Auxiliary safety system for preventing accidental falling of elevator cars in a shaft

Abstract

The present application relates to elevator technology field, specifically relates to prevent accidental falling into the lane elevator car auxiliary safety system, including the buffer mechanism arranged in the inner wall of the lane both sides and the sling tensioning mechanism arranged in the lane top both sides, the sling tensioning mechanism is connected with the top surface both sides of the car in the lane, it adopts the buffer mechanism arranged in the inside of the lane and the sling tensioning mechanism of the lane top, utilizes the sling tensioning mechanism when the elevator loses speed, the tensioning function of the sling tensioning mechanism forms the back pull, and the buffer mechanism is several elastic triangular telescopic head and forms multi-stage delay, it has the back pull of the top and the bottom of the continuous touch delay when the elevator appears the accident, forms the safety mechanism of double delay, ensures the life safety of the person in the elevator car.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and more specifically to an auxiliary safety system for elevator cars to prevent accidental falls into elevator shafts. Background Technology

[0002] With the development of urbanization, residential buildings are generally high-rise buildings, and some office buildings also adopt high-rise architecture to maximize land conservation and meet the living and working needs of the ever-growing urban population. Therefore, elevators are widely used as a convenient tool for moving between floors. An elevator is a permanent transportation device that serves several specific floors within a building, with its car running on at least two rigid tracks perpendicular to the horizontal plane or with an angle of inclination less than 15° to the vertical. An elevator generally includes a machine room, a shaft and pit, a car, and landings. The car is the elevator component that transports passengers and goods and is the working part of the elevator. The car consists of a car frame and a car body. The main function of the weight balancing system is to relatively balance the weight of the car, keeping the weight difference between the car and the counterweight within limits during elevator operation, ensuring normal traction transmission. The system mainly consists of a counterweight and a weight compensation device. The function of the electric drive system is to provide power and control the elevator speed. The electric drive system consists of a traction motor, a power supply system, a speed feedback device, and a motor speed control device.

[0003] In traditional elevators, the car serves as the passenger compartment, moving up and down the corridor. The elevator is controlled by a weight balancing system and an electric drive system, and access to and from floors is achieved through an electrical control system and a door system.

[0004] However, in the event of an accident, the elevator car may stall and fall, posing a threat to the lives of the passengers inside and creating a safety hazard. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing an auxiliary safety system for elevator cars to prevent accidental falls into the aisle.

[0006] The elevator car auxiliary safety system for preventing accidental falls into the tunnel according to the present invention includes a buffer mechanism installed in the inner walls on both sides of the tunnel and a suspension rope tensioning mechanism installed on both sides of the top of the tunnel; the suspension rope tensioning mechanism is connected to both sides of the top surface of the car in the tunnel.

[0007] Furthermore, the rope tensioning mechanism includes rotating drums disposed on both sides of the top of the roadway, with tensioning ropes disposed on the rotating drums; a spring return mechanism and a tensioning mechanism are disposed inside the rotating drums.

[0008] Furthermore, limit ring platforms are provided at both ends of the rotating drum.

[0009] Furthermore, the buffer mechanism includes several buffer holes disposed on both sides of the inner wall of the tunnel; a buffer chamber is disposed inside the side wall of the tunnel; several horizontal telescopic cylinders are disposed on the inner wall of the buffer chamber, the several horizontal telescopic cylinders are connected to the outer side of the telescopic plate, and several buffer protrusions are disposed on the inner side of the telescopic plate, the buffer protrusions cooperating with the buffer holes on the inner wall of the tunnel.

[0010] Furthermore, vertical reinforcing ribs are provided between the cylinder bodies of adjacent horizontal telescopic cylinders.

[0011] Furthermore, the buffer protrusion includes a horizontal sleeve, the width of which is greater than the diameter of the buffer hole. The outer surface of the horizontal sleeve is open. A horizontal protrusion is provided inside the horizontal sleeve, and the horizontal protrusion is connected to a spring. The spring is connected to a triangular telescopic head.

