CN114112650A - Experimental device for compression performance test and use method thereof - Google Patents

Experimental device for compression performance test and use method thereof Download PDF

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Publication number
CN114112650A
CN114112650A CN202111645017.9A CN202111645017A CN114112650A CN 114112650 A CN114112650 A CN 114112650A CN 202111645017 A CN202111645017 A CN 202111645017A CN 114112650 A CN114112650 A CN 114112650A
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China
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clamping
clamping block
assembly
compression
limiting
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CN202111645017.9A
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CN114112650B (en
Inventor
刘晓东
周锦地
张莉
果立成
逯浩
李志兴
李忠刚
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Harbin Institute of Technology
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Harbin Institute of Technology
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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
    • G01N3/02—Details
    • G01N3/04—Chucks
    • 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
    • G01N3/02—Details
    • G01N3/06—Special adaptations of indicating or recording means
    • G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
    • 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
    • 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
    • G01N2203/0019—Compressive
    • 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
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0073—Fatigue
    • 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
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/04—Chucks, fixtures, jaws, holders or anvils
    • G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
    • G01N2203/0647—Image analysis

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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 relates to the technical field of compression performance testing, in particular to an experimental device for compression performance testing and a using method thereof. The experimental device comprises a first compression assembly, a first clamping assembly, a second clamping assembly and a second compression assembly which are sequentially arranged along the height direction of a material to be tested; the first compression assembly comprises a first compression platform and a first adjusting assembly, and the first clamping assembly comprises a first clamping block, a second clamping block and a first limiting assembly; the second compression assembly comprises a second compression platform and a second adjusting assembly, and the second clamping assembly comprises a third clamping block, a fourth clamping block and a second limiting assembly; the first adjusting component and the second adjusting component are used for adjusting the position of the material to be measured in the thickness direction, and the first limiting component and the second limiting component are used for adjusting the position of the material to be measured in the width direction. The experimental device provided by the invention can ensure that the material to be tested is in the centering position.

Description

Experimental device for compression performance test and use method thereof
Technical Field
The invention relates to the technical field of compression performance testing, in particular to an experimental device for compression performance testing and a using method thereof.
Background
A compression tester is an apparatus for testing the compression properties of a material, by which the compression static and fatigue properties of the material can be obtained and the full-field strain of the material can be monitored by DIC (Digital Image Correlation) techniques. The material to be tested needs to be processed into an axisymmetric geometric body before the compression performance test is carried out, so that the inaccurate test result caused by bending of the material to be tested in the compression process is prevented.
In the related art, when a material to be tested is compressed, it is difficult to ensure that the material to be tested is in a centered position (that is, the central symmetry axis of the material to be tested and the direction of the central pressure of the compression performance testing machine are on the same straight line).
Therefore, it is desirable to provide an experimental apparatus for compression performance testing and a method for using the same to solve the above problems.
Disclosure of Invention
The embodiment of the invention provides an experimental device for compression performance testing and a using method thereof, which can ensure that a material to be tested is in a centering position.
In a first aspect, the invention provides an experimental device for compression performance testing, which comprises a first compression assembly, a first clamping assembly, a second clamping assembly and a second compression assembly, wherein the first compression assembly, the first clamping assembly, the second clamping assembly and the second compression assembly are sequentially arranged in the height direction of a material to be tested;
the first compression assembly comprises a first compression platform and a first adjusting assembly, the first clamping assembly comprises a first clamping block, a second clamping block and a first limiting assembly, the first clamping block and the second clamping block are fixed with the first compression platform through the first adjusting assembly, and the first clamping block and the second clamping block are used for clamping a part of a material to be measured;
the second compression assembly comprises a second compression platform and a second adjusting assembly, the second clamping assembly comprises a third clamping block, a fourth clamping block and a second limiting assembly, the third clamping block and the fourth clamping block are fixed with the second compression platform through the second adjusting assembly, and the third clamping block and the fourth clamping block are used for clamping the other part of the material to be detected;
the first adjusting component and the second adjusting component are used for adjusting the position of the material to be measured in the thickness direction, and the first limiting component and the second limiting component are used for adjusting the position of the material to be measured in the width direction.
Preferably, the first clamping assembly and the second clamping assembly are connected through a linear bearing and a guide rail, and the linear bearing and the guide rail are used for enabling the first clamping assembly and/or the second clamping assembly to slide along the height direction of the material to be detected.
