure that combines mechanical braking with electric clamp secondary locking. With the linkage alarm of circuit breaker, it responds quickly and locks firmly, providing all-time safety protection. It effectively makes up for the shortcomings of traditional multi-jack and guy rope auxiliary schemes that cannot reliably prevent falls during the climbing stage, and is suitable for high-altitude construction safety requirements. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the installation of the overall device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the fall protection device of the present invention; Figure 3 This is a front view of the overall structure of the fall protection device of the present invention; Figure 4 This is an exploded view of the overall structure of the fall protection device of the present invention; Figure 5 This is a schematic diagram of the active clamping assembly of the fall protection part of the present invention; Figure 6 This is a cross-sectional view of the active clamping component of the fall protection part of the present invention; Figure 7 This is a cross-sectional schematic diagram of the active clamping component of the fall protection part of the present invention; Figure 8 This is a schematic cross-sectional view of the sleeve and outer ring of the present invention. The meanings of the labels in the diagram are as follows: 1. Derrick; 2. Horizontal platform; 3. Concrete foundation; 4. Standard steel formwork; 5. Supporting round rod; 6. Through-hole jack; 7. Protective fence; 8. Safety net; 9. Fall arrestor; 91. Sleeve sleeve; 911. Convex edge plate; 912. Open slot; 92. Outer ring cylinder; 901. Clamping cavity; 921. Guide groove; 93. Brake pressure plate; 94. Blocking plate; 95. Climbing wheel; 951. Guide shaft; 96. Side wing plate; 97. Electric clamp; 971. Clamping claw; 98. Circuit breaker. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. 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.

[0018] like Figures 1 to 8As shown, this embodiment discloses a fall-prevention climbing formwork platform device, which is adapted to the hydraulic climbing formwork construction conditions of cast-in-place reinforced concrete chimneys. The device includes a support rod 5 vertically embedded in the concrete foundation 3. In this embodiment, the support rod 5 is made of Φ48×3.25mm welded steel pipe, with the lower end embedded in the cast-in-place concrete foundation 3 and the upper end extending along the height direction of the chimney.

[0019] A horizontal platform 2 is vertically mounted on the supporting round rod 5 via a through-hole jack 6. The through-hole jack 6 is a GYD-60 type ball bearing hydraulic jack, driven by a YKT-36 type hydraulic control console. The control console has a rated working pressure of 8MPa, a single stroke of the jack is ≥20mm, and the climbing speed is about 30mm / min. The horizontal platform 2 uses double-span 14# channel steel as the main beam, and the upper part is fully covered with scaffold boards to form a construction operation surface. Protective fences 7 and safety nets 8 are set around the platform. A derrick 1 is installed in the center for vertical material transportation, and a fixed steel formwork 4 is installed on the outside for subsequent climbing and pouring of new concrete foundation 3.

[0020] This device creatively adds a fall protection unit 9 to the hydraulic climbing formwork platform. The fall protection unit 9 includes an active clamping component fixedly installed at the bottom of the horizontal platform 2 and fitted on the support rod 5, and two electric clamps 97 installed below the active clamping component for clamping the support rod 5. When a fall occurs due to hydraulic system depressurization, oil pipe rupture, or failure of the jack clamping mechanism, the active clamping component can automatically clamp the support rod 5 based on the pressure of the device's own weight, achieving immediate fall protection braking and preventing the horizontal platform 2 from falling as a whole.

[0021] Specifically, the active clamping assembly includes a sleeve cylinder 91 whose inner cavity fits against the outer wall of the supporting round rod 5, and an outer ring cylinder 92 fixedly installed outside the sleeve cylinder 91. The top of the sleeve cylinder 91 is provided with a raised edge plate 911, which is fixedly connected to the bottom of the horizontal platform 2, so that the active clamping assembly can rise and fall synchronously with the horizontal platform 2. In this embodiment, four clamping cavities 901 are evenly arranged circumferentially between the sleeve cylinder 91 and the outer ring cylinder 92. The sleeve cylinder 91 is provided with an open groove 912 that corresponds to and communicates with the clamping cavities 901, providing movement space for the internal moving components. Guide grooves 921 are vertically arranged on the cavity walls on both sides of the clamping cavities 901. The upper end of the guide groove 921 is an arc-shaped groove that gradually turns outward from bottom to top, and the lower end is a vertical groove. The arc-shaped groove section and the vertical groove section are smoothly transitioned, providing a stable guide trajectory for the climbing wheel 95.

