CN211262682U - Servo electric cylinder reliability experimental device based on load spectrum - Google Patents
Servo electric cylinder reliability experimental device based on load spectrum Download PDFInfo
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- CN211262682U CN211262682U CN201922412923.9U CN201922412923U CN211262682U CN 211262682 U CN211262682 U CN 211262682U CN 201922412923 U CN201922412923 U CN 201922412923U CN 211262682 U CN211262682 U CN 211262682U
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Abstract
The utility model discloses a servo electric cylinder reliability experimental apparatus based on load spectrum, which overcomes the problem that the failure reason of the servo electric cylinder can not be analyzed in the prior art, and comprises a servo electric cylinder reliability experimental bench and a data measurement processing platform; the servo electric cylinder reliability experiment table comprises No. 1 to No. 5 experiment stations with the same structure, an auxiliary structure and a temperature and humidity experiment box; the data measurement processing platform comprises a data measurement part and a data processing part; the temperature and humidity experiment box is buckled on the experiment station No. 1, and the auxiliary structure is arranged at the right end of the experiment station No. 5; the data processing part is arranged on the left side of the servo electric cylinder reliability experiment table; the data measurement part is arranged on the No. 1 experiment station to the No. 5 experiment station, and the data processing part is in line connection with the data measurement part.
Description
Technical Field
The utility model relates to a reliability experiment device to servo electronic jar, more exactly, the utility model relates to a servo electronic jar reliability experiment device based on load spectrum.
Background
Because servo electronic jar energy-conservation is clean, long service life, advantages such as operation maintenance are simple, make servo electronic jar use extensively in many industrial equipment, the pneumatic cylinder simple structure is compared to servo electronic jar equally, and the reliability is high. The servo electric cylinder is a modularized product obtained by integrally designing a servo motor and a lead screw, and converts the rotary motion of the servo motor into linear motion; simultaneously, the best advantages of the servo motor are as follows: accurate rotating speed control, accurate revolution control, accurate torque control, accurate speed control, accurate position control and accurate thrust control are reserved, and therefore a high-precision linear motion series product is achieved. The servo electric cylinder can be widely applied to experimental equipment such as a high-frequency vibration table, a high-frequency impact table and the like: like elevating platform, digit control machine tool, professional equipment: for military equipment such as radar support frames, mine sweeping mechanical arms and the like. Obviously, the servo electric cylinder has wide application in various fields; but the servo electric cylinder also has its problems: during the working process of the servo electric cylinder, some abrasion and impact can occur in the cylinder body, so that the service life of part of elements in the servo electric cylinder is influenced, and the service life of the servo electric cylinder is indirectly influenced; therefore, a corresponding reliability experiment device needs to be built for the problems which are easily generated when the servo electric cylinder works, reliability experiments are carried out, and data acquisition, analysis and prediction are carried out on the problems which are easily generated, so that operating personnel can timely get rid of the faults, and life and property losses are avoided; in addition, in the important scientific and technological special item of national high-grade numerical control and basic manufacturing equipment, the first research on the research of common technologies is 'reliability design and performance experiment technology', the reliability work is the struggle with the fault, and therefore the diagnosis and early warning of the fault are very important.
Disclosure of Invention
The utility model aims to solve the technical problem that the inefficacy reason of having overcome prior art existence can't carry out the problem of analysis to servo electronic jar provides a servo electronic jar reliability experiment device based on load spectrum.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize: the servo electric cylinder reliability experiment device based on the load spectrum comprises a servo electric cylinder reliability experiment table and a data measurement processing platform;
the servo electric cylinder reliability experiment table comprises an experiment station No. 1, an experiment station No. 2, an experiment station No. 3, an experiment station No. 4, an experiment station No. 5, an auxiliary structure and a temperature and humidity experiment box; wherein: the structure composition of the No. 1 experiment station, the No. 2 experiment station, the No. 3 experiment station, the No. 4 experiment station and the No. 5 experiment station is the same;
the data measurement processing platform comprises a data measurement part and a data processing part;
the experiment station No. 1, the experiment station No. 2, the experiment station No. 3, the experiment station No. 4 and the experiment station No. 5 are placed side by side from left to right, the temperature and humidity experiment box is buckled on the experiment station No. 1, and the auxiliary structure is installed at the right end of the experiment station No. 5; the data processing part is arranged on a foundation on the left side of the servo electric cylinder reliability experiment table; the data measurement part is installed on No. 1 experiment station, No. 2 experiment station, No. 3 experiment station, No. 4 experiment station and No. 5 experiment station, adopts the line connection between data measurement part and the data processing part.
The technical scheme is that the data measurement part is arranged on a No. 1 experiment station, a No. 2 experiment station, a No. 3 experiment station, a No. 4 experiment station and a No. 5 experiment station, namely that the data measurement part comprises 10 contact infrared sensors with the same structure, 5 pull pressure sensors with the same structure, 10 speed sensors with the same structure, 10 acceleration sensors with the same structure and 10 vibration sensors with the same structure;
the contact type infrared sensor is an infrared sensor with the model number of SE2470, one end of the contact type infrared sensor is provided with a threaded cylindrical standard part, 10 contact type infrared sensors with the same structure are fixedly connected in threaded blind holes in top end beams of 10 infrared sensor supporting frames with the same structure in the No. 1 experiment station to the No. 5 experiment station through threads, and measuring ends of 10 contact type infrared sensors with the same structure are in contact with the middle positions of 5 experiment servo electric cylinders with the same structure and the cylinder bodies of 5 load servo electric cylinders with the same structure; the pull pressure sensor adopts a pull pressure sensor with the model number of SO8P5, and 5 pull pressure sensors with the same structure are adhered between 10 pressure sensor fixing pieces with the same structure in the No. 1 experiment station to the No. 5 experiment station;
the speed sensors are SCA1000-D01 speed sensors, and 10 speed sensors with the same structure are adhered to an experiment platform in an experiment station between 5 experiment servo electric cylinders with the same structure and 5 load servo electric cylinders with the same structure back to back and are positioned in front of push rods of the servo electric cylinders; the acceleration sensor adopts an acceleration sensor with the model number of 352A73, and 10 acceleration sensors with the same structure are respectively adhered to an experiment platform in an experiment station between 5 experiment servo electric cylinders with the same structure and 5 load servo electric cylinders with the same structure in a back-to-back manner, are positioned in front of push rods of the servo electric cylinders, and are positioned in front of speed sensors; the vibration sensor is a LTZ-50KA vibration sensor, and 10 vibration sensors with the same structure are respectively adhered to the front part and the bottom part of a cylinder body of 5 experimental servo electric cylinders with the same structure.
