Intelligent safety protection device for construction elevator

Abstract

The invention discloses a construction elevator intelligent safety protection device which comprises an edge protection device and an automatic door opening device, the edge protection device comprises an elevator outer frame, an elevator lower door, telescopic frames and a tension spring, the upper portion of the elevator lower door extends outwards to be provided with a first pull ring, and the two telescopic frames are arranged on the outer side edge of the elevator outer frame. The telescopic frame is tensioned through a tension spring; the automatic door opening device comprises a door beam, a door frame, two servo motors, a left door, a right door, a controller and two touch switches, the controller and the two servo motors are arranged on the door beam, the touch switches are arranged on a floor, and the two servo motors drive the left door and the right door through transmission rods. The telescopic frame is installed between the elevator outer frame and the building and interacts with the elevator lower door, the telescopic frame is opened when the elevator lower door is opened, in addition, the safety door can be fully automatically opened, the safety protection effect of constructors is improved, operation is convenient, the improvement cost is low, and the safety door is worthy of popularization.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction protection, and specifically relates to an intelligent safety protection device for a construction elevator. Background Art

[0002] Construction elevators are common equipment on construction sites. They are important vertical transportation equipment in high-rise building construction. Their use is essential to improving work efficiency and ensuring worker safety. Construction elevators have taken multiple safety measures. For example, travel switches are installed to ensure that the motor is in a braking state under certain circumstances, and limit switches are installed to prevent the elevator from hitting the top or falling.

[0003] However, in addition to these, there are still safety hazards in actual use. For example, there is a certain distance between most elevators and buildings. When the elevator stops and people walk out, they will pay attention to their feet, but rarely pay attention to the two sides. If the items being transported are likely to slide from the sides, they may even bring people down. There are many uncertain factors, which threaten the safety of construction workers.

[0004] In addition, in addition to its own upper and lower doors, the construction elevator is equipped with safety doors (wire mesh doors) on each floor. When the construction elevator reaches the corresponding floor, its own upper and lower doors are opened first, and the retracted pedals are also opened accordingly, and then the safety doors are manually opened to start transporting goods. This structure is inefficient and needs to be improved. Summary of the invention

[0005] To solve the above problems, the present invention discloses an intelligent safety protection device for construction elevators. A telescopic frame is installed at the interval. When the elevator door is opened, the telescopic frame opens, thereby improving the safety protection effect of construction workers. In addition, the safety door can be opened fully automatically. The structure is novel and easy to use, and it is worthy of promotion.

[0006] To achieve the above object, the technical solution of the present invention is as follows: An intelligent safety protection device for a construction elevator, comprising an edge protection device and an automatic door opening device. The edge protection device includes an elevator outer frame, an elevator lower door, a telescopic frame, a tension spring, and an automatic door opening device. The elevator lower door moves up and down along the inner wall of the elevator outer frame. A first pull ring is provided above the elevator lower door and extends outward. An upper and lower fixing plates are provided on the outer side of the elevator outer frame. The number of the telescopic frames is two and they are respectively installed between the elevator outer frame and the building. The telescopic frame includes a front vertical rod, a rear vertical rod and a cross rod. The front vertical rod is vertically and parallelly arranged with the rear vertical rod. A plurality of cross rods are arranged between the front vertical rod and the rear vertical rod. The cross rod is movably connected with the front vertical rod and the rear vertical rod. The rear vertical rod is vertically installed on the fixing plate. A second pull ring is provided below the front vertical rod. The tension spring is arranged between the first pull ring and the second pull ring. The automatic door opening device includes a door beam, a door frame, two servo motors, a left door, a right door, a controller, and two touch switches. The door frame is fixed on both sides of the door beam. The left door and the right door are respectively hinged in the door frame through hinges. The controller and the two servo motors are arranged on the door beam. The touch switch is arranged on the floor. The position of the touch switch corresponds to the position where the front vertical rod falls. The touch switch and the servo motor are connected to the controller. The two servo motors drive the left door and the right door through a transmission rod.

[0007] As an improvement of the present invention, the front vertical rod, the rear vertical rod and the cross rod are square tubes.

