Intelligent safe remote permanent magnet frequency conversion wireless controllable electric hoist device

Abstract

The utility model discloses an intelligent safe remote permanent magnet frequency conversion wireless controllable electric hoist device which comprises a control part and a driving part, the control part and the driving part are both connected with a motor, the control part carries out wireless control and data and signal transmission on the motor, and the driving part outputs a driving signal to the motor; the control part comprises a single chip microcomputer master control, and a level conversion circuit, an abnormal reset circuit, a low-power-consumption control circuit, a rotating speed mode selection circuit, a coding switch circuit, a Hall pressing stroke detection circuit, an IIC control circuit, a power supply circuit and a three-path low-voltage control signal input circuit which are respectively connected with the single chip microcomputer master control; two relay output circuits and a wireless interface module circuit. According to the electric hoist device, the Hall sensor is used in the magnetic encoder, rotating speed and position signals are output by detecting a rotating magnetic field, starting, stopping and rotating speed adjusting of the electric hoist are remotely and wirelessly controlled in real time, and the automation degree, operation safety and working efficiency of material carrying are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crane mechanical technical field especially relates to a kind of intelligent safety remote permanent-magnetic variable-frequency wireless controllable electric hoist device. BACKGROUND

[0002] Traditional electric hoist is widely used in lifting and carrying operations of goods in factories, warehouses and other places as common hoisting equipment. In complex working environment, the operation of traditional electric hoist often needs manual intervention, and usually needs on-site operation of operators, which not only limits the flexibility of operation, but also increases the safety risk and labor intensity of operators. With the rapid development of Internet of Things and wireless communication technology, remote control technology has been widely applied in various industries. Applying remote control technology to hoisting and carrying field can realize remote control of start and stop and speed of electric hoist, and can improve the safety, convenience and efficiency of operation. SUMMARY

[0003] To solve the above problems, the present application provides an intelligent safety remote permanent-magnetic variable-frequency wireless controllable electric hoist device. Through optimization and adjustment of hardware circuit, the lifting efficiency is improved and the energy consumption is reduced. The system combines with wireless terminal device control, adopts Hall sensor, detects rotating magnetic field to output speed and position signal, allows operators to remotely control start and stop and speed of electric hoist, greatly improves the operation safety and flexibility.

[0004] The technical scheme comprises a motor, a transmission mechanism and a lifting mechanism, and further comprises a control part and a driving part. The control part and the driving part are connected with the motor. The control part is wirelessly controlled and data and signal are transmitted. The driving part outputs driving signal to the motor. The control part comprises a single-chip microcomputer master control and a level conversion circuit, an abnormal reset circuit, a low-power control circuit, a speed mode selection circuit, an encoding switch circuit, a Hall pressing stroke detection circuit, an IIC control circuit, a power supply circuit, a three-way low-voltage control signal input circuit, a two-way relay output circuit and a wireless interface module circuit connected with the single-chip microcomputer master control respectively.

[0005] The single-chip microcomputer master control comprises an HC32L130J8TA-LQ48 chip.

[0006] The level conversion circuit is also connected with the driving board to convert the level to match different level requirements.

[0007] A button is arranged in the abnormal reset circuit, and the button is pressed to manually reset.

[0008] The low-power control circuit comprises a P-channel field effect transistor to realize low standby power consumption.

[0009] The speed mode selection circuit realizes forward and reverse switching and manual switching of constant and variable speed control.

[0010] The encoding switch circuit is used for pairing in the wireless mode and setting the rotating speed in the constant speed mode;

[0011] The Hall pressing stroke detection circuit realizes different rotating speeds according to different Hall pressing strokes;

[0012] The IIC control circuit controls the display content of the digital tube;

[0013] The wireless interface module circuit receives and sends data and signals, and the wiring end is provided with a reserved interface, and the wireless adaptation is realized through the single-chip microcomputer main control;

[0014] The power supply circuit independently supplies power to different power supply requirements;

[0015] The three-way low-voltage control signal input circuit provides three-way control signal input to realize self-defined functions;

[0016] The two-way relay output circuit controls two-way relays.

