An online detection system for hydraulic hoist

Abstract

The present invention belongs to the technical field of hydraulic gate hoist detection, and particularly relates to an online detection system for a hydraulic gate hoist, comprising a data acquisition system and a data detection module; the data acquisition system is used for transmitting data of hydraulic oil quality indicators detected by the data detection module to a monitoring center in real time; a sampling unit is used for collecting and sampling the hydraulic oil in a hydraulic oil tank in the hydraulic system; an oil diversion unit is used for diverting the hydraulic oil sampled by the sampling unit into a plurality of detection tubes; an index detection unit is used for performing quality index detection on the number and size distribution of solid particles, moisture, temperature, viscosity and conductivity of the hydraulic oil diverted in the plurality of detection tubes; the present invention can quickly and accurately perform online detection on the hydraulic oil stored for a long time in the hydraulic system of the hydraulic gate hoist, to prevent the hydraulic oil from being polluted, aged and other problems caused by long-term storage, thereby affecting the normal operation of the hydraulic gate hoist system.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic hoist detection, and in particular relates to an online detection system for a hydraulic hoist. Background Art

[0002] Hydraulic gate hoist is a mechanical device that uses liquid pressure to drive the gate to open and close. It is widely used in hydraulic structures such as hydropower stations, reservoirs and other facilities. Although it has many advantages, such as being able to provide greater driving force, precise control and remote operation.

[0003] Most of the existing online detection systems for hydraulic gate hoists focus on vibration detection, stress detection or self-defect detection of the gate hoist itself, and the quality of the hydraulic oil in the hydraulic system of the hydraulic gate hoist is also an important factor affecting the safe operation of the hydraulic gate hoist.

[0004] In water conservancy projects, many gates are not opened and closed frequently, and some are only opened once every few years or even more than ten years. Therefore, the hydraulic oil used by the hydraulic gate hoist is also stored in the hydraulic oil tank for a long time. Online detection of the hydraulic oil quality in the hydraulic oil tank is an important means to ensure the long-term and stable operation of the hydraulic system of the hydraulic gate hoist. Through real-time monitoring, problems such as oil contamination and aging can be discovered in time to ensure that the hydraulic gate hoist system can work normally. Summary of the invention

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is an online detection system for a hydraulic hoist, comprising a data acquisition system and a data detection module;

[0007] A data acquisition system, wherein the data acquisition system is used to transmit the data of the hydraulic oil quality index detected by the data detection module to the monitoring center in real time;

[0008] A data detection module, the data detection module comprising a sampling unit, an oil diversion unit and an index detection unit installed in a detection box;

[0009] A sampling unit, the sampling unit is used to collect and sample the hydraulic oil in the hydraulic oil tank of the hydraulic system;

[0010] An oil flow diversion unit, the oil flow diversion unit is used to divert the hydraulic oil sampled by the sampling unit into a plurality of detection tubes;

[0011] The index detection unit is used to detect the quality index of the hydraulic oil diverted in multiple detection tubes, including the number and size distribution of solid particles, moisture, temperature, viscosity and conductivity.

[0012] Furthermore, the sampling unit includes an extraction tube and an intermediate connecting tube, the extraction tube is arranged on the detection box, and its lower end port extends into the hydraulic oil tank, and its upper end port extends into the interior of the detection box, the intermediate connecting tube is installed on the disc of the oil diversion unit, the lower end port of the intermediate connecting tube is detachably connected to the extraction tube, and the upper end port of the intermediate connecting tube is detachably connected to the suction tube, the bottom end port of the suction tube is provided with a solenoid valve, and its internal sliding seal is provided with a rubber plug, the top end surface of the rubber plug is vertically fixed with a pull rod, and the top end portion of the pull rod slides upward to extend out of the suction tube, and the top end portion of the pull rod is connected to the piston rod of the vertically arranged first hydraulic cylinder.

[0013] Furthermore, the oil diversion unit includes a disc, and the center of the disc is connected to the servo motor through a rotating shaft, at least five detection tubes are installed in a circular array on the disc, and the top pipe mouth of each detection tube is connected to a docking ring, the inner diameter of the docking ring is the same as the outer diameter of the suction tube, the middle connecting tube located on the disc is arranged on the same circumference as the five detection tubes, and the top end of the servo motor is fixedly supported to the top of the detection box by a vertical support rod.

