Control method of lifting device

Abstract

The invention discloses a control method of a lifting device. The lifting device comprises multiple layers of lifting devices and multiple layers of lifting modules. The control method comprises the steps that the multiple layers of lifting modules are connected with the multiple layers of lifting devices respectively, each layer of lifting module independently controls each layer of lifting device to ascend and descend, the lifting state of each layer of lifting device is determined by the position states of the lifting devices of other layers, or the lifting states of the lifting devices of all layers are the same. The multiple layers of lifting modules are connected with the multiple layers of lifting devices, each layer of lifting module can independently control each layer of lifting device, the lifting state of each layer of lifting device can be linked with the position states of the lifting devices of other layers, control is easy, and use is flexible.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting control, and in particular to a control method for a lifting device. Background Art

[0002] Existing multi-layer devices generally use a single motor to achieve synchronous lifting, which improves lifting efficiency but has low flexibility. When only one layer of the device needs to be raised or lowered, the devices on other layers will also rise or fall synchronously, sometimes even interfering with normal use, especially in scenarios where the lifting order of each layer needs to be independently controlled, which has certain limitations. Summary of the invention

[0003] The object of the present invention is to provide a control method for a lifting device, which can flexibly control the lifting device on each floor.

[0004] To achieve the above-mentioned purpose, the solution of the present invention is: a control method for a lifting device, the lifting device includes a multi-layer lifting device and a multi-layer lifting module; the control method includes: the multi-layer lifting modules are respectively connected to the multi-layer lifting devices, each lifting module independently controls the lifting of each layer of the lifting device, the lifting state of each layer of the lifting device is determined by the position state of other layers of the lifting devices, or the lifting state of each layer of the lifting device is the same.

[0005] In a preferred solution, there are two layers of lifting devices, namely a first layer of lifting devices and a second layer of lifting devices, and the first layer of lifting devices is located below the second layer of lifting devices.

[0006] In a preferred embodiment, when the lifting device on the first floor is ascending, the lifting device on the second floor is at the lowest position, and when the lifting device on the first floor is descending, the lifting device on the second floor is at the lowest position.

[0007] In a preferred embodiment, when the lifting device on the second floor is ascending, the lifting device on the first floor is at the highest position, and when the lifting device on the second floor is descending, the lifting device on the first floor is at the highest position.

[0008] The preferred solution also includes a main control system, a slave control system and several peripheral devices. The main control system and the slave control system are arranged on the lifting device. Each lifting device on each floor is provided with several peripheral devices. The main control system is provided with a main controller, and the main controller is respectively connected to the lifting module and the several peripheral devices for controlling the lifting module and the several peripheral devices. A communication connection is established between the main control system and the slave control system.

[0009] In a preferred embodiment, the lifting module is an electric push rod, on which a speed measuring module is provided. The speed measuring module is connected to a main controller and is used to transmit lifting speed information of the lifting device to the main controller.

[0010] In a preferred embodiment, the slave control system includes a power module, a slave controller and a Bluetooth module. The power module and the Bluetooth module are respectively connected to the slave controller. A communication connection is established between the Bluetooth module and the master controller. The power module includes: The power management module is used to switch between the battery power supply mode of the power module and the external power supply mode when the power module is connected to an external charger, and to control the opening and closing of the external power supply mode; The battery charge and discharge management module is used to control the charge and discharge of the battery of the power module; The power display module is used to display the battery information, power supply mode information and status information of the peripheral devices of the power module.

[0011] In a preferred embodiment, the plurality of peripheral devices include a USB interface, a speaker, an LED light strip, a secondary light and an anti-pinch module.

[0012] The preferred solution further comprises a remote control module, which is connected to the master control system and the slave control system respectively and is used for remotely controlling a number of peripheral devices.

[0013] Preferably, the remote control module includes a wireless remote control, a mini-program and an APP.

