CN105158068A - Displacement measurement device for tensile test - Google Patents

Displacement measurement device for tensile test Download PDF

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Publication number
CN105158068A
CN105158068A CN201510280741.4A CN201510280741A CN105158068A CN 105158068 A CN105158068 A CN 105158068A CN 201510280741 A CN201510280741 A CN 201510280741A CN 105158068 A CN105158068 A CN 105158068A
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China
Prior art keywords
link
hole
sounding rod
extensometer
tube
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CN201510280741.4A
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Chinese (zh)
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CN105158068B (en
Inventor
唐池文
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Chengdu Jiweilian Group Co., Ltd.
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Pangang Group Chengdu Steel & Vanadium Co Ltd
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Priority to CN201510280741.4A priority Critical patent/CN105158068B/en
Publication of CN105158068A publication Critical patent/CN105158068A/en
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Publication of CN105158068B publication Critical patent/CN105158068B/en
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Abstract

The invention discloses a displacement measurement device for a tensile test. The displacement measurement device comprises an upper cross bar, a stand column and a lower cross bar. One end of the lower cross bar is connected to the stand column and the other end of the lower cross bar is connected to a lower measurement rod. A support frame is provided with a first connection end, a second connection end and a third connection end. The upper end of a guide pipe is connected to the first connection end. The upper edge of the second connection end is provided with a second through hole along a vertical direction. An upper measurement rod goes through the second through hole and the lower end of the upper measurement rod presses against the lower measurement rod. A gap is formed between the upper measurement rod and the second through hole. A limiting part is arranged on the upper measurement rod and is located above the second connection end. The shortest distance between the limiting part and the second connection end is less than or equal to a measuring range of an installed extensometer. The third connection end is connected to the upper cross bar. The upper cross bar and the lower cross bar are arranged along a horizontal direction. The stand column, the guide pipe, the upper measurement rod and the lower measurement rod are arranged along a vertical direction. The displacement measurement device protects an extensometer, reduces labor intensity of an operator, improves production test efficiency and reduces a cost.

