Safety device for interlocking landing doors of construction hoists

Abstract

This utility model relates to the field of construction hoist technology and discloses a landing door interlocking safety device for construction hoists. It includes two landing doors, each with a mounting rail on its rear side. Two movable grooves are formed on the rear surface of each landing door, and a first movable support rod is installed inside each of the two movable grooves. A first sliding groove is formed on the surface of the mounting rail, and the first movable support rod is slidably connected inside the first sliding groove. Through the cooperation between the first movable support rod and the sliding groove, the landing door can only be opened smoothly when the construction hoist cage is accurately positioned at the floor level. This effectively prevents safety accidents caused by misoperation or the cage not being in position before opening the landing door. Simultaneously, the cooperation of the support base, the second movable support rod, and the sliding rail further enhances the stability and structural strength of the landing door during opening and closing, extending the service life of the device.

Description

Technical Field

[0001] This utility model relates to the field of construction hoist technology, specifically to a landing door interlocking safety device for construction hoists. Background Technology

[0002] When the construction hoist cage stops next to a building floor, the building floor door needs to be opened before construction workers can enter the building to carry out construction.

[0003] Existing construction hoist landing doors can be opened arbitrarily by operators regardless of whether the cage is parked next to the floor. Furthermore, some landing doors are manually opened and closed by the operator inside the cage, and then locked using a bolt or lock. If the operator is negligent or forgets to secure the landing door for other reasons, the door may be opened incorrectly, leading to safety accidents, potentially causing falls and injuries, posing a significant safety hazard. Therefore, we propose a landing door interlocking safety device for construction hoists to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a landing door interlocking safety device for construction hoists, thereby solving the problem of poor landing door security in some existing construction hoists.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a landing door interlocking safety device for a construction hoist, comprising two landing doors, each landing door having a mounting rail on its rear side, two movable grooves on the rear surface of each landing door, each movable groove having a first movable support rod inside, a first sliding groove on the surface of the mounting rail, the first movable support rod being slidably connected inside the first sliding groove, a through groove on the surface of the mounting rail communicating with the first sliding groove and being adapted to the first movable support rod, a second sliding groove on the surface of the mounting rail, an auxiliary support component inside the second sliding groove, and a locking component on the rear surface of each landing door.

[0006] Preferably, the auxiliary support assembly includes two support seats, both of which are slidably connected inside the second slide groove. Two sliding rails are fixedly connected to the rear surface of the door. A second movable support rod is fixedly connected to the side surface of the support seat facing the sliding rail. The two second movable support rods are slidably connected inside the two sliding rails respectively.

[0007] Preferably, the locking assembly includes a fixing plate, which is fixedly connected to the rear surface of the door. The vertical plate of the fixing plate has two telescopic grooves inside, and a lifting rod is slidably fitted inside each of the two telescopic grooves. The surface of the lifting rod has a groove that matches the first movable support rod.

[0008] Preferably, a rotating rod is rotatably sleeved inside the vertical plate of the fixed plate. The two ends of the rotating rod respectively rotatably penetrate into the interior of two telescopic grooves. The end of the rotating rod located inside the two telescopic grooves is provided with a threaded groove. The two threaded grooves are mirror images of each other. The two lifting rods are respectively threaded onto the two ends of the rotating rod.

[0009] Preferably, the fixed plate has a cavity inside, and a drive rod is rotatably connected inside the cavity. Both the drive rod and the rotating rod are fixedly fitted with bevel gears at one end inside the cavity, and the two bevel gears are meshed together.

[0010] Preferably, the drive rod rotates through the fixed plate, and an unlocking knob is fixedly connected to one end of the drive rod located outside the fixed plate.

[0011] Preferably, the upper telescopic groove has a clearance groove inside, and a pressure plate is fixedly connected to the surface of the upper lifting rod, and the pressure plate is slidably connected inside the clearance groove.

[0012] Preferably, a trigger button is provided inside the clearance groove, and a warning light is provided on the front surface of the door, with the warning light and the trigger button being signal-connected.

