CN111412199A - Fault detection method for hydraulic equipment - Google Patents
Fault detection method for hydraulic equipment Download PDFInfo
- Publication number
- CN111412199A CN111412199A CN202010338995.8A CN202010338995A CN111412199A CN 111412199 A CN111412199 A CN 111412199A CN 202010338995 A CN202010338995 A CN 202010338995A CN 111412199 A CN111412199 A CN 111412199A
- Authority
- CN
- China
- Prior art keywords
- oil
- hydraulic
- fault
- valve
- fault detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of hydraulic equipment, aims to solve the problems of low efficiency and poor comprehensiveness of fault detection of the conventional hydraulic equipment, and provides a fault detection method of the hydraulic equipment, which comprises the following steps: step 1, sequentially detecting whether each element on an oil inlet path has a fault according to an oil inlet direction, stopping fault detection after detecting that a certain element has a fault, and entering step 2 if no element has a fault; step 2, detecting whether the hydraulic oil cylinder has a fault, if so, stopping fault detection, otherwise, entering the step 3; and 3, sequentially detecting whether each element on the oil return path has a fault according to the oil return direction, and stopping fault detection when a certain element is detected to have a fault. The invention improves the efficiency and comprehensiveness of fault detection, ensures the normal operation of hydraulic equipment, and is suitable for a hydraulic system.
Description
Technical Field
The invention relates to the technical field of hydraulic equipment, in particular to a fault detection method of the hydraulic equipment.
Background
Advanced technologies are presented day after day, and the development of modern enterprises, such as informatization, automation and big data, is more and more powerful. Hydraulic equipment in each industrial enterprise is also in the rise along with automation, and in order to ensure the normal operation of the hydraulic equipment, maintenance and fault detection are often required to be carried out on the hydraulic equipment. However, the fault of the hydraulic equipment has various reasons of concealment, complexity and the same phenomenon, and further technical problems of fault diagnosis are caused.
In the prior art, generally, a worker with quite abundant experience carries out fault detection on hydraulic equipment, the mode needs that the worker needs to be very familiar with a hydraulic principle, the requirement on the worker is high, even if the worker has abundant experience, a good fault detection thought does not exist during fault detection, the time consumption is quite long, the efficiency is low, the comprehensiveness of element detection cannot be guaranteed, and huge economic loss is easily caused for industrial enterprises.
Disclosure of Invention
The invention aims to solve the problems of low efficiency and poor comprehensiveness of fault detection of the conventional hydraulic equipment and provides a fault detection method of the hydraulic equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows: a fault detection method of a hydraulic apparatus, the hydraulic apparatus comprising: oil tank, hydraulic cylinder, advance oil circuit and return oil circuit, the oil tank is connected with hydraulic cylinder's stopper chamber through advancing oil circuit, hydraulic cylinder's pole chamber is connected with the oil tank through returning oil circuit, including following step:
step 1, sequentially detecting whether each element on an oil inlet path has a fault according to an oil inlet direction, stopping fault detection after detecting that a certain element has a fault, and entering step 2 if no element has a fault;
step 2, detecting whether the hydraulic oil cylinder has a fault, if so, stopping fault detection, otherwise, entering the step 3;
and 3, sequentially detecting whether each element on the oil return path has a fault according to the oil return direction, and stopping fault detection when a certain element is detected to have a fault.
Further, for the realization to the detection of oil inlet way upper element, the last element of oil inlet way includes: filter, hydraulic oil pump, check valve, switching-over valve and oil feed rubber tube, the input and the oil tank of filter are connected, and the output of filter loops through hydraulic oil pump and check valve and is connected with the oil inlet of switching-over valve, and the first work hydraulic fluid port of switching-over valve passes through the oil feed rubber tube to be connected with hydraulic cylinder's stopper chamber, step 1 includes:
detecting whether the filter breaks down or not, if so, stopping fault detection, otherwise, detecting whether the hydraulic oil pump breaks down or not, if so, stopping fault detection, otherwise, detecting whether the check valve breaks down or not, if so, stopping fault detection, otherwise, detecting whether an oil path between an oil inlet of the reversing valve and a first working oil port breaks down or not, if so, stopping fault detection, otherwise, detecting whether an oil inlet rubber tube breaks down or not, if so, stopping fault detection, and otherwise, entering the step 3.
