CN112304769A - Dynamic tension-shear testing machine - Google Patents
Dynamic tension-shear testing machine Download PDFInfo
- Publication number
- CN112304769A CN112304769A CN202011102748.4A CN202011102748A CN112304769A CN 112304769 A CN112304769 A CN 112304769A CN 202011102748 A CN202011102748 A CN 202011102748A CN 112304769 A CN112304769 A CN 112304769A
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- oil cylinder
- shear
- cross beam
- base
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- 238000012360 testing method Methods 0.000 title claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000010008 shearing Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000007086 side reaction Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000003189 isokinetic effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Abstract
The invention discloses a dynamic tension-shear testing machine which comprises a base, wherein two counter-force frames are fixed at two ends of the base, a cross beam is fixed at the upper ends of the four counter-force frames, a vertical oil cylinder is fixed on the cross beam, the tail end of a piston rod of the vertical oil cylinder penetrates through the cross beam and extends to the lower end of the cross beam, an upper pressing plate is fixed at the tail end of the piston rod of the vertical oil cylinder, fixed blocks are fixed at two ends of the upper pressing plate, and connecting devices are arranged on the two fixed blocks. The invention adopts a host structure with four upright posts and an upper oil cylinder, and four guide vertical plates are arranged on two sides of the host, so that the whole system forms a self-reaction force loading structure, the influence of horizontal shearing force on a vertical load sensor in the test process is avoided, the test space is stepless and adjustable, the test requirements of different heights are facilitated, the rigidity of the whole machine is high, the deformation is small, and the accuracy of measured data is ensured.
Description
Technical Field
The invention relates to the technical field of dynamic tension-shear tests, in particular to a dynamic tension-shear testing machine.
Background
The dynamic tension-shear tester is another testing device different from the dynamic compression-shear tester. The dynamic pressure shear is to apply a shear force horizontally while a positive pressure is applied to the sample to be tested; dynamic pull shear applies a shear force in the horizontal direction while a positive pull force is applied to the sample under test.
However, in the existing dynamic tension-shear test, a sample is subjected to forces in two aspects, so that detection data can be in error, the accuracy of the data is reduced, and in order to meet the requirement that the sample (such as a seismic isolation rubber support) is damaged and detected by shearing force while being stretched, the dynamic tension-shear test equipment is invented according to national standards.
Disclosure of Invention
The invention aims to solve the defect that data is inaccurate due to the fact that a sample is damaged and detected by shearing force while being stretched during the existing detection test.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dynamic tension-shear testing machine comprises a base, wherein two counter-force frames are fixed at two ends of the base, a cross beam is fixed at the upper ends of the four counter-force frames together, a vertical oil cylinder is fixed on the cross beam, the tail end of a piston rod of the vertical oil cylinder penetrates through the cross beam and extends to the lower end of the cross beam, an upper pressing plate is fixed at the tail end of the piston rod of the vertical oil cylinder, fixed blocks are fixed at two ends of the upper pressing plate, connecting devices are arranged on the two fixed blocks, a lateral counter-force steel guide rail is fixed on the side wall of one end of each of the four counter-force frames, a first sliding block is mounted on the lateral counter-force steel guide rail;
the base is fixed with three rolling linear guide, all is fixed with two second sliders on the three rolling linear guide, and the upper end of six second sliders is fixed with the workstation jointly, on the workstation, lower extreme one side of base is equipped with the mobile device, mobile device and workstation correspond the setting.
Preferably, connecting device is including fixing the U template in the one end both sides of fixed block, and the one end of four first sliders all is fixed with the lug, is equipped with the opening that corresponds with U type piece on the lug, and two lugs with one side are a set of, and two lugs and two U type pieces with a set of correspond the setting, U type piece is located to the opening in, all be equipped with two jacks on two lateral walls of opening, be equipped with the through-hole that corresponds with the jack on the U type piece, run through being equipped with first bolt in one of them jack, the lower extreme of first bolt runs through this jack in proper order, two through-holes and another jack and extends to the lower extreme of lug, spiral shell closes on the first bolt and is equipped with the first nut of nut.
