Operation control device and safety control system

Abstract

The utility model discloses an operation control device and a safety control system, the operation control device comprises a device power supply, an electric operation control button, a first processor and a second processor, the first end of the electric operation control button is connected with the device power supply, and the second end of the electric operation control button is connected with the input end of the first / second processor; the output end of the first processor and the output end of the second processor are connected with different voting switches respectively. The operation control device is further in communication connection with the input end of the elevator controller so as to transmit the state of the electric operation control key to the elevator controller. When the state of the electric operation control key meets the preset operation condition, the first / second processor controls the corresponding voting switch to be closed so as to conduct the elevator control loop; the elevator controller controls the main motor according to the state of the electric operation control key so as to drive the elevator to operate. The wiring length and the number of switching devices are reduced, the requirement for the switch is lowered, and the product size and cost are reduced; the voltage intensity is reduced; and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator safety maintenance and repair technology, and in particular to an operation control device and a safety control system. Background Technology

[0002] Besides controlling the elevator's movement according to control commands (such as call commands) during normal operation, it is also necessary to control the elevator's movement during maintenance and emergency situations. Specifically, during maintenance, controlling the elevator's up and down movement verifies whether it can correctly execute control commands. In emergency situations, if the elevator stops and rescue of trapped passengers is required, and the elevator is assessed to still be operational, controlling its up and down movement can move the car to a safe position. Therefore, a control device for elevator operation is needed. Existing control devices have the following shortcomings:

[0003] 1. The electronic board is large in size, has high requirements for the switches, and the product cost is high;

[0004] 2. The circuit voltage is relatively high, and the safety protection requirements when using the operation control device are relatively high. Utility Model Content

[0005] This invention provides an operation control device to address the aforementioned deficiencies in existing operation control devices.

[0006] In a first aspect, this utility model provides an operation control device, which is connected to an elevator control circuit. The elevator control circuit includes a main power supply, a power supply line, multiple voting switches installed on the power supply line, a safety execution subsystem, a main motor, and an elevator controller connected in sequence.

[0007] The operation control device includes a device power supply, an electric operation control button, a first processor, and a second processor. The first end of the electric operation control button is connected to the device power supply, and the second end of the electric operation control button is connected to the input ends of the first processor and the second processor. The output ends of the first processor and the second processor are connected to different voting switches.

[0008] The operation control device is also connected to the input terminal of the elevator controller to transmit the status of the electric operation control buttons to the elevator controller;

[0009] When the state of the electric operation control button meets the preset operating conditions, the first processor and the second processor control the corresponding voting switch to the closed state to conduct the elevator control circuit; the elevator controller controls the main motor according to the state of the electric operation control button to drive the elevator to run.

[0010] Optionally, the electric operation control buttons include a switch, an up button, a down button, and a run button. The preset operating condition is that one of the up button and the down button, as well as the switch and the run button, are all in the closed state.

[0011] Optionally, the switching switch is a signal-type self-locking switch.

[0012] Optionally, the up button, the down button, and the run button are all signal-type unlocked switches.

[0013] Optionally, the second ends of the switch, the up button, and the down button are also connected to the input end of the elevator controller.

[0014] Optionally, the switching switch includes a first switching switch and a second switching switch, wherein the first switching switch is connected to the input terminal of the first processor, and the second switching switch is connected to the input terminal of the second processor.

[0015] Optionally, the voltage range of the power supply for the device is 3V-24V.

[0016] Optionally, when the operation control device is an emergency electric operation control device, the input terminals of the first processor and the second processor are also connected to a bypass switch. When the first processor and the second processor enter the emergency electric operation control state, the bypass switch is bypassed.

[0017] The bypass switch includes at least one of the following: limit switch, safety gear safety switch, slack rope safety switch, safety gear safety switch, buffer safety switch, and speed limiter safety switch.

[0018] Optionally, when the operation control device is an emergency electric operation control device, the first processor and the second processor shall exit the emergency electric operation control state upon receiving the maintenance status signal.

[0019] Secondly, this utility model provides a safety control system, including the operation control device and elevator control circuit as described in the first aspect. The elevator control circuit includes a main power supply, a power supply line, a plurality of voting switches installed on the power supply line, a safety execution subsystem, and a main motor connected in sequence.