[0017] Preferably, the driving part comprises a main controller and a rectifier circuit, an intermediate circuit, a detection circuit, an isolation power supply and a discharge circuit which are all connected with the main controller, wherein,

[0018] The main controller comprises an N32G031C8L7 chip;

[0019] The rectifier circuit rectifies the power frequency power supply to provide the required DC power supply for the inverter circuit and the control circuit;

[0020] The intermediate circuit is an energy storage device, and the motor obtains energy from the intermediate circuit through the inverter;

[0021] The detection circuit comprises a self-locking protection circuit, an overvoltage detection circuit, an emergency stop detection circuit, a voltage acquisition circuit, a short-circuit protection circuit, a stroke detection circuit, a Hall detection circuit, a temperature detection circuit, a current acquisition circuit and a power failure detection circuit;

[0022] The isolation power supply is used for voltage boosting and voltage reducing;

[0023] The discharge circuit monitors the capacitor voltage in real time, and releases the capacitor voltage when the capacitor voltage is overvoltage.

[0024] Preferably, the encoding switch circuit comprises a rotating encoder EC11E15244G1.

[0025] Preferably, the Hall pressing stroke detection circuit comprises an AH49HSC chip.

[0026] Preferably, the IIC control circuit comprises a TM1650 chip.

[0027] Preferably, the emergency stop detection circuit comprises an EL817C optical coupling chip.

[0028] Preferably, the current collection circuit comprises an HT8632 operational amplifier.

[0029] Preferably, the isolation power supply comprises an SD6834 power management chip.

[0030] Compared with the prior art, the utility model at least has the following beneficial effects:

[0031] 1. Improve the operation convenience: the operator does not need to operate the electric hoist in close range, and only needs to realize its real-time start-stop and real-time speed regulation through the remote terminal equipment (remote control handle), which greatly improves the operation convenience.

[0032] 2. Enhance the safety: the remote control reduces the on-site operation risk of the operator, and the safety protection function built-in the control unit further improves the operation safety of the electric hoist. The overload protection, overvoltage, overcurrent and other safety devices are set, when the unexpected power failure and other conditions occur, the wireless emergency stop function starts, which will immediately stop protection, ensures that the electric hoist can automatically stop running under the conditions of overload, power failure and boundary crossing, and protects the safety of the operator and the equipment.

[0033] 3. Improve the work efficiency: through the remote control of the start-stop and speed of the electric hoist, more accurate and faster hoisting operation can be realized, which improves the work efficiency and productivity.

[0034] 4. High efficiency and energy saving: the direct current brushless motor is adopted as the power source, the motor has the characteristics of high power factor and low energy consumption. The built-in frequency conversion speed regulation device of the motor can automatically adjust the speed and output power according to the actual load condition, realizes the optimal distribution of energy, reduces the energy loss, and can significantly reduce the energy consumption, operation cost and maintenance cost.

[0035] 5. High performance: wide speed regulation range: the brushless direct current motor has a wide speed regulation range, can run at full power at any speed, and meets the needs of the electric hoist in different working scenes.

[0036] 6. High torque: the brushless direct current motor can output large torque at low speed, which makes it perform better in occasions requiring large starting torque.

[0037] 7. Intelligent wireless control:

[0038] Intelligent control unit: the advanced HC32L130J8TA-LQ48 chip microprocessor is adopted as the control core, which realizes the real-time monitoring and accurate control of the running state of the electric hoist.

[0039] Signal transmission: the remote control terminal and the electric hoist control system establish connection through wireless network, realizing bidirectional transmission of data.

[0040] State feedback: supporting wireless communication function, the system has fault prompt function, and can send maintenance reminder. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 The structure block diagram of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model is shown in the figure.

[0042] Figure 2 The single-chip microcomputer main control and level conversion circuit diagram of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model is shown in the figure.

[0043] Figure 3 The abnormal reset circuit, low-power control circuit, rotating speed mode selection circuit and code switch circuit diagram of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model are shown in the figure.

[0044] Figure 4 The IIC control circuit, digital tube driving circuit and wireless interface module circuit diagram of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model are shown in the figure.

[0045] Figure 5 The main control ware, self-locking protection circuit, overvoltage detection circuit and emergency stop detection circuit diagram of the driving part of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model are shown in the figure.

[0046] Figure 6 The intermediate circuit diagram of the driving part of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model is shown in the figure.

[0047] Figure 7 The voltage acquisition circuit, short-circuit protection circuit, stroke detection circuit and Hall detection circuit diagram of the driving part of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model are shown in the figure.

[0048] Figure 8 The temperature detection circuit, current acquisition circuit and power-down detection circuit diagram of the driving part of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the embodiment of the utility model are shown in the figure. DETAILED DESCRIPTION

[0049] The technical scheme provided by the utility model will be further described below with reference to the drawings.