Preferably, the mobile device is including fixing the upright beam in base one end, be fixed with horizontal shearing hydro-cylinder and connecting plate on the upright beam, the piston rod end of horizontal shearing hydro-cylinder runs through the connecting plate and extends to one side of connecting plate, the piston rod end-to-end connection of horizontal shearing hydro-cylinder has the shearing sensor, the one end of workstation is fixed with the connecting piece, the shearing sensor passes through on the ball pivot connects the connecting piece.
Preferably, one end of the bump is arranged in an inclined manner, one end of the fixing block is abutted with two wedge blocks, one end of each wedge block and the inclined position of the bump are arranged correspondingly, the two wedge blocks are connected through a second bolt, and a second nut is screwed on the second bolt.
Preferably, four upright posts are fixed at the upper end of the base, and the upper ends of the four upright posts penetrate through and are fixed on the cross beam together.
Preferably, a plurality of limiting grooves are formed in the workbench and the upper pressing plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the upper plunger oil cylinder and the four-upright-column frame type host structure are adopted, the test space is stepless and adjustable, the test requirements of different heights are facilitated, the rigidity of the whole machine is high, the deformation is small, and the measured data is accurate;
2. the base and the cross beam are of an integral casting structure, so that the workpiece is high in rigidity and attractive and elegant in appearance;
3. the oil cylinder is of a single-rod two-way structure, and the final process of an inner hole of the oil cylinder is precisely processed by a honing machine, so that the friction of the piston of the oil cylinder is reduced, the measurement precision of the testing machine is improved, and the service life of the testing machine is prolonged;
in conclusion, the device adopts a host structure with four upright posts and an upper oil cylinder, and four guide vertical plates are arranged on two sides of the host, so that the whole system forms a self-reaction force loading structure, the influence of horizontal shearing force on a vertical load sensor in the test process is avoided, the test space is stepless and adjustable, the test requirements of different heights are facilitated, the rigidity of the whole machine is high, the deformation is small, and the accuracy of measured data is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a dynamic tension-shear testing machine according to the present invention;
FIG. 2 is an enlarged view of the structure at the A position of the dynamic tension-shear testing machine provided by the invention;
FIG. 3 is an enlarged view of the structure at the position B of the dynamic tension-shear testing machine provided by the present invention
Fig. 4 is a schematic structural diagram of a dynamic pull-shear tester table according to the present invention.
In the figure: the device comprises a reaction frame 1, a base 2, a vertical oil cylinder 3, a cross beam 4, an upper pressure plate 5, a workbench 6, a vertical column 7, a horizontal shearing oil cylinder 8, a connecting plate 9, a vertical beam 10, a connecting piece 11, a spherical hinge 12, a shearing sensor 13, a bump 14, a first sliding block 15, a fixed block 16, a lateral reaction steel guide rail 17, a bolt 18, a rolling linear guide rail 19 and a wedge block 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, a developments are drawn and are cut testing machine, including base 2, base 2's both ends all are fixed with two counter-force frame 1, base 2's upper end is fixed with four stands 7, the upper end of four stands 7 runs through jointly to be fixed on crossbeam 4, the upper end of four counter-force frame 1 is fixed with crossbeam 4 jointly, be fixed with vertical hydro-cylinder 3 on the crossbeam 4, adopt four stands 7, vertical hydro-cylinder 3 overhead host computer structure, side direction counter-force steel guide rail 17 is installed to base 2's both sides, make entire system constitute from counter-force loading structure, avoided in the process of the experiment, vertical load sensor receives the influence of horizontal shear force, the piston rod end of vertical hydro-cylinder 3 runs through crossbeam 4 and extends to the lower extreme of crossbeam 4, the piston rod end of vertical hydro-cylinder 3 is fixed with top board 5, the size of: 820mm 200mm, the reciprocating of vertical hydro-cylinder 3 control top board 5, test space is infinitely variable adjustable, make things convenient for the not experimental demand of co-altitude, application scope is wide, top board 5's both ends all are fixed with fixed block 16, all be equipped with connecting device on two fixed blocks 16, connecting device is fixed firm with top board 5 and first slider 15, all be fixed with side reaction steel guide rail 17 on four counter-force frame 1's the one end lateral wall, install first slider 15 on the side reaction steel guide rail 17, connecting device and first slider 15 are connected, first slider 15 makes things convenient for the removal of top board 5 with side reaction steel guide rail 17, the convenience is adjusted different samples, experimental power measuring range: 50kN-5000kN, maximum test force: compression 5000kN, extension 2000kN, isokinetic displacement control range: 0.5 mm/min-40 mm/min;
