CN203224402U - Portable extensometer clamping device - Google Patents

Portable extensometer clamping device Download PDF

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Publication number
CN203224402U
CN203224402U CN 201320231113 CN201320231113U CN203224402U CN 203224402 U CN203224402 U CN 203224402U CN 201320231113 CN201320231113 CN 201320231113 CN 201320231113 U CN201320231113 U CN 201320231113U CN 203224402 U CN203224402 U CN 203224402U
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CN
China
Prior art keywords
extensometer
fixed
clamping
push pedal
spring
Prior art date
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Application number
CN 201320231113
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Chinese (zh)
Inventor
傅志强
孔令霞
靳宏
刘锡贝
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Chemicals Minerals And Metals Testing Center Tianjin Entry-Exit Inspection And Quarantine Bure
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Chemicals Minerals And Metals Testing Center Tianjin Entry-Exit Inspection And Quarantine Bure
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Priority to CN 201320231113 priority Critical patent/CN203224402U/en
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Publication of CN203224402U publication Critical patent/CN203224402U/en
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Abstract

The utility model relates to a portable extensometer clamping device. The threaded ends of two fastening rods penetrate through through holes in a rectangular plate of a fixing frame and then are fixed with a push plate, respectively; a spring is sleeved onto each of the two fastening rods between the push plate and the rectangular plate; the two ends of each spring are in contact with the plate tops of the push plate and the rectangular plate, respectively; one end of a connecting rod is fixed with the push plate; the other end of the connecting rod penetrates through the through hole in the rectangular plate of the fixing frame and is connected with a nut; one end of an extensometer is fixed in the frame body of the fixing frame; two blade contacts at the other end of the extensometer are toward the toothed ends of transverse short rods of the fastening rods. The portable extensometer clamping device is easy to operate and can be operated by one single hand; the portable extensometer clamping device is good in centering property; the two up-and-down contacts are clamped at the same time so that the measurement accuracy is guaranteed; the portable extensometer clamping device is non-slip and has no harm on the extensometer.

