Method for monitoring wear state of oil distributor based on high-pressure oil pump and low-pressure oil pump

Abstract

The invention relates to the technical field of oil distributor abrasion monitoring, and discloses an oil distributor abrasion state monitoring method based on a high-low pressure oil pump, which comprises the following steps: S1, arranging an oil distributor to be monitored on a horizontal lathe, supplying oil to a hydraulic system through a duplex oil pump, and respectively taking charge of high pressure and low pressure; and the outlet pressure is adjusted and the oil supply path is switched through the electromagnetic relief valve. According to the method for monitoring the wear state of the oil distributor based on the high-low pressure oil pump, the wear state of the oil distributor can be rapidly and accurately evaluated by monitoring the operation parameters, the leakage rate and the wear particle concentration of the oil pump in real time, complex disassembly and inspection and a test bed are not needed, the maintenance cost and time are reduced, and the monitoring accuracy is improved by combining various monitoring means. The accuracy of wear state evaluation is improved, remote monitoring and diagnosis are supported, and maintenance measures can be taken in time.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel dispenser wear monitoring, and specifically to a method for monitoring the wear state of a fuel dispenser implemented based on a high and low pressure oil pump. Background Art

[0002] In a hydraulic system, a fuel dispenser is one of the key components, and its wear state directly affects the performance and service life of the system; after retrieval, the Chinese invention patent with the publication number CN116296958A discloses a friction and wear test method for a pitch-changing propeller shaft type fuel dispenser. By having different initial assembly clearance values between the oil distribution ring and the oil distribution shaft in the fuel dispenser test bench, different wear stages of the oil distribution ring are simulated. During the test process, the inner diameter and leakage amount of the oil distribution ring are regularly detected. Subsequently, the assembly clearance value between the oil distribution ring and the oil distribution shaft is calculated, and a relationship curve between the assembly clearance value and the leakage amount is established. Finally, the leakage amount of the oil distribution ring in the pitch-changing propeller device to be measured monitored in real time is substituted into the established relationship curve to realize the online monitoring of the wear amount of the oil distribution ring in the pitch-changing propeller device to be measured. It is possible to obtain the test data of the entire life cycle of the oil distribution ring as much as possible while shortening the life test cycle, establish the relationship curve between the assembly clearance value and the leakage amount of such shaft type fuel dispensers, and then accurately estimate the ultimate use situation of the fuel dispenser.

[0003] In the related art, the existing fuel dispenser wear monitoring methods generally monitor by regularly disassembling and measuring the inner diameter of the oil distribution ring and by understanding the leakage amount. The method of regularly disassembling and measuring the inner diameter and leakage amount of the oil distribution ring is not only time-consuming and laborious, but also cannot be monitored in real time; in addition, the method of evaluating the wear state by monitoring the relationship between the leakage amount and the assembly clearance, but these methods often require complex test benches and long-term durability tests; lack the function of monitoring the leakage liquid, so that the wear situation of the fuel dispenser cannot be fully understood, affecting the accuracy of fuel dispenser wear monitoring. Therefore, it is of great practical significance to develop a method that can monitor the wear state of the fuel dispenser in real time and efficiently. Summary of the Invention

[0004] (1) Technical Problem to be Solved

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for monitoring the wear state of a fuel dispenser implemented based on a high and low pressure oil pump. By real-time monitoring of the operating parameters, leakage amount and wear particle concentration of the oil pump, it can quickly and accurately evaluate the wear state of the fuel dispenser, and does not require complex disassembly and inspection and test benches, reducing the maintenance cost and time. By combining multiple monitoring means, the accuracy of wear state evaluation is improved, and remote monitoring and diagnosis are supported, facilitating timely maintenance measures. It solves the problem that the lack of multiple monitoring methods makes it impossible to fully understand the wear monitoring situation.