[0014] Furthermore, the sampling unit also includes a sliding docking assembly, which includes a rubber intubation tube, a sliding block, an elastic member, a connecting ear block, a second hydraulic cylinder, an insulating sleeve, an insulating tube, an electromagnetic suction block and a metal strip. The intermediate connecting tube is slidably installed in a sliding hole opened on the disc, and the bottom end of the intermediate connecting tube is connected to a rubber intubation tube, and the rubber intubation tube is slidably and sealedly inserted into the extraction tube. At least two vertical sliding grooves are vertically opened on the hole wall of the sliding hole, and a sliding block is slidably arranged in each vertical sliding groove. A plurality of the sliding blocks are fixedly connected to the tube wall of the intermediate connecting tube, and the sliding block is connected to the vertical elastic member through the vertical elastic member. The suction pipe is connected to the groove wall of the slide groove, at least two connecting ear blocks are fixed to the outer tube wall at the top of the suction pipe, and each connecting ear block is connected to the top of the detection box through a second hydraulic cylinder arranged vertically, the cylinder body of the first hydraulic cylinder slides through the top of the detection box, and an insulating tube is fixedly sleeved on the cylinder body, an insulating sleeve is fixed at the top of the detection box and where the cylinder body of the first hydraulic cylinder slides through, and the insulating sleeve is sleeved on the outside of the sliding insulating tube, a plurality of electromagnetic suction blocks are insulated and installed on the inner ring wall of the insulating sleeve, a plurality of metal strips are vertically fixed on the tube wall of the insulating tube, and each metal strip is aligned and contacted with each electromagnetic suction block.

[0015] Furthermore, the index detection unit includes a particle counter, a moisture sensor, a viscosity sensor, a temperature sensor and a conductivity sensor, and different types of sensors are installed on the multiple detection tubes respectively.

[0016] Furthermore, a cleaning unit is provided in the detection box, and the cleaning unit includes a sealing plug, a side ear block, a third hydraulic cylinder, a flushing duct, a waste discharge duct and a connecting hose. A plurality of side ear blocks are fixed to the top outer ring surface of the sealing plug, and the upper surface of each side ear block is respectively connected to the piston rod of the third hydraulic cylinder vertically fixed in the detection box. The sealing plug is located directly above the rotating detection tube, and the sealing plug is slidably and sealedly inserted into the docking ring. A flushing duct and a waste discharge duct are installed on the sealing plug, and the bottom end of the waste discharge duct is slidably inserted into the bottom of the detection tube. The bottom end of the flushing duct is located at the mouth of the detection tube, and the other end of the flushing duct and the waste discharge duct extend out of the detection box together with the connecting hose.

[0017] Furthermore, the cleaning unit also includes a sealing sleeve, a connecting block and a fourth hydraulic cylinder. The waste discharge conduit is slidably installed on the sealing plug through the sealing sleeve. A connecting block is fixed at the connection between the waste discharge conduit and the connecting hose, and the connecting block is aligned with one of the side ear blocks. A fourth hydraulic cylinder is vertically fixed on the connecting block, and the bottom end surface of the piston rod of the fourth hydraulic cylinder is connected to the side ear block directly below.

[0018] The present invention has the following beneficial effects:

[0019] 1. In the present invention, the sampling unit, the oil diversion unit and the index detection unit of the data detection module cooperate with each other. The sampling unit can collect and sample the hydraulic oil in the hydraulic oil tank, and the extracted hydraulic oil is diverted into multiple detection tubes in the sealed environment inside the detection box, and each detection tube is correspondingly installed with different types of sensors, so that multiple sensors can work at the same time and can perform index detection on the hydraulic oil separately, which can not only improve the rapid online monitoring of the hydraulic oil quality of the hydraulic gate hoist, but also avoid the phenomenon of mutual interference between multiple sensors, so that the hydraulic oil stored for a long time in the hydraulic system of the hydraulic gate hoist can be quickly and accurately detected online, so as to prevent the hydraulic oil from being polluted and aged due to long-term storage, which will affect the normal operation of the hydraulic gate hoist system.

[0020] 2. The present invention sets a sliding docking assembly between the extraction tube, the intermediate connecting tube and the suction tube. The downward sliding of the suction tube can push the rubber insert tube at the bottom end of the intermediate connecting tube to be sealed and inserted into the extraction tube, and the lower end of the suction tube is sealed and inserted into the sliding hole, so that the three can be sealed and connected to form a whole, so that the hydraulic oil in the hydraulic oil tank can accurately enter the suction tube, and the gap at the connection between the extraction tube, the intermediate connecting tube and the suction tube is prevented, which will not only affect the rapid extraction and collection effect of the hydraulic pressure in the hydraulic oil tank, but also cause the leakage of the extracted and collected hydraulic oil, thereby affecting the rapid and accurate index detection of the collected hydraulic oil.

