Lifting equipment control system and lifting equipment

Abstract

The lifting equipment control system comprises a machine room master controller and a driving part, the machine room master controller is arranged in a control cabinet outside a hall, and the driving part is arranged in a hoistway. The machine room master control part and the driving part are separately arranged, the machine room master control part is arranged in the control cabinet outside the hall, the driving part is arranged in the control cabinet in the hoistway, due to the fact that the number of the machine room master control parts is small, integrated design is adopted, wiring is few, on-site problem analysis and troubleshooting are convenient, the cabinet body is small in size, and the influence on user decoration is not large when the cabinet body is installed outside the hall. Besides, due to the fact that the cabinet bodies are in communication connection with the driving part, the two cabinet bodies can be separated from each other by a long distance, a user can choose to install a machine room master controller at other farther positions, and influences on decoration outside a hall are avoided.

Description

Technical Field

[0001] The utility model relates to the technology of lifting equipment, in particular to a control system for lifting equipment and a lifting equipment. Background Art

[0002] A lifting equipment refers to a mechanical device used for vertically transporting articles, which can help objects to be transferred, lifted or lowered between different heights. With the development of the economy and people's demand for high-quality life, elevators, a special type of lifting equipment, have gradually entered household users.

[0003] Currently, the following problems usually exist in the household elevator control cabinet: the elevator control cabinet is large in volume, which is likely to affect the user's decoration when installed outside the hall, and affects the hoistway layout when installed in the hoistway. The system architecture is complex, with many signal connections and cable configurations, resulting in more on-site wiring man-hours, increased material costs and labor costs. There are many electrical components and complex signal connections, which make the on-site problem analysis and troubleshooting cumbersome. The control part is installed in the hoistway, which is not convenient for engineers to debug and maintain. Summary of the Utility Model

[0004] The utility model provides a control system for lifting equipment and a lifting equipment, which can separately arrange the main control in the machine room and the driving part, facilitating on-site problem analysis and troubleshooting and avoiding affecting the decoration outside the hall.

[0005] In a first aspect, the utility model provides a control system for lifting equipment, including:

[0006] A main control in the machine room, which is arranged in a control cabinet outside the hall and is communicatively connected with a safety switch;

[0007] A driving part, which is arranged in the hoistway. The driving part includes a variable-frequency driving module and a safety braking control module. The main control in the machine room is respectively connected with the variable-frequency driving module and the safety braking control module. The safety braking control module is connected in the power supply circuit of the brake coil and is connected with the safety torque off unit in the variable-frequency driving module to supply power to the safety torque off unit. The variable-frequency driving module is connected with a traction machine;

[0008] The main control in the machine room is configured to disconnect the power supply of the safety braking control module when detecting that the safety switch is disconnected, so as to disconnect the power supply circuit of the brake coil and cut off the power supply of the safety torque off unit.

[0009] Optionally, the driving part further includes a power supply module, which is connected with an external power supply and is respectively connected with the variable-frequency driving module, the safety braking control module and the main control in the machine room for supplying power to the variable-frequency driving module, the main control in the machine room and the brake coil.

[0010] Optionally, the power supply module includes a main power supply, an automatic power failure rescue power supply, a first switching power supply, and a second switching power supply. The main power supply is connected to the variable frequency drive module. The automatic power failure rescue power supply, the first switching power supply, and the second switching power supply are all connected to the safety brake control module and the machine room main control. The first switching power supply is also connected to the car call device.

[0011] Optionally, the drive part further includes a storage battery, and the storage battery is connected to the power supply module to provide emergency power supply for the variable frequency drive module, the brake coil, and the machine room main control through the power supply module.

[0012] Optionally, the drive part further includes a circuit protection module, and the circuit protection module is arranged between the external power supply and the power supply module. When the voltage or current exceeds the threshold value, the circuit protection module cuts off the power supply of the external power supply.

[0013] Optionally, the machine room main control is respectively connected to the car speed limiter, the landing door lock, the hoistway safety switch, the hoistway lighting fixture, and the car call device.

