CN105570234A - Device and method for detecting hydraulic oil leakage - Google Patents
Device and method for detecting hydraulic oil leakage Download PDFInfo
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- CN105570234A CN105570234A CN201610096652.9A CN201610096652A CN105570234A CN 105570234 A CN105570234 A CN 105570234A CN 201610096652 A CN201610096652 A CN 201610096652A CN 105570234 A CN105570234 A CN 105570234A
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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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Abstract
The invention provides a device and method for detecting hydraulic oil leakage. The device comprises a cantilever frame detecting module, a landing leg detecting module, a liquid level monitoring module, a determining module and a communication module, wherein the cantilever frame detecting module is used for judging whether a cantilever frame is tucked or not according to a signal of a cantilever frame detecting unit; the landing leg detecting module is used for judging whether a landing leg is tucked or banned from working or not according to a signal of a landing leg management device when it is determined that the cantilever frame is tucked; the liquid level monitoring module is used for reading a liquid level value of a liquid level detecting unit of a hydraulic oil tank to obtain the first liquid level value and storing the first liquid level value when it is determined that the landing leg is tucked or banned from working; the liquid level monitoring module is further used for reading a liquid level value of the liquid level detecting unit to obtain the second liquid level value when a controller is electrified next time; the determining module is used for determining whether the difference value between the first liquid level value and the second liquid level value meets a preset alarming condition or not; the communication module is used for outputting an alarming signal to an alarming unit when the alarming condition is met. According to the device and method for detecting the hydraulic oil leakage, whether hydraulic oil of a pump truck leaks during downtime or not can be detected.
Description
Technical field
The present invention relates to hydraulicdriven engineering vehicle technical field, particularly, relate to a kind of apparatus and method detecting hydraulic oil leakage of oil.
Background technique
Concrete arm support pumper is a kind of high-effective concrete conveying equipment integrating traveling, pumping, cloth function, primarily of chassis, boom system, leg system, hydraulic system, electrical system and pumping system six major part composition.Its power resources are that motor acting is converted into hydraulic energy, and hydraulic oil container is a part indispensable in hydraulic system.When pumper operation, the oil mass of hydraulic oil should meet the oil mass needed for pump truck everything, just can make hydraulic oil normal circulation in whole hydraulic system, and hydraulic pressure oil level lower than the inlet port of oil pump, otherwise oil pump suction sky can not occur, and damages oil pump.
Inhaling empty situation to protect oil pump to occur, hydraulic oil level sensor being generally installed in pump truck hydraulic oil container and detecting hydraulic pressure oil level, when oil level is lower than warning value, sending alarm signal, time serious, stopping pump truck work.But; this technology only can (pump truck general structure be divided into upper dress and chassis at pump truck upper-loading; upper dress comprises support system, pumping system, boom system and electric hydraulic system) electric time, passive prevention oil pump is inhaled empty, can not detect pump truck hydraulic oil whether leakage of oil between down period.
Summary of the invention
The invention provides a kind of apparatus and method detecting hydraulic oil leakage of oil, must not the problem of testing pump car hydraulic oil whether leakage of oil between down period for solution.
To achieve these goals, the invention provides a kind of device detecting hydraulic oil leakage of oil, be applied to the controller on vehicle, described device comprises:
According to the signal of jib detection unit, jib testing module, judges whether jib draws in;
Supporting leg testing module, is connected with described jib testing module, for when determining that described jib draws in, judges whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus;
Level monitoring module, being connected with described jib testing module and described supporting leg testing module, for when determining that described supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtain the first level value, and store described first level value;
Described level monitoring module, also for when described controller powers on next time, reads the level value of described level sensing unit, obtains the second level value;
Determination module, with described level monitoring model calling, for judging whether the difference of described first level value and described second level value meets the alert if preset;
Communication module, is connected with described determination module, and for when meeting described alert if, output alarm signal is to alarm unit.
Preferably, described jib testing module comprises:
Jib puts in place signal monitoring module, and the jib for detecting described jib detection unit puts in place signal;
Jib draws determination module in, to put in place signal monitoring model calling with described jib, for when detect the jib of described jib detection unit put in place signal be activated time, determine that described jib draws in.
Preferably, described supporting leg management apparatus is supporting leg detection unit, and described supporting leg detection unit comprises:
Supporting leg puts in place signal monitoring module, and for when determining that described jib draws in, the supporting leg detecting described supporting leg detection unit puts in place signal;
Supporting leg draws determination module in, to put in place signal monitoring model calling with described supporting leg, for when detect the supporting leg of described supporting leg detection unit put in place signal be activated time, determine that described supporting leg draws in.
Preferably, described supporting leg management apparatus is the enable control unit of supporting leg, and described supporting leg testing module comprises:
Supporting leg enable signal monitoring modular, for when determining that described jib draws in, detects the supporting leg enable signal of the enable control unit of described supporting leg;
Supporting leg working state determination module, is connected with described supporting leg enable signal monitoring modular, for when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of described supporting leg, determines that described supporting leg forbids work.
Preferably, described level monitoring module comprises:
Read module, for when detect the jib of described jib detection unit put in place signal be activated time, maybe when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of described supporting leg, the level value of described level sensing unit is read after transit time T, obtain described first level value, and store described first level value;
Memory module, is connected with described read module, for storing described first level value.
