An emergency rescue method for a cableless self-driven elevator

Abstract

The present invention discloses an emergency rescue method for a cableless self-driven elevator. The elevator system includes an emergency control unit, an operation terminal, a brake, and an intermittent brake release. The brake is connected to the intermittent brake release. The operation terminal is arranged outside and inside the car. When the car operates abnormally, the emergency control unit sends out an alarm message. The staff outside the car activates the operation terminal outside the car or the passengers inside the car activate the operation terminal inside the car. The operation terminal controls the intermittent brake release through the emergency control unit, causing the brake to intermittently release and engage, or the operation terminal drives the intermittent brake release to intermittently act, causing the car to descend at a slow speed and locking at the leveling position. In the case where the elevator system fails and cannot be autonomously controlled and requires human intervention, the passengers inside the car can achieve autonomous emergency rescue without external rescue forces. The rescue method is simple and rapid to operate, and can achieve slow-speed leveling rescue and autonomous escape.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly to an emergency rescue method for a cableless self-driven elevator. Background Art

[0002] At present, elevator cars are widely operated by means of wire rope traction drive. Only one car can be installed in one hoistway. For elevators operating in the single-car mode, they can meet the usage requirements in low-rise buildings or places with low pedestrian flow. However, in high-rise buildings or super high-rise buildings with high population density, the disadvantages of long waiting time and low transportation efficiency are significantly magnified. If additional elevator hoistways and corresponding cars are added, it will significantly occupy building space and the cost will also increase significantly. Moreover, the problem of low elevator transportation efficiency still exists.

[0003] To improve the utilization rate of building space and elevator transportation efficiency and reduce the construction and elevator costs, with the continuous development of engineering technology level, a multi-car parallel elevator is being developed and applied. The multi-car parallel elevator adopts a direct drive technology without traction cables, enabling multiple elevators to operate simultaneously in the same hoistway, and the elevators in different hoistways can switch hoistways to operate and achieve overtaking operation.

[0004] However, the multi-car parallel elevator system is a cableless self-driven elevator, and non-leveling emergency rescue work is more difficult to implement compared with traditional elevators, especially in the case of power loss or control system failure. Traditional elevators are cable-driven traction elevators, and external mechanical rescue is achieved through emergency manual or electric disk operation. When an emergency failure occurs in a cableless self-driven elevator, it is often difficult to implement external mechanical rescue, and internal autonomous rescue needs to be carried out inside the car. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides an emergency rescue method for a cableless self-driven elevator. When the elevator system fails and cannot be autonomously controlled and requires human intervention, the passengers inside the car can achieve autonomous emergency rescue without external rescue forces. The rescue method is simple and rapid to operate, and can achieve slow-speed leveling rescue and autonomous escape.

[0006] To solve the above technical problems, the technical solution proposed by the present invention is:

[0007] An emergency rescue method for a cableless self-driven elevator, the elevator system includes an emergency control unit, an operation terminal, a brake, and an intermittent brake release. The brake is connected to the intermittent brake release. The operation terminal is arranged outside and inside the car. When the car operates abnormally, the emergency control unit sends an alarm message. The staff outside the car starts the operation terminal outside the car or the passengers inside the car start the operation terminal inside the car. The operation terminal controls the intermittent brake release through the emergency control unit, so that the indirect brake release controls or drives the brake to intermittently release and close, or the operation terminal mechanically drives the intermittent brake release to intermittently act, and the intermittent brake release mechanically drives the brake to intermittently release and close, so that the car descends slowly, and the car is locked when it descends to the leveling position.

[0008] As a further improvement of the above technical solution:

[0009] The operation terminal includes an internal operation terminal located inside the car and an external operation terminal located outside the car. The internal operation terminal includes a first operation terminal inside the car and a second operation terminal inside the car. The external operation terminal, the first operation terminal inside the car, and the second operation terminal inside the car are arranged parallel and independently of each other. The external operation terminal is electrically connected to the intermittent brake release through the emergency control unit. The first operation terminal inside the car is electrically connected to the intermittent brake release through the emergency control unit. The second operation terminal inside the car is mechanically connected to the intermittent brake release.

[0010] The intermittent brake release includes an electrical automatic brake release and a mechanical brake release. The mechanical brake release includes a mechanical automatic brake release and a mechanical manual brake release. The electrical automatic brake release, the mechanical automatic brake release, and the mechanical manual brake release are arranged parallel and independently of each other. The external operation terminal is electrically connected to the electrical automatic brake release through the emergency control unit. The first operation terminal inside the car is electrically connected to the mechanical automatic brake release through the emergency control unit. The second operation terminal inside the car is mechanically connected to the mechanical manual brake release.

