Elevator car protection device

Abstract

The utility model discloses an elevator car protection device, relates to the elevator car protection technical field, and concretely comprises an upper support structure, a lower support structure and a positioning assembly, the upper support structure is arranged on the elevator car top, the lower support structure is arranged on the elevator car bottom, the positioning assembly is arranged on the elevator shaft inner wall, and the positioning assembly is arranged on the elevator shaft inner wall. The positioning assembly comprises a signal receiver and a signal emitter, two sets of positioning grooves are formed in the shaft wall of each layer of the elevator shaft in the vertical direction, and the signal receiver is arranged in an inner cavity of the positioning groove located on the lower portion. According to the elevator car protection device, through the arrangement of the upper supporting structure and the lower supporting structure, the upper supporting structure and the lower supporting structure can support and protect the elevator car at the same time, the phenomenon that the elevator car falls suddenly is avoided, the stopping reliability of the elevator car is improved, the position of the elevator car can be adjusted through the lower supporting structure, and therefore the elevator car is protected. The elevator car can be located behind the elevator landing door, and trapped people can be rescued conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator car protection, in particular to an elevator car protection device. Background Art

[0002] Elevators are widely used in modern society. Elevator cars can be used to conveniently transport people, pets, or goods to their respective destination floors. To ensure the safety of elevators during operation, elevators are equipped with anti-fall systems. The anti-fall systems use speed limiters, safety clamps, and buffers at the bottom to stop the car. The safety clamps use the friction between them and the guide rails to force the elevator car to stop on the guide rails. However, after the elevator car stops, its position cannot be changed. When the elevator car is misaligned with the floor, the rescue difficulty will be increased. Moreover, relying solely on the friction between the safety clamps and the guide rails to stop the elevator has low reliability and is prone to sudden falls. Based on this, the present application proposes an elevator car protection device. Utility Model Content

[0003] The utility model provides an elevator car protection device, which solves the problem proposed in the above background technology that when a fault occurs, the elevator car stops and its position cannot be changed, which increases the difficulty of rescue, and relies on the friction between the safety clamp and the guide rail to stop the elevator car, which has low reliability and is prone to sudden falls.

[0004] The utility model provides the following technical solution: an elevator car protection device, comprising an upper supporting structure, a lower supporting structure, and a positioning assembly, wherein the upper supporting structure is arranged on the top of the elevator car, the lower supporting structure is arranged on the bottom of the elevator car, the positioning assembly is arranged on the inner wall of the elevator shaft, the positioning assembly includes a signal receiver and a signal transmitter, and two groups of positioning grooves are arranged in the vertical direction on the shaft wall of each floor of the elevator shaft, the elevator hall door is located between the two groups of positioning grooves, and the signal receiver is arranged in the inner cavity of the lower positioning groove;

[0005] The upper support structure includes a fixed plate fixedly connected to the top of the elevator car, and the lower support structure includes an electric telescopic rod 1 fixedly connected to the bottom of the elevator car, another fixed plate fixedly connected to the end of the output shaft of the electric telescopic rod 1, and a buffer pad fixedly connected to the bottom of the other fixed plate; both sides of the fixed plate and the other fixed plate are connected to a plug rod adapted to the positioning groove through the electric telescopic rod 2, and the plug rod is movably connected to the fixed plate. The plug rod is movably connected to the fixed plate, and a signal transmitter is provided in the middle of the end of the plug rod in the lower support structure away from the electric telescopic rod 2;

[0006] A limit ring is fixedly connected to the inner cavity of the positioning groove located at the bottom, the signal receiver is located on the side of the limit ring away from the elevator car, and a pressure alarm is provided on the limit ring.

[0007] Preferably, the fixing plate includes two support plates, and the two support plates are connected by a guide block. A guide hole is provided in the middle of the guide block, and the insertion rod is movably connected to the inner cavity of the guide hole.

[0008] Preferably, the end of the output shaft of the second electric telescopic rod is fixedly connected to a support rod, and the insertion rod is fixedly connected to the support rod.

[0009] Preferably, the alarm sounds of two pressure alarms adjacent to each other in the vertical direction are different.

[0010] Preferably, a first conductive contact is provided on the limiting ring, and a second conductive contact is fixedly connected to one end of the insertion rod away from the second electric telescopic rod.

[0011] Preferably, the outer surface of the insertion rod is wrapped with an insulating pad, and the second conductive contact is embedded in the insulating pad; and the upper support structure and the lower support structure are both equipped with a rechargeable power supply.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The elevator car protection device, through the arrangement of the upper supporting structure and the lower supporting structure, can simultaneously support and protect the elevator car, thereby preventing the elevator car from suddenly falling and improving the reliability of the elevator car stagnation. In addition, the lower supporting structure can adjust the position of the elevator car so that the elevator car can be located behind the elevator hall door, making it easier to rescue trapped people.

