A method for using a tower crane special elevator

Abstract

This invention discloses a method for using a dedicated tower crane elevator, relating to the field of building construction technology. The method includes a hook, pulley block, elevator pulleys, a frame and lifting assembly, an elevator, a tower crane power cord, a ground winch, elevator moving guide rails, guide rail grooves on the elevator, elevator side doors, standard section entry guide rails, a distribution box, a tower crane foundation, standard sections, counterweights, and an operator's cab. This dedicated tower crane elevator employs a suspended structure. Each standard section of the tower crane has four guide rails inside, allowing the elevator to slide along them and reducing swaying caused by external wind. The elevator's vertical movement is connected to the winch via steel cables and pulleys, and the winch controls the elevator's movement and stopping. The climbing ladder and cage inside each standard section are eliminated, replaced by a suspended elevator. The use of this elevator significantly reduces the labor intensity of tower crane operators or maintenance personnel climbing the tower crane and improves their safety.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a method for using a tower crane-specific elevator. Background Technology

[0002] Tower cranes are essential construction equipment in the construction of high-rise buildings and high-pier bridges. Currently, tower crane operators work from the control room at the top of the tower, with one person directing operations. For tower cranes tens or even hundreds of meters high, the time spent climbing to the control room is long. For building construction projects, construction elevators can be installed on the existing floors before climbing the tower crane. However, for tower cranes on high bridge piers where wall attachments are not possible, construction elevators cannot be installed. Workers and maintenance personnel must then climb the very high tower cranes, which is inefficient and poses installation risks.

[0003] This tower crane-specific elevator is directly installed inside the standard tower crane section, eliminating the need for ladder sections and cages inside the standard tower crane section. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a method for using a dedicated tower crane elevator. This method solves the problems of long climbing times for operators to reach the control room on tower cranes that are tens or even hundreds of meters high. While construction elevators can be installed on existing floors in building construction projects, they cannot be installed on tower cranes with high piers on bridges where wall attachments are not possible. As a result, operators and maintenance personnel have to climb very high tower cranes, which is inefficient and poses installation risks.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: a method for using a special elevator for tower cranes, comprising a hook, pulley block, elevator pulley, frame and lifting assembly, elevator, tower crane power cord, ground winch, elevator moving guide rail, guide rail groove on the elevator, elevator side door panel, standard section entry guide rail, distribution box, tower crane foundation, standard section, counterweight block, and operator's cab;

[0008] The elevator is equipped with a guide rail groove, which includes a guide rail, a clamping rod, a clamping spring, and a clamping semi-circular groove mounted on a standard section.

[0009] The elevator is equipped with an elevator hook and a bottom buffer spring.

[0010] The winch is installed on the tower crane foundation. The two winches on the left and right are the same size, keeping the left and right steel cables vertical. Thus, the steel cables controlled by the two winches rise and fall over the same distance. During the construction of the tower crane foundation, it is necessary to install embedded parts for fixing the position of the winch.

[0011] The winch can rotate clockwise and counterclockwise, and includes a drive gear, two coaxial pulleys, a forward and reverse motor on the drive gear, and a stop brake pad. When the forward button is pressed under the control circuit, the forward motor lifts the elevator, while the reverse motor does not operate. When the stop button is pressed, the stop brake pad immediately moves towards the drive gear and engages with the gear teeth, simultaneously stopping the motor. When the down button is pressed, the reverse motor rotates, and under the control circuit, the brake pad on the drive gear immediately disengages.

[0012] The elevator has a square frame with a base plate but no top plate. The four side doors are 1.2 meters high, allowing workers to step inside. Operation requires a winch that can be turned clockwise and counterclockwise to stop. Workers inside the elevator communicate with the winch operator via walkie-talkie. Once the elevator reaches the desired height, workers must notify the winch operator to stop and simultaneously attach the elevator's fixed hook to the standard section beam. Before descending, the hook must be removed from the standard section beam, and the winch operator must be notified to lower the elevator.