[0014] After adopting the above scheme, the beneficial effect of the present invention is that the multi-layer lifting modules of the present invention are respectively connected to the multi-layer lifting devices, and each layer of the lifting module can independently control the lifting device of each layer, and the lifting state of each layer of the lifting device can be linked with the position state of other layers of the lifting devices, which is simple to control and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of a master control system and a slave control system connected in a single-line communication mode in an embodiment of the present invention; Figure 2 is a schematic block diagram of the peripheral equipment of the two-layer lifting device controlled by the main controller in an embodiment of the present invention; Figure 3 is a schematic block diagram of a slave control system in an embodiment of the present invention; Figure 4 This is a flow chart of the anti-pinch module in the embodiment of the present invention when software detection is adopted; Figure 5 is a flow chart of controlling the rise of a two-layer lifting device by using a remote control module in an embodiment of the present invention; Figure 6 It is a flow chart of controlling the descent of a two-layer lifting device by using a remote control module in an embodiment of the present invention.

[0016] Description of labels: 1. First-floor lifting device; 2. Second-floor lifting device; 3. Main control system; 31. Main controller; 4. Slave control system; 40. Power module; 400. Power management module; 401. Battery charge and discharge management module; 402. Power display module; 41. Slave controller; 42. Bluetooth module; 43. Buzzer; 5. Peripheral equipment; 6. Remote control module. DETAILED DESCRIPTION

[0017] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0018] This embodiment provides a control method for a lifting device, wherein the lifting device includes a multi-layer lifting device and a multi-layer lifting module; The control method comprises: The multi-layer lifting modules are respectively connected to the multi-layer lifting devices. Each layer of the lifting module independently controls the lifting of each layer of the lifting device. The lifting state of each layer of the lifting device is determined by the position state of other layers of the lifting devices, or the lifting state of each layer of the lifting device is the same.

[0019] In this embodiment, since the multi-layer control modules are respectively connected to the multi-layer lifting devices, the lifting devices on each layer can be accurately operated and adjusted, and independent movement between the multi-layer lifting devices is achieved, thereby improving the flexibility of control.

[0020] Specifically, the lifting module can be used to control the multi-layer lifting devices, so that the prerequisite for the lifting devices on any layer to rise or fall is that the lifting devices on other layers are already in the lowest or highest position, so as to meet the user's usage needs.

[0021] The lifting device provided in this embodiment can be used in scenarios for vertical movement or vertical transportation such as multi-layer lifting tents, warehouses or logistics. Figure 2 As shown, there are two layers of lifting devices, namely, a first layer lifting device 1 and a second layer lifting device 2, and the first layer lifting device 1 is located below the second layer lifting device 2. Both the first layer lifting device 1 and the second layer lifting device 2 can adopt lifting platforms, and a tent is arranged between two adjacent lifting platforms, which is convenient to use.

[0022] Furthermore, when the first-layer lifting device 1 rises, the second-layer lifting device 2 is at the lowest position, and when the first-layer lifting device 1 descends, the second-layer lifting device 2 is at the lowest position.

[0023] Specifically, when the first-layer lifting module needs to execute the rising instruction of the first-layer lifting device 1, it is first necessary to determine whether the second-layer lifting device 2 has dropped to the lowest position. If the second-layer lifting device 2 has dropped to the lowest position at this time, the first-layer lifting module executes the rising instruction of the first-layer lifting device 1, thereby driving the first-layer lifting device 1 to rise. If the second-layer lifting device 2 has not dropped to the lowest position at this time, the second-layer lifting module needs to first execute the descending instruction of the second-layer lifting device 2, and then the first-layer lifting module executes the rising instruction of the first-layer lifting device 1, thereby driving the first-layer lifting device 1 to rise. In other embodiments, the state relationship between the rising of the first-layer lifting device 1 and the second-layer lifting device 2 can also be adjusted to meet actual needs.

