CN102706748A - Method and device capable of increasing effective working space of tensile testing machine - Google Patents
Method and device capable of increasing effective working space of tensile testing machine Download PDFInfo
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- CN102706748A CN102706748A CN2012101995770A CN201210199577A CN102706748A CN 102706748 A CN102706748 A CN 102706748A CN 2012101995770 A CN2012101995770 A CN 2012101995770A CN 201210199577 A CN201210199577 A CN 201210199577A CN 102706748 A CN102706748 A CN 102706748A
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Abstract
The invention discloses a method and a device capable of increasing effective working space of a tensile testing machine. The device comprises a first-order counter-force frame cross beam, a second-order counter-force frame vertical column, a second-order counter-force frame cross beam, a hoop, a bolt and an anchoring tool which are matched with a vertical column of the testing machine. After the original testing machine cross beam is replaced by the first-order counter-force frame cross beam, and a test sample is anchored on the top of the cross beam, the space of the testing machine can be increased by about 300mm; and if the second-order counter-force cross beam is provided, the effective space of the testing machine can be increased by more than 1m. By the method and the device, the effective space of the testing machine can be substantially increased, and the anchoring performance of rib materials and concrete can be tested.
Description
Technical field
The present invention relates to a kind of stretching test method and equipment, especially is that a kind of can the stretching with the less drawing machine of stroke exceeds the method and the device of its limit of stretch length, specifically a kind of method and device that increases the cupping machine effective working space.
Background technology
At present, for obtaining the mechanical property of construction material, often need carry out mechanical property test to material by testing equipment.About cupping machine, the equipment of a lot of models is all arranged both at home and abroad, the product of different model, testing machine general frame structure all is similarly, forms with the loading power section by carrying reaction frame.And mostly Erichsen test is to carry out to standard sample, so the carrying reaction frame space of testing machine is main to satisfy the standard sample size, is no more than 1 meter usually.
But along with the continuous appearance of new material, perhaps the singularity of practical applications and complicacy need be carried out anchoring or stretching bearing test to some non-standard samples usually, and for non-standard test, existing pressure testing machine equipment often can't satisfy request for utilization.And customize the expense that testing machine equipment will produce wholesale again to non-standard sample, therefore can on existing equipment, transform.
Summary of the invention
The objective of the invention is to satisfy the sample requirement that exceeds its limiting length, and purchase the problem that new testing equipment can cause the cost increase and the wasting of resources again, invent a kind of method and apparatus that can enlarge its test length to existing cupping machine.
One of technical scheme of the present invention is:
A kind of method that increases the cupping machine effective working space is characterized in that it may further comprise the steps:
At first, the reaction frame crossbeam of original cupping machine is dismantled;
Secondly; Single order reaction frame crossbeam is installed on original testing machine column is replaced original anti-frame crossbeam that adds, the column of testing machine is passed the leghole on the single order reaction frame crossbeam, clip is installed; With single order reaction frame crossbeam stationkeeping; Simultaneously come the clamping sample by ground tackle, anchorage point is at the top of single order counter-force crossbeam, thereby makes the effective working space of cupping machine on the former basis that has living space, increase a height that is equivalent to single order reaction frame height; Described single order reaction frame crossbeam is made up of last lower wing plate and the web between last lower wing plate, and last lower wing plate corresponding position is provided with the through hole that supplies drawing machine column and sample to pass;
The 3rd; If behind the original crossbeam of single order reaction frame crossbeam replacement testing machine; The useful space of testing machine still can't satisfy the requirement of specimen length; Then need on single order reaction frame crossbeam, to be provided with second order reaction frame column mounting hole; The lower end of second order reaction frame column is inserted in the described second order reaction frame column mounting hole and located with second order reaction frame lower catch hoop; Second order reaction frame crossbeam is installed in the upper end of second order reaction frame column then and with second order reaction frame front band second order reaction frame crossbeam is positioned on the second order reaction frame column, sample is strained on the top of second order reaction frame crossbeam with ground tackle after sample is passed single order reaction frame crossbeam and second order reaction frame crossbeam, described second order reaction frame crossbeam is made up of lower wing plate on the second order and second order web; The second order web is on the second order between the lower wing plate, and the lower wing plate corresponding position is provided with the through hole that supplies sample and second order reaction frame column to pass on the second order.