Preferably, the first clamping block and the second clamping block are provided with two linear bearings, and the third clamping block and the fourth clamping block are provided with two guide rails;
the two linear bearings arranged on the first clamping block are located at two ends of the width direction of the material to be tested, and the two linear bearings arranged on the second clamping block are located at two ends of the width direction of the material to be tested.
Preferably, the first compression platform is provided with a first long drawing hole, the first long drawing hole extends along the thickness direction of the material to be measured, the first adjusting assembly comprises a first fixing screw, the first clamping block and the second clamping block are both provided with a first threaded hole, and the first fixing screw penetrates through the first long drawing hole and then is matched with the first threaded hole, so that the first clamping block and the second clamping block are fixed on the first compression platform;
the second compression platform is provided with a second long drawing hole, the second long drawing hole extends along the thickness direction of the material to be measured, the second adjusting assembly comprises a second fixing screw, the first clamping block and the second clamping block are both provided with second threaded holes, and the second fixing screw penetrates through the second long drawing hole and then is matched with the second threaded holes, so that the third clamping block and the fourth clamping block are fixed on the second compression platform;
and adjusting the position of the material to be measured in the thickness direction by adjusting the position of the first fixing screw on the first long drawing hole and the position of the second fixing screw on the second long drawing hole.
Preferably, the first adjusting assembly further comprises a first limit screw for limiting the position of the first fixing screw in the first elongated hole;
the second adjusting assembly further comprises a second limiting screw for limiting the position of the second fixing screw in the second elongated hole.
Preferably, the first limiting assembly comprises a first L-shaped limiting strip and two third fixing screws, the first L-shaped limiting strip comprises a first fixing portion and a first limiting portion, the first fixing portion is provided with a first width-limiting pull hole, the first width-limiting pull hole extends along the width direction of the material to be measured, the first clamping block or the second clamping block is provided with a third threaded hole, the third fixing screws penetrate through the first width-limiting pull hole and then are matched with the third threaded hole, so that the first L-shaped limiting strip is fixed on the first clamping block or the second clamping block, and the first limiting portion is used for limiting the position of the material to be measured in the width direction;
the second limiting component comprises a second L-shaped limiting strip and two fourth fixing screws, the second L-shaped limiting strip comprises a second fixing portion and a second limiting portion, the second fixing portion is provided with a second width limiting pull hole, the second width limiting pull hole is formed in the edge of the width direction of the material to be tested, a third clamping block or a fourth clamping block is provided with a fourth threaded hole, and the fourth fixing screws penetrate through the second width limiting pull hole and then are matched with the fourth threaded hole, so that the second L-shaped limiting strip is fixed on the third clamping block or the fourth clamping block, and the second limiting portion is used for limiting the position of the width direction of the material to be tested.
Preferably, the first clamping assembly further comprises a first clamping screw, the first clamping block and the second clamping block are provided with a first clamping threaded hole, and the first clamping screw is matched with the first clamping threaded hole, so that the first clamping block and the second clamping block clamp a part of the material to be tested;
the second clamping assembly further comprises a second clamping screw, a second clamping threaded hole is formed in the third clamping block and the fourth clamping block, and the first clamping block and the second clamping block are matched with each other through the second clamping screw and the second clamping threaded hole, so that the first clamping block and the second clamping block clamp the other part of the material to be tested.
Preferably, the first compression platform comprises four first long drawing holes, scales are marked on two surfaces of the first compression platform where the first long drawing holes are arranged, the second compression platform comprises four second long drawing holes, and scales are marked on two surfaces of the second compression platform where the second long drawing holes are arranged;
the face that first centre gripping subassembly set up the spacing strip of first L shape is marked with the scale, the face that second centre gripping subassembly set up the spacing strip of second L shape is marked with the scale.
Preferably, the first compression assembly further comprises a first clamping rod, the first compression platform is connected with the compression testing machine through the first clamping rod, and the first clamping rod is collinear with the central symmetry axis of the material to be tested;
the second compression assembly further comprises a second clamping rod, the second compression platform is connected with the compression testing machine through the second clamping rod, and the second clamping rod is collinear with the central symmetry axis of the material to be tested.