Description

For the displacement measuring device of tension test
Technical field
The present invention relates to a kind of equipment of high temperature tension test, particularly relate to a kind of displacement measuring device protecting extensometer.
Background technology
Universal testing machine integrates the Material Testing Machine of the functions such as stretching, bending, compression, shearing, is mainly used in metal, nonmetallic materials mechanical property test.
Universal testing machine in the tension test carrying out metal material, nonmetallic materials, when normal temperature tension test, because extensometer directly on the stretching position of sample, thus can obtain regulation disproportional length growth rate stress value by clamping.And when high temperature tension test, by the restriction of high temperature and high-temperature burner hearth, extensometer can not directly clamping on the stretching position of sample, as shown in Figure 1, the crossbeam 1 of mobile terminal is provided with traversing carriage 3, the tester base 2 of stiff end is provided with fixed support 4, traversing carriage 3 and fixed support 4 form the displacement measuring device 6 installing extensometer, when high temperature tension test, extensometer 7 is arranged on displacement measuring device 6, namely a gage beam clamping of extensometer 7 is on traversing carriage 3, another gage beam clamping is on fixed support 4, crossbeam 1 is provided with the upper fixture 8 stretching into high-temperature burner hearth, tester base 2 is provided with the lower clamp 9 stretching into high-temperature burner hearth, sample 5 one end being positioned at high-temperature burner hearth is connected with upper fixture 8, the other end is connected with lower clamp 9, when sample 5 is stretched, upper fixture 8, lower clamp 9 is all combined closely with sample 5, displacement is transmitted to extensometer 7 by traversing carriage 3 and fixed support 4, thus obtain elongation parameter, in process of the test, need laboratory technician's energy high concentration: often do a high temperature tension test, observe the stress strain curve on computer display screen constantly, after yield point occurs, take off extensometer immediately.
The displacement measuring device 6 of the installation extensometer shown in Fig. 1, extend parameter although can be used for measuring and calculate disproportional length growth rate, but, once the slow motion of extensometer is got in misoperation when testing, probably extensometer is just caused to transfinite, extensometer precision is affected, extensometer when serious, can be caused to scrap.Such as: 1. in the process of doing experiment, because some material fragility degree is higher, during as tension test, just yield point occurs, sample 5 has just been pulled off, now, extensometer 7 is also arranged on displacement measuring device 6, under the effect of inertia, moving beam 1 accelerated motion of testing machine, the distance of movement is beyond the range of extensometer 7, and cause extensometer 7 outrange (range of extensometer is 10mm), after extensometer outrange, precision will be affected; When 2. testing, if laboratory technician's is absent minded, complete in test parameters and to have forgotten when sample is pulled off and get extensometer 7, extensometer can be caused in this case to scrap, and generally need 3 ~ 40,000 yuans/1 from the extensometer of external import, therefore, pilot production cost is high, test rate is very low, the production testing work of inadaptable batch far away.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of displacement measuring device for tension test; not only can protect extensometer, extend the serviceable life of extensometer, and the labour intensity of operator can be reduced; improve pilot production efficiency, reduce pilot production cost.
The present invention solves the displacement measuring device for tension test that its technical matters adopts, and comprises cross tube, column, sheer pole, scaffold, guide pipe, upper sounding rod, lower sounding rod and locating part, one end of described sheer pole is connected with described column, and the other end of described sheer pole is connected with described lower sounding rod, described scaffold has the first link, second link and the 3rd link, the upper end of described guide pipe is connected with described first link, described second link is vertically provided with the second through hole, described upper sounding rod through described second through hole and lower end abutment on described lower sounding rod, gap is there is between described upper sounding rod and described second through hole, described locating part to be arranged on described upper sounding rod and to be positioned at the top of described second link, the range of the extensometer of the bee-line between described locating part and described second link≤install, described 3rd link is connected with described cross tube, described cross tube and sheer pole are arranged in the horizontal direction, and described column, guide pipe, upper sounding rod and lower sounding rod are vertically arranged.
Further, also comprise Compress Spring, described Compress Spring one end is connected with the lower end of guide pipe, and the described Compress Spring other end is connected with the upper end of described upper sounding rod.
Further, described lower sounding rod is connected with sheer pole by the first vertical position regulating device.
Further, described vertical position regulating device comprises the 3rd clamping screw, described sheer pole is vertically provided with the first through hole, described lower sounding rod is through described first through hole, described 3rd clamping screw is arranged on sheer pole, and one end of described 3rd clamping screw extends to, and described first through hole is interior locks lower sounding rod.
Further, the 3rd link of described scaffold is connected with described cross tube by the second vertical position regulating device.
