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CN205067233U - Two dimension apply pressure machine - Google Patents

Two dimension apply pressure machine Download PDF

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Publication number
CN205067233U
CN205067233U CN201520887294.4U CN201520887294U CN205067233U CN 205067233 U CN205067233 U CN 205067233U CN 201520887294 U CN201520887294 U CN 201520887294U CN 205067233 U CN205067233 U CN 205067233U
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CN
China
Prior art keywords
clamping plate
sample
load
universal tester
electronic universal
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Expired - Fee Related
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CN201520887294.4U
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Chinese (zh)
Inventor
赵维
宋晓龙
范宁
吴昊
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Dalian University of Technology
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Dalian University of Technology
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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The utility model belongs to the technical field of the construction project, a two dimension apply pressure machine that survey rock sample intensity and deformation characteristic in the geotechnical engineering test is related to. The device includes horizontal loading system, applys X axle horizontal direction load to can realize that sample force center is unchangeable under horizontal loading, vertical loading system, the load of applying the vertical direction of Z axle, data acquisition and processing system, the data acquisition and processing data to the realization is to experimental closed -loop control. The utility model discloses measurable quantity rock sample is two to intensity and deformation characteristic under the stress state to guarantee that the force center of sample is unchangeable under horizontal direction loading, the device degree of automation is high, easy operation, measuring error is little, can realize high accuracy, wide region, multi -functional servo control, can be convenient be used for indoor experiment and job site.