Described second order reaction frame column is provided with a plurality of draw-in grooves that are used to install second order reaction frame front band, to adapt to the height of various sample.
Two of technical scheme of the present invention is:
A kind of device that increases the cupping machine effective working space; It comprises single order reaction frame crossbeam 1 and the clip 2 and ground tackle 3 of the reaction frame crossbeam that is used for replacing original cupping machine; It is characterized in that described single order reaction frame crossbeam 1 is made up of upper flange 101, lower wing plate 102 and passive web 103; Web 103 is between upper flange 101 and lower wing plate 102; Offer confession sample sample aperture of passing through 104 and the leghole 105 that supplies the cupping machine column to pass at upper flange 101 with lower wing plate 102 relative position places; Described clip 2 is installed on the column 4 of cupping machine preventing that single order reaction frame crossbeam 1 from gliding, and described ground tackle 3 is fixed on the upper end of sample 5 and offsets with the surface of upper flange 101.
Described upper flange 101 is provided with the second order reaction frame column mounting hole 106 that second order reaction frame column is installed.
Three of technical scheme of the present invention is:
A kind of device that increases the cupping machine effective working space; Which comprises at least a single order reaction frame crossbeam 1 and at least one second order reaction frame crossbeam 6 that is used for replacing the reaction frame crossbeam of original cupping machine; It is characterized in that described single order reaction frame crossbeam 1 is sleeved on the cupping machine column 4 also with the clip that can prevent its downslide 2 realization axial location; Described second order reaction frame crossbeam 6 is sleeved on the upper end of second order reaction frame column 7; On second order reaction frame column 7, be installed with and prevent that 6 downslides of second order reaction frame crossbeam from realizing the second order reaction frame front band 8 of axial location; The lower end of second order reaction frame column 7 is installed on the single order reaction frame crossbeam 1 and with second order reaction frame lower catch hoop 9 location, it is fixing through ground tackle 3 with second order reaction frame crossbeam 6 backs that single order reaction frame crossbeam 1 is passed in the upper end of described sample 5; Described single order reaction frame 1 is made up of upper flange 101, lower wing plate 102 and passive web 103; Web 103 offers the sample aperture 104 that supplies sample to pass through, the leghole 105 that confession cupping machine column passes and the second order reaction frame leghole 106 that supplies second order reaction frame column 7 plug-in mountings at upper flange 101 with lower wing plate 102 relative position places between upper flange 101 and lower wing plate 102; Described second order reaction frame crossbeam 6 is made up of second order upper flange 601, second order lower wing plate 602 and passive second order web 603; Second order web 603 offers confession sample second order sample aperture of passing through 604 and the second order leghole 605 that supplies second order reaction frame column 7 to pass at second order upper flange 601 with second order lower wing plate 602 relative position places between second order upper flange 601 and second order lower wing plate 602.
Also be provided with the three rank reaction frame column mounting holes that supply three rank reaction frame columns to pass on the described second order upper flange 601.
At least be provided with two draw-in grooves 10 that match with second order reaction frame front band 8 that be used to adjust second order reaction frame setting height(from bottom) on the described second order reaction frame column 7.
Beneficial effect of the present invention:
The present invention can replace the reaction frame crossbeam of original cupping machine, thereby increases substantially effective usage space of original testing machine, has improved the usable range of testing machine equipment greatly.
The present invention has simple, the easy to operate advantage of device.
The present invention can practice thrift experimentation cost, reduces the wasting of resources.
Description of drawings
Fig. 1 is the structural representation of this existing cupping machine.
Fig. 2 is the structural representation of single order reaction frame crossbeam of the present invention.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the vertical view of Fig. 2.
Fig. 5 is the structural representation that the cupping machine of single order reaction frame crossbeam of the present invention has been installed.
Fig. 6 utilizes single order reaction frame of the present invention to carry out the synoptic diagram of muscle material and concrete anchoring test synoptic diagram, directly utilizes concrete 11 to replace ground tackle 3 during test.
Fig. 7 is the structural representation of second order reaction frame of the present invention.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is the vertical view of Fig. 7.
Figure 10 is the structural representation that the cupping machine of single order reaction frame crossbeam of the present invention and second order reaction frame crossbeam has been installed.