[0014] 2. The elevator car protection device can locate the lower support structure through the setting of the positioning component; and can sound an alarm through the setting of the pressure alarm, so that rescue personnel can arrive in time and know the floor where the elevator car is located, thereby improving the rescue speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the connection between the upper supporting structure and the lower supporting structure of the utility model and the elevator car;

[0016] Figure 2 For the utility model structure Figure 1 Front view schematic diagram;

[0017] Figure 3 This is a schematic diagram of the structure and use of the utility model;

[0018] Figure 4 For the utility model structure Figure 3 Schematic diagram on the back;

[0019] Figure 5This is a schematic diagram of the signal receiver and limit ring of the utility model structure;

[0020] Figure 6 This is an exploded schematic diagram of another fixed plate of the structure of the utility model.

[0021] In the figure: 1. Support plate; 2. Electric telescopic rod 1; 3. Buffer pad; 4. Insert rod; 5. Support rod; 6. Guide block; 7. Electric telescopic rod 2; 8. Conductive contact 2; 9. Positioning slot; 10. Signal receiver; 11. Limiting ring; 12. Signal transmitter; 13. Conductive contact 1; 14. Pressure alarm. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides an elevator car protection device, comprising an upper support structure, a lower support structure, and a positioning assembly. The upper support structure is disposed at the top of the elevator car, and the lower support structure is disposed at the bottom of the elevator car. The upper support structure includes a fixed plate fixedly connected to the top of the elevator car, and the lower support structure includes an electric telescopic rod 2 fixedly connected to the bottom of the elevator car, another fixed plate fixedly connected to the end of the output shaft of the electric telescopic rod 2, and a buffer pad 3 fixedly connected to the bottom of the other fixed plate. The electric telescopic rod 2 can be extended or retracted to change the position of the other fixed plate connected thereto. The buffer pad 3 can be made of rubber and, through the provision of the buffer pad 3, can provide a buffering function, thereby protecting the elevator car.

[0024] The fixed plate includes two support plates 1, and the two support plates 1 are connected by a guide block 6. A guide hole is provided in the middle of the guide block 6. A plug rod 4 is movably connected to the inner cavity of the guide hole. The plug rod 4 is fixedly connected to the support plate 1 through an electric telescopic rod 2 7. Through the setting of the electric telescopic rod 2 7, the extension and contraction of the electric telescopic rod 2 7 can change the position of the plug rod 4, and the end of the output shaft of the electric telescopic rod 2 7 is fixedly connected to the support rod 5, and the plug rod 4 is fixedly connected to the support rod 5.

[0025] The positioning assembly is mounted on the inner wall of the elevator shaft. When in use, it locates the elevator car using the assembly. Each floor of the shaft has a positioning assembly. The assembly includes a signal receiver 10 and a signal transmitter 12. Two sets of positioning slots 9 are vertically positioned on the shaft wall of each floor. The elevator hall door is located between the two sets of positioning slots 9, with the positioning assembly located within the lower positioning slot 9.

[0026] A limit ring 11 is fixedly connected to the inner cavity of the positioning groove 9 located below, and a signal receiver 10 is located on the side of the limit ring 11 away from the elevator car. A pressure alarm 14 is provided on the limit ring 11. A signal transmitter 12 adapted to the signal receiver 10 is provided in the middle of the end of the insertion rod 4 in the lower supporting structure away from the electric telescopic rod 27. The insertion rod 4 can be positioned by using the signal transmitter 12 and the signal receiver 10. When the signal emitted by the signal transmitter 12 is received by the signal receiver 10, the insertion rod 4 is aligned with the positioning groove 9. Under the action of the electric telescopic rod 27, the insertion rod 4 can be inserted into the inner cavity of the positioning groove 9.

[0027] As can be seen from the above description, the positioning structure can achieve positioning of the lower support structure. When the insertion rod 4 in the lower support structure is inserted into the positioning slot 9, the electric telescopic rod 2 7 contracts, and the electric telescopic rod 2 7 drives the elevator car downward. When the electric telescopic rod 2 7 returns to its initial state, the insertion rod 4 in the upper support structure is aligned with the positioning slot 9 located above, and the insertion rod 4 in the upper support structure can be inserted into the positioning slot 9. The elevator car is supported by both the upper and lower support structures, preventing the elevator car from falling. At this time, the elevator car is located behind the elevator shaft door, improving the convenience of rescue. In addition, during the insertion process of the insertion rod 4, the limit ring 11 can limit the insertion rod 4 to prevent the insertion rod 4 from damaging the signal receiver 10. Under the action of the squeezing force, the pressure alarm 14 can alarm, facilitating timely rescue.

[0028] The alarm sounds of the pressure alarms 14 in two adjacent positioning components are different. Rescue personnel can timely lock the location of the elevator car based on the alarm sounds, thereby increasing the rescue speed.