[0013] The winch is fastened to the bolts with nuts. The total length of the winch's steel cable meets the conditions for the tower crane to be lifted to its maximum height. The total length of the left and right steel cables is the same, which is equal to twice the total height of the tower crane after the standard section is added (when the elevator is on the tower crane's base). The total height of the tower crane is the height of the top of the proposed structure plus the height reserved by the tower crane above the top of the structure.

[0014] When adding standard sections to increase the height of the tower crane, the elevator needs to be raised to the highest first section and fixed. Then, the tower crane operator's cab connects to the next first section, and the second section below is the frame and its lifting components. When installing the standard sections, ensure that the distance between the elevator moving guide rails of each standard section is no more than 20cm, and that the length between the top and bottom of the elevator guide rail and the semi-circular groove is greater than 20cm, preferably 50cm.

[0015] Tower crane maintenance personnel also need to regularly check whether the connecting bolts of each standard section are loose, tighten the fixing bolts, and use the elevator. The walkie-talkie notifies the winch operator to control the elevator to stop at different standard sections, and the maintenance personnel hang the elevator hook on the crossbeam of the standard section.

[0016] (III) Beneficial Effects

[0017] This invention provides a method for using a special elevator for tower cranes. It has the following beneficial effects:

[0018] The tower crane elevator uses a suspended structure. Each standard section of the tower crane has four guide rails inside, allowing the elevator to slide along them and reducing the swaying caused by external wind. The elevator's vertical movement is connected to a winch via steel cables and pulleys. The winch controls the elevator's movement and stopping. The climbing ladder and cage inside each standard section are eliminated and replaced by a suspended elevator. The use of this elevator greatly reduces the labor intensity of tower crane operators or maintenance personnel climbing the tower crane and improves their safety. Attached Figure Description

[0019] Figure 1 This is an elevation view of the tower crane of the present invention;

[0020] Figure 2 This is a side view of the elevator structure of the present invention;

[0021] Figure 3 This is a top view of the elevator of the present invention;

[0022] Figure 4 This is a detailed view of the standard section guide rail and the guide rail groove on the elevator side of the present invention.

[0023] In the diagram: 1. Hook; 2. Connector; 3. Elevator pulley; 4. Frame and lifting assembly; 5. Elevator; 5-1. Elevator hook; 5-2. Elevator bottom buffer spring; 6. Power cord; 7. Winch; 7-1. Drive gear; 7-2. Coaxial; 7-3. Forward motor; 7-4. Reverse motor; 7-5. Brake pad; 8. Elevator moving guide rail; 9. Elevator guide rail groove; 9-1. Tensioning rod; 9-2. Tensioning spring; 9-3. Tensioning semi-circular groove; 10. Elevator side door panel; 11. Standard section entry guide rail; 12. Distribution box; 13. Tower crane foundation; 14. Standard section; 15. Counterweight; 16. Operator's cab. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figure 1-4 The present invention provides a technical solution: a method for using a special elevator for tower cranes, comprising a hook 1, a pulley block 2, an elevator pulley 3, a frame and lifting assembly 4, an elevator 5, a tower crane power cord 6, a ground winch 7, an elevator moving guide rail 8, a guide rail groove on the elevator 9, an elevator side door panel 10, a standard section entry guide rail 11, a power distribution box 12, a tower crane foundation 13, a standard section 14, a counterweight block 15, and an operator's cab 16;

[0026] Elevator 5 is equipped with a guide rail groove, which includes a guide rail 8 installed on the standard section, a clamping rod 9-1, a clamping spring 9-2, and a clamping semi-circular groove 9-3;

[0027] Elevator 5 is equipped with elevator hook 5-1 and elevator bottom buffer spring 5-2;

[0028] The winch 7 is installed on the tower crane foundation. The two winches on the left and right are the same size, keeping the left and right steel cables vertical. Thus, the distance the steel cables controlled by the two winches rise and fall is the same. During the construction of the tower crane foundation, it is necessary to install the embedded parts for fixing the position of the winch.