Figure 11 is the structural representation of second order reaction frame column of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment one.
A kind of method that increases the cupping machine effective working space:
At first, with the reaction frame crossbeam dismounting of original testing machine, because testing machine crossbeam weight is bigger; For easy to operate; Can center on the testing machine scaffolding, hoist is installed, can dismantle installation very easily with the included each several part of the present invention on testing machine top.
Secondly, single order reaction frame crossbeam of the present invention is installed, the column of testing machine is passed the leghole on the single order reaction frame crossbeam, clip is installed, single order reaction frame crossbeam stationkeeping.Because single order counter-force crossbeam comes the clamping sample by ground tackle; Anchorage point is in the top (see figure 5) of single order counter-force crossbeam; And the clamping sample position of the original reaction frame crossbeam of testing machine in the crossbeam bottom (see figure 1), comparison diagram 1 can find out that with Fig. 5 this moment, the effective working space of testing machine increased a length; This length is the height of single order reaction frame crossbeam, about 200-300mm.Fig. 6 is an example of carrying out muscle material and the test of concrete anchoring property by single order reaction frame crossbeam.
The 3rd; If behind the original crossbeam of single order reaction frame crossbeam replacement testing machine; The useful space of testing machine still can't satisfy the requirement of specimen length, can on the basis of single order reaction frame crossbeam, erect second order reaction frame column; Second order reaction frame crossbeam is installed on second order reaction frame column then and is used the clip fixed position, shown in figure 10.As can beappreciated from fig. 10, behind the increase second order reaction frame, the useful space of testing machine can increase substantially.
The 4th; Clip (can adopt standard component) the fixedly mode of reaction frame is that hoop sleeve at column draw-in groove place, is twisted into integral body with bolt with clip and reaction frame crossbeam; Because the external diameter of clip greater than the leghole of reaction frame crossbeam, therefore can limit moving of reaction frame crossbeam.
Single order reaction frame crossbeam wherein is by two flange plates (Fig. 2) and four blocks of webs (Fig. 3) are welded up and down; Guarantee that the rigidity of single order reaction frame crossbeam is not less than the rigidity of the original crossbeam of testing machine, flange plate respectively has three types of circular holes of concentric co-axial about the single order reaction frame crossbeam.The first kind, its position, aperture and quantity, adaptive with the column of testing machine, be used to pass the column of testing machine; Second type, comprise 4 circular holes, around flange plate centre of form symmetric arrangement, suitable with described second order reaction frame column; The 3rd type, comprise 1 circular hole, be positioned at the flange plate position of form center, the aperture is smaller, is used to pass sample, is also referred to as sample aperture, and is as shown in Figure 4.
Second order reaction frame column comprises 4 duplicate circular shaft columns of shape; Every circular shaft column is processed with a plurality of draw-in groove sections at interval, comprises a plurality of interlude draw-in grooves of regulating height, a draw-in groove of installing clip and the draw-in groove (like Figure 11) that lower catch hoop is installed.
Described second order reaction frame crossbeam; By two flange plates and four blocks of webs are welded up and down; Guarantee that the rigidity of second order reaction frame crossbeam is not less than the rigidity of the original crossbeam of testing machine, flange plate respectively has five circular holes of concentric co-axial about the second order reaction frame crossbeam, and these five circular holes can be classified as 2 types.The first kind comprises 4 circular holes, and four circular holes are identical on its pore size and the single order reaction frame crossbeam, and are suitable with second order reaction frame column; Second type, comprise 1 circular hole, be positioned at the flange plate position of form center, the aperture is smaller, is used to pass sample, is also referred to as sample aperture.
Described clip; It is shaped as an annulus and cuts into two halves; The internal diameter of annulus and described second order reaction frame column upper groove coincide; The external diameter of annulus is greater than the diameter of four circular holes on described second order reaction frame column external diameter and the reaction frame crossbeam, is used to limit and the fixing position of second order reaction frame crossbeam.Described bolt with the supporting use of clip, can be screwed in clip on the second order reaction frame crossbeam, clip is combined into whole circular.
Described ground tackle is used for the sample aperture anchoring sample on single order reaction frame crossbeam or second order reaction frame crossbeam.
Embodiment two.
Shown in Fig. 2-5.