[0029] A conductive contact 13 is provided on the limiting ring 11, and a conductive contact 2 8 is fixedly connected to the end of the insertion rod 4 away from the electric telescopic rod 2 7. The outer surface of the insertion rod 4 is wrapped with an insulating pad, and the conductive contact 2 8 is embedded in the insulating pad; the upper support structure and the lower support structure are both equipped with a rechargeable power supply. Through the setting of the conductive contact 13 and the conductive contact 2 8, the conductive contact 2 8 is electrically connected to the rechargeable power supply. When the conductive contact 13 is in contact with the conductive contact 2 8, the rechargeable power supply can be charged, thereby preventing the protective device from being affected by power failure.

[0030] The electrical components involved in this application are all existing technologies. Those skilled in the art are familiar with their connection methods. Through these people, all the electrical components in this application are connected to their corresponding power supplies through wires, and according to actual conditions, appropriate controllers are selected to meet control requirements. The specific connections and control sequences are described below. The electrical connections between the electrical components are completed in a sequential working order. The detailed connection methods are well known in the art. The following mainly introduces the working principles and processes, and no further explanation of electrical control is given.

[0031] To sum up: when the elevator car protection device is in use, when the elevator car anti-fall system works and makes the elevator car stop, the electric telescopic rod 2 extends, the electric telescopic rod 2 drives the other fixed plate to move downward, and the signal transmitter 12 on the insertion rod 4 works. When the signal receiver receives the signal sent by the signal transmitter 12, the electric telescopic rod 2 stops extending, and the electric telescopic rod 2 7 in the lower supporting structure extends, and the electric telescopic rod 2 7 drives the insertion rod 4 to move until the insertion rod 4 is inserted into the positioning groove 9 aligned with it, until the insertion rod 4 is tightly fitted with the limit ring 11, the pressure alarm 14 sounds an alarm under the action of pressure, and the contact between the conductive contact 2 8 and the conductive contact 1 13 makes the rechargeable power supply energized. The elevator car is supported by the lower supporting structure to avoid the elevator car from falling suddenly. The elevator is released from stagnation, the electric telescopic rod 2 contracts, and the electric telescopic rod 2 drives the elevator car to move downward. After the electric telescopic rod 2 is reset, the elevator car anti-fall system re-fixes the position of the elevator car, and the insertion rod 4 in the upper supporting structure is inserted into the positioning groove 9 located above under the action of the electric telescopic rod 2 7. The upper supporting structure and the lower supporting structure protect the elevator car at the same time to avoid the elevator car from falling suddenly, and adjust the position of the elevator car so that the elevator car is behind the elevator hall door to facilitate rescue.

[0032] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology and will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An elevator car protection device, comprising an upper support structure, a lower support structure and a positioning assembly, characterized in that: The upper support structure is arranged on the top of the elevator car, the lower support structure is arranged on the bottom of the elevator car, the positioning assembly is arranged on the inner wall of the elevator shaft, the positioning assembly includes a signal receiver (10) and a signal transmitter (12), and two groups of positioning grooves (9) are arranged in the vertical direction on the shaft wall of each floor of the elevator shaft, the elevator hall door is located between the two groups of positioning grooves (9), and the inner cavity of the positioning groove (9) located at the lower side is provided with a signal receiver (10); The upper support structure includes a fixed plate fixedly connected to the top of the elevator car, and the lower support structure includes an electric telescopic rod (2) fixedly connected to the bottom of the elevator car, another fixed plate fixedly connected to the end of the output shaft of the electric telescopic rod (2), and a buffer pad (3) fixedly connected to the bottom of the other fixed plate; both sides of the fixed plate and the other fixed plate are connected to a plug rod (4) adapted to the positioning groove (9) through the electric telescopic rod (7), the plug rod (4) is movably connected to the fixed plate, and the plug rod (4) is movably connected to the fixed plate. A signal transmitter (12) is provided in the middle of the plug rod (4) in the lower support structure away from one end of the electric telescopic rod (7); A limit ring (11) is fixedly connected to the inner cavity of the positioning groove (9) located below, the signal receiver (10) is located on the side of the limit ring (11) away from the elevator car, and a pressure alarm (14) is provided on the limit ring (11).

2. The elevator car protection device according to claim 1, characterized in that: The fixing plate comprises two support plates (1), the two support plates (1) are connected via a guide block (6), a guide hole is provided in the middle of the guide block (6), and the insertion rod (4) is movably connected to the inner cavity of the guide hole.

3. The elevator car protection device according to claim 1, characterized in that: The output shaft end of the second electric telescopic rod (7) is fixedly connected to a support rod (5), and the insertion rod (4) is fixedly connected to the support rod (5).

4. The elevator car protection device according to claim 1, characterized in that: The alarm sounds of two pressure alarms (14) adjacent to each other in the vertical direction are different.

5. The elevator car protection device according to claim 1, characterized in that: The limiting ring (11) is provided with a conductive contact 1 (13), and the end of the insertion rod (4) away from the electric telescopic rod 2 (7) is fixedly connected with the conductive contact 2 (8).

6. The elevator car protection device according to claim 5, characterized in that: The outer surface of the insertion rod (4) is wrapped with an insulating pad, and the second conductive contact (8) is embedded in the insulating pad; the upper support structure and the lower support structure are both equipped with a rechargeable power supply.

Images