A method for converting a heavy bleacher which can be moved horizontally repeatedly

Abstract

The present application relates to the construction technical field of steel structure, specifically to a conversion method of heavy grandstand capable of repeated horizontal movement; comprising liftable supporting legs (1), horizontal limiting bolts (2), steel wheel trolleys (3), horizontal limiting bolts (3) of trolleys, multi-wheel type auxiliary tray trolleys (5), the heavy grandstand can move horizontally forward and backward through the steel wheel trolleys (3) and the multi-wheel type auxiliary tray trolleys (5), and is moved to a specified position to reach a use state. The method proposed in the present application can save movable sites and improve the utilization rate of sports venues, and the heavy grandstand can be converted among multiple movement modes through horizontal movement forward and backward, such as mutual conversion between the track and field mode and the football mode, so that the sports venue realizes multifunctionalization.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology, specifically a method for converting a heavy-duty grandstand that can be repeatedly moved horizontally. Background Technology

[0002] To meet the requirements of economy, comprehensiveness, and multi-functionality of large venues, specialized stadiums are beginning to develop into multi-functional complexes. Internationally, there are two examples of large, convertible heavy-duty grandstands: the Singapore National Stadium, completed in 2014, uses a deep pit flexible column lifting platform with segmented jacking, an air cushion system, and partial hydraulic horizontal movement to achieve the conversion between two modes; and the Stade de France, built for the 1998 FIFA World Cup, uses a deep pit with hydraulic cylinders for segmented jacking, track slabs, air cushions, and a hydraulic system for horizontal movement.

[0003] However, the aforementioned convertible heavy-duty grandstands all suffer from complex structures and high maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned defects and propose a method for converting heavy-duty grandstands that can be repeatedly moved horizontally.

[0005] To achieve the above objectives, the present invention is implemented as follows:

[0006] A method for converting a heavy-duty grandstand that can be repeatedly moved horizontally includes liftable outriggers (1), horizontal limiting pins (2), steel wheel trolleys (3), trolley horizontal limiting devices (3), and multi-wheeled auxiliary pallet trucks (5), wherein...

[0007] Step 1: In a certain mode of use, the steel wheel trolley (3) and the liftable outrigger (1) jointly support the heavy grandstand, the horizontal limit pin (20) and the trolley horizontal limit frame (4) jointly constrain the horizontal displacement of the heavy grandstand, and the horizontal limit pin (2) and the trolley horizontal limit frame (4) are detachably connected to the heavy grandstand and the ground.

[0008] Step 2: When it is necessary to switch to another mode, remove the horizontal limit pin (2) and the trolley horizontal limit bracket (4).

[0009] Step 3: Select a suitable lifting position at the front end. Use hydraulic cylinders to lift the entire heavy-duty grandstand at the common point of the front lifting point and the rear trolley lifting point. The lifting must be synchronous, and the lifting amount at one time should preferably be less than 20mm to ensure the stability of the structure during the lifting. In the lifting state, use structural calculation software to calculate the strength and stiffness of the structure to meet the requirements. The members near the lifting point may need to be reinforced.

[0010] Step 4: After the jacking is in place, retract the liftable outriggers (1) and insert the multi-wheeled auxiliary pallet truck (5) at the front end. The pallet truck is a simple support structure at both ends. The front support point of the heavy grandstand will tilt up. In order to ensure that the force of the heavy grandstand can be evenly transmitted to the multi-wheeled auxiliary pallet truck (5), the front support point needs to be padded with steel plates to compensate for the tilting displacement. The amount of tilting displacement can be calculated by structural calculation software.

[0011] Step 5: The steel wheel trolley (3) and the multi-wheeled auxiliary pallet trolley (5) together carry the heavy grandstand and move horizontally. The steel wheel trolley (3) needs to be laid with a track to meet the needs of the steel wheel trolley. The multi-wheeled auxiliary pallet trolley (5) walks on the stadium track. It is necessary to calculate that its pressure on the track must be less than the track's compressive bearing capacity. If the requirement cannot be met, steel plates need to be placed to increase the pressure area and reduce the pressure.

[0012] Step 6: Walk to the preset position, remove the multi-wheeled auxiliary pallet truck (5), lower the liftable outriggers (1), install the horizontal limit pin (2) and the trolley horizontal limit frame (4), and achieve the conversion from one mode to another.

