CN113358474A - Digital display type testing device for compressive stress strain of flexible material - Google Patents

Digital display type testing device for compressive stress strain of flexible material Download PDF

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Publication number
CN113358474A
CN113358474A CN202110708749.1A CN202110708749A CN113358474A CN 113358474 A CN113358474 A CN 113358474A CN 202110708749 A CN202110708749 A CN 202110708749A CN 113358474 A CN113358474 A CN 113358474A
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China
Prior art keywords
supporting
plate
supporting plate
groups
column
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CN202110708749.1A
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Chinese (zh)
Inventor
李瑞锋
王文娟
钱亚婷
杨李影
胡桂敏
杜少棠
祖显文
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Huangshan University
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Huangshan University
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Priority to CN202110708749.1A priority Critical patent/CN113358474A/en
Publication of CN113358474A publication Critical patent/CN113358474A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0003—Steady
    • 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
    • G01N2203/0075—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
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0266—Cylindrical specimens
    • 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
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • 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
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle

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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

A digital display testing device for compressive stress strain of a flexible material comprises a base, a sliding plate, a first supporting column, a second supporting column, a fifth supporting plate, a first supporting rod and a second supporting rod; the sliding plate is arranged at the bottom of the second supporting plate in a sliding manner, and the first supporting plate is provided with an air cylinder; the first supporting column is arranged on the sliding plate, and the bottom of the blind hole is provided with a pressure sensor; the second support column is inserted into the blind hole, and a third support plate is arranged on the outer peripheral wall of the second support column; a linear displacement sensor is arranged on the fifth supporting plate, and a fourth supporting plate is arranged at the top of the measuring slide block; the first support rod and the four groups of second support rods are horizontally and transversely arranged on the third support plate, and the four groups of second support rods are uniformly distributed around the first support rod along the circumference; the base is provided with a controller, and the second supporting plate is provided with a display screen. According to the invention, the strain value and the pressure value of the sample can be displayed in real time, the compression performance of the sample can be conveniently obtained, and the sample and the second support column can be coaxial through the axis adjusting assembly.

Description

Digital display type testing device for compressive stress strain of flexible material
Technical Field
The invention relates to the technical field of mechanical property testing, in particular to a digital display testing device for compressive stress strain of a flexible material.
Background
The existing flexible material compressive stress strain testing device cannot observe the change of detection data in real time, and a sample needs to be taken out to measure the strain amount in the test process, but the sample is taken out to easily cause trace resilience of the flexible material, so that the true strain value is difficult to measure, certain influence is caused on the accuracy of experimental data, and the repeatability of the detection effect is not good.
The utility model discloses a chinese utility model patent publication number is a flexible material compressive stress strain digital display testing arrangement that CN204964302U proposed, need not take out the sample measurement among the experimentation, need not change the sample, and the undulant factor of influence data is less, has guaranteed accuracy, the repeatability of device. But piston, top and thrust piston piece self have weight, and self gravity easily influences the pressure value when stepping down and live the sample, makes the demonstration pressure value be less than actual pressure value to influence the test result, the sample need keep coaxial with the pressure head before the pressurized simultaneously, only leans on the people to feel to put on the test bench, is difficult to guarantee coaxial placing, also can cause the influence to the test result.
Disclosure of Invention
Objects of the invention
In order to solve the technical problems in the background art, the invention provides the digital display testing device for the compressive stress strain of the flexible material, which can display the strain value and the pressure value of the sample in real time, is convenient for directly calculating the relation between the stress and the strain of the sample to obtain the compressive property of the sample, does not need to take down the sample for measuring the strain, ensures the accuracy of test data, enables the samples with different diameters to be coaxial with the second supporting column through the axis adjusting assembly, and further improves the testing accuracy.
