Control system of heading machine

Abstract

The utility model provides a heading machine control system, which comprises a power supply device, a protection device, a programmable logic controller and a control loop, the power supply voltage of the power supply device is greater than a preset voltage threshold value, and the protection device comprises an isolation switch protection device. The power-on protection module is used for power-on protection of a heading machine control system The power supply device is connected with the isolating switch protection device and is used for supplying power to the heading machine control system; the isolation switch protection device and the control loop are connected with the programmable logic controller. The heading machine control system is based on the programmable logic controller, the protection device and the control loop, and the safety of the heading machine control system is effectively improved under the condition that the power supply voltage of the power supply device is larger than the preset voltage threshold value, namely under the condition that the power supply voltage is high.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a tunnel boring machine control system. Background Art

[0002] With the development of high-power tunnel boring machine models, it is increasingly important to develop tunnel boring machine control systems suitable for higher power supply voltages.

[0003] The existing tunnel boring machine control system safely controls the tunnel boring machine's power supply circuit through circuit breakers and contactors, but the system has certain limitations. When the power supply voltage is high, safety problems are prone to occur, resulting in low safety of the tunnel boring machine control system. Utility Model Content

[0004] The utility model provides a tunnel boring machine control system to solve the problem that the existing tunnel boring machine control system has certain limitations and is prone to safety problems when the power supply voltage is high, resulting in the defect that the safety of the tunnel boring machine control system is low. Based on a programmable logic controller, a protection device and a control circuit, when the power supply voltage of the power supply device is greater than a preset voltage threshold, that is, when the power supply voltage is high, the safety of the tunnel boring machine control system is effectively improved.

[0005] The utility model provides a roadheader control system, comprising: a power supply device, a protection device, a programmable logic controller and a control circuit, wherein the power supply voltage of the power supply device is greater than a preset voltage threshold, the protection device comprises an isolating switch protection device, and the isolating switch protection device is used to perform power-on protection on the roadheader control system;

[0006] The power supply device is connected to the isolating switch protection device and is used to supply power to the tunnel boring machine control system;

[0007] The isolating switch protection device and the control loop are both connected to the programmable logic controller.

[0008] According to a tunnel boring machine control system provided by the utility model, the protection device also includes: a motor leakage measurement protection device, which is connected to the programmable logic controller and is used to perform leakage detection on the control loop before the motor is started.

[0009] According to a tunnel boring machine control system provided by the utility model, it also includes a detection device, which includes: a current detection device, a voltage detection device and a motor temperature detection device; the programmable logic controller is connected to the current detection device, the voltage detection device and the motor temperature detection device; the current detection device, the voltage detection device and the motor temperature detection device are all connected to the control circuit.

[0010] According to a roadheader control system provided by the utility model, the control loop includes at least one control circuit, and the at least one control circuit is connected to the programmable logic controller.

[0011] According to a tunnel boring machine control system provided by the utility model, each control circuit includes: low-voltage control components, high-voltage control components, a working motor, and a reduction mechanism and a transmission device; for each control circuit, the programmable logic controller is connected to the low-voltage control components, the low-voltage control components are connected to the high-voltage control components, the high-voltage control components and the reduction mechanism and the transmission device are all connected to the working motor; the working motor is connected to the current detection device, the voltage detection device and the motor temperature detection device.

[0012] According to a tunnel boring machine control system provided by the utility model, when there are multiple control circuits, the working motors of the multiple control circuits are connected, and the working motor of any outer control circuit is connected to the current detection device, the voltage detection device and the motor temperature detection device.

[0013] According to a tunnel boring machine control system provided by the utility model, the detection device also includes: a hydraulic oil level measuring device, a hydraulic temperature measuring device and a measuring sensor; the hydraulic oil level measuring device, the hydraulic temperature measuring device and the measuring sensor are all connected to the programmable logic controller.

