An emergency rescue system for elevator car failure

Abstract

A car elevator failure emergency rescue system is applied to an elevator car having two car top wheels, wherein the two car top wheels are mounted on the car frame upper beam, and steel wire ropes are wound around the two car top wheels. The system includes a jacking device fixedly connected to the car frame upper beam, and the jacking device includes a jacking wheel for jacking up the portion of the steel wire rope between the two car top wheels, a wheel frame for mounting the jacking wheel, and a jacking drive mechanism fixedly connected to the car frame upper beam and connected to the wheel frame. The system can lift the car to a level floor in the event of a car elevator failure and the self-service rescue system is unable to function normally, thereby rescuing trapped occupants.

Description

Technical Field

[0001] The present invention relates to the field of elevator rescue, and in particular to an emergency rescue system for a car elevator failure. Background Art

[0002] Elevator malfunctions often trap people. These can be caused by power outages, control system failures, safety circuit or door lock circuit failures, or other human factors. For elevators with machine rooms, manual winching is often used for emergency rescue. However, during this process, the winching handwheel must be properly installed and securely fixed to prevent it from slipping. The brake releaser must gradually release the force as the winch operator applies it, and must constantly monitor the winch operator to prevent them from losing control or getting injured. Furthermore, rescuers must quickly and accurately determine whether to winch up or down, and flexibly handle unexpected situations encountered during the winch. Manual winching rescue personnel require extensive experience, professional knowledge, and formal training. Furthermore, when manual winching fails, there is no practical external rescue system for situations where the elevator's built-in rescue system becomes locked and inoperable. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the present invention provides an emergency rescue system for a car elevator failure, which can lift the car to the level floor when the car elevator fails and the self-service rescue system cannot work normally, thereby rescuing trapped people.

[0004] A car elevator failure emergency rescue system is applied to an elevator car with two car top wheels, wherein the two car top wheels are installed on the upper beam of the car frame, and steel wire ropes are wound around the two car top wheels. The system includes a jacking device fixedly connected to the upper beam of the car frame, and the jacking device includes a jacking wheel for jacking up the part of the steel wire rope between the two car top wheels, a wheel frame for mounting the jacking wheel, and a jacking drive mechanism fixedly connected to the upper beam of the car frame and connected to the wheel frame.

[0005] Preferably, the lifting drive mechanism includes a screw mechanism and a screw control motor. The screw mechanism includes a screw seat fixedly connected to the upper beam of the car frame, a screw vertically arranged on the screw seat, and a screw slide that moves along the length direction of the screw is provided on the screw. The screw is driven by the screw control motor, and the wheel frame is connected to the screw slide.

[0006] There are two lifting wheels, and a lower pressure wheel is provided between the two lifting wheels. The lower pressure wheel is used to press the portion of the wire rope between the two lifting wheels downward.

[0007] The lower pressure wheel is driven by the above-mentioned jacking drive mechanism, and the screw is also provided with a screw slide 2 that moves along the length direction of the screw, and the moving direction of the screw slide 2 is opposite to the moving direction of the screw slide 1. The lower pressure wheel is installed on the screw slide 2 through the wheel frame 2; the screw includes a threaded segment 1 for installing the screw slide 1 and a threaded segment for installing the screw slide 2, and the spiral directions of the threaded segment 1 and the threaded segment are opposite.

[0008] The screw control motor is arranged on the side of the screw seat and is not higher than the screw seat. The screw control motor is connected to the screw through a bevel gear transmission mechanism. The bevel gear transmission mechanism includes a driving bevel gear arranged on the output shaft of the screw control motor and a driven bevel gear arranged on the screw and meshing with the driving bevel gear.

[0009] The first screw slide is slidably arranged on the screw seat, and the second screw slide is slidably arranged on the screw seat.

[0010] The upper beam of the car frame includes a front beam and a rear beam; the screw seat includes a front mounting plate connected to the front beam and a rear mounting plate connected to the rear beam, and the front mounting plate and the rear mounting plate are provided with vertical guide rails for installing the screw slide 1 and the screw slide 2.

[0011] In summary, the present invention has the following beneficial effects:

[0012] 1: The present invention can lift the car to the level floor when the car elevator fails and the self-service rescue system fails to work normally, thereby rescuing trapped people. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of the emergency rescue system for a car elevator failure;

[0014] Figure 2 It is a structural diagram of the jacking device;

[0015] Figure 3 This is a schematic diagram of the explosion of the jacking device;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0017] The present invention will be further described below through specific embodiments with reference to the accompanying drawings.