Preferably,
Described read module also for, before described controller power-off, when again detect the supporting leg of described supporting leg detection unit put in place signal be activated time, or when again detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of described supporting leg, again read the level value of described level sensing unit;
Described memory module, also for upgrading described first level value stored.
Preferably, described device also comprises:
More new module, be connected with described level monitoring module, described jib testing module and described supporting leg testing module, for before described controller power-off, judge whether to arrive level value update time according to the level value revision cycle of presetting, when arrival level value update time, again read the level value of described level sensing unit, and upgrade described first level value that described level monitoring module stored.
Preferably,
Described jib testing module, also for when described controller powers on next time, judge whether jib draws according to the signal of jib detection unit, described supporting leg testing module is also for judging according to the signal of supporting leg management apparatus whether supporting leg has drawn in or forbidden work;
For working as, described level monitoring module, detects that described jib draws in, and when supporting leg has drawn in or forbidden work, reads the level value of described level sensing unit, obtain the second level value.
Preferably, described determination module comprises:
Difference calculating module, for obtaining the difference of described first level value and described second level value, described first level value is last the first level value upgraded before power-off;
Comparison module, is connected with described difference calculating module, for described difference and the alarm threshold value preset being compared;
Warning determination module, is connected with described comparison module, for when described difference is greater than described alarm threshold value, judges to meet alert if;
Described warning determination module, also for when described difference is less than or equal to described alarm threshold value, judges not meet alert if.
To achieve these goals, the present invention also provides a kind of method detecting hydraulic oil leakage of oil, is applied to the controller on vehicle, and described method comprises:
Judge whether jib draws according to the signal of jib detection unit;
When determining that described jib draws in, judge whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus;
When determining that described supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtaining the first level value, and store described first level value;
When described controller powers on next time, read the level value of described level sensing unit, obtain the second level value;
Judge whether the difference of described first level value and described second level value meets the alert if preset;
When meeting described alert if, output alarm signal is to alarm unit.
The invention provides a kind of apparatus and method detecting hydraulic oil leakage of oil, this system comprises jib detection unit, supporting leg management apparatus, controller, level sensing unit and alarm unit, described controller comprises the device of described detection hydraulic oil leakage of oil, this device comprises: jib testing module, judges whether jib draws according to the signal of jib detection unit; Supporting leg testing module, is connected with described jib testing module, for when determining that described jib draws in, judges whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus; Level monitoring module, being connected with described jib testing module and described supporting leg testing module, for when determining that described supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtain the first level value, and store described first level value; Described level monitoring module, also for when described controller powers on next time, reads the level value of described level sensing unit, obtains the second level value; Determination module, with described level monitoring model calling, for judging whether the difference of described first level value and described second level value meets the alert if preset; Communication module, is connected with described determination module, and for when meeting described alert if, output alarm signal is to alarm unit.As can be seen here; the device of above-mentioned detection hydraulic oil leakage of oil can obtain exactly pump truck shut down before the level value of hydraulic oil container; thus the level value of hydraulic oil container before shutting down according to pump truck and the level value of hydraulic oil container when powering on next time judge hydraulic oil container whether leakage of oil, thus can realize detecting pump truck hydraulic oil whether leakage of oil between down period.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is a kind of structured flowchart detecting the system of hydraulic oil leakage of oil provided by the invention;
Fig. 2 is the structured flowchart that another kind provided by the invention detects the system of hydraulic oil leakage of oil;
Fig. 3 is the structured flowchart of the system of another detection hydraulic oil leakage of oil provided by the invention;
Fig. 4 is the flow chart of the systems axiol-ogy hydraulic oil leakage of oil whether method of leakage of oil of detection hydraulic oil provided by the invention leakage of oil;
Fig. 5 is the flow chart of the systems axiol-ogy hydraulic oil leakage of oil whether another kind of method of leakage of oil of detection hydraulic oil provided by the invention leakage of oil;
Fig. 6 is a kind of structured flowchart detecting the device of hydraulic oil leakage of oil provided by the invention;
Fig. 7 is the structural frames of a kind of jib testing module provided by the invention;
Fig. 8 is the structural frames of a kind of supporting leg testing module provided by the invention;
Fig. 9 is the structured flowchart of another kind of supporting leg testing module provided by the invention;
Figure 10 is the structured flowchart of a kind of level monitoring module provided by the invention;
Figure 11 is the structured flowchart of the device of another detection hydraulic oil leakage of oil provided by the invention;
Figure 12 is the structured flowchart of a kind of determination module provided by the invention;
Figure 13 is the structured flowchart that another kind provided by the invention detects the system of hydraulic oil leakage of oil;
Figure 14 is a kind of schematic flow sheet detecting the method for hydraulic oil leakage of oil provided by the invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Fig. 1 is a kind of structured flowchart detecting the system of hydraulic oil leakage of oil provided by the invention, this system can be applied to hydraulicdriven concrete cement pump truck, as shown in Figure 1, this system can comprise: controller 1, jib detection unit 2, supporting leg management apparatus 3, level sensing unit 4 and alarm unit 5.
Wherein, jib detection unit 2, supporting leg management apparatus 3, level sensing unit 4 are connected with controller 5 with alarm unit 5, the wherein connection of any one and controller 1 in jib detection unit 2, supporting leg management apparatus 3, level sensing unit 4 and alarm unit 5, can be the connection of wired mode, such as CAN (ControllerAreaNetwork, controller local area network) bus, RS-232 interface etc., or, also may adopt the connection of wireless mode, such as Wi-Fi etc.
