Construction elevator turning plate opening and closing linkage device based on pulleys

Abstract

The utility model discloses a construction elevator turning plate opening and closing linkage device based on a pulley. The construction elevator turning plate opening and closing linkage device comprises an elevator sliding door, a fixed pulley, a steel cable and a turning plate. The elevator sliding door is an up-down split sliding door and comprises an upper sliding door body and a lower sliding door body, the two fixed pulleys are installed on the outer walls of the two sides of the lift car at the same height, the turning plate is rotationally connected with the side walls of the lift car through a rotating shaft, and the ends of the two ends of the rotating shaft extend out of the side walls of the lift car and are fixedly connected with the S-shaped crank arms. The other end is connected with the S-shaped crank arm after bypassing the fixed pulley; the upper sliding door and the lower sliding door are opened synchronously, the S-shaped crank arm is pulled through the steel cable while the lower sliding door moves downwards, and then the turning plate is driven to turn outwards. The device is simple in structure and convenient to use, synchronous linkage between the elevator sliding door and the turning plate can be effectively achieved, manual operation is reduced, waiting time is shortened, safety accident risks caused by misoperation or negligence can be avoided, and construction efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a pulley-based construction elevator flap opening and closing linkage device. Background Art

[0002] With the continuous development of urban construction, the number of high-rise and super-high-rise buildings is increasing. As a crucial means of transportation in these construction projects, the performance and safety of construction elevators have attracted widespread attention. To improve the transportation efficiency of construction elevators while ensuring the safety of construction workers, the design and application of flap opening and closing linkage mechanisms are particularly important. The flap mechanism ensures a smooth docking between the elevator car and the floor platform, facilitating the safe entry and exit of construction workers and materials. The flap opening and closing linkage function of a construction elevator, which automatically opens when the elevator car reaches a designated floor and closes when the elevator car reaches a designated floor, significantly improves the elevator's operating efficiency. The performance of the flap opening and closing linkage mechanism directly impacts the overall performance of the elevator, improving its efficiency and saving time. Therefore, researching and improving the flap opening and closing linkage mechanism is of great significance for enhancing the overall performance of construction elevators. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a pulley-based construction elevator flap opening and closing linkage device, so that the flap can be flipped outward when the elevator sliding door is opened, reducing the workers' operation, shortening the waiting time, and reducing the risk of safety accidents caused by improper operation or negligence, thereby overcoming the shortcomings of the existing technology.

[0004] In order to solve the above technical problems, the utility model provides a pulley-based construction elevator flap opening and closing linkage device, comprising an elevator sliding door, a fixed pulley, a steel cable and a flap;

[0005] The elevator sliding door is a double-opening sliding door, including an upper sliding door and a lower sliding door. Two fixed pulleys are installed at the same height on the outer walls of the car on both sides. The flap is rotatably connected to the car side wall through a rotating shaft. The ends of the rotating shaft extend outside the car side wall and are fixedly connected to the S-shaped curved arm. One end of the steel cable is connected to the inner wall of the lower sliding door, and the other end is connected to the S-shaped curved arm after passing around the fixed pulley.

[0006] The upper sliding door and the lower sliding door are opened synchronously, and the lower sliding door pulls the S-shaped curved arm through the steel cable while descending, thereby driving the flap to turn outward.

[0007] As an improvement of the present invention, the fixed pulley is fixed to the outer wall of the car by welding.

[0008] Furthermore, the widths of the upper sliding door and the lower sliding door are both greater than the width of the car.

[0009] Furthermore, the inner side of the sliding door frame and the end of the S-shaped curved arm are welded with hanging rings, and the steel cable is connected and fixed to the hanging rings.

[0010] Furthermore, a counterweight slot is provided at the end of the S-shaped curved arm for installing a counterweight block.

[0011] After adopting such a design, the utility model has at least the following advantages:

[0012] 1. When the construction elevator opens its door, the steel cable pulls the S-shaped curved arm while the sliding door moves downward, thereby driving the rotating shaft and the flap to turn outward, realizing synchronous linkage between the flap rotation and the sliding door, reducing manual operation, shortening waiting time, speeding up construction progress, and significantly improving the working efficiency of the construction elevator.

[0013] 2. The linkage control of the flap and the sliding door effectively reduces the risk of safety accidents caused by improper operation or negligence, and improves construction safety.

[0014] 3. A counterweight groove is provided at the end of the S-shaped curved arm. The counterweight block can be placed in the counterweight groove and fixed with a baffle and bolts. When the sliding door moves upward, the S-shaped curved arm pulls the flap inward to the car.

[0015] 4. Handrails are set on both sides of the flap to facilitate the safe entry and exit of personnel and materials.

[0016] 5. It has a simple structure, stable operation, and durability. It can operate stably for a long time in harsh construction environments, providing a strong guarantee for the smooth progress of construction projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a structural schematic diagram of the utility model when the elevator sliding door is in a closed state.

[0019] Figure 2 It is a structural schematic diagram of the utility model from another angle when the elevator sliding door is in a closed state.

[0020] Figure 3 It is a structural schematic diagram of the utility model when the elevator sliding door is in the open state.

[0021] Explanation of the accompanying reference numerals: 1. Car; 2. Upper sliding door; 3. Lower sliding door; 4. Flap; 5. Rotating shaft; 6. S-shaped curved arm; 7. Counterweight groove; 8. Fixed pulley; 9. Steel cable; 10. Floor. DETAILED DESCRIPTION

[0022] The utility model provides a pulley-based construction elevator flap opening and closing linkage device, which comprises an elevator sliding door, a fixed pulley 8, a steel cable 9 and a flap 4.