[0024] Similarly, when the first-floor lifting module needs to execute the descending instruction of the first-floor lifting device 1, it is first necessary to determine whether the second-floor lifting device 2 has descended to the lowest position. If the second-floor lifting device 2 has descended to the lowest position at this time, the first-floor lifting module executes the descending instruction of the first-floor lifting device 1, thereby driving the first-floor lifting device 1 to descend. If the second-floor lifting device 2 has not descended to the lowest position at this time, the second-floor lifting module needs to first execute the descending instruction of the second-floor lifting device 2, and then the first-floor lifting module executes the descending instruction of the first-floor lifting device 1, thereby driving the first-floor lifting device 1 to descend. In other embodiments, the state relationship between the descent of the first-floor lifting device 1 and the second-floor lifting device 2 can also be adjusted to meet actual needs.

[0025] Furthermore, when the second-layer lifting device 2 rises, the first-layer lifting device 1 is at the highest position, and when the second-layer lifting device 2 descends, the first-layer lifting device 1 is at the highest position.

[0026] Specifically, when the second-floor lifting module needs to execute the rising instruction of the second-floor lifting device 2, it first needs to determine whether the first-floor lifting device 1 has risen to the highest position. If the first-floor lifting device 1 has risen to the highest position at this time, the second-floor lifting module executes the rising instruction of the second-floor lifting device 2, thereby driving the second-floor lifting device 2 to rise. If the first-floor lifting device 1 has not risen to the highest position at this time, the first-floor lifting module needs to first execute the rising instruction of the first-floor lifting device 1, and then the second-floor lifting module executes the rising instruction of the second-floor lifting device 2, thereby driving the second-floor lifting device 2 to rise. In other embodiments, the state relationship between the rising of the second-floor lifting device 2 and the first-floor lifting device 1 can also be adjusted to meet actual needs.

[0027] Similarly, when the second-floor lifting module needs to execute the descending instruction of the second-floor lifting device 2, it first needs to determine whether the first-floor lifting device 1 has risen to the highest position. If the first-floor lifting device 1 has risen to the highest position at this time, the second-floor lifting module executes the descending instruction of the second-floor lifting device 2, thereby driving the second-floor lifting device 2 to descend. If the first-floor lifting device 1 has not risen to the highest position at this time, the first-floor lifting module needs to first execute the ascending instruction of the first-floor lifting device 1, and then the second-floor lifting module executes the descending instruction of the second-floor lifting device 2, thereby driving the second-floor lifting device 2 to descend. In other embodiments, the state relationship between the descent of the second-floor lifting device 2 and the first-floor lifting device 1 can also be adjusted to meet actual needs.

[0028] Further, if Figures 1 to 3 As shown, it also includes a main control system 3, a slave control system 4 and several peripheral devices 5. The main control system 3 and the slave control system 4 are arranged on the lifting device, and each layer of the lifting device is provided with several peripheral devices 5. The main control system 3 is provided with a main controller 31, and the main controller 31 is respectively connected to the lifting module and the several peripheral devices 5, and is used to control the lifting module and the several peripheral devices 5. A communication connection is established between the main control system 3 and the slave control system 4. The main control system 3 and the slave control system 4 of this embodiment can flexibly adjust the working state of the lifting device and the peripheral devices 5 as needed to adapt to different application scenarios and needs.

[0029] Furthermore, the lifting module in this embodiment is an electric push rod, but is not limited thereto. The electric push rod is provided with a speed measuring module, which is connected to the main controller 31 and is used to transmit the lifting speed information of the lifting device to the main controller 31.

[0030] Specifically, in this embodiment, two electric push rods are arranged on each layer of the lifting device, but it is not limited thereto, so that the lifting process of the lifting device is smoother. At the same time, the speed measuring module can monitor the lifting speed of the electric push rod in real time to ensure that the lifting device works at a predetermined speed. By monitoring the lifting speed, the main controller 31 can promptly detect abnormal conditions, such as overspeed or unstable speed, so as to take corresponding protective measures to avoid safety accidents, which helps to improve the safety performance of the entire lifting device. The main controller 31 can optimize the control strategy of the electric push rod based on the data provided by the speed measuring module. For example, when it is detected that the lifting speed is slow, the output power of the motor can be adjusted to increase the speed; when the speed is too fast, the output power can be reduced to avoid impact and wear.