[0008] As an improvement of the present invention, the telescopic frame has a height of 1.2-1.5 m and a width of 20-35 cm.

[0009] As an improvement of the present invention, the cross bar is rotatably connected to the front vertical bar and the rear vertical bar via a latch.

[0010] As an improvement of the present invention, a limit block is provided on the floor.

[0011] The working principle of the intelligent safety protection device for construction elevators described in the present invention is: The first pull ring on the upper outer side of the elevator lower door is connected to the second pull ring under the front vertical rod through a tension spring. Before the elevator is running, the construction workers (including items) are in the elevator, the elevator lower door rises and the elevator upper door falls, and finally closes together to close the elevator door (the construction elevator has upper and lower doors, not left and right doors). When the elevator lower door rises, the tension spring pulls the front vertical rod to move backward and upward, so that the front vertical rod is close to the rear vertical rod (the rear vertical rod is fixed), the telescopic frame contracts, and the elevator starts to run. When the elevator stops, the elevator upper door rises and the elevator lower door falls, the elevator door opens, and when the elevator lower door falls, the front vertical rod falls downward and outward under the action of gravity and elastic force, the telescopic frame opens to form a guardrail set between the elevator outer frame and the building, and the lower end of the front vertical rod finally falls on the touch switch on the floor, and the upper and lower fixed plates play a limiting role, limiting the movement of the first pull ring between the two fixed plates; When the lower end of the front vertical rod falls on the touch switch on the floor, the touch switch transmits a signal to the controller, and the controller controls the two servo motors to drive the left door and the right door to open, thereby realizing the fully automatic opening and closing of the safety door.

[0012] The beneficial effects of the present invention are: (1) The present invention installs a telescopic frame between the outer frame of the elevator and the building, which interacts with the lower door of the elevator. When the lower door of the elevator is opened, the telescopic frame opens, thereby improving the safety protection effect of the construction workers. (2) The edge protection device adopts an integrated structure, which is implemented by gravity and elastic force, and is easy to operate. (3) When the construction elevator stops at a certain floor, the edge protection device has been opened when the elevator door is opened, and then the safety door can be opened. The design is ingenious and safe.

[0013] (4) The structure should be novel, easy to modify and worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the door closing state of the construction elevator described in the present invention.

[0015] Figure 2 This is a schematic diagram of the door opening state of the construction elevator described in the present invention.

[0016] Figure 3 It is a side view of the construction elevator of the present invention in the closed door state.

[0017] Figure 4 It is a side view of the construction elevator of the present invention in the state of door opening.

[0018] Figure 5 It is a schematic diagram of the rotation of the latch described in the present invention.

[0019] Figure 6 It is a top view of the present invention.

[0020] Figure 7 This is a schematic diagram of the safety door described in the present invention.

[0021] List of Figure Symbols: 1. Elevator outer frame, 2. Elevator lower door, 3. Telescopic frame, 4. Tension spring, 5. First pull ring, 7. Fixed plate, 8. Front vertical rod, 9. Rear vertical rod, 10. Cross bar, 11. Second pull ring, 12. Latch, 13. Elevator upper door, 14. Door beam, 15. Door frame, 16. Servo motor, 17. Left door, 18. Right door, 19. Controller, 20. Touch switch, 21. Transmission rod, 22. Limit block, 23. Construction elevator, 24. Floor, 25. Retractable pedal. DETAILED DESCRIPTION

[0022] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0023] As shown in the figure, the intelligent safety protection device for construction elevators described in the present invention includes an edge protection device and an automatic door opening device. The edge protection device includes an elevator outer frame 1, an elevator lower door 2, a telescopic frame 3, and a tension spring 4. The construction elevator has upper and lower doors. The elevator upper door 13 and the elevator lower door 2 move up and down along the inner wall of the elevator outer frame 1. A first pull ring 5 is extended outward from the top of the elevator lower door 2, and a second pull ring 11 is provided on the outer side of the telescopic frame 3. The tension spring 4 is arranged between the first pull ring 5 and the second pull ring 11.

