Anti-falling device for passenger elevator

Abstract

The utility model discloses a passenger elevator anti-falling device, which relates to the field of passenger elevator anti-falling, and comprises a hoistway, a passenger elevator cabin is arranged in the hoistway, the two sides of the passenger elevator cabin are fixedly connected with main anti-falling components, and the main anti-falling components comprise protective grooves arranged on the two sides of the passenger elevator cabin. Sliding frames are fixedly connected to the positions, located on the peripheral sides of the protection grooves, of the two sides of the passenger elevator cabin, electric push rods are fixedly connected to the interiors of the protection grooves, and push plates are fixedly connected to the other ends of the electric push rods. By the adoption of the structure, the push plate can enter the sliding groove when being pushed by the electric push rod to extend out of the sliding hole, so that friction force is generated when the push plate makes contact with the interior of the sliding groove, the speed of an elevator is slow, and meanwhile the friction force between the push plate and the interior of the sliding groove can be increased under the action of the first resistance block and the second resistance block; and when the friction force is larger than the gravity of the elevator, the effect of fixing the elevator can be achieved, and therefore the anti-falling effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of passenger elevator anti-falling, and particularly relates to a passenger elevator anti-falling device. Background Art

[0002] An elevator is a vertical lift powered by an electric motor and equipped with a box-shaped cabin, used to carry people or goods in multi-story buildings. With the rapid development of the national economy and the construction of high-rise buildings in cities and towns, the use of traction passenger elevators has become increasingly popular, and safe and comfortable riding has become a basic need for the general public.

[0003] According to the Chinese patent with the publication number of "CN113353758B", an anti-falling elevator car structure is disclosed, including an overall car structure, the overall car structure includes a passenger elevator main car and a car limiting guide rail, a car traction frame is fixed on the outer side of the passenger elevator main car, the car limiting guide rail is arranged in parallel on the outer side of the car traction frame, a traction bottom hanging box is fixed on the top of the car traction frame, and anti-falling plate installation grooves are evenly opened on the left and right sides of the car traction frame, anti-falling plates are arranged on both sides of the car traction frame of the present invention, and a protective supporting plate matched with the anti-falling plate is arranged on the inner side of the car limiting guide rail, when the traction wire rope breaks, it will cause the protective collar to fall off, and then the safety wire rope will naturally fall, and the anti-falling plate without the safety wire rope towing will open under the action of the anti-falling plate torsion spring, and be supported on the protective supporting plate, so as to support and prevent the entire car overall structure from falling, and the practicality is stronger, and the safety of the elevator during use is improved;

[0004] It can be seen from the above structure that when the traction wire rope of the above device breaks, it will cause the protective collar to fall off, and then the safety wire rope will naturally drop. The anti-fall plate that loses the traction of the safety wire rope will open under the action of the anti-fall plate torsion spring and be supported on the protective support plate, which plays a role in supporting and preventing the entire structure of the car from falling off. It is more practical and improves the safety of the elevator during use. However, the above structure will generate a large impact force at the moment when the anti-fall plate contacts the protective support plate, which may cause injuries to the people inside the passenger elevator due to their legs being unable to withstand the large impact, so that the installation performance of the elevator needs to be improved. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a passenger elevator anti-falling device to solve the above problems.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A passenger elevator anti-falling device comprises a shaft, a passenger elevator cabin is arranged inside the shaft, both sides of the passenger elevator cabin are fixedly connected with a main anti-falling component, the main anti-falling component comprises a protective groove arranged on both sides of the passenger elevator cabin, both sides of the passenger elevator cabin are located on the surrounding sides of the protective groove and are fixedly connected with a slide frame, the interior of the protective groove is fixedly connected with an electric push rod, the other end of the electric push rod is fixedly connected with a push plate, both sides of the interior of the shaft are provided with a slide groove, the slide groove and the slide frame are slidably connected to each other, the interior of the slide groove is fixedly connected with a second resistance block, the other end of the push plate is fixedly connected with a first resistance block, the first resistance block and the second resistance block are movably connected to each other, the outer side of the passenger elevator cabin is fixedly connected with a speed sensor, and the lower end of the passenger elevator cabin is fixedly connected with an auxiliary anti-falling component.

[0008] Furthermore, as a preferred technical solution, the auxiliary anti-fall component includes a motor arranged at the lower end of the passenger elevator cabin, the output shaft of the motor is fixedly connected with a bidirectional screw, the lower end of the passenger elevator cabin is fixedly connected with two sets of clamping plates, the surfaces of the clamping plates are provided with screw holes, the bidirectional screws and the screw holes are threadedly connected to each other, and clamping grooves are provided on opposite sides of the clamping plates.

