Novel building hoist floor protective door automatic opening and closing device

Abstract

The utility model relates to the technical field of building construction, in particular to a novel building hoist floor protective door automatic opening and closing device which comprises a hoist and a building body, two door leaves are arranged on the building body, the door leaves are connected to a sliding device in a sliding mode, the sliding device is fixedly connected to a door frame, and a driving device is fixedly connected to the top end of the door frame. The driving device is in transmission connection with the door leaf and can drive the door leaf to move along the sliding device, a limiter is fixedly connected to the end of the door frame, two pressure switches are arranged on the side, close to the lifter, of the door frame, two rollers are correspondingly arranged on the lifter, one roller can slide up and down under limiting of the elastic rope, and the other roller can slide up and down under limiting of the elastic rope. And two pressure switches on the door frame are matched, so that the door leaf can be automatically opened when the elevator is parked on the corresponding floor, the automatic door closer can automatically close the door, and the falling problem is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a novel automatic opening and closing device for floor protection doors of a construction elevator. Background Art

[0002] During the construction of high-rise buildings, elevators are needed to transfer workers from floor to floor. The elevators are installed on the outside of the building and connected to the elevator's protective door through a temporary protective door. Therefore, the correct use of the floor protection door is closely related to the safe production of the construction site. At present, the floor protection doors of construction elevators in the construction market mostly use flat opening floor protection doors, which occupy less space and will not hinder the opening and closing of the elevator protection doors. However, the opening, closing and locking of the floor protection doors all require manual operation. During the construction process, it is easy for the floor protection doors to fail to close in time, resulting in safety hazards such as falling. Utility Model Content

[0003] The purpose of the utility model is to provide a novel automatic opening and closing device for floor protection doors of a construction elevator to solve the problems raised in the above-mentioned background technology.

[0004] A novel automatic opening and closing device for floor protection doors of a construction elevator comprises an elevator and a building body, wherein the building body is provided with two door leaves, the door leaves are slidably connected to a sliding device, the sliding device is fixedly connected to a door frame, the door frame is fixedly connected to the building body, a driving device is fixedly connected to the top of the door frame, the driving device is transmission-connected to the door leaves, the driving device can drive the door leaves to move along the sliding device, a stopper is fixedly connected to the end of the door frame, the stopper is located on the moving path of the door leaves, two pressure switches are provided on the side of the door frame close to the elevator, two rollers are correspondingly provided on the elevator, namely a fixed roller and a sliding roller, the two rollers correspond to the two pressure switches, the fixed roller is rotationally connected to the elevator, the sliding roller is slidably connected to the elevator, elastic ropes are fixedly connected to the upper and lower sides of the rolling roller, the other ends of the elastic ropes are connected to the elevator, the two pressure switches are electrically connected to the driving device, and an automatic door closer is provided on the door leaf.

[0005] Preferably, the sliding device comprises an upper slide rail and a lower slide rail, the upper and lower ends of the door leaf are rotatably connected with rollers, and the door leaf is slidably connected between the upper slide rail and the lower slide rail by means of the rollers.

[0006] Furthermore, the driving device includes a driving motor, which is fixedly connected to the top of the door frame, and a driving gear is fixedly connected to the output shaft of the driving motor. Racks are fixedly connected to the two door leaves, and the two racks are meshed with the driving gear, and the two racks are located on opposite sides of the driving gear.

[0007] Furthermore, the automatic door closer includes two return springs, one end of the two return springs is fixedly connected to the door frame, and the other ends of the two return springs are respectively connected to the two door leaves.