[0014] Optionally, the lift equipment control system further includes a car main control, and the car main control is arranged on the car. The car main control is connected to the machine room main control through a trailing cable.

[0015] Optionally, the car main control is respectively connected to the car door lock, the door machine, the hoistway safety switch, the car position detection device, the car ventilation equipment, and the car lighting equipment.

[0016] Optionally, the car main control is respectively connected to the power failure power supply and the switching power supply, and both the power failure power supply and the switching power supply are connected to the car door lock, the door machine, the car position detection device, the car ventilation equipment, and the car lighting equipment.

[0017] In a second aspect, the present utility model provides a lift equipment, including the lift equipment control system provided in the first aspect of the present utility model.

[0018] The lifting equipment control system provided by the present utility model includes a machine room main control and a driving part. The machine room main control is arranged in a control cabinet outside the hall, and the driving part is arranged in the hoistway. The driving part includes a variable frequency drive module and a safety brake control module. The machine room main control is respectively connected to the variable frequency drive module and the safety brake control module. The safety brake control module is connected in the power supply circuit of the brake coil and is connected to the safety torque off unit in the variable frequency drive module to supply power to the safety torque off unit. The variable frequency drive module is connected to the traction machine. The machine room main control is configured to disconnect the power supply of the safety brake control module when detecting that the safety switch is disconnected, so as to disconnect the power supply circuit of the brake coil and cut off the power supply of the safety torque off unit. In the present utility model, the machine room main control and the driving part are separately arranged. The machine room main control is arranged in a control cabinet outside the hall, and the driving part is arranged in a control cabinet in the hoistway. Since the number of components of the machine room main control is small and an integrated design is adopted, the wiring is less, which is convenient for analyzing and troubleshooting on-site problems. In addition, the cabinet body is small in volume, and installing it outside the hall has little impact on the user's decoration. Moreover, due to the communication connection with the driving part, the two cabinet bodies can be separated by a relatively long distance, and the user can choose to install the machine room main control at other positions farther away to avoid affecting the decoration outside the hall. Description of the Drawings

[0019] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0020] Figure 1 It is a schematic structural diagram of a lifting equipment control system provided by an embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of another lifting equipment control system provided by an embodiment of the present utility model;

[0022] Figure 3 It is a safety circuit framework diagram provided by an embodiment of the present utility model. Detailed Embodiments

[0023] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present utility model clearer, the technical solutions of the embodiments of the present utility model will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0026] Figure 1 The following is a schematic structural diagram of a lifting equipment control system provided by an embodiment of the present utility model. Taking the lifting equipment as an elevator as an example, as Figure 1 shown, the lifting equipment control system includes:

[0027] The machine room main control 110 is arranged in the control cabinet outside the hall. The machine room main control 110 is communicatively connected to the safety switch. In the embodiment of the present utility model, each safety component of the elevator is equipped with a safety switch, and each safety switch is communicatively connected to the machine room main control 110.

[0028] The driving part 120 is arranged in the hoistway. The driving part 120 includes a variable-frequency driving module 121 and a safety brake control module SBC (Safe Brake Control). The main control unit 110 in the machine room is respectively connected to the variable-frequency driving module 121 and the safety brake control module SBC. The safety brake control module SBC is connected in the power supply circuit of the brake coil. The safety brake control module SBC is connected to the safe torque off unit STO (Safe Torque Off) in the variable-frequency driving module 121 to supply power to the safe torque off unit STO. The variable-frequency driving module 121 is connected to the traction machine. The variable-frequency driving module 121 integrates a main circuit power-on buffer circuit and a variable-frequency driving circuit to provide a power driving power supply for the system, integrates the variable-frequency microcomputer control function, is communicatively connected to the main control unit in the machine room through a variable-frequency driving interface circuit, and drives the traction machine to operate according to the control signal of the main control unit in the machine room. The safety brake control module SBC provides a safety output signal for controlling the brake, controls the brake coil to be energized, and the brake brake is applied. The safety brake control module SBC replaces the running contactor and the brake contactor, realizes the design of the control cabinet without contactors, reduces the noise of the control cabinet, and improves the user experience. When the safe torque off unit STO is activated, the frequency converter stops supplying electric energy that can generate torque to the motor, ensuring that the energy generating torque will not continue to affect the traction machine, and the traction machine stops due to the loss of electric energy. When the safe torque off unit STO is activated, it can also prevent the accidental start of the traction machine. The safety brake control module SBC is connected to the safe torque off unit STO. When the safety brake control module SBC is activated, the safe torque off unit STO is also activated at the same time, that is, when the brake brake is applied, the energy generating torque of the variable-frequency driving module 121 will not continue to affect the traction machine, and the traction machine stops due to the loss of electric energy and is braked by the friction force of the brake brake, thereby realizing the emergency stop of the car.