[0012] Furthermore, the inclined surface of the triangular telescopic head faces the top of the tunnel.

[0013] Furthermore, a speed sensor is installed on the top of the car.

[0014] The beneficial effects of this invention are as follows: The elevator car auxiliary safety system for preventing accidental falls into the aisle described in this invention adopts a buffer mechanism installed on the inner side of the aisle and a suspension rope tensioning mechanism at the top of the aisle. When the elevator stalls, the tensioning function of the suspension rope tensioning mechanism generates a pull-back force, and the several elastic triangular telescopic heads of the buffer mechanism form a multi-stage delay. It has a double-delay safety mechanism that can form the pull-back force at the top and the continuous contact delay at the bottom when the elevator falls unexpectedly, thus ensuring the safety of passengers in the elevator car. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate the invention and form part of this application, are not intended to unduly limit the invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 yes Figure 1 Enlarged view of part A;

[0018] Figure 3 yes Figure 2 Enlarged view of part B;

[0019] Figure 4 This is a schematic diagram of the rotating drum in this invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Lane; 2. Car; 3. Electric drive system; 4. Hoisting rope tensioning mechanism; 41. Rotary drum; 42. Spring return mechanism; 43. Tensioning mechanism; 44. Tensioning hoisting rope; 45. Limiting ring platform; 5. Buffer mechanism; 51. Horizontal telescopic cylinder; 52. Telescopic plate; 53. Buffer protrusion; 53. Horizontal sleeve; 532. Horizontal protrusion; 533. Spring; 534. Triangular telescopic head; 54. Buffer hole; 55. Vertical reinforcing rib; 6. Speed ​​sensor; 7. PLC controller. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0023] like Figures 1-4 As shown in the figure, the elevator car auxiliary safety system for preventing accidental falls into the tunnel described in this specific embodiment includes a buffer mechanism 5 installed in the inner walls on both sides of the tunnel 1 and a rope tensioning mechanism 4 installed on both sides of the top of the tunnel 1; the rope tensioning mechanism 4 is connected to both sides of the top surface of the car 2 in the tunnel 1.

[0024] Furthermore, the rope tensioning mechanism 4 includes rotating drums 41 disposed on both sides of the top of the tunnel 1, and a tensioning rope 44 disposed on the rotating drums 41; a spring return mechanism 42 and a tensioning mechanism 43 are disposed inside the rotating drums 41.

[0025] Furthermore, the two ends of the rotating drum 41 are provided with limiting ring platforms 45.

[0026] Furthermore, the buffer mechanism 5 includes a plurality of buffer holes 54 disposed on both sides of the inner wall of the tunnel 1; a buffer chamber is disposed in the side wall of the tunnel 1; a plurality of horizontal telescopic cylinders 51 are disposed on the inner wall of the buffer chamber, the plurality of horizontal telescopic cylinders 51 are connected to the outer side of the telescopic plate 52, and a plurality of buffer protrusions 53 are disposed on the inner side of the telescopic plate 52, the buffer protrusions 53 cooperating with the buffer holes 54 on the inner wall of the tunnel 1.

[0027] Furthermore, vertical reinforcing ribs 55 are provided between the cylinder bodies of adjacent horizontal telescopic cylinders 51.

[0028] Furthermore, the buffer protrusion 53 includes a horizontal sleeve 531, the width of which is greater than the diameter of the buffer hole 54, the outer side of which is open, and a horizontal protrusion 532 is provided inside the horizontal sleeve 531. The horizontal protrusion 532 is connected to a spring 533, and the spring 533 is connected to a triangular telescopic head 534.

[0029] Furthermore, the inclined surface of the triangular telescopic head 534 faces the top of the tunnel 1.

[0030] Furthermore, a speed sensor 6 is installed on the top of the car 2.

[0031] The working principle of this design is as follows:

[0032] This design includes buffer mechanisms 5 installed on the inner walls of both sides of the tunnel 1 and rope tensioning mechanisms 4 installed on both sides of the top of the tunnel 1. A conventional electric drive system 3 is installed at the top of the tunnel 1, which is connected to the car and controls the car's movement within the tunnel.

