Control device and hydraulic plate turnover machine

Abstract

The utility model discloses a control device and a hydraulic plate turnover machine, the hydraulic plate turnover machine comprises a lifting proportional valve, a reversing proportional valve, a first hydraulic rod and a second hydraulic rod, the lifting proportional valve is used for controlling the lifting speed of the first hydraulic rod and the second hydraulic rod, and the reversing proportional valve is used for controlling the height difference of the first hydraulic rod and the second hydraulic rod. The control device comprises a main controller; the input end of the first controller is electrically connected with the main controller, the output end of the first controller is electrically connected with the input end of the lifting proportional valve, and the first controller is used for controlling work of the lifting proportional valve according to a first control signal output by the main controller; the input end of the second controller is electrically connected with the main controller, the output end of the second controller is electrically connected with the input end of the lifting proportional valve, and the second controller is used for controlling the reversing proportional valve to work according to a second control signal output by the main controller. The utility model aims to improve the working stability of the hydraulic plate turnover machine.

Description

Technical Field

[0001] The utility model relates to the technical field of panel turning machine control, in particular to a control device and a hydraulic panel turning machine. Background Art

[0002] The two jacking devices in the hydraulic flap electronic control system can drive the rear flip platform to complete the back flip action. However, due to the large span, long platform and heavy load of the rear flip platform, there are high requirements for the synchronization between the two jacking devices in the electronic control system. The lifting and lowering process of the rear flip platform must be smooth and reliable, and the position must remain locked reliably during the intermediate process. The current electronic control system is difficult to meet the usage requirements.

[0003] The following problems are summarized in the current use of rear flip platforms:

[0004] (1) After the vehicle is driven onto the flap platform, the position is not correct, causing deviation of the two lifting devices.

[0005] (2) During the lifting process, the platform has a long travel distance and cumulative errors are inevitable. The platform may stop and alarm due to large deviations on both sides. Utility Model Content

[0006] The main purpose of the utility model is to provide a control device, aiming at improving the working stability of the hydraulic flap machine.

[0007] To achieve the above-mentioned purpose, the control device proposed in the utility model is applied to a hydraulic flap machine, the hydraulic flap machine includes a lifting proportional valve, a reversing proportional valve, a first hydraulic rod and a second hydraulic rod, the lifting proportional valve is used to control the lifting rate of the first hydraulic rod and the second hydraulic rod, the reversing proportional valve is used to control the height difference between the first hydraulic rod and the second hydraulic rod, and the control device includes:

[0008] Main controller;

[0009] a first controller, wherein an input end of the first controller is electrically connected to the main controller, an output end of the first controller is electrically connected to an input end of the lifting proportional valve, and the first controller is used to control the operation of the lifting proportional valve according to a first control signal output by the main controller;

[0010] A second controller, the input end of the second controller is electrically connected to the main controller, the output end of the second controller is electrically connected to the input end of the reversing proportional valve, and the second controller is used to control the operation of the reversing proportional valve according to a second control signal output by the main controller.

[0011] Optionally, the control device also includes a temperature detection device, which is arranged in a hydraulic oil tank that supplies oil to the first hydraulic rod and the second hydraulic rod. The output end of the temperature detection device is electrically connected to the input end of the main controller. The temperature detection device is used to detect the temperature in the hydraulic oil tank and output a temperature detection signal.

[0012] Optionally, the control device further comprises a temperature regulating device, an input end of which is electrically connected to the main controller, and the temperature regulating device is used to control the temperature of the first hydraulic rod and the second hydraulic rod according to a temperature regulating signal output by the main controller.

[0013] Optionally, the temperature regulating device comprises a heating device, an input end of the heating device is electrically connected to the main controller, and the heating device is used to control the temperature increase of the first hydraulic rod and the second hydraulic rod according to a heating signal output by the main controller.

[0014] Optionally, the temperature regulating device includes a cooling device, an input end of which is electrically connected to the main controller, and the cooling device is used to control the temperature reduction of the first hydraulic rod and the second hydraulic rod according to a cooling signal output by the main controller.

[0015] Optionally, the control device further includes a voltage conversion device, and the voltage conversion device includes:

[0016] A first voltage conversion circuit, wherein an input end of the first voltage conversion circuit is electrically connected to the voltage input end, and the first voltage conversion circuit is used for converting the input alternating current into a first voltage for output;

[0017] The second voltage conversion circuit has an input terminal electrically connected to the voltage input terminal, and the second voltage conversion circuit is used for converting the input alternating current into a second voltage for output.