[0031] Furthermore, the slave control system 4 includes a power module 40, a slave controller 41 and a Bluetooth module 42. The power module 40 and the Bluetooth module 42 are respectively connected to the slave controller 41. A communication connection is established between the Bluetooth module 42 and the main controller 31. The power module 40 includes: a power management module 400, which is used to switch the battery power supply mode of the power module 40 and the external power supply mode when the power module 40 is connected to an external charger, and to control the opening and closing of the external power supply mode; a battery charge and discharge management module 401, which is used to control the charge and discharge of the battery of the power module 40; a power display module 402, which is used to display the battery information, power supply mode information and status information of the peripheral device 5 of the power module 40.

[0032] For various peripheral devices 5 on the lifting device, this embodiment adopts the battery power supply mode of the power module 40 of the slave control system 4 or the external power supply mode of the power module 40 for power supply, which is flexible to use. Specifically, when the external charger is connected to the power management module 400 of the power module 40, the slave controller 41 detects the external power input. At this time, the slave controller 41 can select the battery power supply mode or the external power supply mode according to the battery status of the power module 40, and transmit the electric energy to the main controller 31, so that the main controller 31 distributes the electric energy to various peripheral devices 5. In addition, a switch button is provided on the power module 40, and the switch button is electrically connected to the slave controller 41 for turning on or off the power supply.

[0033] Furthermore, the present embodiment also provides a buzzer 43, which is electrically connected to the slave controller 41. When the power module 40 is abnormal, the slave controller 41 controls the buzzer 43 to perform an alarm process in combination with the current state of the buzzer 43 and the control information received from the main controller 31. The battery power, charge and discharge indication, current power supply mode, and status information of each peripheral device 5 are all displayed on the power display module 402, which is convenient to use.

[0034] Further, if Figure 2 As shown, the peripheral devices 5 of this embodiment include a USB interface, a speaker, an LED light strip, a secondary light and an anti-pinch module, but are not limited thereto. Users can select and set the peripheral devices according to actual needs.

[0035] Since the first-layer lifting device 1 needs to be set on an external device such as the rear bucket of a car, the first-layer lifting device 1 of this embodiment does not have a USB interface, but it is not limited to this. USB interfaces can be set on other lifting devices except the first-layer lifting device 1. This embodiment takes a two-layer lifting device as an example. The first-layer lifting device 1 does not have a USB interface, and the second-layer lifting device 2 is provided with a USB interface. The main controller 31 controls whether to supply power to the USB interface according to the position state of each layer of the lifting device. Specifically, when the second-layer lifting device 2 rises to the highest point, the main controller 31 supplies power to the USB interface, and when the second-layer lifting device 2 falls to the lowest point, the main controller 31 stops supplying power to the USB interface. At the same time, when the main controller 31 detects that the current of the USB interface is less than the threshold within a certain period of time, it will send a control signal to the slave controller 41, and the slave controller 41 controls the power supply of the USB interface according to the current state of the USB interface and other states (such as the lifting state of the lifting device, the on and off state of the LED light strip or the auxiliary light, etc.).

[0036] The auxiliary lamp of this embodiment is detachably mounted on the lifting device, and is electrically connected to the main controller 31. The main controller 31 cooperates with the slave controller 41 to power the auxiliary lamp and control the switch state of the auxiliary lamp. At the same time, taking a two-layer lifting device as an example, the auxiliary lamp can also be automatically turned on or off according to the lifting state of the two-layer lifting device through the main controller 31 and the slave controller 41, such as when the lifting device rises to the highest position, the auxiliary lamp automatically turns on. Of course, the number of auxiliary lamps can be adjusted, and the auxiliary lamp can be used on each layer of the lifting device.