[0021] 3. The present invention sets a cleaning unit in the detection box. The piston rod of the third hydraulic cylinder extends to push the sealing plug to slide downward and seal it into the docking ring of the rubber material. The waste discharge conduit slidably inserted into the bottom of the detection tube will first suck out the hydraulic oil after detection, and then the flushing conduit will flush and clean the inside of the detection tube, so that the detection tube can continue to accurately detect the quality index of the hydraulic oil sampled next time. When the bottom end of the waste discharge conduit slides upward to be flush with the end of the flushing conduit, the sealing plug slides into the docking ring to seal the detection tube, so that the corresponding sensor can accurately and stably detect the quality index of the hydraulic oil diverted by the detection tube. Then, the cleaning unit can not only clean the hydraulic oil in the detection tube, but also seal the tube mouth of the detection tube that needs to be sealed, thereby further improving the online detection system's rapid and stable detection and processing of the hydraulic gate opener.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the online detection system disclosed in the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the detection box disclosed in the present invention;

[0026] Figure 3 It is a structural schematic diagram of the disc disclosed in the present invention;

[0027] Figure 4 A partial cross-sectional view of the disc disclosed in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the sampling unit disclosed in the present invention;

[0029] Figure 6 is a cross-sectional view of the suction tube disclosed in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the cleaning unit disclosed in the present invention.

[0031] In the figure: 1. Testing box;

[0032] 2. Sampling unit; 21. Extraction tube; 22. Intermediate connecting tube; 23. Suction tube; 24. Rubber plug; 25. Pull rod; 26. First hydraulic cylinder;

[0033] 3. Oil diversion unit; 31. Disc; 311. Sliding hole; 312. Vertical slide groove; 32. Detection tube; 33. Docking ring; 34. Vertical support rod;

[0034] 4. Sliding docking assembly; 41. Rubber insert; 42. Sliding block; 43. Elastic member; 44. Connecting ear block; 45. Second hydraulic cylinder; 46. Insulating sleeve; 47. Insulating tube; 48. Electromagnetic suction block; 49. Metal strip;

[0035] 5. Cleaning unit; 51. Sealing plug; 52. Side ear block; 53. Third hydraulic cylinder; 54. Flushing conduit; 55. Waste discharge conduit; 56. Connecting hose; 57. Sealing sleeve; 58. Connecting block; 59. Fourth hydraulic cylinder;

[0036] 6. Index detection unit. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] See also Figure 1-Figure 7 As shown, the present invention is an online detection system for a hydraulic gate hoist, including a data acquisition system and a data detection module;

[0040] A data acquisition system, wherein the data acquisition system is used to transmit the data of the hydraulic oil quality index detected by the data detection module to the monitoring center in real time;

[0041] A data detection module, the data detection module comprises a sampling unit 2, an oil diversion unit 3 and an index detection unit 6 installed in a detection box 1;

[0042] A sampling unit 2, the sampling unit 2 is used to collect and sample the hydraulic oil in the hydraulic oil tank of the hydraulic system;

[0043] An oil diversion unit 3, the oil diversion unit 3 is used to divert the hydraulic oil sampled by the sampling unit 2 into a plurality of detection tubes 32;

[0044] An index detection unit 6, which is used to detect the quality index of the hydraulic oil diverted in the multiple detection tubes 32, including the number and size distribution of solid particles, moisture, temperature, viscosity and conductivity;

[0045] Specifically, when the present invention performs online detection on the hydraulic gate hoist, the online detection can be performed before the hydraulic gate hoist works or when the hydraulic system of the hydraulic gate hoist is in a slow working state, and then the sampling unit 2 is controlled to extract the hydraulic oil flowing in the hydraulic oil tank and collect it into the sampling unit 2, and the sampled hydraulic oil amount will not affect the normal operation of the hydraulic oil in the hydraulic oil tank. Then, the sampled hydraulic oil collected by the sampling unit 2 will be diverted and injected into multiple detection tubes 32 of the oil diversion unit 3. Since each detection tube 32 is correspondingly installed with a sensor used by the indicator detection unit 6, each corresponding sensor can measure the number of solid particles and the size of the hydraulic oil diverted to each detection tube 32. The data acquisition system will collect and record the data detected by each sensor and transmit it to the monitoring center in real time. For example, when the particle counter detects that the number and size of solid particles in the hydraulic oil in the corresponding detection tube 32 are greater than the set threshold, the monitoring center will issue an alarm. At this time, the maintenance personnel need to quickly check whether the hydraulic oil tank has been stored in a humid environment for a long time, resulting in the rusting and falling of fixed particles in the internal components or other parts. Moisture is one of the main causes of hydraulic oil deterioration. The moisture sensor can continuously measure the water content in the oil to prevent corrosion or emulsification caused by water pollution.