[0020] This utility model embodiment provides an operation control device connected to an elevator control circuit. The elevator control circuit includes a main power supply, a power supply line, multiple voting switches mounted on the power supply line, a safety execution subsystem, a main motor, and an elevator controller, all connected in sequence. The operation control device includes a device power supply, electric operation control buttons, a first processor, and a second processor. The first end of each electric operation control button is connected to the device power supply, and the second end is connected to the input ends of the first and second processors. The output ends of the first and second processors are connected to different voting switches. The operation control device also communicates with the input end of the elevator controller to transmit the state of the electric operation control buttons. When the state of the electric operation control buttons meets preset operating conditions, the first and second processors control the corresponding voting switches to a closed state to activate the elevator control circuit. The elevator controller controls the main motor according to the state of the electric operation control buttons to drive the elevator. Compared to existing operation control devices, this solution's operation control device has the following advantages:

[0021] In the operation control device of this solution, the electric operation control button is connected to the first processor and the second processor, which reduces the wiring length. The processor is used to diagnose the switching devices, which can reduce the number of switching devices, lower the requirements for the switches themselves, and also make the device integrated, reducing the product size and cost. The reduction in wiring length can also reduce the voltage intensity of the device power supply and improve the safety when using the operation control device.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an operation control device provided in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of another operation control device provided in an embodiment of the present utility model;

[0026] Figure 3This is a schematic diagram of the structure of another operation control device provided in this embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of an emergency electric operation control device provided by this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of an emergency electric operation control device in the prior art, provided by an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of a maintenance device in the prior art provided by an embodiment of this utility model. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0031] Figure 1 This is a schematic diagram of the structure of an operation control device provided in Embodiment 1 of the present utility model, as shown below. Figure 1 As shown, the operation control device 1 is connected to the elevator control circuit. The elevator control circuit includes a main power supply 21, a power supply line 22, multiple voting switches 23 installed on the power supply line 22, a safety execution subsystem 24, a main motor 25, and an elevator controller 26, connected in sequence. The main function of the safety execution subsystem 24 in the circuit is to generate electromagnetic force to control the opening and closing state of the contactor. The safety execution subsystem 24 may include motor current and brake current controllers. The main function of the main motor 25 is to provide power to drive the elevator car to move up and down. The elevator controller 26 can send control signals to the main motor 25.

[0032] The operation control device 1 includes a power supply 11, electric operation control buttons 12, a first processor 13, and a second processor 14. The first end of the electric operation control buttons 12 is connected to the power supply 11, and the second end is connected to the input ends of the first processor 13 and the second processor 14. The output ends of the first processor 13 and the second processor 14 are connected to different voting switches 23. Using the processors to diagnose the switching devices reduces the requirements on the switches themselves. Both the first processor 13 and the second processor 14 are safety PLCs (safety programmable systems), meaning they can be programmed according to specific needs to achieve corresponding control functions. This reduces the number of combination switches, facilitating device integration and reducing device size.

[0033] The operation control device 1 is also communicatively connected to the input terminal of the elevator controller 26 to transmit the status of the electric operation control button 12 to the elevator controller 26;

[0034] When the state of the electric operation control button 12 meets the preset operating conditions, the first processor 13 and the second processor 14 control the corresponding voting switch to the closed state to conduct the elevator control circuit; the elevator controller 26 controls the main motor 25 according to the state of the electric operation control button 12 to drive the elevator to run.

[0035] The operation control device of this utility model can be an emergency operation control device or a maintenance device. In this operation control device, the electric operation control button is connected to the first processor and the second processor, which reduces the wiring length. The processor is used to diagnose the switching devices, which can reduce the number of switching devices, lower the requirements on the switches themselves, and also integrate the device, reduce the product size and reduce the cost. The reduced wiring length can also reduce the voltage intensity of the device power supply, and improve the safety when using the operation control device.

[0036] In an optional embodiment, such as Figure 1As shown, the operation control button 12 includes a toggle switch, an up button, a down button, and a run button. The preset operating conditions are that one of the up button and the down button, as well as the toggle switch and the electric run switch, are all in the closed state. When the toggle switch is closed, if the up button and the run button are pressed simultaneously, both toggle switches are closed, the elevator safety control circuit is activated, the main motor 25 is started, and the elevator controller 26 receives an up signal from the electric run control button 12. The elevator controller 26 then sends an up control command to the main motor 25, which drives the elevator upwards. Similarly, if the down button and the run button are pressed simultaneously, both toggle switches are closed, the elevator safety control circuit is activated, the main motor 25 is started, and the elevator controller 26 receives a down signal from the electric run control button 12. The elevator controller 26 then sends a down control command to the main motor 25, which drives the elevator downwards. When the elevator controller 26 detects that the toggle switch is open, it stops the main motor 25, thus exiting the operation. As can be seen, the device in this solution has fewer switches / buttons, is simple to operate, and helps to improve the accuracy of user operation and enhance the safety of elevator operation.