Wherein, whether jib detection unit 2 draws in for detecting jib, and this jib detection unit can be jib location switch, and this jib location switch includes but not limited to: limit switch, or proximity switch.
Whether supporting leg management apparatus 3 draws in for detecting supporting leg, or for controlling the enable of supporting leg or forbidding work; Wherein, Fig. 2 is the structured flowchart that another kind provided by the invention detects the system of hydraulic oil leakage of oil, as shown in Figure 2, supporting leg management apparatus 3 can be supporting leg detection unit 31, supporting leg detection unit 31, whether can draw in by direct-detection supporting leg, this supporting leg detection unit 31 includes but not limited to: limit switch, or proximity switch; Or, Fig. 3 is the structured flowchart of the system of another detection hydraulic oil leakage of oil provided by the invention, supporting leg management apparatus 3 can be the enable control unit 32 of supporting leg, the enable control unit 32 of supporting leg, can control the enable of supporting leg or forbid work, the enable control unit 32 of this supporting leg includes but not limited to self-resetting switch.
Level sensing unit 4 is for detecting the liquid level in hydraulic oil container, and level sensing unit 4 can be the liquid level sensor be arranged in hydraulic oil container.
Alarm unit 5 is for reporting to the police, this alarm unit 5 can comprise at least one in audible device, tutorial light or display screen, namely can be a kind of warning device comprised in audible device, tutorial light or display screen, also can be comprise wherein several warning devices be combined into.
Controller 1 can be PLC (ProgrammableLogicController, programmable logic controller (PLC)).
Below the flow process that said system is detecting hydraulic oil leakage of oil is described, in the first implementation, for supporting leg management apparatus 3 for supporting leg detection unit closes 31, Fig. 4 is the flow chart of the systems axiol-ogy hydraulic oil leakage of oil whether method of leakage of oil of detection hydraulic oil provided by the invention leakage of oil, comprises the following steps:
1. detect jib to put in place signal.
When jib detection unit 2 detects that jib is in curling position, this jib detection unit 2 exports jib by the connection between controller 1 to this controller 1 and to put in place signal, controller 1 detects, and (detecting here can be understood as by detecting in real time, or also can be passive receiving) jib that sends of jib detection unit 2 puts in place signal, think that the jib signal that puts in place is activated, this Time Controller 1 determines that jib draws in.
It should be noted that, based on security consideration, concrete cement pump truck needs first to put down supporting leg in use, then stretches jib; When returning the vehicle to the garage and knock off, needing first to draw jib in, then regaining supporting leg.Therefore, first can detect jib and whether draw in before power-off, then detect supporting leg and whether draw in.
2. detect supporting leg to put in place signal.
When supporting leg detection unit 31 detects that supporting leg is in curling position, this supporting leg detection unit 31 exports supporting leg by the connection between controller 1 to this controller 1 and to put in place signal, controller 1 detects, and (detecting here can be understood as by detecting in real time, or also can be passive receiving) supporting leg that sends of supporting leg detection unit 31 puts in place signal, think that the supporting leg signal that puts in place is activated, this Time Controller 1 determines that supporting leg draws in.
3. read the level value of level sensing unit, obtain the first level value h1.
When controller 1 determines that jib and supporting leg draw in all, controller 1 is by reading the level value of level sensing unit 4 with the connection of level sensing unit 4, obtain the first level value h1, and this first level value h1 is stored in the memory module of controller 1 by controller 1, and this memory module still can store data under power-down conditions.
Optionally, in order to when reading level value, the liquid level in hydraulic oil container is stable, controller 1 puts in place after signal receiving supporting leg, the level value of level sensing unit 4 can be read after transit time T, obtain this first level value h1, thus level value more accurately can be obtained.
If 4. level value changes before power-off, upgrade the first level value h1 stored.
If before power-off, any one in jib and supporting leg is used again, all again to read the level value of level sensing unit 4, when again detecting that jib signal and the supporting leg signal that puts in place that puts in place is activated, when namely again determining that jib and supporting leg draw in all, again read the level value of level sensing unit 4, and upgrade the first level value h1 stored.Can ensure that arm support oil cylinder and support oil cylinder do not have any action, can not have influence on the liquid level in hydraulic oil container when reading first level value h1 like this.Thus ensure that the first level value h1 read is correct.
Or, controller 1 also can read the level value of level sensing unit 4 according to some cycles, such as, before controller power-off, judge whether to arrive level value update time according to the level value revision cycle of presetting, when arriving level value update time, controller 1 reads the level value of level sensing unit 4 again, and upgrade the first level value h1 that controller 1 stored, thus the first level value h1 that regular update has stored.Thus can ensure when power-off, the first level value h1 stored in controller 1 is up-to-date.
5. when controller 1 powers on, if jib, supporting leg draw in all next time, then read the level value of level sensing unit, obtain the second level value h2.
