CN210954715U - Dumper digital quantity state display device and dumper - Google Patents
Dumper digital quantity state display device and dumper Download PDFInfo
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- CN210954715U CN210954715U CN201922153470.2U CN201922153470U CN210954715U CN 210954715 U CN210954715 U CN 210954715U CN 201922153470 U CN201922153470 U CN 201922153470U CN 210954715 U CN210954715 U CN 210954715U
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Abstract
The utility model provides a tipper digit quantity state display device and tipper, the device includes: the acquisition unit is used for acquiring a digital quantity state signal of the dump truck; the signal conversion unit is used for performing voltage conversion on the digital quantity state signal and outputting the converted digital quantity state signal; the processing unit is used for processing the converted digital quantity state signal and outputting a corresponding indicator lamp state signal; and the display unit receives the indicator lamp state signals and displays the indicator lamp state signals through the indicator lamps so as to represent the digital quantity state of the corresponding dump truck. The utility model discloses can show the digital quantity state of tipper in real time through the pilot lamp to make things convenient for the maintenance operation personnel to look over at any time and monitor each digital quantity state, like the action state of each contactor, improved travelling comfort and security among the maintenance operation personnel operation process, in addition, the maintenance operation personnel need not to carry the circuit drawing, and relevant circuit has shown in the display element, thereby provides very big facility for the maintenance operation personnel.
Description
Technical Field
The utility model relates to an electric power wheel tipper electrical apparatus troubleshooting technical field, in particular to tipper digital quantity state display device and tipper.
Background
The electric wheel dumper has the characteristics of large transportation tonnage, high production efficiency, lower maintenance cost and the like. However, due to poor production operation environmental conditions, the vehicle jolts and vibrates during mining operation, an electrical system is affected by dust and moisture, and the faults of the vehicle such as traction interruption, non-electric braking, power failure and the like sometimes occur due to the problems of the accessories.
When a repair person handles the fault, the repair person often needs to open the electric cabinet, stand on a deck to firmly hold the repair person, then let a driver operate the vehicle, make the vehicle put into a traction or electric braking state, and simultaneously observe whether the action condition of each contactor is abnormal, so as to determine whether the fault cause is caused by the contactor. Of course, most contactor faults can be detected when the vehicle is not running, but there are also "soft" faults that need to be detected during the vehicle running. Such a fault checking method has been used for a long time, and no matter the outside is cold and hot, and whether the weather is blown by wind or rain, no matter in daytime or at night, the vehicle model is used so far, and only the repairing personnel can do so. However, the current coal mine safety situation is severe, and the method of a repair worker standing on a deck for trial run has personal safety hidden trouble. Once the electric appliance cabinet is damaged by the cabinet door of the electric appliance cabinet, people are also burnt by the electric arc of the contactor when observing the action of the contactor.
Namely, the existing electric appliance fault detection mode of the dump truck mainly comprises the steps that an operator carries out fault detection on a deck, the operation environment is severe, potential safety hazards exist, and the safety is not high.
The related terms referred to above are explained as follows:
electric wheel dumper: an off-highway dump truck for large-scale strip mines or large-scale hydraulic engineering.
Controlling a contactor: the traction state or the electric braking state is arranged in an electric appliance cabinet on a deck platform of the vehicle, and the corresponding contactor acts to control and connect the corresponding main circuit.
And (3) breaking the traction fault: the running of the dumper is controlled by an electric system, and when the dumper cannot be pulled forwards or backwards due to electric reasons, the dumper is called to be disconnected.
Failure of electroless braking: the electric braking deceleration of the dump truck is controlled by an electric system, and when the vehicle cannot be braked and decelerated due to electric reasons, the electric braking is called as electroless braking.
Power failure: the dump truck can automatically control constant power output in a traction state, and when the electrical lines or contacts of the dump truck have faults or excitation given faults, feedback systems and the like, the dump truck can cause the power to suddenly drop or intermittently output.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of above-mentioned technical problem at least.
Therefore, an object of the utility model is to provide a tipper digit volume state display device, this tipper digit volume state display device can show the digit volume state of tipper in real time through the pilot lamp to each digit volume state is looked over and is monitored at any time to convenient maintenance operation personnel, like the action state of each contactor, has improved the travelling comfort and the security of maintenance operation personnel operation in-process.
