CN112304769B - Dynamic tensile shear testing machine - Google Patents
Dynamic tensile shear testing machine Download PDFInfo
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- CN112304769B CN112304769B CN202011102748.4A CN202011102748A CN112304769B CN 112304769 B CN112304769 B CN 112304769B CN 202011102748 A CN202011102748 A CN 202011102748A CN 112304769 B CN112304769 B CN 112304769B
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000010008 shearing Methods 0.000 claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000011161 development Methods 0.000 claims 1
- 230000018109 developmental process Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 10
- 238000007086 side reaction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a dynamic tension shear testing machine which comprises a base, wherein two opposite force frames are fixed at two ends of the base, a cross beam is jointly fixed at the upper ends of the four opposite 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, fixing blocks are fixed at two ends of the upper pressing plate, and connecting devices are arranged on the two fixing blocks. The invention adopts a structure of four upright posts and an oil cylinder overhead type host, and four guide upright 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, meanwhile, the test space is stepless and adjustable, the test requirements of different heights are convenient, 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 and shear tests, in particular to a dynamic tension and shear test machine.
Background
The dynamic tensile shear testing machine is another detection testing device which is different from the dynamic compressive shear testing machine. Dynamic pressure shearing is to apply shearing force horizontally while positive pressure is applied to the tested sample; and the dynamic tensile shear applies a shearing force in the horizontal direction while a positive tensile force is applied to the tested sample.
However, the dynamic tensile shear is that the test sample can bear forces in two aspects, thus the error of the detection data can be caused, the accuracy of the data is reduced, and the dynamic tensile shear test equipment is invented according to the national standard in order to solve the problem that the test sample (such as a shock-absorbing and isolating rubber support) is damaged by the shearing force when being stretched.
Disclosure of Invention
The invention aims to solve the defect of inaccurate data caused by the fact that a sample is damaged by shearing force when being stretched during the existing detection test.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The dynamic tension shear testing machine comprises a base, 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, fixing blocks are fixed at two ends of the upper pressing plate, connecting devices are arranged on the two fixing blocks, lateral counter-force steel guide rails are fixed on one end side walls of the four counter-force frames, a first sliding block is installed on the lateral counter-force steel guide rails, and the connecting devices are connected with the first sliding block;
The automatic rolling machine is characterized in that three rolling linear guide rails are fixed on the base, two second sliding blocks are fixed on the three rolling linear guide rails, a workbench is fixed at the upper ends of the six second sliding blocks together, a moving device is arranged on one side of the lower end of the base, and the moving device and the workbench are correspondingly arranged.
Preferably, the connecting device comprises a U-shaped plate fixed on two sides of one end of the fixed block, one end of each of the four first sliding blocks is fixedly provided with a lug, a notch corresponding to the U-shaped block is arranged on each lug, two lugs on the same side are in a group, two lugs and two U-shaped blocks on the same group are correspondingly arranged, the U-shaped blocks are located in the notch, two insertion holes are formed in two side walls of the notch, through holes corresponding to the insertion holes are formed in the U-shaped blocks, one insertion hole is internally penetrated by a first bolt, the lower end of the first bolt is penetrated by the insertion holes, the two through holes and the other insertion hole in sequence and extends to the lower end of each lug, and a nut is screwed on the first bolt.
Preferably, the moving device comprises a vertical beam fixed at one end of the base, a horizontal shearing cylinder and a connecting plate are fixed on the vertical beam, the tail end of a piston rod of the horizontal shearing cylinder penetrates through the connecting plate and extends to one side of the connecting plate, a shearing sensor is connected with the tail end of the piston rod of the horizontal shearing cylinder, a connecting piece is fixed at one end of the workbench, and the shearing sensor is connected to the connecting piece through a spherical hinge.
Preferably, one end of the lug is obliquely arranged, one end of the fixing block is abutted against two wedges, one end of the wedges and the oblique part of the lug are correspondingly arranged, the two wedges are connected through a second bolt, and a second nut is screwed on the second bolt.
Preferably, four stand columns are fixed at the upper end of the base, and the upper ends of the four stand columns are jointly penetrated and fixed on the cross beam.