In a second aspect, the present invention further provides a method for using an experimental apparatus for compression performance testing, where the experimental apparatus is the experimental apparatus described in any one of the first aspects, and the method includes the following steps:
clamping a portion of a material to be tested using the first clamping block and the second clamping block;
clamping another part of the material to be tested by using the third clamping block and the fourth clamping block;
the first adjusting component and the second adjusting component are utilized to adjust the position of the material to be measured in the thickness direction, and the first limiting component and the second limiting component are utilized to adjust the position of the material to be measured in the width direction, so that the material to be measured is in a centering position.
Compared with the prior art, the invention at least has the following beneficial effects:
according to the material centering device, a first compression assembly, a first clamping assembly, a second clamping assembly and a second compression assembly are arranged along the height direction of a material to be measured, the material to be measured is clamped by the first clamping assembly and the second clamping assembly, then the material to be measured is adjusted to a centering position along the thickness direction through the first adjusting assembly and the second adjusting assembly, and then the material to be measured is adjusted to the centering position along the width direction through the first limiting assembly and the second limiting assembly, so that the centering position adjustment of the material to be measured is completed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an experimental apparatus for compression performance testing according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first compression assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second compression assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a first clamping assembly according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a second clamping assembly according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first limiting assembly according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second limiting assembly according to an embodiment of the present invention. In the figure:
1-a first compression assembly;
11-a first compression stage;
111-a first elongated hole;
12-a first adjustment assembly;
121-a first set screw;
122. a first limit screw;
13-a first clamping bar;
2-a second compression assembly;
21-a second compression stage;
211-a second elongated hole;
22-a second adjustment assembly;
221-a second set screw;
222-a second stop screw;
23-a second clamping bar;
3-a first clamping assembly;
31-a first clamping block;
32-a second clamping block;
33-a first stop assembly;
331-a first L-shaped stop bar;
331 a-a first fixed part;
331 b-a first width-limiting pull hole;
331 c-a first limiting part;
332. a third fixing screw;
34-a linear bearing;
35-a first threaded hole;
36-a third threaded hole;
37-a first clamping screw;
38-a first clamping threaded hole;
4-a second holding assembly;
41-a third clamping block;
42-a fourth clamping block;
43-a second stop assembly;
431-a second L-shaped stop bar;
431 a-a second fixed part;
431 b-a second width-limiting broaching hole;
431 c-a second limiting part;
432-fourth set screw;
44-a guide rail;
45-a second threaded hole;
46-a fourth threaded hole;
47-a second clamping screw;
48-a second clamping threaded hole;
5-material to be tested.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
In the description of the embodiments of the present invention, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be understood that the terms "upper" and "lower" as used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.
As shown in fig. 1, the present invention provides an experimental apparatus for compression performance testing, including a first compression component 1, a first clamping component 3, a second clamping component 4 and a second compression component 2, which are sequentially arranged along the height direction of a material 5 to be tested, wherein the first compression component 1 and the second compression component 2 are both connected with a compression testing machine;
the first compression assembly 1 comprises a first compression platform 11 and a first adjusting assembly 12, the first clamping assembly 3 comprises a first clamping block 31, a second clamping block 32 and a first limiting assembly 33, the first clamping block 31 and the second clamping block 32 are fixed with the first compression platform 11 through the first adjusting assembly 12, and the first clamping block 31 and the second clamping block 32 are used for clamping a part of the material 5 to be measured;
the second compression assembly 2 comprises a second compression platform 21 and a second adjusting assembly 22, the second clamping assembly 4 comprises a third clamping block 41, a fourth clamping block 42 and a second limiting assembly 43, the third clamping block 41 and the fourth clamping block 42 are fixed with the second compression platform 21 through the second adjusting assembly 22, and the third clamping block 41 and the fourth clamping block 42 are used for clamping the other part of the material 5 to be measured;
the first adjusting assembly 12 and the second adjusting assembly 22 are used for adjusting the position of the material 5 to be measured in the thickness direction, and the first limiting assembly 33 and the second limiting assembly 43 are used for adjusting the position of the material 5 to be measured in the width direction.
In the invention, a first compression assembly 1, a first clamping assembly 3, a second clamping assembly 4 and a second compression assembly 2 are arranged along the height direction of a material 5 to be measured, the material 5 to be measured is clamped by the first clamping assembly 3 and the second clamping assembly, then the material 5 to be measured is adjusted to a centering position along the thickness direction through a first adjusting assembly 12 and a second adjusting assembly 22, and then the material 5 to be measured is adjusted to the centering position along the width direction through a first limiting assembly 33 and a second limiting assembly 43, so that the centering position adjustment of the material 5 to be measured is completed.