[0013] Step 7: When switching to other modes, repeat steps 1 to 6 above.

[0014] In the conversion method shown in this invention, when the heavy-duty grandstand is fully occupied, the steel-wheeled trolley 3 and the liftable outriggers 1 can only provide vertical force. Therefore, a horizontal limiting pin 2 and a trolley horizontal limiting frame 4 are needed to meet the vibration comfort requirements of the heavy-duty grandstand. The horizontal limiting pin 2 and the trolley horizontal limiting frame 4 are detachably connected to both the heavy-duty grandstand and the ground, allowing for easy disassembly during conversion and ensuring that the grandstand's forward / backward movement is not obstructed.

[0015] Because the steel-wheeled trolley 3 and the multi-wheeled auxiliary pallet truck have different heights, the arrangement height of the movable grandstand at the contact points of the trolley and the pallet truck needs to be adjusted to match the mechanical equipment in order to ensure horizontal movement during conversion. In the converted state, with only the steel-wheeled trolley 3 and the auxiliary multi-wheeled pallet truck 5, the structural span increases significantly. Structural calculation software (such as Yingjianke, SAP2000, Midas Gen, etc.) was used to calculate the stiffness and strength of the grandstand to meet the specifications.

[0016] The beneficial effects of this invention are that the heavy-duty grandstand can be moved horizontally back and forth to a designated position for use by using a steel-wheeled trolley and a multi-wheeled auxiliary pallet trolley. In use, the heavy-duty grandstand is supported by the steel-wheeled trolley and liftable outriggers. Due to the large number of spectators, the heavy-duty grandstand has high requirements for vibration comfort; therefore, a horizontal limiting frame needs to be added at the trolley position, and a horizontal limiting pin needs to be added at a suitable position at the front end to meet the requirements for structural stability under dynamic loads, as well as the grandstand's vibration comfort and vibration control. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the heavy-duty grandstand of the present invention in use.

[0018] Figure 2 This is a schematic diagram illustrating the combined operation of the heavy-duty grandstand conversion mode of the present invention – a steel wheel trolley and a multi-wheeled auxiliary pallet trolley.

[0019] Figure 3 This is a schematic diagram of the steel wheel trolley and trolley horizontal limit frame of the present invention.

[0020] Figure 4 This is a schematic diagram of the multi-wheeled auxiliary pallet truck of the present invention. Detailed Implementation

[0021] The present invention will be further illustrated below through specific embodiments.

[0022] like Figures 1-4 As shown, a method for converting a heavy-duty grandstand that can be repeatedly moved horizontally includes liftable outriggers (1), horizontal limiting pins (2), steel wheel trolleys (3), trolley horizontal limiting devices (3), and multi-wheeled auxiliary pallet trucks (5), wherein,

[0023] Step 1: In a certain mode of use, the steel wheel trolley (3) and the liftable outrigger (1) jointly support the heavy grandstand, the horizontal limit pin (20) and the trolley horizontal limit frame (4) jointly constrain the horizontal displacement of the heavy grandstand, and the horizontal limit pin (2) and the trolley horizontal limit frame (4) are detachably connected to the heavy grandstand and the ground.

[0024] Step 2: When it is necessary to switch to another mode, remove the horizontal limit pin (2) and the trolley horizontal limit bracket (4).

[0025] Step 3: Select a suitable lifting position at the front end. Use hydraulic cylinders to lift the entire heavy-duty grandstand at the common point of the front lifting point and the rear trolley lifting point. The lifting must be synchronous, and the lifting amount at one time should preferably be less than 20mm to ensure the stability of the structure during the lifting. In the lifting state, use structural calculation software to calculate the strength and stiffness of the structure to meet the requirements. The members near the lifting point may need to be reinforced.

[0026] Step 4: After the jacking is in place, retract the liftable outriggers (1) and insert the multi-wheeled auxiliary pallet truck (5) at the front end. The pallet truck is a simple support structure at both ends. The front support point of the heavy grandstand will tilt up. In order to ensure that the force of the heavy grandstand can be evenly transmitted to the multi-wheeled auxiliary pallet truck (5), the front support point needs to be padded with steel plates to compensate for the tilting displacement. The amount of tilting displacement can be calculated by structural calculation software.