[0029] Exemplarily, when the elevator main control 110 detects that any safety switch is disconnected, the power supply of the safety brake control module SBC is disconnected. The safety brake control module SBC is de-energized and activated, the power supply circuit of the brake coil is disconnected, and the brake brake is applied. At the same time, the safe torque off unit STO is de-energized and activated, and the energy generating torque of the variable-frequency driving module 121 will not continue to affect the traction machine. The traction machine stops due to the loss of electric energy and is braked by the friction force of the brake brake, thereby realizing the emergency stop of the car.

[0030] When the brake needs to be applied during the normal operation of the elevator, the main control unit 110 in the machine room receives the leveling signal and sends a control signal to the safety brake control module SBC. The safety brake control module SBC disconnects the power supply circuit of the brake coil, and the brake is applied. At the same time, the main control unit 110 in the machine room sends a control signal to the safety torque off unit STO, and the safety torque off unit STO operates. The energy generated by the variable frequency drive module 121 to produce torque will no longer affect the traction machine. The traction machine stops due to the loss of electrical energy and relies on the friction of the brake to stop, thus realizing the slow leveling of the car.

[0031] The elevator equipment control system provided by the embodiment of the present invention includes a main control unit in the machine room and a drive part. The main control unit in the machine room is arranged in the control cabinet outside the hall, and the drive part is arranged in the hoistway. The drive part includes a variable frequency drive module and a safety brake control module. The main control unit in the machine room is respectively connected to the variable frequency drive module and the safety brake control module. The safety brake control module is connected in the power supply circuit of the brake coil. The safety brake control module is connected to the safety torque off unit in the variable frequency drive module to supply power to the safety torque off unit. The variable frequency drive module is connected to the traction machine. The safety brake control module is activated when the safety circuit is disconnected, disconnects the power supply circuit of the brake coil, and stops supplying power to the safety torque off unit. In the present invention, the main control unit in the machine room and the drive part are separated and arranged. The main control unit in the machine room is arranged in the control cabinet outside the hall, and the drive part is arranged in the control cabinet in the hoistway. Since the number of components of the main control unit in the machine room is small and it adopts an integrated design, with less wiring, it is convenient for on-site problem analysis and troubleshooting. In addition, the cabinet volume is small, and installing it outside the hall has little impact on the user's decoration. Moreover, since it is communicatively connected to the drive part, the two cabinets can be separated by a relatively long distance, and the user can choose to install the main control unit in the machine room at a farther other location to avoid affecting the decoration outside the hall.

[0032] Figure 2 FIG. is a schematic structural diagram of another elevator equipment control system provided by the embodiment of the present invention, as Figure 2 shown, the drive part further includes a power supply module. The power supply module is connected to an external power supply (such as commercial power), and the power supply module is respectively connected to the variable frequency drive module, the safety brake control module SBC, and the main control unit in the machine room for supplying power to the variable frequency drive module, the main control unit in the machine room, and the brake coil.