[0011] The elevator further includes a leveling automatic locking device. When the car reaches the leveling position, the leveling automatic locking device locks the car or the emergency control unit controls the brake to stop the car.

[0012] The leveling automatic locking device includes a leveling locking structure, and the leveling locking structure can lock the car at the leveling position.

[0013] The leveling locking structure includes a moving locking component and a static locking component. The moving locking component and the static locking component interact to achieve locking. The moving locking component is installed on the elevator car or the suspension device of the car, and the static locking component is installed on the track where the car runs or is arranged on the track accessory device or the shaft accessory.

[0014] When the staff outside the car receives the alarm information and activates the external operation terminal, the external operation terminal activates the electrical automatic brake release through the emergency control unit. The electrical automatic brake release controls the intermittent release and closing of the brake; when the passengers inside the car receive the alarm information and activate the first operation terminal inside the car, the first operation terminal inside the car activates the mechanical automatic brake release through the emergency control unit. The mechanical automatic brake release controls the intermittent release and closing of the brake; when the passengers inside the car receive the alarm information and intermittently drive the second operation terminal, the second operation terminal drives the mechanical manual brake release action, and the mechanical manual brake release drives the intermittent release and closing of the brake.

[0015] There is a display interface and an audible and visual alarm inside the car. When the emergency control unit receives the action information of the external operation terminal, the display interface inside the car displays the information that the external operation terminal has acted, reminding the passengers that there is no need to act anymore. When the emergency control unit issues an alarm message and the external operation terminal does not act within a certain period of time, the display interface inside the car will display a warning message, reminding the passengers to operate the second operation terminal or the first operation terminal inside the car. When the emergency control unit receives the action information of the second operation terminal or the first operation terminal inside the car, the display interface inside the car will display that the action has been started.

[0016] The action priority levels of the external operation terminal, the first operation terminal inside the car, and the second operation terminal inside the car are, from high to low, in turn: the second operation terminal inside the car, the first operation terminal inside the car, and the external operation terminal.

[0017] When the second operation terminal inside the car acts first, the actions of the first operation terminal inside the car and the external operation terminal cannot be inserted into the control circuit. When the first operation terminal inside the car acts first, the action of the external operation terminal cannot be inserted into the control circuit, and the action of the second operation terminal inside the car can be inserted into the control circuit to replace the action of the first operation terminal inside the car. When the first operation terminal inside the car acts first and then the second operation terminal inside the car acts, the second operation terminal inside the car is inserted into the control circuit. When the action of the second operation terminal inside the car is inserted into the control circuit and then the action of the second operation terminal inside the car is cancelled, the first operation terminal inside the car resumes its action. When the external operation terminal acts first, both the second operation terminal inside the car and the first operation terminal inside the car can be inserted into the control circuit.

[0018] The present invention has the following advantages compared with the prior art:

[0019] A self-rescue method for multi-car parallel elevators is provided. When the elevator system fails and is unable to control itself and requires human intervention, passengers in the car can achieve self-emergency rescue without external rescue forces. Emergency rescue can be achieved through multiple terminals, and the operation actions of the multiple terminals complement each other and do not interfere with each other, improving the reliability of emergency rescue. The rescue method is reliable, simple, and quick to operate, and can achieve slow-speed leveling rescue and self-escape. In particular, when the frictional driving force or braking force is insufficient and slipping occurs, the elevator can be decelerated and slowly leveled by intermittent brake release, avoiding elevator overspeed, reducing the overspeed operation of the safety gear, and preventing accidental movement of the car, thus avoiding the occurrence of shearing accidents. The intermittent brake release can control the speed of the car moving downward along the track, ensuring the safety of elevator emergency rescue. The intermittent brake release structure is simple, easy to operate and implement, and does not damage the track. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the car not being in the leveling position of the present invention.

[0021] Figure 2 It is a schematic diagram of the car being in the leveling position of the present invention.

[0022] Figure 3 It is a schematic diagram of the pin shaft and pin hole of the car not being locked in an embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the pin shaft and pin hole of the car being locked in an embodiment of the present invention.

[0024] Figure 5 is Figure 4 A-A sectional view schematic diagram of

[0025] Figure 6 It is a schematic diagram of the pin shaft and waist-shaped hole of the car not being locked in another embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the pin shaft and waist-shaped hole of the car being locked in another embodiment of the present invention.