Description

Portable extensometer clamping device
Technical field
The utility model relates to the measuring appliance auxiliary holding device, particularly a kind of portable extensometer clamping device.
Background technology
Extensometer is the important survey instrument commonly used that metal material mechanics detects, and in tension test, in order to record the tensile strain of material accurately, extensometer is essential.In daily detection, two terminal knife edge contacts of extensometer need closely clamp with specimen, method commonly used is to use bungee or uses the little spring hook, respectively in two blade contacts winding clampings up and down, major defect has four: the one, and troublesome poeration, must catch extensometer by a hand, the another hand twines bungee or little spring hook; The 2nd, poor to neutrality, two blade contacts clamp respectively up and down, are difficult to make the axis of extensometer and sample to be consistent, and are easy to generate angle, influence measuring accuracy; The 3rd, to skid easily, the strength of bungee and little spring hook is less, and friction force is little between sample, is very easy to skid, and causes invalidate the test; The 4th, the infringement extensometer when the loading and unloading extensometer, because two ends can not be loaded and unloaded simultaneously up and down, has caused extensometer to be subjected to force unbalance, damages extensometer easily.
Summary of the invention
In view of the problem of above-mentioned prior art situation and existence, a kind of clamping device that is applicable to singlehanded clamping and breaks away from extensometer of the utility model development, i.e. a kind of portable extensometer clamping device.
The utility model for achieving the above object, the technical scheme that adopts is: a kind of portable extensometer clamping device, comprise extensometer, it is characterized in that: also comprise fixed mount, spring, buckle bar, push pedal, connecting link, described fixed mount adopts aluminum alloy material, is made of the framework that is made as one and fixed head; Perpendicular separation is provided with several through holes on the plate face of fixed head, and described buckle bar is L shaped, is provided with one section screw thread at an end of L shaped stock, and the horizontal quarter butt that links to each other with L shaped stock is zigzag.
Through hole and push pedal that the thread end of two described buckle bars passes respectively on the fixed mount fixed head fix, on two buckle bars between push pedal and the fixed head, be with a spring separately, the two ends of spring respectively with corresponding push pedal and the plate face top contact of fixed head, one end and the push pedal of described connecting link fix, the through hole that the other end of connecting link passes on the fixed mount fixed head is connected with nut, one end of described extensometer is fixed in the framework of fixed mount, and two blade contacts of the extensometer other end are towards the horizontal quarter butt zigzag end of buckle bar.
The beneficial effect that the utility model produces is: this device has overcome four big shortcomings of traditional extensometer method of clamping, has following characteristics: the one, and simple to operate, one hand is finished, and extensometer and sample is clamped or disengaging; The 2nd, good to neutrality, two blade contacts clamp simultaneously up and down, have guaranteed that the axis of extensometer and sample is consistent, and have guaranteed measuring accuracy; The 3rd, non-slip, the power of spring has improved the friction force between sample and extensometer blade contact, guarantees non-slip; The 4th, do not damage extensometer, when the loading and unloading extensometer, because load and unload simultaneously at two ends up and down, stress balance does not damage extensometer, the infringement of having avoided bimanualness that extensometer is produced.The 5th, buckle bar Front-end Design engrail can be combined closely with sample, is convenient to the clamping of difformity sample.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of portable extensometer clamping device comprises extensometer 1, also comprises fixed mount 2, spring 3, buckle bar 4, push pedal 5, connecting link 6.Fixed mount 2 adopts aluminum alloy material, is made of the framework 2-1 that is made as one and fixed head 2-2; Perpendicular separation is provided with several through holes on the plate face of fixed head 2-2, and buckle bar 4 is L shaped, is provided with one section screw thread at an end of L shaped stock, and the horizontal quarter butt that links to each other with L shaped stock is zigzag 4-1.Fixed mount 2 adopts aluminum alloy material, is made of the framework 2-1 that is made as one and fixed head 2-2, and perpendicular separation is provided with several through holes on the plate face of fixed head 2-2, and present embodiment is three through holes.Buckle bar 4 is L shaped, is provided with one section screw thread at an end of L shaped stock, and the horizontal quarter butt that links to each other with L shaped stock is zigzag 4-1.
Two springs 3 are placed between the fixed head 2-2 of push pedal 5 and fixed mount 2, the thread end of two buckle bars 4 is passed successively the last lower through-hole of fixed mount 2 fixed head 2-2 respectively, spring 3, be fixed together by being arranged on two inside and outside nuts of push pedal 5 and push pedal 5 separately, the two ends of two springs 3 respectively with corresponding push pedal 5 and the plate face top contact of fixed head 2-2, one end of connecting link 6 is fixed by being arranged on two inside and outside nuts of push pedal 5 and push pedal 5, the through hole nut outer with being arranged on fixed head 2-2 that the other end of connecting link 6 is passed in the middle of the fixed mount 2 fixed head 2-2 is spirally connected, one end of extensometer 1 is fixed in the framework 2-1 of fixed mount 2, and two blade contact 1-1 of its extensometer 1 other end are towards the horizontal quarter butt zigzag 4-1 end of buckle bar 4.
The using method step is as follows: sample 7 two ends are clamped on the hydraulic chuck 8 of cupping machine; One hand is held portable extensometer clamping device, catch fixed head 2-2 with right hand forefinger middle finger, promote push pedal 5 with hand thumb or palm, then spring 3 compressions, two buckle bar 4 elongations, the zigzag 4-1 end of two buckle bars 4 forms the gap with two blade contact 1-1 of extensometer 1 and inserts on the sample 7; Unclamp push pedal 5, then spring 3 elongations, two buckle bar 4 retractions, the zigzag 4-1 end of two buckle bars 4 promotes the one side of sample 7, and the another side of sample 7 is closely contacted with the tactile 1-1 of two blades of extensometer 1, guarantees that sample 7 clampings are firm, non-slip; Start cupping machine, sample 7 is axially elongation under the cupping machine effect, 1 two blade contacts of extensometer 1-1 contacts with sample 7 and experiences the elongation of sample 7 in two blade contact 1-1 spacings, make flexible member produce strain by deformed rod, foil gauge is converted into resistance change, is converted to voltage signal demonstration test record through measuring amplifying circuit again; After test is finished, catch fixed head 2-2 with right hand forefinger middle finger, promote push pedal 5 with hand thumb or palm, then spring 3 compressions, 4 elongations of buckle bar, the zigzag 4-1 end of two buckle bars 4 forms the gap with two blade contact 1-1 of extensometer 1, and mobile portable extensometer clamping device makes sample 7 easily break away from extensometer 1 and buckle bar 4.
Portable extensometer clamping device selects for use the light aluminum alloy material to make stationary installation.Designed two better rigidity steel wire buckle bars, the buckle rod end has designed broached-tooth design, can combine closely with sample.The holding force size comes from the application of high-quality spring, has both accomplished clamping, again can easy manipulation.This device can one-handed performance, holds fixed head and push pedal, makes the spring compression, produces thrust, and the elongation by the buckle bar has been delivered on the sample, and the blade contact of sample and extensometer is broken away from.Otherwise, unclamp push pedal, the spring elongation produces clamping force, makes sample and the tight clamping in extensometer blade contact.

