A tower-lifted chimney construction platform

Abstract

This invention proposes a chimney construction platform for tower lifting, comprising a tower, an upper lifting frame, a lower lifting frame, through-hole jacks, climbing rods, upper frame pin hole plates, tower pin hole plates, large square pins, and support wheels. The lower lifting frame and the construction platform structure together form the construction platform. The upper and lower lifting frames are respectively fitted onto the outside of the tower. Large square pins are inserted into the aligned square holes of the upper frame pin hole plates and the tower pin hole plates to connect the construction platform and the upper lifting frame to the tower. Through-hole jacks are fixed on the upper and lower lifting frames, and climbing rods pass through the through-hole jacks to connect the upper lifting frame and the construction platform. After the through-hole jacks are connected to the hydraulic system, the climbing, locking, and releasing of the through-hole jacks of the upper and lower lifting frames are alternately operated, coordinating with the insertion or removal of the large square pins of the upper and lower lifting frames to achieve the alternating lifting of the construction platform by the upper and lower lifting frames. After lifting stops, the large square pins are all inserted into the square holes of the upper frame pin hole plates and the tower pin hole plates, and the construction platform is in working condition.

Description

Technical Field

[0001] A chimney construction platform for tower lifting is disclosed, relating to the field of chimney construction in building engineering, specifically to the construction of the reinforced concrete cylinder of a tall chimney. Background Technology

[0002] Reinforced concrete chimneys are typical tall structures in the construction industry. Their working surfaces gradually rise with the increasing height of the chimney, from the ground foundation to over 100 meters. Common large thermal power plant chimneys reach heights of over 200 meters. The construction platform, serving as the working surface, must be raised accordingly with the increasing height of the chimney. Currently, the main methods for raising the construction platform in the construction field are as follows: The first method uses the newly completed concrete outer circumference of the chimney as a hanging point, leaving holes in the outer circumference to hang climbing frames. Each time a section of the chimney is constructed, the climbing frames are used to raise the construction platform to the corresponding height. The second method pre-embeds climbing rods within the concrete of the chimney to be constructed. Each time a section of the chimney is constructed, jacks are used to lift the platform to a certain height. The third method significantly reduces the area of ​​the construction platform to a walkway, providing only access for personnel from the elevator car to the construction site. The tower of the construction elevator located in the center of the chimney is used to gradually raise this walkway to the height of the working surface as the chimney is constructed.

[0003] Of the traditional methods mentioned above, the first two rely on the strength of the concrete of the tower under construction to support the weight of the construction platform and use it as a fulcrum to lift the platform. The construction progress is constrained by the rate of increase in concrete strength, and the corresponding safety risks are also significant. In the third method, no construction platform is built, which greatly reduces the working area. Although this reduces the constraint of concrete strength, it sacrifices construction efficiency, and the reduction in working area also has a significant impact on safety. Summary of the Invention

[0004] To improve the safety and efficiency of reinforced concrete chimney construction, this invention proposes a tower-lifting chimney construction platform, comprising a tower, an upper lifting frame, a lower lifting frame, through-hole jacks, climbing rods, upper frame pin hole plates, tower frame pin hole plates, large square pins, and support wheels. The lower lifting frame and the construction platform structure together form the construction platform. The upper and lower lifting frames are respectively fitted onto the outside of the tower. Large square pins are inserted into the aligned square holes of the upper frame pin hole plates and the tower frame pin hole plates to connect the construction platform and the upper lifting frame to the tower. Through-hole jacks are fixed on the upper and lower lifting frames, and climbing rods pass through the through-hole jacks to connect the upper lifting frame and the construction platform. The through-hole jacks are connected to a hydraulic system. By alternately operating the climbing, locking, and releasing of the through-hole jacks on the upper and lower lifting frames, and coordinating with inserting or pulling out the large square pins of the upper and lower lifting frames, the construction platform is lifted alternately by the upper and lower lifting frames. After lifting stops, the large square pins are inserted into the square holes of the frame pin hole plate and the tower pin hole plate, and the construction platform is in working condition.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A chimney construction platform for tower lifting includes a tower, an upper lifting frame, and a lower lifting frame. The lower lifting frame and the construction platform structure are combined to form an integral construction platform. A tower pin hole plate is installed on the tower. A through-hole jack, a frame pin hole plate, and a guide wheel are respectively installed on the upper and lower lifting frames. A climbing rod passes through the core hole of the through-hole jack to connect the upper and lower lifting frames. A large square pin is inserted into the square hole aligned with the tower pin hole plate and the frame pin hole plate to connect the upper and lower lifting frames to the tower.