[0050] Referring toFigure 1 , as shown in the frame diagram of the intelligent safe remote permanent magnet variable frequency wireless controllable electric hoist device of the utility model, including motor 10, transmission mechanism 40 and hoisting mechanism 50, also including control part 30 and driving part 20, control part 30 and driving part 20 are connected with motor 10, control part 30 carries out wireless control and data and signal transmission to it, and driving part 20 outputs driving signal to motor 10. The motor 10 in the device is small in size, high in starting torque, meets high frequency continuous work, adopts a magnetic type cone brake, releases in the first time after power off, brake lock, horizontal full aluminum shell. The transmission mechanism 40 sets up multilayer helical tooth transmission gear in the reduction gearbox, runs silently and safely, and the reduction gearbox adopts completely sealed design. The hoisting mechanism 50 installs steel wire rope and metal hook on the outer layer of the winding drum, which is used for hoisting heavy objects.

[0051] The main control unit of driving part 20 uses N32G031C8L7 chip, can real-time analyze instructions and drive motor 10 to execute corresponding actions by combining program setting. At the same time, driving part 20 also has safety protection functions, such as overload protection, limit protection, electrical protection, wireless emergency stop and the like, to ensure the safe operation of electric hoist under remote control.

[0052] Control part 30 is used for sending control instructions and displaying electric hoist state. The remote control terminal communicates with electric hoist control system through 2.4G wireless network, to ensure the stability and reliability of data transmission. Control part 30 (specific embodiment can be remote control handle) establishes connection with electric hoist control system through wireless network, to realize bidirectional transmission of data.

[0053] Referring to Figures 2-4 Control part 30 includes single-chip microcomputer main control, level conversion circuit, abnormal reset circuit, low-power control circuit, rotating speed mode selection circuit, encoding switch circuit, hall pressing stroke detection circuit, IIC control circuit, power supply circuit, three-way low-voltage control signal input circuit, two-way relay output circuit and wireless interface module circuit connected with the single-chip microcomputer main control respectively;

[0054] The single-chip microcomputer main control includes HC32L130J8TA-LQ48 chip, which has flexible power management system, ultra-low power performance, 0.5uA @ 3V deep sleep mode, all clock power-on reset effective; IO state retention, IO interruption effective, all registers, RAM and CPU data save state power. 4uS ultra-low power wake-up time makes mode switching more flexible and efficient, and the system response is more agile;

[0055] The level conversion circuit is also connected with the driving board, and the level is converted to match different level requirements;

[0056] The abnormal reset circuit is provided with a button, and the button is pressed for manual reset;

[0057] The low-power control circuit comprises a P-channel field effect transistor; low standby power consumption is achieved;

[0058] The rotation speed mode selection circuit performs forward and reverse rotation switching and manual switching of constant variable speed control;

[0059] The encoding switch circuit performs pairing in the wireless mode and rotation speed setting in the constant speed mode;

[0060] The Hall pressing stroke detection circuit realizes different rotation speeds according to different Hall pressing strokes;

[0061] The IIC control circuit controls the display content of the digital tube;

[0062] The wireless interface module circuit receives and sends data and signals, and is provided with a reserved interface at a wiring end, and wireless adaptation is performed through the single-chip microcomputer main control;

[0063] The power supply circuit independently supplies power to circuits with different power supply requirements;

[0064] The three-way low-voltage control signal input circuit provides three-way control signal input and realizes self-defined functions;

[0065] The two-way relay output circuit controls two-way relays.

[0066] Referring to Figures 5-8 , the driving part 20 comprises a main controller and rectifier circuit, intermediate circuit, detection circuit, isolation power supply and bleeder circuit connected with the main controller, wherein,

[0067] The main controller comprises an N32G031C8L7 chip;

[0068] The rectifier circuit rectifies the power frequency power supply, and provides the required DC power supply for the inverter circuit and the control circuit;

[0069] The intermediate circuit is an energy storage device, and the motor 10 obtains energy from the intermediate circuit through the inverter;

[0070] The detection circuit comprises a self-locking protection circuit, an overvoltage detection circuit, an emergency stop detection circuit, a voltage acquisition circuit, a short circuit protection circuit, a stroke detection circuit, a Hall detection circuit, a temperature detection circuit, a current acquisition circuit and a power failure detection circuit;

[0071] The isolation power supply performs voltage boosting and voltage reduction;

[0072] The bleeder circuit monitors the capacitor voltage in real time, and releases the capacitor voltage when the capacitor voltage is overvoltage.

