CN111413219A - Pendulum impact experiment machine and experiment system - Google Patents
Pendulum impact experiment machine and experiment system Download PDFInfo
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- CN111413219A CN111413219A CN202010438763.XA CN202010438763A CN111413219A CN 111413219 A CN111413219 A CN 111413219A CN 202010438763 A CN202010438763 A CN 202010438763A CN 111413219 A CN111413219 A CN 111413219A
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- 238000002474 experimental method Methods 0.000 title claims description 32
- 238000012360 testing method Methods 0.000 claims abstract description 54
- 238000009863 impact test Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0039—Hammer or pendulum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0252—Monoaxial, i.e. the forces being applied along a single axis of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0688—Time or frequency
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
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Abstract
The invention provides a pendulum impact tester and a test system, comprising: the impact testing machine is used for carrying out impact test on the sample through the pendulum bob; the automatic feeding device comprises a high-low temperature test furnace, an automatic sample ejection device, an automatic sample support and an automatic sample outlet; the data acquisition unit is used for acquiring impact parameters of the impact testing machine during pendulum impact; the control system comprises an impact control system, a temperature control system and a feeding control system, wherein the impact control system is used for controlling impact parameters of the impact testing machine, the temperature control system is used for controlling temperature parameters of the high-low temperature testing furnace, and the feeding control system is used for controlling the automatic feeding device to execute a feeding process. The experimental system of the pendulum impact experimental machine further comprises a data information management unit which is used for processing, displaying and storing the impact parameters collected by the data collection unit.
Description
Technical Field
The invention relates to the field of pendulum impact experimental equipment, in particular to a pendulum impact experimental machine and an experimental system with full-automatic control, data acquisition and digital information management functions.
Background
The impact testing machine is special equipment for testing the impact toughness of materials, and is widely applied to the fields of metallurgy, machinery, aviation, nuclear power, shipbuilding and the like.
The traditional pendulum bob testing machine manually stirs a pendulum bob to a designated position and records data, so that the impact toughness of a material is tested, the process is complex and human errors are easily caused; in addition, in the aspect of feeding, the sample to be measured after high-temperature and low-temperature treatment is manually clamped to the sample support, so that the temperature change of the sample to be measured can be caused, and a system error is generated.
Disclosure of Invention
The invention aims to provide a pendulum impact testing machine and a pendulum impact testing system, and aims to solve the problems that an existing impact testing machine is complex in use process, prone to cause human errors and prone to generate system errors.
To achieve the above object, the present invention provides a pendulum impact tester, comprising:
the impact testing machine is used for carrying out an impact test on the sample through the pendulum bob;
the automatic feeding device comprises a high-low temperature test furnace, an automatic sample ejection device, an automatic sample support and an automatic sample outlet, wherein the high-low temperature test furnace is used for adjusting the temperature of a sample, the automatic sample ejection device is used for automatically ejecting the sample meeting the temperature requirement, the automatic sample support is used for automatically ejecting the sample to a position to be tested for impact, and the automatic sample outlet is used for automatically sending out the sample;
the data acquisition unit is used for acquiring impact parameters of the impact testing machine during impact testing;
the control system comprises an impact control system, a temperature control system and a feeding control system, wherein the impact control system is used for controlling impact parameters of the impact testing machine, the temperature control system is used for controlling temperature parameters of the high-low temperature testing furnace, and the feeding control system is used for controlling the automatic feeding device to execute a feeding process.
Preferably, the impact testing machine comprises a pendulum impact device, an impact control device and a laboratory bench device, wherein the pendulum impact device comprises a pendulum and a swing arm connected with the pendulum, the impact control device comprises an encoder, a rotating shaft, a P L C controller and a servo motor, the laboratory bench device comprises a protective cover, a support, a base and a visual glass protection plate, the other end of the pendulum is rotatably connected with the upper end of a supporting rod through the rotating shaft, the lower end of the supporting rod is fixed on the base, the support is arranged on the outer side of the base and used for stabilizing the base, the protective cover is arranged on the base to cover the lower part of an impact track of the pendulum impact device, the visual glass protection plate is arranged at the hollow middle part of the protective cover, the servo motor is used for driving the rotating shaft under the control of the P L C controller, and the encoder is used for monitoring the rotating angle and the rotating speed of the servo motor.
Preferably, the protective cover is detachably connected with the base, the swing arm is rotatably connected with the rotating shaft through a bearing, and the swing arm is fixedly connected with the pendulum bob through a bolt.