[0006] (2) Technical Solution

[0007] To achieve the above object, the present invention provides the following technical solutions: A method for monitoring the wear state of an oil distributor implemented based on high and low pressure oil pumps, comprising the following steps:

[0008] S1. Install the oil distributor to be monitored on a horizontal lathe, supply oil to the hydraulic system through a double-pump, each responsible for high pressure and low pressure, and adjust the outlet pressure and switch the oil supply circuit through an electromagnetic relief valve;

[0009] S2. Each double-pump outputs two paths of oil, which are respectively adjusted to 0.5 MPA and 9 MPA through electromagnetic relief valves, and the monitoring of the stable distance state, ahead state and astern state is carried out, and this cycle repeats;

[0010] S3. Flow sensors, pressure sensors and temperature sensors are arranged at each oil inlet, used to detect the flow rate, inlet oil pressure and temperature of each oil inlet, receive the leaked oil through an oil receiving device installed on the horizontal lathe, and detect its leakage amount;

[0011] S4. Monitor the received oil through the oil receiving device, and the monitoring methods include particle counting and contamination monitoring, ferrographic analysis monitoring, and on-line monitoring;

[0012] S5. Transmit the monitoring data to a remote monitoring terminal through the network to realize real-time remote monitoring and diagnosis of the wear state of the oil distributor.

[0013] Preferably, the stable distance state monitoring includes controlling the oil supply at 0.5 MPA through an electromagnetic relief valve, and returning the oil at 9 MPA to the oil tank. At this time, low-pressure oil is supplied to each port of the sealing pair through an electromagnetic reversing valve;

[0014] The ahead state monitoring includes, after 1 hour of stable distance state monitoring, adjusting the oil supply to 9 MPA through an electromagnetic relief valve, returning the oil at 0.5 MPA to the oil tank, and controlling the oil supply to ports A1 and A2 through an electromagnetic reversing valve, without supplying oil to ports B1 and B2;

[0015] The astern state monitoring includes, after 1 minute of ahead state monitoring, controlling the oil supply to ports B1 and B2 through an electromagnetic reversing valve, without supplying oil to ports A1 and A2.

[0016] Preferably, low-pressure oil injection is carried out through the double-pump to four oil injection ports to simulate the normal use state, monitor the oil output speed of the lubricating oil pump, and calculate the wear condition; then, high-pressure oil injection is carried out to the four oil injection ports in sequence to monitor the wear condition of a single position, and at the same time, by comparing with other monitoring points, the severity of wear at different positions.

[0017] Preferably, the particle counting for contamination monitoring includes monitoring the number and size distribution of particles in the oil by an automatic particle counter to evaluate the cleanliness and wear degree of the oil;

[0018] The ferrographic analysis monitoring separates and analyzes the wear particles in the oil by using ferrographic detection technology, and judges the wear type and degree through the morphology, size and composition of the wear particles;

[0019] The on-line monitoring adopts an on-line monitoring method based on optical method or electromagnetic induction to detect the size and number of wear particles in real time.

[0020] Preferably, the oil receiving device includes an oil receiving tank installed on a horizontal lathe, and a feeding hopper is fixedly connected above the oil receiving tank through a bracket;

[0021] The bottom of the oil receiving tank is fixedly communicated with a circulation pipe for discharging the oil inside the oil receiving tank to the hydraulic system, and a filter for treating the oil is installed on the circulation pipe, and a detection mechanism for sampling and detecting the oil is arranged on the oil receiving tank.

[0022] Preferably, a drainage pipe is fixedly communicated with the discharge pipe at the bottom of the feeding hopper, and the initial end of the drainage pipe is arranged to be inclined upward;

[0023] A material blocking component for blocking the discharge end at the bottom of the feeding hopper is arranged inside the oil receiving tank.

[0024] Preferably, the material blocking component includes a U-shaped frame fixed to the inner wall of the oil receiving tank, an L-shaped rod is slidably connected inside the U-shaped frame, one end of the L-shaped rod is fixedly connected with a baffle for blocking the discharge end at the bottom of the feeding hopper, and a first spring for resetting and extruding the L-shaped rod is fixedly connected inside the U-shaped frame.

[0025] Preferably, the detection mechanism includes a material receiving member, an oil detection module, and a driving member for switching the material receiving member back and forth between the oil detection module and the drainage pipe.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention provides a monitoring method for the wear state of a distributor realized based on high and low pressure oil pumps, and has the following beneficial effects:

[0028] 1. The present invention can be used for the tests of various types of fuel distributors. An electromagnetic overflow valve is connected to the pump outlet to adjust the outlet pressure of the pump, that is, to adjust the opening degree of the valve port of the electromagnetic overflow valve, so as to adjust the output pressure of the pump to meet the working requirements. Through the adjustment of the electromagnetic reversing valve, the requirement of simulated pitch adjustment can be achieved. By real-time monitoring of the operating parameters of the oil pump, the leakage amount and the wear particle concentration, the wear state of the fuel distributor can be evaluated quickly and accurately, and there is no need for complex disassembly and inspection and test bench, reducing the maintenance cost and time. By combining multiple monitoring means, the accuracy of wear state evaluation is improved, and remote monitoring and diagnosis are supported, which is convenient for taking maintenance measures in time.