[0046] In an embodiment of the present invention, the sampling unit 2 includes an extraction tube 21, an intermediate connecting tube 22, a suction tube 23, a rubber plug 24, a pull rod 25 and a first hydraulic cylinder 26. The extraction tube 21 is arranged on the detection box 1, and its lower end port extends into the hydraulic oil tank, and its upper end port extends into the interior of the detection box 1. The intermediate connecting tube 22 is installed on the disc 31 of the oil diversion unit 3. The lower end port of the intermediate connecting tube 22 is detachably connected to the extraction tube 21, and the upper end port of the intermediate connecting tube 22 is detachably connected to the suction tube 23. The bottom end port of the suction tube 23 is provided with a solenoid valve, and a rubber plug 24 is provided for internal sliding sealing. The top end surface of the rubber plug 24 is vertically fixed with a pull rod 25, and the top end portion of the pull rod 25 slides upward and extends out of the suction tube 23. The top end portion of the pull rod 25 is connected to the piston rod of the vertically arranged first hydraulic cylinder 26.

[0047] Specifically, when the extraction pipe 21, the intermediate connecting pipe 22 and the suction pipe 23 are aligned with each other, the solenoid valves on the bottom pipe openings of the extraction pipe 21 and the suction pipe 23 are opened, and the three are connected to each other. Then, the piston rod of the first hydraulic cylinder 26 is controlled to contract, so that it drives the rubber plug 24 to slide upward in the suction pipe 23 through the pull rod 25, so that the hydraulic oil in the hydraulic oil tank will enter the suction pipe 23 through the extraction pipe 21 and the intermediate connecting pipe 22, and the pull rod 25 and the top pipe opening of the suction pipe 23 are in a non-sealed state, so that the rubber plug 24 can slide freely in the suction pipe 23. When a certain amount of hydraulic oil is extracted and collected in the suction pipe 23, the solenoid valve at the bottom of the suction pipe 23 is closed, and the hydraulic oil in the intermediate connecting pipe 22 and the extraction pipe 21 will flow back into the hydraulic oil tank, and then the solenoid valve on the extraction pipe 21 is closed, so as to facilitate the quantitative and rapid extraction and collection of the hydraulic oil in the hydraulic oil, without the need for the operator to open the hydraulic oil tank manually to extract and collect the oil.

[0048] In the embodiment of the present invention, the oil diversion unit 3 includes a disc 31, a detection tube 32, a docking ring 33 and a vertical support rod 34. The disc 31 is rotatably arranged in the detection box 1, and the center of the disc 31 is connected to the servo motor through a rotating shaft. At least five detection tubes 32 are installed in a circumferential array on the disc 31, and the top end of each detection tube 32 is connected to a docking ring 33. The inner diameter of the docking ring 33 is the same as the outer diameter of the suction tube 23. The middle connecting tube 22 on the disc 31 is arranged on the same circumference as the five detection tubes 32. The top end of the servo motor is fixedly supported to the top of the detection box 1 through a vertical support rod 34.

[0049] Specifically, after the suction pipe 23 sucks a certain amount of hydraulic oil, the servo motor is controlled to work so that it drives the disc 31 to rotate in the detection box 1 through the rotating shaft. When the detection tube 32 on the disc 31 rotates to align with the suction pipe 23, the hydraulic oil extracted from the suction pipe 23 will be quantitatively injected into the detection tube 32, and then the disc 31 continues to rotate so that its multiple detection tubes 32 are aligned with the pipe openings of the suction pipe 23 in turn, so that the hydraulic oil can be injected into the multiple detection tubes 32 in equal amounts. The provided docking ring 33 can improve the accuracy of the connection between the pipe opening at the bottom end of the suction pipe 23 and the detection tube 32, so that the hydraulic oil can be accurately injected into the detection tube 32. When the suction pipe 23 does not need to extract and collect hydraulic oil, the disc 31 rotates at this time, so that the pipe opening of the suction pipe 23 can be dislocated to the middle position between the detection tube 32 and the intermediate connecting tube 22, so that the three are in a dislocated and non-connected state.