Before reading second level value h2, first carry out detecting whether the jib signal that puts in place is activated, and detect the supporting leg signal that puts in place and whether be activated, when jib put in place signal and supporting leg put in place signal be all activated time, controller 1 obtains this second level value h2 by the level value reading level sensing unit 4 with the connection of level sensing unit 4, this be in order to determined before reading second level value h2 this time power on and in time period once between power-off jib and supporting leg do not operated, thus avoid the impact on hydraulic oil container liquid level, to ensure that the second level value h2 read is accurately.
6. controller 1 difference of the first level value h1 and the second level value h2 compares with the alarm threshold value Δ h preset.
The difference of h1-h2 and Δ h compare by controller 1, if h1-h2 is less than or equal to Δ h, then controller 1 can think that this difference is that hydraulic oil in hydraulic oil container fluctuates normally; If h1-h2 is greater than Δ h, then controller 1 thinks hydraulic oil container leakage of oil, should report to the police, then carry out next step.
7. controller 1 is to alarm unit 5 output alarm signal.
Controller 1 is after alarm unit 5 output alarm signal, and alarm unit 5 is reported to the police.Wherein, if alarm unit 5 is audible devices, such as, is loudspeaker or buzzer, then can sends the alarm sound pre-seted; If alarm unit 5 is tutorial light, then can light this tutorial light, or this tutorial light that glimmers is reported to the police, if alarm unit 5 is display screens, then can on this display screen display alarm information, such as show the information such as " hydraulic oil container leakage of oil "; Or alarm unit 5 also can adopt any two kinds or whole combinations in above-mentioned three kinds of Type of alarm.
In the second implementation, for the flow chart of the systems axiol-ogy hydraulic oil leakage of oil of supporting leg management apparatus 3 to be the enable control unit of supporting leg 32, Fig. 5 the be detection hydraulic oil provided by the invention leakage of oil whether another kind of method of leakage of oil, comprise the following steps:
1. detect jib to put in place signal (identical with the step 1 of method shown in Fig. 4, to repeat no more).
2. detect supporting leg enable signal.
It is enable or forbid work that the enable control unit of supporting leg 32 can control supporting leg, wherein the enable control unit of supporting leg 32 control supporting leg enable or forbid work time the supporting leg enable signal that produces adopt binary mode, namely high level (numeral " 1 ") and low level (digital " 0 ") control can be passed through, if supporting leg enable signal is high level, represent that supporting leg is enabled, supporting leg operation can be carried out, if supporting leg enable signal is low level, represent that supporting leg is prohibited work, can not carry out supporting leg operation.
Therefore, controller 1 can Real-Time Monitoring supporting leg enable signal, when detecting that trailing edge (i.e. supporting leg enable signal become low level place from high level) appears in supporting leg enable signal, can think and the firm execution of supporting leg be in the state of the work of being prohibited.
3. read the level value of level sensing unit, obtain the first level value h1.
When controller 1 determines that jib draws in, and when supporting leg is in and forbids work, controller 1 is by reading the level value of level sensing unit 4 with the connection of level sensing unit 4, obtain the first level value h1, and this first level value h1 is stored in the memory module of controller 1 by controller 1, and this memory module still can store data under power-down conditions.
Optionally, in order to when reading level value, the liquid level in hydraulic oil container is stable, controller 1 is after trailing edge supporting leg enable signal being detected, the level value of level sensing unit 4 can be read after transit time T, obtain this first level value h1, thus level value more accurately can be obtained.
If 4. level value changes before power-off, upgrade the first level value h1 stored.
If before power-off, any one in jib and supporting leg is used again, all again to read the level value of level sensing unit 4, when jib put in place signal be activated, when again detect supporting leg enable signal occur lower jump along time, namely again determine supporting leg be prohibited work time, again read the level value of level sensing unit 4, and upgrade the first level value h1 stored.Can ensure that support oil cylinder does not have any action, can not have influence on the liquid level in hydraulic oil container when reading first level value h1 like this.Thus ensure that the first level value h1 read is correct.
Or controller 1 also can read the level value of level sensing unit 4 according to some cycles, thus the first level value h1 that regular update has stored.Thus can ensure when power-off, the first level value h1 stored in controller 1 is up-to-date.
5. when controller 1 powers on, if jib has drawn in and supporting leg forbids work next time, then read the level value of level sensing unit, obtain the second level value h2.
Before reading second level value h2, first carry out detecting whether the jib signal that puts in place is activated, and whether detection supporting leg enable signal is in low level, when the jib signal that puts in place is activated, and detect supporting leg enable signal when being in low level, determine that jib has drawn in and supporting leg forbids work, this Time Controller 1 obtains this second level value h2 by the level value reading level sensing unit 4 with the connection of level sensing unit 4, this be in order to determined before reading second level value h2 this time power on and in time period once between power-off jib and supporting leg do not operated, thus avoid the impact on hydraulic oil container liquid level, to ensure that the second level value h2 read is accurately.
6. controller 1 first level value h1 compares (identical with the step 6 of method shown in Fig. 4, to repeat no more) with the alarm threshold value Δ h preset with the difference of the second level value h2.
7. controller 1 is to alarm unit 5 output alarm signal (identical with the step 7 of method shown in Fig. 4, to repeat no more).