It should be noted that the first adjusting assembly 12 can adjust the distance between the first clamping block 31 and the second clamping block 32, the second adjusting assembly 22 can adjust the distance between the third clamping block 41 and the fourth clamping block 42, and the experimental device has the effect of clamping the materials 5 to be tested with different thicknesses by adjusting the distance between the clamping blocks; the first limiting component 33 and the second limiting component 43 can be adjusted in the width direction, and the experimental device has the effect of clamping the materials to be tested 5 with different widths by adjusting the distance between the first limiting component 33 and the second limiting component 43.
In addition, the first clamping block and the second clamping block clamp one part of the material to be tested, and the third clamping block and the fourth clamping block clamp the other part of the material to be tested, so that the material to be tested can be prevented from buckling. Meanwhile, the material to be tested is clamped in the experimental device, and the fatigue performance of the material to be tested can be tested.
According to some preferred embodiments, the first clamping assembly 3 and the second clamping assembly 4 are connected through a linear bearing 34 and a guide rail 44, and the linear bearing 34 and the guide rail 44 are used for enabling the first clamping assembly 3 and/or the second clamping assembly 4 to slide along the height direction of the material 5 to be measured.
In the invention, the first clamping assembly 3 and the second clamping assembly 4 are connected through the linear bearing 34 and the guide rail 44, the linear bearing 34 and the guide rail 44 can slide along the height direction of the material 5 to be tested, and the experimental device can fix the materials 5 to be tested with different heights through the sliding guide rail 44. In addition, the directions of the linear bearing 34 and the guide rail 44 are consistent with the height direction of the material 5 to be tested, so that the material 5 to be tested can be prevented from being stressed except in the height direction when the material 5 to be tested is subjected to a compression performance test, and further, the material 5 to be tested is ensured to be subjected to stress deformation along the height direction.
According to some preferred embodiments, the first and second clamping blocks 31, 32 are each provided with two linear bearings 34, the third and fourth clamping blocks 41, 42 are each provided with two guide rails 44;
the two linear bearings 34 of the first clamping block 31 are located at two ends of the material 5 to be measured in the width direction, and the two linear bearings 34 of the second clamping block 32 are located at two ends of the material 5 to be measured in the width direction.
In the present invention, the sliding sets of the linear bearing 34 and the guide rail 44 are provided at both ends of the material 5 to be measured in the width direction, so that the surface of the material 5 to be measured, which is composed of the length and the width, is not shielded by the linear bearing 34 and the guide rail 44, and further, when the material 5 to be measured is fixed by an experimental apparatus and a compression test is performed, the full-field strain of the material 5 to be measured can be monitored by a Digital Image Correlation (DIC) technique. In addition, the linear bearing 34 and the guide rail 44 can prevent the material 5 to be tested from buckling to meet the compression test requirement.
According to some preferred embodiments, as shown in fig. 2, the first compression platform 11 is provided with a first long drawing hole 111, the first long drawing hole 111 extends along the thickness direction of the material 5 to be measured, the first adjusting component 12 includes a first fixing screw 121, the first clamping block 31 and the second clamping block 32 are both provided with a first threaded hole 35, and the first fixing screw 121 passes through the first long drawing hole 111 and then cooperates with the first threaded hole 35 to fix the first clamping block 31 and the second clamping block 32 on the first compression platform 11;
as shown in fig. 3, the second compression platform 21 is provided with a second long drawing hole 211, the second long drawing hole 211 extends along the thickness direction of the material 5 to be measured, the second adjusting assembly 22 includes a second fixing screw 221, the first clamping block 31 and the second clamping block 32 are both provided with a second threaded hole 45, and the second fixing screw 221 passes through the second long drawing hole 211 and then cooperates with the second threaded hole 45, so that the third clamping block 41 and the fourth clamping block 42 are fixed on the second compression platform 21;
the position of the material 5 to be measured in the thickness direction is adjusted by adjusting the position of the first fixing screw 121 on the first long drawing hole 111 and the position of the second fixing screw 221 on the second long drawing hole 211.
