CN113883130A - Manufacturing method of oil cylinder simulation test combined experiment platform - Google Patents
Manufacturing method of oil cylinder simulation test combined experiment platform Download PDFInfo
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- CN113883130A CN113883130A CN202110500566.0A CN202110500566A CN113883130A CN 113883130 A CN113883130 A CN 113883130A CN 202110500566 A CN202110500566 A CN 202110500566A CN 113883130 A CN113883130 A CN 113883130A
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- 238000012360 testing method Methods 0.000 title claims abstract description 150
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000004088 simulation Methods 0.000 title claims abstract description 16
- 238000002474 experimental method Methods 0.000 title claims description 12
- 239000000872 buffer Substances 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 6
- 238000009661 fatigue test Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000007639 printing Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 106
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010729 system oil Substances 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
- 241001070941 Castanea Species 0.000 description 1
- 235000014036 Castanea Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/007—Simulation or modelling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
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- F15B2211/855—Testing of fluid pressure systems
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Abstract
The invention discloses a method for manufacturing an oil cylinder simulation test combined experimental platform, which comprises a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve group sharing system, an oil cooling system, a high-voltage electrical appliance control system, a central control system, a pulse endurance test system, an opposite-top endurance test system, a buffer test system, a pulse rack, a buffer rack and an endurance rack, and comprises the following steps: s1, mounting a rack, and connecting and fixing the pulse rack, the buffer rack and the durable rack; compared with a delivery test bed, the hydraulic cylinder test bed has the advantages that the flow is large, the pressure is high, signals can be transmitted to a computer by using a pressure sensor, a pull pressure sensor, a displacement sensor, a proximity switch and a thermocouple, the computer automatically controls the oil cylinder to change the direction, detects the lowest starting pressure, the pull pressure, the stroke, the speed, the mechanical efficiency and the like of the hydraulic cylinder, displays corresponding performance data and curves on an interface, stores and compiles test results, and outputs printing data and curves.
Description
Technical Field
The invention relates to the technical field of hydraulic cylinder equipment, in particular to a manufacturing method of a simulation test combined experiment platform for an oil cylinder.
Background
At present, an oil cylinder test bed is mainly divided into a delivery test bed, a type test bed and a multi-stage oil cylinder test bed, wherein the delivery test bed mainly inspects test running, lowest starting pressure, pressure resistance test, leakage test and stroke test; the type test bed mainly comprises a test run, a minimum starting pressure, a pressure test, a durability test, a leakage test, a buffer test, a load efficiency test, a high-temperature test and a stroke test, and a test platform is required to be used when a simulation test is carried out.
The original delivery test bed mainly has the following defects: the buffer test could not be performed; the cylinder barrel pulse test cannot be carried out; structural endurance pulse testing cannot be performed; structural durability tests cannot be performed; the stroke sliding endurance test cannot be performed; seal durability test-a cannot be performed: testing the fatigue life; the seal endurance test-B, high temperature test, could not be performed; seal durability test-C could not be performed: testing at low temperature; the welding fatigue test of the piston rod cannot be carried out, so that a manufacturing method of the oil cylinder simulation test combined experimental platform needs to be provided.
Disclosure of Invention
The invention aims to provide a method for manufacturing an oil cylinder simulation test combined experimental platform, which has the advantages of examining various indexes of a hydraulic cylinder product, shortening the experimental period and realizing short-term mass production so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing method of an oil cylinder simulation test combined experiment platform comprises a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve group sharing system, an oil cooling system, a high-voltage electric appliance control system, a central control system, a pulse endurance test system, an opposite-ejection endurance test system, a buffer test system, a pulse rack, a buffer rack and an endurance rack, and comprises the following steps:
s1, mounting a rack, connecting and fixing the pulse rack, the buffer rack and the durable rack, and connecting and fixing the upper oil tank, the tested cylinder, the working cylinder, the multiple groups of pressure sensors, the cooler, the temperature controller, the multiple groups of electromagnetic valves, the multiple groups of reversing valves, the multiple groups of overflow valves, the oil return filter, the oil absorption filter, the high-pressure pump set, the low-pressure pump set, the pilot pump set, the oil return pump set and the filtering pump set with the pulse rack, the buffer rack and the durable rack respectively;
s2, installing a testing system, namely respectively installing a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve bank sharing system, an oil cooling system, a high-voltage electrical appliance control system, a central control system, a pulse endurance test system, an opposite-jacking endurance test system and a buffer test system on a pulse rack, a buffer rack and an endurance rack;
s3, allocating states to the devices and devices involved in the hydraulic source system, the pilot system, the pump valve oil return system, the partial valve group sharing system, the oil cooling system, the high-voltage electric appliance control system, the central control system, the pulse endurance test system, the opposite-top endurance test system and the buffer test system in the S2 to the device to be tested;
s4, carrying out tests, wherein the test contents comprise a structure endurance pulse test, a structure endurance test, a stroke sliding endurance test, a sealing element endurance test-A, a fatigue life test, a sealing element endurance test-B, a high temperature test and a piston rod welding fatigue test;
and S5, recording data, and recording data items in the test process and after the test to obtain a test result.