[0027] Figure 8 is Figure 7 B-B sectional view schematic diagram of Detailed Description of the Invention

[0028] The following provides a detailed description of the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0029] An emergency rescue method for a cableless self-driven elevator. The elevator system includes a car 1, a track 2, a guiding device, a brake, a suspension device, an emergency control unit, an operation terminal, an intermittent brake release and a leveling automatic locking device. The track 2 is arranged in the hoistway 3 of a building. Both the guiding device and the car 1 are connected to the suspension device. The guiding device runs along the track 2, and the guiding device guides the car 1 to run along the track 2 through the suspension device. The brake is used to brake the car 1 to stop its operation, and the intermittent brake release is connected to and drives the brake to act.

[0030] When the car 1 operates abnormally, the emergency control unit issues an alarm message. The staff outside the car 1 or the passengers inside the car 1 start the operation terminal. The operation terminal controls the intermittent brake release, so that the intermittent brake release controls and drives the brake to release and engage intermittently. The car 1 moves downward due to its own gravity during the time when the brake is released, and the car 1 decelerates during the time when the brake engages, so that the downward movement speed of the car 1 will not be too large, and then the car 1 slowly descends to the leveling position 4 and is locked and stops running by the leveling automatic locking device.

[0031] The leveling position 4 means that the bottom plate of the car 1 is flush with the bottom plate of a certain floor of the building, so that passengers can normally walk into the car 1 from a certain floor of the building or walk out of the car 1 and enter a certain floor of the building.

[0032] The abnormal operation of the car 1 is also called the elevator being in the emergency rescue state. The emergency rescue state means that the elevator system fails and is in a state where it cannot be autonomously controlled and requires human intervention, including but not limited to: stopping at a non-leveling position during an emergency stop, power failure, control system failure, safety circuit failure, safety communication failure, etc. The faults include hardware faults and software faults.

[0033] The intermittent brake release includes an electrical automatic brake release and a mechanical brake release. The mechanical brake release includes a mechanical automatic brake release and a mechanical manual brake release. Both the mechanical automatic brake release and the mechanical manual brake release are installed on the car 1 or the suspension device. The electrical automatic brake release and the mechanical brake release are arranged in parallel and independently of each other, and the mechanical automatic brake release and the mechanical manual brake release are arranged in parallel and independently of each other.

[0034] The electrical automatic brake release is electrically connected to the emergency control unit. When the electrical automatic brake release receives the brake release electrical signal from the emergency control unit, the electrical automatic brake release directly makes the elevator brake get electricity through the electrical signal and the brake is released, that is, the brake is released. When the electrical automatic brake release receives the brake engagement electrical signal from the emergency control unit, the electrical automatic brake release directly makes the elevator brake lose electricity through the electrical signal and the brake is tightened, realizing the slow descent and stopping functions of the car 1.

[0035] The mechanical automatic brake release is electrically connected to the operation terminal. When performing an electrical operation on the operation terminal, such as controlling the buttons, switches, etc. of the operation terminal through an electrical signal, the mechanical automatic brake release automatically completes intermittent brake release under the action of electricity, and then the mechanical automatic brake release drives the brake to perform intermittent closing and opening. It should be noted that the mechanical automatic brake release can also be directly electrically connected to the emergency control unit, and its action is controlled by the emergency control unit.

[0036] The mechanical manual brake release is mechanically connected to the operation terminal. When performing a mechanical operation on the operation terminal, the operation terminal drives the mechanical manual brake release to act. Specifically, when the elevator is in an emergency state and the operation terminal does not act, the mechanical manual brake release does not trigger the elevator brake, and at this time, the elevator brake should be in the braking state to achieve the braking effect on the car 1; when the operation terminal acts, the mechanical manual brake release triggers the elevator brake, causing the elevator brake to release the brake, so as to achieve the slow descent of the car 1. By intermittently operating the operation terminal, it is possible to achieve that the mechanical manual brake release makes the elevator brake intermittently brake and release, so that the car moves downward intermittently at a slow speed under the action of its own gravity and the braking force of the brake closing.

[0037] As can be seen from the above, intermittent brake release can control the brake to switch between the two states of brake release and closing. Brake release means that the brake releases the hold and does not brake, and closing means that the brake holds tightly and brakes. Intermittent brake release needs to ensure that the durations of brake release and braking meet certain requirements. Specifically, within the brake release time period, the maximum speed at which the elevator car 1 moves downward under its own weight does not exceed the inspection running speed of the elevator car 1. At the same time, the maximum deceleration when the elevator car 1 moves downward to the automatic locking at the leveling position 4 under its own weight within the brake release time period cannot exceed the maximum deceleration generated during closing.