[0029] 2. The present invention drains the oil received inside the receiving hopper to the receiving part through a drainage pipe. Through the driving of the receiving part by the driving part, not only can the receiving part be moved to the position of the drainage pipe for oil receiving work, but also during the movement, the L-shaped rod and the baffle in the material blocking assembly can be extruded, so that the baffle automatically blocks the discharge end of the receiving hopper, and the receiving part with received oil can be moved to the oil detection module, and the oil detection module detects and processes the oil, thereby improving the accuracy of subsequent analysis of wear monitoring.

[0030] 3. The present invention sets a rotatable sector motion inside the guide rail frame, so that through the arc surface of the sector plate, when the sliding seat makes a feeding motion, its T-shaped transmission block can move upward, and then drive the negative film to move upward. The oil-absorbing cotton cylinder absorbs the detected oil and wipes the top of the negative film, improving the accuracy of the new round of oil sampling and detection, and having the function of automatic wiping and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the schematic diagram of the hydraulic system of the present invention;

[0032] Figure 2 is the structural schematic diagram of the oil receiving device of the present invention;

[0033] Figure 3 is of the present invention Figure 2 the side view of the structure of the oil receiving device in;

[0034] Figure 4 is of the present invention Figure 3 the sectional view of the structure of the oil receiving device in;

[0035] Figure 5 is of the present invention Figure 4 the cooperation schematic diagram of the receiving hopper and the material blocking assembly in;

[0036] Figure 6 is of the present invention Figure 2 the combined schematic diagram of the oil detection module, the receiving part and the driving part in;

[0037] Figure 7 For the present invention Figure 6 Combined schematic diagram of the material receiving part and the driving part in the present invention;

[0038] Figure 8 For the present invention Figure 7 Bottom view of the structure of the sliding seat in the present invention;

[0039] Figure 9 For the present invention Figure 7 Cross-sectional schematic diagram of the sliding seat in the present invention;

[0040] Figure 10 For the present invention Figure 7 Partial cross-sectional schematic diagram of the guide rail frame in the present invention.

[0041] In the figure: 1, oil receiving tank; 2, material receiving hopper; 3, drainage pipe;

[0042] 4, material blocking assembly; 41, U-shaped frame; 42, L-shaped rod; 43, baffle; 44, first spring;

[0043] 5, filter; 6, oil liquid detection module;

[0044] 7, material receiving part; 71, annular sleeve; 72, bottom plate; 73, T-shaped transmission block; 74, second spring; 75, sector plate; 76, limiting rod; 77, center of gravity block; 78, oil absorbing cotton cylinder;

[0045] 8, driving part; 81, guide rail frame; 82, fixing frame; 83, sliding seat; 84, telescopic cylinder. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiment 1:

[0048] Referring to the attached Figure 1 , a method for monitoring the wear state of a fuel dispenser implemented based on a high and low pressure oil pump includes the following steps:

[0049] S1. Install the fuel dispenser to be monitored on a horizontal lathe, supply oil to the hydraulic system through a double-pump, each responsible for high pressure and low pressure, and adjust the outlet pressure and switch the oil supply circuit through an electromagnetic relief valve;

[0050] During operation, since it is necessary to switch between high and low pressures, a method of supplying oil with two independent double - acting fixed - displacement pumps is adopted to provide hydraulic oil for the main oil circuit. An electromagnetic relief valve is connected to the pump outlet to adjust the outlet pressure of the pump, that is, to adjust the opening of the valve port of the electromagnetic relief valve and regulate the output pressure of the pump to meet the working requirements.

[0051] S2. Each double - acting oil pump outputs two oil paths, which are respectively adjusted to 0.5 MPA and 9 MPA through electromagnetic relief valves, and the monitoring of the constant - pitch state, ahead - running state, and astern - running state is carried out, and this process repeats cyclically.

[0052] S3. Flow sensors, pressure sensors, and temperature sensors are set at each inlet pipe junction to detect the flow rate, inlet pressure, and temperature of each inlet port. An oil - receiving device installed on the horizontal lathe is used to receive the leaked oil and detect its leakage volume.