[0037] It should be noted that in this embodiment, the operation control device 1 and the elevator controller 26 transmit the status signals of the operation control buttons 12 through a communication device. Specifically, these can be the status signals of the switch, the up button, and the down button.

[0038] In an optional embodiment, such as Figure 2 The schematic diagram of another operation control device shown shows that the second ends of the switch, the up button, and the down button are also connected to the input end of the elevator controller 26, so the elevator controller 26 can obtain the status signals of the switch, the up button, and the down button in real time, which improves the response speed of the elevator controller 26 and eliminates the need to add a communication device between the operation control device 1 and the elevator controller 26.

[0039] In an optional embodiment, the switch is a signal-type self-locking switch, which is a signal-controlled switch. Compared to traditional power-type self-locking switches, signal-type self-locking switches require less control current / voltage. Specifically, signal-type self-locking switches include toggle-type self-locking switches, slide-type self-locking switches, and push-button type self-locking switches. In existing operation control devices, the switch is usually a rotary switch. Taking a slide-type self-locking switch as an example, the advantages of changing a rotary switch to a slide-type self-locking switch include the following aspects:

[0040] 1. Easy to operate: The sliding self-locking switch can control the operation of the control device with just a push. The operation is simple and intuitive, and users can quickly switch functions. In contrast, the knob switch requires manual operation, which is relatively complicated and easy to slide or rotate.

[0041] 2. Good grip: Sliding self-locking switches are usually rectangular, which provides a better grip and makes it less likely to have difficulty rotating or sliding.

[0042] 3. Long service life: The sliding self-locking switch has a simpler design, resulting in a longer service life.

[0043] 4. Small space occupation: Sliding self-locking switches are typically small in size and lightweight, making them easy to install and use. This allows for a more compact design of the operating control device, saving space.

[0044] In one optional embodiment, the up button, down button, and run button are all signal-type latchless switches, such as tactile switches and membrane switches. Tactile switches have advantages such as low contact resistance and precise operating force error, while membrane switches have advantages such as small size, lightweight, and durability.

[0045] In an optional embodiment, such as Figure 3 The diagram shows another type of operation control device. The switching device includes a first switching switch and a second switching switch. The first switching switch is connected to the input terminal of the first processor 13, and the second switching switch is connected to the input terminal of the second processor 14. By providing two switching switches, each corresponding to one processor, the requirements for the switching switches can be further reduced, thus lowering their cost.

[0046] In one optional embodiment, the power supply voltage range of the device is 3V-24V. This voltage range falls within the low-voltage range, completely preventing users from being harmed by high voltage when using the operating control device, thus improving operational safety.

[0047] In an optional embodiment, Figure 4 This is a schematic diagram of the structure of an emergency electric operation control device provided by this utility model, as shown below. Figure 4 As shown, when the operation control device is an emergency electric operation control device, the input terminals of the first processor 13 and the second processor 14 are also connected to the bypass switch 3. When the first processor 13 and the second processor 14 enter the emergency electric operation control state, the bypass switch 3 is bypassed to avoid the signal of the bypass switch 3 affecting the emergency electric operation control. Specifically, the bypass switch 3 includes at least one of the following: limit switch, safety gear safety switch, slack rope safety switch, safety gear safety switch, buffer safety switch, and speed limiter safety switch.

[0048] In an optional embodiment, when the operation control device is an emergency electric operation control device, the first processor and the second processor exit the emergency electric operation control state upon receiving the maintenance status signal, that is, they prioritize the execution of maintenance instructions.

[0049] The operation control device of this utility model can be an emergency operation control device or a maintenance device. In order to clearly understand the difference between the operation control devices of this utility model and the prior art, and to demonstrate the beneficial effects of the operation control device of this solution, the following will compare and explain with the emergency operation control devices and maintenance devices in the prior art.

[0050] Figure 5 This is a schematic diagram of the structure of an emergency electric operation control device in the prior art, such as... Figure 5 As shown, emergency electric transfer switch 1 and emergency electric transfer switch 2 are both part of a rotary switch; when one is closed, the other is open. During emergency electric operation control, turning the rotary switch closes emergency electric transfer switch 1 and opens emergency electric transfer switch 2. Simultaneously pressing the emergency electric operation switch and the emergency electric up / down switch activates the safety circuit. Furthermore, the existing emergency electric operation control device also includes an emergency electric transfer switch 3. Emergency electric transfer switch 3, emergency electric operation switch, emergency electric up switch, and emergency electric down switch are all connected to the input terminals of the elevator control board. The elevator control board then performs logical judgments between up and down movements and drives the main motor to operate the elevator.