(II) technical scheme
On one hand, the invention provides a digital display testing device for the compressive stress strain of a flexible material, which comprises a base, a sliding plate, a first supporting column, a second supporting column, a fifth supporting plate, a first supporting rod, a second supporting rod, a sixth supporting plate and a test sample, wherein the sliding plate is arranged on the base;
a first supporting plate is arranged on the base, and a second supporting plate is horizontally arranged at the top of the first supporting plate; the sliding plate is vertically and transversely arranged at the bottom of the second supporting plate in a sliding manner, and the first supporting plate is provided with a cylinder for pushing the sliding plate to slide; the first support column is horizontally and transversely arranged on the right side surface of the sliding plate, a blind hole is formed in the right side surface of the first support column, and a pressure sensor is arranged at the bottom of the blind hole; the second supporting column is inserted into the blind hole in a matched mode, the second supporting column is not in contact with the pressure sensor, and a third supporting plate is vertically arranged on the outer peripheral wall of the second supporting column; the fifth supporting plate is arranged on the base, a horizontal and transverse linear displacement sensor is arranged on the right side surface of the fifth supporting plate, a measuring slide block is arranged on a measuring rod on the linear displacement sensor in a sliding mode, a fourth supporting plate is arranged on the top of the measuring slide block, a through hole is formed in the fourth supporting plate, and the fourth supporting plate is connected with the base in a sliding mode through a plurality of groups of third supporting rods at the bottom; the first support rod and the four groups of second support rods are horizontally and transversely arranged on the third support plate, the first support rod and the second support rods penetrate through the through holes, the first support rod and the through holes are coaxially arranged, the second support rods are connected with the third support plate in a sliding mode, the sliding direction is close to or far away from the first support rod, the four groups of second support rods are uniformly distributed around the first support rod along the circumference, and a power assembly for driving the four groups of second support rods to synchronously slide is arranged at the left end of the first support rod; the sixth supporting plate is arranged on the base, and a limiting assembly which is used for placing a sample and slides along the vertical direction is arranged on the sixth supporting plate; the base is provided with a controller, and the second supporting plate is provided with a display screen.
Preferably, the power assembly comprises a power device, a rotating shaft, a cross plate and a first arc-shaped plate; the power device is arranged at the left end of the first support rod and is in transmission connection with the rotating shaft; the cross plate is arranged at the left end of the rotating shaft; the first arc-shaped plates are arranged in four groups, the four groups of first arc-shaped plates are respectively arranged between two adjacent plates on the cross plate, and the four groups of second supporting rods are respectively contacted with the inner peripheral surfaces of the four groups of first arc-shaped plates; the controller is connected with the power device in a control mode.
Preferably, the limiting assembly comprises a box body, a second arc-shaped plate, an elastic rope, a seventh supporting plate and a screw rod; the box body is arranged on the end face, facing the second supporting column, of the sixth supporting plate, the top of the box body is open, and a square hole for a sample to pass through is formed in the end face, facing the second supporting column, of the box body; the second arc-shaped plate is arranged on the inner wall of the box body in a sliding mode along the vertical direction, and the inner peripheral surface of the second arc-shaped plate faces upwards; two ends of the elastic rope are respectively tied at two ends of the top of the second arc-shaped plate, and the sample is positioned between the elastic rope and the inner peripheral wall of the second arc-shaped plate; the seventh supporting plate is horizontally arranged on the peripheral wall of the second arc-shaped plate, and a threaded hole matched with the screw rod is formed in the seventh supporting plate; the screw rod is vertically and rotationally arranged on the inner side of the bottom of the box body, the screw rod penetrates through the threaded hole, and the top of the screw rod is provided with a knob.
Preferably, the device further comprises an axis adjusting assembly; the axis adjusting assembly comprises a second sliding plate, an eighth supporting plate, an indicating rod and a spring; the second sliding plate is arranged at the bottom of the second supporting plate in a sliding mode along the transverse direction and is vertically arranged, and a through hole for the first supporting column to penetrate through is formed in the second sliding plate; the eighth support plates are arranged on the outer wall of the second support column along the diameter direction of the second support column, a plurality of groups of the eighth support plates are arranged, inclined guide holes are formed in the eighth support plates, and openings are formed in the left side surface and the right side surface of each guide hole of each eighth support plate; the indicating rods penetrate through the guide holes in a matched mode, the left ends of the indicating rods are in contact with the second sliding plate, the right ends of the indicating rods are located on the outer side of the second supporting column, and the indicating rods are provided with a plurality of groups; spring one end is connected with the eighth backup pad, and the spring other end is connected with the second slide, and the spring level transversely sets up.