The technical scheme is that the data measurement part and the data processing part are connected by adopting a line, and the line connection is as follows: the data measuring part comprises 10 contact infrared sensors with the same structure, 5 pull pressure sensors with the same structure, 10 speed sensors with the same structure, 10 acceleration sensors with the same structure and 10 vibration sensors with the same structure; the output interfaces of 2 contact infrared sensors with the same structure in the No. 1 experiment station are connected with a CH1 interface and a CH2 interface of a first data acquisition card in the data processing part, the output interfaces of 2 acceleration sensors with the same structure are connected with a CH3 interface and a CH4 interface of the first data acquisition card, the output interfaces of 2 vibration sensors with the same structure are connected with a CH5 interface and a CH6 interface of the first data acquisition card, and the output interfaces of 2 speed sensors with the same structure are connected with a CH7 interface and a CH8 interface of the first data acquisition card; the same principle is that:
2 contact infrared sensors with the same structure, 2 vibration sensors with the same structure, 2 speed sensors with the same structure and 2 acceleration sensors with the same structure in the No. 2 experiment station are connected with a second data acquisition card in the same connection mode in the No. 1 experiment station; 2 contact infrared sensors with the same structure, 2 vibration sensors with the same structure, 2 speed sensors with the same structure and 2 acceleration sensors with the same structure in the No. 3 experiment station are connected with a third data acquisition card in the same connection mode in the No. 1 experiment station; 2 contact infrared sensors with the same structure, 2 vibration sensors with the same structure, 2 speed sensors with the same structure and 2 acceleration sensors with the same structure in the No. 4 experiment station are connected with a fourth data acquisition card in the same connection mode in the No. 1 experiment station; 2 contact infrared sensors with the same structure, 2 vibration sensors with the same structure, 2 speed sensors with the same structure and 2 acceleration sensors with the same structure in the No. 5 experiment station are connected with a fifth data acquisition card in the same connection mode in the No. 1 experiment station; and 5 pulling pressure sensors with the same structure in the No. 1 experiment station, the No. 2 experiment station, the No. 3 experiment station, the No. 4 experiment station and the No. 5 experiment station are sequentially connected to a CH1 interface, a CH2 interface, a CH3 interface, a CH4 interface and a CH5 interface in a sixth data acquisition card.
The No. 1 experiment station in the technical scheme comprises an experiment platform, an experiment part, 2 contact infrared sensor support frames with the same structure and 2 pull pressure sensor fixing pieces with the same structure; the experimental part comprises an experimental servo electric cylinder and a load servo electric cylinder which are tested electric cylinders; the experimental servo electric cylinder and the load servo electric cylinder are installed at two longitudinal ends of the experimental platform by screws and through fixing bases on the experimental servo electric cylinder and the load servo electric cylinder, the experimental servo electric cylinder and the load servo electric cylinder are installed oppositely, and the rotation axes of the experimental servo electric cylinder and the load servo electric cylinder push rod are collinear and parallel to the longitudinal symmetry line of the experimental platform; the device comprises an experiment platform, 2 contact infrared sensor support frames, a load servo electric cylinder, a; the 2 pulling pressure sensor fixing pieces are installed on the push rod of the experimental servo electric cylinder and the push rod extending end of the load servo electric cylinder through threaded connection.
The auxiliary structure in the technical scheme comprises a pulley support frame, pulleys, a steel wire and an object stage; the pulley support frame is a door-shaped non-standard part, bolt holes for mounting screws are formed in two sides of the fixed bottom end, and a cylindrical top end beam is used for supporting the pulley; the pulley support frame is fixed at the right end edge of the experiment platform in the No. 5 experiment station through fixing the bottom end and adopting screws, the pulley is sleeved on a top end beam in the pulley support frame, and the pulley is in sliding connection with the top end beam of the pulley support frame; the one end welding of 2 steel wires is on 2 pressure sensor fixed sheets that the structure is the same in No. 5 experiment stations, and the other end welding of 2 steel wires is on the objective table, and 2 steel wires are walked around and are connected with pulley surface contact.