[0029] The winch 7 can rotate clockwise and counterclockwise, and includes a drive gear 7-1, a coaxial two-wheel drive 7-2, a forward motor 7-3 and a reverse motor 7-4 on the drive gear, and a stop brake 7-5. When the forward button is pressed under the control circuit, the forward motor 7-3 lifts the elevator, and the reverse motor 7-4 does not operate. When the stop button is pressed, the stop brake 7-5 immediately moves towards the drive gear and engages with the gear teeth, while the motor immediately stops. When the down button is pressed, the reverse motor rotates, and under the control circuit, the brake 7-5 on the drive gear immediately disengages.

[0030] Elevator 5 uses a square frame with a base plate at the bottom and no plate at the top. The four side doors are 1.2m high, allowing workers to step inside. The elevator requires an operator to operate a winch that can be turned clockwise or counterclockwise to stop. Workers inside the elevator communicate with the winch operator via walkie-talkie. Once the elevator reaches the desired height, workers inside must notify the winch operator to stop the ascent or descent, and simultaneously attach the elevator's fixed hook 5-1 to the standard section's crossbeam. Before descending the elevator, hook 5-1 must be removed from the standard section's crossbeam, and the winch operator must be notified to lower the elevator.

[0031] The winch 7 is fastened to the bolts with nuts. The total length of the winch's steel cable meets the conditions for the tower crane to be lifted to the maximum height. The total length of the left and right steel cables is the same, which is equal to twice the total height of the tower crane after the standard section is added. When the elevator is on the base of the tower crane, the total height of the tower crane is the height of the top of the proposed structure plus the height reserved by the tower crane above the top of the structure.

[0032] When adding standard section 14 to the tower crane to increase its height, the elevator needs to be raised to the highest first section and fixed. Then, the tower crane operator's cab connects to the first section below. The second section below is the frame and its lifting components. When installing the standard sections, ensure that the spacing between the elevator moving guide rails 8 of each standard section is no more than 20cm, and that the length between the top and bottom of the elevator guide rail and the semi-circular groove is greater than 20cm, preferably 50cm.

[0033] Tower crane maintenance personnel also need to regularly check whether the connecting bolts of each standard section are loose, tighten the fixing bolts, and use the elevator. The walkie-talkie notifies the winch operator to control the elevator to stop at different standard sections, and the maintenance personnel hang the elevator hook on the crossbeam of the standard section.

[0034] Appendix Figure 1 This is an elevation view of a tower crane, including hook 1, pulley block 2, elevator pulley 3, frame and lifting assembly 4, elevator 5, elevator hook 5-1, elevator bottom buffer spring 5-2, tower crane power line 6, ground winch 7, elevator moving guide rail 8, distribution box 12, tower crane foundation 13, standard section 14, counterweight block 15, and operator's cab 16.

[0035] Appendix Figure 2 This is a side view of the elevator structure, including elevator pulley 3, elevator hook 5-1, elevator bottom buffer spring 5-2, ground winch 7, elevator moving guide rail 8, elevator guide rail groove 9, and elevator side door panel 10.

[0036] Appendix Figure 3 It is a top view of the elevator, including elevator pulley 3, elevator 5, elevator guide rail 8 on the tower crane standard section, guide rail groove 9 on the elevator, standard section entry guide rail 11, and standard section 14.

[0037] Appendix Figure 4 This is a detailed drawing of the guide rail and the guide rail groove on the elevator side of the standard section, including elevator 5, guide rail 8 set on the standard section, clamping rod 9-1, clamping spring 9-2, and clamping semi-circular groove 9-3.

[0038] This elevator uses steel cables and winches to control its lifting and lowering. Winch 7 is installed on the tower crane foundation. The two winch wheels on the left and right are the same size, keeping the left and right steel cables vertical. This ensures that the steel cables controlled by the two winch wheels travel the same distance when rising and falling, and that the speed is synchronized to prevent the elevator from tilting due to asynchronous lifting and lowering distances of the left and right steel cables. During the construction of the tower crane foundation, it is necessary to install embedded parts to fix the position of the winch.

[0039] Elevator 5 uses a square frame with a base plate at the bottom but no top plate. The four side doors are 1.2m high, allowing workers to step inside. Elevator operation requires an operator to turn the winch clockwise and counterclockwise to stop it. Workers inside the elevator communicate with the winch operator via walkie-talkie. Once the elevator reaches the desired height, workers inside must notify the winch operator to stop the ascent / descent and simultaneously attach the elevator's fixed hook 5-1 to the standard section crossbeam. Before descending the elevator, hook 5-1 must be removed from the standard section crossbeam, and the winch operator must be notified to lower the elevator.