Preferably, the second support plate is provided with a transverse strip-shaped groove, and the strip-shaped groove forms openings on the upper end face and the lower end face of the second support plate; the top of the second sliding plate is provided with a vertical rod, and the vertical rod penetrates through the strip-shaped groove.
Preferably, the spring sets up the multiunit, and multiunit spring is connected with multiunit eighth backup pad respectively.
Preferably, the multiple groups of eighth support plates are uniformly distributed along the circumference by taking the axis of the second support column as the center.
On the other hand, the invention provides a testing method of the digital display testing device for the compressive stress strain of the flexible material, which comprises the following steps: s1, placing the cylindrical sample on the second arc-shaped plate and pressing the cylindrical sample tightly by an elastic rope; s2, the vertical rod is held and pulled rightwards, the indicating rods move rightwards and downwards along the guide holes, and the right ends of the multiple groups of indicating rods are close to each other; s3, rotating the knob to adjust the upper and lower positions of the second arc-shaped plate, enabling the outer peripheral wall of the sample to be in contact with the multiple groups of indicating rods, loosening the vertical rods, and pushing the second sliding plate to the left side by the spring; s4, starting the air cylinder to push the sliding plate, the first supporting column and the second supporting column to move rightwards; s5, the second supporting column contacts the sample and stops moving rightwards, the first supporting column continues moving, the second supporting column contacts the pressure sensor, the pressure sensor transmits a signal to the controller, and the controller displays the pressure value of the pressure sensor on the display screen; s6, the controller controls the power device to start, the cross plate drives the first arc-shaped plate to rotate, the second supporting rods are pushed to move outwards, and the four groups of second supporting rods move outwards and abut against the wall of the through hole; s7, the second supporting column begins to extrude the sample, the sample begins to deform, the fourth supporting plate drives the measuring slide block to move, the linear displacement sensor transmits displacement data to the controller, and the controller displays the displacement value on the display screen.
The technical scheme of the invention has the following beneficial technical effects: can show the strain value and the pressure value of sample in real time, be convenient for directly calculate the stress and the relation of meeting an emergency of sample, reachs the compressibility of sample, need not take off the sample and measure the strain, guaranteed test data's accuracy, and enable the sample of different diameters coaxial with the second support column through axis adjustment subassembly, further improved the test accuracy.
Drawings
Fig. 1 is a schematic structural diagram of a digital test device for compressive stress strain of a flexible material according to the present invention.
Fig. 2 is a front cross-sectional view of a digital testing device for compressive stress strain of a flexible material according to the present invention.
Fig. 3 and 4 are side cross-sectional views of the device for digital testing of compressive stress strain of flexible material according to the present invention.
Fig. 5 is an enlarged schematic view of a place a of the digital display testing apparatus for compressive stress strain of flexible material according to the present invention.