[0050] In an embodiment of the present invention, the sampling unit 2 further comprises a sliding docking assembly 4, which comprises a rubber insert 41, a sliding block 42, an elastic member 43, a connecting ear block 44, a second hydraulic cylinder 45, an insulating sleeve 46, an insulating tube 47, an electromagnetic suction block 48 and a metal strip 49. The intermediate connecting tube 22 is slidably installed in a sliding hole 311 opened on the disc 31, and the bottom end of the intermediate connecting tube 22 is connected with a rubber insert 41, and the rubber insert 41 is slidably and sealedly inserted into the extraction tube 21. At least two vertical sliding grooves 312 are vertically opened on the hole wall of the sliding hole 311, and a sliding block 42 is slidably arranged in each vertical sliding groove 312. A plurality of the sliding blocks 42 are fixedly connected to the tube wall of the intermediate connecting tube 22, and the sliding blocks 42 are connected to the intermediate connecting tube 22. The vertical elastic member 43 is connected to the groove wall of the vertical slide groove 312, at least two connecting ear blocks 44 are fixed to the top outer tube wall of the suction pipe 23, and each connecting ear block 44 is connected to the top of the detection box 1 through a second hydraulic cylinder 45 arranged vertically, the cylinder body of the first hydraulic cylinder 26 slides through the top of the detection box 1, and an insulating tube 47 is fixedly sleeved on the cylinder body, an insulating sleeve 46 is fixed at the top of the detection box 1 and the position where the cylinder body of the first hydraulic cylinder 26 slides through, and the insulating sleeve 46 is sleeved on the outside of the sliding insulating tube 47, a plurality of electromagnetic suction blocks 48 are insulated and installed on the inner ring wall of the insulating sleeve 46, a plurality of metal strips 49 are vertically fixed on the tube wall of the insulating tube 47, and each metal strip 49 is aligned and in contact with each electromagnetic suction block 48;

[0051] Specifically, in order to improve the tightness of the connection between the extraction tube 21, the intermediate connecting tube 22 and the suction tube 23, and prevent the suctioned hydraulic oil from leaking and contaminating the detection box 1, when the disc 31 drives the intermediate connecting tube 22 to rotate until the suction tube 23 and the extraction tube 21 are aligned, the electromagnetic suction block 48 on the inner ring surface of the insulating sleeve 46 is powered off and loses its magnetic adsorption force, and is separated from the adsorption and fixation of the metal strip 49 vertically fixed on the insulating tube 47. Then the piston rod of the second hydraulic cylinder 45 is extended, so that it drives the suction tube 23 to move downward through the connecting ear block 44. At this time, the cylinder body of the first hydraulic cylinder 26 will slide downward synchronously in the insulating sleeve 46. When the suction tube 23 sliding down contacts the upper pipe opening of the intermediate connecting tube 22, it will push the intermediate connecting tube 46 to move downward. 22 slides downward in the sliding hole 311, and the sliding block 42 stretches or compresses the elastic member 43 of the spring structure, and the downward sliding middle connecting tube 22 pushes the rubber insert 41 to squeeze and seal and insert into the extraction tube 21, and the lower end of the suction tube 23 is sealed and inserted into the sliding hole 311, so that the three can be sealed and connected to form a whole, so that the hydraulic oil in the hydraulic oil tank can accurately enter the suction tube 23, and prevent the generation of gaps at the connection between the extraction tube 21, the middle connecting tube 22 and the suction tube 23, which will not only affect the rapid extraction and collection effect of the hydraulic pressure in the hydraulic oil tank, but also cause the leakage of the extracted and collected hydraulic oil, thereby affecting the rapid and accurate index detection of the collected hydraulic oil;

[0052] When the suction pipe 23 is inserted into the appropriate position in the sliding hole 311, the piston rod of the second hydraulic cylinder 45 is in a stationary state, and then the multiple electromagnetic suction blocks 48 are controlled to be energized, so that they have magnetic adsorption force to adsorb and fix the metal strip 49, so that the cylinder body of the first hydraulic cylinder 26 is in a fixed state. At this time, the piston rod of the first hydraulic cylinder 26 works, so that it drives the rubber plug 24 to slide upward in the suction pipe 23 through the pull rod 25, so as to facilitate the extraction and collection of hydraulic oil in the hydraulic oil tank through the sealed intermediate connecting pipe 22 and the extraction pipe 21;

[0053] When the hydraulic oil collection is completed, the multiple electromagnetic suction blocks 48 are powered off and lose the adsorption and fixation of the metal strip 49. At this time, the cylinder body of the first hydraulic cylinder 26 is in a sliding state, and then the piston rod of the second hydraulic cylinder 45 is retracted, which will drive the suction pipe 23 to slide upward and disengage from the sliding hole 311, and the middle connecting pipe 22 slides upward in the sliding hole 311 under the elastic restoring force of the elastic member 43 of the spring structure, and the rubber insert 41 is drawn out of the extraction pipe 21, so that the disc 31 drives the multiple detection pipes 32 to rotate to the bottom of the suction pipe 23 for oil diversion;