[0018] Example: Figure 1-4As shown, a car elevator failure emergency rescue system is applied to an elevator car with two car top wheels 01, wherein the two car top wheels 01 are installed on the car frame upper beam 02, and the two car top wheels 01 are wound with steel wire ropes 03.

[0019] The emergency rescue system includes a lifting device 1 fixedly connected to the car frame upper beam 02. The lifting device 1 includes a lifting wheel 11, a wheel frame 12 for mounting the lifting wheel 11, and a lifting drive mechanism 13 fixedly connected to the car frame upper beam 02 and connected to the wheel frame 12. The lifting wheel 11 is arranged below the steel wire rope 03 located between the two car top wheels 01 and is used to lift the portion of the steel wire rope 03 between the two car top wheels 01 upward. The lifting drive mechanism 13 provides power for the operation of the lifting wheel 11. When the elevator car malfunctions, the lifting drive mechanism 13 is activated, causing the lifting wheel 11 to rise, lifting the portion of the steel wire rope 03 between the two car top wheels 01 upward, and lifting the car to the level floor, thereby rescuing trapped people.

[0020] The lifting drive mechanism 13 can be a common cylinder. In this embodiment, the lifting drive mechanism 13 includes a screw mechanism 131 and a screw control motor 132. The screw mechanism 131 includes a screw seat 1311 fixedly connected to the upper beam 02 of the car frame, and a screw 1312 vertically arranged on the screw seat 1311. The screw 1312 is provided with a screw slide 1313 that can move along the length direction of the screw 1312. The screw slide 1313 is slidably matched with the screw seat 1311, that is, the screw slide 1313 is slidably arranged on the screw seat 1311, and the wheel frame 12 is connected to the screw slide 1313. The screw 1312 is driven by the screw control motor 132. The screw control motor 132 can accurately control the rotation angle of the screw, thereby accurately controlling the moving distance of the screw slide 1313, and finally accurately lifting the car to the level floor.

[0021] Furthermore, there are two lifting wheels 11, and a lower pressure wheel 14 is provided between the two lifting wheels 11. The lower pressure wheel 14 is used to press downward the portion of the wire rope 03 between the two lifting wheels 11. The lower pressure wheel 14 and the lifting wheels 11 act together on the wire rope to lift the car to the level floor. The advantage is that the lifting wheels 11 do not need to move upward a large distance to lift the car to the level floor. Accordingly, the entire lifting device does not need to be much higher than the car frame upper beam 02, which does not affect the maintenance work on the car roof.

[0022] Preferably, the above-mentioned lower pressure wheel 14 is driven by the above-mentioned lifting drive mechanism 13. To achieve this function, the screw rod 1312 is also provided with a screw slide 2 1314 that moves along the length direction of the screw, and the moving direction of the screw slide 2 1314 is opposite to the moving direction of the screw slide 1 1313. The screw slide 2 1314 is slidably matched with the screw seat 1311, that is, the screw slide 2 1314 is slidably set on the screw seat 1311, and the above-mentioned lower pressure wheel 14 is installed on the screw slide 2 1314 through the wheel frame 2 15. The movement directions of the above-mentioned screw slide 2 1314 and screw slide 1 1313 make the structure of the screw 1312 as follows: the screw 1312 includes a threaded segment 1 for installing the screw slide 1 1313 and a threaded segment for installing the screw slide 2 1314, and the spiral directions of the threaded segment 1 and the threaded segment are opposite. When the screw 1312 rotates, the screw slide 2 1314 and the screw slide 1 1313 move in opposite directions.

[0023] The above-mentioned method of driving the movement of the screw slide 2 1314 and the screw slide 1 1313 by the rotation of the same screw only requires the configuration of a screw control motor 132 that drives one screw, which simplifies the entire jacking device and prevents the entire jacking device from being too large to affect the car top maintenance work.

[0024] In order to prevent the entire jacking device from being too high, the screw control motor 132 is arranged on the side of the screw seat 1311 and is not higher than the screw seat 1311. The screw control motor 132 is installed on the upper beam 02 of the car frame through the motor bracket 132-1. The screw control motor 132 is connected to the screw 1312 through a bevel gear transmission mechanism. The bevel gear transmission mechanism includes a driving bevel gear 133 arranged on the output shaft of the screw control motor 132, and a driven bevel gear 134 arranged on the screw 1312 and meshing with the driving bevel gear 133.