[0022] A climbing wheel 95 is rotatably installed at the clamping cavity 901 and the open groove 912. The roller surface of the climbing wheel 95 is in contact with the surface of the supporting round rod 5. A guide shaft 951 is horizontally arranged at the center of the climbing wheel 95. The guide shaft 951 is slidably inserted into the guide groove 921. Bearings are installed coaxially at both ends of the guide shaft 951 to reduce sliding friction with the guide groove 921, ensuring smooth climbing and sensitive braking response.

[0023] like Figure 7 As shown, a brake pressure plate 93 is provided in the clamping cavity 901 and above the climbing wheel 95. The bottom end of the brake pressure plate 93 is located on the inner end side of the climbing wheel 95. When the horizontal platform 2 has an unexpected downward tendency, the climbing wheel 95 will slide upward along the guide groove 921 under the friction action of the rod wall. The climbing wheel 95 will press the brake pressure plate 93 inward to press the supporting round rod 5, and achieve instantaneous braking and anti-fall by relying on frictional resistance.

[0024] To ensure stable and reliable braking action, at least two rollers 95 are provided, and at least one lower roller 95 is always positioned in the vertical section of the guide groove 921, maintaining contact with the supporting round rod 5 and continuously providing upward compressive force. This embodiment includes the following... Figure 7 The two climbing wheels shown are 95.

[0025] A blocking plate 94 is installed near the outer wall of the clamping cavity 901. Under the action of gravity, the blocking plate 94 presses the crawling wheel 95 between the blocking plate 94 and the brake pressure plate 93, limiting the offset of the crawling wheel 95 and concentrating the squeezing force of the crawling wheel 95 onto the brake pressure plate 93, thereby improving the stability and reliability of the brake clamping. A circuit breaker 98 corresponding to the position of the brake pressure plate 93 is installed near the inner wall of the clamping cavity 901. When the brake pressure plate 93 is pressed inward by the crawling wheel 95, a circuit breaker 98 is installed. When moving, the brake pressure plate 93 contacts the circuit breaker 98 and turns on the circuit. The circuit breaker 98 is electrically connected to the electric clamp 97 and also electrically connected to a buzzer. The electric clamp 97 is equipped with clamping claws 971 for clamping the supporting round rod 5. When the circuit breaker 98 is triggered, the electric clamp 97 immediately drives the clamping claws 971 to clamp the supporting round rod 5, forming a secondary anti-fall lock. At the same time, the buzzer is powered on to sound an alarm, which promptly reminds the on-site workers to deal with any abnormal situation in time.

[0026] In this embodiment, multiple supporting round rods 5 are evenly arranged along the circumference of the chimney. Each supporting round rod 5 is equipped with a set of fall arrestor 9 and a through-hole jack 6. All fall arrestor 9 can be triggered synchronously to ensure that the horizontal platform 2 is subjected to uniform force and the fall protection is effective simultaneously. The outer ring cylinder 92 is also provided with a side wing plate 96 to enhance the overall structural strength of the active clamping assembly and adapt to high-altitude heavy-load construction conditions.

[0027] When the device is working normally, the through-hole jack 6 climbs along the support rod 5 under the drive of the hydraulic system, driving the horizontal platform 2 to rise at a constant speed. At this time, the climbing wheel 95 rolls along the vertical section of the guide groove 921, maintaining a gap with the brake pressure plate 93, and the electric clamp 97 is in the loose state, so the device can smoothly complete the climbing action. When the horizontal platform 2 is suspended, the through-hole jack 6 is locked, and the climbing wheel 95 continues to adhere to the support rod.

[0028] In the event of an unexpected, momentary downward movement due to jack failure, hydraulic system malfunction, or other unforeseen circumstances, the horizontal platform 2 will cause the active clamping assembly to partially sag. Under the combined action of friction and gravity, the climbing wheel 95 will slide upwards along the guide groove 921, pressing the brake plate 93 inwards to tighten the supporting rod 5, achieving primary mechanical anti-fall braking. Simultaneously, the brake plate 93 triggers the circuit breaker 98, causing the electric clamp 97 to quickly clamp the supporting rod 5, completing secondary anti-fall locking. The active clamping assembly forms a passive protection structure, which, in conjunction with the electric clamp 97 for auxiliary locking, enhances the platform's operational stability. A buzzer will simultaneously sound an alarm. This dual independent anti-fall structure completely prevents the platform from falling, meeting the safety requirements for high chimney construction.