Reference numerals: 1. a base; 2. a first support plate; 3. a second support plate; 4. a slide plate; 5. a cylinder; 6. a first support column; 7. blind holes; 8. a pressure sensor; 9. a second support column; 10. a third support plate; 11. a fifth support plate; 12. a linear displacement sensor; 13. a measuring rod; 14. a measuring slide block; 15. a fourth support plate; 16. a through hole; 17. a third support bar; 18. a first support bar; 19. a second support bar; 20. a power plant; 21. a rotating shaft; 22. a cross plate; 23. a first arc-shaped plate; 24. a sixth support plate; 25. a sample; 26. a box body; 27. a second arc-shaped plate; 28. an elastic cord; 29. a seventh support plate; 30. a screw; 31. a knob; 32. a controller; 33. a display screen; 34. a second slide plate; 35. an eighth support plate; 36. a guide hole; 37. an indication lever; 38. a spring; 39. a vertical rod; 40. a strip-shaped groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1 to 5, in one aspect, the digital display testing apparatus for compressive stress and strain of a flexible material according to the present invention includes a base 1, a sliding plate 4, a first supporting column 6, a second supporting column 9, a fifth supporting plate 11, a first supporting rod 18, a second supporting rod 19, a sixth supporting plate 24, and a test sample 25;
a first supporting plate 2 is arranged on the base 1, and a second supporting plate 3 is horizontally arranged at the top of the first supporting plate 2; the sliding plate 4 is vertically and transversely arranged at the bottom of the second supporting plate 3 in a sliding manner, and the first supporting plate 2 is provided with a cylinder 5 for pushing the sliding plate 4 to slide; the first support column 6 is horizontally and transversely arranged on the right side surface of the sliding plate 4, a blind hole 7 is arranged on the right side surface of the first support column 6, and a pressure sensor 8 is arranged at the bottom of the blind hole 7; the second supporting column 9 is inserted into the blind hole 7 in a matched mode, the second supporting column 9 is not in contact with the pressure sensor 8, and a third supporting plate 10 is vertically arranged on the outer peripheral wall of the second supporting column 9; the fifth supporting plate 11 is arranged on the base 1, the right side surface of the fifth supporting plate 11 is provided with a horizontal and transverse linear displacement sensor 12, a measuring slide block 14 is arranged on a measuring rod 13 on the linear displacement sensor 12 in a sliding manner, the top of the measuring slide block 14 is provided with a fourth supporting plate 15, the fourth supporting plate 15 is provided with a through hole 16, and the fourth supporting plate 15 is connected with the base 1 in a sliding manner through a plurality of groups of third supporting rods 17 at the bottom; the first support rods 18 and the four groups of second support rods 19 are horizontally and transversely arranged on the third support plate 10, the first support rods 18 and the second support rods 19 penetrate through the through holes 16, the first support rods 18 and the through holes 16 are coaxially arranged, the second support rods 19 are connected with the third support plate 10 in a sliding mode, the sliding direction is close to or far away from the first support rods 18, the four groups of second support rods 19 are uniformly distributed around the first support rods 18 along the circumference, and the left ends of the first support rods 18 are provided with power assemblies for driving the four groups of second support rods 19 to synchronously slide; the sixth supporting plate 24 is arranged on the base 1, and a limiting component which is used for placing the sample 25 and slides along the vertical direction is arranged on the sixth supporting plate 24; the base 1 is provided with a controller 32, and the second support plate 3 is provided with a display screen 33; the controller 32 is electrically connected with the display screen 33, the controller 32 is in signal transmission connection with the pressure sensor 8 and the linear displacement sensor 12, and the controller 32 is in control connection with the cylinder 5 and the power assembly.
The working principle is as follows: placing a cylindrical sample 25 on a limiting component, adjusting the upper position and the lower position of the limiting component to enable the axis of the sample 25 to coincide with the axis of a second supporting column 9, starting an air cylinder 5 to push a sliding plate 4, the first supporting column 6 and the second supporting column 9 to move rightwards, enabling the second supporting column 9 to contact the sample 25 and stop moving rightwards, enabling the first supporting column 6 to continue moving, enabling the second supporting column 9 to contact a pressure sensor 8, enabling the pressure sensor 8 to transmit signals to a controller 32, enabling the controller 32 to display the pressure value of the pressure sensor 8 on a display screen 33, enabling a controller 32 to control a power component to start, pushing the second supporting rods 19 to move outwards, enabling four groups of second supporting rods 19 to move outwards to abut against the hole wall of a through hole 16, enabling the second supporting column 9 to start to extrude the sample 25, enabling the sample 25 to start to deform, enabling a fourth supporting plate 15 to drive a measuring slider 14 to move, enabling a linear displacement sensor 12 to transmit displacement data to the controller 32, the controller 32 displays the displacement values on the display screen 33. In the invention, the strain value and the pressure value of the sample 25 can be displayed in real time, the relation between the stress and the strain of the sample 25 can be conveniently and directly calculated, the compression performance of the sample 25 is obtained, the sample 25 does not need to be taken down for strain measurement, and the accuracy of test data is ensured.