[0014] A tunnel boring machine control system provided by the utility model also includes an operation display screen and / or a remote control device; the operation display screen and / or the remote control device are connected to the programmable logic controller and are used to respond to the motor start operation input by the user.

[0015] According to a roadheader control system provided by the utility model, the operation display screen and / or the remote control device is provided with an early warning device; the early warning device is used to send out an alarm signal when a failure occurs in the roadheader control system.

[0016] The tunnel boring machine control system provided by the utility model includes a power supply device, a protection device, a programmable logic controller and a control circuit. The power supply voltage of the power supply device is greater than a preset voltage threshold. The protection device includes an isolating switch protection device, and the isolating switch protection device is used to perform power-on protection on the tunnel boring machine control system. The power supply device is connected to the isolating switch protection device to supply power to the tunnel boring machine control system. The isolating switch protection device and the control circuit are both connected to the programmable logic controller. The tunnel boring machine control system is based on the programmable logic controller, the protection device and the control circuit. When the power supply voltage of the power supply device is greater than the preset voltage threshold, that is, when the power supply voltage is high, the safety of the tunnel boring machine control system is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is one of the structural schematic diagrams of the tunnel boring machine control system provided by the utility model;

[0019] Figure 2 It is a structural schematic diagram of the protection device provided by the utility model;

[0020] Figure 3 This is the second structural schematic diagram of the tunnel boring machine control system provided by the utility model;

[0021] Figure 4 This is one of the structural diagrams of the control loop provided by the utility model;

[0022] Figure 5 This is the second structural diagram of the control loop provided by the utility model;

[0023] Figure 6 This is the third structural diagram of the control circuit provided by the utility model;

[0024] Figure 7 It is a structural schematic diagram of the detection device provided by the utility model;

[0025] Figure 8 This is the third structural schematic diagram of the tunnel boring machine control system provided by the utility model;

[0026] Figure 9a It is a structural schematic diagram of the operation display screen provided by the utility model;

[0027] Figure 9b It is a structural schematic diagram of the remote control device provided by the utility model;

[0028] Fig.10 This is the fourth structural schematic diagram of the tunnel boring machine control system provided by the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0030] The following is a further description of the embodiments of the present utility model.

[0031] like Figure 1 The figure is one of the structural schematic diagrams of the tunnel boring machine control system provided by the utility model. The tunnel boring machine control system includes: a power supply device 101, a protection device 102, a programmable logic controller (PLC) 103 and a control circuit 104. The power supply voltage of the power supply device 101 is greater than a preset voltage threshold. The protection device 102 includes an isolating switch protection device 1021. The isolating switch protection device 1021 is used to perform power-on protection on the tunnel boring machine control system.

[0032] The power supply device 101 is connected to the isolating switch protection device 1021 and is used to supply power to the tunnel boring machine control system;

[0033] The isolating switch protection device 1021 and the control circuit 104 are both connected to the programmable logic controller 103 .

[0034] The programmable logic controller 103 is the main control unit of the tunnel boring machine control system, which is used to receive and process relevant signals (such as electrical signals and / or detection signals, etc.), and send control signals. Optionally, the control signal may include a start signal and / or a stop signal, wherein the start signal is used to instruct the control loop 104 to start, and the stop signal is used to instruct the working motor in the control loop 104 to stop working.

[0035] The isolating switch protection device 1021 refers to a mechanical limit device. The isolating switch protection device 1021 can feed back the power-on signal to the preceding stage feed switch, and form protection with the power supply device 101, thereby ensuring that the isolating switch can be operated under the premise of the preceding stage power failure, forming a mechanical and electrical interlock, which can effectively avoid misoperation.

[0036] The control circuit 104 is used to isolate and control the strong current and weak current of the working motor.

[0037] It should be noted that the preset voltage threshold is AC1140V. Among them, AC (Alternating Current) refers to alternating current. Usually, industrial power supply voltage has a fixed voltage level, for example, AC220V, AC380V, AC660V, AC1140V and AC3300V. The power supply voltage of the power supply device 101 is greater than the preset voltage threshold (AC1140V), that is, the embodiment of the utility model mainly relates to a power supply voltage of AC3300V.

