CN113790192A - Hydraulic system fault maintenance method and device and operation machine - Google Patents
Hydraulic system fault maintenance method and device and operation machine Download PDFInfo
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- CN113790192A CN113790192A CN202111013615.4A CN202111013615A CN113790192A CN 113790192 A CN113790192 A CN 113790192A CN 202111013615 A CN202111013615 A CN 202111013615A CN 113790192 A CN113790192 A CN 113790192A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000012423 maintenance Methods 0.000 title abstract description 16
- 238000013024 troubleshooting Methods 0.000 claims description 29
- 238000004590 computer program Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000004891 communication Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 239000010720 hydraulic oil Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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Abstract
The invention provides a method and a device for overhauling a fault of a hydraulic system and an operating machine, wherein the method for overhauling the fault of the hydraulic system comprises the following steps: acquiring pressure information at a target position in a hydraulic pipeline, wherein the distance between the target position and a target valve is smaller than a target distance; determining state information of the target valve based on the pressure information and the pressure threshold; receiving a first input of a user under the condition that the state information is in a clamping stagnation state; and responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to the target opening degree within the target time length. The hydraulic system fault maintenance method, the hydraulic system fault maintenance device and the operation machine can improve the accuracy and efficiency of fault detection, can automatically repair the valve fault, can reduce the complexity of repair, reduce the labor cost, can improve the repair efficiency, can timely eliminate the potential safety hazard of the operation machine, and reduce the occurrence risk of serious accidents.
Description
Technical Field
The invention relates to the technical field of operating machinery, in particular to a method and a device for overhauling a fault of a hydraulic system and operating machinery.
Background
The working machine often needs to bear a work task with a high load in a complex environment, a hydraulic system of the working machine is used for transmitting power, the hydraulic system bears the work load of the working machine, the hydraulic system is prone to failure, and safety accidents are prone to occurring due to the fact that the load is large, therefore, for the working machine, extra attention needs to be paid to the failure situation of the hydraulic system, and the failure mechanical energy of the hydraulic system needs to be detected and repaired in time.
For a hydraulic system of an operation machine, a valve is used as a key component for controlling hydraulic transmission and is a fault key point of the hydraulic system, the clamping stagnation phenomenon easily occurs, the detection and the repair of the clamping stagnation phenomenon of the valve are mainly realized manually at present, the manual maintenance cost is high, the fault point is difficult to find, the difficulty of disassembly and assembly and replacement after the fault point is found is also high, and the efficiency of detection and repair is low.
Disclosure of Invention
The invention provides a method, a device and an operating machine for overhauling a hydraulic system fault, which are used for solving the defects that in the prior art, the manual overhauling cost is high, a fault point is difficult to find, the difficulty of dismounting and replacing after the fault point is found is high, and the efficiency of detecting and repairing is low, so that the valve fault is automatically repaired, the complexity of repairing can be reduced, the labor cost is reduced, the repairing efficiency can be improved, the potential safety hazard of the operating machine can be timely eliminated, and the occurrence risk of serious accidents is reduced.
The invention provides a hydraulic system fault maintenance method, which comprises the following steps:
acquiring pressure information at a target position in a hydraulic pipeline, wherein the distance between the target position and a target valve is smaller than a target distance;
determining state information of the target valve based on the pressure information and a pressure threshold;
receiving a first input of a user under the condition that the state information is in a clamping stagnation state;
and responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to a target opening degree within a target time length.
According to the method for overhauling the fault of the hydraulic system, provided by the invention, under the condition that the state information is in the clamping stagnation state, the first input of a user is received, and the method comprises the following steps:
under the condition that the state information is in the clamping stagnation state, outputting an inquiry instruction for a user to give out the first input according to the inquiry instruction;
the first input is received.
According to the hydraulic system fault maintenance method provided by the invention, the hydraulic system fault maintenance method further comprises the following steps:
and uploading the state information to a server in real time so that the server feeds back the state information to a user.
According to the hydraulic system fault maintenance method provided by the invention, the target position is located at an oil inlet or an oil outlet of the target valve.
According to the hydraulic system fault maintenance method provided by the invention, the target control command is a trigger step pulse signal.
According to the method for overhauling the hydraulic system, the target valve comprises the following components: at least one of a boom control valve, a bucket control valve, a boom control valve, a travel control valve, a pilot proportional valve, and a relief valve.
The invention also provides a hydraulic system fault maintenance device, which comprises:
the acquisition module is used for acquiring pressure information at a target position in the hydraulic pipeline, and the distance between the target position and the target valve is smaller than a target distance;
a determination module to determine state information of the target valve based on the pressure information and a pressure threshold;
the receiving module is used for receiving a first input of a user under the condition that the state information is in a clamping stagnation state;
and the first sending module is used for responding to the first input and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to be adjusted to a target opening degree within a target time length.