Preferably, the automatic feeding device is arranged at a position below an impact track of the pendulum impact device on the base.
Preferably, the data acquisition unit includes impact force sensor, displacement sensor, angle displacement sensor and temperature sensor, impact force sensor is used for gathering the impact force of impact tester during operation to the sample, displacement sensor is used for gathering the sample displacement of impact tester during operation, angle displacement sensor is used for gathering pendulum angle when impact tester carries out pendulum impact, temperature sensor is used for gathering the sample temperature of impact tester during operation.
Preferably, the temperature of the high-low temperature test furnace is adjusted by an MR13 temperature controller, and the temperature sensor collects the temperature of the sample, converts the temperature into analog and transmits the analog and digital signals to the MR13 temperature controller to perform closed-loop control on the temperature of the sample.
Preferably, the data acquisition unit further comprises a load sensor for recording load changes during impact to calculate energy changes.
The invention also provides a pendulum impact experiment system, which comprises the pendulum impact experiment machine, and further comprises:
and the data information management unit is used for processing, displaying and storing the impact parameters acquired by the data acquisition unit, wherein the impact parameters acquired by the data acquisition unit are uploaded to the data information management unit through the control system.
Preferably, the system further comprises an ADAM4520 converter, which is used for uploading data acquired by the data acquisition unit to a data information management unit of an upper computer after performing analog-to-digital conversion on the data.
Preferably, the datamation information management unit is further connected to a printing device, and the printing device is configured to print a test report after the datamation information management unit obtains and analyzes data.
The pendulum impact experiment machine and the experiment system provided by the invention have the advantages of high automation degree, high data acquisition precision, high control precision and strong stability.
The experiment machine and the experiment system automatically complete the temperature treatment, feeding and fixing of the sample to be tested by using the programmable logic controller and the temperature control device, and realize the control of the operations of swinging, hanging, impacting, braking, resetting and the like of the pendulum bob.
The experiment machine and the experiment system accurately acquire data such as temperature, pendulum hammer swing angle, impact force and the like by using the displacement sensor, the temperature sensor, the angular displacement sensor and the impact force sensor, dynamically display curves such as force-time, displacement-time, energy-time, force-displacement, energy-displacement and the like after data analysis and processing, improve visual performance of data, and provide a more accurate detection means for the field of mechanical material detection.
Drawings
FIG. 1 is a structural view of a pendulum impact tester of the present invention;
FIG. 2 is a data flow diagram of a pendulum impact experiment system of the present invention;
FIG. 3 is a flowchart of the software of the pendulum impact testing system of the present invention.
Description of reference numerals: the device comprises a pendulum bob 1, a swing arm 2, an encoder 3, a rotating shaft 4, a supporting rod 5, a protective cover 6, a support 7, a base 8, a high-low temperature automatic feeding test box 9 and a visual glass protection plate 10.
Detailed Description
While the embodiments of the present invention will be described and illustrated in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, equivalents, and alternatives falling within the scope of the invention as defined by the appended claims.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking specific embodiments as examples with reference to the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The embodiment provides a pendulum impact experiment machine, including:
the impact testing machine is used for carrying out impact test on the sample through the pendulum bob;
the automatic feeding device comprises a high-low temperature test furnace, an automatic sample ejection device, an automatic sample support and an automatic sample outlet, wherein the high-low temperature test furnace is used for adjusting the temperature of a sample, the automatic sample ejection device is used for automatically ejecting the sample meeting the temperature requirement, the automatic sample support is used for automatically ejecting the sample meeting the test temperature condition to a position to be tested for impact, and the automatic sample outlet is used for automatically sending out the sample;
the data acquisition unit is used for acquiring impact parameters of the impact testing machine during impact testing;
the control system comprises an impact control system, a temperature control system and a feeding control system, wherein the impact control system is used for controlling impact parameters of the impact testing machine, the temperature control system is used for controlling temperature parameters of the high-low temperature testing furnace, and the feeding control system is used for controlling the automatic feeding device to execute a feeding process.