[0018] Optionally, the control device further comprises a plurality of switch circuits, the input ends of the plurality of switch circuits being electrically connected to the voltage input end, and the output ends being electrically connected to each device module respectively, for opening or closing the path between the voltage input end and each device module.

[0019] The utility model also provides a hydraulic panel turning machine, which includes a control device as described in any one of the above items.

[0020] Optionally, the hydraulic flap machine includes an operation panel, an output end of the operation panel is electrically connected to the main controller, and the operation panel is used to input control signals.

[0021] Optionally, the hydraulic flap machine includes two groups of control devices and a conversion switch, and the conversion switch is used to connect the path between one group of control devices in the two groups and the voltage input terminal, and disconnect the path between the other group of control devices and the voltage input terminal.

[0022] The technical solution of the utility model adopts a control device and is applied to a hydraulic flap machine. The hydraulic flap machine includes a lifting proportional valve, a reversing proportional valve, a first hydraulic rod and a second hydraulic rod. The lifting proportional valve is used to control the lifting and lowering speed of the first hydraulic rod and the second hydraulic rod, and the reversing proportional valve is used to control the height difference between the first hydraulic rod and the second hydraulic rod. The main controller controls the output of a first control signal to control the first controller, so that it controls the opening size of the lifting proportional valve, thereby realizing the control of the lifting and lowering speed of the first hydraulic rod and the second hydraulic rod. The main controller controls the output of a second control signal to control the second controller, so that it controls the size of the left and right openings of the reversing proportional valve, thereby respectively controlling the volume of the hydraulic oil in the first hydraulic rod and the second hydraulic rod, so that the height difference is kept within the preset height difference. Through the control of the first controller and the second controller by the main controller, the lifting proportional valve and the reversing proportional valve regulate the operation of the first hydraulic rod and the second hydraulic rod, thereby improving the working stability of the hydraulic flap machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a module schematic diagram of the control device of the utility model;

[0025] Figure 2 This is a module schematic diagram of an embodiment of the control device of the utility model;

[0026] Figure 3 It is a circuit diagram of the control device of the utility model.

[0027] Description of Figure Numbers:

[0028] Label name Label name 10 Main Controller 42 Cooling device 20 First Controller 50 Voltage conversion device 30 Second controller 51 First voltage conversion circuit 40 Temperature control device 52 Second voltage conversion circuit 41 Heating device 60 Switching Circuit

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] The two jacking devices in the hydraulic flap electronic control system can drive the rear flip platform to complete the back flip action. However, due to the large span, long platform and heavy load of the rear flip platform, there are high requirements for the synchronization between the two jacking devices in the electronic control system. The lifting and lowering process of the rear flip platform must be smooth and reliable, and the position must remain locked reliably during the intermediate process. The current electronic control system is difficult to meet the usage requirements.

[0034] The following problems can be summarized based on the current usage of rear-flip platforms: after the vehicle drives onto the flip platform, the position is not correct, causing deviations of the two jacking devices; during the jacking process, the platform has a long stroke and cumulative errors are inevitable, and the platform will have a shutdown alarm due to large deviations on both sides.

[0035] Therefore, reference Figure 1 and Figure 3 The utility model proposes a control device, which is applied to a hydraulic flap machine. The hydraulic flap machine includes a lifting proportional valve, a reversing proportional valve, a first hydraulic rod and a second hydraulic rod. The lifting proportional valve is used to control the lifting speed of the first hydraulic rod and the second hydraulic rod. The reversing proportional valve is used to control the height difference between the first hydraulic rod and the second hydraulic rod. The control device includes:

[0036] Main controller 10;

[0037] A first controller 20, wherein an input end of the first controller 20 is electrically connected to the main controller 10, an output end of the first controller 20 is electrically connected to an input end of the lifting proportional valve, and the first controller 20 is used to control the operation of the lifting proportional valve according to a first control signal output by the main controller 10;

[0038] The second controller 30, the input end of the second controller 30 is electrically connected to the main controller 10, the output end of the second controller 30 is electrically connected to the input end of the reversing proportional valve, and the second controller 30 is used to control the operation of the reversing proportional valve according to the second control signal output by the main controller 10.