The invention provides a kind of system detecting hydraulic oil leakage of oil, this system comprises jib detection unit, supporting leg management apparatus, controller, level sensing unit and alarm unit, when jib detection unit detects that jib is in curling position, this jib detection unit exports jib to this controller and to put in place signal, controller detects that jib puts in place after signal, think that the jib signal that puts in place is activated, determine that jib draws in, when supporting leg detection unit detects that supporting leg is in curling position, this supporting leg detection unit exports supporting leg to this controller and to put in place signal, controller detects that supporting leg puts in place after signal, think that the supporting leg signal that puts in place is activated, determine that supporting leg draws in, or controller can Real-Time Monitoring supporting leg enable signal, when detecting that trailing edge appears in supporting leg enable signal, think the firm execution of supporting leg, be in the state of the work of being prohibited, when jib draws in, and supporting leg is when also having drawn in or forbidden work, read the level value of level sensing unit, obtain the first level value, when controller powers on next time, if and jib has drawn in and supporting leg has also drawn in or forbidden work, read the level value of level sensing unit, obtain the second level value, the controller difference of the first level value and the second level value compares with the alarm threshold value preset, when difference is greater than alarm threshold value to alarm unit output alarm signal, alarm unit receives alarm signal and reports to the police.As can be seen here; the device of above-mentioned detection hydraulic oil leakage of oil can obtain exactly pump truck shut down before the level value of hydraulic oil container; thus the level value of hydraulic oil container before shutting down according to pump truck and the level value of hydraulic oil container when powering on next time judge hydraulic oil container whether leakage of oil, thus can realize detecting pump truck hydraulic oil whether leakage of oil between down period.
Fig. 6 is a kind of structured flowchart detecting the device 10 of hydraulic oil leakage of oil provided by the invention, be applied to the controller on vehicle, this vehicle can be hydraulicdriven concrete cement pump truck, this controller can be the controller 1 detected shown in Fig. 1 in the system of hydraulic oil leakage of oil, and as shown in Figure 6, device 10 comprises: jib testing module 110, supporting leg testing module 120, level monitoring module 130, determination module 140 and communication module 150, wherein:
According to the signal of jib detection unit, jib testing module 110, judges whether jib draws in; This jib detection unit can be the jib detection unit 2 in the arbitrary shown system detecting hydraulic oil leakage of oil in Fig. 1 ~ 3.
Supporting leg testing module 120, is connected 110 with jib testing module, for when determining that jib draws in, judges whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus; This supporting leg management apparatus can be the supporting leg management apparatus 3 detected shown in Fig. 1 in the system of hydraulic oil leakage of oil.
Level monitoring module 130, being connected with jib testing module 110 and supporting leg testing module 120, for when determining that supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtain the first level value, and store the first level value; This level sensing unit can be the level sensing unit 4 in the arbitrary shown system detecting hydraulic oil leakage of oil in Fig. 1 ~ 3.
Level monitoring module 130, also for when controller powers on next time, reads the level value of level sensing unit, obtains the second level value.
Determination module 140, with level monitoring model calling 130, for judging whether the difference of the first level value and the second level value meets the alert if preset.
Communication module 150, is connected 140 with determination module, and for when meeting alert if, output alarm signal is to alarm unit; This alarm unit can be the alarm unit 5 in the arbitrary shown system detecting hydraulic oil leakage of oil in Fig. 1 ~ 3.
Optionally, Fig. 7 is the structural frames of a kind of jib testing module 110 provided by the invention, and as shown in Figure 7, jib testing module 110 comprises:
Jib puts in place signal monitoring module 1101, and this jib signal monitoring module 1101 that puts in place can be connected with this jib detection unit 2, and the jib for detecting jib detection unit 2 puts in place signal;
Jib draws determination module 1102 in, to put in place signal monitoring model calling 111 with jib, for when detect the jib of jib detection unit put in place signal be activated time, determine that jib draws in.
Optionally, in one implementation, supporting leg management apparatus is supporting leg detection unit, this supporting leg detection unit can be the supporting leg detection unit 31 shown in Fig. 2, Fig. 8 is the structural frames of a kind of supporting leg testing module 120 provided by the invention, and as shown in Figure 8, supporting leg testing module 120 comprises:
Supporting leg puts in place signal monitoring module 1201a, and this supporting leg signal monitoring module 1201 that puts in place can be connected with this supporting leg detection unit 31, and for when determining that jib draws in, the supporting leg detecting supporting leg detection unit 31 puts in place signal;
Supporting leg draws determination module 1202a in, is connected with the supporting leg signal monitoring module 1201 that puts in place, for when detect the supporting leg of supporting leg detection unit put in place signal be activated time, determine that supporting leg draws in.
Optionally, supporting leg management apparatus is the enable control unit of supporting leg, the structured flowchart of the enable control unit of this supporting leg can be the enable control unit of supporting leg 32, Fig. 9 shown in Fig. 3 be another kind of supporting leg testing module 120 provided by the invention, as shown in Figure 9, supporting leg testing module 120 comprises:
Supporting leg enable signal monitoring modular 1201b, this supporting leg enable signal monitoring modular 1201b can be connected with the enable control unit 32 of this supporting leg, for when determining that jib draws in, detects the supporting leg enable signal of the enable control unit 32 of supporting leg;
Supporting leg working state determination module 1202b, is connected with supporting leg enable signal monitoring modular 1202b, for when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit 32 of supporting leg, determines that supporting leg forbids work.