[0006] The tower is composed of tower sections, each a steel rectangular frame structure consisting of uprights, horizontal bars, and diagonal braces. Each tower section has a pin hole plate at its four outer corners at the bottom. The pin hole plate is vertical and forms a 45° angle with the side of the rectangular tower section. Square holes, slightly larger than the size of the large pins, are opened on the pin hole plate. Each tower section is connected from the ground foundation using sectional connectors to form the entire tower structure.

[0007] The upper lifting frame is a rectangular frame welded from a crossbeam 1 and corner posts. Its internal dimensions are larger than the external dimensions of the tower. The four corners of the inner side of the upper lifting frame are connected to a frame pin hole plate. The frame pin hole plate consists of two iron plates with the plane of the iron plates facing vertically and forming a 45° angle with the side of the rectangular frame of the upper lifting frame. It has a square hole with the same size as the square hole of the tower pin hole plate. The gap between the two iron plates of the frame pin hole plate is larger than the thickness of the tower pin hole plate. When the upper lifting frame is fitted onto the tower and moves on the tower, the inner edges of the two iron plates of the frame pin hole plate can pass through the outer edge of the tower pin hole plate without colliding with it. When the tower pin hole plate enters the gap of the frame pin hole plate, the square holes on the tower pin hole plate and the frame pin hole plate are completely aligned, allowing the large square pin to be inserted.

[0008] The upper lifting frame has vertical round holes at its four corners. The diameter of the round holes is larger than the diameter of the core hole of the through-hole jack. The through-hole jack is installed and fixed directly above the round holes, and the core hole of the through-hole jack is concentric with the round holes.

[0009] Eight rollers are fixed on the upper surface of the crossbeam 1 of the upper lifting frame, one near each end of each crossbeam 1. The axis of the roller is aligned with the length of the crossbeam 1. The roller consists of a wheel frame with a rotating axle for fixing it to the crossbeam 1 and a wheel that can rotate on the rotating axle. When the upper and lower lifting frames are fitted onto the tower, the outer surface of the wheel on the roller presses against the outer side of each upright of the tower section to reduce the swaying of the upper lifting frame when it moves on the tower.

[0010] The lower lifting frame is a rectangular frame composed of the crossbeam 2 and the structural components of the construction platform structure, and its internal dimensions are the same as those of the upper lifting frame. The four corners of the inner side of the lower lifting frame are connected to the frame pin hole plates, which are exactly the same in size, direction, and position as the frame pin hole plates of the upper lifting frame, and the size and position of the square holes are also the same. Holes are opened at the four corners of the rectangular frame formed by the lower lifting frame and the construction platform structure, and through-hole jacks are installed. The size and position of the holes and the position of the through-hole jacks are the same as those of the upper lifting frame. The upper surface of the lower lifting frame is equipped with rollers, and their number and position are the same as those of the upper lifting frame.

[0011] The climbing rod is a solid steel rod with a diameter that ensures that the through-hole jack can lock it in place. When the through-hole jack is released, there is a gap between the outer surface of the climbing rod and the core hole of the through-hole jack, allowing the through-hole jack to move along the climbing rod. The length of each climbing rod should be greater than the height of two tower sections and cover three tower pin hole plates.

[0012] The main body of the large square pin is rectangular, with a cross-sectional dimension slightly smaller than that of the square holes on the tower pin hole plate and the frame pin hole plate. The main body length of the large square pin is greater than the distance between the outer surfaces of the two iron plates on the frame pin hole plate of the upper and lower lifting frames. On both sides of the main body length of the large square pin, outside the net length, one end is made into a bevel shape to facilitate the insertion of the large square pin into the square holes on the tower pin hole plate and the frame pin hole plate. The bevel surface has through holes. After the large square pin is inserted into the square hole, a locking pin is inserted into the through hole to prevent the large square pin from sliding out of the square hole. The other end of the main body length has a rectangular section with an outer cross-sectional dimension larger than that of the main body of the large square pin to prevent the large square pin from sliding out of the square hole from the other side after being inserted into the square hole on the tower pin hole plate and the frame pin hole plate.

[0013] Furthermore, the tower pin hole plate can be made of one iron plate or two iron plates, which does not constitute a limitation on the rights of this invention.

[0014] Furthermore, the through-hole jacks are arranged at the corresponding positions of the four corners of the upper and lower lifting frames. Alternatively, the number of through-hole jacks can be increased on the upper and lower lifting frames and around the outer perimeter of the tower, based on the load-bearing capacity calculation. This does not constitute a limitation on the rights of this invention.

[0015] Furthermore, the connection positions of the pin hole plate on the frame with the upper lifting frame and the lower lifting frame can be adjusted in the vertical direction. This does not constitute a limitation on the rights of the present invention, as it facilitates the insertion and removal of the large square pin and the insertion and removal of the anti-reverse pin.

