A self-rescue device and escape method for a traction elevator failure

Abstract

The present invention belongs to the field of elevator safety, specifically, a traction elevator fault self-rescue escape device and its escape method, the shell is installed on one side of the elevator traction machine main shaft end wheel, the shell is respectively installed with a clutch device, a drag device and a control system, a leveling sensor and a weighing device are respectively installed on the car, a control button is provided in the car, the leveling sensor, the control button, the weighing device and the door machine are connected to the control system through accompanying cables, and the control system is connected to the brake of the elevator through cables; the electric push rod and the reduction motor are respectively connected to the control system, the drag device is connected to the output end of the electric push rod, the driving wheel is abutted or separated with the main shaft end wheel of the elevator through the drive of the electric push rod, and when abutting with the main shaft end wheel, the main shaft end wheel is driven by the reduction motor to drive the forward or reverse rotation of the main shaft end wheel, thereby driving the car to rise and fall. The present invention can achieve full coverage of elevator operating conditions, and is suitable for the selection and adoption of traction elevators of various specifications and models.

Description

Technical Field

[0001] The invention belongs to the field of elevator safety, in particular to a traction elevator failure self-rescue and escape device and an escape method thereof. Background Art

[0002] Traction elevators are the most widely installed and used type of elevators. When a traction elevator stops due to an external power outage or quality problems, the passengers in the car are actually trapped. In this case, passengers can only passively wait for professionals to rescue them from the outside. Being in a relatively small car space for a long time will have adverse effects on the physical and mental health of passengers. Some passengers may even take wrong actions such as "pushing the door" to save themselves blindly, causing damage to the equipment and even personal injury accidents.

[0003] At present, the main problem of the self-rescue devices available on the market is that they can only work under specific working conditions and cannot cover all working conditions of elevator operation (for example, the weight of the trapped passenger and the weight of the elevator counterweight are considered equal). In practical applications, it is often the case that self-rescue cannot be achieved if the specific working conditions are deviated. Summary of the invention

[0004] In order to solve the above-mentioned problem of passengers caused by a traction elevator stopping failure and realize self-rescue in all working conditions, the purpose of the present invention is to provide a traction elevator failure self-rescue escape device and its escape method. The traction elevator failure self-rescue escape device can realize self-rescue and safe escape of passengers in the elevator when the traction elevator control system fails and the passengers are trapped in the car.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] The self-rescue and escape device of the present invention comprises a leveling sensing sensor, a clutch device, a dragging device, a control system, a weighing device and a shell, wherein the shell is installed on one side of the main shaft end wheel of the elevator traction machine, and the clutch device, the dragging device and the control system are respectively installed on the shell, the leveling sensing sensor and the weighing device are respectively installed on the car, and a control button is provided in the car, the leveling sensing sensor, the control button, the weighing device and the door machine of the elevator are all connected to the control system through accompanying cables, and the control system is connected to the brake of the elevator through cables; the power source in the clutch device and the power source in the dragging device are respectively connected to the control system, and the dragging device is connected to the output end of the power source in the clutch device, and the actuator in the dragging device is driven by the power source in the clutch device to abut or separate from the main shaft end wheel of the elevator, and when abutting with the main shaft end wheel, the main shaft end wheel is driven by the power source in the dragging device to rotate forward or reverse, thereby driving the car to rise and fall.

[0007] Wherein: the power source in the clutch device is an electric push rod, which is installed on the housing and has an output end connected to the traction device.

[0008] The clutch device also includes a guide mechanism, which includes two groups of guide plates arranged up and down, each group of guide plates has two guide plates, and guide slots are provided on opposite sides of the two guide plates in each group. The dragging device is guided by the guide slots during movement.

[0009] The power source in the traction device is a reduction motor, the actuator in the traction device is a driving wheel, the output end of the reduction motor is connected to the driving wheel, and the reduction motor and the driving wheel are driven to move by the power source in the clutch device.

[0010] The traction device also includes a motor mounting frame, which is connected to the power source output end of the clutch device, the reduction motor is fixed on the motor mounting frame, and the side of the drive wheel facing the main shaft end wheel is exposed from the motor mounting frame.