[0033] Exemplarily, as Figure 2As shown in the figure, the power supply module includes a main power supply, an automatic power rescue power supply for power failure, a first switching power supply, and a second switching power supply. Exemplarily, the main power supply is connected to the variable frequency drive module, and the automatic power rescue power supply for power failure, the first switching power supply, and the second switching power supply are all connected to the safety brake control module SBC and the machine room main control. The first switching power supply is also connected to the external call device. Exemplarily, the main power supply supplies power to the variable frequency drive module, and the automatic power rescue power supply for power failure, the first switching power supply, and the second switching power supply are all connected to the safety brake control module SBC and the machine room main control through the power control interface circuit, for supplying power to the brake coil and the machine room main control. The power control interface circuit is mainly used for voltage conversion, converting the voltage of each power supply into the voltage required by the device. The first switching power supply is dedicated to supplying power to the components that need to maintain power supply during dormancy. For example, the external call device. The automatic power rescue power supply for power failure is used to start when the external power supply fails, and supply power to the safety brake control module SBC and the machine room main control.

[0034] Exemplarily, as Figure 2 shown in the figure, the drive part further includes a storage battery, and the storage battery is connected to the power supply module, and supplies emergency power to the variable frequency drive module, the brake coil, and the machine room main control through the power supply module, providing energy for the electric brake release operation and the automatic power rescue during power failure.

[0035] Exemplarily, as Figure 2 shown in the figure, the drive part further includes a circuit protection module, and the circuit protection module is arranged between the external power supply and the power supply module. When the voltage or current exceeds the threshold, the circuit protection module cuts off the power supply of the external power supply to protect the electrical appliances in the circuit.

[0036] As Figure 2 shown in the figure, the machine room main control has:

[0037] A machine room control module, which serves as the control core component and has a main control logic control module. The main microcomputer performs control logic operations to control the operation of the elevator;

[0038] A machine room functional safety module, which accesses the safety switch signals of each system through electronic safety technology and conducts safety communication with the car functional safety module through the safety bus technology;

[0039] A power supply and brake release power control interface circuit, which is used to supply power to the machine room main control and the car main control, and connect the brake release power enable signal of the machine room main control;

[0040] A communication and brake power control interface circuit, which is used to transmit the brake control signal of the machine room main control to the power control module, and the power control module gives the brake control instruction to the power supply module;

[0041] An electric brake release interface, which is used when performing the electric brake release operation;

[0042] The electric brake release control module is connected to the communication of the power supply module and the brake power control interface circuit through the electric brake release interface;

[0043] The variable frequency drive interface circuit is communicatively connected to the variable frequency drive module. It transmits the control signal of the main control logic control module to the variable frequency drive module, thereby driving the traction machine to operate;

[0044] The overspeed governor test control module is used to perform the electric setting / reset operation of the overspeed governor switch;

[0045] The hoistway safety switch interface circuit is used to connect hoistway safety switches (such as overspeed governor switch, main machine emergency stop switch, overspeed governor rope break switch, mechanical blocking switch, pit emergency stop switch, buffer switch, etc.), and provide the switch signal to the machine room functional safety module;

[0046] The intercom system interface circuit is used to connect the intercom device;

[0047] The hoistway lighting interface circuit is used to connect hoistway lighting fixtures and can realize the control of the hoistway lighting switch;

[0048] The optional function interface circuit is used to connect the optional function cabinet for elevator function expansion;

[0049] The landing call device interface circuit is used to connect the landing call devices on each floor and give the landing call instructions for each floor through the call device;

[0050] The trailing cable interface circuit is used to connect the car main control and provide power for the car main control, such as: lighting circuit power supply, car control power supply, safety communication signal (using safety bus technology), power ground, protection ground, and other control-related signals.

[0051] As Figure 2 shown, the lifting equipment control system further includes a car main control. The car main control is arranged on the car, and the car main control is connected to the machine room main control through a trailing cable.

[0052] As Figure 2 shown, the car main control has:

[0053] The car logic judgment module is used to receive the door machine control instruction from the machine room main control, and then control the opening and closing of the elevator doors; receive the signal from the car position detection device, transmit it to the machine room main control, provide a signal for the machine room main control to judge the position, control the power supply of the car fan (ventilation equipment) and the car interior lighting (lighting equipment) according to the elevator operation state, receive the car call instruction information and transmit it to the machine room main control, and transmit the floor display information transmitted by the machine room main control to the operation panel, and provide control instructions for the voice module, etc.;

[0054] The car functional safety module accesses the signal of each safety switch in the system through electronic safety technology and communicates safely with the machine room functional safety module through the safety bus technology.