[0008] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, two rollers are provided on one side of the elevator close to the building, the fixed roller is relatively fixed to the elevator, the sliding roller is slidably connected to the elevator, and the upper and lower sides of the roller are connected to the elevator by elastic ropes. When the elevator is running, the roller will slide downward along the elevator relatively when rising due to inertia, and will slide upward vice versa. When the elevator is in operation, the sliding roller will leave the stable position when at rest. At this time, when the elevator passes the position of the protective door, the two pressure switches will not be connected at the same time, so the safety door remains closed. When the elevator stops at a specific floor, the sliding roller tends to a stable state after the elevator stops steadily, and it returns to a static state. At this time, the sliding roller and the fixed roller are simultaneously against the pressure switch, so that the entire circuit is connected, so that the driving motor can control the door leaf to open, and the door will not be opened due to inadequate parking, which can prevent safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the relative structure of the door leaf and the door frame in the utility model;

[0010] Figure 2 It is a schematic diagram of the relative positions of the sliding device and the driving device in the utility model from a top view;

[0011] Figure 3 It is a structural schematic diagram of the lift in the utility model;

[0012] Figure 4 The utility model is a circuit diagram of a series circuit formed by a driving motor and a pressure switch.

[0013] In the figure: 1. elevator; 11. fixed roller; 12. sliding roller; 13. elastic rope; 2. door frame; 21. pressure switch; 22. limiter; 23. block; 3. sliding device; 31. upper slide rail; 32. lower slide rail; 33. roller; 4. door leaf; 5. driving device; 51. rack; 52. driving gear; 53. driving motor; 6. return spring. DETAILED DESCRIPTION

[0014] The following will be combined with specific embodiments and attached Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0015] A novel automatic opening and closing device for floor protection doors of a construction elevator comprises a building body. The building body is a multi-story structure. When the building body is not built, an elevator 1 is needed to transport personnel and building materials. The elevator 1 is arranged close to the building body. The elevator 1 is a prior art. Two rollers are arranged on the side of the elevator 1 close to the building body. The two rollers are a fixed roller 11 and a sliding roller 12. The two rollers are fixedly connected to the side of the elevator 1. The fixed roller 11 is located at the lower part of the elevator 1, and the sliding roller 12 is located at the upper part of the elevator 1. The fixed roller 11 is rotatably connected to the elevator 1. The fixed roller 11 can rotate freely relative to the elevator 1, and the sliding roller 12 can rotate freely relative to the elevator 1. It is slidably connected to the elevator 1 in the vertical direction, and the upper and lower ends of the fixed roller 11 are fixedly connected with elastic ropes 13, and the other ends of the elastic ropes 13 are respectively fixedly connected to the elevator 1 above and below the sliding roller 12. When the elevator 1 is stationary, the sliding roller 12 is in a fixed position. When the elevator 1 moves upward or downward, because the elastic ropes 13 at both ends of the sliding roller 12 are retractable, the sliding roller 12 will slide in the direction opposite to the running direction of the elevator 1 due to inertia, so that the sliding roller 12 is separated from its position relative to the elevator 1. Therefore, the distance between the two pulleys is different when the elevator 1 runs through the floor and the stationary floor.

[0016] A door frame 2 is correspondingly provided on the building body, and a sliding device 3 is fixedly connected to the door frame 2. The sliding device 3 includes two slide rails, an upper slide rail 31 and a lower slide rail 32. A door leaf 4 is slidably connected between the upper slide rail 31 and the lower slide rail 32. The upper and lower ends of the door leaf 4 are rotatably connected with rollers 33. The rollers 33 facilitate smooth sliding of the door leaf 4 on the slide rails. Two sliding devices 3 are provided on the door frame 2. The two sliding devices 3 slidably connect the two door leaves 4 to the door frame 2, and the two upper slide rails 31 in the two sliding devices 3 are staggered in height.

[0017] A driving device 5 is provided on the top of the door frame 2, and the driving device 5 can be used to control the opening and closing of the door leaf 4 along the slide rail. The driving device 5 includes two racks 51, and the two racks 51 are fixedly connected to the top surfaces of the two door leaves 4. The teeth of the two racks 51 are opposite to each other, and a driving gear 52 is meshed and connected between the two teeth. The driving gear 52 is fixedly connected to the output shaft of a driving motor 53. The driving motor 53 is driven by electricity to rotate and thus drive the driving gear 52 to rotate. The rotation of the driving gear 52 will drive the two racks 51 to move in opposite directions, thereby realizing that the driving motor 53 controls the two door leaves 4 to open or close at the same time.