The data processing part in the technical scheme comprises a computer desk, a computer display, a computer host, a keyboard and 6 data acquisition cards with the same structure; the data acquisition card adopts 8-channel data acquisition cards with the model of SG-AD-Modbus-8V, each data acquisition card is provided with 8 interfaces, and 6 data acquisition cards with the same structure are stacked; the computer display, the computer host, the keyboard and 6 data acquisition cards with the same structure are sequentially placed on the computer desk; the computer display and keyboard are connected with the output interfaces of 6 data acquisition cards with the same structure and the USB interface of the computer host.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the load of the servo electric cylinder reliability experiment device based on the load spectrum also adopts the servo electric cylinder, so that dynamic loading can be carried out, data acquisition and measurement can be carried out, the experiment efficiency is improved, and the experiment cost is saved;
2. the servo electric cylinder reliability experiment device based on the load spectrum adopts a contrast experiment of different speed gradients, and can analyze and compare the damage to the servo electric cylinder caused by impact at different speeds;
3. the servo electric cylinder reliability experiment device based on the load spectrum considers the influence of air humidity on the service life of the servo electric cylinder, and is provided with a contrast experiment; meanwhile, the influence of different humidity on the servo electric cylinder can be researched by adjusting the humidity of the temperature and humidity experiment box;
4. the servo electric cylinder reliability experiment device based on the load spectrum considers the condition that the push rod is subjected to radial force when the electric cylinder actually works, loads the push rod, sets a contrast experiment, and explores the influence of unbalance loading on the service life of the servo electric cylinder;
5. the servo electric cylinder reliability experiment device based on the load spectrum is provided with the speed sensor and the acceleration sensor, dynamic analysis can be carried out by controlling the extension speed of the push rod, and the impact force received by the electric cylinder is indirectly controlled, so that the reliability experiment based on the load spectrum is realized;
6. the servo electric cylinder reliability experiment device based on the load spectrum can measure the stress, the speed, the acceleration, the temperature and the vibration frequency of the experiment device in real time; from multi-angle comprehensive analysis such as statics, dynamics, kinematics, the angle that detects from the multidimension degree is to influencing the factor analysis of servo electronic jar life-span.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is an axonometric projection view of the structural components of the servo electric cylinder reliability experiment device based on the load spectrum;
FIG. 2 is an axonometric projection view of the structural components of the data processing part in the load spectrum-based servo electric cylinder reliability experiment device;
fig. 3 is an axonometric projection view of the structural components of the servo electric cylinder reliability experiment table in the load spectrum-based servo electric cylinder reliability experiment device;
FIG. 4 is an axonometric projection view of a structural component of an experimental station in the load spectrum-based servo electric cylinder reliability experimental device;
FIG. 5 is a block flow diagram of a test method employing a load spectrum based servo electric cylinder reliability apparatus;
in the figure: the experimental device comprises an A.1 experimental station, a B.2 experimental station, a C.3 experimental station, a D.4 experimental station, an E.5 experimental station, a1 computer desk, a 2 computer display, a 3 computer host, a 4 data acquisition card, a 5 temperature and humidity experimental box, a 6A experimental servo electric cylinder, a 6B load servo electric cylinder, a7 contact type infrared sensor supporting frame, an 8 pulling pressure sensor fixing piece, a 9 pulley supporting frame, a10 pulley, a 11 steel wire, a 12 objective table, a 13 contact type infrared sensor, a 14 pulling pressure sensor, a 15 speed sensor, a 16 acceleration sensor, a 17 vibration sensor and an 18 experimental platform.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
the utility model analyzes the factors influencing the service life of the servo electric cylinder, simulates the actual working condition of the servo electric cylinder, and researches the influence of the factors such as force, humidity, temperature, speed and the like on the service life of the servo electric cylinder by a way of contrast experiment; mainly set up:
under the condition that other conditions are the same, the influence of humidity on the service life of the servo electric cylinder is avoided;
under the condition that other conditions are the same, the extension speed of the push rod has influence on the service life of the servo electric cylinder;
under the condition that other conditions are the same, and whether the influence of radial load on the service life of the servo electric cylinder exists or not, three groups of comparison tests are carried out.
In addition, the utility model also measures the physical factors which mainly affect the servo electric cylinder; the influence curve of the speed, the temperature and the force on the service life of the servo electric cylinder can be established through the measured data.
Referring to fig. 1, servo electronic jar reliability experiment device based on load spectrum include servo electronic jar reliability experiment platform and data measurement processing platform.
The servo electric cylinder reliability experiment table comprises an experiment station A No. 1, an experiment station B No. 2, an experiment station C No. 3, an experiment station D No. 4, an experiment station E No. 5, an auxiliary structure and a temperature and humidity experiment box 5; the structure composition of the experiment station A No. 1, the experiment station B No. 2, the experiment station C No. 3, the experiment station D No. 4 and the experiment station E No. 5 are the same;
referring to fig. 3, the 1 experiment station includes 1 experiment platform 18, an experiment part, 2 contact infrared sensor support frames 7 with the same structure, and 2 tension and pressure sensor fixing pieces 8 with the same structure;
the experimental platform 18 is a rectangular plate-shaped nonstandard part with certain flatness requirements, 8 threaded holes which are symmetrical front and back, left and right and used for mounting the servo electric cylinder are arranged in the center part, and 4 threaded holes used for mounting the contact type infrared sensor support frame 7 by using screws are uniformly and symmetrically arranged at the two longitudinal ends of the experimental platform 18.
The experimental part comprises an experimental servo electric cylinder 6A and a load servo electric cylinder 6B which are tested electric cylinders; the experimental servo electric cylinder 6A and the load servo electric cylinder 6B both adopt servo electric cylinders with the model number FT35, the side surfaces of the servo electric cylinders with the model number FT35 are provided with fixed bases, and other models of electric cylinders which can be arranged on the experimental device for the reliability of the servo electric cylinders based on the load spectrum can also be adopted;
the contact type infrared sensor support frame 7 is a door-shaped non-standard part, screw through holes for mounting fixing screws are symmetrically formed in the ends of 2 fixing bases, and a blind hole with threads is upwards formed in the bottom surface in the middle of the top end beam and used for mounting the contact type infrared sensor 13.
The tension and pressure sensor fixing piece 8 is a square plate type non-standard piece, the middle of one side of the tension and pressure sensor fixing piece is provided with 1 threaded blind hole with the same diameter as that of the push rod end of the experimental servo electric cylinder 6A or the load servo electric cylinder 6B for connecting with the experimental servo electric cylinder 6A or the load servo electric cylinder 6B, and the other side of the tension and pressure sensor fixing piece 8 is connected with a tension and pressure sensor 14;
the experimental platform 18 is arranged on a smooth and flat ground. Experiment servo electric jar 6A and load servo electric jar 6B adopt the screw and install at the both ends of experiment platform 18 through experiment servo electric jar 6A and load servo electric jar 6B's unable adjustment base, experiment servo electric jar 6A and load servo electric jar 6B are installed relatively, experiment servo electric jar 6A and the rotation axis collineation of load servo electric jar 6B push rod and parallel with experiment platform 18's vertical line of symmetry to realize the forward loading of power. The fixed ends of the 2 contact type infrared sensor support frames 7 are fixed on the experiment platform 18 through fixing screws, top end cross beams of the 2 contact type infrared sensor support frames 7 are respectively positioned in the middle positions of the cylinder bodies of the experiment servo electric cylinder 6A and the load servo electric cylinder 6B, and the top end cross beams of the 2 contact type infrared sensor support frames 7 are vertically crossed with longitudinal symmetry lines of the experiment platform 18, so that the accuracy of temperature measurement is guaranteed; the 2 pulling pressure sensor fixing pieces 8 are respectively installed on the extending ends of the push rod of the experimental servo electric cylinder 6A and the push rod of the load servo electric cylinder 6B through threaded connection, so that installation of the pulling pressure sensor 14 between the two push rods is guaranteed.