[0029] In this embodiment, all structural components are made of Q235 carbon structural steel with anti-corrosion and anti-rust treatment on the surface. They can adapt to the high temperature, dusty and corrosive working environment of the chimney construction site. The fall arrestor 9 adopts a pure mechanical trigger structure, which does not rely on the electric and hydraulic system for drive. It has a fast response speed and high working reliability. It is completely independent of the original climbing system and can be widely used in hydraulic climbing formwork construction scenarios of various cast-in-place concrete chimneys.

[0030] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A chimney anti-fall climbing formwork platform device, comprising a supporting round rod (5) vertically embedded in a concrete foundation (3), wherein a horizontal platform (2) is installed on the supporting round rod (5) by means of a through-hole jack (6) in a vertical direction, characterized in that: Also includes: The fall arrestor (9) includes an active clamping assembly fixedly installed at the bottom of the horizontal platform (2) and fitted on the support rod (5), and at least one electric clamp (97) installed below the active clamping assembly for clamping the support rod (5). When a fall occurs, the active clamping assembly clamps the bearing rod (5) based on the pressure of the device's gravity to prevent it from falling.

2. The chimney fall prevention climbing platform device as described in claim 1, characterized in that: The active clamping assembly includes a sleeve (91) whose inner cavity fits the bearing rod (5), and an outer ring (92) fixedly installed on the outside of the sleeve (91). At least two evenly distributed clamping cavities (901) are provided between the sleeve cylinder (91) and the outer ring cylinder (92), and the sleeve cylinder (91) is provided with an open groove (912) that is connected to the clamping cavity (901).

3. The chimney fall prevention climbing platform device as described in claim 2, characterized in that: The clamping cavity (901) has vertically arranged guide grooves (921) on both sides of the cavity wall. The upper end of the guide groove (921) is an arc-shaped groove that gradually flips outward from bottom to top.

4. The chimney fall prevention climbing platform device as described in claim 3, characterized in that: A roller (95) with its roller surface in contact with the bearing rod (5) is rotatably installed at the clamping cavity (901) and the open groove (912). The guide shaft (951) is horizontally arranged at the center of the axle of the climbing wheel (95) for sliding insertion into the guide groove (921).

5. The chimney fall prevention climbing platform device as described in claim 4, characterized in that: A brake pressure plate (93) is provided inside the clamping cavity (901) and above the climbing wheel (95), with the bottom end of the brake pressure plate (93) located on the inner end side of the climbing wheel (95); When the climbing wheel (95) slides upward along the guide groove (921) during the moment of falling, the climbing wheel (95) presses the brake plate (93) inward to tighten the bearing rod (5) to achieve braking and prevent falling.

6. The chimney fall prevention climbing platform device as described in claim 5, characterized in that: At least two of the climbing wheels (95) are provided, and at least one of them is located at the bottom. The climbing wheel (95) is located in the vertical groove section of the guide groove (921) to keep it in contact with the bearing rod (5) and press it upward.

7. The chimney fall prevention climbing platform device as described in claim 6, characterized in that: A blocking plate (94) is installed near the outer wall of the clamping cavity (901). The blocking plate (94) is used to press the climbing wheel (95) between the blocking plate (94) and the brake pressure plate (93) under the action of gravity.

8. The chimney fall prevention climbing platform device as described in claim 5, characterized in that: A circuit breaker (98) corresponding to the position of the brake pressure plate (93) is installed near the inner wall of the clamping cavity (901). When the brake pressure plate (93) is pressed inward, it contacts the circuit breaker (98) to achieve circuit breaker closure.

9. The chimney fall prevention climbing platform device as described in claim 8, characterized in that: The circuit breaker (98) is electrically connected to the electric clamp (97) and is also electrically connected to a buzzer; The electric clamp (97) is provided with clamping claws (971).

10. The chimney fall prevention climbing platform device as described in claim 4, characterized in that: The guide shaft (951) has bearings coaxially mounted at both ends to reduce sliding friction with the guide groove (921).

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