[0009] Furthermore, as a preferred technical solution, limiting grooves are provided on both sides of the shaft, limiting blocks are fixedly connected on both sides of the passenger elevator cabin, fixing rods are fixedly connected inside the limiting grooves, the fixing rods and limiting holes are slidably plugged into each other, the clamping plate is located inside the limiting groove, and the fixing rod is located inside the clamping groove.

[0010] Furthermore, as a preferred technical solution, the upper end of the passenger elevator cabin is fixedly connected with a mounting groove, the interior of the mounting groove is fixedly connected with a ventilation fan, the mounting groove runs through the interior of the passenger elevator cabin, and the upper end of the passenger elevator cabin is fixedly connected with a dustproof net, and the dustproof net wraps the mounting groove.

[0011] Furthermore, as a preferred technical solution, buffer rods are fixedly connected to both sides of the lower end of the passenger elevator cabin, the other end of the buffer rods is fixedly connected to the bottom plate, the lower end of the passenger elevator cabin is fixedly connected to a shock-absorbing spring, the other end of the shock-absorbing spring is fixedly connected to the bottom plate, a circular hole is opened inside the buffer rod, the lower end of the passenger elevator cabin is fixedly connected to a damper, the other end of the damper passes through the circular hole and is fixedly connected to the bottom plate, the buffer rod includes a sleeve arranged at the lower end of the passenger elevator cabin, the interior of the sleeve is fixedly connected to a buffer spring, the other end of the buffer spring is fixedly connected to a movable rod, and the movable rod and the sleeve rod are slidably plugged into each other.

[0012] In summary, the utility model mainly has the following beneficial effects:

[0013] First, by setting up the main anti-falling component, when the elevator suddenly falls during use, the speed sensor first detects the abnormal speed of the elevator and then pushes the push plate out of the slide frame through the electric push rod. When the push plate extends out of the slide hole under the push of the electric push rod, it enters the slide groove, so that when the push plate contacts the inside of the slide groove, friction is generated to slow down the elevator speed. At the same time, under the action of the first resistance block and the second resistance block, the friction between the push plate and the inside of the slide groove can be increased, so that when the friction is greater than the elevator gravity, the effect of fixing the elevator can be achieved, thereby achieving the anti-falling effect;

[0014] Secondly, by setting up the auxiliary anti-fall component, when the main anti-fall component is started, the speed sensor can also detect the speed, and the motor starts, so that the bidirectional screws at both ends of the motor rotate when the motor starts. The rotation of the bidirectional screws will bring the clamping plates closer together under the action of the screw holes, so that when the clamping plates move together, the auxiliary anti-fall component and the fixed rod will be tightly clamped under the action of the clamping groove, so that after the clamping groove and the fixed rod are clamped, the motor can be further prevented from falling, so that the main anti-fall component and the auxiliary anti-fall component can prevent the elevator from falling when in use, and at the same time, the main anti-fall component and the auxiliary anti-fall component will not generate impact force when in use to avoid injuries to people inside the passenger elevator cabin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the passenger elevator cabin of the utility model;

[0017] Figure 3 The utility model Figure 2 A side view structural schematic diagram of;

[0018] Figure 4 It is a schematic diagram of the bottom structure of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the buffer rod of the utility model;

[0020] Figure 6 The utility model Figure 4 Schematic diagram of the enlarged structure of part A.

[0021] Figure numerals: 1. shaft, 2. passenger elevator cabin, 3. main anti-falling component, 31. protective groove, 32. slide frame, 33. electric push rod, 34. push plate, 35. first resistance block, 36. slide groove, 37. second resistance block, 4. auxiliary anti-falling component, 41. motor, 42. bidirectional screw, 43. screw hole, 44. clamping plate, 45. clamping groove, 5. limit groove, 6. limit block, 7. fixing rod, 8. buffer rod, 81. sleeve, 82. buffer spring, 83. movable rod, 9. shock-absorbing spring, 10. bottom plate, 11. mounting groove, 12. ventilation fan, 13. dustproof net, 14. damper, 15. round hole. DETAILED DESCRIPTION

[0022] Example

[0023] refer to Figures 1 to 6 A passenger elevator anti-falling device of the present embodiment includes a shaft 1, a passenger elevator cabin 2 is arranged inside the shaft 1, and main anti-falling components 3 are fixedly connected on both sides of the passenger elevator cabin 2. The main anti-falling components 3 include protective grooves 31 arranged on both sides of the passenger elevator cabin 2, and both sides of the passenger elevator cabin 2 are fixedly connected with sliding frames 32 on the surrounding sides of the protective grooves 31, and the interior of the protective grooves 31 is fixedly connected with an electric push rod 33, and the other end of the electric push rod 33 is fixedly connected with a push plate 34, and sliding grooves 36 are opened on both sides of the interior of the shaft 1. The sliding grooves 36 and the sliding frames 32 are slidably connected to each other, and the interior of the sliding grooves 36 is fixedly connected with a second resistance block 37, and the other end of the push plate 34 is fixedly connected with a first resistance block 35, and the first resistance block 35 and the second resistance block 37 are movably connected to each other. A speed sensor is fixedly connected to the outer side of the passenger elevator cabin 2, and an auxiliary anti-falling component 4 is fixedly connected to the lower end of the passenger elevator cabin 2.

