CN217201501U - Intelligent braking control system for elevator car - Google Patents

Abstract

The utility model provides an elevator car intelligence system of stopping control system, this elevator car intelligence system of stopping control system include car, guide rail, master control unit, system stop device and system stop the control unit. Wherein: the car is configured for guiding engagement with the car guide rails; a stopping device is provided on the car and configured to cooperate with a guide rail to stop the car; make and stop the control unit with the main control unit with make and stop device communication connection, be configured to and receive the elevator state signal that the main control unit sent judges whether the elevator state exists unusually, if, to make stop the device and send the system stops the instruction, this disclosure can effectively discern elevator car and dash the top, squat the end, open the door and walk states such as ladder, feasible protection passenger and (or) safety such as maintenance technical staff and elevator equipment, has improved the whole security of elevator, and to a great extent has reduced the probability of equipment damage and casualties.

Description

Intelligent braking control system for elevator car

Technical Field

The disclosure relates to the field of elevator safety, in particular to an intelligent braking control system for an elevator car.

Background

Elevators are increasingly widely used in daily life, as special equipment, the safety requirement of elevators is high, and at present, two common modes of stopping elevators are available, one of which is a brake (commonly called a band-type brake), but the brake is usually arranged on a traction machine for driving a traction steel wire rope, and often fails due to improper maintenance and/or adjustment operation and the like. The other is in the form of a speed limiter matched safety gear, but the method has the advantages that the elevator car can only act when the speed of the elevator car exceeds the rated speed of the speed limiter, the response time is long, once the safety gear starts braking, the action is very urgent, the passengers in the car or the car body are often hurt or damaged, and permanent damage is caused to an elevator guide rail.

The braking system is of great importance in the structure of the elevator, accidents such as casualties, equipment damage and the like frequently occur due to human and object factors, and therefore, improvement measures are very necessary.

SUMMERY OF THE UTILITY MODEL

The utility model provides an elevator car intelligence system of stopping control system for solve the problem that exists among the prior art.

According to a first aspect of the present disclosure, there is provided an elevator car intelligent braking control system, comprising:

a car configured to be in guiding engagement with a car guide rail;

a main control unit;

a stopping device provided on the car and configured to cooperate with a guide rail to stop the car on the guide rail;

the braking control unit is in communication connection with the main control unit and the braking device and is configured to receive an elevator state signal sent by the main control unit, judge whether the elevator state is abnormal or not and send the braking instruction to the braking device if the elevator state is abnormal.

In one embodiment of the present disclosure, the stopping device comprises at least two stopping elements configured to fit together with opposite sides of the guiding rail.

In one embodiment of the present disclosure, the braking element includes a brake pad and an electric actuating device, the brake pad is connected to an output end of the electric actuating device and configured to move toward the guide rail under the action of the output end of the electric actuating device to be matched with the guide rail when the braking device executes a braking command.

In one embodiment of the disclosure, the braking element comprises a brake block and a hydraulic oil cylinder, the brake block is connected with an output end of the hydraulic oil cylinder and is configured to move towards the guide rail under the action of the output end of the hydraulic oil cylinder to be matched with the guide rail when the braking device executes a braking command.

In one embodiment of the present disclosure, the braking device includes a master cylinder, the master cylinder is connected to a hydraulic oil cylinder in the braking device through a hydraulic oil path, and is configured to provide oil pressure to the hydraulic oil path when the braking device executes a braking instruction, so that the hydraulic oil cylinder drives a brake pad to move towards the guide rail.

In one embodiment of the present disclosure, the hydraulic system further comprises a fluid infusion device, wherein the fluid infusion device is communicated with the hydraulic oil path through an oil valve; the oil valve is configured to be opened, and hydraulic oil flows from the fluid infusion device to the hydraulic oil path for infusion or flows from the hydraulic oil path to the fluid infusion device for relief.

In one embodiment of the present disclosure, the oil valve includes a base having a liquid passage, and a valve ball disposed in the liquid passage by a spring, the valve ball being configured to block the liquid passage under the action of the spring.

In one embodiment of the disclosure, during the resetting of the master cylinder, when the vacuum negative pressure in the hydraulic oil path is greater than the elastic force of the spring, the valve ball is configured to move in the direction of the hydraulic oil path against the elastic force of the spring to open the liquid passage, and the hydraulic oil flows from the liquid replenishing device to the hydraulic oil path for replenishing the oil.