[0037] In this embodiment, an LED light strip is provided on each lifting device, and the on and off state of the LED light strip is controlled by the main controller 31 in cooperation with the slave controller 41. Specifically, when each lifting device on each layer rises to the highest point, the LED light strip automatically lights up. For the upper lifting device, a channel entrance can also be provided on the lifting device, and a flap for covering the channel entrance can be provided at the channel entrance, so that after the flap is opened, the lower lifting device can enter the upper lifting device through the channel entrance. In addition, a ladder can also be provided on the lower lifting device for users to enter the upper space from the lower space through the channel entrance. In this embodiment, the USB interface and the LED light strip can be controlled in linkage with the flap through the main controller 31. That is, when the upper lifting device rises to the highest point and the flap is opened, the USB interface is powered or the LED light strip automatically lights up. The LED light strip in this embodiment has three levels of brightness, but is not limited thereto. Specifically, the LED light strip can be turned on and off or the brightness level can be adjusted by pressing the position status of the lifting device, the battery power of the power module 40, the anti-pinch detection of the remote control module 6 or the anti-pinch module, and the light control of the auxiliary light is the same as that of the LED light strip, which will not be explained in detail. In addition, the auxiliary light can also be controlled by the built-in control switch. Of course, the auxiliary light or LED light strip can also be selected and installed according to actual needs.

[0038] In addition, the use status of the LED light strip and the auxiliary light can also be linked to the power module 40. Specifically, when the main controller 31 detects that the entire lifting device has not been lifted for a certain period of time, the USB interface is used for charging, or the LED light strip and the auxiliary light are off, it will send a signal to the slave controller 41 to turn off the power supply to the entire lifting device. The detection time threshold set in this embodiment is ten minutes, but not limited to this, which can avoid waste of power and improve power utilization.

[0039] In this embodiment, an anti-pinch module is set on the lifting device on each floor. Specifically, when the anti-pinch module is triggered, the anti-pinch signal will be transmitted to the main controller 31. The main controller 31 will stop the descending action of the corresponding lifting device and raise the lifting device for a certain distance, thereby playing an anti-pinch role and effectively ensuring the safety of users.

[0040] As for the anti-pinch detection of the anti-pinch module, physical detection or software detection can be used. When physical detection is used, the anti-pinch module can use anti-pinch rubber strips, but is not limited to this. The anti-pinch rubber strips are set on the frame used to fix the bottom lifting device, or on the top of the lifting device. When the anti-pinch rubber strips are detected to move during the descent of the lifting device, the first-layer lifting device 1 or the second-layer lifting device 2 stops descending and rises a certain distance. When software detection is used, such as Figure 4As shown, taking a two-layer lifting device as an example, since the electric push rod that controls the descent of the lifting device gradually decreases the current during the descent process. Therefore, when the second-layer lifting device 2 descends, if the current is not a null value, the current current value is read. If the current current value is greater than the sum of the current judgment value and the safety value at the previous moment, the lifting device stops descending and rises a certain distance. On the contrary, if the current current value is less than the sum of the current judgment value and the safety value at the previous moment, the current current value is used as the current judgment value at the next moment.

[0041] In addition, the main controller 31 of this embodiment can also detect the opening and closing state of the flap of the upper lifting device and the locking and unlocking state of the ladder between the lifting devices. When the main controller 31 detects that the flap of the upper lifting device is open, or when the main controller 31 detects that the ladder between the lifting devices is in a locked state, the main controller 31 controls the lifting device to maintain the current position height, and can also control the lifting device to rise and prohibit the lifting device from descending, which is conducive to ensuring the safety of use.

[0042] In this embodiment, a speaker is arranged on each lifting device, and the main controller 31 can control the speaker to play music or make various sounds such as voice broadcast.