[0039] It should be understood that the lifting proportional valve, as a proportional control element, can continuously and accurately adjust the flow of the hydraulic system according to the input electrical signal (such as current or voltage). In the hydraulic flap machine, by changing the opening size of the proportional valve, the flow of hydraulic oil entering the hydraulic cylinder can be accurately controlled, thereby achieving accurate control of the rising or falling speed of the flap. This refined flow regulation capability helps to avoid the flap moving too fast, resulting in excessive impact or too slow, which affects work efficiency. The reversing proportional valve is a valve that can continuously and accurately control the direction and flow of the hydraulic system according to the input electrical signal. The lifting proportional valve and the reversing proportional valve focus on the flow control and direction control of the hydraulic system in the hydraulic flap machine, respectively, and may have some of the other's functions. The lifting proportional valve pays more attention to the fineness of speed regulation, while the reversing proportional valve emphasizes the comprehensive performance of direction switching and speed control.

[0040] In this embodiment, the main controller 10 can be implemented by, for example, PLC (Programmable Logic Controller), MCU (Microcontroller Unit), DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), SOC (System On Chip), etc. Among them, PLC (Programmable Logic Controller) is taken as an example. PLC can realize logical judgment and control operations through user programming, replace traditional relay contactor circuits, and realize complex logical control functions. For example, according to the combination of multiple input signals, it is determined whether to start or stop a certain device, or control the sequential switching of the production process. It can accurately execute a series of operation steps according to the preset sequential control process (such as ladder diagram, function block diagram, etc.). Its built-in timer and counter function allows PLC to trigger actions according to time intervals or event times, and realize control tasks such as timed start, delayed shutdown, and count to limit alarm. A PLC equipped with an analog input / output module can process continuously changing physical quantities (such as temperature, pressure, flow, liquid level, etc.), convert analog signals into digital quantities for processing through A / D conversion, and then output the control results to actuators (such as PID controllers, frequency converters, etc.) through D / A conversion to achieve precise control of process variables.

[0041] In this embodiment, both the first controller 20 and the second controller 30 can be implemented by a synchronous controller, specifically a spatial positioning controller. The first controller 20 further outputs a corresponding control signal to the lifting proportional valve by obtaining the first control signal output by the main controller 10, thereby controlling the opening size of the lifting proportional valve. The lifting and lowering rates of the first hydraulic rod and the second hydraulic rod are controlled by the opening size of the lifting proportional valve. Specifically, when the hydraulic flap machine rises, the first controller 20 set at the bottom center of the flap machine is connected to the PLC analog quantity AI1+ input; the first controller 20 of the first hydraulic rod and the second hydraulic rod feeds back the displacement information to the PLC AI1+, and the first controller 20 outputs the analog quantity value AQ0 and transmits it to the lifting proportional valve to control the opening size. The opening size is used to control the speed of the lifting and lowering of the first hydraulic rod and the second hydraulic rod, thereby achieving a balance between the two lifting devices. Similarly, the working process of the hydraulic flap machine when it descends can be obtained.

[0042] In this embodiment, the second controller 30 further outputs a corresponding control signal to the reversing proportional valve through the second control signal output by the main controller 10, thereby controlling the opening size of the reversing proportional valve. The lifting and lowering rates of the first hydraulic rod and the second hydraulic rod are respectively controlled by the size of the left and right openings of the reversing proportional valve. Among them, when the left opening of the reversing proportional valve is larger than the right opening, the lifting and lowering rate of the first hydraulic rod will be greater than the lifting and lowering rate of the second hydraulic rod; when the left opening of the reversing proportional valve is smaller than the right opening, the lifting and lowering rate of the first hydraulic rod will be smaller than the lifting and lowering rate of the second hydraulic rod. In this way, the lifting and lowering rates of the first hydraulic rod and the second hydraulic rod are respectively controlled, so that the height difference between the first hydraulic rod and the second hydraulic rod is controlled. Specifically, in the hydraulic flip machine, when the first hydraulic rod and the second hydraulic rod rise synchronously, the second controller 30 will monitor the horizontal deviation value of the platform in real time. The second controller 30 is connected to the PLC analog quantity AI0+ input, and the detection amount is fed back to the PLC AI0+. The second controller 30 outputs the analog quantity AQ1 value and transmits it to the reversing proportional valve to control the size of the left and right openings. For example, if the rising speed of the first hydraulic rod is greater than that of the second hydraulic rod, and the PLC program sets the deviation angle to be greater than 0.3°, by adjusting the left opening of the reversing proportional valve AQ1 to be greater than the right opening, the oil unloading amount of the first hydraulic rod is greater than the oil unloading amount of the second hydraulic rod, thereby reducing the rising speed of the first hydraulic rod. If the rising speed of the first hydraulic rod is less than the rising speed of the second hydraulic rod, the PLC program sets the deviation angle to be less than -0.3°, and by adjusting the left opening of the reversing proportional valve AQ1 to be less than the right opening, the oil unloading amount of the first hydraulic rod is less than the oil unloading amount of the second hydraulic rod, thereby reducing the rising speed of the second hydraulic rod to achieve a synchronous technical effect. If the height difference between the first hydraulic rod and the second hydraulic rod is greater than 0.8° or less than -0.8°, the control device will output a warning control signal to the warning circuit, causing the warning circuit to output a warning signal to prompt the operator.