[0033] The suspension rope tensioning mechanism 4 is connected to both sides of the top surface of the elevator car 2 within the tunnel 1. The suspension rope tensioning mechanism 4 includes rotating drums 41 positioned on both sides of the top of the tunnel 1, with tensioning suspension ropes 44 mounted on the drums 41. A spring return mechanism 42 and a tensioning mechanism 43 are installed inside the rotating drums 41. In operation, when the elevator car is running normally, it moves up and down uniformly, so the tensioning suspension ropes 44 on the rotating drums 41 move up and down synchronously with the car. When the car moves upward, the spring return force in the spring return mechanism 42 assists in the synchronous retraction of the tensioning suspension ropes 44 on the rotating drums 41. This is similar to the spring retraction device on a vacuum cleaner cord, where the cord retracts into the vacuum cleaner during retraction. Therefore, in a uniformly moving elevator car, the spring return mechanism 42 can work in conjunction with the tensioning suspension ropes 44 to move synchronously with the car.

[0034] When the elevator car falls unexpectedly in the tunnel, it is not in a uniform running state but in an accelerating stall state. Therefore, the tensioning mechanism 43 starts to work, and the tensioning rope 44 works to form a pullback, similar to the pullback of a car seat belt, thereby slowing down the falling speed of the elevator car and protecting the lives of the passengers inside the elevator car.

[0035] Simultaneously, speed sensor 6 detects an abnormal elevator speed and sends a signal to PLC controller 7 within the control system. PLC controller 7 then controls buffer mechanism 5 to operate synchronously. Several horizontal telescopic cylinders 51 in buffer mechanism 5 operate synchronously, pushing telescopic plate 52 to move. Telescopic plate 52 drives several buffer protrusions 53 on it to pass through buffer holes 54, causing the triangular telescopic heads 534 of the buffer protrusions 53 to extend into the tunnel. At this time, the inclined surface of the triangular telescopic head 534 faces the top of tunnel 1.

[0036] When the bottom surfaces of the elevator car contact the triangular telescopic heads 534 of the buffer protrusions 53, the weight of the elevator car causes the triangular telescopic heads 534 to be pressed back into the horizontal sleeve 531 by the spring 533 after contact. The contact between the triangular telescopic heads 534 and the elevator car slows down the descent of the elevator car. This design incorporates several triangular telescopic heads 534 on both sides of the inner wall of the passageway, thus creating a multi-stage delay, greatly mitigating the descent of the elevator car and ultimately ensuring the safety of the passengers inside.

[0037] In this design, vertical reinforcing ribs 55 are provided between the cylinder bodies of adjacent horizontal telescopic cylinders 51 to ensure the safety of the horizontal telescopic cylinders 51 and improve their pressure resistance.

[0038] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made in accordance with the features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. An auxiliary safety system for preventing an unintended drop of an elevator car in a shaft, characterized by: The buffer mechanism is arranged on the inner wall of the two sides of the tunnel, and the rope tensioning mechanism is arranged on the two sides of the top of the tunnel. The rope tensioning mechanism comprises a rotating drum arranged on the two sides of the top of the tunnel, and the rotating drum is provided with a tensioning rope. The two ends of the rotating drum are provided with a limiting ring table. The buffer mechanism comprises a plurality of buffer holes arranged on the two sides of the inner wall of the tunnel. The inner wall of the buffer warehouse is provided with a plurality of horizontal telescopic cylinders, and the outer side of the telescopic plate is connected with the horizontal telescopic cylinders.

2. The elevator car assisted safety system to prevent an unintended drop of a hoistway according to claim 1, characterized by: The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders.

3. The elevator car assisted safety system to prevent accidental falling into a shaft according to claim 1, characterized in that: The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders.

4. The elevator car assisted safety system to prevent accidental falling into a shaft according to claim 1, characterized in that: The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are connected with the horizontal telescopic cylinders. The horizontal telescopic cylinders are

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