A kind of device that increases the cupping machine effective working space; It comprises single order reaction frame crossbeam 1 and the clip 2 and ground tackle 3 of the reaction frame crossbeam that is used for replacing original cupping machine; As shown in Figure 5, described single order reaction frame crossbeam 1 is made up of upper flange 101, lower wing plate 102 and passive web 103, like Fig. 2, shown in 3; Web 103 is between upper flange 101 and lower wing plate 102; Offer with lower wing plate 102 relative position places at upper flange 101 and to supply sample sample aperture of passing through 104 and the leghole 105 that supplies the cupping machine column to pass, as shown in Figure 4, described clip 2 is installed on the column 4 of cupping machine to prevent that single order reaction frame crossbeam 1 from gliding; Described ground tackle 3 is fixed on the upper end of sample 5 and offsets with the surface of upper flange 101, and is as shown in Figure 5.In order to adapt to the requirement that second order reaction frame crossbeam is installed, preferably on described upper flange 101, be provided with the second order reaction frame column mounting hole 106 that second order reaction frame column is installed during practical implementation.
According to the difference of sample, ground tackle can replace with other equivalent unit, and is as shown in Figure 6 during practical implementation, utilizes concrete to replace ground tackle to carry out the fixing of sample.
Embodiment three.
Like Fig. 2,3,4,7,8,9,10, shown in 11.
A kind of device that increases the cupping machine effective working space; Which comprises at least a single order reaction frame crossbeam 1 and at least one second order reaction frame crossbeam 6 that is used for replacing the reaction frame crossbeam of original cupping machine; Shown in figure 10; Described single order reaction frame crossbeam 1 is sleeved on the cupping machine column 4 and with the clip that can prevent its downslide 2 and realizes axial location; Described second order reaction frame crossbeam 6 is sleeved on the upper end of second order reaction frame column 7; On second order reaction frame column 7, be installed with and prevent that 6 downslides of second order reaction frame crossbeam from realizing the second order reaction frame front band 8 of axial location, the lower end of second order reaction frame column 7 is installed on the single order reaction frame crossbeam 1 and also locatees with second order reaction frame lower catch hoop 9, and the upper end of described sample 5 is fixed through ground tackle 3 after passing single order reaction frame crossbeam 1 and second order reaction frame crossbeam 6; Described single order reaction frame 1 is shown in Fig. 2-4; It is made up of upper flange 101, lower wing plate 102 and passive web 103; Web 103 offers the sample aperture 104 that supplies sample to pass through, the leghole 105 that confession cupping machine column passes and the second order reaction frame leghole 106 that supplies second order reaction frame column 7 plug-in mountings at upper flange 101 with lower wing plate 102 relative position places between upper flange 101 and lower wing plate 102.Described second order reaction frame crossbeam 6 is shown in Fig. 7-9; It is made up of second order upper flange 601, second order lower wing plate 602 and passive second order web 603; Second order web 603 offers confession sample second order sample aperture of passing through 604 and the second order leghole 605 that supplies second order reaction frame column to pass at second order upper flange 601 with second order lower wing plate 602 relative position places between second order upper flange 601 and second order lower wing plate 602.In order to adapt to the requirement in further expansion tension test space; Proof strength; The height of second order reaction frame column can not be too high, possibly also need set up three rank reaction frame crossbeams, therefore for this reason; The three rank reaction frame column mounting holes that three rank reaction frame columns pass also should be set, by that analogy during practical implementation on described second order upper flange 601.At least be provided with two draw-in grooves 10 that match with second order reaction frame front band 8 that be used to adjust second order reaction frame setting height(from bottom) on the described second order reaction frame column 7.For the testing requirements of the sample that adapts to differing heights, second order reaction frame column 7 can be processed with a plurality of draw-in groove sections at interval, comprises a plurality of interlude draw-in grooves 10 of regulating height, a draw-in groove and the draw-in groove (like Figure 11) that lower catch hoop 9 is installed of installing clip 8.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (7)
1. method that increases the cupping machine effective working space is characterized in that it may further comprise the steps:
At first, the reaction frame crossbeam of original cupping machine is dismantled;
Secondly; Single order reaction frame crossbeam is installed on original testing machine column is replaced original anti-frame crossbeam that adds, the column of testing machine is passed the leghole on the single order reaction frame crossbeam, clip is installed; With single order reaction frame crossbeam stationkeeping; Simultaneously come the clamping sample by ground tackle, anchorage point is at the top of single order counter-force crossbeam, thereby makes the effective working space of cupping machine on the former basis that has living space, increase a height that is equivalent to single order reaction frame height; Described single order reaction frame crossbeam is made up of last lower wing plate and the web between last lower wing plate, and last lower wing plate corresponding position is provided with the through hole that supplies drawing machine column and sample to pass;