In summary, when the experimental servo electric cylinder 6A and the load servo electric cylinder 6B are switched on at different voltages, the push rods of the experimental servo electric cylinder 6A and the load servo electric cylinder 6B are endowed with different extension speeds, and the experimental servo electric cylinder 6A and the load servo electric cylinder 6B are oppositely installed, so that the axial load of the push rods of the electric cylinders is loaded.
The auxiliary structure comprises a pulley support frame 9, a pulley 10, a steel wire 11 and an object stage 12;
the pulley support frame 9 is a door-shaped non-standard part and comprises 2 support columns and 1 cross beam; the both sides of the fixed bottom of 2 support columns are provided with the bolt hole that is used for installing set screw, and columniform top crossbeam is used for supporting pulley 10.
The pulley 10 is a pulley with the model WJ1401, and the pulley 10 is sleeved on a beam at the top end of the pulley support frame 9 and can slide on the pulley support frame 9 at will for changing the action direction of force.
The steel wire 11 adopts a steel wire with the model number of 6x37 and is used for transmitting load.
The object stage 12 is a plate-like structure member in a rectangular parallelepiped shape, and is mainly used for bearing a heavy object.
For the reason of contrast test, only an auxiliary structure is adopted to load a radial load on the servo electric cylinder at the No. 5 experiment station E in the test, on the No. 5 experiment station E, the fixed bottom end of the pulley support frame 9 is fixed at the right end edge of an experiment platform 18 in the No. 5 experiment station E through a fixing screw, a pulley 10 is sleeved on a top end beam of the pulley support frame 9, namely the pulley 10 is sleeved on the top end beam of the pulley support frame 9, but the pulley 10 is not in interference fit with the top end beam of the pulley support frame 9, and the pulley 10 can move back and forth on the top end beam of the pulley support frame 9; one end of each of 2 steel wires is welded on 2 pressure sensor fixing pieces 8 with the same structure, the other end of each of the 2 steel wires is welded on an objective table 12, and the 2 steel wires are wound from the outer side and are in contact connection with the surface of the pulley 10; after the experimental servo electric cylinder 6A and the load servo electric cylinder 6B are powered on, the steel wire 11 drives the pulley to do reciprocating motion on the pulley support frame, and the loading of radial load on the experimental servo electric cylinder 6A and the load servo electric cylinder 6B can be realized by adding a heavy object on the objective table 12.
The temperature and humidity experiment box 5 adopts an experiment box with the model number of CLM-GD (J) W-800, is a standard experiment device with certain tightness, and can be used for changing the humidity and the temperature of the internal air;
for the reason of comparison test, the temperature and humidity experiment box 5 is only arranged on the experiment station A No. 1 in the test, and the working conditions of the experiment servo electric cylinder 6A and the load servo electric cylinder 6B of the experiment station A No. 1 are changed and controlled; the No. 1 experiment station A is integrally arranged in the temperature and humidity experiment box 5, and the working states in different environments are realized by adjusting the humidity in the temperature and humidity experiment box 5.
The data measurement processing platform comprises a data measurement part and a data processing part.
Referring to fig. 4, the data measuring part includes 10 touch infrared sensors 13 having the same structure, 5 pull pressure sensors 14 having the same structure, 10 speed sensors 15 having the same structure, 10 acceleration sensors 16 having the same structure, and 10 vibration sensors 17 having the same structure.
The contact type infrared sensor 13 is an infrared sensor with the model number of SE2470, is a cylindrical standard part with threads at one end and is used for measuring the temperature of the servo electric cylinder body; the method comprises the following steps that 10 contact type infrared sensors 13 with the same structure are fixedly connected to 10 infrared sensor support frames 7 with the same structure through threads, measuring ends are in contact with the middle positions of 5 experimental servo electric cylinders 6A with the same structure and 5 load servo electric cylinders 6B with the same structure, and the temperatures of the 5 experimental servo electric cylinders 6A with the same structure and the 5 load servo electric cylinders 6B with the same structure are measured in real time after a power supply is switched on;
the pulling pressure sensor 14 is a pulling pressure sensor with the model number of SO8P5 and is used for measuring the axial load borne by each experimental servo electric cylinder; 5 tension pressure sensors 14 with the same structure are bonded between the 10 pressure sensor fixing plates 8 with the same structure, and the axial load on each servo electric cylinder can be measured in real time after the power supply is switched on;
the speed sensor 15 adopts a speed sensor with the model of SCA1000-D01 and is used for measuring the extension speed of a push rod of each experimental servo electric cylinder; the 10 speed sensors 15 with the same structure are adhered to an experiment platform 18 in an experiment station between 5 experiment servo electric cylinders 6A with the same structure and 5 load servo electric cylinders 6B with the same structure in a back-to-back mode and are positioned in front of a push rod, and the push rod extending speeds of the 5 experiment servo electric cylinders 6A with the same structure and the 5 load servo electric cylinders 6B with the same structure can be measured in real time after the power supply is switched on;
the acceleration sensor 16 adopts an acceleration sensor with the model number of 352A73, is used for measuring the extension acceleration of a push rod of each experimental servo electric cylinder, and is provided with a viscous coating at the bottom end so as to be convenient to install; the 10 acceleration sensors 16 with the same structure are respectively adhered to an experiment platform 18 in an experiment station between 5 experiment servo electric cylinders 6A with the same structure and 5 load servo electric cylinders 6B with the same structure in a back-to-back manner, are positioned in front of the push rod and in front of the speed sensor 15, and can measure the extension acceleration of the push rod of the 5 experiment servo electric cylinders 6A with the same structure and the 5 load servo electric cylinders 6B with the same structure in real time after the power is switched on;
the vibration sensor 17 adopts a vibration sensor with the model number of LTZ-50KA and is used for measuring the vibration amplitude of each experimental servo electric cylinder, and the bottom end of the vibration sensor is provided with a viscous coating so as to be convenient to install; the 10 vibration sensors 17 with the same structure are respectively adhered to the front and the bottom of the 5 experimental servo electric cylinders 6A with the same structure, and the 5 experimental servo electric cylinders 6A with the same structure are subjected to vibration measurement in real time.