Preferably, the structural endurance pulse test described in S4 includes: the durability strength of the cylinder barrel, the strength of the welding part of the cylinder barrel and the strength of the screw thread of the bolt.
Preferably, the structural endurance test in S4 includes: the strength of the welding part of the oil cylinder, the strength of the rod head, the strength of the bottom of the lever barrel, the strength of the piston rod, the existence of looseness of the screwing part and the looseness of a sealing element.
Preferably, the stroke slip endurance test in S4 includes: performance, durability of sliding portions, durability of sealing members, strength of piston rods, and presence or absence of looseness of tightening portions.
Preferably, the stroke slip endurance test in S4 includes: performance, durability of sliding portions, durability of sealing members, strength of piston rods, and presence or absence of looseness of tightening portions.
Preferably, the seal durability test-a in S4 includes: fatigue life testing and sealing performance.
Preferably, the seal durability test-B in S4 includes a high temperature test, a sealing performance, and a seal high temperature resistance.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention solves the problem that the original delivery test bed can not carry out buffer test; the cylinder barrel pulse test cannot be carried out; structural endurance pulse testing cannot be performed; structural durability tests cannot be performed; the stroke sliding endurance test cannot be performed; seal durability test-a cannot be performed: testing the fatigue life; the seal endurance test-B, high temperature test, could not be performed; seal durability test-C could not be performed: testing at low temperature; the problem that the welding fatigue test of the piston rod cannot be carried out;
2. compared with a delivery test bed, the hydraulic cylinder test bed has the advantages that the flow is large, the pressure is high, signals can be transmitted to a computer by using a pressure sensor, a pull pressure sensor, a displacement sensor, a proximity switch and a thermocouple, the computer automatically controls the oil cylinder to change the direction, detects the lowest starting pressure, the pull pressure, the stroke, the speed, the mechanical efficiency and the like of the hydraulic cylinder, displays corresponding performance data and curves on an interface, stores and compiles test results, and outputs printing data and curves.
Drawings
FIG. 1 is a schematic diagram of a pulse test of an oil cylinder according to the present invention;
FIG. 2 is a schematic view of a durable roof test stand according to the present invention;
FIG. 3 is a schematic diagram of a simulated endurance test and a cushioning test according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a manufacturing method of an oil cylinder simulation test combined experiment platform comprises a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve group sharing system, an oil cooling system, a high-voltage electric appliance control system, a central control system, a pulse endurance test system, an opposite-ejection endurance test system, a buffer test system, a pulse rack, a buffer rack and an endurance rack, and comprises the following steps:
s1, mounting a rack, connecting and fixing the pulse rack, the buffer rack and the durable rack, and connecting and fixing the upper oil tank, the tested cylinder, the working cylinder, the multiple groups of pressure sensors, the cooler, the temperature controller, the multiple groups of electromagnetic valves, the multiple groups of reversing valves, the multiple groups of overflow valves, the oil return filter, the oil absorption filter, the high-pressure pump set, the low-pressure pump set, the pilot pump set, the oil return pump set and the filtering pump set with the pulse rack, the buffer rack and the durable rack respectively;
s2, installing a testing system, namely respectively installing a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve bank sharing system, an oil cooling system, a high-voltage electrical appliance control system, a central control system, a pulse endurance test system, an opposite-jacking endurance test system and a buffer test system on a pulse rack, a buffer rack and an endurance rack;
s3, allocating states to the devices and devices involved in the hydraulic source system, the pilot system, the pump valve oil return system, the partial valve group sharing system, the oil cooling system, the high-voltage electric appliance control system, the central control system, the pulse endurance test system, the opposite-top endurance test system and the buffer test system in the S2 to the device to be tested;
s4, carrying out tests, wherein the test contents comprise a structure endurance pulse test, a structure endurance test, a stroke sliding endurance test, a sealing element endurance test-A, a fatigue life test, a sealing element endurance test-B, a high temperature test and a piston rod welding fatigue test;
and S5, recording data, and recording data items in the test process and after the test to obtain a test result.