[0038] Intermittent brake release can control the speed at which the elevator car 1 moves downward along the track 2, ensuring the safety during elevator emergency rescue. It should be noted that when the elevator car 1 is running normally, the execution end of the intermittent brake release (i.e., the execution mechanism that triggers the brake) will not affect the normal operation of the brake. For example, the execution mechanism is separated from the brake, and it will only come into contact with the brake when the execution mechanism acts, forcing it to release, so as not to affect the normal running and stopping of the car 1.

[0039] The operation terminal includes an external operation terminal and an internal operation terminal located inside the car 1. The internal operation terminal includes a first operation terminal inside the car 1 and a second operation terminal inside the car 1. The external operation terminal is located in the elevator control center outside the car 1, and the first operation terminal inside the car 1 and the second operation terminal inside the car 1 are located inside the car 1.

[0040] The external operation terminal, the first operation terminal in the car 1, and the second operation terminal in the car 1 are respectively connected to the brake release intermittently in parallel. Specifically, the external operation terminal and the first operation terminal in the car 1 are respectively electrically connected to the emergency control unit, and both the electric automatic brake release and the mechanical automatic brake release are electrically connected to the emergency control unit. When the emergency control unit receives the action instruction from the external operation terminal, the emergency control unit controls the electric automatic brake release to be powered on or off to intermittently release and engage the elevator brake; when the emergency control unit receives the action instruction from the first operation terminal in the car 1, the emergency control unit controls the mechanical automatic brake release to act, driving its actuator to intermittently release and engage the elevator brake. That is, the external operation terminal and the electric automatic brake release are electrically connected through the emergency control unit, and the first operation terminal in the car 1 and the mechanical automatic brake release are electrically connected through the emergency control unit. The external operation terminal can be an operation button or switch of the elevator control unit, and the first operation terminal in the car 1 can be an operation button or switch provided inside the car 1.

[0041] The second operation terminal in the car 1 is mechanically connected to the mechanical manual brake release. When the second operation terminal in the car 1 is started to act, the second operation terminal in the car 1 directly drives the mechanical manual brake release to act, and the mechanical manual brake release then drives the brake to act. The second operation terminal in the car 1 is also electrically connected to the emergency control unit so that the emergency control unit can detect whether the second operation terminal in the car 1 acts. This can be achieved through existing technologies such as position sensors and will not be elaborated here. The second operation terminal in the car 1 is a labor-saving mechanical device such as a pull rod provided inside the car 1.

[0042] The second operation terminal in the car 1 can be connected to the mechanical manual brake release through a connecting mechanism. The connecting mechanism realizes the transmission of the operating force or torque, and the connecting mechanism can be an operating gear pair, a connecting rod lever, a cable, etc. The second operation terminal in the car 1 can provide the force for brake release and maintaining brake release by pulling with the hand or stepping with the foot, so that the mechanical manual brake release drives the brake to release. The mechanical manual brake release is self-resetting. When the hand or foot of the passenger in the car 1 leaves the second operation terminal in the car 1, that is, when the force acting on the second operation terminal in the car 1 is withdrawn, the mechanical manual brake release will automatically reset to make the brake hold tightly again to achieve braking. The automatic reset function can be realized by setting an automatic reset spring.

[0043] The external operation terminal and the first operation terminal in the car 1 can be regarded as an automatic operation mode, and the second operation terminal in the car 1 can be regarded as a manual operation mode. The first operation terminal in the car 1 and the second operation terminal in the car 1 are provided with anti-misoperation anti-misoperation covers.

[0044] As can be seen from the above, the electrical automatic brake release can transmit an electrical signal to the brake to achieve periodic or intermittent release and closing of the brake; the mechanical automatic brake release is controlled by the electrical signal of the emergency control unit and then drives the brake to release and close periodically or intermittently; the mechanical manual brake release is driven mechanically by the operation terminal, and the mechanical manual brake release then drives the brake to release and close periodically or intermittently. The specific structures and technical solutions of the electrical automatic brake release, the mechanical automatic brake release, and the mechanical manual brake release can adopt the solutions in the prior art and will not be elaborated here.