[0055] The door machine power supply and door machine control interface circuit are used to connect to the door control board and provide power supply and door machine operation control signals for the door machine.

[0056] The car fan and lighting control circuit is used to connect the car fan and the lighting inside the car, and turn on or off the power supply of the fan and lighting according to the car logic judgment module.

[0057] The interface circuit for other car devices is connected to devices such as car lighting, emergency lighting, overload switch, flashing buzzer, car socket, etc.

[0058] The control panel interface circuit is used to connect to the control panel inside the car, provide car call command information for the car logic judgment module, and receive floor display information provided by the car logic judgment module, etc.

[0059] The position detection device interface circuit is used to connect to the position detection device, forced deceleration switch or absolute position detection device, and provide car position information for the car logic judgment module.

[0060] The switching power supply interface circuit is used to connect to the car switching power supply and convert the car control power supply provided by the main cable interface circuit into the power supply required by car-related components.

[0061] The power supply interface circuit for power failure is used to connect to the power supply for power failure and supply power to the car emergency lighting and intercom system.

[0062] The interface circuit for optional functions is used to connect to relevant optional function components, such as intercoms, voice modules, etc.

[0063] The car safety switch interface circuit is used to connect to car safety switches (such as safety window switch, loose rope switch, limit switch, secondary door car lock switch, main door car lock switch, car guardrail switch, safety gear switch, mechanical stop device switch, car emergency stop switch, etc.) and provide switch signals to the car functional safety module.

[0064] The main cable interface circuit is used to connect to the main control in the machine room and transmit power supply for lighting circuit, car control power supply, safety communication signal (using safety bus technology), power ground, protection ground, and other control-related signals provided by the main control in the machine room.

[0065] Figure 3 A safety loop framework diagram provided by an embodiment of the present utility model is as Figure 3 shown. The machine room functional safety module includes:

[0066] Emergency electric operation control module, through electronic safety technology, accesses the maintenance switch, up button, common button, and down button signals, simplifies the device selection requirements, reduces the volume and cost of the above switches and buttons, and provides the signal states of the above switches and buttons to the functional safety logic processing module. The functional safety logic processing module judges and controls the state of the safety circuit according to the switch and button signals;

[0067] Door lock switch signal processing module, through electronic safety technology, accesses the main hall door lock switch and the secondary hall door lock switch, and provides the switch signal state to the functional safety logic processing module. The functional safety logic processing module judges and controls the state of the hall door lock circuit according to the door lock state and the hall / car door bypass module signal;

[0068] Safety switch signal processing module, through electronic safety technology, accesses the hoistway safety switch 2, such as buffer switch and speed governor switch, and provides the switch signal state to the functional safety logic processing module. The functional safety logic processing module judges and controls the states of the buffer switch and speed governor switch circuits according to the switch states. According to the standard requirements, when in emergency electric operation, the buffer switch and speed governor switch are allowed to be bypassed. Therefore, when the emergency electric operation control module provides a signal to the functional safety logic processing module to make the system enter the emergency electric operation state, the states of the buffer switch and speed governor switch connected to the safety switch signal processing module can be bypassed from the software;

[0069] Safety bus module, connected to the car functional safety module by means of safe communication, and receives the car safety switch state information and car maintenance operation control information transmitted by the car functional safety module;

[0070] Hall / car door bypass module, designed with connectors, detects the state of the door bypass plug-in through the functional safety logic processing module, and performs bypass processing of the door lock signal by software. The design uses disconnection as the judgment for entering the door bypass. X40DBY (hall door lock bypass) and X40GBY (car door lock bypass) are designed, and the judgment logic is as follows:

[0071] Status Emergency Stop Car Door Bypass Hoistway Door Bypass Normal X40GBY 0 0 1 1 X40DBY 0 1 0 1

[0072] Stop module, which can use an emergency stop switch, integrally installed on the electronic board of the machine room functional safety module, externally connected in series to the hoistway safety switch 1, such as main emergency stop switch, mechanical blocking switch, pit emergency stop switch, speed governor rope break switch, etc., which are not allowed to be bypassed during emergency electric operation, and internally connected to the functional safety logic processing module;