[0038] The current power supply voltage of the tunnel boring machine control system is generally AC1140V or AC660V. The current development trend of tunnel boring machines is to increase the power of tunnel boring machines to improve the working efficiency of tunnel boring machines. Taking the power supply voltage AC1140V as an example, if AC1140V is continued to be used for power supply, in order to increase the power of the tunnel boring machine, the power supply current will become larger and larger, the cable will become thicker, and the line loss of long-distance power supply will increase, resulting in lower working efficiency of the tunnel boring machine.

[0039] Optionally, the tunnel boring machine control system is suitable for AC3300V high-voltage power supply. Electrical components that meet the 3300V voltage level can be selected and arranged reasonably, and baffles and prompts can be designed in obvious positions; select appropriate cable sizes that can carry the power supply current, and design a reasonable outer box shape and interface for the tunnel boring machine control system.

[0040] It can be understood that the tunnel boring machine control system is suitable for AC3300V high-voltage power supply. Because the power supply voltage is increased, the power supply current and cable size can be reduced, and the line loss can be reduced to improve the working efficiency of the tunnel boring machine.

[0041] In the embodiment of the utility model, when the power supply voltage of the power supply device 101 is greater than the preset voltage threshold, it means that the power supply voltage is relatively high, which is prone to safety problems. Based on this, the programmable logic controller 103 controls the entire tunnel boring machine control system; the isolating switch protection device 1021 performs power-on protection on the tunnel boring machine control system, and forms protection with the power supply device 101, thereby ensuring that the isolating switch is operated under the premise of power failure at the previous stage, forming a mechanical and electrical interlock, which can effectively avoid misoperation; the control circuit 104 performs isolation control of strong and weak electricity on the working motor. In the whole process, when the power supply voltage is relatively high, the safety of the tunnel boring machine control system is effectively improved.

[0042] In some embodiments, Figure 2The protection device 102 also includes a motor leakage measurement protection device 1022, which is connected to the programmable logic controller 103 and is used to perform leakage detection on the control loop 104 before the motor starts.

[0043] The leakage detection before the motor starts refers to detecting whether the control circuit 104 meets the power-on requirements of the working motor before the working motor is powered on, that is, detecting whether the control circuit 104 has a leakage risk.

[0044] Exemplarily, the motor leakage measurement and protection device 1022 detects whether there is a leakage hazard in the control circuit 104: when the leakage voltage value detected by the motor leakage measurement and protection device 1022 does not meet the preset threshold value, it means that there is a leakage hazard in the control circuit 104 at this time, that is, it does not meet the power-on requirements of the working motor and cannot supply power to the working motor; when the leakage voltage value detected by the motor leakage measurement and protection device 1022 meets the preset threshold value, it means that there is no leakage hazard in the control circuit 104 at this time, that is, it meets the power-on requirements of the working motor, and the motor leakage measurement and protection device 1022 feeds back the electrical signal to the programmable logic controller 103, and the programmable logic controller 103 sends a start signal to the control circuit 104, and the control circuit 104 isolates and controls the strong and weak currents of the working motor, thereby supplying power to the working motor and driving the deceleration mechanism and the transmission device to work.

[0045] Optionally, the preset threshold may be set before the motor leakage measurement and protection device 1022 leaves the factory, or may be set by a user according to the power-on voltage level of an electrical component that the motor leakage measurement and protection device 1022 needs to detect.

[0046] In the embodiment of the utility model, during the operation of the motor leakage measurement and protection device 1022, the motor leakage measurement and protection device 1022 detects whether the control circuit 104 meets the power-on requirements of the working motor, and realizes power supply control of the working motor to improve the safety of the tunnel boring machine control system.