[0043] In this embodiment, the main controller 10 controls the output of the first control signal to control the first controller 20, so that it controls the opening size of the lifting proportional valve, thereby realizing the control of the lifting rate of the first hydraulic rod and the second hydraulic rod. The main controller 10 controls the output of the second control signal to control the second controller 30, so that it controls the size of the left and right openings of the reversing proportional valve, thereby realizing the control of the volume of the hydraulic oil in the first hydraulic rod and the second hydraulic rod respectively, so that the height difference is kept within the preset height difference. Through the control of the first controller 20 and the second controller 30 by the main controller 10, the lifting proportional valve and the reversing proportional valve regulate the operation of the first hydraulic rod and the second hydraulic rod, thereby improving the working stability of the hydraulic flap machine.

[0044] In one embodiment of the utility model, the control device also includes a temperature detection device, which is arranged in a hydraulic oil tank that supplies oil to the first hydraulic rod and the second hydraulic rod. The output end of the temperature detection device is electrically connected to the input end of the main controller 10. The temperature detection device is used to detect the temperature in the hydraulic oil tank and output a temperature detection signal.

[0045] It is important to understand that temperature has a critical impact on the hydraulic oil in the hydraulic rod. When the temperature rises, the molecular movement of the hydraulic oil speeds up, resulting in a decrease in the viscosity of the oil. Reduced viscosity means that the flow resistance of the oil is reduced and the fluidity is enhanced. This is conducive to the rapid response and efficient operation of the hydraulic system, but it may also lead to increased internal leakage, reduce the volumetric efficiency of the system, and thus affect the thrust and speed control accuracy of the hydraulic rod. Conversely, when the temperature decreases, the viscosity of the hydraulic oil increases and the fluidity deteriorates, which may lead to a slow response of the hydraulic system, difficulty in oil suction of the hydraulic pump, slow movement of the hydraulic rod, and increased energy consumption due to increased friction. Furthermore, in a high temperature environment, the oxidation rate of the hydraulic oil is accelerated, resulting in oil aging, increased acid value, increased sludge and sediment, and affecting the lubrication performance and corrosion resistance of the oil. The service life of hydraulic oil that is exposed to high temperature for a long time is significantly shortened and needs to be replaced more frequently. High temperature may also destroy the chemical structure of additives (such as antioxidants, anti-wear agents, etc.) in the hydraulic oil, reduce their effectiveness and stability, and affect the overall performance of the oil. Temperature has many negative effects on the hydraulic oil in the hydraulic rod, including changing the oil viscosity, accelerating oil aging, generating bubbles, affecting lubrication, damaging the performance of seals, promoting corrosion, and reducing system efficiency. Therefore, it is very important to maintain the hydraulic oil within the appropriate operating temperature range (usually 30°C to 70°C, depending on the specific oil and application conditions) and to ensure the stable, efficient and long-life operation of the hydraulic rod through reasonable cooling and temperature monitoring measures.

[0046] In this embodiment, the temperature detection device can be implemented by a detection circuit based on a thermistor, such as a resistor voltage divider circuit based on an NTC resistor or an NTC probe, or a resistor voltage divider circuit based on a PTC resistor or a PTC probe. Optionally, the temperature detection device can also be implemented by a temperature sensor, such as an infrared temperature sensor, a thermocouple temperature sensor, etc. There can be multiple temperature detection devices, and the multiple temperature detection devices can be arranged at different positions in the hydraulic oil tank supplying oil to the first hydraulic rod and the second hydraulic rod. The main controller can determine multiple temperature values ​​based on multiple temperature detection signals, and calculate the temperature in the hydraulic oil tank through a preset temperature algorithm, such as an average value, a weighted calculation, etc., so as to improve the accuracy of the temperature detection in the hydraulic oil tank supplying oil to the first hydraulic rod and the second hydraulic rod.