Referring to FIG. 2, the data processing portion includes a computer desk 1, a computer monitor 2, a computer host 3 and 6 data acquisition cards 4 with the same structure
The data acquisition cards 4 adopt 8-channel data acquisition cards with the model of SG-AD-Modbus-8V to perform digital-to-analog conversion on signals acquired by each sensor, each data acquisition card is provided with 8 interfaces, 6 data acquisition cards 4 with the same structure are shared, and the 6 data acquisition cards 4 with the same structure are stacked.
The computer display 2, the computer host 3 and 6 data acquisition cards 4 with the same structure are sequentially arranged on the computer desk 1;
in the experiment station A No. 1, the output interfaces of 2 contact infrared sensors 13 with the same structure are connected with a CH1 interface and a CH2 interface of a first data acquisition card 4, the output interfaces of 2 acceleration sensors 16 with the same structure are connected with a CH3 interface and a CH4 interface of the first data acquisition card 4, the output interfaces of 2 vibration sensors 17 with the same structure are connected with a CH5 interface and a CH6 interface of the first data acquisition card 4, and the output interfaces of 2 speed sensors 15 with the same structure are connected with a CH7 interface and a CH8 interface of the first data acquisition card 4; the same principle is that:
2 contact infrared sensors 13 with the same structure, 2 acceleration sensors 16 with the same structure, 2 vibration sensors 17 with the same structure and 2 speed sensors 15 with the same structure in the No. 2 experiment station B are connected with a second data acquisition card 4 in the same connection mode in the No. 1 experiment station A;
2 contact infrared sensors 13 with the same structure, 2 acceleration sensors 16 with the same structure, 2 vibration sensors 17 with the same structure and 2 speed sensors 15 with the same structure in the No. 3 experiment station C are connected with a third data acquisition card 4 in the same connection mode in the No. 1 experiment station A;
2 contact infrared sensors 13 with the same structure, 2 acceleration sensors 16 with the same structure, 2 vibration sensors 17 with the same structure and 2 speed sensors 15 with the same structure in the No. 4 experiment station D are connected with a fourth data acquisition card 4 in the same connection mode in the No. 1 experiment station A;
2 contact infrared sensors 13 with the same structure, 2 acceleration sensors 16 with the same structure, 2 vibration sensors 17 with the same structure and 2 speed sensors 15 with the same structure in the No. 5 experiment station E are connected with a fifth data acquisition card 4 in the same connection mode in the No. 1 experiment station A;
the 5 pulling pressure sensors 14 with the same structure in the experiment station A No. 1, the experiment station B No. 2, the experiment station C No. 3, the experiment station D No. 4 and the experiment station E No. 5 are sequentially connected to a CH1 interface, a CH2 interface, a CH3 interface, a CH4 interface and a CH5 interface in the sixth data acquisition card 4.
The output interfaces of the 6 data acquisition cards 4 with the same structure are sequentially connected with the USB interface of the computer host 3, and the captured information is subjected to operation analysis and processing. And then the information such as the humidity of the temperature and humidity experiment box 5 and the weight of the load loaded on the objective table 12 is input through a keyboard, so that the influence of the humidity and the weight on the service life of the servo electric cylinder can be comprehensively obtained. Meanwhile, multiple tests can be carried out, and multiple groups of data can be acquired and subjected to statistical analysis. In conclusion, the measurement and analysis of the factors influencing the service life of the servo motor can be realized.
Referring to fig. 1 and 5: test method adopting load spectrum-based servo electric cylinder reliability experiment device
The contrast test of exploring the influence of the extending speed on the service life of the experimental servo electric cylinder 6A is carried out on a No. 2 experimental station B, a No. 3 experimental station C and a No. 4 experimental station D:
1. setting test conditions
1) The load servo electric cylinder 6B in the No. 2 experiment station B, the No. 3 experiment station C and the No. 4 experiment station D all extend out at the speed of 6 m/s;
2) setting the humidity of a working environment to be 25%;
3) setting the temperature of a working environment to be 20 ℃, and not bearing radial loads;
4) the experiment servo electric cylinder 6A of No. 2 experiment station B extends out at the speed of 20m/s, the experiment servo electric cylinder 6A of No. 3 experiment station C extends out at the speed of 19m/s, and the experiment servo electric cylinder 6A of No. 4 experiment station D extends out at the speed of 18 m/s;
2. start testing and record test data
1) After the power supply is switched on, 6 contact infrared sensors 13 record the temperature of each cylinder body in real time, 6 speed sensors 15 and 6 acceleration sensors 16 record the actual extension speed and acceleration of each electric cylinder in real time, 3 tension and pressure sensors 14 record the load size in real time, and 6 vibration sensors 17 record the vibration frequency of 3 experimental servo electric cylinders 6A with the same structure in real time;
2) taking one expansion and one contraction as a working process, and after 500 working processes, simultaneously acquiring 500 groups of data captured by each sensor, thereby taking the data as a group of tests;
3. changing the test conditions, and repeating the above steps
1) Setting different speed gradients, and sequentially decreasing the extending speed of the experiment servo electric cylinder of each experiment station by 3m/s from high to low, and decreasing the extending speed of the experiment servo electric cylinder of each experiment station to 6m/s to stop the test;
2) carrying out a plurality of groups of tests, and finally carrying out statistical analysis;
(1) the information captured by the sensor is collected into a computer through each data acquisition card 4, an image of the stretching speed of the experimental servo electric cylinder 6A relative to the temperature and the vibration frequency is drawn, and an equation of the curve is obtained;
(2) and the extension speed of the experimental servo electric cylinder 6A is derived and then substituted into the test data, thereby obtaining the slope of the point at different extension speeds of the experimental servo electric cylinder 6A, representing the change speed of the curve at the extension speed, the greater the influence on the working life of the experimental servo electric cylinder 6A,
(3) the information captured by the sensor is collected into a computer through each data acquisition card 4, and an image of the stretching speed of the experimental servo electric cylinder 6A about the load is drawn to obtain the corresponding load size of the experimental servo electric cylinder 6A at different stretching speeds;
(4) comparing the two images to obtain an influence curve on the working life of the experimental servo electric cylinder 6A under different load conditions; therefore, the influence of the extension speed of the push rod of the experimental servo electric cylinder 6A on the working life of the experimental servo electric cylinder 6A can be explored from the angle of the load spectrum;