[0016] Furthermore, the tower can utilize the tower body of the construction hoist to install tower pin hole plates, or a special tower can be manufactured to achieve the purpose of this invention. Therefore, the connection form of the tower sections and the form of the section connection pairs do not constitute a limitation on the rights of this invention.

[0017] The beneficial effects of this invention are: The chimney construction platform does not rely on the concrete chimney under construction as a support or as a fulcrum for lifting. This avoids the problem of construction efficiency being affected by the strength of the chimney concrete, and it does not come at the cost of reducing the area of ​​the construction work surface, thus avoiding many safety hazards associated with traditional chimney construction platforms. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings: Figure 1 Implementation overview; Figure 2 Overall schematic diagram; Figure 3 Top view and enlarged details; Figure 4 A schematic diagram of the working status of the upper lifting frame; Figure 5 A schematic diagram of the working state of the lower lift box; Figure 6 Upper lifting frame and component drawings; Figure 7 Lower lifting frame and component drawings; Figure 8 Tower segment diagram.

[0019] Figure 1 — Figure 8 In the middle, there is a chimney body (000), a construction platform structure (001), a tower (002); an upper lifting frame (01), and a lower lifting frame (02).

[0020] Figure 2 — Figure 8 In the middle, there are: through-hole jack (1), climbing pole (2), large square pin (3), frame pin hole plate (4), tower pin hole plate (5), and support wheel (6).

[0021] Figure 4 , Figure 6 In the middle, beam 1 (011), corner post (012), anti-return pin (31).

[0022] Figure 5 , Figure 7 In the middle, crossbeam 2 (021).

[0023] Figure 8 In the middle, the tower is divided into sections (0021) and the section connecting pairs (0022). Detailed Implementation

[0024] The specific implementation of the present invention will be further described below with reference to the accompanying drawings.

[0025] A chimney construction platform for tower lifting includes a tower (002), an upper lifting frame (01), and a lower lifting frame (02). The lower lifting frame (02) and the construction platform structure (001) form a construction platform. A tower pin hole plate (5) is installed on the tower (002). A through-hole jack (1), a frame upper pin hole plate (4), and a support wheel (6) are respectively installed on the upper lifting frame (01) and the lower lifting frame (02). A climbing rod (2) passes through the core hole of the through-hole jack (1) to connect the upper lifting frame (01) and the lower lifting frame (02). A large square pin (3) is inserted into the square hole after the tower pin hole plate (5) and the frame upper pin hole plate (4) are aligned to connect the upper lifting frame (01) and the lower lifting frame (02) to the tower (002) respectively.

[0026] After the through-hole jack (1) is connected to the hydraulic system, the climbing, locking, and releasing of the through-hole jack (1) on the upper lifting frame (01) and the lower lifting frame (02) are alternately controlled. This is coordinated with the insertion and removal of the large square pins (3) of the upper lifting frame (01) and the lower lifting frame (02) to achieve the alternating rise of the upper lifting frame (01) and the lower lifting frame (02) to lift the construction platform. After the lifting stops, the large square pins (3) are inserted into the square holes aligned with the pin hole plates (4) on the frame and the pin hole plates (5) on the tower, and the construction platform is in working condition.

[0027] The tower (002) is composed of tower sections (0021). Each tower section (0021) is a steel rectangular frame structure consisting of uprights, horizontal bars, and diagonal bars. Each tower section (0021) has a tower pin hole plate (5) connected to the outer corner of its lower end. The plane of the tower pin hole plate (5) is vertical and forms a 45° angle with the side of the rectangular tower section (0021). The plane of the tower pin hole plate (5) has a square hole, which is slightly larger than the size of the large square pin (3). Each tower section (0021) is connected one by one from the ground foundation using a section connector (0022) to form the whole tower (002).

[0028] The upper lifting frame (01) is a rectangular frame welded from a crossbeam 1 (011) and a corner post (012). Its internal dimensions are larger than the external dimensions of the tower (002). The four corners of the inner side of the upper lifting frame (01) are connected to frame pin hole plates (4). The frame pin hole plates (4) are composed of two iron plates. The plane of the iron plates is vertical and forms a 45° angle with the side of the rectangular frame of the upper lifting frame (01). Square holes with the same size as the square holes of the tower pin hole plates (5) are opened on it. The two frame pin hole plates (4) are... The gap between the iron plates is greater than the thickness of the tower pin hole plate (5); when the upper lifting frame (01) is fitted onto the tower (002) and moves on the tower (002), the inner edges of the two iron plates of the frame pin hole plate (4) pass through the outside of the tower pin hole plate (5) without colliding with the tower pin hole plate (5), and when the tower pin hole plate (5) enters the gap of the frame pin hole plate (4), the square holes on the tower pin hole plate (5) and the frame pin hole plate (4) are completely aligned, so that the large square pin (3) can be inserted.