[0047] Further, refer to Figure 2 and Figure 3 The control device also includes a temperature regulating device 40, an input end of which is electrically connected to the main controller 10, and the temperature regulating device 40 is used to control the temperature of the first hydraulic rod and the second hydraulic rod according to the temperature regulating signal output by the main controller 10.

[0048] Specifically, the temperature regulating device 40 includes a heating device 41 , an input end of which is electrically connected to the main controller 10 , and the heating device 41 is used to control the temperature increase of the first hydraulic rod and the second hydraulic rod according to the heating signal output by the main controller 10 .

[0049] The temperature regulating device 40 includes a cooling device 42 , the input end of which is electrically connected to the main controller 10 , and the cooling device 42 is used to control the temperature reduction of the first hydraulic rod and the second hydraulic rod according to the cooling signal output by the main controller 10 .

[0050] In this embodiment, the heating device 41 can be implemented by heating by using resistance materials such as heating wires, heating plates, ceramic heating elements, etc., using the Joule heat generated when current passes through the conductor. Specifically, take the heating wire as an example. One end of the three groups of heating wires are electrically connected to the A phase, B phase, and C phase of the three-phase alternating current, respectively, and the other end is interconnected with the remaining two groups of heating wires and electrically connected to the neutral line, thereby forming a group of heating devices 41, so that the first hydraulic rod and the second hydraulic rod can be heated evenly. It should be understood that the current flowing through the heating wire will be controlled by the corresponding heating signal output by the main controller 10, and the main controller 10 will output the heating signal control according to the temperature detection signal fed back by the temperature detection device and the preset temperature interval, thereby ensuring that the temperature of the first hydraulic rod and the second hydraulic rod is within a suitable temperature range, and then the hydraulic oil in the hydraulic rod is at a suitable working temperature, effectively ensuring the stable, efficient and long-life operation of the hydraulic rod.

[0051] In this embodiment, the cooling device 42 can be implemented by an air cooling device, a liquid cooling device, etc. Specifically, an air cooling device is taken as an example. Among them, the voltage input end of the air cooling motor is electrically connected to one phase of the three-phase alternating current, and the output end is electrically connected to the neutral line. The air cooling motor is controlled by receiving the corresponding cooling signal output by the main controller 10, and the main controller 10 outputs the cooling signal control according to the temperature detection signal fed back by the temperature detection device and the preset temperature interval, thereby ensuring that the temperature of the first hydraulic rod and the second hydraulic rod is within a suitable temperature range, and then the hydraulic oil in the hydraulic rod is at a suitable working temperature.

[0052] Furthermore, the heating device 41 and the cooling device 42 are both provided with corresponding circuit breakers, AC contactors, and relays to protect and control the normal operation of the heating device 41 and the cooling device 42. Among them, the circuit breaker is actively disconnected when a circuit fault occurs to ensure safety; the AC contactor is specially used to control the main circuit of large current, suitable for frequent operation and high-power equipment, and has a large contact capacity and an arc extinguishing device; the relay changes the circuit state according to the control signal to realize automatic control and remote operation.

[0053] refer to Figure 2 and Figure 3 In one embodiment of the present utility model, the control device further includes a voltage conversion device 50, and the voltage conversion device 50 includes:

[0054] A first voltage conversion circuit 51, wherein an input terminal of the first voltage conversion circuit 51 is electrically connected to the voltage input terminal, and the first voltage conversion circuit 51 is used for converting the input alternating current into a first voltage for output;

[0055] The second voltage conversion circuit 52 has an input terminal electrically connected to the voltage input terminal, and the second voltage conversion circuit 52 is used for converting the input alternating current into a second voltage for output.

[0056] In this embodiment, the first voltage conversion circuit 51 and the second voltage conversion circuit 52 can be implemented by a rectifier circuit and a DC / DC voltage conversion circuit, that is, an AC / DC voltage converter. The output end of the first voltage conversion circuit 51 is the main controller 10, and the output end of the second voltage conversion circuit 52 is a remote control device. Among them, the remote control device is a wired remote control device, which is electrically connected to the main controller 10 through a wire, so that the operator can work away from the hydraulic flip machine to ensure the operator's operation safety. Specifically, when the voltage required by the main controller 10 is a DC voltage and the power supply voltage is an AC voltage, the AC / DC voltage converter can output the input AC voltage as a DC voltage according to the required preset value. If the input AC / DC voltage converter AC voltage is 220V, the AC / DC voltage converter can convert the input 220V AC voltage into a 24V DC voltage through an internal circuit and output it to the main controller 10, so that the main controller 10 can work. Similarly, the second voltage conversion circuit 52 converts the AC input into a DC output to the remote control device.