[0045] The action priority levels of the external operation terminal, the first operation terminal in car 1, and the second operation terminal in car 1 from high to low are as follows: the second operation terminal in car 1, the first operation terminal in car 1, and the external operation terminal. The explanation is as follows:

[0046] When the second operation terminal in car 1 acts first, the actions of the first operation terminal in car 1 and the external operation terminal cannot be inserted into the control circuit;

[0047] When the first operation terminal in car 1 acts first, the action of the external operation terminal cannot be inserted into the control circuit, and the action of the second operation terminal in car 1 can be inserted into the control circuit to replace the action of the first operation terminal in car 1; when the first operation terminal in car 1 acts first and then the second operation terminal in car 1 acts, the second operation terminal in car 1 is inserted into the control circuit. When the action of the second operation terminal in car 1 is inserted into the control circuit and then the action of the second operation terminal in car 1 is cancelled, the first operation terminal in car 1 resumes its action;

[0048] When the external operation terminal acts first, both the second operation terminal in car 1 and the first operation terminal in car 1 can be inserted into the control circuit; when the external operation terminal acts first and then the second operation terminal in car 1 or the first operation terminal in car 1 acts, the action of the second operation terminal in car 1 or the first operation terminal in car 1 is inserted into the control circuit. When the action of the second operation terminal in car 1 or the first operation terminal in car 1 is inserted into the control circuit and then the action of the second operation terminal in car 1 or the first operation terminal in car 1 inserted into the control circuit is cancelled, the external operation terminal resumes its action.

[0049] The recommended order of starting for each operation terminal in emergency rescue is as follows: the external operation terminal, the first operation terminal in car 1, and the second operation terminal in car 1.

[0050] Inside the car 1, there is a display interface and an audible and visual alarm, which can display the current status and give an audible and visual alarm, including the current running speed of the car 1, safety status, applied load (recommended load and actual load), emergency display, operation guide, whether the car 1 is at the leveling position 4, etc. Correspondingly, the display interface inside the car 1 will guide the passengers not to take any further action after the external operation terminal has taken action. When the external operation terminal does not take action, it will guide the passengers to take action on the first operation terminal inside the car 1 first.

[0051] After the emergency control unit receives the action information of the external operation terminal, the display interface inside the car 1 will display the information that the external operation terminal has taken action, reminding the passengers that there is no need to take any further action.

[0052] When the emergency control unit issues an alarm message and the external operation terminal does not take action within a certain period of time, the display interface inside the car 1 will display a warning message, reminding the passengers to operate the second operation terminal or the first operation terminal inside the car 1.

[0053] After the emergency control unit receives the action information of the second operation terminal or the first operation terminal inside the car 1, the display interface inside the car 1 will display that the action has been started.

[0054] When the elevator breaks down and enters the emergency rescue state, the car 1 is most likely not at the leveling position 4, which is not conducive to the evacuation of passengers. The cooperation of the above-mentioned operation terminal and the intermittent brake release is to enable the elevator car 1 to slowly descend to the leveling position 4 in the emergency rescue state, so as to facilitate the evacuation of the passengers inside the car 1.

[0055] The leveling automatic locking device includes a leveling locking structure 5 and a leveling sensor. The leveling locking structure 5 is a mechanical structure that can lock the car 1 at the leveling position 4. The leveling sensor is used to sense whether the car 1 has reached the leveling position 4, send the sensing information to the emergency control unit, and display it on the display interface outside or inside the car 1, or remind the people outside and inside the car through sound and light. The emergency control unit controls the leveling locking structure 5 to lock the car 1. When the leveling sensor senses that the car 1 has reached the leveling position 4, the emergency control unit can also control the brake to stop the car 1. When the car 1 is stopped at the leveling position 4 by the brake, first, the leveling sensor senses the information that the car 1 has reached the leveling position 4, and then the leveling sensor sends the information to the emergency control unit, and the emergency control unit controls the brake to stop the car 1.

[0056] The flat floor locking structure 5 acts on the track 2 on which the elevator car 1 runs, or on the auxiliary device of the track 2 near the flat floor, or on the auxiliary part of the hoistway 3. The flat floor locking structure 5 includes a moving locking part and a static locking part, and the moving locking part and the static locking part interact to achieve locking. Among them, the moving locking part is installed on the elevator car 1 or the suspension device, and the static locking part is installed on the track 2 of the elevator operation or the auxiliary device of the track 2 near the flat floor or the auxiliary part of the hoistway 3. When the car 1 runs normally, the flat floor locking structure 5 is in an untriggered state and will not lock when passing through the flat floor position 4. When the emergency rescue program is started, the flat floor locking structure 5 is triggered, and the car 1 automatically locks when it runs downward to the flat floor position 4.