The structural endurance pulse test described in S4 includes: the durability strength of the cylinder barrel, the strength of the welding part of the cylinder barrel and the strength of the screw thread of the bolt.
The structural endurance test in S4 includes: the strength of the welding part of the oil cylinder, the strength of the rod head, the strength of the bottom of the lever barrel, the strength of the piston rod, the existence of looseness of the screwing part and the looseness of a sealing element.
The stroke slip endurance test in S4 includes: performance, durability of sliding portions, durability of sealing members, strength of piston rods, and presence or absence of looseness of tightening portions.
The stroke slip endurance test in S4 includes: performance, durability of sliding portions, durability of sealing members, strength of piston rods, and presence or absence of looseness of tightening portions.
The seal durability test-a in S4 includes: fatigue life testing and sealing performance.
The seal durability test-B described in S4 includes a high temperature test, sealing performance, and seal high temperature resistance.
One end of the pressure sensor is connected with the port A of the tested cylinder, and the other end of the pressure sensor is connected with the port B of the tested cylinder; two ends of the cooler are respectively communicated with the oil tank and the first electromagnetic valve; a hydraulic chestnut, a first overflow valve YV1, a second overflow valve YV4 and a third overflow valve YV5 are arranged between the tested cylinder and the oil tank, and a fourth overflow valve YV6 and a fifth overflow valve YV33 form a large-flow hydraulic power source;
one ends of oil inlets YV11 and YV12 of the first electromagnetic directional valve are connected with a YV4 overflow valve through a one-way valve, one ends of a second electromagnetic directional valve YV13 and a second electromagnetic directional valve YV14 are connected with an overflow valve YV5 through a one-way valve, an output port of the first electromagnetic directional valve is converged with an output port of the second electromagnetic valve and then is respectively communicated with a Hawai valve H1 and a Hawai valve H2, and the end of the Hawai valve H2 is communicated with a rod cavity of a tested cylinder;
one end of the pilot valve group YVI is communicated with a YV21\ YV22\ YV1YV20 electromagnetic directional valve, one end of the Hawei valve H1 is communicated with a rodless cavity of the tested cylinder, and the oil outlet end of the YV1\ YV4\ YV5\ YV6 electromagnetic directional valve is communicated with an oil return filter; an electromagnetic reversing valve YV21\ YV19\ YV11\ YV12\ YV13YV14 is arranged between the tested cylinder and the oil tank and returns oil to an oil return tank PV8 pump group, YV29\ YV30 respectively detects and feeds back high and low pressure stress values to read and collect, a P6 pump and a YV6 overflow valve of a high pressure system open a YV25\ YV26 overflow valve at the moment when the low pressure rises to the highest pressure, the H1\ H2 Hawei valve is closed after 0.5 second of delay, then the YV1\ YV19\ YV21 is opened at the moment of 1 second of pressure maintaining, the previous process is converted, and 120 ten thousand times of repeated tests are carried out;
according to the principle that a protection item has high flow rate and low pressure pump double-pump confluence and a low flow rate and high pressure pump loads a pilot control one-way valve unloading, on the basis of detecting buffering time, a sensor oil port is machined and installed in an oil cylinder buffer area, sensors are respectively installed at buffering positions, when a piston rod buffer area is connected to a buffer sleeve, a pressure sensor instantly sends a galvanic couple to a module for conversion and then outputs the galvanic couple to a central control system through a PLC (programmable logic controller), a pulse curve is formed, and then printing is stored;
the opposite-jacking endurance test is characterized in that a set of three-way valve bank, a set of working oil cylinder, a set of tested oil cylinder, a path of hydraulic source entering working oil cylinder and a path of hydraulic oil entering tested oil cylinder are added, the working cylinder is 0.3 times larger than the tested oil cylinder, when the same pressure is input again, the working cylinder will forcibly move in a backpressure state, a backpressure unloading valve is respectively installed in an A/B cavity of the working oil cylinder, when the pressure exceeds a set value, a BY 1/BY 2 backpressure valve is opened to release the pressure, the backpressure operation is always kept, a protection item principle is used BY a large cylinder top small cylinder, and a backpressure unloading valve principle is added to complete the opposite-jacking endurance opposite-jacking test;