Wherein, impact tester divide into three major parts, specifically include: pendulum bob impact device, impact control device, laboratory bench device. Referring to fig. 1, the pendulum impact device comprises a pendulum 1 and a swing arm 2 connected with the pendulum, the impact control device comprises an encoder 3 and a rotating shaft 4, and the experiment table device comprises a protective cover 6, a support 7, a base 8 and a visual glass protection plate 10. Specifically, one end of the swing arm 2 is connected with the pendulum bob 1, the other end of the swing arm is connected with the upper end of the support rod 5, and the swing arm 2 is rotatably connected with the support rod 5 through the rotating shaft 4. The lower end of the supporting rod 5 is fixed on the base 8, and the support 7 is arranged on the outer side of the base 8 and used for stabilizing the base 8. The shield 6 is a semi-arc shaped housing that is disposed on the base 8 to cover the underside of the impact trajectory of the pendulum bob impact device. The visual glass protection plate 10 is arranged in the middle hollow-out position of the protection cover 6. Specifically, the protective cover 6 is detachably connected with the base 8, and the main body frame can be assembled and disassembled conveniently in a detachable matching mode. The base, the rack and the support are supporting structures of the whole testing machine, and stability and reliability of the testing machine are enhanced. Swing arm 1 and pivot 4 rotate through the bearing and connect, can improve the operation smoothness nature and the stability of pendulum. Swing arm 2 and pendulum 1 pass through bolt fixed connection, guarantee the reliability of operation process.
The autoloading device is disposed at a position of the base 8 below the impact trajectory of the pendulum bob impact device. The protective cover 6 can effectively protect experiment operators and prevent samples interrupted by experiments from flying out; the support 7 of the embodiment is designed into a large-area support to reduce pressure so as to make the whole test bed more stable; the base 8 is connected with the protective cover 6, the support 7 and the visual glass protection plate 10 to play a role of integral support; the visual glass protection plate 10 is made of firm and transparent glass materials, so that the visual glass protection plate has a protection effect and enables experiment operators to observe an experiment process in real time.
Further, the data acquisition unit includes impact force sensor, displacement sensor, angle displacement sensor and temperature sensor, and impact force sensor is used for gathering the impact force of impact tester during operation to the sample, and displacement sensor is used for gathering the sample displacement of impact tester during operation, and the signal of telecommunication that will gather transmits to the ADAM4017 analog input module of studying china through RS485, transmits to the industrial computer by MODBUS again. The angular displacement sensor is used for collecting a pendulum angle when the impact testing machine performs pendulum impact, and the collected electric signal is transmitted to the programmable controller through the terminal connection by the rotary encoder and then transmitted to the industrial personal computer by the MODBUS. Temperature sensor is used for gathering the sample temperature of impact tester during operation, and the signal of telecommunication that will gather is connected through the terminal and is transmitted to MR13 temperature control appearance and is transmitted to the industrial computer by MODBUS again.
The temperature of the high-low temperature test furnace is regulated by an MR13 temperature controller, and the temperature of the sample is collected by a temperature sensor, is subjected to analog-to-digital conversion and is transmitted to the MR13 temperature controller so as to carry out closed-loop control on the temperature of the sample.
When the automatic feeding device works, the working process is as follows: the automatic ejecting device of control switch sample opens the automatic export of sample, and later sample elevating gear up promotes the automatic sample support to the exit, opens the sample and presss from both sides, puts into the sample that awaits measuring, and the sample presss from both sides self-holding, and control switch withdraws automatic sample support, and when the automatic sample support that waits to accompany the sample withdraws, the automatic export of self-closing sample seals high low temperature test chamber. After the proof box is sealed, appointing the experiment temperature by MR13 temperature control appearance, when high low temperature test stove reaches the required temperature of experiment, the automatic exit of automatic control sample is opened and the elevating gear of automatic sample support, and automatic sample support sends out the sample and arrives the assigned position, waits for the pendulum hammer to strike.
In addition, the data acquisition unit also comprises a load sensor which is used for recording the load change in the impact process so as to calculate the energy change.
Referring to fig. 2, the impact control system of the control system includes a programmable controller (model number S7-1200) and a servo motor. The servo motor is used for driving the rotating shaft 4 under the control of the programmable controller so as to drive the pendulum bob to carry out impact test, and the encoder is used for monitoring the rotating angle and the rotating speed of the servo motor. When the pendulum bob works, when a sample support clamped with a sample reaches an experimental position, the industrial control touch screen sends an instruction to the programmable controller through a button on the touch screen, the programmable controller controls the servo motor to work according to the instruction to put down the pendulum bob, the pendulum bob reaches the highest position after the sample is hit, and the braking device is started when the pendulum bob returns to brake and reset the pendulum bob to a starting point. The pendulum bob impact device moves along with the impact control device to complete the whole process of impacting the sample.