In one embodiment of the disclosure, a movable member is further disposed on the base, and one end of the movable member extends out of the base, and the other end of the movable member extends into the liquid passage and is matched with the valve ball.

This open elevator car intelligence system stops control system this disclosure can effectively discern elevator car and dash the top, squat at the bottom, open the door and walk states such as ladder, and feasible protection passenger and (or) safety such as maintenance technical personnel and elevator equipment have improved the whole security of elevator, and to a great extent has reduced the probability of equipment damage and casualties.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of an elevator car intelligent braking control system;

FIG. 2 is a schematic diagram of a stop member in one embodiment;

FIG. 3 is a schematic diagram of a hydraulic master cylinder in relation to a hydraulic oil pump in one embodiment;

FIG. 4 is a schematic diagram of a control system in an embodiment;

FIG. 5 is a schematic view of the structure of an oil valve in one embodiment;

FIG. 6 is a flow diagram of a control method in one embodiment.

Reference numerals

1-car, 2-guide rail, 411-brake block, 412-hydraulic oil pump, 43-hydraulic master cylinder, 431-piston, 432-driving rod, 42-hydraulic oil way, 44-pressure detection device, 61-oil valve, 615-movable part, 614-valve ball, 613-spring and 611-liquid channel.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Specific embodiments of the present disclosure are described below with reference to the accompanying drawings.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.

In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate the degree and order of importance, and the premise that each other exists, and the like.

In this context, "equal", "same", etc. are not strictly mathematical and/or geometric limitations, but also include tolerances as would be understood by a person skilled in the art and allowed for manufacturing or use, etc.

The disclosure provides an intelligent elevator car stopping control system and an intelligent elevator car stopping control method for solving the problems in the prior art.

In order to solve the safety problem of elevator car braking, the embodiment of the present disclosure discloses an elevator car intelligence braking control system, refer to fig. 1, functionally divided, mainly include: the system comprises a car 1, a braking control unit 5 and a braking device 4, and is also provided with a main control unit 3 for sending elevator state signals.

In this embodiment, referring to fig. 1, the braking control unit 5 is in communication connection with the main control unit 3 and the braking device 4, respectively, to receive the elevator state information sent by the main control unit 3, and send a braking instruction to the braking device 4 when the elevator state is abnormal. The main control unit 3 is used for controlling the operation of the elevator, for example, sending control signals to the elevator and receiving information related to the operation of the elevator. The main control unit 3 is in communication connection with the braking control unit 5, so that a corresponding elevator state signal in the main control unit 3 can be sent to the braking control unit 5, the braking control unit 5 makes a corresponding judgment based on the received elevator state signal, if the current elevator operation is judged to be abnormal, a braking instruction is sent to the braking device 4, the braking device 4 is arranged on the car 1, and the braking device 4 makes a braking action after receiving the braking instruction so as to be in contact fit with the guide rail 2, so that the car 1 is braked.

In one embodiment of the present disclosure, the braking device 4 includes two braking elements located on two opposite sides of the guide rail 2, so that the braking device 4 can make two brake pads 411 of the two braking elements contact and fit with two opposite sides of the guide rail 2 after receiving a braking command. In a particular application, two braking elements may be provided on each of the opposite sides of the car 1, so that both sides of the car 1 can be braked simultaneously. In the process, the acting force between the two brake pieces 411 and the guide rail 2 is the same through the relative movement of the brake pieces 411 at the relative positions of the guide rail 2, the stress between the whole car 1 and the guide rail 2 is balanced, the car 1 cannot incline, and under the action of the brake pieces 411, the car 1 can be more stable in the braking process, the sudden stopping condition cannot occur, the damage to the car 1 and the injury to passengers in the braking process of the car 1 are reduced, and the safety of the elevator is improved.

The braking device 4 may be an electric actuating device, such as an electric motor, an electric cylinder, or the like, known to those skilled in the art. The hydraulic cylinder can be used, and the technical scheme of the application is explained in detail by taking the hydraulic cylinder as an example in the embodiment.

