Control device for large and small shear lifting machine

Abstract

The utility model relates to a control device of a large and small shear lifting machine. Comprising a single-chip microcomputer power supply module, a control part CPU, a relay drive circuit, a key input circuit, a low limit detection circuit and a buzzer alarm circuit. The single-chip microcomputer power supply module comprises two groups of secondary transformers. The control part CPU is connected with the relay through a driving chip and controls the relay to work; the key input circuit comprises an ascending key, a descending key and a safety key which are all connected to the control part CPU; the low limit detection circuit is connected to the control part CPU; and the buzzer alarm circuit is connected to the control part CPU. The technical problems that in the prior art, a conventional lifting machine control device usually adopts an intermediate relay and a time relay which are separated in a matched mode for control, the number of relays is large, the size is large, and meanwhile faults are prone to occurring in the control mode are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lifting machine control device field especially relates to a big and small shear lifting machine control device. BACKGROUND

[0002] In the automobile repair industry, the lifting machine as important auxiliary equipment, its performance and safety directly influence repair efficiency and personnel safety. With the rapid development of automobile industry, the demand of lifting machine also grows day by day, especially in the demand of functionality and intelligent.

[0003] The mainstream lifting machine control device in the market at present adopts discrete intermediate relay and time relay cooperation control, and this control mode has problems such as many relays, large volume and easy to malfunction. In addition, for the occasion needing secondary lifting, the conventional control device is difficult to meet the demand. UTILITY MODEL CONTENT

[0004] The embodiment of the application provides a big and small shear lifting machine control device, solves the technical problems that the conventional lifting machine control device in the prior art scheme usually adopts discrete intermediate relay and time relay cooperation control, and the control mode has more relays, large volume and is easy to malfunction.

[0005] The technical scheme adopted by the embodiment of the application is as follows:

[0006] A big and small shear lifting machine control device, including single-chip microcomputer power module, control part CPU, relay drive circuit, key input circuit, low limit position detection circuit and buzzer alarm circuit, the single-chip microcomputer power module includes two groups of secondary transformer, the control part CPU is connected through drive chip and controls the work of relay, the key input circuit includes up button, down button and safety button, and all are connected to control part CPU, the low limit position detection circuit is connected to control part CPU, the buzzer alarm circuit is connected to control part CPU.

[0007] Further technical scheme is that the up button, the down button and the safety button all adopt touch type design.

[0008] One or more technical schemes provided in the embodiment of the application have at least the following technical effects or advantages:

[0009] 1、Due to the adoption of single-chip microcomputer power module, control part CPU, relay drive circuit, key input circuit, low limit detection circuit and buzzer alarm circuit, compared with the cooperation control of discrete intermediate relay and time relay, the device uses single-chip microcomputer for control, greatly reduces the number of relays, reduces the size of the control device, and enhances the overall compactness of the device. This not only helps to save space, but also reduces the failure rate and improves the reliability of the control device. Through single-chip microcomputer control, the integration of the circuit is realized, the failure points are effectively reduced, the maintenance cost is reduced, and the maintenance efficiency is improved. Through intelligent detection of upper and lower limits, the safety of the lifting platform during the rising and falling process is ensured. When the large shear part is lowered to the low limit, the lifting platform automatically stops and sends a buzzer warning to remind the surrounding personnel to pay attention to safety. This intelligent detection function greatly reduces the risk of accidents and improves the safety during use. In addition, by setting the safety button, the oil circuit unloading valve is opened, the lifting platform is locked, and the platform is prevented from tilting and accidental falling. This design effectively improves the safety of the lifting platform in emergency situations and provides an additional layer of safety protection for the operator. In terms of energy saving, by using two groups of secondary transformers to supply power to the chip and the electromagnetic valve and the relay, the power supply is optimized, the energy utilization rate is improved, and the energy consumption is reduced. At the same time, the three external connected buttons (up, down, safety button) make the operation more convenient and improve the operation efficiency. In summary, compared with the prior art, the following beneficial effects are achieved: reducing the number of relays, reducing the size of the device, and improving the reliability; reducing the failure rate, reducing the maintenance cost; increasing the intelligent detection function, improving the use safety; providing safety protection in emergency situations; optimizing the power supply configuration, reducing the energy consumption; realizing the integration of the control part, and improving the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a flowchart of the control device of the large and small shear lifting machine in the embodiment of the utility model.

[0011] Figure 2 It is a power rectifier circuit of the control device of the large and small shear lifting machine in the embodiment of the utility model. DETAILED DESCRIPTION

[0012] The embodiment of the application provides a control device of a large and small shear lifting machine, which solves the technical problems of the conventional lifting machine control device in the prior art, that is, the conventional lifting machine control device usually adopts discrete intermediate relays and time relays for cooperation control, and such a control mode has many relays, large size, and is prone to failure.

[0013] The technical scheme in the embodiment of the application is as follows to solve the above problems:

[0014] For better understanding of the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings and specific embodiments of the specification.

[0015] A size shearing elevator control device, as shown in Figure 1 and Figure 2 It includes a single-chip microcomputer power module, a control part CPU, a relay driving circuit, a key input circuit, a low limit detection circuit and a buzzer alarm circuit; the single-chip microcomputer power module includes two groups of secondary transformers; the control part CPU is connected to and controls the work of the relay through a driving chip; the key input circuit includes an up key, a down key and a safety key, and is all connected to the control part CPU; the low limit detection circuit is connected to the control part CPU; the buzzer alarm circuit is connected to the control part CPU.