[0053] The leaked oil returns to the oil - receiving device from the T port. A liquid - level sensor is set in the oil - receiving device. When the set upper - limit liquid level is reached, the oil return pump automatically operates to pump the oil in the drain tank back to the main fuel tank. When the set lower - limit liquid level is reached, the oil return pump automatically stops working.

[0054] S4. The received oil is monitored through the oil - receiving device, and the monitoring methods include particle counting and contamination monitoring, ferrographic analysis monitoring, and online monitoring.

[0055] S5. The monitoring data is transmitted to the remote monitoring terminal through the network to achieve real - time remote monitoring and diagnosis of the wear state of the oil distributor, facilitating timely maintenance measures.

[0056] By real - time monitoring of the operating parameters of the oil pump, leakage volume, and wear particle concentration, the present invention can quickly and accurately evaluate the wear state of the oil distributor, and without complex disassembly and inspection and test benches, reducing the maintenance cost and time. By combining multiple monitoring means, the accuracy of wear - state evaluation is improved, and it supports remote monitoring and diagnosis, facilitating timely maintenance measures.

[0057] The present invention can be used for the test of various types of oil distributors. An electromagnetic relief valve is connected to the pump outlet to adjust the outlet pressure of the pump, that is, to adjust the opening of the valve port of the electromagnetic relief valve and regulate the output pressure of the pump to meet the working requirements, and through the adjustment of the electromagnetic directional valve, the simulation of the pitch - adjusting requirement is realized.

[0058] The outlet pressure of the hydraulic pump is set through the electromagnetic relief valve, that is, the maximum working pressure of the hydraulic circuit, to ensure that each hydraulic component in the hydraulic system does not operate overloaded. When the external load suddenly changes, the electromagnetic relief valve also plays an overflow role. A unloading relief valve is set at the outlet to automatically relieve pressure when the pressure is too high.

[0059] The hydraulic system of the reliability test bench for the fuel dispenser mainly consists of a hydraulic pump, an electromagnetic directional valve, an electromagnetic relief valve, a check valve, a unloading relief valve, and a lubricating oil circuit. The principle is as Figure 1 shown.

[0060] For the convenience of maintaining and monitoring the hydraulic system, necessary detection elements should be installed in the main sections of the system; a cooling system is set up in the system to cool the oil temperature; a heating system is set up to heat the oil temperature; an oil temperature detection and control system is set up to control the temperature of the hydraulic oil;

[0061] A temperature detection system is set up with temperature sensors installed on the fuel distribution seal pair to monitor the temperature of the fuel dispenser in real time;

[0062] A pressure detection system is set up with pressure sensors installed at the outlet of the hydraulic pump, the hydraulic oil inlets A1, A2, B1, and B2 of the fuel dispenser to monitor the inlet pressure of the fuel dispenser and the outlet pressure of the pump in real time;

[0063] A flow detection system is set up with flow sensors installed at the hydraulic oil inlets A1, A2, B1, and B2 of the fuel dispenser to monitor the oil inlet volume of the fuel dispenser in real time, and directly detect the leakage volume of its high-pressure seal pair through the readings of the flow sensors. A liquid level detection system is set up to detect the oil level in the fuel tank in real time;

[0064] In the high-pressure rotary test, the maximum pressure provided by the hydraulic unit for the circuit is 10 MPa, and the output flow is about 70 L / min. The maximum working pressure for measuring the leakage volume of the fuel dispenser is estimated to be 9 MPa, and the maximum leakage volume per single circuit is ≤ 20 L / min;

[0065] During the working process, the working pressure of the hydraulic pump:

[0066] p 1 ≥(1.25~1.6)·p max =(1.25~1.6)×10=12.5~16 MPa

[0067] Considering the test device for the fuel distribution seal pair, two oil seal pairs work simultaneously, and there are four oil inlet ports A1, A2, B1, and B2 at the oil inlet. During the test process, high and low pressure conversion is required. To simplify the design, two double-pump quantitative pumps are used to supply pressure and supply oil to different oil seal pairs respectively.