secondly, a comparative test for researching the influence of the radial load on the service life of the experimental servo electric cylinder 6A is carried out on the No. 2 experimental station B and the No. 5 experimental station E:
1. setting test conditions
1) The experiment servo electric cylinders 6A of the No. 2 experiment station B and the No. 5 experiment station E extend out at the speed of 20 m/s;
2) the load servo electric cylinders 6B of the No. 2 experiment station B and the No. 5 experiment station E extend out at the speed of 6 m/s;
3) setting the humidity of a working environment to be 25%;
4) setting the temperature of a working environment to be 20 ℃;
5) radial loads are applied to the experiment servo electric cylinder 6A and the load servo electric cylinder 6B on the No. 5 experiment station E, and 20N radial loads are applied to the experiment servo electric cylinder 6A and the load servo electric cylinder 6B by placing a 2kg weight on the objective table 12;
2. start testing and record test data
1) After the power supply is switched on, the temperature of the cylinder bodies of the experimental servo electric cylinder 6A and the load servo electric cylinder 6B is recorded in real time by 4 contact infrared sensors 13 with the same structure, the actual extension speed and acceleration of the push rod of the 2 experimental servo electric cylinders 6A with the same structure and the actual extension speed and acceleration of the push rod of the 2 load servo electric cylinders 6B with the same structure are recorded in real time by 4 speed sensors 15 with the same structure and 4 acceleration sensors 16 with the same structure, the load size is recorded in real time by 2 tension pressure sensors 14 with the same structure, and the vibration frequency of the 2 experimental servo electric cylinders 6A with the same structure is recorded in real time by 4 vibration sensors 17 with the same structure;
2) taking one expansion and one contraction as a working process, after 500 working processes, simultaneously acquiring 500 groups of data captured by each sensor, and recording the weight of each weight application to obtain a group of tests;
3. changing the test conditions, and repeating the above steps
1) Applying different weights to the objective table 12 in each test, and gradually increasing by 5N until 500N is reached;
2) performing multiple tests, and performing statistical analysis
(1) The information captured by the sensor is collected into a computer through each data acquisition card 4, an image of the radial loading load of the experimental servo electric cylinder 6A about the temperature and the vibration frequency is drawn, and an equation of the curve is obtained;
(2) the radial load of the experimental servo electric cylinder 6A is derived as an independent variable in combination with the equation of the curve, and then substituted into the experimental data. The slope of the point at which the experimental servo electric cylinder 6A is subjected to different radial loads is thus obtained, representing the rate of change of the curve under such radial loads. The larger the speed is, the larger the influence on the working life of the experimental servo electric cylinder 6A is;
(3) information captured by the sensor is collected into a computer through each data acquisition card 4, and the image of the stretching speed of the experimental servo electric cylinder 6A relative to the load is obtained to obtain the corresponding load size of the experimental servo electric cylinder 6A at different stretching speeds;
(4) comparing the two images to obtain an influence curve of the same load on the working life of the experimental servo electric cylinder 6A under the condition of different radial loads; therefore, the influence of the extension speed of the push rod of the experimental servo electric cylinder 6A on the working life of the experimental servo electric cylinder 6A can be explored from the angle of the load spectrum;
thirdly, a comparison test for researching the influence of air humidity on the service life of the servo electric cylinder is carried out on the No. 1 experiment station A and the No. 2 experiment station B:
1. setting test conditions
1) The experimental servo electric cylinders 6A of the No. 1 experimental station A and the No. 2 experimental station B extend out at the speed of 20 m/s;
2) the load servo electric cylinder 6B of the No. 1 experiment station A and the No. 2 experiment station B extends out at the speed of 6 m/s;
3) the indoor environment temperature is 20 ℃, and the indoor environment temperature is not subjected to radial load;
4) opening a temperature and humidity experiment box 5 on the No. 1 experiment station A, and increasing the air humidity of the No. 1 experiment station A to 30%;
2. start testing and record test data
1) After the power supply is switched on, 4 contact infrared sensors 13 with the same structure record the temperature of the cylinder bodies of an experimental servo electric cylinder 6A and a load servo electric cylinder 6B in real time, 4 speed sensors 15 with the same structure and 4 acceleration sensors 16 with the same structure record the actual extension speed and acceleration of push rods of 2 experimental servo electric cylinders 6A with the same structure and 2 load servo electric cylinders 6B with the same structure in real time, 2 tension and pressure sensors 14 with the same structure record the size of a load in real time, and 4 vibration sensors 17 with the same structure record the vibration frequency of 2 experimental servo electric cylinders 6A with the same structure in real time;
2) taking one expansion and one contraction as a working process, after 500 working processes are carried out, simultaneously acquiring 500 groups of data captured by each sensor, and recording the air humidity of the No. 1 experiment station A and the No. 2 experiment station B each time, so as to take the data as a group of tests;
3. changing the test conditions, and repeating the above steps
1) Then, continuously increasing the air humidity in the temperature and humidity experiment box 5, and gradually increasing the air humidity by 5% until 80%;
2) performing multiple tests, and performing statistical analysis
(1) The information captured by the sensor is collected into a computer through a data acquisition card 4, an image of the air humidity related to the temperature and the vibration frequency is drawn, and an equation of the curve is obtained;
(2) according to the equation obtained, the air humidity is taken as an independent variable and derived, and then the experimental data are substituted. So as to obtain the slope of the point under different air humidity, which represents the change speed of the curve under the air humidity, and the larger the speed is, the larger the influence on the working life of the experimental servo electric cylinder 6A is;
(3) information captured by the sensor is collected into a computer through a data acquisition card 4, an image of the stretching speed of the experimental servo electric cylinder 6A about the load is obtained, and meanwhile the corresponding load size of the experimental servo electric cylinder 6A under different air humidity is obtained;
(4) comparing the two image curves to obtain an influence curve on the working life of the experimental servo electric cylinder 6A under the conditions of the same load and different air humidity; therefore, the influence of the extension speed of the push rod of the experimental servo electric cylinder 6A on the working life of the experimental servo electric cylinder 6A can be explored from the angle of the load spectrum;
in the concrete implementation engineering, the devices in the embodiments can be selected and modified as required, or the utility model discloses still other embodiments.