Referring to fig. 2, each braking element in this embodiment is provided with two hydraulic cylinders 412, the output ends of the two hydraulic cylinders 412 are fixed with the opposite ends of the brake pads 411, so that the brake pads 411 can be driven by the two hydraulic cylinders 412 together to move towards the guide rail 2, so that the brake pads 411 are in contact fit with the guide rail 2, for example, the friction force between the brake pads 411 and the guide rail 2 can be used for braking the car against the force opposite to the direction of the friction force applied to the brake pads 411, wherein the brake pads 411 are in direct contact with the guide rail 2, when the braking command is executed by the braking device 4, the brake pads 411 have a pressure perpendicular to the guide rail under the action of the output ends of the hydraulic cylinders, the brake pads 411 can generate friction force with the guide rail 2 along the direction of the guide rail, and the friction force between the brake pads 411 and the guide rail is enough to overcome the force opposite to the direction of the friction force applied to the brake pads 411, so that the car is stopped by the brake disc 411. The advantage of making the car stop through the frictional force between braking piece 411 and the guide rail is that can make the process that the car stopped more steady, the condition that can not appear suddenly stopping to do not receive the restriction of car 1 along the direction of motion of guide rail 2, adopt two hydraulic cylinder drive braking pieces, can guarantee that the atress between braking piece 411 and the guide rail 2 is even, can also guarantee the security of braking piece 411 motion simultaneously.

Of course, it is obvious to those skilled in the art that one hydraulic cylinder 412 may be provided, and the output end of the hydraulic cylinder 412 is connected to the middle position of the brake pad 411, so that the brake pad 411 can be driven as well.

In one embodiment of the present disclosure, hydraulic rams 412 in all of braking devices 4 may be controlled by a hydraulic master cylinder, such that simultaneous movement of all hydraulic rams 412 may be controlled by the hydraulic master cylinder. Specifically, referring to fig. 3 and 4, a master cylinder 43 is arranged in the braking device 4, the master cylinder 43 is connected with all the hydraulic cylinders through hydraulic oil paths 42, and the master cylinder 43 supplies oil pressure to all the hydraulic cylinders through the hydraulic oil paths 42 under the action of the driving end of the master cylinder, and in the process, the oil pressure in each hydraulic cylinder 412 is the same, so that management and control are convenient.

Referring to fig. 4, the hydraulic master cylinder 43 includes a piston 431 disposed in a cylinder and a driving rod 432 for driving the piston 431 to move in the cylinder, so that when the driving rod 432 drives the piston 431 to move in the cylinder, oil pressure can be provided to the hydraulic oil path 42 to enable the hydraulic cylinders to act synchronously.

In the embodiment shown in fig. 3 and 4, two braking devices 4 are provided, two braking devices 4 are respectively arranged on two sides of the car 1, and each braking device 4 comprises two braking elements, and each braking element comprises two hydraulic oil cylinders. Accordingly, eight hydraulic cylinders 412 are provided in total, and each two hydraulic cylinders drive the same brake piece 411, and the two brake pieces 411 brake opposite sides of the guide rail 2. The eight hydraulic oil cylinders 412 are communicated with the hydraulic master cylinder 43 through the hydraulic oil passages 42, so that the hydraulic oil passages 42 can be controlled to act together through the hydraulic master cylinder 43, and the action consistency of each brake disc 411 is ensured.

In one embodiment of the present disclosure, referring to fig. 4, an oil valve 61 is provided in the hydraulic oil passage 42, and one end of the oil valve 61 is communicated with the hydraulic oil passage 42 and the other end is communicated with a fluid replacement device. The oil pressure in the hydraulic oil path 42 can be adjusted by the oil valve 61, when the oil valve 61 is opened, the hydraulic oil flows from the fluid replenishing device to the hydraulic oil path 42 through the oil valve 61 for oil replenishment, or flows from the hydraulic oil path 42 to the fluid replenishing device through the oil valve 61 for pressure relief, and the oil pressure in the hydraulic oil path can meet the requirement that the output end of the hydraulic oil cylinder 412 outputs enough acting force to the brake pad 411 through oil replenishment and pressure relief, so as to ensure the effectiveness of the braking device 4.

To explain the technical solution of the present disclosure in more detail, the specific structure of the oil valve 61 is shown in fig. 5, and includes: a seat 612 having a liquid channel 611, and a valve ball 614 disposed in said liquid channel 611 by a spring 613, said valve ball 614 being configured to block said liquid channel 611 under the action of the spring 613. In the initial state, the valve ball 614 blocks one end of the fluid passage 611 adjacent to the fluid replacement device under the action of the spring 613. When the ball 614 is subjected to an external force, it will move to one side of the hydraulic oil path 42 against the elastic force of the spring 613 to open the liquid channel 611, and at this time, the hydraulic oil can flow from the hydraulic oil path 42 to the fluid infusion device for pressure relief; alternatively, the hydraulic oil may flow from the fluid replenishing device to the hydraulic oil passage 42 to replenish the hydraulic oil passage 42. When the fluid passage 611 is open at the time of no power source, the flow direction of the hydraulic oil depends on the pressure difference between the hydraulic oil passage 42 and the fluid replacement device, and for example, when the oil pressure in the hydraulic oil passage 42 is greater than the oil pressure in the fluid replacement device, the hydraulic oil flows from the hydraulic oil passage 42 in the direction of the fluid replacement device.