Optionally, Figure 10 is the structured flowchart of a kind of level monitoring module 130 provided by the invention, and as shown in Figure 10, level monitoring module 130 comprises:
Read module 1301, this read module 1301 can be connected with this level sensing unit 4, for when detect the jib of jib detection unit 31 put in place signal be activated time, maybe when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit 32 of supporting leg, the level value of level sensing unit 4 is read after transit time T, obtain the first level value, and store the first level value;
Memory module 1302, is connected with read module 1301, for storing the first level value.
Optionally, read module 1301, also for before controller power-off, when again detect the supporting leg of supporting leg detection unit 31 put in place signal be activated time, or when again detecting that trailing edge appears in the supporting leg enable signal of the enable control unit 32 of supporting leg, again read the level value of level sensing unit 4;
Memory module 1302, also for upgrading the first level value stored.
Optionally, Figure 11 is the structured flowchart of the device 10 of another detection hydraulic oil leakage of oil provided by the invention, and device also comprises:
More new module 160, be connected with level monitoring module 130, jib testing module 110 and supporting leg testing module 120, for before controller power-off, judge whether to arrive level value update time according to the level value revision cycle of presetting, when arrival level value update time, level monitoring module 130 reads the level value of level sensing unit 4 again, and upgrades the first level value that level monitoring module 120 stored.
Optionally,
Jib testing module 110, also for when controller 1 powers on next time, judge whether jib draws according to the signal of jib detection unit 2, supporting leg testing module 120 is also for judging according to the signal of supporting leg management apparatus 3 whether supporting leg has drawn in or forbidden work;
For working as, level monitoring module 120, detects that jib draws in, and when supporting leg has drawn in or forbidden work, read the level value of level sensing unit, obtain the second level value.
Optionally, Figure 12 is the structured flowchart of a kind of determination module 150 provided by the invention, and as shown in figure 12, determination module 140 comprises:
Difference calculating module 1401, for obtaining the difference of the first level value and the second level value, the first level value is last the first level value upgraded before power-off;
Comparison module 1402, is connected with difference calculating module 1401, for difference and the alarm threshold value preset being compared;
Warning determination module 1403, is connected with comparison module 1402, for when difference is greater than alarm threshold value, judges to meet alert if;
Warning determination module 1403, also for when difference is less than or equal to alarm threshold value, judges not meet alert if.
This warning determination module 143 can be connected with this alarm unit 5, when judging to meet alert if to this alarm unit 5 output alarm signal.
In addition, " connection " mentioned above, connecting, can be the connection of wired mode, such as CAN, RS-232 interface etc., or, also may adopt the connection of wireless mode, such as Wi-Fi etc.
In addition, Figure 13 is the structured flowchart that another kind provided by the invention detects the system of hydraulic oil leakage of oil, and as shown in Figure 3, exemplary provides above-mentioned a kind of device a kind of mode of execution within the system detecting hydraulic oil leakage of oil, includes but not limited to this.
The invention provides a kind of device detecting hydraulic oil leakage of oil, this device comprises: jib testing module, judges whether jib draws according to the signal of jib detection unit; Supporting leg testing module, is connected with jib testing module, for when determining that jib draws in, judges whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus; Level monitoring module, is connected with jib testing module and supporting leg testing module, for when determining that supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtaining the first level value, and store the first level value; Level monitoring module, also for when controller powers on next time, reads the level value of level sensing unit, obtains the second level value; Determination module, with level monitoring model calling, for judging whether the difference of the first level value and the second level value meets the alert if preset; Communication module, is connected with determination module, and for when meeting alert if, output alarm signal is to alarm unit.As can be seen here; the device of above-mentioned detection hydraulic oil leakage of oil can obtain exactly pump truck shut down before the level value of hydraulic oil container; thus the level value of hydraulic oil container before shutting down according to pump truck and the level value of hydraulic oil container when powering on next time judge hydraulic oil container whether leakage of oil, thus can realize detecting pump truck hydraulic oil whether leakage of oil between down period.
Figure 14 is that the present invention also provides a kind of schematic flow sheet detecting the method for hydraulic oil leakage of oil, the method, be applicable to the arbitrary shown device of Fig. 6 to Figure 12, this device can be arranged in the controller of vehicle, this controller can be the arbitrary controllers 1 in Fig. 1 ~ 3, as shown in figure 13, described method comprises:
According to the signal of jib detection unit, step 101, judges whether jib draws in.
According to the signal of supporting leg management apparatus, step 102, when determining that jib draws in, judges whether supporting leg has drawn in or forbidden work.
Step 103, when determining that supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtaining the first level value, and store the first level value.
Step 104, when controller powers on next time, reads the level value of level sensing unit, obtains the second level value.
Step 105, judges whether the difference of the first level value and the second level value meets the alert if preset.
Step 106, when meeting alert if, output alarm signal is to alarm unit.
Optionally, judge that the step whether jib has drawn in comprises according to the signal of jib detection unit described in step 101:
The jib detecting jib detection unit puts in place signal.Wherein, this jib detection unit can be the arbitrary shown jib detection units 2 in Fig. 1 ~ 3, when jib detection unit detects that jib is in curling position, this jib detection unit exports jib by the connection between controller to this controller and to put in place signal, therefore when detect jib that test arm frame detection unit 2 exports put in place signal time, can think that the jib of the jib detection unit signal that puts in place is activated.
When detect the jib of jib detection unit put in place signal be activated time, determine that jib draws in.