[0057] In one embodiment of the utility model, the control device also includes a plurality of switch circuits 60, the input ends of the plurality of switch circuits 60 are electrically connected to the voltage input ends, and the output ends are electrically connected to each device module respectively, for opening or closing the path between the voltage input ends and each device module.

[0058] In this embodiment, the multiple switch circuits 60 can be implemented by at least one switch tube, such as a MOS tube, an IGBT tube, a thyristor, a triode, a power tube, etc., and / or by at least one switch device, such as an AC contactor, a circuit breaker, and a relay. The switch circuits 60 are respectively arranged between device modules such as the heating device 41, the cooling device 42, and the main controller 10 and the three-phase AC input terminal, and the path between the three-phase AC input and each device module is opened or closed by receiving a control signal and / or manually triggered.

[0059] The utility model also proposes a hydraulic panel flipper, which includes a control device as described in any one of the above. It is worth noting that since the hydraulic panel flipper of the utility model is based on the above control device, the embodiments of the hydraulic panel flipper of the utility model include all technical solutions of all embodiments of the above control device, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0060] In an embodiment of the present invention, the hydraulic panel flipper includes an operation panel, an output end of the operation panel is electrically connected to the main controller 10, and the operation panel is used to input a control signal.

[0061] In this embodiment, the operation panel can be implemented by a touch panel, a key trigger panel, etc. By setting the operation panel, the operator can directly set the lifting rate and lifting height of the first hydraulic rod and the second hydraulic rod. In addition, the operator can also set the preset alarm threshold of the height difference between the first hydraulic rod and the second hydraulic rod through the operation panel. When the height difference between the first hydraulic rod and the second hydraulic rod reaches the preset alarm threshold, the main controller 10 will control the early warning circuit to output an early warning signal. Among them, the operation panel and the remote control device are also provided with an emergency stop button, so that the operator can stop the lifting of the first hydraulic rod and the second hydraulic rod in time.

[0062] In one embodiment of the utility model, the hydraulic flap machine includes two groups of control devices and a conversion switch, and the conversion switch is used to connect the path between one group of control devices and the voltage input terminal, and disconnect the path between the other group of control devices and the voltage input terminal.

[0063] In this embodiment, in order to avoid failure of a single control device, two sets of control devices and a conversion switch are provided. When any set of control devices fails, the operator can replace the control device in time through the conversion switch to achieve timely control of the hydraulic flap machine, effectively reducing the risk of the hydraulic flap machine losing control due to failure of the control device.

[0064] In addition, the hydraulic flap machine also includes a motor. Among them, a main switch device is provided in the hydraulic flap machine, which is used to disconnect or conduct the path between the hydraulic flap machine and the three-phase AC input terminal. The main switch device is connected to the circuit breaker that controls the motor, and the circuit breaker is connected to the star-delta conversion AC contactor, and the star-delta conversion AC contactor is connected to the motor relay; the motor relay is connected to the motor, and the motor is connected to the AC contactor. Different voltages are applied to the three-phase winding of the motor during startup and normal operation to reduce the impact current when the motor starts. At startup, the motor winding is applied with a star-connected power supply, that is, the three live wires of the power supply are connected to one end of the three windings of the motor respectively, and the other end of the three windings of the motor is connected to the neutral line of the power supply at the same time. Under this connection method, the voltage carried by each winding of the motor is 220V. Due to the low voltage applied, the current at startup will be smaller, reducing the impact on the power grid, and the motor is easier to start. When the motor starts normally, its working current will be greatly reduced compared with that at the start. At this time, the control circuit changes the three windings of the motor to be connected end to end through the conversion of the time relay and contactor, forming the so-called triangle connection, and connects each "corner" of the triangle to the three live wires of the power supply. At this time, the voltage received by the motor winding becomes 380V, and the motor can work at full load. The pull-in is the star connection, and the pull-in is the triangle connection.