[0068] According to the flow rate and the working pressure of the hydraulic pump, two quantitative pumps are selected to supply oil to the system. The model of the double-pump quantitative pump is PV2R32 - 66 / 70. Referring to the technical parameter table, the nominal displacement of the front pump of this pump is 66 ml / r, the nominal displacement of the rear pump is 70 ml / r, and the working speed is 750~1800 r / min. The maximum working pressure of this hydraulic pump is 21 MPa. When the driving motor speed is 980 r / min, the nominal flow rate of the front pump is 64.7 L / min, and the nominal flow rate of the rear pump is 68.6 L / min;

[0069] The present invention includes the following steps:

[0070] Monitoring of the operating parameters of the high and low pressure oil pumps: The operating parameters of the high and low pressure oil pumps, including oil pressure, flow rate, oil temperature, etc., are monitored in real time through sensors; the changes in these parameters are closely related to the wear state of the oil distributor. When the oil distributor wears, abnormal fluctuations will occur in the oil pressure and flow rate;

[0071] Monitoring of the leakage amount: The leakage amount of the oil distributor is monitored in real time by using a flow sensor; according to the relationship curve between the leakage amount and the assembly clearance, the actual assembly clearance value of the oil distributor is calculated, so as to judge the degree of wear;

[0072] Detection of the concentration of wear particles: The concentration of ferromagnetic and non-ferromagnetic wear particles in the hydraulic oil is detected by a metal wear particle sensor; the change in the particle concentration can directly reflect the wear condition of the oil distributor;

[0073] Data fusion and analysis: The above monitoring data is transmitted to the central processor, and the data is fused and analyzed through a preset algorithm to generate a real-time evaluation report on the wear state of the oil distributor; when the degree of wear exceeds the preset threshold, the system automatically issues a warning signal;

[0074] Remote monitoring and diagnosis: The monitoring data is transmitted to the remote monitoring terminal through the network to realize real-time remote monitoring and diagnosis of the wear state of the oil distributor, which is convenient for taking maintenance measures in time.

[0075] The stable distance state monitoring includes controlling the oil supply at 0.5 MPA through an electromagnetic overflow valve and returning the oil to the oil tank at 9 MPA. At this time, low-pressure oil is supplied to each port of the sealing pair through an electromagnetic reversing valve;

[0076] The ahead state monitoring includes, after 1 hour of stable distance state monitoring, adjusting the oil supply to 9 MPA through an electromagnetic overflow valve and returning the oil to the oil tank at 0.5 MPA. Through the control of the electromagnetic reversing valve, oil is supplied to ports A1 and A2, and no oil is supplied to ports B1 and B2;

[0077] The astern state monitoring includes, 1 minute after the ahead state monitoring, through the control of the electromagnetic reversing valve, oil is supplied to ports B1 and B2, and no oil is supplied to ports A1 and A2.

[0078] Low-pressure oil injection is carried out through a double-pump to four oil injection ports to simulate the normal use state, monitor the oil output speed of the lubricating oil pump, and estimate the wear condition; then, high-pressure oil injection is carried out for the four oil injection ports in turn to monitor the wear condition of a single position, and at the same time, by comparing with other monitoring points, the severity of wear at different positions.

[0079] The particle counting and contamination monitoring includes monitoring the particle number and size distribution in the oil by an automatic particle counter to evaluate the cleanliness and wear degree of the oil;

[0080] Install a particle counter or oil contamination sensor at key positions in the hydraulic system to ensure real-time monitoring of the oil condition. Analyze the changes in the number and size distribution of particles using the data generated by the particle counter to judge the wear trend.

[0081] The ferrographic analysis and monitoring separates and analyzes the wear particles in the oil using ferrographic detection technology, and judges the wear type and degree based on the morphology, size and composition of the wear particles.

[0082] Combined with a portable or on-line ferrographic analyzer, it is used to analyze the wear particles in the oil regularly or in real time. Judge the wear type through the analysis of the morphology and composition of the wear particles, such as abrasive wear, fatigue wear, etc.

[0083] The on-line monitoring adopts an on-line monitoring method based on the optical method or electromagnetic induction to detect the size and number of wear particles in real time.

[0084] By installing temperature and pressure sensors, monitor the temperature and pressure changes of the oil to assist in judging the wear status, whether the system is abnormal due to wear, and regularly collect oil samples for ferrographic analysis to record the characteristics and distribution of wear particles. Set warning thresholds according to the monitoring data, and issue an alarm in time when the wear index exceeds the normal range.