In the embodiment of the present disclosure, the liquid passage 611 connects the hydraulic oil passage 42 and the fluid replacement device, and the hydraulic oil circulates in the hydraulic oil passage 42 and the fluid replacement device only through the liquid passage 611, so that the oil pressure in the hydraulic oil passage 42 can be ensured to be stable.

In one embodiment of the present disclosure, the replenishment of the hydraulic line 42 may be accomplished by an oil valve 61. In the embodiment of fig. 4, when the hydraulic master pump 43 is in a reset state, a certain degree of vacuum negative pressure is formed in the hydraulic oil passage 42. The magnitude of the vacuum negative pressure depends on whether the hydraulic oil path 42 is short of oil, and when the hydraulic oil path 42 is short of oil, the hydraulic master cylinder 43 forms a larger vacuum negative pressure in the hydraulic oil path 42. When the vacuum negative pressure in the hydraulic passage 42 is greater than the elastic force of the spring 613, the ball 614 moves toward the hydraulic passage 42 against the elastic force of the spring 613, the ball 614 leaves the initial position, the fluid passage 611 is opened, hydraulic oil flows from the fluid replacement device to the hydraulic passage 42 through the fluid passage 611 under the action of the vacuum negative pressure in the hydraulic passage 42, the vacuum negative pressure in the hydraulic passage 42 gradually decreases, when the vacuum negative pressure in the hydraulic passage 42 is less than the elastic force of the spring 613, the ball 614 moves toward the fluid replacement device under the action of the elastic force of the spring 613, the fluid passage 611 is closed when the ball 614 returns to the initial position, the flow of hydraulic oil in the fluid passage 611 stops, and the fluid replacement process is completed. The process does not require human intervention.

In one embodiment of the present disclosure, in order to ensure that the oil pressure of the hydraulic circuit 42 meets the working condition, when the working hydraulic master cylinder in the hydraulic circuit 42 is reset and fails, additional manual pressure relief is required, referring to fig. 5, a movable element 615 is disposed on a base 612, one end of the movable element 615 extends out of the base 612, and the other end of the movable element 615 extends into a fluid passage 611 and cooperates with a valve ball 614. When the hydraulic oil path 42 needs additional manual pressure relief, the movable member 615 is pushed to extend into the liquid channel 611 and contact with the ball 614, the ball 614 moves towards the hydraulic oil path 42 against the elastic force of the spring 613, the ball 614 leaves the initial position, at this time, hydraulic oil flows from the hydraulic oil path 42 to the fluid infusion device through the liquid channel 611, when the oil pressure in the hydraulic oil path 42 meets the working requirement, the movable member 615 moves towards one end extending out of the base, the acting force on the ball 614 is reduced, under the action of the elastic force of the spring 613, the ball 614 returns to the initial position, at this time, the liquid channel 611 is closed, and the pressure relief process is completed. By the method, the braking state between the car 1 and the guide rail 2 can be manually released when the hydraulic master cylinder 43 is reset and fails.

In one embodiment of the present disclosure, another oil valve 61 may be separately provided to relieve the pressure of the hydraulic oil passage 42.

In one embodiment of the present disclosure, in order to detect the oil pressure in the hydraulic oil path 42, a pressure detecting device 44 is installed on the hydraulic oil path 42 to ensure that the oil pressure in the hydraulic oil path 42 can continuously ensure that the hydraulic oil cylinder 412 outputs sufficient torque to the brake pads 411 under the action of the hydraulic master cylinder 43, and ensure that sufficient friction exists between the brake pads 411 and the guide rail 2 to brake the car 1.

Referring to fig. 6, in order to implement the braking function of the above device, the present disclosure provides an intelligent elevator car braking control method, including:

s101, receiving an elevator state signal sent by a main control unit 3;

s102, judging whether the elevator state is abnormal or not according to the elevator state signal;

and S103, if yes, sending a braking instruction to the braking device 4, and sending abnormal information to the main control unit 3.