[0054] When it is necessary to divert the collected hydraulic oil, the disc 31 rotates to the position directly below the suction pipe 23. At this time, the above method is adopted to first extend the piston rod of the second hydraulic cylinder 45. At this time, the cylinder body of the first hydraulic cylinder 26 is in a sliding state, and then the lower end of the suction pipe 23 is sealed and inserted into the docking ring 33 of the rubber material, so that the two are in a sealed connection state. Then, the cylinder body of the first hydraulic cylinder 26 is fixed, and the piston rod is extended, so that the hydraulic oil extracted from the suction pipe 23 is accurately diverted to the connected detection pipe 32, preventing the bottom end of the suction pipe 23 from being blocked. The pipe mouth and the pipe mouth of the detection tube 32 are misaligned due to the contact connection, which makes it impossible for the hydraulic oil to be accurately and quickly injected into the detection tube 32 for quality index detection; when a certain amount of hydraulic oil is injected into a detection tube 32, the piston rod of the second hydraulic cylinder 45 is retracted, and the suction tube 23 will be pulled out of the docking ring 33, and the disc 31 continues to rotate, so that the next detection tube 32 continues to be aligned with the suction tube 23, and the hydraulic oil extracted and collected in the suction tube 23 is continued to be diverted and injected into multiple detection tubes 32 to detect the quality index of the hydraulic oil.

[0055] In an embodiment of the present invention, the index detection unit 6 includes a particle counter, a moisture sensor, a viscosity sensor, a temperature sensor and a conductivity sensor, and different types of sensors are respectively installed on the plurality of detection tubes 32;

[0056] Specifically, the particle counter is used to detect the number and size of solid particles mixed in the hydraulic oil in the corresponding detection tube 32, which helps to evaluate the efficiency of the filtration system and the cleanliness level of the oil; moisture is one of the main reasons for the deterioration of hydraulic oil; the moisture sensor can continuously measure the water content in the hydraulic oil in the corresponding detection tube 32 to prevent corrosion or emulsification caused by water pollution; viscosity changes will affect the performance of the hydraulic system; the use of an online viscosity sensor can detect the oil viscosity of the hydraulic oil in the corresponding detection tube 32 to ensure that it is within the appropriate working range; too high temperature will accelerate the oxidation of the oil and affect its service life; too low temperature may increase flow resistance; and the temperature sensor can detect the oil temperature of the hydraulic oil in the corresponding detection tube 32; and the conductivity sensor can detect changes in the conductivity of the hydraulic oil, which can then reflect the content of dissolved substances (such as acidic compounds) in the oil, and indirectly judge the degree of aging of the oil.

[0057] In the embodiment of the present invention, a cleaning unit 5 is provided in the detection box 1, and the cleaning unit 5 includes a sealing plug 51, a side ear block 52, a third hydraulic cylinder 53, a flushing conduit 54, a waste conduit 55 and a connecting hose 56. A plurality of side ear blocks 52 are fixed to the top outer ring surface of the sealing plug 51, and the upper surface of each side ear block 52 is respectively connected to the piston rod of the third hydraulic cylinder 53 vertically fixed in the detection box 1. The sealing plug 51 is located directly above the rotating detection tube 32, and the sealing plug 51 is inserted into the docking ring 33 in a sliding and sealing manner. A flushing conduit 54 and a waste conduit 55 are installed on the sealing plug 51, and the bottom end of the waste conduit 55 is slidably inserted into the bottom of the detection tube 32. The bottom end of the flushing conduit 54 is located at the pipe mouth of the detection tube 32, and the other end of the flushing conduit 54 and the waste conduit 55 protrude from the outside of the detection box 1 together with the connecting hose 56;

[0058] Specifically, in order to enable the online detection system to regularly detect the quality indicators of the hydraulic oil in the hydraulic oil tank, therefore, after the oil extracted and collected last time has been tested by multiple sensors and the detected data has been transmitted to the data acquisition system for recording, the disc 31 will drive the detection tube 32 to rotate to the bottom of the sealing plug 51, and the piston rod of the third hydraulic cylinder 53 will extend, which will drive the sealing plug 51 to vertically descend and be inserted into the docking ring 33 through the side ear block 52 to seal the detection tube 32, and then control the pump body connected to the upper connecting hose 56 to work, so that it can first suck out the hydraulic oil detected in the detection tube 32 through the waste discharge conduit 55 inserted into the bottom of the tube of the detection tube 32, and then inject flushing liquid into the flushing conduit 54 through the lower connecting hose 56, so that it can The hydraulic oil remaining in the tube 32 is flushed, and the waste liquid after flushing will continue to be discharged through the waste discharge conduit 55. However, after the flushing of the detection tube 32 is completed, dry gas can be introduced into the detection tube 32 through the flushing conduit 54 to dry the flushed detection tube 32 to prevent other moisture from being mixed in the detection tube 32, which will affect the accurate detection and processing of the hydraulic oil collected subsequently by the sensor in the detection tube 32; when the flushing and drying of the detection tube 32 is completed, the piston rod of the third hydraulic cylinder 53 is retracted, so that the sealing plug 51 is pulled out and detached from the docking ring 33, and because the flushing conduit 54 and the waste discharge conduit 55 are both connected to the connecting hose 56, they will not interfere with the normal up and down sliding of the sealing plug 51, so that the disc 31 can drive the next detection tube 32 to rotate to the bottom of the sealing plug 51 for flushing.