[0024] Two upper and lower fixing plates 7 are arranged on the outer side of the elevator outer frame 1. There are two telescopic frames 2, which are respectively installed between the elevator outer frame and the building. The telescopic frame 2 includes a front vertical rod 8, a rear vertical rod 9 and a cross rod 10. The front vertical rod 8 and the rear vertical rod 9 are vertically and parallelly arranged. A plurality of cross rods are arranged between the front vertical rod 8 and the rear vertical rod 9. The cross rod 10 is rotatably connected to the front vertical rod 8 and the rear vertical rod 9 through a latch. The rear vertical rod 9 is vertically installed on the fixing plate 7, and a second pull ring 11 is arranged below the front vertical rod 8.

[0025] The automatic door opening device includes a door beam 14, a door frame 15, two servo motors 16, a left door 17, a right door 18, a controller 19, and two touch switches 20. The door frame 15 is fixed on both sides of the door beam 14. The left door 17 and the right door 18 are respectively hinged in the door frame 15 through hinges. The controller 19 and the two servo motors 16 are arranged on the door beam 14. The touch switch 20 is arranged on the floor 24. The position of the touch switch 20 corresponds to the position where the front vertical rod falls. The touch switch 20 and the servo motor 16 are connected to the controller 19. The two servo motors 16 drive the left door 17 and the right door 18 through the transmission rod 21.

[0026] Before the construction elevator 23 moves, the construction workers enter the elevator (at this time the telescopic frame 3 is open to protect the gaps on both sides), the elevator lower door 2 rises and the elevator upper door 13 descends and finally closes together to close the elevator door. When the elevator lower door 2 rises, the tension spring 4 pulls the front vertical rod 8 to move backward and upward (obliquely upward), so that the front vertical rod 8 is close to the rear vertical rod 9 (the rear vertical rod is fixed), the telescopic frame 3 shrinks, and the elevator starts to move. When the elevator stops, the elevator upper door 13 rises and the elevator lower door 2 descends, the elevator door opens, and when the elevator lower door descends, the front vertical rod falls downward and outward (obliquely downward) under the action of gravity and elastic force, and the telescopic frame 3 opens to form a guardrail arranged between the elevator outer frame and the building. The lower end of the front vertical rod 8 finally falls on the touch switch 20 on the floor, and the upper and lower fixed plates 7 play a limiting role. The first pull ring 5 can only move between the two fixed plates.

[0027] When the lower end of the front vertical rod 8 falls on the touch switch 20 on the floor, the touch switch 20 transmits a signal to the controller 19, and the controller 19 controls the two servo motors 16 to drive the left door 17 and the right door 18 to open, thereby realizing the fully automatic opening and closing of the safety door.

[0028] The front vertical rod 8, the rear vertical rod 9 and the cross rod 10 of the present invention are square tubes, and the cross rod 10 is rotatably connected with the front vertical rod 8 and the rear vertical rod 9 by a latch. Figure 5 As shown, the three can move freely when subjected to force.

[0029] The telescopic frame of the present invention has a height of 1.2-1.5m and a width of 20-35cm, and can ensure that people and objects will not fall.

[0030] Under normal circumstances, the servo motor controls the opening angles of the left door 17 and the right door 18. In order to prevent the servo motor from losing control, a limit block 25 is provided on the floor behind the door, which can physically pause when losing control to prevent damage to the equipment (door, door frame, door beam).

[0031] The present invention installs a telescopic frame 3 between the outer frame of the elevator and the building to interact with the lower door 2 of the elevator. When the lower door 2 of the elevator is opened, the telescopic frame 3 opens, thereby improving the safety protection effect of construction workers. In addition, the edge protection device is novel in design, does not need to be connected to an additional power supply, and is implemented by gravity and elastic force. It is easy to operate and has a low modification cost.

[0032] When the construction elevator stops at a certain floor, when the elevator door is opened, the edge protection device has been opened, and then the safety door can be opened. The whole set of actions is implemented in an integrated manner, with a clever design and strong safety (if the edge protection device is not opened, that is, the lower end of the front vertical rod 8 does not eventually fall on the touch switch 20 on the floor, then the left door 17 and the right door 18 will not be opened, ensuring construction safety).