The elevator status signal sent by the main control unit 3 is information related to the running status of the elevator, and those skilled in the art will understand that the description is not given here, but in the following embodiments, different types of signals received in different determination situations will be described.

The elevator state is judged whether to be abnormal or not according to the elevator state signal, the braking control unit 5 judges according to the received elevator state signal, and the braking control unit 5 sends a braking instruction to the braking device 4 when judging that the elevator state is abnormal.

The process is that the braking control unit 5 judges through the received elevator state signal, the use of the main control unit 3 is not influenced, and the main control unit 3 can still control the elevator to normally run. The braking control unit 5 can immediately send a braking instruction to the braking device 4 based on the abnormity existing in the elevator state of the signal expressing the elevator running state in the main control unit 3, the braking device 4 timely brakes the car 1 and timely feeds the abnormal information back to the main control unit 3 for the maintenance personnel to timely maintain, and the hidden danger of accidents is reduced.

In one type of abnormal situation determination, the elevator status signal received by the braking control unit 5 includes a normal signal and a start signal.

The normal signal is an elevator state signal used for representing normal operation of the car 1 and is also a signal corresponding to the fault signal, and if the elevator main control unit 3 sends the normal signal, it is determined that no fault exists in the normal operation of the car 1.

The starting signal is a signal used by the main control unit to control the operation of the car 1, for example, after a user presses a floor button, the main control unit 3 receives a floor signal that the user needs to reach, and then sends a starting signal for controlling the car 1 to move to the floor needed by the user according to the current operation state of the car 1, and the car 1 moves according to the starting signal.

In practical application, if the starting signal is received but the normal signal is not received, which indicates that the elevator receives the starting signal in the fault state, and the running of the car 1 has a large risk in the fault state, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking instruction to the braking device 4, so that the braking device 4 locks the guide rail 2, and can feed back abnormal information to the main control unit 3, so that the elevator can only start the car 1 to run in the normal state, and the safety of the elevator is improved.

In one type of abnormal situation judgment, the elevator status signals received by the braking control unit 5 include a normal signal for indicating normal operation of the car, a start signal for controlling movement of the car, and a speed signal for indicating the speed of operation of the car.

The speed signal is an elevator state signal for representing the running speed of the car 1, and when the car 1 moves, the main control unit 3 sends a speed signal to the braking control unit 5, for example, the main control unit 3 obtains the real-time speed of the car 1 through a speed sensor arranged on the car 1. It is also possible that the speed sensor transmits the obtained speed signal directly to the braking control unit 5 without being relayed via the main control unit 3.

In practical applications, in the case where the braking control unit 5 does not receive any of the normal signal and the activation signal, for example, the braking control unit 5 receives the normal signal and the speed signal, but does not receive the activation signal. It may be that the main control unit 3 is malfunctioning, or the car 1 is malfunctioning or disturbed by an abnormal signal.

In case the braking control unit 5 does not receive a normal signal, a start signal and a speed signal are received, indicating that the main control unit 3 is faulty or that a movement command is received in case of a fault of the elevator and that a movement in any direction is generated.

When the situation occurs, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking instruction to the braking device 4 so that the braking device 4 locks the guide rail 2 and can feed back abnormal information to the main control unit 3, so that the elevator can only start the operation of the car 1 in a normal state, and the safety of the elevator is improved.

In an abnormal condition judgment, the elevator state signals received by the braking control unit 5 comprise normal signals for representing normal running of the car 1, starting signals for controlling running of the car 1, maintenance signals for representing that the car 1 is in a maintenance state currently, maintenance running signals for representing that the car 1 needs to run in the maintenance state and speed signals for representing running speed of the car 1.

The maintenance signal for the present elevator state signal that is in the maintenance state of sign car 1, when the elevator was in the maintenance state, main control unit 3 sent the maintenance signal to braking control unit 5, for example when the elevator had the trouble or when carrying out periodic maintenance to the elevator, the technical staff need start elevator maintenance state earlier and then carry out maintenance work, and main control unit 3 can send the maintenance signal to braking control unit 5 this moment.

And the overhaul operation signal is used for representing an elevator state signal which allows the car 1 to operate in an overhaul state, and when the elevator is in the overhaul state, if the elevator needs to move, the main control unit 3 sends the overhaul operation signal to the braking and stopping control unit 5 after the overhaul operation state is started.