[0085] Refer to the appendix Figures 2 to 10 As shown in the figure, the oil receiving device includes an oil receiving tank 1 installed on a horizontal lathe, and a feeding hopper 2 is fixedly connected above the oil receiving tank 1 through a bracket;

[0086] Through the setting of the feeding hopper 2, it is used to receive the oil leaked during the monitoring of the oil distributor, prevent the oil from dripping everywhere, which is not conducive to the management of the oil by the oil receiving tank 1, and store it temporarily through the oil receiving tank 1;

[0087] The bottom of the oil receiving tank 1 is fixedly connected with a circulation pipe for discharging the oil inside the oil receiving tank 1 to the hydraulic system, and a filter 5 for treating the oil is installed on the circulation pipe. A detection mechanism for sampling and detecting the oil is provided on the oil receiving tank 1;

[0088] Through the setting of the filter 5, it is used to filter and treat the oil, and the treated oil is transported to the hydraulic system again through the circulation pipe, thereby improving the oil recycling effect;

[0089] Through the setting of the detection mechanism, it is used to evaluate the cleanliness and wear degree of the oil, the wear particles in the oil, judge the wear type and degree based on the morphology, size and composition of the wear particles, and analyze the wear particles in the oil, and judge the wear type through the analysis of the morphology and composition of the wear particles, such as abrasive wear, fatigue wear, etc.

[0090] Refer to the attached Figure 4 and Figure 5 , a drainage pipe 3 is fixedly connected to the discharge pipe at the bottom of the material receiving hopper 2, and the initial end of the drainage pipe 3 is inclined upward;

[0091] Through the setting of the drainage pipe 3, it is used to branch and drain the oil liquid received by the material receiving hopper 2 into the detection mechanism, and the oil liquid detection work is carried out through the detection mechanism. Through the initial end of the drainage pipe 3 being set in an upward inclined manner, it avoids the problem that when the material receiving hopper 2 leaks normally, the oil liquid is exported through the drainage pipe 3;

[0092] A material blocking component 4 for blocking the discharge end at the bottom of the material receiving hopper 2 is arranged inside the oil receiving tank 1;

[0093] Through the setting of the material blocking component 4, it is used to block the discharge end of the material receiving hopper 2, so that the oil liquid at the bottom of the material receiving hopper 2 gradually rises. When the oil liquid rises to the height of the drainage pipe 3, it can be discharged to the detection area of the detection mechanism through the drainage pipe 3, and the oil liquid detection work is carried out through the detection mechanism.

[0094] Refer to the attached Figure 4 and Figure 5 , the material blocking component 4 includes a U-shaped frame 41 fixed to the inner wall of the oil receiving tank 1. An L-shaped rod 42 is slidably connected inside the U-shaped frame 41. One end of the L-shaped rod 42 is fixedly connected with a baffle 43 for blocking the discharge end at the bottom of the material receiving hopper 2. A first spring 44 for elastically squeezing the L-shaped rod 42 to reset is fixedly connected inside the U-shaped frame 41;

[0095] Through the elastic squeezing of the L-shaped rod 42 by the first spring 44, when the L-shaped rod 42 is not subjected to a driving force, the L-shaped rod 42 and the baffle 43 are always in a contracted state. By the baffle 43 being in a contracted state, it will not block the discharge end of the material receiving hopper 2, so that the material receiving hopper 2 can carry out normal liquid leakage receiving and discharging work.

[0096] Refer to the attached Figures 2 to 4 and Figures 6 to 10 , the detection mechanism includes a material receiving part 7, an oil liquid detection module 6, and a driving part 8 for switching the material receiving part 7 back and forth between the oil liquid detection module 6 and the drainage pipe 3;

[0097] The oil liquid received inside the material receiving hopper 2 is discharged into the material receiving member 7 through the drain pipe 3. By driving the material receiving member 7 by the driving member 8, not only can the material receiving member 7 be moved to the position of the drain pipe 3 for oil liquid receiving work, but also during the movement, the L-shaped rod 42 and the baffle 43 in the material blocking assembly 4 can be squeezed, so that the baffle 43 automatically blocks the discharge end of the material receiving hopper 2. Moreover, the material receiving member 7 containing the oil liquid can be moved to the oil liquid detection module 6, and the oil liquid detection module 6 can detect and process the oil liquid, thereby improving the accuracy of subsequent analysis of wear monitoring.