[0011] The control system includes an uninterruptible power supply UPS, a PLC, a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an AC contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2. The power source in the clutch device is an electric push rod, and the power source in the traction device is a reduction motor; the uninterruptible power supply UPS supplies power to the switching power supply T1, the switching power supply T2, the time delay relay SJJ, and the AC contactor BZJ through power supply cables, the switching power supply T1 supplies power to the elevator's brake, and the switching power supply T2 supplies power to the PLC, the electromagnetic relay J1, the electromagnetic relay J2, the electric push rod and the reduction motor.

[0012] The PLC is connected to the leveling induction sensor, the weighing device, and the control button respectively; the first, second, third, and fourth output terminals of the PLC are connected to the first normally closed contact of the electromagnetic relay J1, the coil of the electromagnetic relay J1, the coil of the electromagnetic relay J2, and the coil of the AC contactor BZJ respectively; the first normally closed contact of the electromagnetic relay J1 is connected to the door machine;

[0013] The uninterruptible power supply UPS is connected to the input end of the switching power supply T1 and the input end of the switching power supply T2 respectively;

[0014] The coil of the time delay relay SJJ is connected between the two input ends of the switching power supply T1, and the first normally open contact of the electromagnetic relay J1 is connected between the uninterruptible power supply UPS and the input end of the switching power supply T1; the first normally open contact of the AC contactor BZJ, the normally closed contact of the time delay relay SJJ, the diode, and the brake coil are connected in series between the positive and negative output ends of the switching power supply T1;

[0015] An electric push rod circuit, a reduction motor circuit and a weighing device circuit are connected in parallel between the positive and negative output terminals of the switching power supply T2;

[0016] The electric push rod circuit includes a second normally closed contact of the electromagnetic relay J1, an electric push rod power supply input terminal in the clutch device, and a third normally closed contact of the electromagnetic relay J1 which are connected in series in sequence;

[0017] The reduction motor circuit comprises a second normally open contact of an AC contactor BZJ, a first normally closed contact of an electromagnetic relay J2, a power supply input terminal of the reduction motor, and a second normally closed contact of the electromagnetic relay J2 which are connected in series in sequence;

[0018] The weighing device circuit is a weighing device power input terminal.

[0019] The method for escaping from a traction elevator failure self-rescue escape device of the present invention is as follows:

[0020] When the elevator fails and stops, the trapped person in the car presses the control button, and the control system controls the brake to release, controls the power source of the clutch device to push the dragging device so that the actuator of the dragging device abuts against the main shaft end wheel, and controls the power source of the dragging device to drive the actuator to drive the main shaft end wheel to rotate forward or reverse, thereby driving the car to move up and down; the forward or reverse rotation of the main shaft end wheel is determined by the weight of the trapped person in the car measured by the weighing device and the weight of the elevator counterweight. When the control system receives the result that the weight of the trapped person measured by the weighing device is greater than the elevator counterweight, the actuator of the dragging device is controlled to drive The main shaft end wheel is driven to reverse, so that the car descends; when the control system receives the signal that the weight of the trapped person measured by the weighing device is less than the elevator counterweight, the actuator of the traction device is controlled to drive the main shaft end wheel to rotate forward, so that the car rises; when the car runs to the leveling position, the control system receives the leveling signal output by the leveling sensor, controls the brake to close, controls the power source of the clutch device to pull the traction device so as to separate the actuator of the traction device from the main shaft end wheel, controls the power source of the traction device to stop working, and the car stops running. The control system controls the door machine to open the door, so that the trapped person can rescue himself.

[0021] Among them: the trapped person can press the control button in a point-by-point manner. Each time the control button is pressed, the car runs and stops. The button is pressed multiple times until the control system receives the leveling signal output by the leveling sensor. The car reaches the leveling position and the control system controls the brake to close.