Preferably, a plurality of limit 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 cylinder and four-column frame type host structure is adopted, the test space is stepless and adjustable, the test requirements of different heights are convenient, 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 adopt an integral casting structure, so that the workpiece has high rigidity and attractive and elegant appearance;
3. The oil cylinder is of a single-rod bidirectional structure, the final working procedure of the inner hole of the oil cylinder is precisely machined by a honing machine, thereby reducing the friction of the cylinder piston, improving the measurement precision of the testing machine and prolonging the service life;
To sum up, this device adopts four stand, the upper-mounted host computer structure of hydro-cylinder, and four guide risers are installed to the host computer both sides, make entire system constitute from the reactive loading structure, avoided in the test process, vertical load sensor receives the influence of horizontal shear force, and test space is stepless adjustable simultaneously, makes things convenient for the test demand of co-altitude not, and complete machine rigidity is high, and the deflection is little, guarantees that measured data is accurate.
Drawings
FIG. 1 is a schematic structural diagram of a dynamic tensile shear testing machine according to the present invention;
FIG. 2 is an enlarged view of the structure of the dynamic tensile shear testing machine A according to the present invention;
FIG. 3 is an enlarged view showing the structure of the dynamic tension-shear testing machine B according to the present invention
Fig. 4 is a schematic structural diagram of a dynamic tensile shear testing machine workbench according to the present invention.
In the figure: the device comprises a reaction frame 1, a base 2, a vertical cylinder 3, a cross beam 4, an upper pressing plate 5, a workbench 6, a stand column 7, a horizontal shearing cylinder 8, a connecting plate 9, a vertical beam 10, a connecting piece 11, a spherical hinge 12, a shearing sensor 13, a lug 14, a first sliding block 15, a fixed block 16, a side reaction steel guide rail 17, a bolt 18, a rolling linear guide rail 19 and a wedge block 20.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-4, a dynamic tensile shear testing machine, including base 2, the both ends of base 2 all are fixed with two reaction frames 1, the upper end of base 2 is fixed with four stand 7, the upper end of four stand 7 runs through jointly and is fixed on crossbeam 4, the upper end of four reaction frames 1 is fixed with crossbeam 4 jointly, be fixed with vertical hydro-cylinder 3 on the crossbeam 4, adopt four stand 7, vertical hydro-cylinder 3 overhead host structure, side reaction steel rail 17 is installed to the both sides of base 2, make entire system constitute self-reaction loading structure, avoided in the test process, 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 top board 5). 820mm x 200mm, vertical hydro-cylinder 3 control upper plate 5 reciprocates, test space stepless adjustable, the test demand of convenient not co-altitude, application scope is wide, upper plate 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 upper plate 5 and first slider 15, all be fixed with side reaction steel rail 17 on four reaction frame 1's the one end lateral wall, install first slider 15 on the side reaction steel rail 17, connecting device and first slider 15 are connected, the removal of convenient upper plate 5 of first slider 15 and side reaction steel rail 17, the convenience is adjusted different samples, test force measuring range: 50kN-5000kN, maximum test force: compression 5000kN, stretching 2000kN, constant velocity displacement control range: 0.5 mm/min-40 mm/min;
Referring to fig. 1, three rolling linear guide rails 19 are fixed on the base 2, two second sliding blocks are fixed on the three rolling linear guide rails 19, a workbench 6 is fixed at the upper ends of the six second sliding blocks, and the workbench 6 has the following dimensions: 820mm is multiplied by 200mm, the second sliding block is convenient for the left and right movement of the workbench 6, the moving device is convenient for driving the workbench 6 to move, a plurality of limit grooves are formed in the workbench 6 and the upper pressing plate 5, when a sample is detected, a machine is fixed on the limit grooves through the clamping device, the sample machine is fixed by using the hexagon socket head cap bolts and the T-shaped nut control plates, so that the sample is fixed on the workbench 6 and the upper