[0057] It should be noted that the flat floor inductor can be not set, which does not affect the realization of the function of the flat floor automatic locking device. Specifically, when the elevator is in the emergency rescue state, the emergency control unit directly controls the moving locking part of the flat floor locking structure 5 to pop out. When the car reaches the flat floor position 4, the moving locking part is stuck into the static locking part to achieve locking. The setting of the flat floor inductor is to increase the interaction function, so that external staff and passengers in the car can know that the flat floor has been reached.

[0058] As Figures 3 to 5 The flat floor locking structure 5 shown is a plug-type flat floor locking structure 5. The moving locking part is a pin shaft 6, and the static locking part is a pin shaft hole 7. The automatic flat floor locking is achieved through the cooperation of the pin shaft 6 and the pin shaft hole 7. The pin shaft 6 can be triggered electrically or manually to pop out. Preferably, the pin shaft hole 7 is located in the opening area within a certain distance above and below the landing sill of the landing door. When the emergency rescue program is started, the automatic flat floor locking structure 5 is triggered, and the pin shaft 6 pops out. After popping out, one end face of the pin shaft 6 abuts against the surface of the track 2 or the surface of the auxiliary device of the track 2. The pin shaft 6 slides down closely along the surface of the track 2 or the surface of the auxiliary device of the track 2. When passing through the pin shaft hole 7 that matches it during the sliding process, the pin shaft 6 will be stuck into the locking pin shaft hole 7 under the action of the thrust force, realizing automatic locking when the elevator reaches the flat floor. It should be noted that the triggering of the pin shaft 6 means that the pin shaft 6 is driven by a driving part to move, that is, the thrust force is provided by the driving part. The emergency control unit is electrically connected to and can control the driving part. Specifically, the driving part applies a force to the pin shaft 6. When the car runs, the pin shaft 6 contacts the guide rail and runs along the guide rail under the action of the driving part. When running to the pin shaft hole 7, the pin shaft 6 is inserted into the pin shaft hole 7 on the guide rail under the action of the driving part, locking the car 1. The emergency control unit can also control the driving part to drive the pin shaft 6 to be pulled out from the pin shaft hole 7. The driving part is a hydraulic device, an electric device or a magnet, etc. The automatic control scheme of the hydraulic device can adopt the scheme in the existing technology and will not be elaborated here. When the emergency control unit receives the signal of the operation terminal action, the emergency control unit controls the driving part to act.

[0059] Preferably, a plurality of pin shafts 6 are provided on the suspension device of the car 1, and a plurality of pin holes 7 are provided at corresponding positions on each floor of the building. When the plurality of pin shafts 6 are respectively inserted into the plurality of pin holes 7 on the same floor, the car 1 is locked at the leveling position 4 corresponding to this floor. The arrangement of the plurality of pin shafts 6 and the plurality of pin holes 7 improves the reliability of the automatic leveling and locking function.

[0060] Furthermore, the pin hole 7 is an oblong hole or a waist-shaped hole 8. As Figures 6 to 8 shown, the length direction of the cross-section of the waist-shaped hole 8 is parallel to the length direction of the track 2, so as to improve the reliability of the pin shaft 6 being stuck into the pin hole 7 under the action of the spring force.

[0061] The leveling locking structure 5 can also be a tooth groove type structure. Correspondingly, the moving locking component is a convex tooth, and the static locking component is a concave tooth. The automatic leveling and locking is realized through the cooperation of the convex tooth and the concave tooth. The working principle is the same as that of the cooperation between the pin shaft 6 and the pin hole 7, and will not be elaborated here.

[0062] The leveling sensor includes a sensing end A and a plurality of sensing ends B. The sensing end A is installed on the suspension device or the car 1, and the plurality of sensing ends B are respectively installed at the elevator exits on each floor of the building. When the car 1 is at a certain leveling position, the sensing end A can sense the sensing end B of this floor and send the sensing information to the emergency control unit. The emergency control unit displays the information that the car 1 has reached the leveling position on the display interfaces in the control center and in the car 1.