the pulse endurance test is characterized in that a high-pressure system, a low-pressure system, a common pilot system, a filtering circulation system and a protection item low-pressure P3 pump are applied, an YV3 overflow valve is opened, electromagnetic directional valves YV 9/YV 10 are opened to control oil to enter an H3/H4 Hawei one-way valve, then a P2 high-pressure pump is started, YV2 is opened to respectively control YV 23/YV 24 to work, YV 27/YV 28 respectively displays a pressure pulse peak value, the pressure pulse peak value is unloaded and reversed through YV1, YV 17/YV 15 control H3/H4, a couple signal fed back by a YV 27/YV 28 pressure sensor is transmitted to a central control system after module conversion, a pulse curve is formed and then is stored and printed;
wherein the total power configuration of the test bed comprises 2KW pump sets, 1 KW pump set 22, 2KW pump sets 7.5, 1 KW pump set 5.5, 1 KW pump set 2.2, 3 KW heating pipes 12 and 16.8KW refrigerating system; requiring a set of strong current control cabinets (pulse, endurance test stand, filtering, cooling strong current); the weak current control cabinet machine tool is provided with two sets (2 sets of control systems of an integrated industrial personal computer, a PLC and a touch screen are configured, and a durability experiment unit and a pulse experiment unit are respectively arranged) of a shared cooling system, a filtering system and a pilot system;
pulse system configuration: consists of P1, P2, P3 and P7 pump groups; the system valve group overflow valve consists of a serial number pilot YVI, a pulse high-pressure overflow YV2 and a pulse low-pressure overflow YV 3; the system comprises electromagnetic directional valves, rodless cavities YV15, YV16, rod cavity electromagnetic directional YV17, YV18 high-pressure electromagnetic one-way valves YV23 and YV24, pressure sensors YV27 and YV28, and low-pressure electromagnetic directional (internal control internal leakage) YV9 and YV 10;
durable buffer system configuration: the electromagnetic overflow valve consists of p1, p4, p5, p6 and p7 pumps, wherein the electromagnetic overflow serial number is as follows: the system comprises a pilot overflow valve YV1, a low-pressure overflow valve YV4, a low-pressure overflow valve YV5 and a high-pressure overflow valve YV6, electromagnetic directional valve pilot valves YV19, YV20, YV21 and YV22, rodless cavity electromagnetic directional valves YV1 and 1YV13, a rod cavity YV12YV14, high-pressure electromagnetic check valves YV25 and YV26, pressure sensors YV29 and YV30, and tested cylinder pressure sensors YV31 and YV 32.
The working principle is as follows: the working state of a system pressure gauge, a pilot pump P1, a low-pressure pump P3, a P5, a high-pressure pump P6, an oil collecting pump P8, a filter pump P8, a universal cooler and a temperature control meter is set, a control mode P8, a P8 and a P8 pump are started, then YI overflow valves YVI, YV 8/YV 8 are in a normal working state, when the electromagnetic valve YV 8/YV 8 is opened, a confluence hydraulic source path H8 valve enters the oil cylinder, the oil cylinder works, when the oil cylinder reaches a stroke range, YV 8/YV 8 is delayed for 0.5 seconds to be closed, and when YV 8/YV 8 high-pressure pumps start to pressurize until a rodless cavity A finishes working, a YV 8 sends out a signal, the YV 8/YV 8 unloading is started to be unloaded through a PLC system, and when the unloading is finished, the YV 8/Y8, the unloading is started, and the YV 8/Y8 enters a delay system 8, and a setting value 8, and a YV 8, a Y is started to start a Y, a Y8, a Y8, a Y8, a Y, a, a YV30 returns a signal to the PLC system to send a signal YV1\ YV19 to electrify and unload to complete one reciprocating motion;
the oil return system is provided with Y3 and Y4 control system oil return heights, when the oil return system reaches a linear position, the oil return system is automatically started through a P8 pump, enters a working oil tank through a filter and returns to the working oil tank, the oil tank consists of essential oil YX 1-a crude oil tank YX2, YX1 and YX2 oil tanks are respectively controlled by Y1 and Y2 liquid level controllers, the oil precision is guaranteed through a G1 filter through a P7 pump, temperature sensors GY1 and GY2 are arranged on the oil tanks, heating pipes JL2 are respectively arranged in the two oil tanks for 48KW in total, the experimental oil tank is started to work after the oil tank reaches a set temperature according to experimental requirements, the temperature controller is closed when the temperature reaches the set value, a sensor feedback signal is sent to the system cooler to be started after the system works for a period of time, the temperature of the system cooler is kept to be tested, the temperature condition is kept until the tested cylinder finishes 120 thousands of round trip, and 700Km is recorded;