pressing plate 5, the limit grooves are convenient for the movement of the clamping device, the T-shaped nuts are positioned in the limit grooves, the adjustment is carried out according to different shapes and sizes, the moving device is arranged at one side of the lower end of the base 2, the moving device and the workbench 6 are correspondingly arranged, the base and the cross beam are of an integral casting structure, the workpiece rigidity is large, the appearance is attractive and elegant, the vertical 5000kN, the horizontal 300kN, dynamic and dynamic servo are coordinately loaded, the dynamic tension and shear correlation test is satisfied, and the electrohydraulic servo control system has the advantages of large output torque and quick response, and high power control precision and hydraulic control capability, and high power operation capability of hydraulic control are also realized, and various computer connection control and data processing are carried out; the method can perform dynamic high cycle fatigue, program control fatigue and low cycle fatigue tests;
When the test is needed, the control signal is transmitted to the servo controller, the main function of the servo controller is to synthesize, compare, correct and amplify the electric signal of the input system, then transmit the electric signal to the electrohydraulic servo valve, the electrohydraulic servo valve converts the current signal input by the servo controller into hydraulic energy, the servo actuator receives the pressure oil output by the electrohydraulic servo valve, so that the horizontal shearing cylinder moves linearly as required, the force of the horizontal shearing cylinder is transmitted to the detecting element, the force of the detecting element is fed back to the control signal through the shearing sensor, thus changing the output of the control signal, the microcomputer controls and coordinates loading, multi-stage test force keeping, can automatically and stably load, automatically and keep loading, automatically acquire and store data, draw a curve, print a test report, and the computer timely controls the test progress, displays the test force and the test curve, and has simple and reliable operation and convenient operation.
Referring to fig. 3, the connecting device includes a U-shaped plate fixed at two sides of one end of the fixed block 16, one end of four first sliders 15 is fixed with a bump 14, the bump 14 is provided with a notch corresponding to the U-shaped block, two bumps 14 at the same side are in a group, two bumps 14 and two U-shaped blocks at the same group are correspondingly arranged, the U-shaped block is located in the notch, the bump 14 and the fixed block 16 are conveniently fixed, the stability of connection is ensured, two insertion holes are formed in two side walls of the notch, through holes corresponding to the insertion holes are formed in the U-shaped block, a first bolt 18 is arranged in one insertion hole in a penetrating manner, the lower end of the first bolt 18 penetrates through the insertion holes, the two through holes and the other insertion hole in turn and extends to the lower end of the bump 14, a nut is screwed on the first bolt 18, the first nut fixes the first bolt 18, so that the bump 14 and the fixed block 16 are fixed firmly, one end of the bump 14 is obliquely arranged, one end of the fixed block 16 is abutted against the side walls of the two wedges 20, 20 and the side walls of the bump 14 are correspondingly arranged, the firmness of the two wedges 20 and the second bolt 14 are fixedly connected to the second bolt 16, and the second bolt is fixedly arranged at the opposite ends of the two wedges through the corresponding to the first bolt 20.
Referring to fig. 3, the moving device comprises a vertical beam 10 fixed at one end of the base 2, a horizontal shearing cylinder 8 and a connecting plate 9 are fixed on the vertical beam 10, the tail end of a piston rod of the horizontal shearing cylinder 8 penetrates through the connecting plate 9 and extends to one side of the connecting plate 9, a shearing sensor 13 is connected with the tail end of the piston rod of the horizontal shearing cylinder 8, the horizontal shearing cylinder 8 controls the movement of a piston, so that the movement of the workbench 6 is controlled, when the force generated during the movement is displayed on the shearing sensor 13, the data size is conveniently known, the data size is conveniently adjusted at any time, a connecting piece 11 is fixed at one end of the workbench 6, and the shearing sensor 13 is connected to the connecting piece 11 through a spherical hinge 12.