[0024] refer to Figure 6 The auxiliary anti-falling component 4 includes a motor 41 arranged at the lower end of the passenger elevator cabin 2, and the output shaft of the motor 41 is fixedly connected with a bidirectional screw 42, and the lower end of the passenger elevator cabin 2 is fixedly connected with two sets of clamping plates 44, and the surfaces of the clamping plates 44 are provided with screw holes 43, and the bidirectional screws 42 and the screw holes 43 are threadedly connected to each other, and the opposite sides of the clamping plates 44 are provided with clamping grooves 45; when the motor 41 is started, the bidirectional screws 42 at both ends of the motor 41 rotate when the motor 41 is started, and the clamping plates 44 move together under the action of the screw holes 43 when the bidirectional screws 42 rotate, so that when the clamping plates 44 move together, the auxiliary anti-falling component 4 and the fixing rod 7 are tightly clamped under the action of the clamping grooves 45, so that after the clamping of the clamping grooves 45 and the fixing rod 7 is completed, the motor 41 can be further prevented from falling.

[0025] refer to Figure 1Limiting grooves 5 are provided on both sides of the shaft 1, limiting blocks 6 are fixedly connected on both sides of the passenger elevator cabin 2, fixing rods 7 are fixedly connected inside the limiting grooves 5, the fixing rods 7 and the limiting holes are slidably plugged into each other, the clamping plate 44 is located inside the limiting grooves 5, and the fixing rods 7 are located inside the clamping grooves 45; the setting of the limiting grooves 5 and the limiting blocks 6 makes the passenger elevator cabin 2 more stable during operation.

[0026] refer to Figure 1 and Figure 3 The upper end of the passenger elevator cabin 2 is fixedly connected with a mounting groove 11, and the interior of the mounting groove 11 is fixedly connected with a ventilation fan 12. The mounting groove 11 runs through the interior of the passenger elevator cabin 2. The upper end of the passenger elevator cabin 2 is fixedly connected with a dustproof net 13, and the dustproof net 13 wraps the mounting groove 11. The ventilation fan 12 can be provided to ventilate the interior of the passenger elevator cabin 2 to avoid the situation where the passenger elevator cabin 2 fails and cannot open the door, resulting in lack of oxygen for the internal personnel.

[0027] refer to Figure 3 and Figure 5 , buffer rods 8 are fixedly connected to both sides of the lower end of the passenger elevator cabin 2, and the other end of the buffer rods 8 is fixedly connected to the bottom plate 10, and the lower end of the passenger elevator cabin 2 is fixedly connected to a shock absorbing spring 9, and the other end of the shock absorbing spring 9 is fixedly connected to the bottom plate 10. A circular hole 15 is opened inside the buffer rod 8, and a damper 14 is fixedly connected to the lower end of the passenger elevator cabin 2. The other end of the damper 14 passes through the circular hole 15 and is fixedly connected to the bottom plate 10. The buffer rod 8 includes a sleeve 81 arranged at the lower end of the passenger elevator cabin 2, and a buffer spring 82 is fixedly connected to the inside of the sleeve 81. The other end of the impact spring 82 is fixedly connected to a movable rod 83, and the movable rod 83 and the sleeve rod are slidably plugged into each other; when the passenger elevator cabin 2 reaches the lowermost end, it first contacts with the bottom plate 10 so that under the action of the buffer rod 8 and the shock-absorbing spring 9, the shaking generated when the passenger elevator cabin 2 contacts the bottom of the shaft 1 can be reduced, and at the same time, under the action of the damper 14, the elastic force of the shock-absorbing spring 9 can be offset, and the bottom plate 10 mainly provides a protective effect for the auxiliary anti-falling component 4 to avoid the auxiliary anti-falling component 4 from contacting the bottom of the shaft 1 and causing damage to the auxiliary anti-falling component 4.