[0059] In the embodiment of the present invention, the cleaning unit 5 further includes a sealing sleeve 57, a connecting block 58 and a fourth hydraulic cylinder 59. The waste discharge conduit 55 is sealed and slidably mounted on the sealing plug 51 through the sealing sleeve 57. A connecting block 58 is fixed at the connection between the waste discharge conduit 55 and the connecting hose 56, and the connecting block 58 is aligned with one of the side ear blocks 52. A fourth hydraulic cylinder 59 is vertically fixed on the connecting block 58, and the bottom end surface of the piston rod of the fourth hydraulic cylinder 59 is connected to the side ear block 52 directly below.

[0060] Specifically, in order to facilitate the sensor to accurately detect the hydraulic oil diverted in the detection tube 32, the piston rod of the fourth hydraulic cylinder 59 can be controlled to extend first, so that it drives the waste discharge conduit 55 to slide upward through the connecting block 58 to be flush with the bottom end of the flushing conduit 54, and the waste discharge conduit 55 can slide sealed in the sealing sleeve 57, and then the disc 31 is controlled to drive the detection tube 32 that needs to be sealed at the pipe mouth to rotate to align with the sealing plug 51, and then the piston rod of the third hydraulic cylinder 53 is extended, which can drive the sealing plug 51 to descend and insert into the rotationally aligned docking ring 33, so as to achieve sealing of the pipe mouth of the detection tube 32, so that the corresponding sensor can accurately and stably detect the accurate quality indicators of the hydraulic oil diverted from the detection tube 32.

[0061] The present invention also provides an online detection method for an online detection system of a hydraulic hoist, the detection method comprising the following steps:

[0062] S1: Oil extraction: The control module of the online detection system controls the sampling unit 2 to work, and extracts the hydraulic oil in the hydraulic oil tank into the suction pipe 23 through the cooperation of the extraction pipe 21, the intermediate connecting pipe 22 and the suction pipe 23;

[0063] S2: Oil diversion: The control module controls the servo motor in the detection box 1 to work, so that it drives the disc 31 to rotate, so that the bottom ends of the suction pipes 23 of the multiple detection tubes 32 are rotated and aligned, so that the hydraulic oil extracted from the suction pipes 23 is respectively sent into the detection tubes 32 in equal amounts;

[0064] S3: Index detection: The control module controls the corresponding particle counter, moisture sensor, viscosity sensor, temperature sensor and conductivity sensor on each detection tube 32 to work, so that the multiple sensors respectively detect the quality index of the hydraulic oil in terms of the number and size distribution of solid particles, moisture, temperature, viscosity and conductivity;

[0065] S4: Data collection: Establish a data collection system to transmit sensor data to the monitoring center in real time, set a threshold to trigger an alarm mechanism, and issue an alarm in time when the monitoring parameters exceed the set threshold.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and use the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic hoist online detection system, characterized in that: Including data acquisition system and data detection module; A data acquisition system, wherein the data acquisition system is used to transmit the data of the hydraulic oil quality index detected by the data detection module to the monitoring center in real time; A data detection module, the data detection module comprising a sampling unit (2), an oil flow distribution unit (3) and an index detection unit (6) installed in a detection box (1); A sampling unit (2), the sampling unit (2) being used to collect and sample the hydraulic oil in the hydraulic oil tank of the hydraulic system; An oil flow distribution unit (3), the oil flow distribution unit (3) being used to distribute the hydraulic oil sampled by the sampling unit (2) into a plurality of detection tubes (32); An index detection unit (6), the index detection unit (6) being used to detect the quality index of the hydraulic oil diverted in the plurality of detection tubes (32) in terms of the number and size distribution of solid particles, moisture, temperature, viscosity and conductivity; The sampling unit (2) comprises an extraction tube (21) and an intermediate connecting tube (22). The extraction tube (21) is arranged on the detection box (1), and its lower end port extends into the hydraulic oil tank, and its upper end port extends into the interior of the detection box (1). The intermediate connecting tube (22) is installed on the disc (31) of the oil diversion unit (3). The lower end port of the intermediate connecting tube (22) is detachably connected to the extraction tube (21), and the upper end port of the intermediate connecting tube (22) is detachably connected to the suction tube (23). The bottom end port of the suction tube (23) is provided with a solenoid valve, and a rubber plug (24) is provided as an internal sliding seal. A pull rod (25) is vertically fixed to the top surface of the rubber plug (24), and the top end of the pull rod (25) slides upward and extends out of the suction tube (23). The top end of the pull rod (25) is connected to the piston rod of a vertically arranged first hydraulic cylinder (26). The oil diversion unit (3) comprises a disc (31), the disc (31) is rotatably arranged in the detection box (1), and the center of the disc (31) is connected to a servo motor via a rotating shaft. At least five detection tubes (32) are installed in a circular array on the disc (31), and the top end of each detection tube (32) is connected to a docking ring (33), the inner diameter of the docking ring (33) is the same as the outer diameter of the suction tube (23), the middle connecting tube (22) located on the disc (31) is arranged on the same circumference as the five detection tubes (32), and the top end of the servo motor is fixedly supported to the top of the detection box (1) via a vertical support rod (34).