Description

Two dimension on-load pressure machine
Technical field
The utility model belongs to construction project technical field, relates to the device measuring rock sample Strength and Dformation characteristic in the test of a kind of Geotechnical Engineering.
Background technology
Rock is the natural noncontinuity medium that a kind of inside exists joint and crack, and the measurement of its Strength and Dformation is more difficult.Current, the common method measuring rock strength and deformation characteristic mainly contains: the experiment of uniaxial tests, normal triaxial and true triaxial experiment.Uniaxial tests is without under the limit condition of side, vertically (Z axis) applies pressure, until sample destroys, measure the uniaxial compressive strength of sample, the method is simple to operate, be usually used in strength grading and the petrographic description of rock, but size effect is obvious, the reliability recording intensity is lower, and cannot measure the deformation of rock; Ordinary triaxial test is under hoop applies certain confined pressure condition, vertically (Z axis) applies pressure until sample destroys, the strength envelope of rock can be determined by test, and draw rock cohesion and coefficient of interal friction according to mole of-coulomb of strength theory, the method stress state is obvious, simple to operate, but the feature loaded due to normal triaxial instrument hoop, make on surface level two principle stresses always equal, cannot the impact of dummy level stress separately; True triaxial test is the masterpiece applying different size in X, Y, Z axis three directions of sample is principle stress, until sample destroys, rock cohesion and coefficient of interal friction is drawn according to mole of-coulomb of strength theory, the method independently can apply principle stress in three directions, and principle stress freely can be changed in three directions, the tension and compression composite test of the single shaft of rock type materials, twin shaft and true triaxial can be completed as requested, but its rigid boundary easily causes stress distribution uneven, and instrumentation is complicated, fake expensive.Consider the present situation of current rock strength and deformation characteristic assay method, traditional test methods is difficult to Measurement accuracy sample in two Strength and Dformation characteristics under stress state, and in measuring process, cannot ensure that the center of effort of sample is constant, affect the reliability of experimental result.
Utility model content
The utility model overcomes in the test of conventional Geotechnical Engineering and is difficult to measure rock sample in two Strength and Dformation characteristics under stress state, and cannot deficiency that fully sample center of effort is constant in warranty test process.The utility model passes through (X-axis) in the horizontal direction and applies constant load, to wait strain controlling mode or equal stress control mode at vertical direction (Z axis) load application, thus achieve the Strength and Dformation characteristic measuring sample two under stress state, and by apparatus design, ensure that sample center of effort is constant under load action in the horizontal direction.
The technical solution of the utility model is: a kind of two-dimentional on-load pressure machine, comprises horizontal addload system, vertically loading system and data acquisition processing system; Horizontal addload system comprises 4 cross-brace, three pieces of clamping plate, servomotor, speed reduction unit, load transducer, ball screw, extensometer and guide rails, vertical loading system comprises electronic universal tester, 2 templin chucks, circular polishing head and cushion caps, and data acquisition processing system comprises computing machine and controller;
Horizontal addload system: 4 cross-brace are successively through four angle points of square clamping plate I, clamping plate II and clamping plate III, and the two ends of 4 cross-brace are fixed by screw thread, form a rectangular parallelepiped framed structure; Rectangular parallelepiped framed structure entirety is placed on guide rail, and clamping plate I and clamping plate III move on guide rail simultaneously, and the clamping plate II being positioned at centre transversely support and are free to slide, and realizes sample center of effort under horizontal force action constant by this design; Servomotor one end is installed on inside clamping plate I, other end connection reducer, controls power of motor; Speed reduction unit is connected by ball screw with clamping plate II; Installed load sensor on ball screw, settles extensometer in clamping plate II side, carries out Real-Time Monitoring to sample to be tested distortion;
Vertical loading system: electronic universal tester adopts door type structure, hoistable platform is installed in the electronic universal tester inside of door type structure, forms two work space up and down; Two templin chucks are arranged on the downside of electronic universal tester top cross-bar and on the upside of lifting table respectively, the templin chuck b realizing self disassembling according to requirements wherein on the upside of lifting table; Circular polishing head is housed, for applying pressure on the downside of lifting table; Cushion cap is rigid platfor, is installed on electronic universal tester base, is used for placing sample to be tested;
Data acquisition processing system: the sensor of horizontal addload system and vertical loading system, speed reduction unit are connected with controller with servomotor, and controller is connected to computing machine; Computer input instruction, controls motor by controller, speed reduction unit carries out work, and sensor Real-Time Monitoring load and misalignment, feed back signal to controller, and import computing machine, realizes the closed-loop control to total system thus.Described sensor comprises the built-in sensors of extensometer, load transducer and electronic universal tester.
When using two-dimentional on-load pressure machine to carry out compression experiment, first sample being placed on cushion cap, above sample, placing rigidity backing plate, passing to sample uniformly to make load; Regulate the position of lifting table, make the circular polishing head below lifting table and rigidity pad contact; Regulate the position clamping sample of clamping plate II and clamping plate III.Then input the parameters such as load, rate of loading, load control mode in a computer according to testing requirements, loading system is controlled.During on-test, lifting table declines, by circular polishing head, sample is vertically loaded, servomotor is after speed reduction unit speed governing, advance clamping plate II pair of sample to apply pressure by ball screw, meanwhile, motor drives clamping plate III to move forward the reacting force of clamping plate I by cross-brace, now sample can be subject to clamping plate II and clamping plate III and apply the contrary power in equal and opposite in direction, direction, thus guarantees that the center of effort of sample is constant in process of the test.Load transducer imports the data of collection into controller and computing machine, Computer Analysis the data obtained, and controls servomotor acceleration or deceleration according to analysis result by controller, achieves the closed-loop control to horizontal direction (X-axis) goal pressure.The distortion recorded and load are fed back to computing machine by extensometer and load transducer, and computing machine carries out data processing and draws.
Carry out stretching or torsion shear test time, first templin chuck is installed, rock sample is fixed in two chucks, then inputs load in a computer according to testing requirements, the parameters such as rate of loading.After on-test, lifter declines, thus realizes the stretching to sample; And for turning round the situation of cutting, the templin chuck being arranged on electronic test machine top cross-bar is rotated by self and applies moment of torsion to sample.The payload values recorded distortion is fed back to computing machine by the load transducer of universal testing machine inside and displacement transducer, carries out data processing and draws.
Effect of the present utility model and benefit are: can measure rock sample in two Strength and Dformation characteristics under stress state, and ensure that in the horizontal direction under load action, the center of effort of sample is constant.This plant automation degree is high, simple to operate, and measuring error is little, can realize high precision, wide region, multi-functional servocontrol, can easily for shop experiment and working-yard.
Accompanying drawing explanation
Fig. 1 is the utility model stereographic map.
Fig. 2 is the utility model front view.
Fig. 3 is the utility model side view.
In figure: 1 cross-brace; 2 clamping plate I; 3 clamping plate II; 4 clamping plate III; 5 servomotors; 6 speed reduction units; 7 load transducers; 8 ball screws; 9 extensometers; 10 guide rails; 11 cushion caps; 12 electronic universal testers; 13 circular polishing heads; 14 templin chucks; 15 samples I; 16 samples II.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with technical scheme (and accompanying drawing).
In FIG, cross-brace 1 is simultaneously through four angle points of square clamping plate I 2, clamping plate II 3, clamping plate III 4, and the two ends of cross-brace 1 and clamping plate I 2 and clamping plate III 4 are fixed with screw thread, form a rectangular parallelepiped framed structure, entirety is placed on guide rail 10, and because two ends are fixed, clamping plate I 2 and clamping plate III 4 can only move on guide rail simultaneously, and the clamping plate II 3 being positioned at centre transversely can support 1 slide anteroposterior, realize sample center of effort under horizontal force action by this design constant; Servomotor 5 one end is installed on inside clamping plate I 2, other end connection reducer 6, controls power of motor; Speed reduction unit 6 is connected by ball screw 8 with clamping plate II 3; Installed load sensor 7 on ball screw 8, and settle extensometer 9 in clamping plate II 3 side, Real-Time Monitoring is carried out to sample deformation.Electronic universal tester 12 adopts portal frame construction, and controllable lift platform is installed in electronic universal tester 12 inside, forms two work space up and down; Two templin chucks 14 are arranged on the downside of testing machine 12 top cross-bar and on the upside of lifting table respectively, and the templin chuck 14 wherein on the upside of lifting table according to requirements can realizing self disassembling; Circular polishing head 13 is housed, for applying pressure on the downside of lifting table; Cushion cap 11 is rigid platfor, is installed on tester base, is used for placing sample.
When measuring, sample to be tested is placed on cushion cap 11, rigidity backing plate is placed above sample to be tested, guarantee that load Transmit evenly is to sample to be tested, regulate the position of electronic universal tester 12 lifting table, make the circular polishing head 13 below lifting table and rigidity pad contact, regulate clamping plate II 3 to make it contact with sample to be tested with the position of clamping plate III 4.Then input the parameters such as load, rate of loading, load control mode in a computer according to testing requirements, loading system is controlled.When pressurization starts, lifting table declines, and is vertically loaded by circular polishing head 13 pairs of samples II 3.Simultaneously, servomotor 5 advances clamping plate II 3 pairs of samples to apply pressure through speed reduction unit 6 speed governing rear drive ball screw 8, the reacting force of servomotor 5 pairs of clamping plate I 2 drives clamping plate III 4 to move forward by cross-brace 1, sample can be subject to the contrary power in equal and opposite in direction that clamping plate I 2 and clamping plate III 4 apply simultaneously, direction simultaneously, thus ensure that the center of effort of sample under the effect applying horizontal loading is constant.Load transducer 7 imports the data of collection into controller and computing machine, and computing machine regulates the rotating speed of servomotor 5 by controller according to analysis result, achieve the closed-loop control to goal pressure.Extensometer 9 and the built-in force snesor of electronic universal tester 12 can import the distortion recorded and force value into computer.So just achieve rock two to the measurement of Strength and Dformation characteristic under stress state.