[0013] Compared with the prior art, this utility model provides a landing door interlocking safety device for construction hoists, which has the following beneficial effects: 1. The interlocking safety device for the landing door of the construction hoist, through the cooperation between the first movable support rod and the through groove, ensures that the landing door can only be opened smoothly when the construction hoist cage is accurately stopped at the floor position. This effectively prevents safety accidents caused by misoperation or the hoist cage not being in place and opening the landing door. At the same time, with the cooperation of the support base, the second movable support rod and the sliding rail, the stability and structural strength of the landing door during the opening and closing process are further enhanced, and the service life of the device is extended.

[0014] 2. The interlocking safety device for the landing door of the construction hoist can, in an emergency, drive the lifting rod to separate from the first movable support rod by rotating the unlocking knob, thereby realizing the emergency opening of the landing door. This further improves the functionality of the device and makes it highly practical. In addition, with the help of the sound and light alarm, it can remind the staff that the lifting rod is not restricting the first movable support rod, that is, the landing door is in an emergency opening state. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the interlocking safety device for the landing doors of a construction hoist according to the present invention; Figure 2 This is a first schematic diagram of the rear structure of the door of this utility model; Figure 3 This is a second schematic diagram of the rear structure of the door of this utility model; Figure 4 This is a schematic diagram of the installation track of this utility model; Figure 5 This is a cross-sectional view of the fixing plate of this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 for Figure 5 Enlarged view of point B in the middle.

[0016] In the diagram: 1. Floor door; 2. Mounting track; 3. Movable groove; 4. First movable support rod; 5. First sliding groove; 6. Through groove; 7. Second sliding groove; 8. Support base; 9. Second movable support rod; 10. Sliding track; 11. Fixing plate; 12. Telescopic groove; 13. Lifting rod; 14. Rotating rod; 15. Threaded groove; 16. Cavity; 17. Drive rod; 18. Bevel gear; 19. Unlocking knob; 20. Clearance groove; 21. Pressure plate; 22. Trigger button; 23. Warning light. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-7This utility model provides a technical solution: a landing door interlocking safety device for construction hoists, comprising two landing doors 1, each with a mounting rail 2 for connection on its rear side. Since the two landing doors 1 have identical structures, the following description focuses on one landing door 1. Two movable grooves 3 are formed on the rear surface of the landing door 1 to restrict its movement trajectory. Each of the two movable grooves 3 contains a first movable support rod 4 for support. The surface of the mounting rail 2 also has a first sliding groove 5 for restricting movement trajectory. The first movable support rod 4 is slidably connected inside the first sliding groove 5. The surface of the mounting rail 2 also has... There is a through groove 6 for cooperating with the first movable support rod 4. The through groove 6 is connected to the first sliding groove 5. The through groove 6 and the first movable support rod 4 are adapted to each other. When the elevator basket stops at the designated position, the first movable support rod 4 will be aligned with the through groove 6, so that the landing door 1 can be slid open. The surface of the mounting track 2 is provided with a second sliding groove 7. The interior of the second sliding groove 7 is provided with an auxiliary support component. The rear surface of the landing door 1 is provided with a locking component. When the landing door 1 is opened, the locking device makes the first movable support rod 4 and the landing door 1 relatively stationary. Therefore, the first movable support rod 4 will move synchronously with the landing door 1.

[0019] The auxiliary support assembly includes two support seats 8 for support. Both support seats 8 are slidably connected inside the second slide groove 7. Two sliding rails 10 for connection are fixedly connected to the rear surface of the landing door 1. A second movable support rod 9 for support is fixedly connected to the side surface of the support seat 8 facing the sliding rail 10. The two second movable support rods 9 are slidably connected inside the two sliding rails 10 respectively. When the landing door 1 is opened, the sliding rails 10 will also slide outside the second movable support rods 9, thereby further ensuring the stability of the landing door 1 when it is opened.