Therefore, a second object of the present invention is to provide a dump truck, which can repair the electrical fault of the dump truck, and can directly determine the electrical fault range through the digital value status display of the display unit and the circuit diagram on the display unit.
In order to achieve the above object, the utility model discloses a first aspect provides a tipper digital quantity state display device, include: the acquisition unit is used for acquiring a digital quantity state signal of the dump truck; the signal conversion unit is connected with the acquisition unit, performs voltage conversion on the digital quantity state signal and outputs the converted digital quantity state signal; the processing unit is connected with the signal conversion unit, processes the converted digital quantity state signal and outputs a corresponding indicator light state signal; and the display unit is connected with the processing unit and used for receiving the indicator lamp state signals and displaying the indicator lamp state signals through the indicator lamps so as to represent the digital quantity state of the corresponding dumper.
According to the digital quantity state display device of the dumper, the acquisition unit acquires the digital quantity state signal of the dumper, the signal conversion unit carries out voltage conversion on the digital quantity state signal, and outputs the converted digital quantity state signal, the processing unit processes the converted digital quantity state signal and outputs a corresponding indicator light state signal, the display unit displays the indicator light state signal through the indicator light to represent the digital quantity state of the corresponding dumper, the digital quantity state of the dumper can be displayed in real time through the indicating lamp, so that the overhaul operators can conveniently check and monitor the digital quantity state at any time, such as the action state of each contactor, improves the comfort and the safety of the overhaul operators in the operation process, in addition, the maintenance operator does not need to carry a circuit drawing, and related circuits are displayed in the display unit, so that great convenience is provided for the maintenance operator.
In addition, according to the utility model discloses foretell tipper digit quantity state display device can also have following additional technical characterstic:
in some examples, the signal conversion unit includes a voltage conversion circuit board for converting a high voltage of the digital quantity status signal into a low voltage.
In some examples, the voltage conversion circuit board includes a plurality of 4-way optically isolated integrated circuits and one 2-way optically isolated integrated circuit.
In some examples, the display unit includes a touch display screen in which a circuit diagram including the indicator light is displayed.
In some examples, the digital quantity status signals include a contactor pull-in status signal, a traction master control signal, an electric brake master control signal, a direction control master signal, an inverter position signal, a contactor action drive output signal.
In some examples, the signal conversion unit converts the contactor pull-in state signal, the traction master control signal, the electric brake master control signal, the direction control master signal and the reverser position signal from a high level of 24 volts to the ground connection of the signal input terminal of the processing unit.
In some examples, the signal conversion unit comprises a 24-volt relay, the 24-volt relay receives the contactor pull-in state signal, the traction main command control signal, the electric brake main command control signal, the direction control main command signal and the reverser position signal, and a normally open contact of the 24-volt relay controls the connection with the vehicle body ground.
In some examples, the signal conversion unit converts the contactor action drive output signal from a 12 volt high level to a ground turn-on of the signal input terminal of the processing unit.
In some examples, the signal conversion unit comprises a 12-volt relay, the 12-volt relay receives the contactor action driving output signal, and a normally open contact of the 12-volt relay is controlled to be connected with the ground of the vehicle body.
In order to achieve the above object, the second aspect of the present invention provides a dump truck, comprising the above-mentioned dumper digital value state display device.
According to the utility model discloses a tipper can show the digital quantity state of tipper in real time through the pilot lamp to each digital quantity state is looked over and is monitored at any time to convenient maintenance operation personnel, like the action state of each contactor, has improved travelling comfort and the security of maintenance operation personnel operation in-process, and in addition, maintenance operation personnel need not to carry the circuit drawing, and relevant circuit has shown in the display element, thereby provides very big facility for maintenance operation personnel.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of a digital quantity status display device of a dump truck according to an embodiment of the invention;
fig. 2 is an exemplary diagram of a display interface of a display unit according to an embodiment of the present invention;
fig. 3 is an exemplary diagram of a display interface of a display unit according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following describes the digital quantity state display device of the dump truck and the dump truck according to the embodiment of the invention with the attached drawings.
Fig. 1 is a block diagram of a digital quantity status display device of a dump truck according to an embodiment of the present invention. As shown in fig. 1, the digital quantity status display device 100 for a dump truck includes: an acquisition unit 110, a signal conversion unit 120, a processing unit 130, and a display unit 140.