The 3rd; If behind the original crossbeam of single order reaction frame crossbeam replacement testing machine; The useful space of testing machine still can't satisfy the requirement of specimen length; Then need on single order reaction frame crossbeam, to be provided with second order reaction frame column mounting hole; The lower end of second order reaction frame column is inserted in the described second order reaction frame column mounting hole and located with second order reaction frame lower catch hoop; Second order reaction frame crossbeam is installed in the upper end of second order reaction frame column then and with second order reaction frame front band second order reaction frame crossbeam is positioned on the second order reaction frame column, sample is strained on the top of second order reaction frame crossbeam with ground tackle after sample is passed single order reaction frame crossbeam and second order reaction frame crossbeam, described second order reaction frame crossbeam is made up of lower wing plate on the second order and second order web; The second order web is on the second order between the lower wing plate, and the lower wing plate corresponding position is provided with the through hole that supplies sample and second order reaction frame column to pass on the second order.
2. the method for increase cupping machine effective working space according to claim 1 is characterized in that described two reaction frame columns are provided with a plurality of draw-in grooves that are used to install second order reaction frame front band, to adapt to the height of various sample.
3. device that increases the cupping machine effective working space; It comprises single order reaction frame crossbeam (1) and the clip (2) and the ground tackle (3) of the reaction frame crossbeam that is used for replacing original cupping machine; It is characterized in that described single order reaction frame crossbeam (1) is made up of upper flange (101), lower wing plate (102) and passive web (103); Web (103) is positioned between upper flange (101) and the lower wing plate (102); Offer the leghole (105) that supplies sample aperture (104) that sample passes through and confession cupping machine column to pass at upper flange (101) and lower wing plate (102) relative position place; The column (4) that described clip (2) is installed on cupping machine is gone up preventing that single order reaction frame crossbeam (1) from gliding, and described ground tackle (3) is fixed on the upper end of sample (5) and offsets with the surface of upper flange (101).
4. the device of increase cupping machine effective working space according to claim 3 is characterized in that described upper flange (101) is provided with the second order reaction frame column mounting hole (106) that second order reaction frame column is installed.
5. device that increases the cupping machine effective working space; Which comprises at least single order reaction frame crossbeam (1) and at least one a second order reaction frame crossbeam (6) that is used for replacing the reaction frame crossbeam of original cupping machine; It is characterized in that described single order reaction frame crossbeam (1) is sleeved on cupping machine column (4) and upward and with the clip that can prevent its downslide (2) realizes axial location; Described second order reaction frame crossbeam (6) is sleeved on the upper end of second order reaction frame column (7); On second order reaction frame column (7), be installed with and prevent that second order reaction frame crossbeam (6) downslide from realizing the second order reaction frame front band (8) of axial location; The lower end of second order reaction frame column (7) is installed in single order reaction frame crossbeam (1) and goes up and locate with second order reaction frame lower catch hoop (9), and the upper end of described sample (5) passes single order reaction frame crossbeam (1) and second order reaction frame crossbeam (6) back is fixing through ground tackle (3); Described single order reaction frame (1) is made up of upper flange (101), lower wing plate (102) and passive web (103); Web (103) is positioned between upper flange (101) and the lower wing plate (102), offers the sample aperture (104) that supplies sample to pass through, the leghole (105) that confession cupping machine column passes and the second order reaction frame leghole (106) that supplies second order reaction frame column (7) plug-in mounting at upper flange (101) and lower wing plate (102) relative position place; Described second order reaction frame crossbeam (6) is made up of second order upper flange (601), second order lower wing plate (602) and passive second order web (603); Second order web (603) is positioned between second order upper flange (601) and the second order lower wing plate (602), offers the second order leghole (605) that supplies second order sample aperture (604) that sample passes through and confession second order reaction frame column (7) to pass at second order upper flange (601) and second order lower wing plate (602) relative position place.