Further, for guaranteeing the safe operation of hydraulic equipment, the component on the oil inlet way still includes: the output end of the hydraulic oil pump is connected with the oil tank through the overflow valve, and the step 1 further comprises the following steps:
and when the hydraulic oil pump is not detected to be in fault, detecting whether the overflow valve is in fault or not, if so, stopping fault detection, and otherwise, detecting whether the one-way valve is in fault or not.
Further, for controlling the position stability of the hydraulic oil cylinder, the components on the oil inlet path further comprise: the hydraulic control system comprises a first hydraulic control valve, wherein a first working oil port of a reversing valve sequentially passes through the first hydraulic control valve and an oil inlet rubber pipe to be connected with a plug cavity of a hydraulic oil cylinder, and the step 1 further comprises the following steps:
and when the fault of the oil path between the oil inlet of the reversing valve and the first working oil port is not detected, detecting whether the first hydraulic control valve has the fault or not, if so, stopping fault detection, and otherwise, detecting whether the oil inlet rubber tube has the fault or not.
Further, in order to control the operating speed of the hydraulic oil cylinder, the components on the oil inlet path further comprise: first choke valve, first liquid accuse valve loop through first choke valve and oil feed rubber tube are connected with hydraulic cylinder's stopper chamber, step 1 still includes:
when the first hydraulic control valve is not detected to be out of order, whether the first throttling valve is out of order or not is detected, if yes, the fault detection is stopped, and if not, whether the oil inlet rubber pipe is out of order or not is detected.
Further, in order to ensure the unidirectional flow of the oil, the first throttling valve is a one-way throttling valve.
Further, in order to realize the detection of the element on the oil return path, the element on the oil return path includes: the hydraulic cylinder is characterized by comprising a reversing valve and an oil return rubber tube, wherein a rod cavity of the hydraulic cylinder is connected with an oil return port of the reversing valve through the oil return rubber tube, a second working oil port of the reversing valve is connected with an oil tank, and the step 3 comprises the following steps:
and detecting whether the oil return rubber pipe breaks down or not, if so, stopping fault detection, otherwise, detecting whether an oil way between an oil return port of the reversing valve and the second working oil port breaks down or not, and if so, stopping fault detection.
Further, in order to control the operation speed of the hydraulic oil cylinder, the element on the oil return path further comprises: and (3) a second hydraulic control valve, wherein a rod cavity of the hydraulic oil cylinder is connected with an oil return port of the reversing valve through the second hydraulic control valve, and the step 3 further comprises the following steps of:
and when the oil return rubber pipe fails, detecting whether the second hydraulic control valve fails, if so, stopping fault detection, otherwise, detecting whether an oil way between an oil return port of the reversing valve and the second working oil port fails.
Further, in order to control the operation speed of the hydraulic oil cylinder, the element on the oil return path further comprises: and (3) a second throttle valve, wherein the rod cavity of the hydraulic oil cylinder is connected with the second hydraulic control valve through the second throttle valve, and the step further comprises the following steps:
and when the oil return rubber pipe is not detected to be in fault, detecting whether the second throttling valve is in fault or not, if so, stopping fault detection, and otherwise, detecting whether the second hydraulic control valve is in fault or not.
The invention has the beneficial effects that: the fault detection method of the hydraulic equipment detects whether each element in the hydraulic equipment has a fault or not in sequence through a clear logic thought, and stops a detection process when any element is detected to have a fault, so that the efficiency and the comprehensiveness of fault detection are improved, and the normal operation of the hydraulic equipment is ensured.