[0040] In summary, the operation of this tower crane elevator utilizes a suspended structure. Each standard section of the tower crane has four guide rails inside, allowing the elevator to slide along them and reducing swaying caused by external wind. The elevator's vertical movement is connected to a winch via steel cables and pulleys, and the winch controls the elevator's movement and stopping. The climbing ladder and cage inside each standard section are eliminated and replaced with a string-mounted elevator. The use of this elevator greatly reduces the labor intensity of tower crane operators or maintenance personnel climbing the tower crane and improves their safety.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method of using a tower crane elevator, comprising a hook (1), a pulley block (2), an elevator pulley (3), a frame and lifting assembly (4), an elevator (5), a tower crane power cord (6), a ground winch (7), an elevator moving guide rail (8), a guide rail groove on the elevator (9), an elevator side door panel (10), a standard section entry guide rail (11), a distribution box (12), a tower crane foundation (13), a standard section (14), a counterweight block (15), and an operator's cab (16). Its features are: The elevator (5) is provided with a guide rail groove, which includes a guide rail (8) set on the standard section, a clamping rod (9-1), a clamping spring (9-2), and a clamping semicircular groove (9-3). The elevator (5) is equipped with an elevator hook (5-1) and an elevator bottom buffer spring (5-2). The winch (7) is installed on the tower crane foundation. The two winches on the left and right are the same size, keeping the left and right steel cables vertical. Thus, the distances of the steel cables controlled by the two winches rising and falling are the same. When constructing the tower crane foundation, it is necessary to install the embedded parts for fixing the position of the winch. The winch (7) can rotate clockwise and counterclockwise, and includes a drive gear (7-1), two coaxial wheels (7-2), a forward motor (7-3) and a reverse motor (7-4) on the drive gear, and a stop brake (7-5). When the forward button is pressed under the action of the control circuit, the forward motor (7-3) lifts the elevator, and the reverse motor (7-4) does not work. When the stop button is pressed, the stop brake (7-5) immediately moves towards the drive gear and engages with the gear groove under the action of the control circuit, and the motor immediately stops. When the down button is pressed, the reverse motor rotates and the brake (7-5) on the drive gear immediately moves away under the action of the control circuit. The elevator (5) adopts a square frame with a bottom plate and no top plate. The four side door panels are 1.2m high, allowing workers to step in. The elevator requires an operating winch that can be turned clockwise and counterclockwise to stop. Workers inside the elevator communicate with the winch operator via walkie-talkie. When the elevator reaches the required height, the workers inside the elevator need to notify the winch operator to stop the elevator. At the same time, the elevator's fixed hook (5-1) is hung on the standard section beam. Before getting off the elevator, the hook (5-1) needs to be removed from the standard section beam and the winch operator needs to be notified to descend the elevator. The winch (7) is fastened to the bolt by using a nut. The total length of the winch’s steel cable meets the conditions for the tower crane to be lifted to the maximum height. The total length of the left and right steel cables is the same. When the elevator is on the base of the tower crane, it is equal to twice the total height of the tower crane after the standard section is added. The total height of the tower crane is the height of the top of the proposed structure plus the height reserved by the tower crane above the top of the structure. When the tower crane adds a standard section (14) to increase its height, it is necessary to raise the elevator to the highest first section and fix it. Then, the tower crane operator's cab connects to the first section below. The second section below is the frame and its lifting components. When installing the standard section, ensure that the distance between the elevator moving guide rails (8) of each standard section is not greater than 20cm, and that the length between the top and bottom of the elevator guide rails is greater than 20cm. Tower crane maintenance personnel also need to regularly check whether the connecting screws of each standard section (14) are loose, tighten the fixing screws, and use the elevator. The walkie-talkie notifies the winch operator to control the elevator to stop at different standard sections. The maintenance personnel hang the elevator hook on the crossbeam of the standard section.

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