In the present invention, the first clamping block 31 and the second clamping block 32 are respectively fixed on the first compression platform 11 by the first fixing screw 121 penetrating through the first long drawing hole 111, because the first long drawing hole 111 extends along the thickness direction of the material 5 to be tested, the first clamping block 31 and the second clamping block 32 can adjust the position along the thickness direction through the first long drawing hole 111, and further the first clamping block 31 and the second clamping block 32 can adjust the clamped material 5 to be tested to the centering position along the thickness direction through adjustment, and in addition, the experimental apparatus can clamp the materials 5 to be tested with different thicknesses by adjusting the distance between the first clamping block 31 and the second clamping block 32 along the thickness direction.
Similarly, the second clamping block 32 and the third clamping block 41 are respectively fixed on the second compression platform 21 by a second fixing screw 221 passing through the second long drawing hole 211, because the second long drawing hole 211 extends along the thickness direction of the material 5 to be tested, the third clamping block 41 and the fourth clamping block 42 can adjust the position along the thickness direction through the second long drawing hole 211, and further the third clamping block 41 and the fourth clamping block 42 can adjust the clamped material 5 to be tested to the centering position along the thickness direction through adjustment, and furthermore, the experimental device can clamp the materials 5 to be tested with different thicknesses by adjusting the distance between the third clamping block 41 and the fourth clamping block 42 along the thickness direction.
According to some preferred embodiments, the first adjusting assembly 12 further comprises a first limiting screw 122, the first limiting screw 122 is used for limiting the position of the first fixing screw 121 in the first elongated hole 111;
the second adjusting assembly 22 further comprises a second limiting screw 222, and the second limiting screw 222 is used for limiting the position of the second fixing screw 221 in the second elongated hole 211.
In the present invention, the ends of the first limiting screw 122 and the second limiting screw 222 abut against the first fixing screw 121 and the second fixing screw 221, so as to prevent the material 5 to be tested from deviating from the centering position due to the sliding of the first fixing screw 121 and/or the second fixing screw 221 in the first elongated hole 111 and/or the second elongated hole 211 caused by the excessive pressure when the material 5 to be tested is subjected to the pressure test.
According to some preferred embodiments, as shown in fig. 4 to 7, the first limiting component 33 includes a first L-shaped limiting strip 331 and two third fixing screws 332, the first L-shaped limiting strip 331 includes a first fixing portion 331a and a first limiting portion 331c, the first fixing portion 331a is provided with a first width-limiting pull hole 331b, the first width-limiting pull hole 331b extends along the width direction of the material 5 to be measured, the first clamping block 31 or the second clamping block 32 is provided with a third threaded hole 36, the third fixing screws 332 pass through the first width-limiting pull hole 331b and then cooperate with the third threaded hole 36, so that the first L-shaped limiting strip 331 is fixed on the first clamping block 31 or the second clamping block 32, and the first limiting portion 331c is used for limiting the position of the material 5 to be measured in the width direction;
the second limiting assembly 43 comprises a second L-shaped limiting strip 431 and two fourth fixing screws 432, the second L-shaped limiting strip 431 comprises a second fixing portion 431a and a second limiting portion 431c, the second fixing portion 431a is provided with a second width-limiting pull hole 431b, the second width-limiting pull hole 431b extends in the width direction of the material 5 to be measured, the third clamping block 41 or the fourth clamping block 42 is provided with a fourth threaded hole 46, the fourth fixing screws 432 penetrate through the second width-limiting pull hole 431b and then are matched with the fourth threaded hole 46, so that the second L-shaped limiting strip 431 is fixed on the third clamping block 41 or the fourth clamping block 42, and the second limiting portion 431c is used for limiting the position of the material 5 to be measured in the width direction.
In the invention, a straight line formed by connecting two third fixing screws 332 is parallel to the width direction of the material 5 to be measured, the third fixing screws 332 pass through the first width-limiting pulling holes 331b to fix the first L-shaped limiting strip 331 on the first clamping block 31 or the second clamping block 32, and thus, the position of the first L-shaped limiting strip 331 fixed by the third fixing screws 332 can be adjusted along the width direction; the straight line that two fourth fixed screws 432 connect and form is parallel with the width direction of material 5 to be measured, and fourth fixed screw 432 passes second limit for width hand-hole 431b and fixes second L shape spacing 431 on third grip block 41 or fourth grip block 42, so set up, make the spacing 431 of second L shape fixed by fourth fixed screw 432 can be along width direction adjustment position. The first limiting portion 331c and the second limiting portion 431c clamp the material 5 to be tested in the width direction, the first L-shaped limiting strip 331 and the second L-shaped limiting strip 431 are adjusted through the first width limiting pull hole 331b and the second width limiting pull hole 431b, the positions of the first limiting portion 331c and the second limiting portion 431c can be adjusted in the width direction of the material 5 to be tested, the material 5 to be tested is adjusted to be in a centering position in the width direction, and in addition, the experimental device can fix the material 5 to be tested with different widths by adjusting the distance between the first limiting portion 331c and the second limiting portion 431 c.