Drawings
Fig. 1 is a schematic flow chart of a fault detection method for a hydraulic apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a hydraulic apparatus according to an embodiment of the present invention;
description of reference numerals:
1-a filter; 2-a hydraulic oil pump; 3-a reversing valve; 4-a hydraulic control valve; 4.1-a first hydraulic control valve; 4.2-second throttle valve; 5-one-way throttle valve; 5.1-one-way valve of the first throttle valve; 5.2-first throttle valve; 5.3-second throttle valve; 5.4-one-way valve of second throttle valve; 6-overflow valve; 7-a drive device; 8-an oil tank; 9-plug cavity of hydraulic oil cylinder; 10-rod cavity of hydraulic oil cylinder; 11-oil inlet rubber tube; 12-oil return rubber tube.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The fault detection method of the hydraulic apparatus of the present invention includes: the oil tank is connected with a plug cavity of the hydraulic oil cylinder through the oil inlet path, and a rod cavity of the hydraulic oil cylinder is connected with the oil tank through the oil return path, as shown in figure 1, the oil tank comprises the following steps:
s1, sequentially detecting whether each element on an oil inlet path has a fault according to an oil inlet direction, stopping fault detection after a certain element is detected to have a fault, and entering a step 2 if no element is detected to have a fault;
s2, detecting whether the hydraulic oil cylinder has a fault, if so, stopping fault detection, and otherwise, entering the step 3;
and S3, sequentially detecting whether each element on the oil return path has a fault according to the oil return direction, and stopping fault detection when a certain element is detected to have a fault.
Specifically, to ensure the normal work of the hydraulic oil cylinder, the unobstructed state of each element in the hydraulic equipment must be corresponded, namely the unobstructed element must be unobstructed, the unobstructed element must not be unobstructed, once the relationship is broken, a hydraulic fault is generated, and further the hydraulic oil cylinder stops working. Meanwhile, the hydraulic equipment element fault can be rapidly judged by means of a pressure meter and an infrared thermometer in the detection process, if the unobstructed element is not unobstructed, the temperature of the element can rise, and then the element is judged to be a fault element, and if the unobstructed element is not unobstructed, the pressure of the pressure measuring device behind the element is not displayed, and then the element is judged to be the fault element.
Examples
As shown in fig. 2, the hydraulic apparatus according to the embodiment of the present invention includes: the oil tank is connected with a plug cavity of the hydraulic oil cylinder through the oil inlet path, and a rod cavity of the hydraulic oil cylinder is connected with the oil tank through the oil return path.
Wherein, the component on the oil inlet road includes: the hydraulic oil pump comprises a filter 1, a hydraulic oil pump 2, an overflow valve 6, a check valve 12, a reversing valve 3, a first hydraulic control valve 4.1, a first throttle valve 5.2 and an oil inlet rubber tube 11, wherein the input end of the filter 1 is connected with an oil tank 8, the output end of the filter 1 is connected with an oil inlet of the reversing valve 3 sequentially through the hydraulic pump 2 and the check valve 12, a first working oil port of the reversing valve 3 is connected with a plug cavity 9 of a hydraulic oil cylinder sequentially through the first hydraulic control valve 4.1, the first throttle valve 5.2 and the oil inlet rubber tube 11, and when the hydraulic equipment normally works, the oil inlet of the reversing valve 3 is connected with the first working oil.
The element on the oil return path includes: the hydraulic cylinder is characterized by comprising an oil return rubber tube 12, a second throttling valve 5.3, a second hydraulic control valve 4.2 and a reversing valve 3, wherein a rod cavity 10 of the hydraulic cylinder is connected with an oil return port of the reversing valve 3 sequentially through the oil return rubber tube 12, the second throttling valve 5.3 and the second hydraulic control valve 4.2, a second working oil port of the reversing valve 3 is connected with an oil tank, and when the hydraulic equipment works normally, the oil return port of the reversing valve 3 is connected with the second working oil port.
When the hydraulic oil cylinder works normally, the work flow of the hydraulic equipment and the smooth condition of each element are as follows:
the filter 1 is unobstructed, and the hydraulic oil pump 2 generates pressure energy under the driving of the driving device 7 under the condition that the oil suction cavity is not communicated with the oil discharge cavity, so as to drive oil in the oil tank to enter an oil inlet path; the check valve 12 is unobstructed, the overflow valve 6 is obstructed, the oil inlet of the reversing valve 3 is unobstructed with the first working oil port, and oil enters the first hydraulic control valve 4.1; the first hydraulic control valve 4.1 is unblocked, the first throttle valve 5.2 is unblocked, the oil inlet rubber tube 11 is unblocked, and oil enters the plug cavity 9 of the hydraulic oil cylinder;
the oil return rubber pipe 12 is unblocked, the second throttle valve 5.3 is unblocked, the second hydraulic control valve 4.2 is unblocked, oil enters the oil return opening of the reversing valve 3, the space between the oil return opening of the reversing valve 3 and the second working oil opening is unblocked, and the oil flows back to the oil tank 8.