[0047] In some embodiments, Figure 3 The figure is the second structural diagram of the tunnel boring machine control system provided by the utility model. The tunnel boring machine control system also includes a detection device 105, and the detection device 105 includes: a current detection device 1051, a voltage detection device 1052 and a motor temperature detection device 1053;

[0048] The programmable logic controller 103 is connected to the current detection device 1051, the voltage detection device 1052 and the motor temperature detection device 1053;

[0049] The current detection device 1051 , the voltage detection device 1052 and the motor temperature detection device 1053 are all connected to the control loop 104 .

[0050] In the embodiment of the utility model, the current detection device 1051 , the voltage detection device 1052 and the motor temperature detection device 1053 perform real-time detection on the control loop 104 to implement damage risk diagnosis on the control loop 104 .

[0051] In some embodiments, Figure 4 The control circuit 104 includes at least one control circuit 1041 , and at least one control circuit 1041 is connected to the programmable logic controller 103 .

[0052] In an embodiment of the utility model, at least one control circuit 1041 waits for the programmable logic controller 103 to send a start signal. When the programmable logic controller 103 sends a start signal to the control circuit 104, at least one control circuit 1041 performs isolation control of high current and low current on the working motor to achieve safe power supply for the working motor.

[0053] In some embodiments, Figure 5 As shown, it is the second structural schematic diagram of the control loop provided by the utility model. Each control circuit 1041 includes: a low-voltage control component 10411, a high-voltage control component 10412, a working motor 10413, and a speed reduction mechanism and a transmission device 10414; for each control circuit 1041, the programmable logic controller 103 is connected to the low-voltage control component 10411, the low-voltage control component 10411 is connected to the high-voltage control component 10412, the high-voltage control component 10412 and the speed reduction mechanism and the transmission device 10414 are all connected to the working motor 10413; the working motor 10413 is connected to the current detection device 1051, the voltage detection device 1052 and the motor temperature detection device 1053.

[0054] Among them, the low-voltage control component 10411 and the high-voltage control component 10412 are used to isolate and control the strong current and weak current of the working motor 10413.

[0055] Exemplarily, the current detection device 1051 detects the current value of the working motor 10413 in real time, and sends the detection signal carrying the current value to the programmable logic controller 103 in real time; at the same time, the voltage detection device 1052 detects the voltage value of the working motor 10413 in real time, and sends the detection signal carrying the voltage value to the programmable logic controller 103 in real time; at the same time, the motor temperature detection device 1053 detects the temperature value of the working motor 10413 in real time, and sends the detection signal carrying the temperature value to the programmable logic controller 103 in real time. Based on this, when at least one of the current value is greater than or equal to the preset risk current threshold, the voltage value is greater than or equal to the preset risk voltage threshold, and the temperature value is greater than or equal to the preset risk temperature threshold is satisfied, the programmable logic controller 103 determines that the control circuit 104 is at risk of damage at this time, that is, the working motor 10413 is not running in the safe range, and the programmable logic controller 103 sends a stop signal to the control circuit 104 to stop the working motor 10413.

[0056] When the current value is less than the preset risk current threshold, the voltage value is less than the preset risk voltage threshold, and the temperature value is less than the preset risk temperature threshold, the programmable logic controller 103 determines that there is no risk of damage to the control loop 104 at this time, that is, the working motor 10413 operates in a safe range.

[0057] Optionally, the above-mentioned preset risk current threshold, preset risk voltage threshold and preset risk temperature threshold may be set by the programmable logic controller 103 before leaving the factory, or may be user-defined, which is not specifically limited here.

[0058] In the embodiment of the utility model, for each control circuit 1041, the low-voltage control component 10411, the high-voltage control component 10412, the working motor 10413 and the reduction mechanism and the transmission device 10414 are connected in series, and the programmable logic controller 103 is connected to the low-voltage control component 10411, and the working motor 10413 is connected to the current detection device 1051, the voltage detection device 1052 and the motor temperature detection device 1053. That is to say, through the above-mentioned connection relationship, while ensuring a safe electrical interval, the working motor 10413 can be effectively isolated and controlled from strong and weak electricity, and the working motor 10413 can be monitored in real time by various detection devices to ensure the safe operation of the working motor 10413.