[0022] The control system includes an uninterruptible power supply UPS, a PLC, a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an AC contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2. The power source in the clutch device is an electric push rod, and the power source in the traction device is a reduction motor;

[0023] When the elevator is lightly loaded, that is, the weight of the trapped person measured by the weighing device is less than the elevator counterweight, the signal of the control button is fed back to the PLC, and the weighing device has no signal input to the PLC, so that the first normally closed contact, the second normally closed contact, and the third normally closed contact of the electromagnetic relay J1 are disconnected, and the first normally open contact is energized, so that the first normally open contact and the second normally open contact of the AC contactor are energized, and the delay relay SJJ coil is energized to start timing, and the 24V voltage of the switching power supply T2 is output to the electric push rod and the reduction motor, and the 110V voltage of the switching power supply T1 is Output to the brake coil, the brake opens within the specified time, and the reduction motor starts to drive forward. When the specified time is exceeded, the normally closed contact of the delay relay SJJ is disconnected, and the brake 110v is automatically cut off; when the signal of the leveling sensor is transmitted to the PLC, the electromagnetic relay J1 coil and the AC contactor BZJ coil are de-energized, the reduction motor 301 stops rotating, the brake coil is de-energized, and the electric push rod is reset. After 1s, the first output terminal of the PLC outputs the door opening signal Y0, and the door machine is opened through the first normally closed contact of the electromagnetic relay J1;

[0024] When the elevator is overloaded, that is, the weight of the trapped person measured by the weighing device is greater than the elevator counterweight, the signal of the control button is fed back to the PLC, and the weighing device trigger signal is input to the PLC, so that the first normally closed contact, the second normally closed contact, and the third normally closed contact of the electromagnetic relay J1 are disconnected, and the first normally open contact is attracted, so that the first normally closed contact and the second normally closed contact of the electromagnetic relay J2 are disconnected, and the first normally open contact and the second normally open contact of the AC contactor BZJ are attracted, and the delay relay SJJ coil is energized to start timing, and the 24V voltage of the switching power supply T2 is output to the electric push rod and the reduction motor. The 110v voltage of the power supply T1 is applied to the brake coil. The brake opens within the specified time, and the reduction motor starts to drive in reverse. When the specified time is exceeded, the normally closed contact of the delay relay SJJ is disconnected, and the brake 110v is automatically cut off. When the signal of the leveling sensor is transmitted to the PLC, the electromagnetic relay J1 coil, the electromagnetic relay J2 coil and the AC contactor BZJ coil are de-energized, the reduction motor stops rotating, the brake coil is de-energized, and the electric push rod is reset. After 1s, the first output terminal of the PLC outputs the door opening signal Y0, and the door machine is opened through the first normally closed contact of the electromagnetic relay J1.

[0025] The advantages and positive effects of the present invention are:

[0026] 1. The present invention has the characteristics of compact structure, safety and reliability, low manufacturing and maintenance cost, wide adaptability, and the ability to work independently without relying on the elevator control system. It can also achieve full coverage of elevator operating conditions and is suitable for the selection and adoption of traction elevators of various specifications and models.

[0027] 2. The present invention enables elevator passengers trapped in the car to master self-rescue and escape from the traction elevator failure after observing concise instructions, so that elevator passengers trapped in the car can escape from the failure in time through self-rescue, thereby making elevator riding safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the self-rescue and escape device of the present invention;

[0029] Figure 2 It is a three-dimensional structural schematic diagram of the clutch device, the dragging device and the housing in the self-rescue and escape device of the present invention;

[0030] Among them: 1 is a leveling sensor, 2 is a clutch device, 201 is an electric push rod, 202 is a guide mechanism, 2021 is a guide plate, 2022 is a guide slide, 3 is a drag device, 301 is a reduction motor, 302 is a motor mounting frame, 303 is a driving wheel, 4 is a spindle end wheel, 5 is a brake, 6 is a cable, 7 is a control system, 8 is a weighing device, 9 is a door machine, 10 is a control button, 11 is an accompanying cable, 12 is a power supply cable, 13 is a shell, and 14 is a car;

[0031] Figure 3 One of the circuit diagrams of the present invention;

[0032] Figure 4 This is the second circuit diagram of the present invention;