Specifically, the obtaining unit 110 is configured to obtain a digital quantity status signal of the dump truck.
Specifically, the digital quantity status signal includes, for example, a contactor pull-in status signal, a traction master control signal, an electric brake master control signal, a direction control master signal, an inverter position signal, and a contactor action driving output signal. More specifically, the drive control signal of each contactor is led out from the wiring terminal row of the power driver, and the pull-in state signal of the contactor and the main command signal of traction and electric braking are led out from the input terminal of the microcomputer box.
The signal conversion unit 120 is connected to the obtaining unit 110, performs voltage conversion on the digital quantity status signal, and outputs the converted digital quantity status signal.
Specifically, the signal conversion unit 120 includes, for example, a voltage conversion circuit board for converting a high voltage of the digital quantity status signal into a low voltage for the processing unit 130 to recognize and receive.
In an embodiment of the present invention, the voltage conversion circuit board includes a plurality of 4-way optoelectronic isolation integrated circuits and a 2-way optoelectronic isolation integrated circuit. In a specific example, the voltage conversion circuit board employs 3 4-way optically isolated integrated circuits and one 2-way optically isolated integrated circuit. The operation state signals and the operation driving output signals of the contactors are connected to the processing unit 130 through the voltage conversion circuit board.
In a specific embodiment of the present invention, as shown in fig. 2 and fig. 3, the digital quantity status signal of the dump truck acquired by the acquiring unit 110 includes: an excitation contactor is attracted to a signal 355 line in place; a traction master control line 183 line; an electric brake master control line 351; a traction KMT1\ KMT2 contactor is attracted to a position signal 363 line; an electric brake KMB1\ KMB2 contactor pulls in a position signal 367 line; an electric brake KMB3\ KMB4 contactor pulls in a position signal 371 line; a reverse control master signal 373 line; inverter position signal 375 line; excitation contactor KMF coil drive signal 289; the traction contactor KMT1\ KMT2 coil drive signal 287; KMB1\ KMB2 coil drive signal 273; KMB3\ KMB4 coil drive signal 279; KGM coil drive signal 289; KWW coil drive signal 291.
It should be noted that the above signal extraction position is only used as a reference in this embodiment, and may be obtained from other positions, for example, not from a contact terminal near the microcomputer control box, or may be obtained from an auxiliary switch of the contactor.
In an embodiment of the present invention, the signal conversion unit 120 converts the contactor pull-in state signal, the traction master control signal, the electric brake master control signal, the direction control master control signal, and the inverter position signal from a 24 v high level to a ground connection of the signal input terminal of the processing unit 130. Specifically, the signal conversion unit 120 includes a 24 v relay, the 24 v relay receives a contactor pull-in state signal, a traction master control signal, an electric brake master control signal, a direction control master signal, and an inverter position signal, and a normally open contact of the 24 v relay controls to be connected to the vehicle body ground.
In another embodiment of the present invention, the signal conversion unit 120 converts the contactor operation driving output signal from 12 v high level to the ground connection of the signal input terminal of the processing unit 130. Specifically, the signal conversion unit 120 includes a 12-volt relay, the 12-volt relay receives the contactor digital quantity action driving output signal, and the normally open contact of the 12-volt relay is controlled to be connected to the vehicle body ground. In order to ensure that the 12V relay coil is not burnt out, a current limiting resistor or other electronic voltage reducing elements are required to be connected in series to the circuit.
The processing unit 130 is connected to the signal conversion unit 120, and processes the converted digital quantity status signal, and outputs a corresponding indicator light status signal, so that the digital quantity status is represented by the status of the indicator light.
The display unit 140 is connected to the processing unit 130, and is configured to receive the indicator light status signal and display the indicator light status signal through the indicator light, so as to indicate the digital quantity status of the corresponding dump truck. That is, the indicator light is controlled by the indicator light status signal to display the corresponding on-off status, so as to represent the digital quantity status corresponding to the corresponding digital quantity status signal, as shown in fig. 2 and 3, for example.