[0059] In some embodiments, when there are multiple control circuits 1041 , the working motors of the multiple control circuits are connected, and the working motor of any outer control circuit is connected to the current detection device 1051 , the voltage detection device 1052 and the motor temperature detection device 1053 .

[0060] For example, Figure 6 As shown, it is the third structural schematic diagram of the control circuit provided by the utility model. When the number of control circuits 1041 is 5, these 5 control circuits can be respectively represented as: control circuit 1041a, control circuit 1041b, control circuit 1041c, control circuit 1041d and control circuit 1041e. Control circuit 1041a includes: low-voltage control components 10411a, high-voltage control components 10412a, working motor 10413a, and, speed reduction mechanism and transmission device 10414a; control circuit 1041b includes: low-voltage control components 10411b, high-voltage control components 10412b, working motor 10413b, and, speed reduction mechanism and transmission device 10414b; control circuit 1041c includes: low-voltage control components 10411c, high-voltage control components 1 0412c, working motor 10413c, and, speed reduction mechanism and transmission device 10414c; the control circuit 1041d includes: low-voltage control components 10411d, high-voltage control components 10412d, working motor 10413d, and, speed reduction mechanism and transmission device 10414d; the control circuit 1041e includes: low-voltage control components 10411e, high-voltage control components 10412e, working motor 10413e, and, speed reduction mechanism and transmission device 10414e.

[0061] Working motor 10413a, working motor 10413b, working motor 10413c, working motor 10413d and working motor 10413e are connected, and any working motor of the outer control circuit, i.e. working motor 10413a or working motor 10413e, Figure 6 Taking the working motor 10413e as an example, the working motor 10413e is connected to the current detection device 1051, the voltage detection device 1052 and the motor temperature detection device 1053.

[0062] In the embodiment of the utility model, when there are multiple control lines, through the above-mentioned connection relationship, real-time safety monitoring of multiple working motors is performed through various detection devices to ensure the safe operation of the working motor 10413.

[0063] In some embodiments, Figure 7 , which is a schematic diagram of the structure of the detection device provided by the utility model. The detection device 105 also includes: a hydraulic oil level measuring device 1054, a hydraulic temperature measuring device 1055 and a measuring sensor 1056; the hydraulic oil level measuring device 1054, the hydraulic temperature measuring device 1055 and the measuring sensor 1056 are all connected to the programmable logic controller 103.

[0064] Optionally, the measurement sensor 1056 may include at least one of the following: a hydraulic pressure sensor, a hydraulic flow sensor, a hydraulic vibration sensor, etc.

[0065] In the embodiment of the utility model, the tunnel boring machine control system is also equipped with a hydraulic oil level measuring device 1054, a hydraulic temperature measuring device 1055 and a measuring sensor 1056, which can perform real-time safety monitoring of the mechanical hydraulic device equipped with the tunnel boring machine, thereby realizing all-round monitoring and protection of the tunnel boring machine.

[0066] In some embodiments, the tunnel boring machine control system further includes an operation display screen 106 and / or a remote control device 107; the operation display screen 106 and / or the remote control device 107 are connected to the programmable logic controller 103 and are used to respond to the motor start operation input by the user.

[0067] For example, when the tunnel boring machine control system includes an operation display screen 106 and a remote control device 107, Figure 8 The figure shows the third structural diagram of the tunnel boring machine control system provided by the utility model.