[0020] The locking assembly includes a fixing plate 11, which is fixedly connected to the rear surface of the landing door 1. The vertical plate of the fixing plate 11 has two telescopic grooves 12 inside to limit the movement trajectory of the structure. Each of the two telescopic grooves 12 has a slidingly fitted lifting rod 13 for use with the first movable rod 4. The surface of the lifting rod 13 has a groove adapted to the first movable support rod 4. Through the support of the lifting rod 13 on the first movable support rod 4, when the lifting rod 13 and the first movable support rod 4 are pressed together, if the first movable support rod 4 is aligned with the through groove 6, then the landing door 1, the fixing plate 11, and the first movable support rod 4 will lock together. The first movable support rod 4 will move synchronously, and then the first movable support rod 4 will slide out from the inside of the through groove 6. At this time, the landing door 1 will open smoothly. If it is not aligned, the first movable support rod 4 will abut against the inner wall of the first slide groove 5, and the landing door 1 cannot be opened. In addition, if the landing door 1 needs to be forcibly opened before the elevator stops in place, the lifting rod 13 and the first movable support rod 4 can be separated. When the landing door 1 is opened, the first movable support rod 4 will abut against the inner wall of the first slide groove 5, and then the first movable support rod 4 will slide inside the movable groove 3, thereby realizing the forced opening of the landing door 1.

[0021] The vertical plate of the fixed plate 11 is rotatably fitted with a rotating rod 14 for transmission. The two ends of the rotating rod 14 are respectively rotatably inserted into the interior of two telescopic grooves 12. The ends of the rotating rod 14 located inside the two telescopic grooves 12 are provided with threaded grooves 15 for transmission. The two threaded grooves 15 are mirror images. The two lifting rods 13 are respectively threaded onto the two ends of the rotating rod 14. The rotation of the rotating rod 14 can drive the lifting rods 13 to slide inside the telescopic grooves 12. Since the two threaded grooves 15 are mirror images, the two lifting rods 13 will move away from each other or move closer to each other when the rotating rod 14 rotates.

[0022] The fixed plate 11 has a cavity 16 inside, and a drive rod 17 for transmission is rotatably connected inside the cavity 16. Both the drive rod 17 and the rotating rod 14 are fixedly fitted with bevel gears 18 at one end inside the cavity 16. The two bevel gears 18 are meshed and connected. The rotation of the drive rod 17 and the transmission of the two bevel gears 18 can drive the rotation of the rotating rod 14.

[0023] The drive rod 17 rotates through the fixed plate 11. One end of the drive rod 17 located outside the fixed plate 11 is fixedly connected to an unlocking knob 19 that is easy for staff to hold. The unlocking knob 19 further improves the convenience of operation for staff.

[0024] The upper telescopic groove 12 has a relief groove 20 inside for limiting the movement trajectory of the structure and providing space for the installation of the workpiece. The upper lifting rod 13 has a pressure plate 21 fixedly connected to its surface, and the pressure plate 21 is slidably connected inside the relief groove 20.

[0025] The interior of the clearance groove 20 is equipped with a trigger button 22 for cooperating with the pressure plate 21. The front surface of the landing door 1 is equipped with a warning light 23. The warning light 23 and the trigger button 22 are connected by a signal. When the landing door 1 needs to be opened in an emergency, the lifting rod 13 and the first movable support rod 4 need to be separated, that is, the lifting rod 13 slides inside the telescopic groove 12. After the lifting rod 13 and the first movable support rod 4 are separated, the lifting rod 13 will also press the trigger button 22 by the pressure plate 21. At this time, the warning light 23 will emit an audible and visual warning.

[0026] In the above embodiments, a flexible pad can be provided on the contact surface of the pressure plate 21 and the trigger button 22 to avoid the pressure plate 21 damaging the trigger button 22 and extend the service life of the trigger button 22.

[0027] Working principle: When the construction hoist's landing door interlocking safety device is in use, and the hoist stops at a designated position, the first movable support rod 4 and the through groove 6 are aligned. The lifting rod 13 supports the first movable support rod 4, so that when the lifting rod 13 and the first movable support rod 4 are pressed together, if the first movable support rod 4 and the through groove 6 are aligned, the landing door 1, the fixing plate 11 and the first movable support rod 4 will move synchronously, and then the first movable support rod 4 will slide out from the inside of the through groove 6, at which point the landing door 1 will open smoothly.

[0028] If the elevator does not stop in place, that is, if the first movable support rod 4 and the through groove 6 are not aligned, the first movable support rod 4 will abut against the inner wall of the first sliding groove 5 when the landing door 1 is opened, and the landing door 1 cannot be opened at this time.

