CN203455227U - Point load test instrument - Google Patents

Point load test instrument Download PDF

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Publication number
CN203455227U
CN203455227U CN201320600015.2U CN201320600015U CN203455227U CN 203455227 U CN203455227 U CN 203455227U CN 201320600015 U CN201320600015 U CN 201320600015U CN 203455227 U CN203455227 U CN 203455227U
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CN
China
Prior art keywords
loading head
vertical
fixed
instrument
point load
Prior art date
Application number
CN201320600015.2U
Other languages
Chinese (zh)
Inventor
王敏
万文
赵延林
Original Assignee
湖南科技大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 湖南科技大学 filed Critical 湖南科技大学
Priority to CN201320600015.2U priority Critical patent/CN203455227U/en
Application granted granted Critical
Publication of CN203455227U publication Critical patent/CN203455227U/en

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Abstract

The utility model discloses a point load test instrument which comprises an instrument supporting system, a loading mechanism and a force test system, wherein the instrument supporting system comprises a base, a fixed cross beam, a right vertical beam and a left vertical beam; the loading mechanism comprises a jack, a movable cross beam, a lower loading head and an upper loading head; a test piece is mounted between the lower loading head and the upper loading head; the force test system comprises a pressure sensor, an ultrasonic distance measurement instrument, a microprocessor, a liquid crystal display and a power supply; the pressure sensor is arranged between the upper loading head and the lower loading head; the ultrasonic distance measurement instrument is arranged on the lower end surface of the fixed cross beam; the microprocessor, the liquid crystal display and the power supply are arranged on the upper end surface of the fixed cross beam. The point load test instrument is simple in structure, convenient to operate and carry and high in test result precision, achieves automatic microcomputer calculation, and is suitable for use in the field of point load tests of building construction and the like.

Description

Point load tests instrument

Technical field

The utility model relates to testing tool, relates in particular to a kind of point load tests instrument.

Background technology

Traditional point load tests instrument adopts the length of rock sample that vernier caliper measurement is surveyed, and records the peak load of rock sample by tensimeter, and due to the impact of human factor, not only test process is complicated, and the data of surveying are largely subject to the impact of human factor.Now, point load tests instrument used shows the length of surveyed rock sample and the peak load of rock sample by digital display tube, and then by calculating the point load strength index of rock sample, but computation process still needs manual operation, and bring the defects such as calculating is inconvenient, and efficiency is low.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and the point load tests that a kind of degree of accuracy is high, testing efficiency is high instrument is provided.

The purpose of this utility model is to realize like this, a kind of point load tests instrument, comprise instrument suppotr support system, load maintainer and dynamometric system, described instrument suppotr support system comprises base, fixed cross beam, right vertical beam, left vertical beam, one end of right vertical beam and left vertical beam is fixedly connected with base respectively, and the other end of right vertical beam and left vertical beam is fixedly connected with fixed cross beam respectively;

Described load maintainer comprises lifting jack, moving beam, lower loading head and upper loading head, lifting jack is fixedly connected with base, taking over a business with middle part, moving beam lower surface of lifting jack is fixedly connected with, the two ends of moving beam are provided with through hole, moving beam is by through hole and right vertical beam, left vertical beam fit is slidably connected, the middle part, upper surface of moving beam is provided with lower loading head, the middle part, lower surface of fixed cross beam is provided with loading head, lower loading head is mutually vertical corresponding with upper loading head, between lower loading head and upper loading head, test specimen is installed;

Described dynamometric system comprises pressure transducer, ultrasonic distance measuring apparatus, microprocessor, liquid crystal display and power supply, between upper loading head and fixed cross beam, be provided with pressure transducer, fixed cross beam lower surface is provided with ultrasonic distance measuring apparatus, fixed cross beam upper surface is provided with microprocessor, liquid crystal display and power supply, and pressure transducer is connected with microprocessor by wire respectively with ultrasonic distance measuring apparatus.

For the utility model structure is further optimized, its further step is: pressure transducer is S type pressure transducer, and fixed cross beam width is more than or equal to the width of moving beam.