According to some preferred embodiments, the first clamping assembly 3 further comprises a first clamping screw 37, the first clamping block 31 and the second clamping block 32 are provided with a first clamping threaded hole 38, and the first clamping screw 37 and the first clamping threaded hole 38 are matched to enable the first clamping block 31 and the second clamping block 32 to clamp a part of the material 5 to be measured;
the second clamping assembly 4 further comprises a second clamping screw 47, the third clamping block 41 and the fourth clamping block 42 are provided with a second clamping threaded hole 48, and the first clamping block 31 and the second clamping block 32 are matched with the second clamping threaded hole 48 through the second clamping screw 47 so as to clamp another part of the material 5 to be tested.
In the invention, a first clamping screw 37 penetrates through the first clamping block 31 to fix the second clamping block 32 together, and the first clamping block 31 and the second clamping block 32 clamp the material 5 to be measured by tightening the first clamping screw 37; the second clamping screw 47 penetrates through the third clamping block 41 to fix the fourth clamping block 42 together, and the third clamping block 41 and the fourth clamping block 42 clamp the material 5 to be measured by tightening the second clamping screw 47.
According to some preferred embodiments, the first compression platform 11 comprises four first long drawing holes 111, the two faces of the first compression platform 11 provided with the first long drawing holes 111 are marked with scales, the second compression platform 21 comprises four second long drawing holes 211, and the two faces of the second compression platform 21 provided with the second long drawing holes 211 are marked with scales;
the face that first centre gripping subassembly 3 set up first L shape spacing 331 marks the scale, and the face that second centre gripping subassembly 4 set up second L shape spacing 431 marks the scale.
In the invention, the corresponding positions of the first compression platform 11 and the second compression platform 21 are marked with scales, so that the adjustment of the first clamping block 31, the second clamping block 32, the third clamping block 41 and the fourth clamping block 42 along the thickness direction is more accurate, for example, 0 scale is marked at the thickness centering positions of the first compression platform 11 and the second compression platform 21, the thickness value of the material 5 to be measured is measured, then the first clamping block 31 and the second clamping block 32 are moved 1/2 thickness values along the thickness direction towards two sides of the 0 scale according to the thickness value of the material 5 to be measured, the third clamping block 41 and the fourth clamping block 42 are moved 1/2 thickness values along the thickness direction towards two sides of the 0 scale, and thus the adjustment of the material 5 to be measured in the thickness direction is more accurate.
In the invention, scales are marked on the surface of the first L-shaped limiting strip 331 arranged on the first clamping assembly 3, and scales are marked on the surface of the second L-shaped limiting strip 431 arranged on the second clamping assembly 4, so that the first L-shaped limiting strip 331 and the second L-shaped limiting strip 431 are more accurately adjusted along the width direction, for example, 0 scale is marked on the width centering position of the first clamping assembly 3 and the second clamping assembly 4, the width value of the material 5 to be measured is measured, and then the first L-shaped limiting strip 331 and the second L-shaped limiting strip 431 are moved 1/2 width values along the width direction to two sides of the 0 scale according to the width value of the material 5 to be measured, so that the adjustment of the material 5 to be measured in the width direction is more accurate.
According to some preferred embodiments, the first compression assembly 1 further comprises a first clamping rod 13, the first compression platform 11 is connected with the compression tester through the first clamping rod 13, and the first clamping rod 13 is collinear with the central symmetry axis of the material 5 to be tested;
the second compression assembly 2 further comprises a second clamping rod 23, the second compression platform 21 is connected with the compression testing machine through the second clamping rod 23, and the second clamping rod 23 is collinear with the central symmetry axis of the material 5 to be tested.
In the present invention, the first clamping rod 13 and the second clamping rod 23 are collinear with the central symmetry axis of the material 5 to be tested, and the arrangement is such that the point of action of the force applied by the compression testing machine to the first compression platform 11 and the second compression platform 21 through the first clamping rod 13 and the second clamping rod 23 is on the central symmetry axis.