In practical application, if the braking control unit 5 receives a start signal and an overhaul running signal in the state of a normal signal and an overhaul signal, and does not receive a speed signal within a preset time, the car 1 does not move at the moment, possibly because the elevator is blocked or an elevator traction machine brake is not released, for example, the preset time is set to 2.0 seconds (time adjustable range: 1.0 second-5.0 seconds), when the braking control unit 5 does not receive the speed signal within 2 seconds after receiving the start signal, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking instruction to the braking device 4, so that the braking device 4 locks the guide rail 2, and can feed back abnormal information to the main control unit 3. The potential safety hazard caused by abnormal conditions such as elevator blockage or elevator traction machine or main control unit 3 circuit can be avoided in the process, the car 1 is stopped in time, and the maintenance of workers is facilitated.

In a judgment situation, if the braking and stopping control unit 5 receives no one of the maintenance operation signal and the starting signal but receives the speed signal under the condition of receiving the normal signal and the maintenance signal, the elevator is in a maintenance state and is not allowed to perform maintenance operation, and the elevator car 1 moves in any direction along the guide rail 2; or, when the elevator is in the maintenance state and the main control unit 3 does not start the operation of the car 1, the car 1 moves in any direction along the guide rail 2, and when the situation shows that the car 1 has a fault or the main control unit 3 is interfered by other signals at this time, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking instruction to the braking device 4, so that the braking device 4 locks the guide rail 2, and can feed back abnormal information to the main control unit 3. The process can avoid the out-of-control car 1 caused by the fault of the car 1 or the interference of the abnormal signal received by the main control unit 3, and the car 1 is stopped in time, so that the maintenance of workers is facilitated.

In one judgment case, the elevator state signals received by the braking control unit 5 include a door zone signal for indicating that the car 1 arrives at the door zone, a car door opening signal for indicating that the car door is opened, and a hall door synchronization signal for indicating that the car door and the hall door are synchronized.

And the door zone signal is used for representing an elevator state signal when the elevator car 1 arrives at the door zone, the door zone signal is activated when the elevator car 1 moves to the elevator door zone, and the door zone signal is disconnected when the elevator car moves out of the door zone. For example, corresponding sensors are arranged at the relative positions of the car and the door area, when the sensors are activated, the car enters the door area, and a signal of the door area is activated; when the car moves outside the door zone, the door zone signal is off.

The sedan-chair door is opened the signal for the elevator state signal that the representation sedan-chair door was opened, begin to open to the sedan-chair door in-process that opens completely from the sedan-chair door, sedan-chair door is opened the signal and is in the activated state, when the sedan-chair door is closed completely, sedan-chair door is opened the signal and is broken, for example at sedan-chair door initiative door installation pressure type switch, pressure type switch is configured as when the sedan-chair door is closed completely, pressure type switch is in the on-state, main control unit 3 judges that the sedan-chair door closes, in-chair door is opened to the in-process that opens completely, pressure type switch is in the off-state, main control unit 3 judges that the sedan-chair door is opened.

And the hall door synchronous signal is used for representing an elevator state signal of the car door and the hall door, the hall door can synchronize the car door to perform switching action in the car door switching process, and the hall door synchronous signal is activated at the moment.

In practical application, when the braking control unit 5 receives a hall door signal, if any one of a car door opening signal and a hall door synchronization signal is not received in a preset time, which indicates that the car 1 enters a door zone, the car door is not opened in advance as required; or when the car door is opened, the hall door is not opened synchronously, which indicates that the car door is in failure or the hall car door is in linkage failure, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking instruction to the braking device 4, so that the braking device 4 locks the guide rail 2, and can feed back abnormal information to the main control unit 3. The accident that causes because elevator room sedan-chair door breaks down can be avoided in this process, in time makes 1 system of car stop, makes things convenient for staff's maintenance.

In one judgment case, the elevator state signals received by the braking control unit 5 include a door zone signal for indicating that the car 1 arrives at the door zone, a car door opening signal for indicating that the car door is opened, a hall door synchronization signal for indicating that the car door and the hall door are synchronized, and a speed signal for indicating the running speed of the car 1.

When the car 1 moves in the door area, the car door and the hall door can be opened in advance within a preset speed range, so that the door opening efficiency of the car 1 in the floor stopping process can be improved, for example, in the floor stopping process after the car 1 enters the door area, if the running speed of the car 1 meets the preset speed, the hall car door can be opened in advance, for example, the preset speed is set to be lower than 0.2m/s (the adjustment range is 0.1 m/s-0.3 m/s), when the running speed of the car 1 is lower than 0.2m/s, the hall car door is opened in advance, and when the car 1 stops at the floor completely, the hall door is opened completely, so that the door opening efficiency of the car 1 can be effectively improved.