Wherein, supporting leg management apparatus can be supporting leg detection unit and the enable control unit of supporting leg; can be such as the supporting leg detection unit 31 in the system shown in Fig. 2 and Fig. 3 and the enable control unit 32 of supporting leg respectively; therefore; if supporting leg management apparatus is supporting leg detection unit; described in step 102 when determining that jib draws in, judge whether supporting leg has drawn in or forbidden that the step of work comprises according to the signal of supporting leg management apparatus:
When determining that jib draws in, the supporting leg detecting supporting leg detection unit puts in place signal.Wherein, when supporting leg detection unit detects that supporting leg is in curling position, this supporting leg detection unit exports supporting leg by the connection between controller to this controller and to put in place signal, therefore when detect supporting leg that supporting rack detection unit exports put in place signal time, can think that the supporting leg of the supporting leg detection unit signal that puts in place is activated.
When detect the supporting leg of supporting leg detection unit put in place signal be activated time, determine that supporting leg draws in.
Or, if supporting leg management apparatus is the enable control unit of this supporting leg, described in step 102 when determining that jib draws in, judge whether supporting leg has drawn in or forbidden that the step of work comprises according to the signal of supporting leg management apparatus:
When determining that jib draws in, detect the supporting leg enable signal of the enable control unit of supporting leg.Wherein, it is enable or forbid work that the enable control unit of supporting leg can control supporting leg, wherein the enable control unit of supporting leg controls supporting leg supporting leg enable signal that is enable or that produce when forbidding work and adopts binary mode, namely high level (numeral " 1 ") and low level (digital " 0 ") control can be passed through, if supporting leg enable signal is high level, represent that supporting leg is enabled, supporting leg operation can be carried out, if supporting leg enable signal is low level, represent that supporting leg is prohibited work, can not carry out supporting leg operation.
Therefore, can Real-Time Monitoring supporting leg enable signal, when detecting that trailing edge (i.e. supporting leg enable signal become low level place from high level) appears in supporting leg enable signal, can think and the firm execution of supporting leg be in the state of the work of being prohibited.
When detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of supporting leg, determine that supporting leg forbids work.
Optionally, described in step 103 when determining that supporting leg has drawn in or forbidden operating conditions, read the first level value that the level sensing unit of hydraulic oil container is current, and the step storing the first level value comprises:
When detect the jib of jib detection unit put in place signal be activated time, maybe when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of supporting leg, after transit time T, read the level value of level sensing unit, obtain the first level value, and store the first level value.That the liquid level in hydraulic oil container is stable, thus can obtain level value more accurately in order to when reading level value like this.Wherein, level sensing unit can be the arbitrary shown level sensing unit 4 in Fig. 1 ~ 3.
Wherein, wherein, if before power-off, any one in jib and supporting leg is used again, and all again will read the level value of level sensing unit, therefore before controller power-off, described method also comprises:
When again detect the supporting leg of supporting leg detection unit put in place signal be activated time, or when again detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of supporting leg, again read the level value of level sensing unit, and upgrade the first level value stored.Can ensure that support oil cylinder does not have any action when reading the first level value like this, the liquid level in hydraulic oil container can not be had influence on.Thus ensure that the first level value read is correct.
Or before controller power-off, described method also comprises:
Judge whether to arrive level value update time according to the level value revision cycle of presetting, when arriving level value update time, again reading the level value of level sensing unit, and upgrading the first level value stored.Thus can ensure when power-off, the first level value of storage is up-to-date.
Optionally, described in step 104 when controller powers on next time, read the level value of level sensing unit, the step obtaining the second level value comprises:
When controller powers on next time, judge whether jib draws according to the signal of jib detection unit, supporting leg testing module is also for judging according to the signal of supporting leg management apparatus whether supporting leg has drawn in or forbidden work.Illustratively, before reading second level value, first carry out detecting whether the jib signal that puts in place is activated, and whether detection supporting leg enable signal is in low level, when the jib signal that puts in place is activated, and detect supporting leg enable signal when being in low level, determine that jib has drawn in and supporting leg forbids work.
When detecting that jib draws in, and when supporting leg has drawn in or forbidden work, reading the level value of level sensing unit, obtaining the second level value.This be in order to determined before reading second level value this time power on and in time period once between power-off jib and supporting leg do not operated, thus avoid the impact on hydraulic oil container liquid level, to ensure that the second level value read is accurately.
Optionally, the step whether judgement first level value described in step 105 and the difference of the second level value meet the alert if preset comprises:
Obtain the difference of the first level value and the second level value.Wherein, because the first level value is constantly updated before power-off, therefore this first level value is last the first level value upgraded before power-off.Difference i.e. first level value of the first level value and the second level value deducts the difference of the second level value gained.
Difference and the alarm threshold value preset are compared.This alarm threshold value can be arranged according to actual needs, does not limit here.
When difference is greater than alarm threshold value, can thinks and judge hydraulic oil container leakage of oil to meet alert if.
When difference is less than or equal to alarm threshold value, can thinks that this difference is that hydraulic oil in hydraulic oil container fluctuates normally, judge not meet alert if.
When judging to meet alert if to this alarm unit output alarm signal.This alarm unit can be the arbitrary shown alarm units 5 in Fig. 1 ~ 3.