[0016] The up key, the down key and the safety key all adopt a touch type design.

[0017] The single-chip microcomputer power module includes two groups of secondary transformers, wherein the first group of secondary transformers is used to provide stable power supply for the CPU chip, ensuring that the CPU is not affected by power fluctuations during operation; the second group of secondary transformers is used to provide power supply for the electromagnetic valve and the relay, ensuring the normal work of the driving components; the control part CPU: adopts STM8105K4 microcontroller, with high performance and stable control ability, connected with the relay driving circuit through the ULN2003 driving chip, to realize accurate control of the relay work; the relay driving circuit: cooperates with the ULN2003 driving chip, with high current driving capability, ensuring the reliable work of the relay; the key input circuit: including the up key, the down key and the safety key, which are directly connected to the CPU for inputting control signals to realize direct control of the lifting machine operation; the low limit detection circuit: connected to the CPU, including at least one sensor and the corresponding signal processing circuit, for real-time detection of whether the large shear part of the lifting platform is lowered to the set low limit, ensuring the safe operation of the lifting platform; the buzzer alarm circuit: connected to the CPU, including the buzzer and the control switch, for issuing an alarm sound when an abnormal situation is detected, reminding the operator to take timely measures. The up key, the down key and the safety key in the key input circuit are directly connected to the CPU, and through the logical processing in the CPU, the control functions of the lifting platform rising, descending and unloading are realized, improving the flexibility and reliability of the control. The relay driving circuit includes the ULN2003 driving chip, which has high current driving capability and can reliably drive the relay to work, ensuring accurate transmission of control signals and avoiding signal loss or misoperation. The low limit detection circuit includes at least one sensor and the corresponding signal processing circuit, the sensor is used to monitor the position of the lifting platform in real time, and the signal processing circuit converts the sensor signal into a digital signal recognizable by the CPU, ensuring accurate detection of the position and improving the accuracy of safety monitoring. The buzzer alarm circuit includes the buzzer and the control switch, which is controlled by the CPU, when the lifting platform reaches the low limit, the CPU triggers the control switch to make the buzzer emit a clear alarm sound, reminding the operator to pay attention, thereby ensuring the operation safety. The single-chip microcomputer power module further includes a voltage stabilizing circuit, which can ensure that the CPU chip and the electromagnetic valve and the relay can still obtain stable and reliable power supply under adverse conditions such as power fluctuations, thereby ensuring the stable operation of the entire control device and improving the reliability and safety of the lifting machine system.

[0018] Due to the adoption of single-chip microcomputer power module, control part CPU, relay drive circuit, key input circuit, low limit detection circuit and buzzer alarm circuit, compared with the cooperation control of discrete intermediate relay and time relay, the device uses single-chip microcomputer for control, greatly reduces the number of relays, reduces the size of the control device, and enhances the overall compactness of the device. This not only helps to save space, but also reduces the failure rate and improves the reliability of the control device. Through single-chip microcomputer control, the integration of the circuit is realized, the failure points are effectively reduced, the maintenance cost is reduced, and the maintenance efficiency is improved. Through intelligent detection of upper and lower limits, the safety of the lifting platform during the rising and falling process is ensured. When the large shear part is lowered to the low limit, the lifting platform automatically stops and sends a buzzer warning to remind the surrounding personnel to pay attention to safety. This intelligent detection function greatly reduces the risk of accidents and improves the safety during use. In addition, by setting the safety button, the oil circuit unloading valve is opened to lock the lifting platform, preventing the platform from tilting and accidentally falling. This design effectively improves the safety of the lifting platform in emergency situations, providing an additional layer of safety protection for the operator. In terms of energy saving, by using two groups of secondary transformers to supply power to the chip and solenoid valve and relay, the power supply is optimized, the energy utilization rate is improved, and the energy consumption is reduced. At the same time, the three external connected buttons (up, down, safety button) make the operation more convenient and improve the operation efficiency. In summary, compared with the prior art, the following advantages are obtained: the number of relays is reduced, the device size is reduced, and the reliability is improved; the failure rate is reduced, the maintenance cost is reduced; the intelligent detection function is increased, the use safety is improved; the safety in emergency situations is provided; the power supply configuration is optimized, the energy consumption is reduced; the control part is integrated, and the operation efficiency is improved.

[0019] Although the preferred embodiments of the present application have been described, those skilled in the art who have the basic inventive concept can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0020] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A size shears lift control apparatus, characterized by, The utility model relates to a kind of elevator control panel, including single-chip microcontroller power module, control part CPU, relay drive circuit, key input circuit, low limit detection circuit and buzzer alarm circuit;The single-chip microcontroller power module includes two groups of secondary transformer;The control part CPU is connected by drive chip and controls the work of relay;The key input circuit includes up button, down button and safety button, and is all connected to control part CPU;The low limit detection circuit is connected to control part CPU;The buzzer alarm circuit is connected to control part CPU.

2. A size shears lift control device as claimed in claim 1, characterised in that, The up button, the down button and the safety button all adopt touch design.

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