The fault detection process of the hydraulic equipment comprises the following steps:
detecting whether the filter 1 breaks down or not, if the filter 1 is blocked, the oil cannot enter the hydraulic oil pump 2, and pressure working oil cannot be generated; if the filter 1 fails, the filtering effect is lost, the polluted oil can damage a hydraulic element or block an oil hole, the hydraulic oil cylinder cannot work normally due to the failure of the filter 1, and if the failure of the filter 1 is detected, the failure detection is stopped, and the filter 1 is determined to be in failure; whether the filter 1 is out of order can be judged by the temperature.
If the filter 1 is normal, detecting whether the hydraulic oil pump 2 is in fault, if the oil suction cavity and the oil discharge cavity of the hydraulic oil pump 2 are not communicated, the oil cannot be discharged from the hydraulic oil pump, and further the hydraulic oil pump cannot work normally, and if the hydraulic oil pump 2 is detected to be in fault, stopping fault detection and determining that the hydraulic oil pump 1 is in fault; wherein, whether hydraulic oil pump 2 breaks down can be judged through the height of its temperature.
If the filter 1 and the hydraulic oil pump 2 are normal, detecting whether the overflow valve 6 is in fault, if the overflow valve 6 is smooth, the oil overflows from the position and returns to the oil tank 8, so that pressure oil cannot enter a plug cavity 9 of the hydraulic oil cylinder, the hydraulic oil cylinder cannot normally work, and if the overflow valve 6 is detected to be in fault, stopping fault detection and judging that the overflow valve 6 is in fault; whether the overflow valve 6 has a fault or not can be judged according to the pressure of the overflow valve.
If the filter 1, the hydraulic oil pump 2 and the overflow valve 6 are normal, detecting whether the one-way valve 12 is in fault, if the one-way valve 12 is not communicated, causing pressure-holding oil to flow back to the oil tank 8 from the overflow valve 6, causing the pressure oil to be incapable of entering a plug cavity 9 of the hydraulic oil cylinder, and the hydraulic oil cylinder to be incapable of working normally, and if the one-way valve 12 is detected to be in fault, stopping fault detection and determining that the one-way valve 12 is in fault; wherein, whether the check valve 12 has a fault can be judged by the pressure thereof.
If the filter 1, the hydraulic oil pump 2, the overflow valve 6 and the check valve 12 are normal, detecting whether the reversing valve 3 is in fault, if the oil inlet of the reversing valve 3 is not communicated with the first working oil port, causing pressure-holding oil to flow back to the oil tank 8 from the overflow valve 6, causing the pressure oil to be incapable of entering the plug cavity 9 of the hydraulic oil cylinder, and the hydraulic oil cylinder to be incapable of working normally, if the oil inlet channel of the reversing valve 3 is detected to be in fault, stopping fault detection, and determining that the oil inlet channel of the reversing valve 3 is in fault; wherein, whether the oil feed passageway of switching-over valve 3 breaks down the size of its pressure of accessible and judges.
If the filter 1, the hydraulic oil pump 2, the overflow valve 6, the check valve 12 and the reversing valve 3 are normal, detecting whether the first hydraulic control valve 4.1 is in fault, if the first hydraulic control valve 4.1 is not communicated, causing the pressure-holding oil to flow back to the oil tank 8 from the overflow valve 6, causing the pressure oil to be incapable of entering the plug cavity 9 of the hydraulic oil cylinder, and the hydraulic oil cylinder to be incapable of working normally, if the first hydraulic control valve 4.1 is detected to be in fault, stopping fault detection, and determining that the first hydraulic control valve 4.1 is in fault; wherein, whether the first pilot control valve 4.1 breaks down can be judged by the pressure thereof.