In an alternative embodiment, the power assembly includes a power device 20, a rotating shaft 21, a cross plate 22, and a first arcuate plate 23; the power device 20 is arranged at the left end of the first support rod 18, and the power device 20 is in transmission connection with the rotating shaft 21; the cross plate 22 is arranged at the left end of the rotating shaft 21; the first arc-shaped plates 23 are arranged in four groups, the four groups of first arc-shaped plates 23 are respectively arranged between two adjacent plates on the cross plate 22, and the four groups of second support rods 19 are respectively contacted with the inner peripheral surfaces of the four groups of first arc-shaped plates 23; the controller 32 is in control connection with the power device 20; the power device 20 drives the cross plate 22 to rotate, the cross plate 22 drives the first arc-shaped plate 23 to rotate, the first arc-shaped plate 23 pushes the second support rod 19 to extrude on the hole wall of the through hole 16, and then the second support rod 19 can drive the measuring slide block 14 to move.
In an alternative embodiment, the limiting assembly comprises a box 26, a second arc-shaped plate 27, an elastic rope 28, a seventh supporting plate 29 and a screw 30; the box body 26 is arranged on the end face, facing the second supporting column 9, of the sixth supporting plate 24, the top of the box body 26 is open, and a square hole for the sample 25 to pass through is formed in the end face, facing the second supporting column 9, of the box body 26; the second arc-shaped plate 27 is arranged on the inner wall of the box body 26 in a sliding mode along the vertical direction, and the inner circumferential surface of the second arc-shaped plate 27 faces upwards; two ends of the elastic rope 28 are tied to two ends of the top of the second arc-shaped plate 27 respectively, and the sample 25 is positioned between the elastic rope 28 and the inner peripheral wall of the second arc-shaped plate 27; the seventh supporting plate 29 is horizontally arranged on the outer peripheral wall of the second arc-shaped plate 27, and a threaded hole matched with the screw 30 is formed in the seventh supporting plate 29; the screw rod 30 is vertically and rotatably arranged on the inner side of the bottom of the box body 26, the screw rod 30 penetrates through the threaded hole, and the top of the screw rod 30 is provided with a knob 31; the rotation knob 31 drives the screw 30 to rotate, and then the seventh supporting plate 29 drives the second arc plate 27 to move up and down.
In an optional embodiment, the device further comprises an axis adjusting assembly; the axis adjustment assembly includes a second slide plate 34, an eighth support plate 35, an indication lever 37 and a spring 38; the second sliding plate 34 is arranged at the bottom of the second supporting plate 3 in a sliding manner along the transverse direction, the second sliding plate 34 is vertically arranged, and a through hole for the first supporting column 6 to pass through is formed in the second sliding plate 34; the eighth support plates 35 are arranged on the outer wall of the second support column 9 along the diameter direction of the second support column 9, a plurality of groups of the eighth support plates 35 are arranged, inclined guide holes 36 are formed in the eighth support plates 35, and openings are formed in the left side surface and the right side surface of each guide hole 36 of each eighth support plate 35; the indicating rod 37 is matched and penetrates through the guide hole 36, the left end of the indicating rod 37 is in contact with the second sliding plate 34, the right end of the indicating rod 37 is positioned on the outer side of the second supporting column 9, and multiple groups of the indicating rods 37 are arranged; one end of the spring 38 is connected with the eighth supporting plate 35, the other end of the spring 38 is connected with the second sliding plate 34, and the spring 38 is horizontally and transversely arranged; pulling second slide 34 rightwards, the pilot lever 37 is followed guide hole 36 and is moved to the lower right side, and multiunit pilot lever 37 right-hand member is close to each other, rotates knob 31 and adjusts the upper and lower position of second arc 27, makes sample 25 periphery wall and multiunit pilot lever 37 all contact, can make the axis of sample 25 and the axis coincidence of second support column 9, further improves the test accuracy, loosens second slide 34, and second slide 34 is pushed to the left side by spring 38.