Claims (1)

1. a two-dimentional on-load pressure machine, is characterized in that, this two-dimentional on-load pressure machine comprises horizontal addload system, vertically loading system and data acquisition processing system;
Horizontal addload system comprises 4 cross-brace, three pieces of clamping plate, servomotor, speed reduction unit, load transducer, ball screw, extensometer and guide rails, 4 cross-brace are successively through four angle points of square clamping plate I, clamping plate II and clamping plate III, the two ends of 4 cross-brace are fixed by screw thread, form a rectangular parallelepiped framed structure; Rectangular parallelepiped framed structure entirety is placed on guide rail, and clamping plate I and clamping plate III move on guide rail simultaneously, and the clamping plate II being positioned at centre transversely support and are free to slide; Servomotor one end is installed on inside clamping plate I, other end connection reducer, controls power of motor; Speed reduction unit is connected by ball screw with clamping plate II; Installed load sensor on ball screw, settles extensometer in clamping plate II side, carries out Real-Time Monitoring to sample to be tested distortion;
Vertical loading system comprises electronic universal tester, 2 templin chucks, circular polishing head and cushion caps, and electronic universal tester adopts door type structure, and hoistable platform is installed in the electronic universal tester inside of door type structure, forms two work space up and down; Two templin chucks are arranged on the downside of electronic universal tester top cross-bar respectively and on the upside of lifting table, the templin chuck b wherein on the upside of lifting table dismantles according to requirements; Circular polishing head is housed, for applying pressure on the downside of lifting table; Cushion cap is rigid platfor, is installed on electronic universal tester base, is used for placing sample to be tested;
Data acquisition processing system comprises computing machine and controller, the sensor of horizontal addload system and vertical direction loading system, speed reduction unit is connected with controller with servomotor, and controller is connected to computing machine; Described sensor comprises the built-in sensors of extensometer, load transducer and electronic universal tester.
CN201520887294.4U 2015-11-09 2015-11-09 Two dimension apply pressure machine Expired - Fee Related CN205067233U (en)

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Application Number Priority Date Filing Date Title
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CN205067233U true CN205067233U (en) 2016-03-02