If the filter 1, the hydraulic oil pump 2, the overflow valve 6, the check valve 12, the reversing valve 3 and the first hydraulic control valve 4.1 are normal, whether the first throttle valve 5.2 is in fault is detected, if the first throttle valve 5.2 is not communicated, pressure-holding oil flows back to the oil tank 8 from the overflow valve 6, pressure oil cannot enter a plug cavity 9 of the hydraulic oil cylinder, the hydraulic oil cylinder cannot normally work, if the first throttle valve 5.2 is detected to be in fault, fault detection is stopped, and the first throttle valve 5.2 is judged to be in fault; wherein, whether the first throttle valve 5.2 is in failure can be judged by the pressure thereof.
If the filter 1, the hydraulic oil pump 2, the overflow valve 6, the check valve 12, the reversing valve 3, the first hydraulic control valve 4.1 and the first throttle valve 5.2 are normal, detecting whether the oil inlet rubber hose 11 leaks oil, if the oil inlet rubber hose 11 leaks oil seriously, causing that pressure oil cannot enter a plug cavity 9 of a hydraulic oil cylinder, the hydraulic oil cylinder cannot work normally, and if the oil inlet rubber hose 11 is detected to be out of order, stopping fault detection and judging that the oil inlet rubber hose 11 is out of order; wherein, whether oil feed rubber tube 11 breaks down can be judged through the size of its pressure.
If all elements on an oil inlet path are normal, namely the filter 1, the hydraulic oil pump 2, the overflow valve 6, the check valve 12, the reversing valve 3, the first hydraulic control valve 4.1, the first throttle valve 5.2 and the oil inlet rubber tube 11 are normal, detecting whether a plug cavity 9 of a hydraulic oil cylinder has a fault, if the plug cavity 9 of the hydraulic oil cylinder has seal loss, the hydraulic oil cylinder cannot normally work due to the fact that oil blowby between the plug cavity 9 and a rod cavity 10 of the hydraulic oil cylinder cannot build pressure, and if the plug cavity 9 of the hydraulic oil cylinder is detected to have a fault, stopping fault detection and determining that the plug cavity 9 of the hydraulic oil cylinder has a fault; whether the plug cavity 9 of the hydraulic oil cylinder breaks down or not can be judged through the pressure of the plug cavity.
If all elements on the oil inlet path and the plug cavity 9 of the hydraulic oil cylinder are normal, detecting whether the rod cavity 10 of the hydraulic oil cylinder has a fault, if the mechanical load of the rod cavity 10 of the hydraulic oil cylinder exceeds the standard, causing the hydraulic oil cylinder to be incapable of working normally, if the rod cavity 10 of the hydraulic oil cylinder has a fault, stopping fault detection, and determining that the rod cavity 10 of the hydraulic oil cylinder has a fault; wherein, whether the rod cavity 10 of the hydraulic oil cylinder has a fault can be judged by the pressure of the rod cavity.
If all elements and the hydraulic oil cylinder on the oil inlet path are normal, detecting whether the oil return rubber pipe 12 leaks oil, if the oil return rubber pipe 12 leaks oil seriously, the hydraulic oil cylinder cannot work normally because an effective loop is not formed in the system, and if the oil return rubber pipe 12 is detected to be out of order, stopping fault detection and judging that the oil return rubber pipe 12 is out of order; wherein, whether the oil return rubber tube 12 breaks down can be judged by the pressure.
If all elements, the hydraulic oil cylinder and the oil return rubber pipe 12 on the oil inlet path are normal, detecting whether the second throttling valve 5.3 has a fault, if the second throttling valve 5.3 is not communicated, the hydraulic oil cylinder cannot work normally because an effective loop is not formed in the system, and if the second throttling valve 5.3 has a fault, stopping fault detection and judging that the second throttling valve 5.3 has a fault; wherein, whether the second throttle valve 5.3 is in failure can be judged by the temperature thereof.
If all elements on the oil inlet path, the hydraulic oil cylinder, the oil return rubber tube 12 and the second throttle valve 5.3 are normal, whether the second hydraulic control valve 4.2 has a fault is detected, if the second hydraulic control valve 4.2 is not communicated, the hydraulic oil cylinder cannot normally work due to the fact that an effective loop is not formed in the system, if the second hydraulic control valve 4.2 has a fault, fault detection is stopped, and the second hydraulic control valve 4.2 has a fault is judged; wherein, whether the second pilot control valve 4.2 breaks down can be judged by the temperature.