Specifically, the display unit 140 includes a touch display screen in which a circuit diagram including an indicator lamp is displayed. That is to say, a circuit diagram is displayed in the touch display screen of the display unit 140, and the circuit diagram has an indicator light, and the corresponding digital quantity state is represented by the on-off state of the indicator light, so that the operator can conveniently check and monitor the digital quantity state at any time, such as the action state of each contactor, and the comfort and the safety of the operator in the operation process are improved.
As a specific example, the processing unit 130 may adopt a PLC (Programmable Logic Controller) of mitsubishi FX2N-32MR model existing in a dump truck, which has an extension module FX2N-16XT, the display unit 140 adopts an existing GT1155 touch display screen of an original truck, and a signal conversion unit 120 including a voltage conversion circuit board is added. The obtaining unit 110 extracts the driving control signal of each contactor from the power driver terminal strip, and extracts the contactor pull-in state signal and the traction and electric brake master command signal from the input terminal of the microcomputer box. These signals are converted by the signal conversion unit 120 and input to mitsubishi FX2N-16XT modules, and are displayed visually on the display screen.
Specifically, the voltage conversion circuit board is a circuit board for converting high voltage into low voltage, and the circuit board adopts 3 4-channel optoelectronic isolation integrated circuits and one 2-channel optoelectronic isolation integrated circuit, such as a TLP521-2 type optoelectronic isolation integrated circuit. Through the voltage conversion circuit board, each contactor action state signal and action drive output signal access PLC extension module and handle, touch display screen increases the digital quantity state display page, shows relevant circuit drawing and pilot lamp status indication. In this embodiment, the PLC may add a related circuit diagram through display of the display screen, so that the maintenance personnel can view the circuit diagram at any time, for example, as shown in fig. 2 and 3.
In this embodiment, the digital status display device of the dump truck further comprises a power supply, which is a vehicle-mounted power supply and is used for supplying power to the digital status display device of the dump truck.
In summary, in the present embodiment, the digital quantity status display device of the dump truck relates to the vehicle power supply, the mitsubishi FX2N32MR PLC, the GT1155 display touch screen, the FX2N-16EX expansion module, the contactor pull-in status signal input, the traction master control input, the brake master control microcomputer input, the direction control master signal, the inverter position signal, the contactor action driving output signal, the low-voltage conversion circuit board, and the like. Specifically, a contactor pull-in state signal input, a traction master control input, an electric brake master control input, a direction control master signal, an inverter position signal and a contactor action driving output signal are connected, signal lines of all the signals are connected with a voltage conversion circuit board, and the voltage conversion circuit board is connected with an FX2N-16EX expansion module.
The voltage conversion circuit board inputs the pull-in state signal input and the master command signal of the contactor into high level 24V, and the signals are converted into the ground connection of the signal input terminal of the PLC expansion module. The realization method is not single, a 24-volt relay can be adopted, a coil of the 24-volt relay is connected with each control signal, and a normally open contact of the 24-volt relay is controlled to be connected with the ground of the vehicle body.
The voltage conversion circuit board converts the high level of the contactor action driving output signal into the ground connection of the signal input terminal of the PLC extension module by 12V. The realization method is not single, a 12-volt relay can be adopted, a coil of the relay is connected with each control signal, and a normally open contact of the relay is controlled to be connected with the ground of the vehicle body. In order to ensure that the 12V relay coil is not burnt out, a current limiting resistor or other electronic voltage reducing elements are required to be connected in series to the circuit.
Alternatively, the signal conversion circuit board may use a photocoupling circuit for signal conversion.
In this embodiment, the digital quantity status display device of the dump truck can be arranged in the cab, a repair person can sit on a passenger seat in the cab to monitor the action status of each contactor in the vehicle electrical cabinet at any time, and the microcomputer box can monitor whether the driving signal for controlling the contactor is normal or not in the state of inputting the control signal, so that the monitoring operation is simple and easy, and the repair person is comfortable and has no potential safety hazard during the inspection.
According to the digital quantity state display device of the dumper, the acquisition unit acquires a digital quantity state signal of the dumper, the signal conversion unit performs voltage conversion on the digital quantity state signal and outputs the converted digital quantity state signal, the processing unit processes the converted digital quantity state signal and outputs a corresponding indicator light state signal, the display unit displays the indicator light state signal through the indicator light to represent the digital quantity state of the corresponding dumper, namely, the digital quantity state of the dumper can be displayed in real time through the indicator light, so that maintenance operators can conveniently check and monitor the digital quantity states at any time, such as the action state of each contactor, the comfort and the safety of the maintenance operators in the operation process are improved, in addition, the maintenance operators do not need to carry circuit drawings, and related circuits are displayed in the display unit, thereby providing great convenience for maintenance operators.