[0033] It should be noted that the above content only illustrates the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. An intelligent safety protection device for a construction elevator, characterized in that: Including edge protection device and automatic door opening device, The edge protection device comprises an elevator outer frame (1), an elevator lower door (2), a telescopic frame (3), and a tension spring (4); the elevator lower door (2) moves up and down along the inner wall of the elevator outer frame (1); a first pull ring (5) is provided on the upper side of the elevator lower door (2); two upper and lower fixing plates (6) are provided on the outer side of the elevator outer frame (1); two telescopic frames (3) are respectively installed between the elevator outer frame and the building; the telescopic frames (3) comprise a front vertical rod ( 8), a rear vertical rod (9) and a cross rod (10), the front vertical rod (8) and the rear vertical rod (9) are arranged vertically and parallel, a plurality of cross rods (10) are arranged between the front vertical rod (8) and the rear vertical rod (9), the cross rod (10) is movably connected with the front vertical rod (8) and the rear vertical rod (9), the rear vertical rod (9) is vertically mounted on the fixing plate (7), a second pull ring (11) is provided below the front vertical rod (8), and the tension spring (4) is arranged between the first pull ring (5) and the second pull ring (11); The automatic door opening device comprises a door beam (14), a door frame (15), two servo motors (16), a left door (17), a right door (18), a controller (19), and two touch switches (20). The door frame (15) is fixed on both sides of the door beam (14). The left door (17) and the right door (18) are respectively hinged in the door frame (15) through hinges. The controller (19) and the two servo motors (16) are arranged on the door beam (14). The touch switch (20) is arranged on the floor (24). The position of the touch switch (20) corresponds to the position where the front vertical rod (3) falls. The touch switch (20) and the servo motor (16) are connected to the controller (19). The two servo motors (16) drive the left door (17) and the right door (18) through a transmission rod (21).

2. The intelligent safety protection device for construction elevator according to claim 1 is characterized in that: The front vertical rod (8), the rear vertical rod (9) and the cross rod (10) are square tubes.

3. The intelligent safety protection device for a construction elevator according to claim 1 is characterized in that: The telescopic frame (3) has a height of 1.2-1.5 m and a width of 20-35 cm.

4. The intelligent safety protection device for construction elevator according to claim 1 is characterized in that: The cross bar (10) is rotatably connected to the front vertical bar (8) and the rear vertical bar (9) via a latch (12).

5. The intelligent safety protection device for construction elevator according to claim 1 is characterized in that: A limit block (25) is provided on the floor (24).

6. The working principle of the intelligent safety protection device for construction elevators according to claim 1 is as follows: The first pull ring (5) on the upper outer side of the elevator lower door (2) is connected to the second pull ring (11) on the lower side of the front vertical rod through a tension spring (4). The construction elevator has upper and lower doors. Before the elevator is driven, the construction personnel are in the elevator. The elevator lower door (2) rises and the elevator upper door (13) falls and finally closes together to close the elevator door. When the elevator lower door (2) rises, the tension spring (4) pulls the front vertical rod (8) to move backward and upward, so that the front vertical rod (8) is close to the rear vertical rod (9). At this time, the telescopic frame (3) is retracted and the electric The elevator starts to move, and when the elevator stops, the upper door (13) of the elevator rises and the lower door (2) of the elevator falls, and the elevator door opens. When the lower door (2) of the elevator falls, the front vertical rod (8) falls downward and outward under the action of gravity and elastic force, and the telescopic frame (3) opens to form a guardrail arranged between the outer frame of the elevator and the building. The lower end of the front vertical rod (3) finally falls on the contact switch (20) on the floor, and the upper and lower fixed plates (7) play a limiting role, limiting the first pull ring (5) from moving between the two fixed plates; When the lower end of the front vertical rod (8) falls on the touch switch (20) on the floor, the touch switch (20) transmits a signal to the controller (19), and the controller (19) controls the two servo motors (16) to drive the left door (17) and the right door (18) to open, thereby realizing the fully automatic opening and closing of the safety door.

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