According to the invention, when the test machine to be tested is fixed on the workbench 6 through the limit groove during operation, the vertical oil cylinder 3 controls the upper pressing plate 5 to move downwards, then the equipment is fixed on the upper pressing plate 5, then the vertical oil cylinder 3 controls the upper pressing plate 5 to move upwards, the upper pressing plate 5 drives the equipment to pull upwards, the four counter-force frames 1 are provided with the side counter-force steel guide rails 17, so that the whole system forms a self-reaction loading structure, the influence of horizontal shearing force on the vertical load sensor during the test is avoided, after the vertical load sensor is moved to a proper position, the workbench 6 is pulled to move forwards and backwards through the shearing sensor 13 and the connecting piece, the workbench 6 is conveniently moved through the rolling linear guide rails 19 and the second sliding block, and meanwhile, the shearing sensor 13 starts to detect the pushing and pulling force of the horizontal shearing oil cylinder 8.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The utility model provides a developments tensile shear testing machine, includes base (2), its characterized in that: two counter-force frames (1) are fixed at two ends of the base (2), a cross beam (4) is jointly fixed at the upper ends of the four counter-force frames (1), 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), fixing blocks (16) are fixed at two ends of the upper pressing plate (5), connecting devices are arranged on the two fixing blocks (16), lateral counter-force steel guide rails (17) are fixed on one end side walls of the four counter-force frames (1), and a first sliding block (15) is installed on the lateral counter-force steel guide rails (17) and connected with the connecting devices;
Three rolling linear guide rails (19) are fixed on the base (2), two second sliding blocks are fixed on the three rolling linear guide rails (19), a workbench (6) is fixed at the upper ends of the six second sliding blocks together, a moving device is arranged on one side of the lower end of the base (2), and the moving device and the workbench (6) are correspondingly arranged; the connecting device comprises a U-shaped plate fixed on two sides of one end of a fixed block (16), wherein one end of each of four first sliding blocks (15) is fixedly provided with a lug (14), the lug (14) is provided with a notch corresponding to the U-shaped block, two lugs (14) on the same side are in a group, two lugs (14) and two U-shaped blocks in the same group are correspondingly arranged, the U-shaped blocks are positioned in the notch, two side walls of the notch are respectively provided with two jacks, the U-shaped blocks are provided with through holes corresponding to the jacks, one of the jacks is internally penetrated with a first bolt (18), the lower end of each first bolt (18) is penetrated with the jack, the two through holes and the other jack in sequence and extends to the lower end of the lug (14), and the first bolt (18) is screwed with a first nut; the movable device comprises a vertical beam (10) fixed at one end of a base (2), a horizontal shearing 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 shearing oil cylinder (8) penetrates through the connecting plate (9) and extends to one side of the connecting plate (9), a shearing sensor (13) is connected with the tail end of the piston rod of the horizontal shearing oil cylinder (8), a connecting piece (11) is fixed at one end of a workbench (6), and the shearing sensor (13) is connected onto the connecting piece (11) through a spherical hinge (12).
2. The dynamic tension shear testing machine according to claim 1, wherein one end of the protruding block (14) is obliquely arranged, one end of the fixing block (16) is abutted against two wedge blocks (20), one end of the wedge block (20) and the oblique part of the protruding block (14) are correspondingly arranged, the two wedge blocks (20) are connected through a second bolt, and a second nut is screwed on the second bolt.
3. The dynamic tensile shear testing machine according to claim 1, wherein four upright posts (7) are fixed at the upper end of the base (2), and the upper ends of the four upright posts (7) are jointly penetrated and fixed on the cross beam (4).
4. The dynamic tension shear testing machine according to claim 1, wherein a plurality of limit grooves are formed in the workbench (6) and the upper pressing plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011102748.4A CN112304769B (en) | 2020-10-15 | 2020-10-15 | Dynamic tensile shear testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011102748.4A CN112304769B (en) | 2020-10-15 | 2020-10-15 | Dynamic tensile shear testing machine |
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| Publication Number | Publication Date |
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| CN112304769A CN112304769A (en) | 2021-02-02 |
| CN112304769B true CN112304769B (en) | 2024-08-27 |
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| CN202011102748.4A Active CN112304769B (en) | 2020-10-15 | 2020-10-15 | Dynamic tensile shear testing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113565833B (en) * | 2021-09-27 | 2022-01-04 | 莱州兴达液压机械科技有限公司 | Oil cylinder fatigue test machine |
| CN114459919A (en) * | 2022-03-25 | 2022-05-10 | 山东三越仪器有限公司 | Dynamic compression shear tester device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| 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 |
| CN106018097B (en) * | 2016-05-09 | 2019-03-19 | 济南三越测试仪器有限公司 | Microcomputer-controlled electro-hydraulic servo load-shear |
| 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 |
| CN107576566B (en) * | 2017-08-04 | 2019-09-27 | 河南理工大学 | A kind of mine support material mechanical performance integrated test facility |
| 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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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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