If all elements on the oil inlet path, the hydraulic oil cylinder, the oil return rubber tube 12, the second throttle valve 5.3 and the second hydraulic control valve 4.2 are normal, whether an oil path between an oil return port of the reversing valve 3 and the second working oil port is in fault is detected, if the situation that the oil path between the oil return port of the reversing valve 3 and the second working oil port is not communicated is detected, the hydraulic oil cylinder cannot normally work due to the fact that oil is not returned, if the situation that the oil path between the oil return port of the reversing valve 3 and the second working oil port is in fault is detected, fault detection is stopped, and the situation that an oil return channel of the reversing valve 3 is in fault is; wherein, whether the oil return passage of the reversing valve 3 breaks down can be judged by the temperature.
Claims (9)
1. A fault detection method of a hydraulic apparatus, the hydraulic apparatus comprising: oil tank, hydraulic cylinder, advance oil circuit and return oil circuit, the oil tank is connected with hydraulic cylinder's stopper chamber through advancing oil circuit, hydraulic cylinder's pole chamber is connected with the oil tank through returning oil circuit, its characterized in that includes following step:
step 1, sequentially detecting whether each element on an oil inlet path has a fault according to an oil inlet direction, stopping fault detection after detecting that a certain element has a fault, and entering step 2 if no element has a fault;
step 2, detecting whether the hydraulic oil cylinder has a fault, if so, stopping fault detection, otherwise, entering the step 3;
and 3, sequentially detecting whether each element on the oil return path has a fault according to the oil return direction, and stopping fault detection when a certain element is detected to have a fault.
2. The method for detecting a failure of a hydraulic apparatus according to claim 1, wherein the component on the oil feed path includes: filter, hydraulic oil pump, check valve, switching-over valve and oil feed rubber tube, the input and the oil tank of filter are connected, and the output of filter loops through hydraulic oil pump and check valve and is connected with the oil inlet of switching-over valve, and the first work hydraulic fluid port of switching-over valve passes through the oil feed rubber tube to be connected with hydraulic cylinder's stopper chamber, step 1 includes:
detecting whether the filter breaks down or not, if so, stopping fault detection, otherwise, detecting whether the hydraulic oil pump breaks down or not, if so, stopping fault detection, otherwise, detecting whether the check valve breaks down or not, if so, stopping fault detection, otherwise, detecting whether an oil path between an oil inlet of the reversing valve and a first working oil port breaks down or not, if so, stopping fault detection, otherwise, detecting whether an oil inlet rubber tube breaks down or not, if so, stopping fault detection, and otherwise, entering the step 3.
3. The method for detecting a failure of a hydraulic apparatus according to claim 2, wherein the component on the oil feed path further comprises: the output end of the hydraulic oil pump is connected with the oil tank through the overflow valve, and the step 1 further comprises the following steps:
and when the hydraulic oil pump is not detected to be in fault, detecting whether the overflow valve is in fault or not, if so, stopping fault detection, and otherwise, detecting whether the one-way valve is in fault or not.
4. The method for detecting a failure of a hydraulic apparatus according to claim 2, wherein the component on the oil feed path further comprises: the hydraulic control system comprises a first hydraulic control valve, wherein a first working oil port of a reversing valve sequentially passes through the first hydraulic control valve and an oil inlet rubber pipe to be connected with a plug cavity of a hydraulic oil cylinder, and the step 1 further comprises the following steps:
and when the fault of the oil path between the oil inlet of the reversing valve and the first working oil port is not detected, detecting whether the first hydraulic control valve has the fault or not, if so, stopping fault detection, and otherwise, detecting whether the oil inlet rubber tube has the fault or not.
5. The method for detecting a failure of a hydraulic apparatus according to claim 4, wherein the component on the oil feed path further comprises: first choke valve, first liquid accuse valve loop through first choke valve and oil feed rubber tube are connected with hydraulic cylinder's stopper chamber, step 1 still includes:
when the first hydraulic control valve is not detected to be out of order, whether the first throttling valve is out of order or not is detected, if yes, the fault detection is stopped, and if not, whether the oil inlet rubber pipe is out of order or not is detected.
6. The fault detection method of a hydraulic apparatus according to claim 5, wherein the first throttle valve is a one-way throttle valve.