[0033] Figure 5 This is the third circuit diagram of the present invention. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] like Figure 1 , Figure 2As shown, the self-rescue device of the present invention includes a leveling sensor 1, a clutch device 2, a traction device 3, a control system 7, a weighing device 8 and a shell 13, wherein the shell 13 is installed on one side of the main shaft end wheel 4 of the elevator traction machine, and the clutch device 2, the traction device 3 and the control system 7 are respectively installed on the shell 13, the leveling sensor 1 and the weighing device 8 are respectively installed on the elevator car 14, and a control button 10 is provided in the car 14. The leveling sensor 1, the control button 10, the weighing device 8 and the elevator door machine 9 are all connected to the control system 7 through an accompanying cable 11, and the control system 7 is connected to the elevator brake 5 through a cable 6; the weighing device 8 of this embodiment is a weighing sensor, and the control button 10 of this embodiment has a protective cover designed to prevent accidental touch. The power source in the clutch device 2 and the power source in the traction device 3 are respectively connected to the control system 7. The traction device 3 is connected to the output end of the power source in the clutch device 2. The actuator in the traction device 3 is driven by the power source in the clutch device 2 to abut or separate from the main shaft end wheel 4 of the elevator, and when abutting with the main shaft end wheel 4, the main shaft end wheel 4 is driven by the power source in the traction device 3 to rotate forward or reverse, thereby driving the car 14 to rise and fall.

[0036] The power source in the clutch device 2 of this embodiment is an electric push rod 201, which is fixed on the housing 13, and the output end is connected to the drag device 3. The clutch device 2 of this embodiment also includes a guide mechanism 202, which includes two groups of guide plates 2021 arranged up and down, each group of guide plates 2021 has two, and each group of two guide plates 2021 has guide slots 2022 on opposite sides thereof, and the drag device 3 is guided by the guide slots 2022 during the movement.

[0037] The power source in the dragging device 3 of this embodiment is a reduction motor 301, the actuator in the dragging device 3 is a driving wheel 303, and the dragging device 3 also includes a motor mounting frame 302; the motor mounting frame 302 is connected to the output end of the electric push rod 201, and the upper and lower sides of the motor mounting frame 302 are respectively accommodated in the guide slots 2022 between the upper and lower guide plates 2021, and the motor mounting frame 302 moves along the guide slots 2022 under the drive of the electric push rod 201; the reduction motor 301 is fixed on the motor mounting frame 302, and the output end of the reduction motor 301 is connected to the driving wheel 303, and the reduction motor 301 and the driving wheel 303 are driven to move together with the motor mounting frame 302 by the electric push rod 201. The side of the driving wheel 303 facing the main shaft end wheel 4 is exposed by the motor mounting frame 302, and then abuts against the main shaft end wheel 4.

[0038] like Figures 3 to 5As shown, the control system 7 of this embodiment is used to control the brake 5 to perform the release and closing actions, and at the same time control the engagement and separation of the clutch device 2, and control the start and stop of the traction device 3, as well as the opening and closing actions of the door machine 9; the control system 7 includes an uninterruptible power supply UPS, a PLC, a switching power supply T1, a switching power supply T2, a delay relay SJJ, an AC contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2. The uninterruptible power supply UPS supplies power to the switching power supply T1, the switching power supply T2, the delay relay SJJ, and the AC contactor BZJ through a power supply cable 12. The switching power supply T1 supplies power to the brake 5 of the elevator, and the switching power supply T2 supplies power to the PLC, the electromagnetic relay J1, the electromagnetic relay J2, the electric push rod 201 and the reduction motor 301. The uninterruptible power supply UPS of this embodiment is a charging power supply.

[0039] The PLC is connected to the leveling sensor 1, the weighing device 8, and the control button 10 respectively. The first, second, third, and fourth output terminals of the PLC are connected to the first normally closed contact of the electromagnetic relay J1, the coil of the electromagnetic relay J1, the coil of the electromagnetic relay J2, and the coil of the AC contactor BZJ respectively; the first normally closed contact of the electromagnetic relay J1 is connected to the door machine;

[0040] The uninterruptible power supply UPS is respectively connected to the input end of the switching power supply T1 and the input end of the switching power supply T2;

[0041] The coil of the time delay relay SJJ is connected between the two input terminals of the switching power supply T1, and the first normally open contact of the electromagnetic relay J1 is connected between the uninterruptible power supply UPS and the input terminal of the switching power supply T1; the first normally open contact of the AC contactor BZJ, the normally closed contact of the time delay relay SJJ, the diode, and the brake coil are connected in series between the positive and negative output terminals of the switching power supply T1;