[0043] The present embodiment also includes a remote control module 6, which is connected to the main control system 3 and the slave control system 4 respectively, and is used to remotely control several peripheral devices 5. The remote control module 6 of the present embodiment includes a wireless remote control, a mini program and an APP. The wireless remote control establishes a connection with the main control. For the wireless remote control, the main controller 31 will control the lifting and lowering of the lifting device, the volume of the music played by the speaker, the switching of tracks, the opening and closing of the speaker sound, the control of the on and off status of the auxiliary light and the LED light strip, or the active disconnection with other peripheral mobile devices, etc. The mini program and the APP establish a connection with the Bluetooth module 42. For the mini program or APP, a communication connection can be established with the slave controller 41 through the Bluetooth module 42. Its control function for the peripheral device 5 is consistent with that of the wireless remote control, which will not be described in detail. In addition, when the speaker is playing music, the mini program or APP can cooperate with the Bluetooth module 42 to choose whether to play the audio information of the SD card, which is flexible to use.

[0044] It needs to be further explained that, for the auxiliary lights on the lifting device, taking a two-layer lifting device as an example, when the lifting device rises to the highest position, the auxiliary lights in the lifting device are automatically turned on, and for the auxiliary lights of the second-layer lifting device 2, the auxiliary lights will only light up when the flap is opened; when the lifting device is not in the lowest position, the lighting state of the auxiliary lights can be cyclically adjusted through the remote control module 6, and the lighting states of the auxiliary lights include floodlight level 1, floodlight level 2, spotlight and off state; when the lifting device descends to the lowest position, the auxiliary lights are automatically turned off.

[0045] In this embodiment, when the remote control module 6 is used to control the lifting of the lifting device, only one lifting button and one lowering button need to be provided, and the main controller 31 automatically controls the lifting device.

[0046] Take a two-layer lifting device as an example. Figure 5 As shown, after pressing the ascending button, if the first-layer lifting device 1 has risen to the highest position at this time, the main controller 31 executes the ascending instruction of the second-layer lifting device 2, thereby driving the second-layer lifting device 2 to rise through the second-layer lifting module. If the first-layer lifting device 1 is not at the highest position and the second-layer lifting device 2 has dropped to the lowest position at this time, the main controller 31 executes the ascending instruction of the first-layer lifting device 1, thereby driving the first-layer lifting device 1 to rise through the first-layer lifting module. If the first-layer lifting device 1 is not at the highest position and the second-layer lifting device 2 is not at the lowest position at this time, the main controller 31 needs to first execute the descending instruction of the second-layer lifting device 2, and then execute the ascending instruction of the first-layer lifting device 1, thereby driving the first-layer lifting device 1 to rise.

[0047] Take a two-layer lifting device as an example. Figure 6 As shown, when the descending button is pressed for the first time, if the second-layer lifting device 2 is at the lowest position and the first-layer lifting device 1 is not at the lowest position, the speaker will broadcast a safety reminder, such as checking the flap of the lifting device, whether there is anyone in the ladder or tent, and whether there are people approaching around. When the descending button is pressed for the second time, the main controller 31 executes the descending instruction of the first-layer lifting device 1, thereby driving the first-layer lifting device 1 to descend to a position 20 cm away from the lowest position through the first-layer lifting module, and the speaker will broadcast a safety reminder again. When the descending button is pressed for the third time, the first-layer lifting module drives the first-layer lifting device 1 to descend to the lowest position.

[0048] Take a two-layer lifting device as an example. Figure 6 As shown, when the descending button is pressed for the first time, if the second-layer lifting device 2 is not in the lowest position at this time, the speaker will broadcast a safety reminder, such as checking the flap of the lifting device, whether there is anyone in the ladder or tent, and whether there are people approaching around. When the descending button is pressed for the second time, if the first-layer lifting device 1 is in the highest position, the main controller 31 executes the descending instruction of the second-layer lifting device 2, so that the second-layer lifting module drives the second-layer lifting device 2 to descend to the lowest position. If the first-layer lifting device 1 is not in the highest position, the main controller 31 first executes the ascending instruction of the first-layer lifting device 1, and after the first-layer lifting module drives the first-layer lifting device 1 to rise to the highest position, the main controller 31 executes the descending instruction of the second-layer lifting device 2, so that the second-layer lifting device 2 drives the second-layer lifting module to descend to the lowest position.