The utility model discloses a further embodiment has still provided a tipper. This tipper includes the utility model discloses the tipper digital quantity state display device that any one above-mentioned embodiment described. Therefore, the utility model discloses the concrete implementation of tipper with the utility model discloses the tipper digital quantity state display device's of embodiment concrete implementation is similar, specifically please see the description of device part, for reducing redundancy, no longer gives details here.
According to the utility model discloses the tipper can show the digital quantity state of tipper in real time through the pilot lamp to make things convenient for the operation personnel to look over at any time and monitor each digital quantity state, like the action state of each contactor, improved travelling comfort and security among the operation personnel operation process. The dumper can overhaul the self electrical appliance fault, and the fault range of the electrical appliance can be directly determined through the digital quantity state display of the display unit and the circuit diagram on the display unit
In addition, other structures and functions of the dump truck according to the embodiment of the present invention are known to those skilled in the art, and are not described in detail for reducing redundancy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A digital quantity state display device of a dumper is characterized by comprising:
the acquisition unit is used for acquiring a digital quantity state signal of the dump truck;
the signal conversion unit is connected with the acquisition unit, performs voltage conversion on the digital quantity state signal and outputs the converted digital quantity state signal;
the processing unit is connected with the signal conversion unit, processes the converted digital quantity state signal and outputs a corresponding indicator light state signal;
and the display unit is connected with the processing unit and used for receiving the indicator lamp state signals and displaying the indicator lamp state signals through the indicator lamps so as to represent the digital quantity state of the corresponding dumper.
2. The dump truck digital quantity state display device according to claim 1, wherein the signal conversion unit comprises a voltage conversion circuit board for converting a high voltage of the digital quantity state signal into a low voltage.
3. The digital quantity status display device for the dump truck according to claim 2, wherein the voltage conversion circuit board comprises a plurality of 4-way photo-isolation integrated circuits and a 2-way photo-isolation integrated circuit.
4. The digital quantity status display device for the dump truck according to claim 1, wherein the display unit comprises a touch display screen, and a circuit diagram including the indicator light is displayed in the touch display screen.
5. The digital quantity state display device for the dump truck according to claim 2, wherein the digital quantity state signals comprise a contactor pull-in state signal, a traction master control signal, an electric brake master control signal, a direction control master signal, an inverter position signal and a contactor action driving output signal.
6. The digital quantity status display device for the dump truck according to claim 5, wherein the signal conversion unit converts the contactor pull-in status signal, the traction master control signal, the electric brake master control signal, the direction control master control signal and the inverter position signal from a high level of 24 volts to the ground connection of the signal input terminal of the processing unit.
7. The digital quantity state display device for the dump truck according to claim 6, wherein the signal conversion unit comprises a 24-volt relay, the 24-volt relay receives the contactor pull-in state signal, the traction master control signal, the electric brake master control signal, the direction control master signal and the reverser position signal, and a normally open contact of the 24-volt relay controls the connection with the ground of the truck body.
8. The dump truck digital quantity status display device according to claim 5, wherein the signal conversion unit converts the contactor operation driving output signal from 12V high level to ground connection of the signal input terminal of the processing unit.
9. The digital quantity state display device for the dump truck according to claim 8, wherein the signal conversion unit comprises a 12-volt relay, the 12-volt relay receives the contactor action driving output signal, and a normally open contact of the 12-volt relay is controlled to be connected with a ground of the truck body.
10. A dump truck characterized by comprising the dump truck digital quantity state display device according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922153470.2U CN210954715U (en) | 2019-12-04 | 2019-12-04 | Dumper digital quantity state display device and dumper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922153470.2U CN210954715U (en) | 2019-12-04 | 2019-12-04 | Dumper digital quantity state display device and dumper |
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| CN210954715U true CN210954715U (en) | 2020-07-07 |
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| CN201922153470.2U Active CN210954715U (en) | 2019-12-04 | 2019-12-04 | Dumper digital quantity state display device and dumper |
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