The beneficial effects of the utility model are: adopt ultrasonic distance measuring apparatus to measure the length of test specimen, pressure transducer is measured the load of rock sample, microprocessor processes ultrasonic distance measuring apparatus and data that pressure transducer is surveyed, draw experimental result, and experimental result is shown in to LCDs.Simple to operate, without artificial calculating, and test findings degree of accuracy is high.

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model point load tests instrument.

Fig. 2 is the dynamometric system theory diagram of the utility model point load tests instrument.

In figure: 1, base, 2, lifting jack, 3, moving beam, 4, lower loading head, 5, upper loading head, 6, pressure transducer, 7, ultrasonic distance measuring apparatus, 8, fixed cross beam, 9, power supply, 10, microprocessor, 11, liquid crystal display, 12, right vertical beam, 13, left vertical beam, 14, test specimen.

Embodiment

As shown in accompanying drawing 1, Fig. 2: a kind of point load tests instrument, comprise instrument suppotr support system, load maintainer and dynamometric system, described instrument suppotr support system comprises base 1, fixed cross beam 8, right vertical beam 12, left vertical beam 13, one end of right vertical beam 12 and left vertical beam 13 is fixedly connected with base 1 respectively, and the other end of right vertical beam 12 and left vertical beam 13 is fixedly connected with fixed cross beam 8 respectively;

Described load maintainer comprises lifting jack 2, moving beam 3, lower loading head 4 and upper loading head 5, lifting jack 2 is fixedly connected with base 1, taking over a business with moving beam 3 middle parts, lower surface of lifting jack 2 is fixedly connected with, the two ends of moving beam 3 are provided with through hole, moving beam 3 is by through hole and right vertical beam 12, left vertical beam 13 fits are slidably connected, the middle part, upper surface of moving beam 3 is provided with lower loading head 4, the middle part, lower surface of fixed cross beam 8 is provided with loading head 5, lower loading head 4 is mutually vertical corresponding with upper loading head 5, between lower loading head 4 and upper loading head 5, test specimen 14 is installed,

Described dynamometric system comprises pressure transducer 6, ultrasonic distance measuring apparatus 7, microprocessor 10, liquid crystal display 11 and power supply 9, between upper loading head 5 and fixed cross beam 8, be provided with pressure transducer 6, fixed cross beam 8 lower surfaces are provided with ultrasonic distance measuring apparatus 7, fixed cross beam 8 upper surfaces are provided with microprocessor 10, liquid crystal display 11 and power supply 9, and pressure transducer 6 is connected with microprocessor 10 by wire respectively with ultrasonic distance measuring apparatus 7.Fixed cross beam 8 width are more than or equal to the width of moving beam 3.The preferred S type pressure transducer of pressure transducer 6.

Embodiment: make moving beam 3 and lower loading head 4 increase by lifting jack 2 mobile, extremely lower loading head 4 and upper loading head 5 clamp rock sample 14, shut-down operation lifting jack 2; Switch on power 9,9 pairs of pressure transducers 6 of power supply, microprocessor 10, liquid crystal display 11 power supplies, now by ultrasonic distance measuring apparatus 7, record the distance 1 between fixed cross beam 8 and moving beam 3, then continue operation lifting jack 2 to rock sample 14 failure damages, in the process of operation lifting jack 2, microprocessor 10 constantly records point loading size Pi (i=1,2 that pressure transducer 6 records, 3 ...).Microprocessor 10 first calculates test specimen length L=1-11-12-13, and (11 is the vertical length of lower loading head 4,12 is the vertical length of upper loading head 5,13 is the vertical length of pressure transducer 6,11,12,13 are fixed value), obtain point loading maximal value P=max (Pi) (i=1,2,3 simultaneously, .), finally draw point load strength index I s=P/L 2, microprocessor 10 receives data and calculates result and be sent to liquid crystal display 11, by liquid crystal display 11 show the rock sample of surveying 14 point load strength indexes.

The utility model is simple in structure, operation, easy to carry, and realize microcomputer automatic measurement & calculation, test result degree of accuracy is high, is applicable to the point load tests fields such as building operation.