[0073] The encoding switch circuit comprises a rotary encoder EC11E15244G1. The Hall pressing stroke detection circuit comprises an AH49HSC chip. The IIC control circuit comprises a TM1650 chip. The emergency stop detection circuit comprises an EL817C optical coupling chip. The current acquisition circuit comprises an HT8632 operational amplifier. The isolation power supply comprises an SD6834 power management chip.

[0074] The operator adjusts the rotation speed and start-stop instruction in real time through the control part 30 (remote control handle), and the instruction is sent to the driving part 20 through a wireless network. After receiving the control instruction, the driving part 20 analyzes the instruction content and controls the motor 10 to execute the corresponding action. For example, when receiving the start instruction, the motor 10 starts to operate; when receiving the stop instruction, the motor 10 stops operating; when receiving the rotation speed adjustment instruction, the rotation speed of the motor 10 is adjusted according to the instruction. In order to ensure safety, the power-off emergency stop function is also added. The driving part 20 monitors the running state of the electric hoist (such as the current rotation speed, load condition, fault information, etc.) in real time, and sends the state information back to the control part 30 through the wireless network for display, for the reference of the operator.

[0075] The above description of the embodiments is only used to help understand the method of the utility model and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principles of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device, comprising a motor, a transmission mechanism, and a hoisting mechanism, characterized in that: The motor is also provided with a control unit and a drive unit, both of which are connected to the motor. The control unit wirelessly controls the motor and transmits data and signals to the motor, and the drive unit outputs a drive signal to the motor. The control unit includes a single-chip microcomputer main control and a level conversion circuit, an abnormality reset circuit, a low-power control circuit, a speed mode selection circuit, an encoding switch circuit, a Hall effect pressing stroke detection circuit, an IIC control circuit, a power supply circuit, three low-voltage control signal input circuits, two relay output circuits, and a wireless interface module circuit, which are respectively connected to the single-chip microcomputer main control. Wherein, the single chip microcomputer main control includes HC32L130J8TA-LQ48 chip; The level conversion circuit is also connected to the driver board to convert the level to match different level requirements; A button is set in the abnormal reset circuit, and manual reset is performed by pressing the button; The low power consumption control circuit includes a P-channel field effect transistor to achieve low standby power consumption; The speed mode selection circuit performs manual switching between forward and reverse switching and constant speed control; The coding switch circuit is used for pairing in wireless mode and speed setting in fixed speed mode; The Hall effect detection circuit can realize different rotation speeds according to the different Hall effect strokes. The IIC control circuit controls the display content of the digital tube; The wireless interface module circuit receives and sends data and signals, and its connection terminal is equipped with a reserved interface, which is wirelessly adapted by the single-chip main control; Power supply circuit, independently supplying power to circuits with different power supply requirements; Three-way low-voltage control signal input circuit provides three-way control signal input to achieve custom functions; Two-way relay output circuit controls two-way relays.

2. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 1, characterized in that: The driving unit includes a main controller and a rectifier circuit, an intermediate circuit, a detection circuit, an isolation power supply and a discharge circuit all connected to the main controller, wherein: The main controller includes the N32G031C8L7 chip; The rectifier circuit rectifies the industrial frequency power supply to provide the required DC power for the inverter circuit and the control circuit; The intermediate circuit is an energy storage device, and the motor obtains energy from the intermediate circuit through the inverter; The detection circuit includes a self-locking protection circuit, an overvoltage detection circuit, an emergency stop detection circuit, a voltage acquisition circuit, a short-circuit protection circuit, a stroke detection circuit, a Hall detection circuit, a temperature detection circuit, a current acquisition circuit, and a power-off detection circuit; Isolate the power supply to step up and down the voltage; The discharge circuit monitors the capacitor voltage in real time and releases the capacitor voltage when the capacitor voltage is overvoltage.

3. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 1, characterized in that: The encoding switch circuit includes a rotary encoder EC11E15244G1.

4. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 1, characterized in that: The Hall effect pressing stroke detection circuit includes an AH49HSC chip.

5. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 1, characterized in that: The IIC control circuit includes a TM1650 chip.

6. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 2, characterized in that: The emergency stop detection circuit includes an EL817C optocoupler chip.

7. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 2, characterized in that: The current acquisition circuit includes an HT8632 operational amplifier.

8. The intelligent, safe, remote, permanent magnet, variable frequency, wirelessly controllable electric hoist device according to claim 2, characterized in that: The isolated power supply includes an SD6834 power management chip.

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