[0051] To exit emergency electric operation control, return the rotary switch to its original position to disconnect emergency electric switch 1 and emergency electric switch 2, thereby disconnecting the safety circuit.

[0052] During emergency electric operation control, if emergency electric switching switch 1 is closed and emergency electric switching switch 2 is closed, and maintenance needs to be initiated, then maintenance switch 1 is opened and maintenance switch 2 is closed to cut off emergency electric operation control.

[0053] Figure 6 This is a schematic diagram of the structure of a maintenance device in the prior art, such as... Figure 6 As shown, maintenance switch 1 and maintenance switch 2 are both part of a rotary switch; when one is closed, the other is open. During maintenance control, turning the rotary switch opens maintenance switch 1 and closes maintenance switch 2. Simultaneously pressing the maintenance run switch and either the maintenance up switch or the maintenance down switch activates the safety circuit. Maintenance switch 2, maintenance run switch, maintenance up switch, and maintenance down switch are also connected to the input terminals of the elevator control board. The elevator control board then performs logical judgments between up and down movements and drives the main motor to operate the elevator.

[0054] In existing emergency electric operation control devices and maintenance devices, the elevator control panel also includes operation buttons. It is evident that these existing devices have numerous switches and buttons, making operation complex and resulting in a larger device size. The wiring is also longer and requires higher voltage, typically exceeding the safe voltage of 36V, necessitating higher protection requirements for users and increasing product costs. In contrast, the operation control device of this invention has fewer switches and buttons, making operation simpler and resulting in a smaller device size. The wiring is also shorter, requiring lower voltage, reducing protection requirements for users and lowering product costs.

[0055] In an optional embodiment, the present invention also provides a safety control system, the structural schematic of which can be referred to. Figure 1 The safety control system includes the operation control device and elevator control circuit provided by this utility model. The elevator control circuit includes a main power supply, a power supply line, multiple voting switches installed on the power supply line, a safety execution subsystem, and a main motor connected in sequence. This safety control system has the same components and beneficial effects as the operation control device of this utility model.

[0056] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0057] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An operation control device, characterized in that, The operation control device is connected to the elevator control circuit, which includes a main power supply, a power supply line, multiple voting switches installed on the power supply line, a safety execution subsystem, a main motor, and an elevator controller connected in sequence. The operation control device includes a device power supply, an electric operation control button, a first processor, and a second processor. The first end of the electric operation control button is connected to the device power supply, and the second end of the electric operation control button is connected to the input ends of the first processor and the second processor. The output ends of the first processor and the second processor are connected to different voting switches. The operation control device is also connected to the input terminal of the elevator controller to transmit the status of the electric operation control buttons to the elevator controller; When the state of the electric operation control button meets the preset operating conditions, the first processor and the second processor control the corresponding voting switch to the closed state to conduct the elevator control circuit; the elevator controller controls the main motor according to the state of the electric operation control button to drive the elevator to run.

2. The operation control device as described in claim 1, characterized in that, The electric operation control buttons include a switch, an up button, a down button, and a run button. The preset operating condition is that one of the up button and the down button, as well as the switch and the run button, are all in the closed state.

3. The operation control device as described in claim 2, characterized in that, The switching switch is a signal-type self-locking switch.

4. The operation control device as described in claim 2, characterized in that, The up button, the down button, and the run button are all signal-type unlocked switches.

5. The operation control device as described in claim 2, characterized in that, The second ends of the switch, the up button, and the down button are also connected to the input end of the elevator controller.

6. The operation control device as described in claim 2, characterized in that, The switching device includes a first switching device and a second switching device. The first switching device is connected to the input terminal of the first processor, and the second switching device is connected to the input terminal of the second processor.

7. The operation control device according to any one of claims 1-6, characterized in that, The power supply voltage range of the device is 3V-24V.

8. The operation control device according to any one of claims 1-6, characterized in that, When the operation control device is an emergency electric operation control device, the input terminals of the first processor and the second processor are also connected to a bypass switch. When the first processor and the second processor enter the emergency electric operation control state, the bypass switch is bypassed. The bypass switch includes at least one of the following: limit switch, slack rope safety switch, safety clamp safety switch, buffer safety switch, and speed limiter safety switch.

9. The operation control device according to any one of claims 1-6, characterized in that, When the operation control device is an emergency electric operation control device, the first processor and the second processor exit the emergency electric operation control state upon receiving a maintenance status signal.

10. A safety control system, characterized in that, The system includes the operation control device and elevator control circuit as described in any one of claims 1-9, wherein the elevator control circuit includes a main power supply, a power supply line, a plurality of voting switches disposed on the power supply line, a safety execution subsystem, and a main motor connected in sequence.

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