7. The hydraulic apparatus fault detection method according to claim 2, wherein the component on the oil return path includes: the hydraulic cylinder is characterized by comprising a reversing valve and an oil return rubber tube, wherein a rod cavity of the hydraulic cylinder is connected with an oil return port of the reversing valve through the oil return rubber tube, a second working oil port of the reversing valve is connected with an oil tank, and the step 3 comprises the following steps:
and detecting whether the oil return rubber pipe breaks down or not, if so, stopping fault detection, otherwise, detecting whether an oil way between an oil return port of the reversing valve and the second working oil port breaks down or not, and if so, stopping fault detection.
8. The hydraulic apparatus fault detection method according to claim 7, wherein the element on the oil return path further comprises: and (3) a second hydraulic control valve, wherein a rod cavity of the hydraulic oil cylinder is connected with an oil return port of the reversing valve through the second hydraulic control valve, and the step 3 further comprises the following steps of:
and when the oil return rubber pipe fails, detecting whether the second hydraulic control valve fails, if so, stopping fault detection, otherwise, detecting whether an oil way between an oil return port of the reversing valve and the second working oil port fails.
9. The hydraulic apparatus fault detection method according to claim 8, wherein the element on the oil return path further comprises: and (3) a second throttle valve, wherein the rod cavity of the hydraulic oil cylinder is connected with the second hydraulic control valve through the second throttle valve, and the step further comprises the following steps:
and when the oil return rubber pipe is not detected to be in fault, detecting whether the second throttling valve is in fault or not, if so, stopping fault detection, and otherwise, detecting whether the second hydraulic control valve is in fault or not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338995.8A CN111412199A (en) | 2020-04-26 | 2020-04-26 | Fault detection method for hydraulic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338995.8A CN111412199A (en) | 2020-04-26 | 2020-04-26 | Fault detection method for hydraulic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111412199A true CN111412199A (en) | 2020-07-14 |
Family
ID=71490135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010338995.8A Pending CN111412199A (en) | 2020-04-26 | 2020-04-26 | Fault detection method for hydraulic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111412199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321062A (en) * | 2021-12-24 | 2022-04-12 | 浙江华章科技有限公司 | Oil station hydraulic station pressure prediction and maintenance system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06300013A (en) * | 1993-04-14 | 1994-10-25 | Honda Motor Co Ltd | Detection of failure in fluid pressure system and fluid pressure brake system for vehicle |
| KR20070106207A (en) * | 2006-04-28 | 2007-11-01 | 주식회사 만도 | Failure detection and compensation method of oil pressure circuit |
| CN102338137A (en) * | 2011-08-25 | 2012-02-01 | 中联重科股份有限公司 | Method for detecting hydraulic valve, controller and device, method and device for detecting fault of hydraulic circuit and fault processing system |
| CN102606559A (en) * | 2012-02-22 | 2012-07-25 | 安徽金达利液压有限公司 | Hydraulic fault detector |
| CN204371832U (en) * | 2014-11-24 | 2015-06-03 | 天津港物流发展有限公司 | With the front handling mobile crane hydraulic system of Hydraulic pump fault feeler mechanism |
| CN104748983A (en) * | 2015-04-09 | 2015-07-01 | 句容五星机械制造有限公司 | Bulldozer steering fault detection method |
| CN105317766A (en) * | 2014-06-24 | 2016-02-10 | 扬州市飞龙气动液压设备有限公司 | Integrated hydraulic open-close machine |
| CN107387498A (en) * | 2017-08-23 | 2017-11-24 | 重庆红江机械有限责任公司 | ME Type B marine low-speed machine pressure accumulation block assembly function test methods |
| CN208534905U (en) * | 2018-04-12 | 2019-02-22 | 贵州开磷集团股份有限公司 | A kind of device for oil cylinder fault detection |
| US20200003237A1 (en) * | 2018-06-29 | 2020-01-02 | The Boeing Company | Fault prediction in hydraulic systems |
-
2020