1. The servo electric cylinder reliability experiment device based on the load spectrum can realize dynamic loading on the load, can change the extension speed of a push rod of the load servo electric cylinder in an experiment period, simulate the actual working condition and realize dynamic loading;
2. the servo electric cylinder reliability experiment device based on the load spectrum can enable a load not to be connected with a power supply and carry out a fatigue test only aiming at the experimental servo electric cylinder;
3. the servo electric cylinder reliability experiment device based on the load spectrum is not only suitable for the servo electric cylinder, but also suitable for electric cylinders of other models;
4. the servo electric cylinder reliability experiment device based on the load spectrum not only can be provided with 5 experiment stations, but also can be provided with more groups for experiment or comparison.
But none of these changes alter the overall effect
In addition, the embodiment described in the present invention is to facilitate the technical personnel in the technical field to understand and apply the present invention, and is an optimized embodiment or a better specific technical solution, which is not only suitable for a certain type of servo electric cylinder, but also can adopt a basically unchangeable technical solution for the reliability experiment of the servo electric cylinder outside the specification range; however, the size of the technical equipment used will change accordingly, so the present invention is not limited to the description of the more specific technical solution in the embodiment;
in conclusion, if the related technical personnel insist on the basic technical scheme of the utility model make the equivalent structure change or various modifications that do not need to pass through creative work, the utility model discloses protection.
Claims (6)
1. A servo electric cylinder reliability experiment device based on a load spectrum is characterized by comprising a servo electric cylinder reliability experiment table and a data measurement processing platform;
the servo electric cylinder reliability experiment table comprises an experiment station (A) No. 1, an experiment station (B) No. 2, an experiment station (C) No. 3, an experiment station (D) No. 4, an experiment station (E) No. 5, an auxiliary structure and a temperature and humidity experiment box (5); wherein: the structure composition of the No. 1 experiment station (A), the No. 2 experiment station (B), the No. 3 experiment station (C), the No. 4 experiment station (D) and the No. 5 experiment station (E) is the same;
the data measurement processing platform comprises a data measurement part and a data processing part;
the temperature and humidity experiment box (5) is buckled on the experiment station (1), and the auxiliary structure is arranged at the right end of the experiment station (5); the data processing part is arranged on a foundation on the left side of the servo electric cylinder reliability experiment table; the data measurement part is installed on experiment station (A) No. 1, experiment station (B) No. 2, experiment station (C) No. 3, experiment station (D) No. 4 and experiment station (E) No. 5, adopts the line connection between data measurement part and the data processing part.
2. The servo electric cylinder reliability experiment device based on the load spectrum according to claim 1, wherein the data measurement part is installed on the experiment station No. 1 (A), the experiment station No. 2 (B), the experiment station No. 3 (C), the experiment station No. 4 (D) and the experiment station No. 5 (E) and is characterized in that:
the data measuring part comprises 10 contact infrared sensors (13) with the same structure, 5 pull pressure sensors (14) with the same structure, 10 speed sensors (15) with the same structure, 10 acceleration sensors (16) with the same structure and 10 vibration sensors (17) with the same structure;
the contact type infrared sensor (13) adopts an infrared sensor with the model number of SE2470, one end of the contact type infrared sensor is provided with a threaded cylindrical standard part, 10 contact type infrared sensors (13) with the same structure are fixedly connected in threaded blind holes on top end beams of 10 infrared sensor support frames (7) with the same structure in No. 1 experiment station (A) to No. 5 experiment station (E) through threads, and measuring ends of 10 contact type infrared sensors (13) with the same structure are in contact with the middle positions of cylinder bodies of 5 experiment servo electric cylinders (6A) with the same structure and load servo electric cylinders (6B) with the same structure;
the pull pressure sensor (14) adopts a pull pressure sensor with the model number of SO8P5, and 5 pull pressure sensors (14) with the same structure are bonded between 10 pressure sensor fixing plates (8) with the same structure in the No. 1 experiment station (A) to the No. 5 experiment station (E);
the speed sensors (15) are SCA1000-D01 speed sensors, 10 speed sensors (15) with the same structure are adhered back to back on an experiment platform (18) in an experiment station between 5 experiment servo electric cylinders (6A) with the same structure and 5 load servo electric cylinders (6B) with the same structure and are positioned in front of push rods of the servo electric cylinders;
the acceleration sensor (16) adopts an acceleration sensor with the model number of 352A73, 10 acceleration sensors (16) with the same structure are respectively adhered to an experiment platform (18) in an experiment station between 5 experiment servo electric cylinders (6A) with the same structure and 5 load servo electric cylinders (6B) with the same structure in a back-to-back manner and are positioned in front of push rods of the servo electric cylinders, and are positioned in front of the speed sensor (15);
the vibration sensor (17) adopts a vibration sensor with the model number of LTZ-50KA, and 10 vibration sensors (17) with the same structure are respectively stuck to the front and the bottom of a cylinder body of 5 experimental servo electric cylinders (6A) with the same structure.