The temperature control system in the control system mainly comprises an MR13 temperature controller which is connected with the high-low temperature test furnace. In order to meet the requirements of high-temperature and low-temperature impact experiments, the temperature control system can select a temperature control mode in software, parameters such as experiment temperature and the temperature control mode are automatically set through the software or manually set on a MR13 temperature controller panel, the requirement of appointed experiment temperature is met, a manual controller collects and displays data of the MR13 temperature control instrument in real time in the experiment process, and experimenters can be helped to master experiment temperature changes in real time.
When the temperature of the experimental sample meets the experimental requirements, the servo motor of the automatic sample outlet is controlled to work by Siemens S7-1200P L C to control the automatic sample outlet to open the outlet, so as to control the sample support lifting device to work, and the servo motor drives the automatic sample support to act through the link mechanism, so as to achieve the effect of controlling the sample support to lift.
The present embodiment further provides a digital pendulum impact testing machine, including the pendulum impact testing machine of the above embodiments, further including:
and the data information management unit is used for processing, displaying and storing the impact parameters acquired by the data acquisition unit, wherein the impact parameters acquired by the data acquisition unit are uploaded to the data information management unit through the control system.
The digitalized information management unit is a software part of the testing machine, specifically adopts VB development platform design, and comprises 4 modules of a user login system, a parameter setting and checking system, a data acquisition and display system and a data management system. Through the user software interface, the system management personnel can monitor the field data of the testing machine in real time and analyze and compare the real-time trend curve. In addition, through a data management system of a user software interface, system management personnel can perform operations such as query, copy and processing on historical data stored in a local database.
The testing machine further comprises an ADAM4520 converter which is used for uploading data acquired by the data acquisition unit to a data information management unit of an upper computer after analog-to-digital conversion.
The data information management unit is also connected with a printing device, and the printing device is used for printing a test report after the data information management unit acquires and analyzes data.
The user login module comprises user login, user name adding, user name modifying and user name deleting and login passwords, and safety guarantee is provided for experiments.
The parameter setting and checking system comprises 3 submodules of a parameter setting and equipment checking module and an experiment data file management module, equipment is checked before an experiment, initial parameters such as relevant data, notch types and experiment temperatures of a sample are recorded, and an experiment report initial file is generated.
The equipment checking module completes the measurement of the energy loss of the testing machine by sending operation commands such as lifting, hanging, pin withdrawing, impacting, swinging, automatic lifting and the like to P L C according to the national standard inspection method of the impact testing machine, and detects the swinging period of the pendulum bob within the specified time and angle so as to judge whether the testing machine is qualified.
After the impact test operation module finishes the sending of operation commands such as lifting, placing, pin withdrawing, impacting, scram and feeding and the control of corresponding actions, the data acquisition and display system enables the real-time data display module to lift the pendulum bob after the pendulum bob falls and breaks a sample, wherein the pendulum bob is acquired by the rotary encoderJudging whether the angle is 'dead beat' according to a formula AkG L (cos β -cos α) (note: aKThe method comprises the steps of calculating the absorption energy and the impact toughness required by a punched sample by using the pendulum weight (N), L, the pendulum length (mm), a, the maximum angle (DEG) of the pendulum before punching the sample and β, the maximum angle (DEG) of the pendulum after punching the sample, and displaying dynamic mechanical performance indexes of the impact power, the elastic power, the fracture power, the crack initiation power, the crack propagation power, the elastic load, the yield load, the maximum load, the fracture load and the like in real time by using a data acquisition and display system, and simultaneously providing a curve of the impact force and the deformation along with time.
The data management system comprises a sample data entry module, a test data query module and a test data report printing module. The sample data entry module completes the input, modification, deletion and check of the original record of the tested sample, and mainly comprises parameters such as test date, sample source, sample number, material mark, sampling direction, gap width, gap height, tester, test temperature, pendulum lift angle and the like. The test data query module queries test results of the test samples by using user names, file names, test dates, sample numbers, testing machine numbers and the like as keywords, and displays the test results to a user in an Access or Excel format. And the test data report printing module outputs and prints the test result, the impact force and deformation change curve with time in a Word format test report.
Referring to fig. 3, the overall flow of the impact test method performed using the pendulum test impact tester described above is as follows:
the first step is as follows: high low temperature automatic feeding opens the automatic export of sample by industrial control machine control, and then promotes the exit with the sample support by sample elevating gear, opens the sample and presss from both sides, puts into the sample that awaits measuring, and self-holding sample again falls to high low temperature test stove in through sample elevating gear, and the automatic export of self-closing sample seals high low temperature test case. After the test box is closed, the test temperature is set through the MR13 temperature control instrument, when the temperature required by the test is reached, the automatic sample outlet is automatically controlled to be opened, the sample support lifting device is automatically controlled to be opened, and the sample support arrives at the designated position to wait for the impact of the pendulum bob.