[0098] Embodiment 2: Different from Embodiment 1;

[0099] Refer to the appendix Figures 6 to 10 , the driving member 8 includes a guide rail frame 81 and a fixing frame 82 fixed on the oil receiving tank 1. A sliding seat 83 is slidably connected to the top of the guide rail frame 81. A telescopic cylinder 84 for driving the sliding seat 83 to reciprocate along the direction of the guide rail frame 81 is fixedly connected to the fixing frame 82. The oil liquid detection module 6 is fixed to the top of the fixing frame 82 through a bracket;

[0100] The telescopic cylinder 84 is connected to an external power supply and control system, and is used to drive the sliding seat 83 to slide along the direction of the guide rail frame 81, so as to realize the conversion of the receiving end and the detection end positions of the material receiving member 7;

[0101] The material receiving member 7 includes an annular sleeve 71 fixed to the top of the sliding seat 83, and a bottom plate 72 is arranged inside the annular sleeve 71;

[0102] An oil receiving cylinder is formed by the annular sleeve 71 and the bottom plate 72. The oil liquid discharged from the drain pipe 3 can be contacted through the combined oil receiving cylinder, and the scattering of the oil liquid is prevented, thereby improving the stability of subsequent detection.

[0103] Embodiment 3: Different from Embodiment 1;

[0104] Refer to the appendix Figures 8 to 10 , the bottom plate 72 is slidably connected to the inside of the annular sleeve 71 in a sealed sliding manner. The top of the bottom plate 72 is set as an arc surface, and a T-shaped transmission block 73 is fixedly connected to the bottom of the bottom plate 72. The bottom of the T-shaped transmission block 73 extends to the bottom of the sliding seat 83. A second spring 74 for squeezing the T-shaped transmission block 73 downward is fixedly connected to the bottom of the sliding seat 83. Two squeezing members for squeezing the T-shaped transmission block 73 upward are arranged inside the guide rail frame 81. An oil absorbing cotton cylinder 78 is installed on the outer side of the oil receiving tank 1;

[0105] It is installed inside the annular sleeve 71 in a way that the negative film 72 slides up and down. Thus, it is convenient to push the oil inside the annular sleeve 71 upward by the upward movement of the negative film 72. The oil after detection is absorbed by the oil-absorbing cotton cylinder 78, and the top of the negative film 72 is wiped. Since the top of the negative film 72 is set as an arc surface, it is convenient for the oil-absorbing cotton cylinder 78 to perform the cleaning work better.

[0106] Through the elastic force of the second spring 74 itself, the T-shaped transmission block 73 can be squeezed downward, making the T-shaped transmission block 73 move downward. Thus, the negative film 72 is always set in a contracted state, thereby improving the stability of oil reception.

[0107] The extrusion part includes a movable groove opened inside the guide rail frame 81. A sector plate 75 and a limiting rod 76 are rotatably connected inside the movable groove through a rotating shaft. The top of the sector plate 75 extends to the top of the guide rail frame 81. A gravity block 77 is fixedly connected to the bottom of the sector plate 75. One side of the sector plate 75 is set as a vertical surface.

[0108] By setting a rotatable sector motion inside the guide rail frame 81, it is convenient that when the sliding seat 83 makes a feeding motion through the arc surface of the sector plate 75, the T-shaped transmission block 73 can move upward, thereby driving the negative film 72 to move upward. The oil after detection is absorbed by the oil-absorbing cotton cylinder 78, and the top of the negative film 72 is wiped, improving the accuracy of the new round of oil sampling and detection, and having the function of automatic wiping and cleaning.

[0109] Since one side of the sector plate 75 is set as a vertical surface, when the material receiving part 7 with oil is transported to the oil detection module 6 by the sliding seat 83, the T-shaped transmission block 73 can squeeze the vertical surface of the sector plate 75, making the sector plate 75 rotate around the rotating shaft, forming a hidden motion of the sector plate 75. Thus, it is convenient for the material receiving part 7 carrying oil to move to the oil detection module 6 for detection work. Through the setting of the gravity block 77, it is convenient for the sector plate 75 to always be in an unfolded state.

[0110] It should be noted that the term "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0111] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for monitoring the wear status of a distributor based on high and low pressure oil pumps, characterized in that: The following steps are involved: S1. Install the oil distributor to be monitored on the horizontal lathe, supply oil to the hydraulic system through the double oil pump, each responsible for high pressure and low pressure, and adjust the outlet pressure and switch the oil supply line through the electromagnetic overflow valve; S2. Each double oil pump delivers two oils, which are adjusted to 0.5MPA and 9MPA respectively through the electromagnetic overflow valve to monitor the steady distance state, forward state and reverse state, and the cycle repeats; S3. A flow sensor, a pressure sensor and a temperature sensor are provided at each oil inlet pipe junction to detect the flow rate, oil inlet pressure and temperature of each oil inlet. The leaked oil is received by an oil receiving device installed on the horizontal lathe and the leakage amount is detected. S4. Monitor the received oil through the oil receiving device, and the monitoring methods include particle counting and contamination monitoring, ferrography monitoring, and online monitoring; S5. The monitoring data is transmitted to the remote monitoring terminal through the network to realize real-time remote monitoring and diagnosis of the wear status of the oil distributor.