In practical application, when the braking control unit 5 receives the car door opening signal and the speed signal, if any one of the hall door synchronization signal and the door zone signal is not received, it indicates that the hall door is not opened synchronously in the process of opening the car door in the process of running the elevator. Or, if the elevator is indicated to open the door outside the door area, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking instruction to the braking device 4, so that the braking device 4 locks the guide rail 2, and can feed back abnormal information to the main control unit 3. The process can prevent danger caused by someone taking off the door when a hall car door is in failure or the elevator runs in a non-door area, the car 1 is stopped in time, and the overhaul of workers is facilitated.

In one decision case, the elevator status signals received by the braking control unit 5 include an end stop signal for indicating the movement of the car 1 to the end stop area and a speed signal for indicating the movement speed of the car 1.

And the terminal station signal is used for indicating that the car 1 moves to a terminal station area, the terminal station signal is activated when the car 1 enters the terminal station, and the terminal station signal is disconnected when the car 1 leaves the terminal station. For example, two mechanical switches or electronic switches can be vertically installed on the car 1, when the car 1 enters an end station, the two switches are sequentially switched on, the main control unit 3 receives a signal that the car 1 enters the end station, the main control unit 3 can judge the running direction of the car 1 at the end station according to the triggering sequence of the two switches, the effectiveness of the two switches can be judged according to the triggering conditions of the two switches, and if one of the switches is not activated, the switch is proved to be failed, and the maintenance can be performed in time.

In practical application, when the car 1 moves towards the terminal station direction until the braking control unit 5 receives a terminal station signal, if the speed value in the received speed signal exceeds a threshold value, which indicates that the car 1 runs at the terminal station in an overspeed manner, the braking control unit 5 determines that an abnormal state exists in the elevator, and the braking control unit 5 sends a braking instruction to the braking device 4, so that the braking device 4 locks the guide rail, and can feed back abnormal information to the main control unit 3. This process can prevent that car 1 from speeding the danger that causes at the end station operation, in time makes car 1 stop, makes things convenient for staff's maintenance.

In one decision case, the elevator status signals received by the braking control unit 5 comprise a door zone signal indicating the arrival of the car 1 in the door zone, an end stop signal indicating the movement of the car 1 to the end stop zone and a speed signal indicating the movement speed of the car 1.

In the presence of the terminal station signal, a door zone signal is received, which indicates the door zone range of the car 1 running to the terminal station, as described above for the door zone state, the terminal station signal and the door zone signal can be triggered by two devices, and the state of the car 1 at the terminal station and the state of the car 1 at the door zone can be superimposed, for example, when the car 1 is in the door zone except the terminal station, only the device for detecting the position of the car 1 in the door zone is activated, the main control unit 3 determines that the car 1 is in the door zone, only the door zone signal is sent to the braking control unit 5, when the car 1 enters the door zone of the terminal station and moves to the door zone, the device for detecting the position of the car 1 in the terminal station and the door zone is activated, the main control unit 3 determines that the car is in the door zone of the terminal station, and the terminal station signal and the door zone signal are sent to the braking control unit 5.

In practical applications, when the stopping control unit 5 receives the terminal station signal and the door zone signal, and when the car 1 restarts operation, if it is determined that the operation direction of the car 1 is opposite to the direction of allowing the car 1 to move, indicating that the car 1 restarts operation in the terminal station door zone, the stopping control unit does not move according to the allowed direction of the car 1, for example: when the car 1 is restarted at the upper end station door area, the allowed movement direction of the car 1 is downward along the guide rail 2, or when the car 1 is restarted at the lower end station door area, the allowed movement direction of the car 1 is upward along the guide rail 2, so that in order to avoid top rushing and bottom squating, the car 1 can only move along the guide rail in the allowed direction of the end station when being restarted at the end station door area. If the situation occurs, the braking control unit 5 determines that the elevator state is abnormal, and the braking control unit 5 sends a braking command to the braking device 4 so that the braking device 4 locks the guide rail and can feed back abnormal information to the main control unit 3. This process can avoid 1 dashing the top of car and causing damage and the injury to the passenger at the bottom of the cage to 1, in time makes 1 system of car stop, makes things convenient for staff's maintenance.

In one decision case, the elevator status signals received by the braking control unit 5 include an end stop signal for indicating the movement of the car 1 to the end stop area, a door zone signal for indicating the arrival of the car 1 at the door zone, and a speed signal for indicating the movement speed of the car 1.