According to some more preferred embodiments, a table-like structure is provided at the junction of the first clamping bar 13 and the first compression platform 11 and at the junction of the second clamping bar 23 and the second compression platform 21, for preventing wire slippage at the junction due to excessive pressure.
The invention also provides a use method of the experimental device for the compression performance test, the experimental device is the experimental device, and the use method comprises the following steps:
clamping a portion of the material 5 to be measured with the first and second clamping blocks 31 and 32;
clamping another part of the material 5 to be measured by using the third clamping block 41 and the fourth clamping block 42;
the first adjusting component 12 and the second adjusting component 22 are used for adjusting the position of the material 5 to be measured in the thickness direction, and the first limiting component 33 and the second limiting component 43 are used for adjusting the position of the material 5 to be measured in the width direction, so that the material 5 to be measured is in the centering position.
In the invention, after the material 5 to be tested is adjusted to the centering position, the load preloading needs to be carried out on the material 5 to be tested before the compression test, a certain pressure is applied to the experimental device through the compression testing machine, so that the first compression platform 11 and the second compression platform 21 are fully contacted with the material 5 to be tested at the centering position, and if the load preloading is not carried out, the data of pressure and deformation are not real when the pressure test is just started because of insufficient contact.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The experimental device for the compression performance test is characterized by comprising a first compression assembly (1), a first clamping assembly (3), a second clamping assembly (4) and a second compression assembly (2) which are sequentially arranged in the height direction of a material to be tested (5), wherein the first compression assembly (1) and the second compression assembly (2) are connected with a compression testing machine;
the first compression assembly (1) comprises a first compression platform (11) and a first adjusting assembly (12), the first clamping assembly (3) comprises a first clamping block (31), a second clamping block (32) and a first limiting assembly (33), the first clamping block (31) and the second clamping block (32) are fixed with the first compression platform (11) through the first adjusting assembly (12), and the first clamping block (31) and the second clamping block (32) are used for clamping one part of a material (5) to be measured;
the second compression assembly (2) comprises a second compression platform (21) and a second adjusting assembly (22), the second clamping assembly (4) comprises a third clamping block (41), a fourth clamping block (44) and a second limiting assembly (43), the third clamping block (41) and the fourth clamping block (44) are fixed with the second compression platform (21) through the second adjusting assembly (22), and the third clamping block (41) and the fourth clamping block (44) are used for clamping the other part of the material to be measured (5);
the first adjusting component (12) and the second adjusting component (22) are used for adjusting the position of the material to be measured (5) in the thickness direction, and the first limiting component (33) and the second limiting component (43) are used for adjusting the position of the material to be measured (5) in the width direction.
2. The experimental device according to claim 1, characterized in that the first clamping assembly (3) and the second clamping assembly (4) are connected through a linear bearing (34) and a guide rail (44), and the linear bearing (34) and the guide rail (44) are used for enabling the first clamping assembly (3) and/or the second clamping assembly (4) to slide along the height direction of the material to be measured (5).
3. Laboratory apparatus according to claim 2, characterized in that said first and second clamping blocks (31, 32) are each provided with two of said linear bearings (34), said third and fourth clamping blocks (41, 44) are each provided with two of said guide rails (44);
two that first grip block (31) set up linear bearing (34) are located the width direction's of awaiting measuring material (5) both ends, two that second grip block (32) set up linear bearing (34) are located the width direction's of awaiting measuring material (5) both ends.
4. The experimental device according to claim 1, wherein the first compression platform (11) is provided with a first long drawing hole (111), the first long drawing hole (111) extends along a thickness direction of the material to be measured (5), the first adjusting component (12) comprises a first fixing screw (121), the first clamping block (31) and the second clamping block (32) are provided with a first threaded hole (112), and the first fixing screw (121) passes through the first long drawing hole (35) and then is matched with the first threaded hole (35) so as to fix the first clamping block (31) and the second clamping block (32) on the first compression platform (11);
the second compression platform (21) is provided with a second long drawing hole (211), the second long drawing hole (211) extends along the thickness direction of the material to be measured (5), the second adjusting assembly (22) comprises a second fixing screw (221), the first clamping block (31) and the second clamping block (32) are both provided with a second threaded hole (45), and the second fixing screw (221) penetrates through the second long drawing hole (211) and then is matched with the second threaded hole (45) so that the third clamping block (41) and the fourth clamping block (44) are fixed on the second compression platform (21);
and adjusting the position of the material to be measured (5) in the thickness direction by adjusting the position of the first fixing screw (121) on the first long elongated hole (111) and the position of the second fixing screw (221) on the second long elongated hole (211).