2. The method for monitoring the wear state of an oil distributor based on a high and low pressure oil pump according to claim 1 is characterized in that: The steady-distance state monitoring includes controlling the oil supply at 0.5MPA through the electromagnetic overflow valve and returning the oil to the oil tank at 9MPA, and at this time, the electromagnetic reversing valve simultaneously supplies low-pressure oil to each port of the sealing pair; The forward vehicle state monitoring includes monitoring the steady distance state for 1 hour, adjusting the electromagnetic overflow valve to 9MPA to supply oil, returning oil to the oil tank at 0.5MPA, and controlling the electromagnetic reversing valve to supply oil to ports A1 and A2, and not supply oil to ports B1 and B2; The reversing state monitoring includes forward state monitoring for 1 minute, and then the electromagnetic reversing valve is controlled to supply oil to ports B1 and B2, while ports A1 and A2 are not supplied with oil.

3. The method for monitoring the wear state of an oil distributor based on a high and low pressure oil pump according to claim 1 is characterized in that: Low-pressure oil injection is carried out to the four oil injection ports through a double oil pump to simulate normal use conditions, monitor the lubricating oil pumping speed, and infer the wear condition. High-pressure oil injection is then carried out in sequence to the four oil injection ports to monitor the wear condition of a single location. At the same time, the severity of wear at different locations can be determined by comparison with other monitoring points.

4. The method for monitoring the wear state of an oil distributor based on a high and low pressure oil pump according to claim 1 is characterized in that: The particle counting and contamination monitoring includes monitoring the number and size distribution of particles in the oil by an automatic particle counter to evaluate the cleanliness and wear degree of the oil; The ferrographic analysis monitoring uses ferrographic detection technology to separate and analyze the wear particles in the oil, and determines the type and degree of wear based on the shape, size and composition of the wear particles; The online monitoring detects the size and quantity of the abrasive particles in real time by adopting an online monitoring method based on optical method or electromagnetic induction.

5. The method for monitoring the wear state of an oil distributor based on a high-pressure or low-pressure oil pump according to any one of claims 1 to 4, characterized in that: The oil receiving device comprises an oil receiving box (1) installed on the horizontal lathe, and a receiving hopper (2) is fixedly connected to the top of the oil receiving box (1) via a bracket; The bottom of the oil receiving box (1) is fixedly connected to a circulation pipe for discharging the oil inside the oil receiving box (1) to the hydraulic system, and a filter (5) for treating the oil is installed on the circulation pipe. The oil receiving box (1) is provided with a detection mechanism for sampling and detecting the oil.

6. The method for monitoring the wear state of an oil distributor based on a high and low pressure oil pump according to claim 5 is characterized in that: The discharge pipe at the bottom of the receiving hopper (2) is fixedly connected to a drainage pipe (3), and the initial end of the drainage pipe (3) is arranged to be inclined upward; A material blocking component (4) for shielding the discharge end at the bottom of the docking hopper (2) is arranged inside the oil receiving box (1).

7. The method for monitoring the wear state of an oil distributor based on a high and low pressure oil pump according to claim 6 is characterized in that: The material blocking assembly (4) comprises a U-shaped frame (41) fixed to the inner wall of the oil receiving box (1), an L-shaped rod (42) is slidably connected inside the U-shaped frame (41), one end of the L-shaped rod (42) is fixedly connected to a baffle (43) for shielding the discharge end at the bottom of the docking hopper (2), and a first spring (44) for resetting and squeezing the L-shaped rod (42) is fixedly connected inside the U-shaped frame (41).

8. The method for monitoring the wear state of an oil distributor based on a high and low pressure oil pump according to claim 7 is characterized in that: The detection mechanism comprises a material receiving member (7), an oil detection module (6), and a driving member (8) for switching the material receiving member (7) back and forth between the oil detection module (6) and the drainage tube (3).

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