[0027] Step 5: The steel wheel trolley (3) and the multi-wheeled auxiliary pallet trolley (5) together carry the heavy grandstand and move horizontally. The steel wheel trolley (3) needs to be laid with a track to meet the needs of the steel wheel trolley. The multi-wheeled auxiliary pallet trolley (5) walks on the stadium track. It is necessary to calculate that its pressure on the track must be less than the track's compressive bearing capacity. If the requirement cannot be met, steel plates need to be placed to increase the pressure area and reduce the pressure.

[0028] Step 6: Walk to the preset position, remove the multi-wheeled auxiliary pallet truck (5), lower the liftable outriggers (1), install the horizontal limit pin (2) and the trolley horizontal limit frame (4), and achieve the conversion from one mode to another.

[0029] Step 7: When switching to other modes, repeat steps 1 to 6 above.

[0030] In the conversion method shown in this invention, when the heavy-duty grandstand is fully occupied, the steel-wheeled trolley 3 and the liftable outriggers 1 can only provide vertical force. Therefore, a horizontal limiting pin 2 and a trolley horizontal limiting frame 4 are needed to meet the vibration comfort requirements of the heavy-duty grandstand. The horizontal limiting pin 2 and the trolley horizontal limiting frame 4 are detachably connected to both the heavy-duty grandstand and the ground, allowing for easy disassembly during conversion and ensuring that the grandstand's forward / backward movement is not obstructed.

[0031] Because the steel-wheeled trolley 3 and the multi-wheeled auxiliary pallet truck have different heights, the arrangement height of the movable grandstand at the contact points of the trolley and the pallet truck needs to be adjusted to match the mechanical equipment in order to ensure horizontal movement during conversion. In the converted state, with only the steel-wheeled trolley 3 and the auxiliary multi-wheeled pallet truck 5, the structural span increases significantly. Structural calculation software (such as Yingjianke, SAP2000, Midas Gen, etc.) was used to calculate the stiffness and strength of the grandstand to meet the specifications.

Claims

1. A method for converting a heavy-duty grandstand that can be repeatedly moved horizontally, characterized by: Includes liftable outriggers (1), horizontal limit pins (2), steel wheel trolleys (3), trolley horizontal limit frames (4), and multi-wheeled auxiliary pallet carts (5), among which, Step 1: In a certain mode of use, the steel wheel trolley (3) and the liftable outrigger (1) jointly support the heavy grandstand, the horizontal limit pin (2) and the trolley horizontal limit frame (4) jointly constrain the horizontal displacement of the heavy grandstand, and the horizontal limit pin (2) and the trolley horizontal limit frame (4) are detachably connected to the heavy grandstand and the ground. Step 2: When it is necessary to switch to another mode, remove the horizontal limit pin (2) and the trolley horizontal limit bracket (4). Step 3: Select a suitable lifting position at the front end. Use hydraulic cylinders to lift the entire heavy-duty grandstand together at the front lifting point and the rear trolley lifting point. The lifting must be synchronous, and the lifting amount at one time should be less than 20mm to ensure the stability of the structure during the lifting. In the lifting state, use structural calculation software to calculate the strength and stiffness of the structure to meet the requirements. The members near the lifting point may need to be reinforced. Step 4: After the jacking is in place, retract the liftable outriggers (1) and insert the multi-wheeled auxiliary pallet truck (5) at the front end. The pallet truck is a simple support structure at both ends. The front support point of the heavy grandstand will tilt up. In order to ensure that the force of the heavy grandstand can be evenly transmitted to the multi-wheeled auxiliary pallet truck (5), the front support point needs to be padded with steel plates to compensate for the tilting displacement. The amount of tilting displacement can be calculated by structural calculation software. Step 5: The steel wheel trolley (3) and the multi-wheeled auxiliary pallet trolley (5) together carry the heavy grandstand and move horizontally. The steel wheel trolley (3) needs to be laid with a track to meet the needs of the steel wheel trolley. The multi-wheeled auxiliary pallet trolley (5) walks on the stadium track. It is necessary to calculate that its pressure on the track must be less than the track's compressive bearing capacity. If the requirement cannot be met, steel plates need to be placed to increase the pressure area and reduce the pressure. Step 6: Walk to the preset position, remove the multi-wheeled auxiliary pallet truck (5), lower the liftable outriggers (1), install the horizontal limit pin (2) and the trolley horizontal limit frame (4), and achieve the conversion from one mode to another. Step 7: When switching to other modes, repeat steps 1 to 6 above.

Images