[0073] The functional safety logic processing module determines whether the switches of each safety loop in the system are in a normal state according to the status information of each safety loop related transmitted by the emergency electric operation control module, the door lock switch signal processing module, the safety switch signal processing module, the safety bus module, and the hall / car door lock bypass module. If it is normal, it gives a safety loop normal state signal; if it is abnormal, it gives a safety loop open state signal. Through the safety loop status signal, it provides control power for the safety brake control module SBC and the safety torque off unit STO. When the safety loop is open, the control power of the safety brake control module SBC and the safety torque off unit STO is disconnected; when the safety loop is normal, the control power of the safety brake control module SBC and the safety torque off unit STO is connected, thus achieving an emergency stop.

[0074] The car functional safety module includes:

[0075] The car maintenance control module accesses the maintenance switch, the up button, the common button, and the down button signals through electronic safety technology, simplifies the device selection requirements, and reduces the volume and cost of the above switches and buttons. The car maintenance control module provides the status of the above switch and button signals to the functional safety logic processing module, and the functional safety logic processing module judges and controls the safety loop status according to the switch and button signals. Through electronic safety technology, the shaft safety switch 5 is accessed, such as the mechanical stop device switch and the car guardrail switch, as one of the car maintenance status detection points and one of the safety loop detection points. According to the standard requirements, only when both of these switches are valid and the maintenance switch signal is valid can the car be maintained and operated.

[0076] The door lock switch signal processing module accesses the main car door lock switch and the auxiliary car door lock switch through electronic safety technology, and provides the switch signal status to the functional safety logic processing module. The functional safety logic processing module judges and controls the car door lock loop status according to the door lock status and the hall / car door bypass module signal.

[0077] The safety switch signal processing module accesses the shaft safety switch 4, such as the safety clamp switch, the limit switch, and the slack rope switch, through electronic safety technology, and provides the switch signal status to the functional safety logic processing module. The functional safety logic processing module judges and controls the status of the safety clamp switch, the limit switch, and the slack rope switch loop according to the switch status. According to the standard requirements, when in emergency electric operation, the safety clamp switch, the limit switch, and the slack rope switch are allowed to be bypassed. Therefore, when the emergency electric operation control module provides a signal to the functional safety logic processing module of the machine room functional safety module to make the system enter the emergency electric operation state, the status of the safety clamp switch, the limit switch, and the slack rope switch connected by the safety switch signal processing module can be bypassed from the software.

[0078] The safety bus module is connected to the machine room functional safety module in a secure communication manner, and transmits the car safety switch status information and the car maintenance operation control information to the machine room functional safety module.

[0079] The stop module can use an emergency stop switch, which is integrally installed on the electronic board of the car functional safety module. One end is externally connected in series to the hoistway safety switch 1, such as the overspeed governor rope break switch, and the other end is externally connected to the hoistway safety switch 3, such as the safety window switch, mechanical stop device switch, car emergency stop switch, etc., which are not allowed to be bypassed during emergency electric operation.

[0080] The functional safety logic processing module judges whether the switches of each safety circuit of the car are in a normal state according to the status information of each safety circuit transmitted by the car maintenance control module, the door lock switch signal processing module, and the safety switch signal processing module. If normal, it gives a normal state signal of the safety circuit; if abnormal, it gives a disconnected state signal of the safety circuit. The functional safety logic processing module is externally connected to the car emergency stop (or other switches that are not allowed to be bypassed during emergency electric operation), and the safety circuit judgment result is serially connected to the safety circuit status voting link through a physical link. In addition, the functional safety logic processing module communicates and transmits the safety circuit status, car door lock status, and car maintenance control signal to the machine room functional safety module through the safety bus module.