2. The hydraulic hoist online detection system according to claim 1 is characterized in that: The sampling unit (2) further comprises a sliding docking assembly (4), the sliding docking assembly (4) comprising a rubber insert (41), a sliding block (42), an elastic member (43), a connecting ear block (44), a second hydraulic cylinder (45), an insulating sleeve (46), an insulating tube (47), an electromagnetic suction block (48) and a metal strip (49), the intermediate connecting tube (22) being slidably mounted in a sliding hole (311) provided on the disc (31), and the bottom end of the intermediate connecting tube (22) being connected to the rubber insert (41), the rubber insert (41) being slidably and sealingly inserted into the extraction tube (21), at least two vertical sliding grooves (312) being vertically provided on the hole wall of the sliding hole (311), and a sliding block (42) being slidably arranged in each vertical sliding groove (312), and a plurality of the sliding blocks (42) being fixedly connected to the tube wall of the intermediate connecting tube (22), and the sliding blocks (42) being connected to the tube wall of the intermediate connecting tube (22). A vertical elastic member (43) is connected to the groove wall of the vertical slide groove (312); at least two connecting ear blocks (44) are fixed to the outer tube wall of the top of the suction pipe (23); and each connecting ear block (44) is connected to the top of the detection box (1) through a second hydraulic cylinder (45) arranged vertically; the cylinder body of the first hydraulic cylinder (26) slides through the top of the detection box (1), and an insulating tube (47) is fixedly sleeved on the cylinder body; an insulating sleeve (46) is fixed at the top of the detection box (1) and the position where the cylinder body of the first hydraulic cylinder (26) slides through, and the insulating sleeve (46) is sleeved on the outside of the sliding insulating tube (47); a plurality of electromagnetic suction blocks (48) are insulated and installed on the inner ring wall of the insulating sleeve (46); a plurality of metal strips (49) are vertically fixed on the tube wall of the insulating tube (47), and each metal strip (49) is aligned and in contact with each electromagnetic suction block (48).

3. The online detection system for hydraulic gate hoist according to claim 1 is characterized in that: The index detection unit (6) comprises a particle counter, a moisture sensor, a viscosity sensor, a temperature sensor and a conductivity sensor, and different types of sensors are respectively installed on the plurality of detection tubes (32).

4. The online detection system for hydraulic hoist according to claim 1 is characterized in that: The detection box (1) is provided with a cleaning unit (5), the cleaning unit (5) comprising a sealing plug (51), a side ear block (52), a third hydraulic cylinder (53), a flushing conduit (54), a waste discharge conduit (55) and a connecting hose (56), a plurality of side ear blocks (52) being fixed to the top outer ring surface of the sealing plug (51), and the upper surface of each side ear block (52) being respectively connected to a piston rod of a third hydraulic cylinder (53) fixed vertically in the detection box (1), the sealing plug (51) being located at a rotating detection box The sealing plug (51) is slidably and sealingly inserted into the docking ring (33) directly above the detection tube (32), and the sealing plug (51) is slidably and sealingly inserted into the docking ring (33), the sealing plug (51) is mounted with a flushing conduit (54) and a waste discharge conduit (55), and the bottom end of the waste discharge conduit (55) is slidably inserted into the bottom of the detection tube (32), the bottom end of the flushing conduit (54) is located at the tube mouth of the detection tube (32), and the other end of the flushing conduit (54) and the waste discharge conduit (55) are connected to the hose (56) and extend out of the detection box (1).

5. The hydraulic hoist online detection system according to claim 4 is characterized in that: The cleaning unit (5) further comprises a sealing sleeve (57), a connecting block (58) and a fourth hydraulic cylinder (59); the waste discharge conduit (55) is sealingly slidably mounted on the sealing plug (51) via the sealing sleeve (57); a connecting block (58) is fixed at the connection between the waste discharge conduit (55) and the connecting hose (56), and the connecting block (58) is aligned with one of the side ear blocks (52); a fourth hydraulic cylinder (59) is vertically fixed on the connecting block (58), and the bottom end surface of the piston rod of the fourth hydraulic cylinder (59) is connected to the side ear block (52) directly below.

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