The invention provides a kind of method detecting hydraulic oil leakage of oil, by judging whether jib draws according to the signal of jib detection unit; When determining that jib draws in, judge whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus; When determining that supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtaining the first level value, and store the first level value; When controller powers on next time, read the level value of level sensing unit, obtain the second level value; Judge whether the difference of the first level value and the second level value meets the alert if preset; When meeting alert if, output alarm signal is to alarm unit.As can be seen here; the level value of the hydraulic oil container before pump truck shutdown can be obtained exactly; thus the level value of hydraulic oil container before shutting down according to pump truck and the level value of hydraulic oil container when powering on next time judge hydraulic oil container whether leakage of oil, thus can realize detecting pump truck hydraulic oil whether leakage of oil between down period.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. detect a device for hydraulic oil leakage of oil, it is characterized in that, be applied to the controller on vehicle, described device comprises:
According to the signal of jib detection unit, jib testing module, judges whether jib draws in;
Supporting leg testing module, is connected with described jib testing module, for when determining that described jib draws in, judges whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus;
Level monitoring module, being connected with described jib testing module and described supporting leg testing module, for when determining that described supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtain the first level value, and store described first level value;
Described level monitoring module, also for when described controller powers on next time, reads the level value of described level sensing unit, obtains the second level value;
Determination module, with described level monitoring model calling, for judging whether the difference of described first level value and described second level value meets the alert if preset;
Communication module, is connected with described determination module, and for when meeting described alert if, output alarm signal is to alarm unit.
2. device according to claim 1, is characterized in that, described jib testing module comprises:
Jib puts in place signal monitoring module, and the jib for detecting described jib detection unit puts in place signal;
Jib draws determination module in, to put in place signal monitoring model calling with described jib, for when detect the jib of described jib detection unit put in place signal be activated time, determine that described jib draws in.
3. device according to claim 1, is characterized in that, described supporting leg management apparatus is supporting leg detection unit, and described supporting leg testing module comprises:
Supporting leg puts in place signal monitoring module, and for when determining that described jib draws in, the supporting leg detecting described supporting leg detection unit puts in place signal;
Supporting leg draws determination module in, to put in place signal monitoring model calling with described supporting leg, for when detect the supporting leg of described supporting leg detection unit put in place signal be activated time, determine that described supporting leg draws in.
4. device according to claim 1, is characterized in that, described supporting leg management apparatus is the enable control unit of supporting leg, and described supporting leg testing module comprises:
Supporting leg enable signal monitoring modular, for when determining that described jib draws in, detects the supporting leg enable signal of the enable control unit of described supporting leg;
Supporting leg working state determination module, is connected with described supporting leg enable signal monitoring modular, for when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of described supporting leg, determines that described supporting leg forbids work.
5. device according to claim 1, is characterized in that, described level monitoring module comprises:
Read module, for when detect the jib of described jib detection unit put in place signal be activated time, maybe when detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of described supporting leg, the level value of described level sensing unit is read after transit time T, obtain described first level value, and store described first level value;
Memory module, is connected with described read module, for storing described first level value.
6. device according to claim 5, is characterized in that,
Described read module also for, before described controller power-off, when again detect the supporting leg of described supporting leg detection unit put in place signal be activated time, or when again detecting that trailing edge appears in the supporting leg enable signal of the enable control unit of described supporting leg, again read the level value of described level sensing unit;
Described memory module, also for upgrading described first level value stored.
7. device according to claim 1, is characterized in that, described device also comprises:
More new module, be connected with described level monitoring module, described jib testing module and described supporting leg testing module, for before described controller power-off, judge whether to arrive level value update time according to the level value revision cycle of presetting, when arrival level value update time, again read the level value of described level sensing unit, and upgrade described first level value that described level monitoring module stored.
8. device according to claim 1, is characterized in that,
According to the signal of jib detection unit, described jib testing module, also for when described controller powers on next time, judges whether jib draws in;
Described supporting leg testing module, also for judging according to the signal of supporting leg management apparatus whether supporting leg has drawn in or forbidden work;
For working as, described level monitoring module, detects that described jib draws in, and when supporting leg has drawn in or forbidden work, reads the level value of described level sensing unit, obtain the second level value.
9. the device according to claim 6 or 7, is characterized in that, described determination module comprises:
Difference calculating module, for obtaining the difference of described first level value and described second level value, described first level value is last the first level value upgraded before power-off;
Comparison module, is connected with described difference calculating module, for described difference and the alarm threshold value preset being compared;
Warning determination module, is connected with described comparison module, for when described difference is greater than described alarm threshold value, judges to meet alert if;
Described warning determination module, also for when described difference is less than or equal to described alarm threshold value, judges not meet alert if.
10. detect a method for hydraulic oil leakage of oil, it is characterized in that, be applied to the controller on vehicle, described method comprises:
Judge whether jib draws according to the signal of jib detection unit;
When determining that described jib draws in, judge whether supporting leg has drawn in or forbidden work according to the signal of supporting leg management apparatus;
When determining that described supporting leg has drawn in or forbidden operating conditions, reading the level value of the level sensing unit of hydraulic oil container, obtaining the first level value, and store described first level value;
When described controller powers on next time, read the level value of described level sensing unit, obtain the second level value;
Judge whether the difference of described first level value and described second level value meets the alert if preset;
When meeting described alert if, output alarm signal is to alarm unit.
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