[0042] An electric push rod circuit, a reduction motor circuit and a weighing device circuit are connected in parallel between the positive and negative output terminals of the switching power supply T2;

[0043] The electric push rod circuit includes a second normally closed contact of the electromagnetic relay J1, a power supply input terminal of the electric push rod 201, and a third normally closed contact of the electromagnetic relay J1 which are connected in series in sequence;

[0044] The reduction motor circuit includes a second normally open contact of the AC contactor BZJ, a first normally closed contact of the electromagnetic relay J2, a power supply input terminal of the reduction motor, and a second normally closed contact of the electromagnetic relay J2 which are connected in series in sequence;

[0045] The weighing device circuit is the power input terminal of the weighing device 8 .

[0046] The method for escaping from a traction elevator failure self-rescue escape device of the present invention is as follows:

[0047] The trapped person in the car 14 opens the protective cover and presses the control button 10, the control system 7 controls the brake 5 to release, controls the electric push rod 201 to push the dragging device 3 so that the driving wheel 303 abuts against the main shaft end wheel 4, and controls the reduction motor 301 to drive the driving wheel 303 to drive the main shaft end wheel 4 to rotate forward or reverse, thereby driving the car 14 to move up and down; the forward or reverse rotation of the main shaft end wheel 4 is determined by the weight of the trapped person in the car 14 measured by the weighing device 8 and the weight of the elevator counterweight. When the control system 7 receives the weight of the trapped person measured by the weighing device 8 that is greater than the elevator counterweight, the driving wheel 303 is controlled to drive the main shaft The end wheel 4 rotates in reverse to make the car 14 descend; when the control system 7 receives the weight of the trapped person measured by the weighing device 8 and is less than the elevator counterweight, the driving wheel 303 is controlled to drive the main shaft end wheel 4 to rotate forward to make the car 14 rise; when the car 14 runs to the leveling position, the control system 7 receives the leveling signal output by the leveling sensor 1, controls the brake 5 to close, controls the electric push rod 201 to pull the dragging device 3 to separate the driving wheel 303 from the main shaft end wheel 4, controls the reduction motor 301 to stop working, the car 14 stops running, and the control system 7 controls the door machine 9 to open the door, so that the trapped person can save himself. The trapped person in the car 14 can press the control button 10 in a point-to-point manner. Each time the control button 10 is pressed, the car 14 runs and stops. Press it multiple times until the control system 7 receives the leveling signal output by the leveling sensor 1, the car 14 runs to the leveling position, and the control system 7 controls the brake 5 to close.

[0048] The PLC electrical schematic diagram, the switching power supply T1 electrical schematic diagram, and the switching power supply T2 electrical schematic diagram of this embodiment are respectively as follows: Figure 3 , Figure 4 , Figure 5 As shown, Figure 3 FX2N is PLC, FM is buzzer, UPSN and UPSL represent live and neutral wires of uninterruptible power supply respectively, ZQ1 and ZQ2 represent leads, 103~109, 111, 201~203 and other three-digit numbers are used to represent the connection points, among which 104 and 103 are connected to the 24V positive and negative power supply output by T2 respectively, X0~X5 represent input points, Y0~Y3 represent PLC output contacts respectively, and are connected to external devices through COM, such as J1, J2, BZJ; Figure 5 In the figure, the 1, 5, and 9 pins of J1 on the left are normally closed contacts, normally open contacts, and common terminals respectively, and the 2, 6, and 10 pins of J1 on the right are normally closed contacts, normally open contacts, and common terminals respectively; the 2, 4, and 6 pins of J2 on the left are normally closed contacts, normally open contacts, and common terminals respectively, and the 1, 3, and 5 pins of J2 on the right are normally closed contacts, normally open contacts, and common terminals respectively; DCT represents an electric push rod, DCD represents a reduction motor, and ZZJ represents a load-carrying device. The working principle of this embodiment is specifically as follows:

[0049] When the elevator is lightly loaded, that is, the weight of the trapped person measured by the weighing device 8 is less than the elevator counterweight, the signal of the control button 10 is fed back to the PLC, and the weighing device 8 has no signal input to the PLC, so that the first normally closed contact, the second normally closed contact, and the third normally closed contact of the electromagnetic relay J1 are disconnected, and the first normally open contact is energized, so that the first normally open contact and the second normally open contact of the AC contactor BZJ are energized, and the delay relay SJJ coil is energized to start timing, and the 24V voltage of the switching power supply T2 is output to the electric push rod 201 and the reduction motor 301, and the 110v of the switching power supply T1 is The voltage is output to the brake coil. The brake 5 opens within the specified time, and the reduction motor 301 starts to drive forward. When the specified time is exceeded, the normally closed contact of the delay relay SJJ is disconnected, and the brake 110v is automatically cut off. When the signal of the leveling sensor 1 is transmitted to the PLC, the electromagnetic relay J1 coil and the AC contactor BZJ coil are de-energized, the reduction motor 301 stops rotating, the brake coil is de-energized, and the electric push rod 201 is reset. After 1s, the first output terminal of the PLC outputs the door opening signal Y0, and the door machine 9 is opened through the first normally closed contact of the electromagnetic relay J1.

[0050] When the elevator is overloaded, that is, the weight of the trapped person measured by the weighing device 8 is greater than the elevator counterweight, the signal of the control button 10 is fed back to the PLC, and the weighing device 8 triggers the signal input to the PLC, so that the first normally closed contact, the second normally closed contact, and the third normally closed contact of the electromagnetic relay J1 are disconnected, and the first normally open contact is attracted, so that the first normally closed contact and the second normally closed contact of the electromagnetic relay J2 are disconnected, and the first normally open contact and the second normally open contact of the AC contactor BZJ are attracted, and the delay relay SJJ coil is energized to start timing, and the 24V voltage of the switching power supply T2 is output to the electric push rod 201 and the reduction motor 301, and the switching power is turned on. The 110v voltage of source T1 is applied to the brake coil, and the brake 5 is opened within the specified time, and the reduction motor 301 starts to drive in reverse. When the specified time is exceeded, the normally closed contact of the delay relay SJJ is disconnected, and the brake 110v is automatically cut off. When the signal of the leveling sensor 1 is transmitted to the PLC, the electromagnetic relay J1 coil, the electromagnetic relay J2 coil and the AC contactor BZJ coil are de-energized, the reduction motor 301 stops rotating, the brake coil is de-energized, and the electric push rod 201 is reset. After 1s, the first output terminal of the PLC outputs the door opening signal Y0, and the door machine 9 is opened through the first normally closed contact of the electromagnetic relay J1.

Claims

1. A self-rescue device for a traction elevator failure, characterized in that: The invention comprises a leveling sensor (1), a clutch device (2), a traction device (3), a control system (7), a weighing device (8) and a housing (13), wherein the housing (13) is installed on one side of the main shaft end wheel (4) of the elevator traction machine, the clutch device (2), the traction device (3) and the control system (7) are respectively installed on the housing (13), the leveling sensor (1) and the weighing device (8) are respectively installed on the car (14), and a control button (10) is provided in the car (14), and the leveling sensor (1), the control button (10), the weighing device (8) and the elevator door machine (9) are connected to the elevator through an accompanying cable (11). The control system (7) is connected to the elevator brake (5) through a cable (6); the power source in the clutch device (2) and the power source in the traction device (3) are respectively connected to the control system (7); the traction device (3) is connected to the output end of the power source in the clutch device (2); the actuator in the traction device (3) is driven by the power source in the clutch device (2) to abut or separate from the main shaft end wheel (4) of the elevator, and when abutting with the main shaft end wheel (4), the main shaft end wheel (4) is driven by the power source in the traction device (3) to rotate forward or reverse, thereby driving the car (14) to rise and fall.

2. The traction elevator failure self-rescue device according to claim 1, characterized in that: The power source in the clutch device (2) is an electric push rod (201), which is mounted on the housing (13) and has an output end connected to the traction device (3).

3. The traction elevator failure self-rescue device according to claim 1, characterized in that: The clutch device (2) further comprises a guide mechanism (202), the guide mechanism (202) comprising two groups of guide plates (2021) arranged one above the other, each group of guide plates (2021) comprising two guide plates, and guide slots (2022) are provided on opposite sides of each group of two guide plates (2021), and the dragging device (3) is guided by the guide slots (2022) during movement.