[0068] Specifically, after the isolating switch protection device 1021 performs power-on protection on the tunnel boring machine control system, the tunnel boring machine control system starts to operate, and the operation display screen 106 and / or the remote control device 107 can be powered on to work; the user inputs a motor start operation to the operation display screen 106 and / or the remote control device 107, for example, the user presses the corresponding operation button for motor start on the operation display screen 106 and / or the remote control device 107; then, the operation display screen 106 and / or the remote control device 107 will respond to the motor start operation input by the user, and the motor leakage measurement protection device 107 will start the motor start operation. When the leakage voltage value detected by the protection device 1022 meets the preset threshold value, it means that there is no leakage hazard in the control circuit 104 at this time, that is, it meets the power-on requirement of the working motor. The motor leakage measurement protection device 1022 feeds back the electrical signal to the programmable logic controller 103, and the programmable logic controller 103 sends a start signal to the control circuit 104. The control circuit 104 isolates and controls the strong and weak currents of the working motor 10413, thereby supplying power to the working motor 10413 and driving the deceleration mechanism and the transmission device 10414 to work.

[0069] In the embodiment of the utility model, the operation display screen 106 and / or the remote control device 107 can respond to the motor start operation input by the user to achieve human-computer interaction.

[0070] In some embodiments, the operation display screen 106 and / or the remote control device 107 is provided with an early warning device; the early warning device is used to send out an alarm signal in the event of a failure in the tunnel boring machine control system.

[0071] Optionally, the above-mentioned failure may include: the control circuit 104 does not meet the power-on requirement of the working motor, and / or the working motor 10413 does not operate in a safe range.

[0072] For example, when the tunnel boring machine control system includes an operation display screen 106 and a remote control device 107, the operation display screen 106 is provided with an early warning device 1061, and the remote control device 107 is provided with an early warning device 1071. Figure 9a As shown in FIG. 1 , it is a schematic diagram of the structure of the operation display screen provided by the utility model. Figure 9b FIG. 1 is a schematic diagram of the structure of the remote control device provided by the utility model.

[0073] In an embodiment of the utility model, in the event of a failure in the tunnel boring machine control system, the early warning device 1061 and / or the early warning device 1071 will send out an alarm signal to remind the user to promptly perform maintenance and safety inspections on related equipment of the tunnel boring machine control system to avoid further damage to the related equipment.

[0074] The embodiments of the present invention are further described with reference to the following examples:

[0075] For example, Fig.10 The figure shows the fourth structural diagram of the tunnel boring machine control system provided by the utility model. Fig.10 In the control circuit 1041, the number of control circuits is 5. All electrical components that meet the voltage level of 3300V are arranged reasonably to ensure safe electrical spacing. Weak current and strong current isolation are arranged to achieve safe power supply for the working motor. At the same time, the isolating switch protection device 1021 can feed back the power-on signal to the front-stage feeder switch, forming protection with the power supply device 101, which can ensure that the isolating switch is operated under the premise of power failure at the front stage, forming mechanical and electrical interlocking, and effectively avoiding misoperation. When the power supply voltage of the power supply device is greater than the preset voltage threshold, that is, when the power supply voltage is high, the safety of the tunnel boring machine control system is effectively improved.

[0076] Exemplarily, the control logic of the tunnel boring machine control system provided by the utility model is as follows:

[0077] Step 1: Open the mechanical interlock;

[0078] Step 2: The tunnel boring machine control system is powered on, and a power-on signal is fed back to the front-stage power feed switch;

[0079] Step 3, the control circuit 104 is powered on and operated, and the circuit where the detection device 105 is located is powered on and operated;

[0080] Step 4, perform leakage detection before starting the motor to detect whether the control circuit 104 meets the power-on requirements of the working motor: if it does not meet the power-on requirements of the working motor, execute step 5; if it meets the power-on requirements of the working motor, execute step 6;

[0081] Step 5, the early warning device 1061 and / or the early warning device 1071 sends out an alarm signal to remind the user to promptly perform maintenance and safety inspection on the relevant equipment of the tunnel boring machine control system, and then respond to the motor start operation input by the user, and then execute step 4;

[0082] Step 6: Start the relevant equipment of the roadheader control system, and power on the circuit where the working motor 10413 is located;

[0083] Step 7, determine whether the working motor 10413 is running in the safe range: when the working motor 10413 is running in the safe range, the relevant equipment of the tunnel boring machine control system operates normally; when the working motor 10413 is not running in the safe range, the programmable logic controller 103 sends a stop signal to the control loop 104 to stop the working motor 10413, and at the same time, execute step 5.