[0028] Principle and advantages of use: When in use, when the elevator suddenly falls, first the speed sensor detects the abnormal speed of the elevator and then pushes the push plate 34 out of the slide frame 32 through the electric push rod 33. When the push plate 34 extends out of the slide hole under the push of the electric push rod 33, it enters the slide groove 36, so that when the push plate 34 contacts the inside of the slide groove 36, friction is generated to slow down the elevator speed. At the same time, under the action of the first resistance block 35 and the second resistance block 37, the friction between the push plate 34 and the inside of the slide groove 36 can be increased, so that when the friction is greater than the gravity of the elevator, the effect of fixing the elevator can be achieved, thereby preventing the elevator from falling. When the main anti-fall component 3 is started, the speed sensor can also detect the speed. When the motor 41 is started, the bidirectional screws 42 at both ends of the motor 41 rotate when the motor 41 is started. When the bidirectional screw 42 rotates, the clamping plates 44 will move together under the action of the screw hole 43, so that the clamping plates 4 When the elevator 4 moves toward each other, the auxiliary anti-falling assembly 4 and the fixing rod 7 are tightly clamped under the action of the clamping groove 45, so that after the clamping groove 45 and the fixing rod 7 are clamped, the motor 41 can be further prevented from falling, so that the main anti-falling assembly 3 and the auxiliary anti-falling assembly 4 can avoid the elevator from falling when in use, and when the passenger elevator cabin 2 reaches the lowest end, it first contacts with the bottom plate 10, so that under the action of the buffer rod 8 and the shock-absorbing spring 9, the shaking generated when the passenger elevator cabin 2 contacts the bottom of the shaft 1 can be reduced, and at the same time, under the action of the damper 14, the elastic force of the shock-absorbing spring 9 can be offset, and the bottom plate 10 mainly protects the auxiliary anti-falling assembly 4 to avoid the auxiliary anti-falling assembly 4 from contacting the bottom of the shaft 1 and causing damage to the auxiliary anti-falling assembly 4, and the ventilation fan 12 can be arranged to ventilate the interior of the passenger elevator cabin 2 to avoid the situation where the passenger elevator cabin 2 fails and cannot open the door, resulting in oxygen deficiency for the internal personnel.

Claims

1. A passenger elevator anti-fall device, characterized in that: The present invention comprises a shaft, wherein a passenger elevator cabin is arranged inside the shaft, and main anti-falling components are fixedly connected on both sides of the passenger elevator cabin, and the main anti-falling components comprise protective grooves arranged on both sides of the passenger elevator cabin, and sliding frames are fixedly connected on both sides of the passenger elevator cabin, and an electric push rod is fixedly connected inside the protective groove, and a push plate is fixedly connected at the other end of the electric push rod, and sliding grooves are provided on both sides inside the shaft, and the sliding grooves and the sliding frames are slidingly connected to each other, and a second resistance block is fixedly connected inside the sliding grooves, and a first resistance block is fixedly connected at the other end of the push plate, and the first resistance block and the second resistance block are movably connected to each other, a speed sensor is fixedly connected to the outer side of the passenger elevator cabin, and an auxiliary anti-falling component is fixedly connected at the lower end of the passenger elevator cabin.

2. A passenger elevator anti-falling device according to claim 1, characterized in that: The auxiliary anti-falling component includes a motor arranged at the lower end of the passenger elevator cabin, the output shaft of the motor is fixedly connected with a bidirectional screw, the lower end of the passenger elevator cabin is fixedly connected with two sets of clamping plates, the surfaces of the clamping plates are provided with screw holes, the bidirectional screws and the screw holes are threadedly connected to each other, and the opposite sides of the clamping plates are provided with clamping grooves.

3. A passenger elevator anti-falling device according to claim 2, characterized in that: Limiting grooves are provided on both sides of the shaft, limiting blocks are fixedly connected on both sides of the passenger elevator cabin, fixing rods are fixedly connected inside the limiting grooves, the fixing rods and the limiting holes are slidably plugged into each other, the clamping plates are located inside the limiting grooves, and the fixing rods are located inside the clamping grooves.

4. A passenger elevator anti-falling device according to claim 1, characterized in that: The upper end of the passenger elevator cabin is fixedly connected with a mounting groove, the interior of the mounting groove is fixedly connected with a ventilation fan, and the mounting groove runs through the interior of the passenger elevator cabin.

5. A passenger elevator anti-falling device according to claim 4, characterized in that: The upper end of the passenger elevator cabin is fixedly connected with a dustproof net, and the dustproof net wraps the installation groove.

6. A passenger elevator anti-falling device according to claim 1, characterized in that: Buffer rods are fixedly connected to both sides of the lower end of the passenger elevator cabin, and the other ends of the buffer rods are fixedly connected to the bottom plate. A shock-absorbing spring is fixedly connected to the lower end of the passenger elevator cabin, and the other end of the shock-absorbing spring is fixedly connected to the bottom plate. A circular hole is opened inside the buffer rod, and a damper is fixedly connected to the lower end of the passenger elevator cabin, and the other end of the damper passes through the circular hole and is fixedly connected to the bottom plate.

7. A passenger elevator anti-falling device according to claim 6, characterized in that: The buffer rod comprises a sleeve arranged at the lower end of the passenger elevator cabin, a buffer spring is fixedly connected inside the sleeve, a movable rod is fixedly connected to the other end of the buffer spring, and the movable rod and the sleeve rod are slidably plugged into each other.

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