[0018] Two limiters 22 are fixedly connected to the door frame 2, and the limiters 22 are respectively located at the half and one-quarter of the top of the door frame 2. A stopper 23 is fixedly provided on the rack 51 with teeth facing downward. The stopper 23 moves between the two limiters 22. When the door leaf 4 is fully opened and closed, it will respectively abut against the two limiters 22 to prevent the door leaf 4 from detaching from the sliding device 3.

[0019] Two pressure switches 21 are fixedly connected to the door frame 2. The pressure switches 21 are of prior art. They remain triggered when continuously subjected to pressure, and remain powered off after the pressure is removed. The two pressure switches 21 are correspondingly arranged with the two rollers on the elevator 1. When the elevator 1 is parked at the floor, the fixed roller 11 and the sliding roller 12 just press on the corresponding pressure switches 21, so that the pressure switches 21 remain in the on state. The two pressure switches 21 are connected in series with the drive motor 53 and the power supply. Only when the two pressure switches 21 are turned on at the same time can a closed loop be formed, thereby starting the drive motor 53 and controlling the door leaf 4 to slide open. Therefore, the drive motor 53 on the corresponding floor can be operated only when the elevator 1 is parked at the corresponding floor, thereby opening the door leaf 4. When the elevator 1 moves through the floor, the sliding roller 12 slides out of the corresponding position, and thus the door leaf 4 cannot be opened, thereby increasing the operating safety of the elevator 1 and preventing falling accidents.

[0020] Two return springs 6 are provided on the door frame 2, one end of the return spring 6 is fixedly connected to the middle of the door frame 2, and the other ends of the two return springs 6 are respectively fixedly connected to the two door leaves 4. The return spring 6 has a pulling force to pull the two door leaves 4 towards each other. When the elevator 1 stops at a floor and the drive motor 53 drives the door leaf 4 to open, the elevator 1 leaves the floor, and the door leaf 4 loses the drive of the drive motor 53. Therefore, it can automatically close under the action of the return spring 6, so as to achieve timely closure and prevent safety hazards.

[0021] Except for the technical features described in the specification, all other technical features are known technologies to those skilled in the art.

[0022] In the present utility model, "up", "down", "left", "right", "front" and "back" are relative positions used to conveniently describe positional relationships, and therefore cannot be understood as absolute positions to limit the scope of protection.

[0023] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A new type of automatic opening and closing device for floor protection doors of construction elevators, including an elevator and a building, characterized in that: The building body is provided with two door leaves, the door leaves are slidably connected to the sliding device, the sliding device is fixedly connected to a door frame, the door frame is fixedly connected to the building body, the top of the door frame is fixedly connected to a driving device, the driving device is transmission-connected to the door leaves, the driving device can drive the door leaves to move along the sliding device, the end of the door frame is fixedly connected to a limiter, the limiter is located on the moving path of the door leaves, two pressure switches are provided on the side of the door frame close to the elevator, the elevator is correspondingly provided with two rollers, namely a fixed roller and a sliding roller, the two rollers correspond to the two pressure switches, the fixed roller is rotatably connected to the elevator, the sliding roller is slidably connected to the elevator, elastic ropes are fixedly connected to the upper and lower sides of the rolling rollers, the other ends of the elastic ropes are connected to the elevator, the two pressure switches are electrically connected to the driving device, and the door leaf is provided with an automatic door closer.

2. According to claim 1, a new type of automatic opening and closing device for floor protection doors of construction elevators is characterized in that: The sliding device comprises an upper slide rail and a lower slide rail. The upper and lower ends of the door leaf are both rotatably connected with rollers, and the door leaf is slidably connected between the upper slide rail and the lower slide rail by means of the rollers.

3. A novel automatic opening and closing device for floor protection doors of construction elevators according to claim 2, characterized in that: The driving device includes a driving motor, which is fixedly connected to the top of the door frame. A driving gear is fixedly connected to the output shaft of the driving motor. Racks are fixedly connected to the two door leaves. The two racks are meshed with the driving gear, and the two racks are located on opposite sides of the driving gear.

4. A novel automatic opening and closing device for floor protection doors of construction elevators according to claim 3, characterized in that: The automatic door closer comprises two return springs, one end of the two return springs is fixedly connected to the door frame, and the other ends of the two return springs are respectively connected to the two door leaves.

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