[0049] The main control system 3 and the slave control system 4 of this embodiment adopt a single-host and single-slave control method, which can effectively reduce the wiring troubles and is more flexible in use through modularization. For the power supply module 40 of the slave control system 4, it can be taken out separately and placed indoors for charging, which is flexible to use. Users can also equip multiple modules according to their needs to solve the problem of battery life anxiety. At the same time, multiple single-host and multi-slave control interfaces are reserved on the main controller 31 of this embodiment. Users can adjust the peripheral device 5 according to their needs, so as to perform iterative updates without changing the overall architecture, and the design is user-friendly.

[0050] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.

Claims

1. A control method for a lifting device, characterized in that: The lifting device includes a multi-layer lifting device and a multi-layer lifting module; The control method comprises: The multi-layer lifting modules are respectively connected to the multi-layer lifting devices. Each layer of the lifting module independently controls the lifting of each layer of the lifting device. The lifting state of each layer of the lifting device is determined by the position state of other layers of the lifting devices, or the lifting state of each layer of the lifting device is the same.

2. A method for controlling a lifting device according to claim 1, characterized in that: The number of the lifting devices is two, namely a first-layer lifting device and a second-layer lifting device, and the first-layer lifting device is located below the second-layer lifting device.

3. A method for controlling a lifting device according to claim 2, characterized in that: When the first-layer lifting device is raised, the second-layer lifting device is at the lowest position, and when the first-layer lifting device is lowered, the second-layer lifting device is at the lowest position.

4. A method for controlling a lifting device according to claim 2, characterized in that: When the second-layer lifting device is rising, the first-layer lifting device is at the highest position, and when the second-layer lifting device is descending, the first-layer lifting device is at the highest position.

5. A method for controlling a lifting device according to claim 2, characterized in that: It also includes a main control system, a slave control system and several peripheral devices. The main control system and the slave control system are arranged on the lifting device. Each lifting device on each floor is provided with several peripheral devices. The main control system is provided with a main controller. The main controller is respectively connected to the lifting module and the several peripheral devices for controlling the lifting module and the several peripheral devices. A communication connection is established between the main control system and the slave control system.

6. A method for controlling a lifting device according to claim 5, characterized in that: The lifting module is an electric push rod, on which a speed measuring module is provided. The speed measuring module is connected to the main control system controller and is used to transmit the lifting speed information of the lifting device to the control system main controller.

7. A method for controlling a lifting device according to claim 5, characterized in that: The slave control system includes a power module, a slave controller and a Bluetooth module. The power module and the Bluetooth module are respectively connected to the slave controller. A communication connection is established between the Bluetooth module and the master controller. The power module includes: The power management module is used to switch between the battery power supply mode of the power module and the external power supply mode when the power module is connected to an external charger, and to control the opening and closing of the external power supply mode; The battery charge and discharge management module is used to control the charge and discharge of the battery of the power module; The power display module is used to display the battery information, power supply mode information and status information of the peripheral devices of the power module.

8. A method for controlling a lifting device according to claim 5, characterized in that: The peripheral devices include a USB interface, a speaker, an LED light strip, a secondary light and an anti-pinch module.

9. A method for controlling a lifting device according to claim 5, characterized in that: It also includes a remote control module, which is connected to the main control system and the slave control system respectively and is used for remotely controlling a number of peripheral devices.

10. A method for controlling a lifting device according to claim 9, characterized in that: The remote control module includes a wireless remote control, a mini-program and an APP.

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