The present invention also provides a working machine including:
a valve;
a pressure sensor;
according to the hydraulic system fault maintenance device, the valve and the pressure sensor are electrically connected with the hydraulic system fault maintenance device.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of any one of the hydraulic system fault repairing methods.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the hydraulic system troubleshooting method as described in any of the above.
According to the hydraulic system fault maintenance method, the hydraulic system fault maintenance device and the operation machine, the fault point of the valve jamming is found through detecting the pressure information, meanwhile, the valve can be automatically repaired after the confirmation of a user is obtained, the accuracy and the efficiency of fault detection can be improved, the automatic repair of the valve fault can be realized, the repair complexity can be reduced, the labor cost can be reduced, the repair efficiency can be improved, the potential safety hazard of the operation machine can be timely eliminated, and the occurrence risk of serious accidents can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a hydraulic system troubleshooting method provided by the present invention;
FIG. 2 is a block diagram of a hydraulic system troubleshooting method provided by the present invention;
FIG. 3 is a schematic structural diagram of a hydraulic system troubleshooting apparatus provided in the present invention;
FIG. 4 is a schematic illustration of a work machine according to the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The hydraulic system troubleshooting method, device and working machine of the present invention will be described with reference to fig. 1 to 5.
As shown in fig. 1 and 2, the present invention provides a hydraulic system troubleshooting method, an execution subject of which may be a vehicle control unit of a working machine, including the following steps 110 to 140.
In step 110, pressure information at a target position in the hydraulic pipeline is obtained, and the distance between the target position and the target valve is smaller than a target distance.
It can be understood that, at present, the hydraulic system of the working machine adopts valves in large batch to control the flow of hydraulic oil of the hydraulic system, the valves can be electromagnetic valves, and as time increases, the hydraulic system may age and wear, and the phenomenon of valve clamping stagnation easily occurs.
The pressure sensor is arranged at a target position of the hydraulic pipeline, the pressure sensor and the valve can be electrically connected with the vehicle control unit, and the distance between the target position and the target valve can be smaller than a target distance, namely the distance between a pressure detection point of the pressure sensor and the target valve can be smaller than the target distance, so that pressure information detected by the pressure sensor can reflect the pressure of hydraulic oil on the valve.
And step 120, determining the state information of the target valve based on the pressure information and the pressure threshold value.
It is understood that the pressure threshold may be preset, and may be pre-stored in a vehicle controller of the work machine, and after the vehicle controller receives the pressure information from the pressure sensor, the state information of the target valve may be determined according to the pressure information and the pressure threshold.
For example, the pressure information and the pressure threshold may be compared, and when the pressure information is greater than the pressure threshold, it is determined that the pressure of the hydraulic oil borne by the target valve exceeds the warning value range, so that the target valve may be stuck, and the state information of the corresponding target valve may be in a stuck state; of course, when the pressure information is smaller than the pressure threshold, it may be considered that the pressure of the hydraulic oil borne by the target valve does not exceed the warning value range, and at this time, the target valve is not stuck, and the state information of the corresponding target valve may be in a normal state.
And step 130, receiving a first input of the user under the condition that the state information is in the clamping stagnation state.
It can be understood that, according to the state information of the target valve, whether the target valve has a clamping stagnation phenomenon or not can be quickly determined, and a fault point can be quickly identified, wherein the target valve can be at least one of an arm control valve, a bucket control valve, a boom control valve, a walking control valve, a pilot proportional valve and a pressure relief valve.
At this point, a first input by the user may be received, and the first input by the user may be confirmation that the target valve is repaired.
And step 140, responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to the target opening degree within the target time length.
It is understood that, after receiving the first input, the vehicle control unit may respond to the first input and may send a target control command to the target valve, where the target control command is a logic control signal that may drive the target valve to adjust to the target opening degree within a target time period.
In some embodiments, the target duration may be 0 to 1 ms, for example, specifically set to 0.5 ms, and the target opening is larger than the current opening, that is, the target control command may control the valve to rapidly enlarge the opening in a short time, which is equivalent to giving an instant impact force to the valve.
In some specific embodiments, the working machine may be an excavator, when the excavator is idle, the unloading valve is responsible for relieving pressure of redundant hydraulic oil output by the main pump and returning the pressure of the redundant hydraulic oil to the hydraulic oil tank, under the condition that a pilot proportional valve of the unloading valve is stuck, it is detected that the outlet pressure of the main pump is far higher than normal pressure, at this time, the vehicle control unit sends an instruction to prompt an operator that the pilot proportional valve of the unloading valve is possibly stuck to inquire whether self-repairing is needed, and after the vehicle control unit receives an instruction for starting the self-repairing, the controller outputs a powerful step impact signal to the pilot proportional valve of the unloading valve until the valve core of the pilot electromagnetic valve of the unloading valve is stuck and stops when the outlet pressure of the main pump returns to a normal value.