Further, described second vertical position regulating device comprises connecting link and the second clamping screw, described 3rd link is vertically provided with third through-hole, the upper end of described connecting link is connected with described cross tube, the lower end of described connecting link is through described third through-hole, described second clamping screw is arranged on the 3rd link, and one end of described second clamping screw extends to, and described third through-hole is interior locks connecting link.
Further, described cross tube offers connecting through hole, the upper end of described connecting link is through described connecting through hole, and the one end being arranged on the first clamping screw on cross tube extends in described connecting through hole locks connecting link.
The invention has the beneficial effects as follows: when using the displacement measuring device for tension test of the present invention, cross tube is arranged on the moving beam of testing machine, column is arranged in tester base; By one of them gage beam clamping of extensometer on guide pipe, preferred clamping is at the middle part of guide pipe, and another gage beam clamping is on upper sounding rod and be positioned at above locating part, makes the two measuring arm displacement of extensometer substantially in zero-bit.The moving beam of testing machine is provided with the upper fixture stretching into high-temperature burner hearth, tester base is provided with the lower clamp stretching into high-temperature burner hearth, the sample one end being positioned at high-temperature burner hearth is connected with upper fixture, the other end is connected with lower clamp, in tension test process, upper fixture, lower clamp are all combined closely with sample, in tension test process, moving beam drives scaffold to move, and because the upper end of guide pipe is connected with the first link of scaffold, when moving beam drives scaffold to move, the gage beam of clamping on guide pipe is followed scaffold and moved, again because upper sounding rod exists gap upper sounding rod and the second through hole through the second through hole be arranged on the second link, therefore, during bee-line between distance≤locating part that moving beam moves up and the second link, clamping on upper sounding rod and the gage beam be positioned at above locating part do not move with scaffold, during bee-line between the distance > locating part that moving beam moves up and the second link, the drive locating part be arranged on upper sounding rod moves up by the second link of scaffold, thus take to clamping on upper sounding rod and the gage beam be positioned at above locating part follow scaffold and move, again due to the range of the extensometer of the bee-line between locating part and the second link≤install, therefore, in tension test process, extensometer is no to scale never, even if sample is broken suddenly, also extensometer need not be taken off in time, not only can protect extensometer, extend the serviceable life of extensometer, and the labour intensity of operator can be reduced, improve pilot production efficiency, reduce pilot production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Shown in Fig. 1: crossbeam 1, tester base 2, traversing carriage 3, fixed support 4, sample 5, displacement measuring device 6, extensometer 7, upper fixture 8, lower clamp 9.
Fig. 2 is structural representation of the present invention;
Fig. 3 is the enlarged diagram of part A in Fig. 2;
Fig. 4 is the plan structure schematic diagram of Fig. 3;
Fig. 5 is the left TV structure schematic diagram of Fig. 3;
Fig. 6 is using state structural representation of the present invention;
Shown in Fig. 2 ~ Fig. 6: cross tube 1, column 2, sheer pole 3, first through hole 31, scaffold 4, first link 41, second link 42, second through hole 421, the 3rd link 43, third through-hole 431, guide pipe 5, upper sounding rod 6, lower sounding rod 7, locating part 8, extensometer 9, Compress Spring 10, first clamping screw 11, second clamping screw 12, the 3rd clamping screw 13, connecting link 14, moving beam 15, tester base 16, sample 17, upper fixture 18, lower clamp 19.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figures 2 to 5, the displacement measuring device for tension test of the present invention, comprises cross tube 1, column 2, sheer pole 3, scaffold 4, guide pipe 5, upper sounding rod 6, lower sounding rod 7 and locating part 8, one end of described sheer pole 3 is connected with described column 2, and the other end of described sheer pole 3 is connected with described lower sounding rod 7, described scaffold 4 has the first link 41, second link 42 and the 3rd link 43, the upper end of described guide pipe 5 is connected with described first link 41, described second link 42 is vertically provided with the second through hole 421, described upper sounding rod 6 through described second through hole 421 and lower end abutment on described lower sounding rod 7, gap is there is between described upper sounding rod 6 and described second through hole 421, described locating part 8 to be arranged on described upper sounding rod 6 and to be positioned at the top of described second link 42, the range of the extensometer 9 of the bee-line between described locating part 8 and described second link 42≤install, described 3rd link 43 is connected with described cross tube 1, described cross tube 1 and sheer pole 3 are arranged in the horizontal direction, and described column 2, guide pipe 5, upper sounding rod 6 and lower sounding rod 7 are vertically arranged.