3. The servo electric cylinder reliability experiment device based on load spectrum according to claim 1, characterized in that the data measurement part and the data processing part are connected by a wire, which means that:
the data measuring part comprises 10 contact infrared sensors (13) with the same structure, 5 pull pressure sensors (14) with the same structure, 10 speed sensors (15) with the same structure, 10 acceleration sensors (16) with the same structure and 10 vibration sensors (17) with the same structure;
the output interfaces of 2 contact infrared sensors (13) with the same structure in the No. 1 experiment station (A) are connected with a CH1 interface and a CH2 interface of a first data acquisition card (4) in a data processing part, the output interfaces of 2 acceleration sensors (16) with the same structure are connected with a CH3 interface and a CH4 interface of the first data acquisition card (4), the output interfaces of 2 vibration sensors (17) with the same structure are connected with a CH5 interface and a CH6 interface of the first data acquisition card (4), and the output interfaces of 2 speed sensors (15) with the same structure are connected with a CH7 interface and a CH8 interface of the first data acquisition card (4);
the same principle is that:
2 contact infrared sensors (13) with the same structure, 2 vibration sensors (17) with the same structure, 2 speed sensors (15) with the same structure and 2 acceleration sensors (16) with the same structure in the No. 2 experiment station (B) are connected with a second data acquisition card (4) in the same connection mode in the No. 1 experiment station (A);
2 contact infrared sensors (13) with the same structure, 2 vibration sensors (17) with the same structure, 2 speed sensors (15) with the same structure and 2 acceleration sensors (16) with the same structure in the No. 3 experiment station (C) are connected with a third data acquisition card (4) in the same connection mode in the No. 1 experiment station (A);
2 contact infrared sensors (13) with the same structure, 2 vibration sensors (17) with the same structure, 2 speed sensors (15) with the same structure and 2 acceleration sensors (16) with the same structure in the No. 4 experiment station (D) are connected with a fourth data acquisition card (4) in the same connection mode in the No. 1 experiment station (A);
2 contact infrared sensors (13) with the same structure, 2 vibration sensors (17) with the same structure, 2 speed sensors (15) with the same structure and 2 acceleration sensors (16) with the same structure in the No. 5 experiment station (E) are connected with a fifth data acquisition card (4) in the same connection mode in the No. 1 experiment station (A);
no. 1 experiment station (A), No. 2 experiment station (B), No. 3 experiment station (C), No. 4 experiment station (D) and 5 in experiment station (E) 5 pull pressure sensor (14) that the structure is the same connect to CH1 interface, CH2 interface, CH3 interface, CH4 interface and CH5 interface in the sixth data acquisition card (4) in proper order.
4. The servo electric cylinder reliability experiment device based on the load spectrum according to the claim 1, characterized in that the No. 1 experiment station (A) comprises an experiment platform (18), an experiment part, 2 contact type infrared sensor support frames (7) with the same structure and 2 pull pressure sensor fixing plates (8) with the same structure; the experimental part comprises an experimental servo electric cylinder (6A) and a load servo electric cylinder (6B), and is a tested electric cylinder;
the experimental servo electric cylinder (6A) and the load servo electric cylinder (6B) are installed at the two longitudinal ends of the experimental platform (18) through bolts and fixing bases on the experimental servo electric cylinder (6A) and the load servo electric cylinder (6B), the experimental servo electric cylinder (6A) and the load servo electric cylinder (6B) are installed oppositely, and the rotation axes of the push rods of the experimental servo electric cylinder (6A) and the load servo electric cylinder (6B) are collinear and parallel to the longitudinal symmetry line of the experimental platform (18); the fixed ends of the 2 contact type infrared sensor support frames (7) are fixed on an experiment platform (18) by screws, top end beams of the 2 contact type infrared sensor support frames (7) are respectively positioned in the middle positions of an experiment servo electric cylinder (6A) and a load servo electric cylinder (6B), and the top end beams of the 2 contact type infrared sensor support frames (7) are vertically crossed with longitudinal symmetry lines of the experiment platform (18); the 2 pulling pressure sensor fixing pieces (8) are installed on the extending ends of the push rods of the experimental servo electric cylinder (6A) and the load servo electric cylinder (6B) through threaded connection.
5. The servo electric cylinder reliability experiment device based on the load spectrum according to the claim 1, characterized in that the auxiliary structure comprises a pulley support frame (9), a pulley (10), a steel wire (11) and an object stage (12);
the pulley support frame (9) is a door-shaped non-standard part, bolt holes for mounting screws are formed in two sides of the fixed bottom end, and a cylindrical top end beam is used for supporting the pulley (10);
the pulley support frame (9) is fixed at the edge of the right end of an experiment platform (18) in a No. 5 experiment station (E) through fixing the bottom end and adopting screws, a pulley (10) is sleeved on a top end beam in the pulley support frame (9), and the pulley (10) is in sliding connection with the top end beam of the pulley support frame (9); one end welding of 2 steel wires is on 2 pressure sensor stationary blades (8) that the structure is the same in No. 5 experiment station (E), and the other end welding of 2 steel wires is on objective table (12), and 2 steel wires are walked around and are connected with pulley (10) surface contact.
6. The load spectrum-based servo electric cylinder reliability experimental device according to claim 1, wherein the data processing part comprises a computer desk (1), a computer display (2), a computer host (3), a keyboard and 6 data acquisition cards (4) with the same structure;
the data acquisition cards (4) adopt 8-channel data acquisition cards with the model of SG-AD-Modbus-8V, each data acquisition card is provided with 8 interfaces, and 6 data acquisition cards (4) with the same structure are stacked;
the computer display (2), the computer host (3), the keyboard and 6 data acquisition cards (4) with the same structure are sequentially placed on the computer desk (1); the computer display (2) and the keyboard are connected with the output interfaces of 6 data acquisition cards (4) with the same structure and the USB interface of the computer host (3).
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| CN110940509A (en) * | 2019-12-29 | 2020-03-31 | 吉林大学 | Servo electric cylinder reliability experiment device and test method based on load spectrum |
| CN110940509B (en) * | 2019-12-29 | 2024-05-14 | 吉林大学 | Servo electric cylinder reliability experiment device and test method based on load spectrum |
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