5. The experimental device according to claim 4, characterized in that the first adjustment assembly (12) further comprises a first limit screw (122), the first limit screw (122) being used for limiting the position of the first fixing screw (121) in the first elongated hole (111);
the second adjusting assembly (22) further comprises a second limiting screw (222), and the second limiting screw (222) is used for limiting the position of the second fixing screw (221) in the second long drawing hole (211).
6. The experimental device according to claim 1, wherein the first limiting component (33) comprises a first L-shaped limiting strip (331) and two third fixing screws (332), the first L-shaped limiting strip (331) comprises a first fixing portion (331a) and a first limiting portion (331c), the first fixing portion (331a) is provided with a first width-limiting pull hole (331b), the first width-limiting pull hole (331b) extends along the width direction of the material to be tested (5), the first clamping block (31) or the second clamping block (32) is provided with a third threaded hole (36), and the third fixing screw (332) passes through the first width-limiting pull hole (331b) and then is matched with the third threaded hole (36) so as to fix the first L-shaped limiting strip (331) on the first clamping block (31) or the second clamping block (32), the first limiting part (331c) is used for limiting the position of the material to be measured (5) in the width direction;
the second limiting component (43) comprises a second L-shaped limiting strip (431) and two fourth fixing screws (432), the second L-shaped limiting strip (431) comprises a second fixing part (431a) and a second limiting part (431c), the second fixing part (431a) is provided with a second width limiting and pulling hole (431b), the second width limiting and pulling hole (431b) extends along the width direction of the material to be measured (5), the third clamping block (41) or the fourth clamping block (44) is provided with a fourth threaded hole (46), the fourth fixing screw (432) is matched with a fourth threaded hole (46) after passing through the second width limiting pulling hole (431b), so that the second L-shaped limiting strip (431) is fixed on the third clamping block (41) or the fourth clamping block (44), the second limiting part (431c) is used for limiting the position of the material to be measured (5) in the width direction.
7. The experimental device according to claim 1, characterized in that the first clamping assembly (3) further comprises a first clamping screw (37), the first clamping block (31) and the second clamping block (32) are provided with a first clamping threaded hole (38), and the first clamping block (31) and the second clamping block (32) are caused to clamp a portion of the material to be tested (5) by the first clamping screw (37) and the first clamping threaded hole (38) being engaged;
the second clamping assembly (4) further comprises a second clamping screw (47), the third clamping block (41) and the fourth clamping block (44) are provided with a second clamping threaded hole (48), and the first clamping block (31) and the second clamping block (32) clamp the other part of the material to be tested (5) through the cooperation of the second clamping screw (47) and the second clamping threaded hole (48).
8. The experimental device according to any one of claims 1 to 7, characterized in that the first compression platform (11) comprises four first long drawing holes (111), the two faces of the first compression platform (11) where the first long drawing holes (111) are arranged are marked with scales, the second compression platform (21) comprises four second long drawing holes (211), and the two faces of the second compression platform (21) where the second long drawing holes (211) are arranged are marked with scales;
the face that first centre gripping subassembly (3) set up first L shape spacing (331) is marked with the scale, the face that second centre gripping subassembly (4) set up second L shape spacing (431) is marked with the scale.
9. The experimental apparatus according to claim 1, characterized in that the first compression assembly (1) further comprises a first clamping rod (13), the first compression platform (11) is connected with the compression tester through the first clamping rod (13), and the first clamping rod (13) is collinear with the central symmetry axis of the material to be tested (5);
the second compression assembly (2) further comprises a second clamping rod (23), the second compression platform (21) is connected with the compression testing machine through the second clamping rod (23), and the second clamping rod (23) is collinear with the central symmetry axis of the material to be tested (5).
10. A method of using a test device for compression performance testing, wherein the test device is the test device of any one of claims 1-9, the method comprising the steps of:
clamping a portion of a material (5) to be measured with the first clamping block (31) and the second clamping block (32);
clamping another part of the material (5) to be tested with the third clamping block (41) and the fourth clamping block (44);
utilize first adjusting part (12) with second adjusting part (22) adjust the position of material to be measured (5) in thickness direction, utilize first spacing subassembly (33) with spacing subassembly (43) of second adjust the position of material to be measured (5) in width direction makes material to be measured (5) be in the centering position.
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