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106226156A (en) * 2016-09-21 2016-12-14 中国矿业大学(北京) A kind of coal rock specimen fixture under the conditions of coupled static-dynamic loadingi
CN106769514A (en) * 2017-01-13 2017-05-31 绍兴文理学院 The multiple dimensioned testing machine transverse direction loading device of rock uniaxiality strength
CN106840907A (en) * 2017-01-20 2017-06-13 西华大学 A kind of reliability test system of controllable metal test block stress state
CN107803581A (en) * 2017-10-31 2018-03-16 安徽景隆金属材料有限公司 A kind of Joining Technology method of heterogeneous material steel
CN108398332A (en) * 2018-04-03 2018-08-14 苏州拓博机械设备有限公司 A kind of load testing machine
CN108398326A (en) * 2018-05-02 2018-08-14 苏州热工研究院有限公司 Portable ladder crosspiece experimental rig and the method for carrying out crosspiece strength test using it
CN108732037A (en) * 2018-07-04 2018-11-02 大连理工大学 A kind of low temperature resistant portable sea ice tensile and compression testing machine system
CN110441041A (en) * 2019-08-07 2019-11-12 烟台中宇航空液压有限公司 Aerial hydraulic attachments linear displacement loading test device
CN112432853A (en) * 2020-11-19 2021-03-02 中国矿业大学 Universal testing machine with lateral non-uniform deformation testing function
CN112540004A (en) * 2020-12-29 2021-03-23 湖南工程学院 Underground engineering three-way loading test device with displacement feedback and loading test method
CN112649299A (en) * 2019-10-10 2021-04-13 中国航天科工飞航技术研究院(中国航天海鹰机电技术研究院) Structural strength testing device
CN113075036A (en) * 2021-03-25 2021-07-06 山东科技大学 Miniature heavy-load uniaxial pressure test system with mechanical arm and test method

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106226156A (en) * 2016-09-21 2016-12-14 中国矿业大学(北京) A kind of coal rock specimen fixture under the conditions of coupled static-dynamic loadingi
CN106769514A (en) * 2017-01-13 2017-05-31 绍兴文理学院 The multiple dimensioned testing machine transverse direction loading device of rock uniaxiality strength
CN106840907A (en) * 2017-01-20 2017-06-13 西华大学 A kind of reliability test system of controllable metal test block stress state
CN106840907B (en) * 2017-01-20 2023-07-25 西华大学 Reliability test system for controllable metal test block stress state
CN107803581A (en) * 2017-10-31 2018-03-16 安徽景隆金属材料有限公司 A kind of Joining Technology method of heterogeneous material steel
CN108398332A (en) * 2018-04-03 2018-08-14 苏州拓博机械设备有限公司 A kind of load testing machine
CN108398326A (en) * 2018-05-02 2018-08-14 苏州热工研究院有限公司 Portable ladder crosspiece experimental rig and the method for carrying out crosspiece strength test using it
CN108398326B (en) * 2018-05-02 2024-05-31 苏州热工研究院有限公司 Portable ladder crosspiece test device and crosspiece strength test method using same
CN108732037A (en) * 2018-07-04 2018-11-02 大连理工大学 A kind of low temperature resistant portable sea ice tensile and compression testing machine system
CN110441041B (en) * 2019-08-07 2021-08-06 烟台知兴知识产权咨询服务有限公司 Linear displacement loading test device for aviation hydraulic accessory
CN110441041A (en) * 2019-08-07 2019-11-12 烟台中宇航空液压有限公司 Aerial hydraulic attachments linear displacement loading test device
CN112649299A (en) * 2019-10-10 2021-04-13 中国航天科工飞航技术研究院(中国航天海鹰机电技术研究院) Structural strength testing device
CN112649299B (en) * 2019-10-10 2022-10-18 中国航天科工飞航技术研究院(中国航天海鹰机电技术研究院) Structural strength testing device
CN112432853A (en) * 2020-11-19 2021-03-02 中国矿业大学 Universal testing machine with lateral non-uniform deformation testing function
CN112540004A (en) * 2020-12-29 2021-03-23 湖南工程学院 Underground engineering three-way loading test device with displacement feedback and loading test method
CN113075036A (en) * 2021-03-25 2021-07-06 山东科技大学 Miniature heavy-load uniaxial pressure test system with mechanical arm and test method
CN113075036B (en) * 2021-03-25 2023-02-14 山东科技大学 Miniature heavy-load uniaxial pressure test system with mechanical arm and test method

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Granted publication date: 20160302

Termination date: 20211109