As shown in Figure 6, when using the displacement measuring device for tension test of the present invention, cross tube 1 is arranged on the moving beam 15 of testing machine, column 2 is arranged in tester base 16; By one of them gage beam clamping of extensometer 9 on guide pipe 5, preferred clamping is at the middle part of guide pipe 5, and another gage beam clamping is on upper sounding rod 6 and be positioned at above locating part 8, makes the two measuring arm displacement of extensometer 9 substantially in zero-bit.Wherein, locating part 8 can adopt screw, steel bar, rivet etc.; The range of the extensometer 9 of the bee-line between described locating part 8 and described second link 42≤install, when the range of extensometer 9 is 10mm, then the bee-line between locating part 8 and described second link 42 is generally limited in 9.5mm ~ 10mm.The moving beam 15 of testing machine is provided with the upper fixture 18 stretching into high-temperature burner hearth, tester base 16 is provided with the lower clamp 19 stretching into high-temperature burner hearth, sample 17 one end being positioned at high-temperature burner hearth is connected with upper fixture 18, the other end is connected with lower clamp 19, in tension test process, upper fixture 18, lower clamp 19 are all combined closely with sample 17, in tension test process, moving beam 15 drives scaffold 4 to move, because the upper end of guide pipe 5 is connected with the first link 41 of scaffold 4, when moving beam 15 drives scaffold 4 to move, the gage beam of clamping on guide pipe 5 is followed scaffold 4 and is moved, again because upper sounding rod 6 exists gap through the second through hole 421 be arranged on the second link 42 upper sounding rod 6 and the second through hole 421, therefore, during bee-line between distance≤locating part 8 that moving beam 15 moves up and the second link 42, clamping on upper sounding rod 6 and the gage beam be positioned at above locating part 8 do not move with scaffold 4, during bee-line between the distance > locating part 8 that moving beam 15 moves up and the second link 42, the drive locating part 8 be arranged on upper sounding rod 6 moves up by the second link 42 of scaffold 4, thus take to clamping on upper sounding rod 6 and the gage beam be positioned at above locating part 8 follow scaffold 4 and move, again due to the range of the extensometer 9 of the bee-line between locating part 8 and the second link 42≤install, therefore, in tension test process, extensometer 9 no to scale never, even if sample 17 is broken suddenly, also extensometer need not be taken off in time, not only can protect extensometer, extend the serviceable life of extensometer, and the labour intensity of operator can be reduced, improve pilot production efficiency, reduce pilot production cost.
In order to prevent upper sounding rod 6 from rocking, as preferred embodiment, also comprise Compress Spring 10, described Compress Spring 10 one end is connected with the lower end of guide pipe 5, and described Compress Spring 10 other end is connected with the upper end of described upper sounding rod 6.Like this, during bee-line between distance≤locating part 8 that moving beam 15 moves up and the second link 42, under the pressure effect of Compress Spring 10, upper sounding rod 6 is tightly resisted against on lower sounding rod 7, thus prevents sounding rod 6 from rocking.
In order to adapt to the sample of different size, as preferred embodiment, described lower sounding rod 7 is connected with sheer pole 3 by the first vertical position regulating device.Often test a sample complete after, once descend the position of sounding rod 7 by the first vertical position regulating device adjustment while again sample being installed, make the two measuring arm displacement of extensometer 9 substantially in zero-bit.
Described first vertical position regulating device can be small-scale liquid cylinder pressure or pneumatic cylinder, realizes position adjustment function by hydraulic cylinder or pneumatic cylinder; Also can be the external thread be arranged on lower sounding rod 7 and the internal thread be arranged on sheer pole 3, realize position adjustment function by threaded engagement.As preferred embodiment, described vertical position regulating device comprises the 3rd clamping screw 13, described sheer pole 3 is vertically provided with the first through hole 31, described lower sounding rod 7 is through described first through hole 31, described 3rd clamping screw 13 is arranged on sheer pole 3, and one end of described 3rd clamping screw 13 extends to, and described first through hole 31 is interior locks lower sounding rod 7.When needing the position regulating lower sounding rod 7, turn on the 3rd clamping screw 13, after being adjusted to the right place by lower sounding rod 7, then tightened by the 3rd clamping screw 13, structure is simple, easy to operate.
Described scaffold 4 can be welded on cross tube 1, also can be riveted on cross tube 1.As preferred embodiment, the 3rd link 43 of described scaffold 4 is connected with described cross tube 1 by the second vertical position regulating device.Like this, scaffold 4 can be regulated in the position of vertical direction, also can adapt to the sample of different size.
Described second vertical position regulating device also can be the regulating device such as small-scale liquid cylinder pressure or pneumatic cylinder, as preferred embodiment, described second vertical position regulating device comprises connecting link 14 and the second clamping screw 12, described 3rd link 43 is vertically provided with third through-hole 431, the upper end of described connecting link 14 is connected with described cross tube 1, the lower end of described connecting link 14 is through described third through-hole 431, described second clamping screw 12 is arranged on the 3rd link 43, and one end of described second clamping screw 12 extends to, and described third through-hole 431 is interior locks connecting link 14.When needing the position regulating scaffold 4, turning on the second clamping screw 12, after being adjusted to the right place by scaffold 4, then being tightened by the second clamping screw 12, structure is simple, easy to operate.
The upper end of described connecting link 14 can be connected with cross tube 1 by the mode of threaded engagement or welding, as preferred embodiment, described cross tube 1 offers connecting through hole, the upper end of described connecting link 14 is through described connecting through hole, and the one end being arranged on the first clamping screw 11 on cross tube 1 extends in described connecting through hole locks connecting link 14.Structure is simple, easy to operate.