Compared with manual detection of the valve of the hydraulic pipeline, the method and the device can realize automatic detection of the clamping stagnation phenomenon, can also detect the specific position of the clamping stagnation phenomenon, and can improve the accuracy and efficiency of fault detection.
Compared with the manual repair of the valve fault, the automatic repair method can automatically repair the valve fault, reduce the repair complexity, reduce the labor cost, improve the repair efficiency, eliminate the potential safety hazard of the operation machine in time and reduce the occurrence risk of serious accidents.
According to the hydraulic system fault maintenance method provided by the invention, the fault point of the valve jamming is found by detecting the pressure information, and meanwhile, after the confirmation of a user is obtained, the valve can be automatically repaired, so that the accuracy and the efficiency of fault detection can be improved, the automatic repair of the valve fault can be realized, the repair complexity can be reduced, the labor cost can be reduced, the repair efficiency can be improved, the potential safety hazard of an operating machine can be timely eliminated, and the occurrence risk of serious accidents can be reduced.
As shown in fig. 1 and fig. 2, in some embodiments, the step 130, in the case that the state information is in the stuck state, of receiving a first input of the user, includes: under the condition that the state information is in the clamping stagnation state, outputting an inquiry instruction for a user to give a first input according to the inquiry instruction; and receiving the first input.
It can be understood that when the state information is confirmed to be in the clamping stagnation state, the user can be prompted through a vehicle-mounted display screen, a loudspeaker or an indicator light to inform the user that the valve of the hydraulic system is clamped stagnation and the specific valve position.
At this time, the query may be performed on the user, for example, a query instruction may be output to the vehicle-mounted display screen, and a query control may be correspondingly displayed on the vehicle-mounted display screen; after the user sees the query control on the vehicle-mounted display screen, in response to the query, the user may give a first input, i.e., confirm that the target valve is repaired, via the touch pad, the button, or the handle.
As shown in fig. 1 and 2, in some embodiments, the hydraulic system troubleshooting method further comprises: and uploading the state information to the server in real time so that the server feeds back the state information to the user.
It can be understood that the work machine may have a communication module, the vehicle control unit may be communicatively connected to the server side through the communication module, and the vehicle control unit may send the state information of the valve to the server side after determining the state information of the target valve according to the pressure information, so that the state information may be fed back to the user through the server side, for example, the server side may be communicatively connected to the mobile terminal, the server side may push the state information of the corresponding work machine to the corresponding mobile terminal, and the user may hold the mobile terminal to view the state information of the target main valve of the work machine.
Of course, the user may also give the first input on the mobile terminal, and the server sends the first input to the vehicle control unit of the work machine, so that the user is helped to perform one-key repair on the valve fault of the work machine on the mobile terminal, such as a mobile phone, and the user experience can be greatly improved.
In some embodiments, the target location is at an oil inlet or an oil outlet of the target valve.
It can be understood that the pressure sensor can be installed at the oil inlet position of the target valve and also can be installed at the oil outlet position of the target valve, so that the pressure value born by the target valve can be accurately detected.
In some embodiments, the target control command is a step pulse signal, and the step pulse signal can enable the valve to generate an instant impact force in a short time, so that the valve can be quickly repaired.
The hydraulic system troubleshooting device provided by the present invention is described below, and the hydraulic system troubleshooting device described below and the hydraulic system troubleshooting method described above may be referred to in correspondence with each other.
As shown in fig. 3, the present invention provides a hydraulic system troubleshooting apparatus including: an acquisition module 310, a determination module 320, a reception module 330, and a first transmission module 340.
The obtaining module 310 is configured to obtain pressure information at a target position in the hydraulic pipeline, where a distance between the target position and the target valve is smaller than a target distance.
A determination module 320 for determining status information of the target valve based on the pressure information and the pressure threshold.
The receiving module 330 is configured to receive a first input of a user when the state information is in a stuck state.
And the first sending module 340 is configured to send, in response to the first input, a target control instruction to the target valve, where the target control instruction is used to drive the target valve to adjust to the target opening within the target time duration.
In some embodiments, the hydraulic system troubleshooting apparatus further includes a second sending module, configured to output an inquiry command when the state information is the stuck state, so that a user may give the first input according to the inquiry command.
In some embodiments, the hydraulic system troubleshooting device further includes a communication module, and the communication module is configured to upload the status information to the server side in real time, so that the server side feeds back the status information to a user.
In some embodiments, the target location is at an oil inlet or an oil outlet of the target valve.
In some embodiments, the target control command is a step pulse signal.