[0063] When the emergency control unit determines that the elevator is in the emergency rescue state, the sound and light alarm device gives an alarm. After the staff in the elevator control center receives the alarm information, they start the external operation terminal. After the emergency control unit receives the action information of the external operation terminal, it controls the electric automatic brake to intermittently close and release the elevator brake. The intermittent closing and releasing of the brake enables the car to move downward due to its own gravity during the time when the brake is released, and the car decelerates during the time when the brake is closed, so that the downward movement speed of the car will not be too large, realizing the slow movement of the car 1 to the leveling position. After the emergency control unit receives the action information of the external operation terminal, the display interface in the car 1 will display the information that the external operation terminal has been operated, reminding the passengers not to act anymore. At the same time, the emergency control unit sends an instruction to control the action of the leveling automatic locking device. When the car 1 slowly runs to the leveling position, the car 1 is locked at the leveling position 4, or the leveling automatic locking device sends the information that the car 1 has reached the leveling position 4 to the emergency control unit, and the emergency control unit stops the car 1 at the leveling position 4 through the brake, which is convenient for rescue and escape. When the car 1 reaches the leveling position 4, the emergency control unit displays the information that the car 1 has reached the leveling position 4 on the display interface in the car 1.

[0064] When the emergency control unit determines that the elevator is in the emergency rescue state and issues an audible and visual alarm, but the external operation terminal does not act within a certain period of time, a warning message will be displayed on the display interface in car 1 to remind passengers that they can operate the second operation terminal or the first operation terminal in car 1, and it is preferred to operate the first operation terminal in car 1 first. After the first operation terminal in car 1 acts, the subsequent actions of the elevator system are similar to those after the external operation terminal is activated. When the passengers in car 1 operate the second operation terminal, the mechanical manual brake release triggers the elevator brake, causing the elevator brake to release the brake, so as to achieve the slow descent of car 1. By intermittently operating the operation terminal, it is possible to achieve the intermittent braking and release of the elevator brake driven by the mechanical manual brake release, so that the car moves downward in a slow intermittent manner under the action of its own gravity and the braking force of the brake closing.

[0065] It should be noted that the detailed structures of the guiding device and the suspension device are disclosed in other patents of the applicant, and will not be repeated here.

[0066] As can be seen from the above, the emergency rescue method includes external rescue and internal self-rescue.

[0067] External rescue refers to the rescue implemented by personnel outside the elevator. The rescue personnel issue an emergency rescue instruction to the emergency control unit by operating the external operation terminal, so that the emergency control unit controls the electrical automatic brake release to brake car 1, making car 1 run downward at a slow speed. When car 1 reaches the flat layer position 4, it is automatically locked by the flat layer automatic locking device. The external operation terminal is set near the elevator machine room or the landing, so that the rescue personnel can reach and operate quickly and conveniently.

[0068] Internal self-rescue refers to the self-rescue implemented by the passengers in elevator car 1. The passengers in the car issue an emergency rescue instruction to the emergency control unit by operating the first operation terminal, so that the emergency control unit controls the mechanical automatic brake release to brake car 1, making car 1 run downward at a slow speed. When car 1 reaches the flat layer position 4, it is automatically locked, or by operating the second operation terminal, the second operation terminal directly drives the mechanical manual brake release action.

[0069] External rescue is an automatic rescue mode, and internal self-rescue includes automatic rescue and manual rescue modes. In the automatic rescue mode, when the emergency control unit receives an emergency rescue instruction, it automatically executes the emergency rescue program. The controller of the emergency control unit respectively controls the electrical automatic brake release to intermittently close and release the brake and controls the mechanical automatic brake release to intermittently close and release the brake. Car 1 runs downward at a slow speed under the action of its own weight, stops and locks at the flat layer position 4, and then opens the door to evacuate the passengers.

[0070] In the manual rescue mode, when the passengers in car 1 trigger the second operation terminal, the manual rescue procedure will be executed. The passengers in the car manually operate the second operation terminal, which drives the mechanical manual brake release to intermittently close and release the brake. Under the action of its own weight, car 1 runs downward at a slow speed to the nearest landing position 4, stops and locks, and then the door is opened to evacuate the passengers.

[0071] Correspondingly, the priorities of the three rescue modes are as follows: the manual rescue mode has the highest priority, followed by the automatic in-car rescue mode, and finally the external rescue mode. When the control system and the emergency control unit of the elevator system are fault-free, the external rescue procedure and the automatic in-car rescue procedure can be preferentially implemented; when there is a power outage or at least one of the control system and the emergency control unit fails, the manual rescue procedure needs to be used.

[0072] The above embodiments are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the scope of the protection of the technical solution of the present invention.