by arranging a universal oil tank, a working cylinder A, a tested cylinder B, a pressure sensor YV31\ YV32, a system pressure gauge, a pilot pump P1, a low-pressure pump P3, a P5, a high-pressure pump P6, an oil collecting pump P8 and a filter pump P7, wherein a universal cooler and a temperature controller form a working state, a control mode P1, P3, P5 and P6 are started, at the moment, a YI overflow valve YVI, a YV4\ YV5 are in a normal working state, when a solenoid valve YV11\ YV13 is opened, a confluence hydraulic source path H1 valve enters a three-way reversing valve 2DT and is opened, at the moment, one path enters a rod cavity B port of the working cylinder oil cylinder, and the other path enters a rod cavity A port of the tested cylinder, at the moment, the oil working cylinder is larger than the tested cylinder, the pressure forms deviation, a pressed unloading valve is installed in front cavity and the tested cylinder, when the oil cylinder reaches a set value, the oil cylinder directly returns to the oil tank, when the YV11 range, a stroke range of the oil cylinder reaches the YV 465, a pressure sensor YV 585 and a PLC YV 585 and sends out a pressure maintaining signal YV 573 signal, after unloading, YV12\ YV14 reversing combined flow enters a three-way reversing valve 3DT through an H2 valve to be opened, at the moment, one path of oil enters a rod cavity A port of an oil cylinder of a working cylinder, and the other path of oil enters a rod cavity A port of a tested cylinder, at the moment, the oil working cylinder is larger than the tested cylinder, pressure forms deviation, a pressed unloading valve is arranged in front and rear cavities of the tested cylinder, the oil of the tested cylinder directly returns to an oil tank when the oil cylinder works to a set value, the oil enters a rod cavity A to start working when the oil cylinder reaches a stroke range, YV12\ YX14 is closed for pressure maintaining for 1 second when the stroke reaches the range, and simultaneously YV32 returns a signal to a PLC system to send a signal YV22\ YV20 to electrify unload and complete one-round-trip movement;
the oil return system is provided with Y3\ Y4 control system oil return height, when reaching a linear position, the oil return system is automatically started through a P8 pump, enters a working oil tank through a filter and returns to the working oil tank, the oil tank consists of essential oil YX 1-a crude oil tank YX2, YX1\ YX2 oil tanks are respectively controlled by Y1\ Y2 liquid level controllers, the oil precision is guaranteed through a G1 filter through a P7 pump, temperature sensors GY1\ GY2 are arranged on the oil tanks, heating pipes JL2 are respectively arranged in the two oil tanks to share 48KW, the experimental oil tank is started to work after reaching a set temperature according to experimental requirements, the temperature controller is closed when the temperature reaches the set value, a sensor feedback signal is provided for starting a system cooler after the system works for a period of time, the temperature condition of the tested cylinder is kept until the tested cylinder finishes 120 million round trip, and 700Km is recorded;
by arranging a general oil tank, a tested cylinder, a pressure sensor YV27\ YV28, a system pressure gauge, a pilot pump P1, a low-pressure pump P2, a high-pressure pump P3, a filter pump P7, a general cooler and a temperature control meter to form a working state and control modes P1, P2 and P3 pumps are started, at the moment, a YI overflow valve YVI, YV2\ YV3 are in a normal working state, when an electromagnetic valve YV9 is opened, a hydraulic source path H3 valve enters an oil cylinder, the oil cylinder works, when the oil cylinder reaches a stroke range, YV17 is delayed for 0.5 second to be closed, a YV2 high-pressure pump and a YV24 high-pressure pump start to be pressurized until a rodless cavity A finishes working, a YV27 pressure sensor sends a signal to instruct the electromagnetic valve YV1\ YV17 to open and unload through a PLC system, when unloading finishes YV3\ YV10 reversing hydraulic oil flows into a rod cavity B to start to work through H4, when the stroke reaches the range, YV11\ YX15 is delayed to be closed, and when YV2\ YV23 is opened and pressurized to a system set value, a YV28 return signal is sent by the PLC system, a signal YV1\ YV15 is electrified to finish unloading and reciprocating movement;
the oil return is directly returned to the oil tank, the oil tank is divided into refined oil YX 1-crude oil tank YX2, the YX 1/YX 2 oil tank is respectively controlled by Y1/Y2 liquid level controllers, the oil precision is guaranteed through a G1 filter by a P7 pump, a temperature sensor GY 1/GY 2 is arranged on the oil tank, the two oil tanks are respectively provided with a heating pipe JL2 group with 48KW, the oil tank can work after the experiment is started according to the experiment requirement and the set temperature condition is met, the temperature controller is closed when the temperature reaches the set value, a sensor feedback signal is sent to a system cooler to be opened after the temperature rises after the system works for a period of time until the temperature condition of the tested cylinder is kept, and the alternate pressurization of the oil ports on the two sides is completed by 30 thousands under the condition that the experiment pressure is 1.5 times of the working pressure of the oil tank, so as to meet the experiment condition.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The manufacturing method of the oil cylinder simulation test combined experiment platform comprises a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve group sharing system, an oil cooling system, a high-voltage electric appliance control system, a central control system, a pulse endurance test system, an opposite-ejection endurance test system, a buffer test system, a pulse rack, a buffer rack and an endurance rack, and is characterized by comprising the following steps of:
s1, mounting a rack, connecting and fixing the pulse rack, the buffer rack and the durable rack, and connecting and fixing the upper oil tank, the tested cylinder, the working cylinder, the multiple groups of pressure sensors, the cooler, the temperature controller, the multiple groups of electromagnetic valves, the multiple groups of reversing valves, the multiple groups of overflow valves, the oil return filter, the oil absorption filter, the high-pressure pump set, the low-pressure pump set, the pilot pump set, the oil return pump set and the filtering pump set with the pulse rack, the buffer rack and the durable rack respectively;
s2, installing a testing system, namely respectively installing a hydraulic source system, a pilot system, a pump valve oil return system, a partial valve bank sharing system, an oil cooling system, a high-voltage electrical appliance control system, a central control system, a pulse endurance test system, an opposite-jacking endurance test system and a buffer test system on a pulse rack, a buffer rack and an endurance rack;
s3, allocating states to the devices and devices involved in the hydraulic source system, the pilot system, the pump valve oil return system, the partial valve group sharing system, the oil cooling system, the high-voltage electric appliance control system, the central control system, the pulse endurance test system, the opposite-top endurance test system and the buffer test system in the S2 to the device to be tested;
s4, carrying out tests, wherein the test contents comprise a structure endurance pulse test, a structure endurance test, a stroke sliding endurance test, a sealing element endurance test-A, a fatigue life test, a sealing element endurance test-B, a high temperature test and a piston rod welding fatigue test;
and S5, recording data, and recording data items in the test process and after the test to obtain a test result.
2. The manufacturing method of the oil cylinder simulation test combined experimental platform according to claim 1, characterized in that: the structural endurance pulse test described in S4 includes: the durability strength of the cylinder barrel, the strength of the welding part of the cylinder barrel and the strength of the screw thread of the bolt.
3. The manufacturing method of the oil cylinder simulation test combined experimental platform according to claim 1, characterized in that: the structural endurance test in S4 includes: the strength of the welding part of the oil cylinder, the strength of the rod head, the strength of the bottom of the lever barrel, the strength of the piston rod, the existence of looseness of the screwing part and the looseness of a sealing element.
4. The manufacturing method of the oil cylinder simulation test combined experimental platform according to claim 1, characterized in that: the stroke slip endurance test in S4 includes: performance, durability of sliding portions, durability of sealing members, strength of piston rods, and presence or absence of looseness of tightening portions.
5. The manufacturing method of the oil cylinder simulation test combined experimental platform according to claim 1, characterized in that: the stroke slip endurance test in S4 includes: performance, durability of sliding portions, durability of sealing members, strength of piston rods, and presence or absence of looseness of tightening portions.
6. The manufacturing method of the oil cylinder simulation test combined experimental platform according to claim 1, characterized in that: the seal durability test-a in S4 includes: fatigue life testing and sealing performance.
7. The manufacturing method of the oil cylinder simulation test combined experimental platform according to claim 1, characterized in that: the seal durability test-B described in S4 includes a high temperature test, sealing performance, and seal high temperature resistance.
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| CN202110500566.0A CN113883130A (en) | 2021-05-08 | 2021-05-08 | Manufacturing method of oil cylinder simulation test combined experiment platform |
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| CN117108593A (en) * | 2023-10-23 | 2023-11-24 | 莱州兴达液压机械科技有限公司 | Hydraulic mechanical locking oil cylinder simulation test device |
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