In practical applications, when the car moves to the terminal station direction until the braking control unit 5 continuously receives the speed signal, the terminal station signal and the door zone signal, if the speed signal is not disconnected but the door zone signal is disconnected, it can be understood that the car 1 moves from outside the terminal station to inside the terminal station and inside the door zone, but the car 1 stops at the door zone and continuously moves to the terminal station direction. When the car 1 continues to move to the exit door zone, the action of top-rushing or bottom-rushing is considered to occur. For example, in the upper end station door zone, the car 1 keeps moving out of the upper end station door zone at the speed of moving upwards along the guide rail, or in the lower end station door zone, the car 1 keeps moving out of the lower end station door zone at the speed of moving downwards along the guide rail, if the above situation occurs, the situation that the elevator is about to generate top rushing and bottom rushing at the moment is explained, the braking control unit 5 determines that the state of the elevator is abnormal, and the braking control unit 5 sends a braking command to the braking device 4 so that the braking device 4 locks the guide rail, and can feed back abnormal information to the main control unit 3. This process can avoid 1 dashes the top of car and squats the end and cause damage and the injury to the passenger to 1 car, in time makes 1 system of car stop, makes things convenient for staff's maintenance.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims (9)

1. The utility model provides an elevator car intelligence system of stopping control system which characterized in that includes:

a car (1), the car (1) being configured for guiding engagement with a guide rail (2);

a main control unit (3);

the braking device (4) is arranged on the car (1) and is configured to be matched with the guide rail (2) together, and the braking of the car (1) is controlled according to a braking instruction of a braking control unit (5).

2. Elevator car intelligent braking control system according to claim 1, characterized in that the braking device (4) comprises at least two braking elements, which are configured to fit together with opposite sides of the guide rail (2).

3. The elevator car intelligent braking control system according to claim 2, characterized in that the braking elements comprise a brake pad (411) and an electrically actuated device, the brake pad (411) being connected to the output of the electrically actuated device and being configured such that when the braking device (4) executes a braking command, the brake pad (411) moves in the direction of the guide rail (2) under the effect of the output of the electrically actuated device to cooperate with the guide rail (2).

4. The elevator car intelligent braking control system according to claim 2, characterized in that the braking elements comprise a brake pad (411) and a hydraulic oil cylinder (412), the brake pad (411) is connected with the output end of the hydraulic oil cylinder (412) and is configured to move towards the guide rail (2) under the action of the output end of the hydraulic oil cylinder (412) to be matched with the guide rail (2) when the braking command is executed by the braking device (4).

5. The elevator car intelligent braking control system according to claim 4, wherein the braking device (4) comprises a hydraulic master cylinder (43), the hydraulic master cylinder (43) is connected with a hydraulic oil cylinder (412) in the braking device (4) through a hydraulic oil circuit (42), and is configured to provide oil pressure to the hydraulic oil circuit (42) when the braking device (4) executes a braking command, so that the hydraulic oil cylinder (412) drives a brake block (411) to move towards the guide rail (2).

6. The elevator car intelligent braking control system of claim 5, further comprising a fluid replacement device in communication with the hydraulic circuit (42) through an oil valve (61); the oil valve (61) is configured so that when opened, hydraulic oil flows from the fluid replacement device to the hydraulic oil passage (42) for fluid replacement, or flows from the hydraulic oil passage (42) to the fluid replacement device for pressure relief.

7. The elevator car intelligent braking control system of claim 6, wherein the oil valve (61) comprises a base (612) having a liquid channel (611), and a valve ball (614) disposed in the liquid channel (611) by a spring (613), the valve ball (614) being configured to block the liquid channel (611) under the action of the spring (613).

8. The elevator car intelligent braking control system according to claim 7, wherein during the resetting of the hydraulic master pump (43), when the vacuum negative pressure in the hydraulic oil circuit (42) is greater than the elastic force of the spring (613), the valve ball (614) is configured to move in the direction of the hydraulic oil circuit (42) against the elastic force of the spring (613) to open the liquid passage (611), and the hydraulic oil flows from the liquid replenishing device to the hydraulic oil circuit (42) for replenishing oil.

9. The elevator car intelligent braking control system of claim 8, wherein a moving member (615) is further provided on the base (612), one end of the moving member (615) extending out of the base (612) and the other end extending into the liquid passage (611) and engaging with the valve ball (614).

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