[0084] In the above control process, the safety of the tunnel boring machine control system is effectively improved.

[0085] Exemplarily, the power-off control logic of the tunnel boring machine control system provided by the present invention is as follows:

[0086] Step 1, the device stops operating in response to user input;

[0087] Step 2, the circuit where the working motor 10413 is located is powered off;

[0088] Step 3, mechanical interlocking opens;

[0089] Step 4: Power off the relevant equipment of the tunnel boring machine control system;

[0090] Step 5: Feedback the power-off signal to the front-stage power feed switch.

[0091] The above power-off control process can cut off the power in time, ensuring that the tunnel boring machine control system can operate normally afterwards.

[0092] The system embodiment described above is merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0093] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A roadheader control system, It is characterized in that include: A power supply device, a protection device, a programmable logic controller and a control circuit, wherein the power supply voltage of the power supply device is greater than a preset voltage threshold, and the protection device includes an isolating switch protection device, and the isolating switch protection device is used to perform power-on protection on the tunnel boring machine control system; The power supply device is connected to the isolating switch protection device and is used to supply power to the tunnel boring machine control system; The isolating switch protection device and the control loop are both connected to the programmable logic controller.

2. The tunnel boring machine control system according to claim 1, It is characterized in that The protection device further comprises: a motor leakage measurement protection device, which is connected to the programmable logic controller and is used for performing leakage detection on the control loop before the motor is started.

3. The tunnel boring machine control system according to claim 1, It is characterized in that It also includes a detection device, which includes: a current detection device, a voltage detection device and a motor temperature detection device; The programmable logic controller is connected to the current detection device, the voltage detection device and the motor temperature detection device; The current detection device, the voltage detection device and the motor temperature detection device are all connected to the control circuit.

4. The tunnel boring machine control system according to claim 3, It is characterized in that The control loop includes at least one control line, and the at least one control line is connected to the programmable logic controller.

5. The tunnel boring machine control system according to claim 4, It is characterized in that Each control circuit includes: low-voltage control components, high-voltage control components, working motors, and speed reduction mechanisms and transmission devices; For each control circuit, the programmable logic controller is connected to the low-voltage control component, the low-voltage control component is connected to the high-voltage control component, and the high-voltage control component, the speed reduction mechanism and the transmission device are all connected to the working motor; The working motor is connected to the current detection device, the voltage detection device and the motor temperature detection device.

6. The tunnel boring machine control system according to claim 4 or 5, It is characterized in that In the case where there are multiple control circuits, the working motors of the multiple control circuits are connected, and the working motor of any outer control circuit is connected to the current detection device, the voltage detection device and the motor temperature detection device.

7. The roadheader control system according to any one of claims 3 to 5, It is characterized in that The detection device also includes: a hydraulic oil level measuring device, a hydraulic temperature measuring device and a measuring sensor; The hydraulic oil level measuring device, the hydraulic temperature measuring device and the measuring sensor are all connected to the programmable logic controller.

8. The tunnel boring machine control system according to claim 4 or 5, It is characterized in that Also includes operating display screen and / or remote control device; The operation display screen and / or the remote control device are connected to the programmable logic controller and are used to respond to the motor starting operation input by the user.

9. The tunnel boring machine control system according to claim 8, It is characterized in that The operation display screen and / or the remote control device is provided with an early warning device; The early warning device is used to send out an alarm signal when a failure occurs in the tunnel boring machine control system.

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