The second step is that: the industrial personal computer controls the programmable controller, the servo motor is further controlled to rotate, the servo motor drives the connecting rod to rotate, the swing arm is driven to rotate through the rotating shaft, when the highest point is reached, the swing arm is automatically released and falls freely to hit a sample to be detected, and the pendulum bob is automatically reset after hitting is completed.
The third step: the collected temperature, displacement, angular displacement and impact force data are transmitted to an industrial personal computer through an MODBUS, and after being processed by software, curves of force-time, displacement-time, energy-time, force-displacement, energy-displacement and the like are automatically generated and an experimental report is printed.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to make modifications or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A pendulum impact testing machine, comprising:
the impact testing machine is used for carrying out an impact test on the sample through the pendulum bob;
the automatic feeding device comprises a high-low temperature test furnace, an automatic sample ejection device, an automatic sample support and an automatic sample outlet, wherein the high-low temperature test furnace is used for adjusting the temperature of a sample, the automatic sample ejection device is used for automatically ejecting the sample meeting the temperature requirement, the automatic sample support is used for automatically ejecting the sample to a position to be tested for impact, and the automatic sample outlet is used for automatically sending out the sample;
the data acquisition unit is used for acquiring impact parameters of the impact testing machine during impact testing;
the control system comprises an impact control system, a temperature control system and a feeding control system, wherein the impact control system is used for controlling impact parameters of the impact testing machine, the temperature control system is used for controlling temperature parameters of the high-low temperature testing furnace, and the feeding control system is used for controlling the automatic feeding device to execute a feeding process.
2. The pendulum impact testing machine according to claim 1, wherein the impact testing machine comprises a pendulum impact device, an impact control device and a test bench device, the pendulum impact device comprises a pendulum and a swing arm connected with the pendulum, the impact control device comprises an encoder, a rotating shaft, a P L C controller and a servo motor, the test bench device comprises a protective cover, a support, a base and a visual glass protection plate, the other end of the pendulum is rotatably connected with the upper end of a support rod through the rotating shaft, the lower end of the support rod is fixed on the base, the support is arranged outside the base and used for stabilizing the base, the protective cover is arranged on the base to cover the lower part of the impact track of the pendulum impact device, the visual glass protection plate is arranged in the middle hollow part of the protective cover, the servo motor is used for driving the rotating shaft under the control of the P L C controller, and the encoder is used for monitoring the rotation angle and the rotation speed of the servo motor.
3. The pendulum impact testing machine of claim 2, wherein the shield is removably coupled to the base, the swing arm and the shaft are rotatably coupled via a bearing, and the swing arm and the pendulum are fixedly coupled via a bolt.
4. A pendulum impact tester as claimed in claim 2 wherein the autoloader is positioned on the base at a position below the impact trajectory of the pendulum impact device.
5. The pendulum impact testing machine of claim 1, wherein the data collection unit comprises an impact force sensor, a displacement sensor, an angular displacement sensor and a temperature sensor, the impact force sensor is used for collecting impact force to a sample when the impact testing machine works, the displacement sensor is used for collecting sample displacement when the impact testing machine works, the angular displacement sensor is used for collecting pendulum angle when the impact testing machine performs pendulum impact, and the temperature sensor is used for collecting sample temperature when the impact testing machine works.
6. The pendulum impact tester as claimed in claim 5, wherein the temperature of the high and low temperature test furnace is adjusted by an MR13 temperature controller, and the temperature sensor collects the sample temperature, performs analog-to-digital conversion, and transmits the sample temperature to the MR13 temperature controller to perform closed-loop control on the sample temperature.
7. The pendulum impact tester of claim 5, wherein the data acquisition unit further comprises a load sensor for recording load changes during impact to infer energy changes.
8. A pendulum impact testing system comprising the pendulum impact testing machine of any one of claims 1 to 7, further comprising:
and the data information management unit is used for processing, displaying and storing the impact parameters acquired by the data acquisition unit, wherein the impact parameters acquired by the data acquisition unit are uploaded to the data information management unit through the control system.
9. The pendulum impact experiment system of claim 8, further comprising an ADAM4520 converter for uploading data collected by the data collection unit to a data information management unit of an upper computer after analog-to-digital conversion.
10. A pendulum impact testing system in accordance with claim 8, wherein the datamation management unit is further coupled to a printing device for printing a test report after the datamation management unit obtains data and analyzes the data.
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