- 2020-04-26 CN CN202010338995.8A patent/CN111412199A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06300013A (en) * | 1993-04-14 | 1994-10-25 | Honda Motor Co Ltd | Detection of failure in fluid pressure system and fluid pressure brake system for vehicle |
| KR20070106207A (en) * | 2006-04-28 | 2007-11-01 | 주식회사 만도 | Failure detection and compensation method of oil pressure circuit |
| CN102338137A (en) * | 2011-08-25 | 2012-02-01 | 中联重科股份有限公司 | Method for detecting hydraulic valve, controller and device, method and device for detecting fault of hydraulic circuit and fault processing system |
| CN102606559A (en) * | 2012-02-22 | 2012-07-25 | 安徽金达利液压有限公司 | Hydraulic fault detector |
| CN105317766A (en) * | 2014-06-24 | 2016-02-10 | 扬州市飞龙气动液压设备有限公司 | Integrated hydraulic open-close machine |
| CN204371832U (en) * | 2014-11-24 | 2015-06-03 | 天津港物流发展有限公司 | With the front handling mobile crane hydraulic system of Hydraulic pump fault feeler mechanism |
| CN104748983A (en) * | 2015-04-09 | 2015-07-01 | 句容五星机械制造有限公司 | Bulldozer steering fault detection method |
| CN107387498A (en) * | 2017-08-23 | 2017-11-24 | 重庆红江机械有限责任公司 | ME Type B marine low-speed machine pressure accumulation block assembly function test methods |
| CN208534905U (en) * | 2018-04-12 | 2019-02-22 | 贵州开磷集团股份有限公司 | A kind of device for oil cylinder fault detection |
| US20200003237A1 (en) * | 2018-06-29 | 2020-01-02 | The Boeing Company | Fault prediction in hydraulic systems |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321062A (en) * | 2021-12-24 | 2022-04-12 | 浙江华章科技有限公司 | Oil station hydraulic station pressure prediction and maintenance system |
| CN114321062B (en) * | 2021-12-24 | 2023-07-14 | 浙江华章科技有限公司 | Oil station hydraulic pressure station pressure prediction and maintenance system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103574991B (en) | Oil return control method for multi-compressor system | |
| CN206889394U (en) | A kind of hydraulic cylinder durability testing stand | |
| CN108953295B (en) | Pipe burst detection system and detection method for hydraulic motor endurance test | |
| US20220065273A1 (en) | Method for establishing hydraulic readiness, and hydraulic system | |
| WO2014000386A1 (en) | Hydraulic system, control method for hydraulic system and engineering machinery therewith | |
| CN105650061B (en) | The Position of Hydraulic Cylinder system for tracking and control method of a kind of tape jam self diagnosis | |
| CN111412199A (en) | Fault detection method for hydraulic equipment | |
| CN102767207B (en) | Excavator boom energy regenerating device and boom energy regenerating valve block thereof | |
| CN207018300U (en) | A kind of governor valve test system | |
| CN104533883B (en) | Hydraulic diagnostic device simulating fault of hydraulic system | |
| US11149508B2 (en) | Method and apparatus for continuously controlling a well flow rate | |
| CN104776086A (en) | Remanufactured oil cylinder performance detection platform | |
| CN107654426A (en) | A kind of drill jumbo and its impulsive control hydraulic system | |
| CN103038449A (en) | Control device for an extracting unit in the work face of a mine | |
| CN218956113U (en) | Pressing test system for heat exchanger | |
| CN101658926B (en) | Hydraulic control system of tundish water gap of continuous casting machine | |
| CN206221419U (en) | A kind of oil circuit control to pilot operated valve device implements the locking loop of individually control | |
| CN108087702A (en) | A kind of lubricating oil system | |
| CN206071847U (en) | A kind of buffer unit for pressure switch | |
| CN207673655U (en) | Tunneling machine hydraulic system pump valve diagnostic device | |
| CN105443373A (en) | Piston lubricating system of concrete cylinder, control method and device thereof and pumping equipment | |
| CN104030199A (en) | Forklift hydraulic system with bypass oil way throttling speed regulation loop | |
| CN105020188B (en) | Fully-hydraulic automatic control system and automatic scraper conveyor telescopic tail with same | |
| CN114412427A (en) | Gas lift and production integrated oil and gas exploitation system | |
| CN220726229U (en) | Pump pressure protection gate group of drilling pump and pump pressure protection system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200714 |
|
| RJ01 | Rejection of invention patent application after publication |