Claims

1. An emergency rescue method for a cableless self-driven elevator, characterized in that: The elevator system includes an emergency control unit, an operation terminal, a brake, and an intermittent brake release. The brake is connected to the intermittent brake release. The operation terminal is arranged outside and inside the car. When the car operates abnormally, the emergency control unit issues an alarm message. The staff outside the car activates the operation terminal outside the car or the passengers inside the car activate the operation terminal inside the car. The operation terminal controls the intermittent brake release through the emergency control unit, so that the indirect brake release controls or drives the brake to release and engage intermittently, or the operation terminal drives the intermittent brake release to act intermittently. The intermittent brake release drives the brake to release and engage intermittently, so that the car descends slowly, and the car is locked when it reaches the leveling position; The operation terminal includes an internal operation terminal located inside the car and an external operation terminal located outside the car. The internal operation terminal includes a first operation terminal inside the car and a second operation terminal inside the car. The external operation terminal, the first operation terminal inside the car, and the second operation terminal inside the car are arranged parallel and independently of each other. The external operation terminal is electrically connected to the intermittent brake release through the emergency control unit. The first operation terminal inside the car is electrically connected to the intermittent brake release through the emergency control unit. The second operation terminal inside the car is mechanically connected to the intermittent brake release; The intermittent brake release includes an electrical automatic brake release and a mechanical brake release. The mechanical brake release includes a mechanical automatic brake release and a mechanical manual brake release. The electrical automatic brake release, the mechanical automatic brake release, and the mechanical manual brake release are arranged parallel and independently of each other. The external operation terminal is electrically connected to the electrical automatic brake release through the emergency control unit. The first operation terminal inside the car is electrically connected to the mechanical automatic brake release through the emergency control unit. The second operation terminal inside the car is mechanically connected to the mechanical manual brake release; The action priority levels of the external operation terminal, the first operation terminal inside the car, and the second operation terminal inside the car are, from high to low: the second operation terminal inside the car, the first operation terminal inside the car, and the external operation terminal; When the second operation terminal inside the car acts first, the actions of the first operation terminal inside the car and the external operation terminal cannot be inserted into the control circuit. When the first operation terminal inside the car acts first, the action of the external operation terminal cannot be inserted into the control circuit, and the action of the second operation terminal inside the car can be inserted into the control circuit to replace the action of the first operation terminal inside the car. When the first operation terminal inside the car acts first and then the second operation terminal inside the car acts, the second operation terminal inside the car is inserted into the control circuit. When the action of the second operation terminal inside the car is inserted into the control circuit and then the action of the second operation terminal inside the car is cancelled, the first operation terminal inside the car resumes its action. When the external operation terminal acts first, both the second operation terminal inside the car and the first operation terminal inside the car can be inserted into the control circuit.

2. The emergency rescue method according to claim 1, characterized in that, The elevator further includes a leveling automatic locking device. When the car reaches the leveling position, the leveling automatic locking device locks the car or the emergency control unit controls the brake to stop the car.

3. The emergency rescue method according to claim 2, characterized in that, The landing automatic locking device includes a landing locking structure, and the landing locking structure can lock the car at the landing position.

4. The emergency rescue method according to claim 3, characterized in that the landing locking structure includes a moving locking component and a static locking component, and the moving locking component and the static locking component interact to achieve locking. The moving locking component is installed on the elevator car or the suspension device of the car, and the static locking component is installed on the track where the car runs or on the track accessory device or the shaft accessory.

5. The emergency rescue method according to claim 3 or 4, characterized in that when the staff outside the car receives the alarm information and activates the external operation terminal, the external operation terminal starts the electrical automatic brake release through the emergency control unit, and the electrical automatic brake release controls the intermittent brake release and closing of the brake; when the passengers in the car receive the alarm information and activate the first operation terminal in the car, the first operation terminal in the car starts the mechanical automatic brake release through the emergency control unit, and the mechanical automatic brake release controls the intermittent brake release and closing of the brake; when the passengers in the car receive the alarm information and intermittently drive the second operation terminal, the second operation terminal drives the mechanical manual brake release action, and the mechanical manual brake release drives the intermittent brake release and closing of the brake.

6. The emergency rescue method according to claim 5, characterized in that a display interface and an audible and visual alarm are provided in the car. When the emergency control unit receives the action information of the external operation terminal, the display interface in the car displays the information that the external operation terminal has acted, reminding the passengers that there is no need to act anymore. When the emergency control unit issues an alarm information and the external operation terminal does not act within a certain period of time, the display interface in the car will display a warning message, reminding the passengers to operate the second operation terminal or the first operation terminal in the car. When the emergency control unit receives the action information of the second operation terminal or the first operation terminal in the car, the display interface in the car will display that the action has been started.

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