referring to fig. 1, three rolling linear guides 19 are fixed on the base 2, two second sliders are fixed on the three rolling linear guides 19, and the upper ends of the six second sliders are fixed with the worktable 6 and the size of the worktable 6: 820mm 200mm, the second slide block facilitates the left and right movement of the workbench 6, the moving device drives the movement of the workbench 6 to detect the sample, a plurality of limiting grooves are arranged on the workbench 6 and the upper pressure plate 5, when the sample is detected, the machine is fixed on the limiting grooves through a clamping device, the sample machine is fixed by using hexagon socket head cap screw and a T-shaped nut control plate, so that the sample is fixed on the workbench 6 and the upper pressure plate 5, the limiting grooves facilitate the movement of the clamping device, T-shaped nuts are positioned in the limiting grooves and adjusted according to different shapes and sizes, one side of the lower end of the base 2 is provided with a moving device, the moving device and the workbench 6 are correspondingly arranged, the base and the cross beam adopt an integral casting structure, the workpiece has high rigidity and elegant appearance, can realize vertical 5000kN and horizontal 300kN, dynamic and static servo coordinated loading, and dynamic tension-shear correlation tests are met, the electro-hydraulic servo control system has the advantages of large output torque and quick response, has the flexibility and rapidity of electrical control, higher control precision and high-power operation capability of hydraulic control, and can be connected with a computer to perform various complex control and data processing; it can carry out dynamic high cycle fatigue, program control fatigue and low cycle fatigue tests;
when the test is required to be controlled, a control signal is transmitted to the servo controller, the main function of the servo controller is to synthesize, compare, correct and amplify an electric signal input into a system, then the electric signal is transmitted to the electro-hydraulic servo valve, the electro-hydraulic servo valve converts a current signal input by the servo controller into hydraulic energy, the servo actuator receives pressure oil output by the electro-hydraulic servo valve to enable the horizontal shearing oil cylinder to do linear motion as required, meanwhile, the force of the horizontal shearing oil cylinder is transmitted to the detection element, the force of the detection element is fed back to the control signal through the shearing sensor, so that the output of the control signal is changed, the microcomputer controls coordinated loading, multi-stage test force maintenance, automatic continuous and stable loading, automatic load maintenance, automatic data collection and storage, curve drawing, test report printing, the computer controls the test process in time, and display the test force and the test curve, the operation is simple and reliable, and the operation is convenient.
Referring to fig. 3, the connecting device includes a U-shaped plate fixed at both sides of one end of a fixed block 16, a protruding block 14 is fixed at one end of each of four first sliding blocks 15, a notch corresponding to the U-shaped block is provided on the protruding block 14, two protruding blocks 14 at the same side are in a group, two protruding blocks 14 in the same group and two U-shaped blocks are correspondingly provided, the U-shaped blocks are located in the notch to facilitate fixing the protruding block 14 and the fixed block 16, and ensure the stability of connection, two insertion holes are provided on both side walls of the notch, a through hole corresponding to the insertion hole is provided on the U-shaped block, a first bolt 18 is inserted through one of the insertion holes, the lower end of the first bolt 18 passes through the insertion hole, the two through holes and the other insertion hole in sequence and extends to the lower end of the protruding block 14, a first nut is screwed on the first bolt 18, the first nut fixes the first bolt 18, thereby fixing, the one end of lug 14 sets up for the slope, and the one end of fixed block 16 is contradicted and is had two voussoirs 20, and the lateral wall of voussoir 20 and lug 14 corresponds the setting, has improved the fastness, and the one end of voussoir 20 and the slope department of lug 14 set up for corresponding, and two voussoirs 20 pass through second bolted connection, and the spiral shell has been screwed on the second bolt to have the second nut, and the second bolt is fixed voussoir 20, guarantees that fixed block 16 and lug 14 are fixed firm.