In some embodiments, the target valve comprises: at least one of a boom control valve, a bucket control valve, a boom control valve, a travel control valve, a pilot proportional valve, and a relief valve.
The hydraulic system fault overhauling device provided by the embodiment of the application is used for executing the hydraulic system fault overhauling method, the specific implementation mode of the hydraulic system fault overhauling device is consistent with the implementation mode of the method, the same beneficial effects can be achieved, and the detailed description is omitted here.
As shown in fig. 4, the present invention also provides a working machine including: the valve 410, the pressure sensor 420, and the hydraulic system troubleshooting apparatus 430 as described in any of the above, the valve 410 and the pressure sensor 420 are electrically connected to the hydraulic system troubleshooting apparatus 430.
Fig. 5 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 5: a processor (processor)510, a communication Interface (Communications Interface)520, a memory (memory)530 and a communication bus 540, wherein the processor 510, the communication Interface 520 and the memory 530 communicate with each other via the communication bus 540. Processor 510 may invoke logic instructions in memory 530 to perform a hydraulic system troubleshooting method comprising: acquiring pressure information at a target position in a hydraulic pipeline, wherein the distance between the target position and a target valve is smaller than a target distance; determining state information of the target valve based on the pressure information and a pressure threshold; receiving a first input of a user under the condition that the state information is in a clamping stagnation state; and responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to a target opening degree within a target time length.
Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform a method of troubleshooting hydraulic systems provided by the methods above, the method comprising: acquiring pressure information at a target position in a hydraulic pipeline, wherein the distance between the target position and a target valve is smaller than a target distance; determining state information of the target valve based on the pressure information and a pressure threshold; receiving a first input of a user under the condition that the state information is in a clamping stagnation state; and responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to a target opening degree within a target time length.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that when executed by a processor is implemented to perform the hydraulic system troubleshooting method provided above, the method comprising: acquiring pressure information at a target position in a hydraulic pipeline, wherein the distance between the target position and a target valve is smaller than a target distance; determining state information of the target valve based on the pressure information and a pressure threshold; receiving a first input of a user under the condition that the state information is in a clamping stagnation state; and responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to a target opening degree within a target time length.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of troubleshooting a hydraulic system, comprising:
acquiring pressure information at a target position in a hydraulic pipeline, wherein the distance between the target position and a target valve is smaller than a target distance;
determining state information of the target valve based on the pressure information and a pressure threshold;
receiving a first input of a user under the condition that the state information is in a clamping stagnation state;
and responding to the first input, and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to increase the current opening degree to a target opening degree within a target time length.
2. The hydraulic system troubleshooting method of claim 1 wherein said receiving a first input from a user if said status information is a stuck status comprises:
under the condition that the state information is in the clamping stagnation state, outputting an inquiry instruction for a user to give out the first input according to the inquiry instruction;
the first input is received.
3. The hydraulic system troubleshooting method of claim 1 further comprising:
and uploading the state information to a server in real time so that the server feeds back the state information to a user.
4. The hydraulic system troubleshooting method of any one of claims 1 through 3 wherein the target location is at an oil inlet or an oil outlet of the target valve.
5. A hydraulic system troubleshooting method according to any one of claims 1 through 3 wherein the target control command is a trigger step pulse signal.
6. The hydraulic system troubleshooting method of any one of claims 1 through 3 wherein the target valve comprises: at least one of a boom control valve, a bucket control valve, a boom control valve, a travel control valve, a pilot proportional valve, and a relief valve.
7. A hydraulic system troubleshooting device characterized by comprising:
the acquisition module is used for acquiring pressure information at a target position in the hydraulic pipeline, and the distance between the target position and the target valve is smaller than a target distance;
a determination module to determine state information of the target valve based on the pressure information and a pressure threshold;
the receiving module is used for receiving a first input of a user under the condition that the state information is in a clamping stagnation state;
and the first sending module is used for responding to the first input and sending a target control instruction to the target valve, wherein the target control instruction is used for driving the target valve to be adjusted to a target opening degree within a target time length.
8. A work machine, comprising:
a valve;
a pressure sensor;
the hydraulic system troubleshooting apparatus of claim 7 wherein said valve and said pressure sensor are electrically connected to said hydraulic system troubleshooting apparatus.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the program, carries out the steps of the method for troubleshooting a hydraulic system according to any one of claims 1 to 7.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, performs the steps of the hydraulic system troubleshooting method of any one of claims 1 through 7.
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| CN202111013615.4A CN113790192A (en) | 2021-08-31 | 2021-08-31 | Hydraulic system fault maintenance method and device and operation machine |
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| CN202111013615.4A CN113790192A (en) | 2021-08-31 | 2021-08-31 | Hydraulic system fault maintenance method and device and operation machine |
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