[0065] It is important to understand that Figure 3 The labels are: QF0 main circuit breaker, QF1 motor circuit breaker, KM2 AC contactor, FR1 motor thermal relay, KM1 AC contactor, KM3 AC contactor, QF2 heater circuit breaker, KM4 heater AC contactor, QF6 fan circuit breaker, KM5 fan AC contactor, FR2 fan thermal relay, QF3 circuit breaker, FU2 fuse, KA2 intermediate relay normally open contact, FU3 fuse, FU8 fuse, SA1 key switch, KA1 intermediate relay line Coil, KA1 intermediate relay normally open contact, SB1 emergency stop button, SB22 remote control emergency stop button, KA2 intermediate relay coil, KA2 intermediate relay normally open contact, FU1 fuse, PLC programmable controller, KA3 intermediate relay normally open contact, FR1 thermal relay, KM2 AC contactor coil, KA4 intermediate relay normally open contact, KM4 AC contactor coil, KA15 intermediate relay normally open contact, FR2 fan thermal relay, KM5 AC contactor coil.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A control device, applied to a hydraulic flap machine, characterized in that: The hydraulic flap machine includes a lifting proportional valve, a reversing proportional valve, a first hydraulic rod and a second hydraulic rod. The lifting proportional valve is used to control the lifting rate of the first hydraulic rod and the second hydraulic rod. The reversing proportional valve is used to control the height difference between the first hydraulic rod and the second hydraulic rod. The control device includes: Main controller; a first controller, wherein an input end of the first controller is electrically connected to the main controller, an output end of the first controller is electrically connected to an input end of the lifting proportional valve, and the first controller is used to control the operation of the lifting proportional valve according to a first control signal output by the main controller; A second controller, the input end of the second controller is electrically connected to the main controller, the output end of the second controller is electrically connected to the input end of the reversing proportional valve, and the second controller is used to control the operation of the reversing proportional valve according to a second control signal output by the main controller.

2. The control device according to claim 1, characterized in that The control device also includes a temperature detection device, which is arranged in a hydraulic oil tank that supplies oil to the first hydraulic rod and the second hydraulic rod. The output end of the temperature detection device is electrically connected to the input end of the main controller. The temperature detection device is used to detect the temperature in the hydraulic oil tank and output a temperature detection signal.

3. The control device according to claim 2, characterized in that The control device further comprises a temperature regulating device, an input end of which is electrically connected to the main controller, and the temperature regulating device is used to control the temperature of the first hydraulic rod and the second hydraulic rod according to a temperature regulating signal output by the main controller.

4. The control device according to claim 3, characterized in that: The temperature regulating device comprises a heating device, an input end of which is electrically connected to the main controller, and the heating device is used to control the temperature increase of the first hydraulic rod and the second hydraulic rod according to the heating signal output by the main controller.

5. The control device according to claim 3, characterized in that: The temperature regulating device comprises a cooling device, an input end of which is electrically connected to the main controller, and the cooling device is used to control the temperature reduction of the first hydraulic rod and the second hydraulic rod according to a cooling signal output by the main controller.

6. The control device according to claim 1, characterized in that: The control device further includes a voltage conversion device, and the voltage conversion device includes: A first voltage conversion circuit, wherein an input end of the first voltage conversion circuit is electrically connected to the voltage input end, and the first voltage conversion circuit is used for converting the input alternating current into a first voltage for output; The second voltage conversion circuit has an input terminal electrically connected to the voltage input terminal, and the second voltage conversion circuit is used for converting the input alternating current into a second voltage for output.

7. The control device according to any one of claims 1 to 6, characterized in that: The control device also includes a plurality of switch circuits, the input ends of the plurality of switch circuits are electrically connected to the voltage input end, and the output ends are electrically connected to each device module respectively, for opening or closing the path between the voltage input end and each device module.

8. A hydraulic panel turning machine, characterized in that: The hydraulic flap machine comprises a control device as described in any one of claims 1-7.

9. The hydraulic panel turning machine according to claim 8, characterized in that: The hydraulic panel flipper comprises an operation panel, an output end of the operation panel is electrically connected to the main controller, and the operation panel is used to input a control signal.

10. The hydraulic panel turning machine according to claim 8, characterized in that: The hydraulic flap machine includes two groups of control devices and a conversion switch, wherein the conversion switch is used to connect the path between one group of control devices and the voltage input terminal, and disconnect the path between the other group of control devices and the voltage input terminal.

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