6. the device of increase cupping machine effective working space according to claim 5 is characterized in that also being provided with on the described second order upper flange (601) the three rank reaction frame column mounting holes that supply three rank reaction frame columns to pass.
7. the device of increase cupping machine effective working space according to claim 5 is characterized in that being provided with at least on the described second order reaction frame column (7) two draw-in grooves (10) that match with second order reaction frame front band (8) that be used to adjust second order reaction frame setting height(from bottom).
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| CN201210199577.0A CN102706748B (en) | 2012-06-18 | 2012-06-18 | Method and device capable of increasing effective working space of tensile testing machine |
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| CN201210199577.0A CN102706748B (en) | 2012-06-18 | 2012-06-18 | Method and device capable of increasing effective working space of tensile testing machine |
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| CN102706748B CN102706748B (en) | 2014-08-20 |
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| CN103424254A (en) * | 2013-08-06 | 2013-12-04 | 济南科汇试验设备有限公司 | Tester for mine-used anchor cable assembly performance test |
| CN106017892A (en) * | 2016-06-30 | 2016-10-12 | 河南平芝高压开关有限公司 | Spring testing machine |
| CN106092543A (en) * | 2016-06-30 | 2016-11-09 | 河南平芝高压开关有限公司 | Spring testing machine and stretching travel expandable stent thereof |
| CN108362557A (en) * | 2018-05-22 | 2018-08-03 | 上海外高桥造船有限公司 | Tensile test apparatus |
| CN108709807A (en) * | 2018-07-16 | 2018-10-26 | 江苏省特种设备安全监督检验研究院 | Open type route-variable puller system |
| CN108730263A (en) * | 2018-07-16 | 2018-11-02 | 江苏省特种设备安全监督检验研究院 | Pulling force stroke compensating device |
| JP2022027674A (en) * | 2020-08-01 | 2022-02-14 | 濱田 和明 | Tension-compression test fixture |
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| CN202066750U (en) * | 2011-03-23 | 2011-12-07 | 沈阳合兴检测设备有限公司 | Tension and compression performance detection device for building heat insulation material |
| CN102374950A (en) * | 2011-11-16 | 2012-03-14 | 浙江建设职业技术学院 | Test device for service performance of reinforced column under load and environment coupled action |
| CN202631360U (en) * | 2012-06-18 | 2012-12-26 | 金陵科技学院 | Device capable of enlarging effective workspace of tensile testing machine |
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| JP2010151507A (en) * | 2008-12-24 | 2010-07-08 | Koyo Giken:Kk | Tensile testing machine |
| CN201653803U (en) * | 2010-03-30 | 2010-11-24 | 深圳大友钢铁有限公司 | Metal material elongation tester |
| CN202066750U (en) * | 2011-03-23 | 2011-12-07 | 沈阳合兴检测设备有限公司 | Tension and compression performance detection device for building heat insulation material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424254A (en) * | 2013-08-06 | 2013-12-04 | 济南科汇试验设备有限公司 | Tester for mine-used anchor cable assembly performance test |
| CN106017892A (en) * | 2016-06-30 | 2016-10-12 | 河南平芝高压开关有限公司 | Spring testing machine |
| CN106092543A (en) * | 2016-06-30 | 2016-11-09 | 河南平芝高压开关有限公司 | Spring testing machine and stretching travel expandable stent thereof |
| CN108362557A (en) * | 2018-05-22 | 2018-08-03 | 上海外高桥造船有限公司 | Tensile test apparatus |
| CN108709807A (en) * | 2018-07-16 | 2018-10-26 | 江苏省特种设备安全监督检验研究院 | Open type route-variable puller system |
| CN108730263A (en) * | 2018-07-16 | 2018-11-02 | 江苏省特种设备安全监督检验研究院 | Pulling force stroke compensating device |
| CN108709807B (en) * | 2018-07-16 | 2023-10-10 | 江苏省特种设备安全监督检验研究院 | Open type variable stroke pulling machine |
| JP2022027674A (en) * | 2020-08-01 | 2022-02-14 | 濱田 和明 | Tension-compression test fixture |
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|---|---|
| CN102706748B (en) | 2014-08-20 |
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