Claims (7)

1. for the displacement measuring device of tension test, it is characterized in that: comprise cross tube (1), column (2), sheer pole (3), scaffold (4), guide pipe (5), upper sounding rod (6), lower sounding rod (7) and locating part (8), one end of described sheer pole (3) is connected with described column (2), and the other end of described sheer pole (3) is connected with described lower sounding rod (7), described scaffold (4) has the first link (41), second link (42) and the 3rd link (43), the upper end of described guide pipe (5) is connected with described first link (41), described second link (42) is vertically provided with the second through hole (421), described upper sounding rod (6) through described second through hole (421) and lower end abutment on described lower sounding rod (7), gap is there is between described upper sounding rod (6) and described second through hole (421), described locating part (8) is arranged on described upper sounding rod (6) and goes up and the top being positioned at described second link (42), the range of the extensometer (9) of the bee-line between described locating part (8) and described second link (42)≤install, described 3rd link (43) is connected with described cross tube (1), described cross tube (1) and sheer pole (3) are arranged in the horizontal direction, and described column (2), guide pipe (5), upper sounding rod (6) and lower sounding rod (7) are vertically arranged.
2. as claimed in claim 1 for the displacement measuring device of tension test, it is characterized in that: also comprise Compress Spring (10), described Compress Spring (10) one end is connected with the lower end of guide pipe (5), and described Compress Spring (10) other end is connected with the upper end of described upper sounding rod (6).
3., as claimed in claim 1 or 2 for the displacement measuring device of tension test, it is characterized in that: described lower sounding rod (7) is connected with sheer pole (3) by the first vertical position regulating device.
4. as claimed in claim 3 for the displacement measuring device of tension test, it is characterized in that: described vertical position regulating device comprises the 3rd clamping screw (13), described sheer pole (3) is vertically provided with the first through hole (31), described lower sounding rod (7) is through described first through hole (31), described 3rd clamping screw (13) is arranged on sheer pole (3), and one end of described 3rd clamping screw (13) extends to, and described first through hole (31) is interior to be locked lower sounding rod (7).
5., as claimed in claim 1 or 2 for the displacement measuring device of tension test, it is characterized in that: the 3rd link (43) of described scaffold (4) is connected with described cross tube (1) by the second vertical position regulating device.
6. as claimed in claim 5 for the displacement measuring device of tension test, it is characterized in that: described second vertical position regulating device comprises connecting link (14) and the second clamping screw (12), described 3rd link (43) is vertically provided with third through-hole (431), the upper end of described connecting link (14) is connected with described cross tube (1), the lower end of described connecting link (14) is through described third through-hole (431), described second clamping screw (12) is arranged on the 3rd link (43), and one end of described second clamping screw (12) extends to, and described third through-hole (431) is interior locks connecting link (14).
7. as claimed in claim 6 for the displacement measuring device of tension test, it is characterized in that: (1) offers connecting through hole to described cross tube, the upper end of described connecting link (14) is through described connecting through hole, and the one end being arranged on the first clamping screw (11) on cross tube (1) extends in described connecting through hole locks connecting link (14).
CN201510280741.4A 2015-05-28 2015-05-28 Displacement measuring device for tension test Active CN105158068B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486579A (en) * 2015-12-22 2016-04-13 中冶建筑研究总院有限公司 Detection device and detection method for measuring strain generated by sample

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003240690A (en) * 2002-02-15 2003-08-27 Shimadzu Corp Test piece extensometer
CN2816793Y (en) * 2005-09-09 2006-09-13 上海新三思计量仪器制造有限公司 Large-scale distance extensometer
CN203337456U (en) * 2013-06-27 2013-12-11 攀钢集团成都钢钒有限公司 Extensometer type displacement detecting device
CN203455159U (en) * 2013-05-31 2014-02-26 内蒙古包钢钢联股份有限公司 Spring extensometer provided with limiting device
CN203857924U (en) * 2014-04-22 2014-10-01 攀钢集团成都钢钒有限公司 Electronic deformation gauge used for stress ring deformation detection and deformation detection device
CN204128894U (en) * 2014-09-30 2015-01-28 深圳市精创诚科技有限公司 Deformation measuring device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003240690A (en) * 2002-02-15 2003-08-27 Shimadzu Corp Test piece extensometer
CN2816793Y (en) * 2005-09-09 2006-09-13 上海新三思计量仪器制造有限公司 Large-scale distance extensometer
CN203455159U (en) * 2013-05-31 2014-02-26 内蒙古包钢钢联股份有限公司 Spring extensometer provided with limiting device
CN203337456U (en) * 2013-06-27 2013-12-11 攀钢集团成都钢钒有限公司 Extensometer type displacement detecting device
CN203857924U (en) * 2014-04-22 2014-10-01 攀钢集团成都钢钒有限公司 Electronic deformation gauge used for stress ring deformation detection and deformation detection device
CN204128894U (en) * 2014-09-30 2015-01-28 深圳市精创诚科技有限公司 Deformation measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105486579A (en) * 2015-12-22 2016-04-13 中冶建筑研究总院有限公司 Detection device and detection method for measuring strain generated by sample

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Effective date of registration: 20191114

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Patentee before: Pangang Group Chengdu Steel & Vanadium Co., Ltd.

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