Claims (1)

1. portable extensometer clamping device, comprise extensometer (1), it is characterized in that: also comprise fixed mount (2), spring (3), buckle bar (4), push pedal (5), connecting link (6), described fixed mount (2) adopts aluminum alloy material, is made of the framework that is made as one (2-1) and fixed head (2-2); Perpendicular separation is provided with several through holes on the plate face of fixed head (2-2), and described buckle bar (4) is L shaped, is provided with one section screw thread at an end of L shaped stock, and the horizontal quarter butt that links to each other with L shaped stock is zigzag (4-1); Through hole and push pedal (5) that the thread end of two described buckle bars (4) passes respectively on fixed mount (2) fixed head (2-2) fix, on the two buckle bars (4) between push pedal (5) and the fixed head (2-2), be with a spring (3) separately, the two ends of spring (3) respectively with corresponding push pedal (5) and the plate face top contact of fixed head (2-2), one end of described connecting link (6) and push pedal (5) fix, the through hole that the other end of connecting link (6) passes on fixed mount (2) fixed head (2-2) is connected with nut, one end of described extensometer (1) is fixed in the framework (2-1) of fixed mount (2), and two blade contacts (1-1) of extensometer (1) other end are towards horizontal quarter butt zigzag (4-1) end of buckle bar (4).
CN 201320231113 2013-04-28 2013-04-28 Portable extensometer clamping device Active CN203224402U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320231113 CN203224402U (en) 2013-04-28 2013-04-28 Portable extensometer clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320231113 CN203224402U (en) 2013-04-28 2013-04-28 Portable extensometer clamping device

Publications (1)

Publication Number Publication Date
CN203224402U true CN203224402U (en) 2013-10-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320231113 Active CN203224402U (en) 2013-04-28 2013-04-28 Portable extensometer clamping device

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CN (1) CN203224402U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105865908A (en) * 2016-05-19 2016-08-17 西南科技大学 Electronic extensometer for detecting widths of cracks of non-metal ore and concrete
CN108956281A (en) * 2018-06-04 2018-12-07 中国航发北京航空材料研究院 A kind of fixation device of sheet metal drawing by high temperature extensometer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105865908A (en) * 2016-05-19 2016-08-17 西南科技大学 Electronic extensometer for detecting widths of cracks of non-metal ore and concrete
CN108956281A (en) * 2018-06-04 2018-12-07 中国航发北京航空材料研究院 A kind of fixation device of sheet metal drawing by high temperature extensometer
CN108956281B (en) * 2018-06-04 2021-02-09 中国航发北京航空材料研究院 Fixing device of sheet metal high temperature tensile extensometer

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