[0023] The elevator sliding doors are bi-directional, consisting of an upper sliding door 2 and a lower sliding door 3. When opened, the upper sliding door 2 moves upward, while the lower sliding door 3 moves downward simultaneously. The widths of both the upper sliding door 1 and the lower sliding door 3 are greater than the width of the car 1. A hook is welded to the inner side of the frame of the lower sliding door 3 (the side facing the car 1) for connecting to a steel cable 9.

[0024] There are two fixed pulleys 8, which are respectively installed at the same height on the outer walls of both sides of the car 1. In this embodiment, the fixed pulleys 8 are fixed to the outer wall of the car 1 by welding.

[0025] The side wall of the car 1 is opened near the bottom, and the flap 4 is rotatably connected to the side wall of the car 1 through a rotating shaft 5. A bearing is installed between the rotating shaft 5 and the hole in the side wall of the car 1.

[0026] Preferably, a handrail is installed on the flap 4 to ensure the safety of people and materials entering and exiting.

[0027] Both ends of the rotating shaft 5 extend out of the side wall of the car 1 and are fixedly connected to an S-shaped curved arm 6. A hanging ring is welded to the end of the S-shaped curved arm 6 for connecting a steel cable 9.

[0028] The steel cable 9 passes over the fixed pulley 8 , one end of the steel cable is connected to the hanging ring on the downward sliding door 3 , and the other end is connected to the hanging ring at the end of the S-shaped curved arm 6 .

[0029] The S-shaped crank arm 6 is an S-shaped tubular structure with most of its interior being hollow and being filled near the ends so that its center of gravity is biased toward the ends. This allows the crank arm 6 to pull the flap 4 inward and flip it inward into the car 1 when the elevator sliding door is closed. Preferably, a counterweight slot 7 is further provided at the end of the S-shaped crank arm 6. A counterweight block can be inserted into the counterweight slot 7 according to usage requirements and then secured with a baffle and bolts to further increase the weight of the end.

[0030] It should be noted that in this embodiment, the fixed pulley 8 is installed above the elevator sliding door's closed centerline. This ensures that the steel cable 9 is always taut, and when the lower sliding door 3 begins to descend, the flap 4 begins to flip outward. In other embodiments, the fixed pulley 8 can also be installed below the closing line. In this case, the steel cable 9 is relaxed when the lower sliding door 3 begins to descend, and the steel cable 9 is tightened after the lower sliding door 3 passes the fixed pulley 8, causing the flap 4 to flip outward. This is suitable for applications where the flap 4 is likely to interfere with the lower sliding door 3. The specific installation height should be determined based on the construction site conditions.

[0031] When the elevator sliding door is in use, the upper sliding door 2 moves upward, the lower sliding door 3 moves downward, and the steel cable 9 pulls the S-shaped curved arm 6, which in turn drives the rotating shaft 5 and the flap 4 to turn outward. When the lower sliding door 3 is completely lowered into place, the flap 4 just turns outward and overlaps between the floor slab 10 of the current floor and the bottom plate of the car 1. When the elevator sliding door is closed, the S-shaped curved arm 6 pulls the flap 4 inward into the car, and at the same time, the upper sliding door 2 and the lower sliding door 3 are also closed.

[0032] The utility model has a simple structure and is easy to use. It can effectively realize the synchronous linkage between the elevator sliding door and the flap, reduce manual operation, shorten waiting time, and avoid the risk of safety accidents caused by improper operation or negligence, thereby improving construction efficiency and safety.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Those skilled in the art can make some simple modifications, equivalent changes or modifications based on the technical content disclosed above, which fall within the scope of protection of the present invention.

Claims

1. A pulley-based construction elevator flap opening and closing linkage device, characterized in that: Including elevator sliding doors, fixed pulleys, steel cables and flaps; The elevator sliding door is a double-opening sliding door, including an upper sliding door and a lower sliding door. Two fixed pulleys are installed at the same height on the outer walls of the car on both sides. The flap is rotatably connected to the car side wall through a rotating shaft. The ends of the rotating shaft extend outside the car side wall and are fixedly connected to the S-shaped curved arm. One end of the steel cable is connected to the inner wall of the lower sliding door, and the other end is connected to the S-shaped curved arm after passing around the fixed pulley. The upper sliding door and the lower sliding door are opened synchronously. When the lower sliding door moves downward, the S-shaped curved arm is pulled by the steel cable, thereby driving the flap to turn outward.

2. A pulley-based construction elevator flap opening and closing linkage device according to claim 1, characterized in that: The fixed pulley is fixed to the outer wall of the car by welding.

3. A pulley-based construction elevator flap opening and closing linkage device according to claim 1, characterized in that: The widths of the upper sliding door and the lower sliding door are both greater than the width of the car.

4. A pulley-based construction elevator flap opening and closing linkage device according to claim 1, characterized in that: The inner side of the sliding door frame and the end of the S-shaped curved arm are both welded with hanging rings, and the steel cables are connected and fixed to the hanging rings.

5. The pulley-based construction elevator flap opening and closing linkage device according to claim 1 is characterized in that: The end of the S-shaped curved arm is provided with a counterweight groove for installing a counterweight block.

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