[0025] The car frame upper beam 02 includes a front beam and a rear beam spaced apart from each other, with the car top wheel 01 located in the space between the front beam and the rear beam. The screw rod seat 1311 includes a front mounting plate 13111 connected to the front beam, a rear mounting plate 13112 connected to the rear beam, and a screw rod mounting plate 13113 connecting the front mounting plate 13111 and the rear mounting plate 13112. Both the front mounting plate 13111 and the rear mounting plate 13112 are provided with vertical guide rails 13114 for mounting the screw rod slide 1 1313 and the screw rod slide 2 1314. The outer sides of the front mounting plate 13111 and the rear mounting plate 13112 are both provided with a reinforcing plate 2 connected to the car frame upper beam 02. A support block 135 for mounting the output shaft of the control motor 132 is connected between the front mounting plate 13111 and the rear mounting plate 13112. The output shaft of the control motor 132 passes through the support block 135. The support block 135 is as close as possible to the active bevel gear 133. The support block 135 makes the output shaft of the control motor 132 more stable.

[0026] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements to the technical solution of the present invention made by a person of ordinary skill in the art without departing from the design concept of the present invention shall fall within the scope of protection of the present invention. The technical content for which protection is sought in the present invention is fully set forth in the claims.

Claims

1. A car elevator failure emergency rescue system, applied to an elevator car with two car top wheels (01), wherein: Two car top wheels (01) are installed on the upper beam (02) of the car frame, and steel wire ropes (03) are wound around the two car top wheels (01). The invention is characterized in that the invention comprises a lifting device (1) fixedly connected to the upper beam (02) of the car frame, the lifting device (1) comprising a lifting wheel (11) for lifting the portion of the steel wire rope (03) between the two car top wheels (01) upward, a wheel frame (12) for installing the lifting wheel (11), and a lifting drive mechanism (13) fixedly connected to the upper beam (02) of the car frame and connected to the wheel frame (12); the lifting drive mechanism (13) comprises a screw mechanism (131) and a screw control motor (132), the screw mechanism (131) comprises a screw seat (132) fixedly connected to the upper beam (02) of the car frame, 11), a screw rod (1312) is vertically arranged on the screw rod seat (1311), a screw rod slide (1313) is provided on the screw rod (1312) and moves along the length direction of the screw rod (1312), the screw rod (1312) is driven by the screw rod control motor (132), and the wheel frame (12) is connected to the screw rod slide (1313); the number of the lifting wheels (11) is two, and a lower pressure wheel (14) is provided between the two lifting wheels (11), and the lower pressure wheel (14) is used to press the portion of the wire rope (03) between the two lifting wheels (11) downward; the lower pressure wheel (14) is driven by the above-mentioned lifting drive mechanism (13), and a screw rod slide (1314) is also provided on the screw rod (1312) and moves along the length direction of the screw rod. The moving direction of the second screw slide (1314) is opposite to the moving direction of the first screw slide (1313), and the lower pressure wheel (14) is installed on the second screw slide (1314) through the second wheel frame (15); the screw (1312) includes a threaded section 1 for installing the first screw slide (1313) and a threaded section for installing the second screw slide (1314), and the spiral directions of the threaded section 1 and the threaded section are opposite.

2. The elevator car failure emergency rescue system according to claim 1, characterized in that: The screw control motor (132) is arranged on the side of the screw seat (1311) and is not higher than the screw seat (1311). The screw control motor (132) is connected to the screw (1312) through a bevel gear transmission mechanism. The bevel gear transmission mechanism includes a driving bevel gear (133) arranged on the output shaft of the screw control motor (132) and a driven bevel gear (134) arranged on the screw (1312) and meshing with the driving bevel gear (133).

3. The elevator car failure emergency rescue system according to claim 1, characterized in that: The first screw slide (1313) is slidably arranged on the screw seat (1311), and the second screw slide (1314) is slidably arranged on the screw seat (1311).

4. The elevator car failure emergency rescue system according to claim 3, characterized in that: The upper beam (02) of the car frame includes a front beam and a rear beam; the screw rod seat (1311) includes a front mounting plate (13111) connected to the front beam, a rear mounting plate (13112) connected to the rear beam, and a screw rod mounting plate (13113) connecting the front mounting plate (13111) and the rear mounting plate (13112); the front mounting plate (13111) and the rear mounting plate (13112) are provided with vertical guide rails (13114) for mounting the screw rod slide 1 (1313) and the screw rod slide 2 (1314).

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