Referring to fig. 3, the mobile device is including fixing the upright beam 10 in base 2 one end, be fixed with horizontal shear hydro-cylinder 8 and connecting plate 9 on the upright beam 10, horizontal shear hydro-cylinder 8's piston rod end runs through connecting plate 9 and extends to one side of connecting plate 9, horizontal shear hydro-cylinder 8's piston rod end-to-end connection has shearing sensor 13, horizontal shear hydro-cylinder 8 control piston's removal, thereby control table 6's removal, power when removing can show on shearing sensor 13, conveniently know the data size, adjust at any time, the one end of workstation 6 is fixed with connecting piece 11, shearing sensor 13 is on connecting piece 11 through ball pivot 12.
In the invention, when the device works, a testing machine to be tested is fixed on a workbench 6 through a limiting groove, then a vertical oil cylinder 3 controls an upper pressure plate 5 to move downwards, then equipment is fixed on the upper pressure plate 5, then the vertical oil cylinder 3 controls the upper pressure plate 5 to move upwards, the upper pressure plate 5 drives the equipment to pull upwards, and the four counter-force frames 1 are all provided with lateral counter-force steel guide rails 17, so that the whole system forms a self-counter-force loading structure, the vertical load sensor is prevented from being influenced by horizontal shearing force in the testing process, after the counter-force frames move to a proper position, the horizontal shearing oil cylinder 8 pulls the workbench 6 to move forwards and backwards through a shearing sensor 13 and connecting pieces, the workbench 6 is convenient to move through a rolling linear guide rail 19 and a second sliding block, meanwhile, the shearing sensor 13 starts to detect the force when the horizontal shearing oil cylinder 8 pushes and pulls, because the, the upper part is a dynamic workbench, during horizontal shearing, the workbench 6 is structurally connected to a piston rod of a horizontal shearing oil cylinder 8 through a spherical hinge 12, and the horizontal shearing oil cylinder 8 is arranged on the machine base through a counter-force bent plate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a dynamic tensile shear testing machine, includes base (2), its characterized in that: two reaction frames (1) are fixed at two ends of the base (2), a cross beam (4) is fixed at the upper ends of the four reaction frames (1) together, a vertical oil cylinder (3) is fixed on the cross beam (4), the tail end of a piston rod of the vertical oil cylinder (3) penetrates through the cross beam (4) and extends to the lower end of the cross beam (4), an upper pressing plate (5) is fixed at the tail end of the piston rod of the vertical oil cylinder (3), fixed blocks (16) are fixed at two ends of the upper pressing plate (5), connecting devices are arranged on the two fixed blocks (16), lateral reaction steel guide rails (17) are fixed on the side walls of one ends of the four reaction frames (1), first sliding blocks (15) are mounted on the lateral reaction steel guide rails (17), and the connecting devices are connected with the first sliding blocks (15);
be fixed with three rolling linear guide (19) on base (2), all be fixed with two second sliders on three rolling linear guide (19), the upper end of six second sliders is fixed with workstation (6) jointly, on workstation (6), the lower extreme one side of base (2) is equipped with the mobile device, mobile device and workstation (6) correspond the setting.
2. The dynamic tension-shear testing machine of claim 1, wherein the connecting device comprises U-shaped plates fixed at two sides of one end of the fixed block (16), one end of each of the four first sliding blocks (15) is fixed with a convex block (14), the convex blocks (14) are provided with notches corresponding to the U-shaped blocks, two convex blocks (14) on the same side form a group, two convex blocks (14) in the same group are arranged corresponding to the two U-shaped blocks, the U-shaped block is positioned in the opening, two side walls of the opening are respectively provided with two jacks, the U-shaped block is provided with through holes corresponding to the jacks, a first bolt (18) penetrates through one of the insertion holes, the lower end of the first bolt (18) penetrates through the insertion hole, the two through holes and the other insertion hole in sequence and extends to the lower end of the bump (14), and a first nut is screwed on the first bolt (18).