4. The traction elevator failure self-rescue device according to claim 1, characterized in that: The power source in the traction device (3) is a reduction motor (301), the actuator in the traction device (3) is a driving wheel (303), the output end of the reduction motor (301) is connected to the driving wheel (303), and the reduction motor (301) and the driving wheel (303) are driven to move by the power source in the clutch device (2).

5. The traction elevator failure self-rescue device according to claim 4, characterized in that: The traction device (3) further comprises a motor mounting frame (302), the motor mounting frame (302) being connected to the power source output end of the clutch device (2), the reduction motor (301) being fixed on the motor mounting frame (302), and the side of the driving wheel (303) facing the main shaft end wheel (4) being exposed from the motor mounting frame (302).

6. The traction elevator failure self-rescue device according to claim 1, characterized in that: The control system (7) comprises an uninterruptible power supply UPS, a PLC, a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an AC contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2; the power source in the clutch device (2) is an electric push rod (201), and the power source in the traction device (3) is a reduction motor (301); the uninterruptible power supply UPS supplies power to the switching power supply T1, the switching power supply T2, the time delay relay SJJ and the AC contactor BZJ through a power supply cable (12); the switching power supply T1 supplies power to the holding brake (5) of the elevator; and the switching power supply T2 supplies power to the PLC, the electromagnetic relay J1, the electromagnetic relay J2, the electric push rod (201) and the reduction motor (301).

7. The traction elevator failure self-rescue device according to claim 6, characterized in that: The PLC is respectively connected to the leveling induction sensor (1), the weighing device (8), and the control button (10); the first, second, third, and fourth output terminals of the PLC are respectively connected to the first normally closed contact of the electromagnetic relay J1, the coil of the electromagnetic relay J1, the coil of the electromagnetic relay J2, and the coil of the AC contactor BZJ; the first normally closed contact of the electromagnetic relay J1 is connected to the door machine; The uninterruptible power supply UPS is connected to the input end of the switching power supply T1 and the input end of the switching power supply T2 respectively; The coil of the time delay relay SJJ is connected between the two input ends of the switching power supply T1, and the first normally open contact of the electromagnetic relay J1 is connected between the uninterruptible power supply UPS and the input end of the switching power supply T1; the first normally open contact of the AC contactor BZJ, the normally closed contact of the time delay relay SJJ, the diode, and the brake coil are connected in series between the positive and negative output ends of the switching power supply T1; An electric push rod circuit, a reduction motor circuit and a weighing device circuit are connected in parallel between the positive and negative output terminals of the switching power supply T2; The electric push rod circuit comprises a second normally closed contact of an electromagnetic relay J1, a power supply input terminal of the electric push rod (201) in a clutch device (2), and a third normally closed contact of the electromagnetic relay J1, which are sequentially connected in series; The reduction motor circuit comprises a second normally open contact of an AC contactor BZJ, a first normally closed contact of an electromagnetic relay J2, a power supply input terminal of the reduction motor, and a second normally closed contact of the electromagnetic relay J2 which are connected in series in sequence; The weighing device circuit is a power input terminal of the weighing device (8).

8. A method for escaping from a traction elevator failure self-rescue device according to any one of claims 1 to 7, characterized in that: When the elevator stops due to a fault, the trapped person in the car (14) presses the control button (10), and the control system (7) controls the brake (5) to release, controls the power source of the clutch device (2) to push the traction device (3) so that the actuator of the traction device (3) abuts against the main shaft end wheel (4), and controls the power source of the traction device (3) to drive the actuator to drive the main shaft end wheel (4) to rotate forward or reverse, thereby driving the car (14) to move up and down; the forward or reverse rotation of the main shaft end wheel (4) is determined by the weight of the trapped person in the car (14) measured by the weighing device (8) and the weight of the elevator counterweight. When the control system (7) receives that the weight of the trapped person measured by the weighing device (8) is greater than the elevator counterweight, it controls the actuator of the traction device (3) to drive the main shaft end wheel (4) to rotate forward or reverse. The end wheel (4) is reversed to make the car (14) descend; when the control system (7) receives the weight of the trapped person measured by the weighing device (8) that is less than the elevator counterweight, the actuator of the traction device (3) is controlled to drive the main shaft end wheel (4) to rotate forward, so that the car (14) rises; when the car (14) runs to the leveling position, the control system (7) receives the leveling signal output by the leveling sensor (1), controls the brake (5) to close, controls the power source of the clutch device (2) to pull the traction device (3) so that the actuator of the traction device (3) is separated from the main shaft end wheel (4), controls the power source of the traction device (3) to stop working, and the car (14) stops running. The control system (7) controls the door machine (9) to open the door, so that the trapped person can rescue himself.