[0081] The functional safety processing module of the above car functional safety module judges the status of each safety circuit switch of the car according to the status information of each safety circuit transmitted by the car maintenance control module, the door lock switch signal processing module, and the safety switch signal processing module. The judgment result serves as the starting point of the voting link, and is serially connected to the judgment result of the safety circuit status by connecting the hoistway safety switch 3, the stop module of the car functional safety module, the hoistway safety switch 1, the emergency stop module of the machine room functional safety module, and the functional safety logic processing module of the machine room functional safety module to form a safety circuit status voting link. Through this link, when the car safety switch is abnormal, the control power supplies of the safety brake control module SBC and the safety torque off unit STO can be immediately disconnected from the physical link, avoiding the processing delay caused by the communication cycle of the safety bus module, enabling the system to enter the safe state faster, and being safer and more reliable. At the same time, it can reduce the emergency stop caused by the abnormality of the safety bus module (such as communication abnormality or communication line failure). The system can judge whether the system is still in a safe state according to the status of the voting link. If so, the elevator can continue to run to the leveling position and then stop serving, avoiding the elevator emergency stop and causing the problem of trapping people.

[0082] The embodiment of the present invention also provides a lifting device, which can be an elevator, such as the lifting device control system described in any of the foregoing embodiments of the present invention.

[0083] In the description of this article, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0084] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0085] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0086] The technical principle of the present utility model has been described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present utility model and cannot be construed as a limitation to the protection scope of the present utility model in any way. Based on the explanations herein, those skilled in the art can associate other specific embodiments of the present utility model without creative efforts, and these embodiments will fall within the protection scope of the present utility model.

Claims

1. A lifting equipment control system, characterized in that: include: The main control of the machine room is arranged in a control cabinet outside the hall, and the main control of the machine room is connected to the safety switch in communication; A driving part, which is arranged in the hoistway, and includes a variable frequency driving module and a safety brake control module. The machine room main control is connected to the variable frequency driving module and the safety brake control module respectively. The safety brake control module is connected to the safety torque off unit in the variable frequency driving module to supply power to the safety torque off unit. The variable frequency driving module is connected to the traction machine; The machine room master control is configured to disconnect the power supply of the safety brake control module, disconnect the power supply circuit of the brake coil, and power off the safety torque off unit when detecting that the safety switch is disconnected.

2. The lifting equipment control system according to claim 1, characterized in that: The driving part also includes a power supply module, which is connected to an external power supply. The power supply module is respectively connected to the variable frequency drive module, the safety brake control module and the machine room main control, and is used to supply power to the variable frequency drive module, the machine room main control and the brake coil.

3. The lifting equipment control system according to claim 2, characterized in that: The power supply module includes a main power supply, an automatic power failure rescue power supply, a first switch power supply and a second switch power supply. The main power supply is connected to the variable frequency drive module. The automatic power failure rescue power supply, the first switch power supply and the second switch power supply are all connected to the safety brake control module and the machine room main control. The first switch power supply is also connected to the external call device.

4. The lifting equipment control system according to claim 2, characterized in that: The driving part also includes a battery, which is connected to the power module, and provides emergency power supply for the variable frequency drive module, the brake coil and the machine room main control through the power module.

5. The lifting equipment control system according to claim 2, characterized in that: The driving part also includes a circuit protection module, which is arranged between the external power supply and the power supply module. When the voltage or current exceeds a threshold value, the circuit protection module cuts off the power supply of the external power supply.

6. The lifting equipment control system according to claim 1, characterized in that: The machine room master control is respectively connected with the car speed limiter, the hall door lock, the shaft safety switch, the shaft lighting fixture and the hall call device.

7. The lifting equipment control system according to any one of claims 1 to 6, characterized in that: It also includes a car master control, which is arranged on the car and is connected to the machine room master control via an accompanying cable.

8. The lifting equipment control system according to claim 7, characterized in that: The car master control is respectively connected with the car door lock, the door machine, the shaft safety switch, the car position detection device, the car ventilation equipment and the car lighting equipment.

9. The lifting equipment control system according to claim 8, characterized in that: The car master control is connected to a power outage power supply and a switch power supply respectively, and both the power outage power supply and the switch power supply are connected to a car door lock, a door machine, a car position detection device, a car ventilation device and a car lighting device.

10. A lifting device, characterized in that: It comprises a lifting equipment control system as described in any one of claims 1-9.

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