3. The dynamic tension-shear testing machine according to claim 1, wherein the moving device comprises a vertical beam (10) fixed at one end of the base (2), a horizontal shear oil cylinder (8) and a connecting plate (9) are fixed on the vertical beam (10), the tail end of a piston rod of the horizontal shear oil cylinder (8) penetrates through the connecting plate (9) and extends to one side of the connecting plate (9), the tail end of the piston rod of the horizontal shear oil cylinder (8) is connected with a shear sensor (13), a connecting piece (11) is fixed at one end of the workbench (6), and the shear sensor (13) is connected to the connecting piece (11) through a spherical hinge (12).
4. The dynamic tension-shear testing machine of claim 1, wherein one end of the bump (14) is arranged obliquely, one end of the fixed block (16) abuts against two wedges (20), one end of each wedge (20) and the oblique part of the bump (14) are arranged correspondingly, the two wedges (20) are connected through a second bolt, and a second nut is screwed on the second bolt.
5. The dynamic tension-shear testing machine according to claim 1, wherein four columns (7) are fixed at the upper end of the base (2), and the upper ends of the four columns (7) are jointly penetrated and fixed on the cross beam (4).
6. The dynamic tension-shear test machine according to claim 1, wherein a plurality of limiting grooves are arranged on the workbench (6) and the upper pressure plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011102748.4A CN112304769A (en) | 2020-10-15 | 2020-10-15 | Dynamic tension-shear testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011102748.4A CN112304769A (en) | 2020-10-15 | 2020-10-15 | Dynamic tension-shear testing machine |
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| Publication Number | Publication Date |
|---|---|
| CN112304769A true CN112304769A (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011102748.4A Pending CN112304769A (en) | 2020-10-15 | 2020-10-15 | Dynamic tension-shear testing machine |
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| Country | Link |
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| CN (1) | CN112304769A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565833A (en) * | 2021-09-27 | 2021-10-29 | 莱州兴达液压机械科技有限公司 | Oil cylinder fatigue test machine |
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| CN206656912U (en) * | 2017-03-30 | 2017-11-21 | 北京市佛力系统公司 | Load test system is cut in tension and compression |
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| CN107607407A (en) * | 2017-10-25 | 2018-01-19 | 北京富力通达科技有限公司 | The pressure-shear test machine of Plumb load and horizontal moving guide rail |
| CN207051116U (en) * | 2017-08-04 | 2018-02-27 | 河南理工大学 | A kind of mine support material mechanical performance comprehensive test device |
| CN108760520A (en) * | 2018-07-27 | 2018-11-06 | 山东大学 | A kind of steel applying pressure-concrete push out test loading device and method |
| CN110441141A (en) * | 2019-07-17 | 2019-11-12 | 山东大学 | Novel stretching-shear testing maschine |
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2020
- 2020-10-15 CN CN202011102748.4A patent/CN112304769A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202994598U (en) * | 2012-12-31 | 2013-06-12 | 济南天辰试验机制造有限公司 | Microcomputer-controlled electro-hydraulic servo pressure shear tester |
| CN106018097A (en) * | 2016-05-09 | 2016-10-12 | 济南三越测试仪器有限公司 | Microprocessor control electro-hydraulic servo load-shear test machine |
| CN206656912U (en) * | 2017-03-30 | 2017-11-21 | 北京市佛力系统公司 | Load test system is cut in tension and compression |
| CN107576566A (en) * | 2017-08-04 | 2018-01-12 | 河南理工大学 | A kind of mine support material mechanical performance integrated test facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113565833A (en) * | 2021-09-27 | 2021-10-29 | 莱州兴达液压机械科技有限公司 | Oil cylinder fatigue test machine |
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