9. The method for escaping from a difficult situation according to claim 8, characterized in that: The trapped person can press the control button (10) in a point-by-point manner. Each time the control button (10) is pressed, the car (14) is operated and stopped. The button is pressed multiple times until the control system (7) receives a leveling signal output by the leveling sensor (1). The car (14) runs to the leveling position, and the control system (7) controls the brake (5) to close.

10. The method for escaping from a difficult situation according to claim 8, characterized in that: The control system (7) comprises an uninterruptible power supply UPS, a PLC, a switching power supply T1, a switching power supply T2, a time delay relay SJJ, an AC contactor BZJ, an electromagnetic relay J1 and an electromagnetic relay J2; the power source in the clutch device (2) is an electric push rod (201); and the power source in the traction device (3) is a reduction motor (301); When the elevator is lightly loaded, that is, the weight of the trapped person measured by the weighing device (8) is less than the elevator counterweight, the signal of the control button (10) is fed back to the PLC, and the weighing device (8) has no signal input to the PLC, so that the first normally closed contact, the second normally closed contact, and the third normally closed contact of the electromagnetic relay J1 are all disconnected, and the first normally open contact is attracted, so that the first normally open contact and the second normally open contact of the AC contactor BZJ are attracted, and the delay relay SJJ coil is energized to start timing, and the 24V voltage of the switching power supply T2 is output to the electric push rod (201) and the reduction motor (301), and the 110V voltage of the switching power supply T1 is output to the electric push rod (201) and the reduction motor (301). The voltage is output to the brake coil, and the brake (5) is opened within the specified time, and the reduction motor (301) starts to drive in the forward direction. When the specified time is exceeded, the normally closed contact of the delay relay SJJ is disconnected, and the brake 110v is automatically cut off; when the signal of the leveling sensor (1) is transmitted to the PLC, the coil of the electromagnetic relay J1 and the coil of the AC contactor BZJ are de-energized, the reduction motor (301) stops rotating, the brake coil is de-energized, and the electric push rod (201) is reset. After 1s, the first output terminal of the PLC outputs a door opening signal Y0, and the door machine (9) is opened through the first normally closed contact of the electromagnetic relay J1; When the elevator is overloaded, that is, when the weight of the trapped person measured by the weighing device (8) is greater than the elevator counterweight, the signal of the control button (10) is fed back to the PLC, and the trigger signal of the weighing device (8) is input to the PLC, so that the first normally closed contact, the second normally closed contact, and the third normally closed contact of the electromagnetic relay J1 are all disconnected, and the first normally open contact is attracted, so that the first normally closed contact and the second normally closed contact of the electromagnetic relay J2 are all disconnected, and the first normally open contact and the second normally open contact of the AC contactor BZJ are all attracted, and the coil of the delay relay SJJ is energized to start timing, and the 24V voltage of the switch power supply T2 is output to the electric push rod (201) and the reduction motor (301), and the switch power The 110V voltage of source T1 is supplied to the brake coil, and within the specified time, the brake (5) is opened, and the reduction motor (301) starts to drive in reverse. When the specified time is exceeded, the normally closed contact of the delay relay SJJ is disconnected, and the brake 110V is automatically cut off. When the signal of the leveling sensor (1) is transmitted to the PLC, the electromagnetic relay J1 coil, the electromagnetic relay J2 coil and the AC contactor BZJ coil are de-energized, so that the reduction motor (301) stops rotating, the brake coil is de-energized, and the electric push rod (201) is reset. After 1 second, the first output terminal of the PLC outputs a door opening signal Y0, and the door machine (9) is opened through the first normally closed contact of the electromagnetic relay J1.

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