[0029] Vertical circular holes are opened at the four corners of the upper lifting frame (01). The diameter of the circular holes is larger than the diameter of the core hole of the through-hole jack (1). The through-hole jack (1) is installed and fixed directly above the circular holes. The core hole of the through-hole jack (1) is concentric with the circular holes.

[0030] Eight rollers (6) are fixed on the upper surface of the crossbeam 1 (011) of the upper lifting frame (01), one roller (6) near each end of each crossbeam 1 (011). The axis of the roller (6) is aligned with the length of the crossbeam 1 (011). The roller (6) consists of a wheel frame with a rotating shaft for fixing it to the crossbeam 1 (011) and a wheel that can rotate on the rotating shaft. The outer surface of the wheel on the roller (6) corresponds to the position of the outer side of each upright of the tower section (0021) when the upper lifting frame (01) is fitted onto the tower (002). The rollers reduce the swaying of the upper lifting frame (01) when it moves on the tower (002).

[0031] The lower lifting frame (02) is a rectangular frame composed of the crossbeam 2 (021) and the structural components of the construction platform structure (001), and its internal dimensions are the same as those of the upper lifting frame (01). The four corners of the inner side of the lower lifting frame (02) are connected with frame pin hole plates (4), which are exactly the same in size, direction and position as the frame pin hole plates (4) of the upper lifting frame (01), and the size and position of the square holes are also the same. Holes are opened at the four corners of the rectangular frame composed of the lower lifting frame (02) and the construction platform structure (001) and through-hole jacks (1) are installed. The size and position of the holes and the position of the through-hole jacks (1) are the same as those of the upper lifting frame (01). The upper surface of the lower lifting frame (02) is equipped with rollers (6), and their number and position are the same as those of the upper lifting frame (01).

[0032] The climbing rod (2) is a solid steel rod with a diameter that ensures that the through-hole jack (1) locks it in place. When the through-hole jack (1) is released, there is a gap between the outer surface of the climbing rod (2) and the core hole of the through-hole jack (1), so that the through-hole jack (1) can move along the climbing rod (2). The length of each climbing rod (2) should be greater than the height of two tower sections (0021) and cover three tower pin hole plates (5).

[0033] The main body of the large square pin (3) is rectangular. The cross-sectional dimensions of the rectangle are slightly smaller than the cross-sectional dimensions of the square holes on the tower pin hole plate (5) and the frame pin hole plate (4). The main body length of the large square pin (3) is greater than the distance between the outer surfaces of the two iron plates of the frame pin hole plate (4) on the upper lifting frame (01) and the lower lifting frame (02). On both sides of the main body length of the large square pin (3), outside the net length, one end is made into a bevel shape so that the large square pin (3) can be easily inserted. Square holes on the tower pin hole plate (5) and the frame pin hole plate (4); through holes are opened on the surface of the inclined surface. After the large square pin (3) is inserted into the square hole, a backstop pin (31) is inserted into the through hole to prevent the large square pin (3) from sliding out of the square hole; at the other end of the main body length, there is a rectangular section with an outer cross-sectional dimension larger than the main body dimension of the large square pin (3) to prevent the large square pin (3) from sliding out from the other side of the square hole after it is inserted into the square hole on the tower pin hole plate (5) and the frame pin hole plate (4).

Claims

1. A chimney construction platform for tower lifting, characterized in that: The construction platform consists of a tower, upper lifting frame, lower lifting frame, through-hole jack, climbing rod, frame pin hole plate, tower pin hole plate, large square pin, and support wheels. The lower lifting frame and the construction platform structure together form the construction platform.

2. The chimney construction platform for tower lifting according to claim 1, characterized in that: The upper and lower lifting frames are respectively fitted onto the outside of the tower. Large square pins are inserted into the square holes of the aligned pin hole plates on the frame and the tower to connect the construction platform and the upper lifting frame to the tower. Through-hole jacks are fixed on the upper and lower lifting frames, and climbing rods pass through the through-hole jacks to connect the upper lifting frame and the construction platform.

3. A chimney construction platform for tower lifting according to claim 1, characterized in that: By alternately controlling the climbing, locking, and releasing of the through-hole jacks of the upper and lower lifting frames, and by inserting or pulling out the large square pins of the upper and lower lifting frames, the construction platform can be raised and lowered alternately.

4. The chimney construction platform for tower lifting according to claim 1, characterized in that: Eight rollers are fixed on the upper and lower lifting frames respectively. When the upper and lower lifting frames are fitted onto the tower, the outer surface of the rollers on the rollers abuts against the outer side of each upright of the tower segment, in order to reduce the swaying of the upper and lower lifting frames when they move on the tower.

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