[0029] In addition, if the landing door 1 needs to be opened urgently before the elevator stops, the rotation of the drive rod 17 and the transmission of the two bevel gears 18 can drive the rotation of the rotating rod 14. The rotation of the rotating rod 14 can drive the lifting rod 13 to slide inside the telescopic groove 12. Since the two threaded grooves 15 are mirror images, the two lifting rods 13 will move away from each other or move closer to each other when the rotating rod 14 rotates. When the lifting rod 13 separates from the first movable support rod 4, when the landing door 1 is opened, the first movable support rod 4 will abut against the inner wall of the first sliding groove 5, and then the first movable support rod 4 will slide inside the movable groove 3, thereby realizing the forced opening of the landing door 1.

[0030] When it is necessary to open the landing door 1 in an emergency, the lifting rod 13 and the first movable support rod 4 need to be separated, that is, the lifting rod 13 slides inside the telescopic groove 12. After the lifting rod 13 and the first movable support rod 4 are separated, the lifting rod 13 will also press the trigger button 22 by the pressure plate 21. At this time, the warning light 23 will emit an audible and visual warning.

[0031] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A landing door interlock safety device for a construction elevator comprising two landing doors (1), characterized in that: The rear sides of both landing doors (1) are provided with mounting rails (2). The rear surface of the landing door (1) has two movable grooves (3). The interior of each movable groove (3) is provided with a first movable support rod (4). The surface of the mounting rail (2) is provided with a first sliding groove (5). The first movable support rod (4) is slidably connected to the interior of the first sliding groove (5). The surface of the mounting rail (2) is provided with a through groove (6). The through groove (6) is connected to the first sliding groove (5). The through groove (6) is adapted to the first movable support rod (4). The surface of the mounting rail (2) is provided with a second sliding groove (7). The interior of the second sliding groove (7) is provided with an auxiliary support component. The rear surface of the landing door (1) is provided with a locking component.

2. The interlocking safety device for landing doors of a construction hoist according to claim 1, characterized in that: The auxiliary support assembly includes two support seats (8), both of which are slidably connected inside the second slide groove (7). The rear surface of the door (1) is fixedly connected to two sliding rails (10). The side surface of the support seat (8) facing the sliding rail (10) is fixedly connected to a second movable support rod (9), and the two second movable support rods (9) are slidably connected inside the two sliding rails (10).

3. The interlocking safety device for landing doors of a construction hoist according to claim 2, characterized in that: The locking assembly includes a fixing plate (11), which is fixedly connected to the rear surface of the door (1). The vertical plate of the fixing plate (11) has two telescopic grooves (12) inside. The two telescopic grooves (12) are slidably fitted with lifting rods (13) inside. The surface of the lifting rods (13) has a groove that matches the first movable support rod (4).

4. The interlocking safety device for landing doors of a construction hoist according to claim 3, characterized in that: The vertical plate of the fixed plate (11) is fitted with a rotating rod (14) inside. The two ends of the rotating rod (14) are respectively rotated and penetrate into the interior of the two telescopic grooves (12). The rotating rod (14) is provided with a threaded groove (15) at one end inside the two telescopic grooves (12). The two threaded grooves (15) are mirror images of each other. The two lifting rods (13) are respectively threaded onto the two ends of the rotating rod (14).

5. The interlocking safety device for landing doors of a construction hoist according to claim 4, characterized in that: The fixed plate (11) has a cavity (16) inside, and a drive rod (17) is rotatably connected inside the cavity (16). Both the drive rod (17) and the rotating rod (14) are fixedly fitted with bevel gears (18) at one end inside the cavity (16), and the two bevel gears (18) are meshed together.

6. The interlocking safety device for landing doors of a construction hoist according to claim 5, characterized in that: The drive rod (17) rotates through the fixed plate (11), and an unlocking knob (19) is fixedly connected to one end of the drive rod (17) outside the fixed plate (11).

7. The interlocking safety device for landing doors of a construction hoist according to claim 6, characterized in that: The upper telescopic groove (12) has a relief groove (20) inside, and the upper lifting rod (13) has a pressure plate (21) fixedly connected to its surface. The pressure plate (21) is slidably connected inside the relief groove (20).

8. The interlocking safety device for landing doors of a construction hoist according to claim 7, characterized in that: The recessed groove (20) is equipped with a trigger button (22), and the front surface of the door (1) is equipped with a warning light (23). The warning light (23) and the trigger button (22) are connected by a signal.

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