Claims (3)

1. a point load tests instrument, is characterized in that, described point load tests instrument comprises instrument suppotr support system, load maintainer and dynamometric system,
Described instrument suppotr support system comprises base (1), fixed cross beam (8), right vertical beam (12), left vertical beam (13), one end of right vertical beam (12) and left vertical beam (13) is fixedly connected with base (1) respectively, and the other end of right vertical beam (12) and left vertical beam (13) is fixedly connected with fixed cross beam (8) respectively;
Described load maintainer comprises lifting jack (2), moving beam (3), lower loading head (4) and upper loading head (5), lifting jack (2) is fixedly connected with base (1), taking over a business with middle part, moving beam (3) lower surface of lifting jack (2) is fixedly connected with, the two ends of moving beam (3) are provided with through hole, moving beam (3) is by through hole and right vertical beam (12), left vertical beam (13) fit is slidably connected, the middle part, upper surface of moving beam (3) is provided with lower loading head (4), the middle part, lower surface of fixed cross beam (8) is provided with loading head (5), lower loading head (4) is mutually vertical corresponding with upper loading head (5), between lower loading head (4) and upper loading head (5), test specimen (14) is installed,
Described dynamometric system comprises pressure transducer (6), ultrasonic distance measuring apparatus (7), microprocessor (10), liquid crystal display (11) and power supply (9), between upper loading head (5) and fixed cross beam (8), be provided with pressure transducer (6), fixed cross beam (8) lower surface is provided with ultrasonic distance measuring apparatus (7), fixed cross beam (8) upper surface is provided with microprocessor (10), liquid crystal display (11) and power supply (9), and pressure transducer (6) is connected with microprocessor (10) by wire respectively with ultrasonic distance measuring apparatus (7).
2. point load tests instrument according to claim 1, is characterized in that, pressure transducer 6 is S type pressure transducer.
3. point load tests instrument according to claim 1, is characterized in that, fixed cross beam (8) width is more than or equal to the width of moving beam (3).
CN201320600015.2U 2013-09-27 2013-09-27 Point load test instrument CN203455227U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320600015.2U CN203455227U (en) 2013-09-27 2013-09-27 Point load test instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320600015.2U CN203455227U (en) 2013-09-27 2013-09-27 Point load test instrument

Publications (1)

Publication Number Publication Date
CN203455227U true CN203455227U (en) 2014-02-26

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Application Number Title Priority Date Filing Date
CN201320600015.2U CN203455227U (en) 2013-09-27 2013-09-27 Point load test instrument

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104865133A (en) * 2015-06-10 2015-08-26 西安科技大学 Continuous loading rock mechanical device matched with X-optical mechanical scanning
CN106680099A (en) * 2017-02-17 2017-05-17 泉州品创知识产权服务有限公司 High precision point load tester with automatic detection function
CN106840895A (en) * 2016-12-23 2017-06-13 南京工程学院 Apply the guarantor of load in a kind of hollow wing balsh beam stability test to power apparatus
CN108398331A (en) * 2018-02-23 2018-08-14 山东大学 A kind of rock multiple information acquisition system and test method
WO2018196148A1 (en) * 2017-04-28 2018-11-01 大连理工大学 Method for establishment of curve illustrative of relationship between interface ultrasonic reflectance and pressure based on rounded planar contact theory and load experimental station

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104865133A (en) * 2015-06-10 2015-08-26 西安科技大学 Continuous loading rock mechanical device matched with X-optical mechanical scanning
CN106840895A (en) * 2016-12-23 2017-06-13 南京工程学院 Apply the guarantor of load in a kind of hollow wing balsh beam stability test to power apparatus
CN106680099A (en) * 2017-02-17 2017-05-17 泉州品创知识产权服务有限公司 High precision point load tester with automatic detection function
CN106680099B (en) * 2017-02-17 2019-02-19 江苏金沙地理信息有限公司 A kind of high-precision dot load test instrument with automatic detection function
WO2018196148A1 (en) * 2017-04-28 2018-11-01 大连理工大学 Method for establishment of curve illustrative of relationship between interface ultrasonic reflectance and pressure based on rounded planar contact theory and load experimental station
CN108398331A (en) * 2018-02-23 2018-08-14 山东大学 A kind of rock multiple information acquisition system and test method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140226

Termination date: 20160927