In an alternative embodiment, a transverse strip-shaped groove 40 is arranged on the second support plate 3, and the strip-shaped groove 40 forms an opening on both the upper end surface and the lower end surface of the second support plate 3; a vertical rod 39 is arranged at the top of the second sliding plate 34, and the vertical rod 39 penetrates through the strip-shaped groove 40; the vertical rod 39 is grasped to facilitate pulling the second slide plate 34.
In an alternative embodiment, a plurality of sets of springs 38 are provided, and the plurality of sets of springs 38 are respectively connected to the plurality of sets of eighth supporting plates 35.
In an alternative embodiment, the sets of eighth support plates 35 are evenly distributed circumferentially about the axis of the second support column 9.
On the other hand, the testing method of the digital display testing device for the compressive stress strain of the flexible material, provided by the invention, comprises the following steps of:
s1, placing the cylindrical test sample 25 on the second arc-shaped plate 27 and pressing the cylindrical test sample with the elastic rope 28;
s2, the vertical rod 39 is held and pulled rightwards, the indicating rods 37 move rightwards and downwards along the guide holes 36, and the right ends of the groups of indicating rods 37 approach each other;
s3, rotating the knob 31 to adjust the up-down position of the second arc-shaped plate 27, so that the outer peripheral wall of the sample 25 is contacted with the plurality of groups of indicating rods 37, loosening the vertical rod 39, and pushing the second sliding plate 34 to the left side by the spring 38;
s4, starting the air cylinder 5 to push the sliding plate 4, the first supporting column 6 and the second supporting column 9 to move rightwards;
s5, the second supporting column 9 contacts the sample 25 and stops moving to the right, while the first supporting column 6 continues moving, the second supporting column 9 contacts the pressure sensor 8, the pressure sensor 8 transmits a signal to the controller 32, and the controller 32 displays the pressure value of the pressure sensor 8 on the display screen 33;
s6, the controller 32 controls the power device 20 to start, the cross plate 22 drives the first arc-shaped plate 23 to rotate, the second support rods 19 are pushed to move outwards, and the four groups of second support rods 19 move outwards and abut against the hole wall of the through hole 16;
s7, the second supporting column 9 starts to extrude the sample 25, the sample 25 starts to deform, the fourth supporting plate 15 drives the measuring slide block 14 to move, the linear displacement sensor 12 transmits displacement data to the controller 32, and the controller 32 displays the displacement value on the display screen 33.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (8)

1. A digital display testing device for compressive stress strain of a flexible material is characterized by comprising a base (1), a sliding plate (4), a first supporting column (6), a second supporting column (9), a fifth supporting plate (11), a first supporting rod (18), a second supporting rod (19), a sixth supporting plate (24) and a test sample (25);
a first supporting plate (2) is arranged on the base (1), and a second supporting plate (3) is horizontally arranged at the top of the first supporting plate (2); the sliding plate (4) is vertically and transversely arranged at the bottom of the second supporting plate (3) in a sliding manner, and the first supporting plate (2) is provided with a cylinder (5) for pushing the sliding plate (4) to slide; the first supporting column (6) is horizontally and transversely arranged on the right side surface of the sliding plate (4), a blind hole (7) is arranged on the right side surface of the first supporting column (6), and a pressure sensor (8) is arranged at the bottom of the blind hole (7); the second supporting column (9) is inserted into the blind hole (7) in a matched mode, the second supporting column (9) is not in contact with the pressure sensor (8), and a third supporting plate (10) is vertically arranged on the outer peripheral wall of the second supporting column (9); the fifth supporting plate (11) is arranged on the base (1), a horizontal and transverse linear displacement sensor (12) is arranged on the right side surface of the fifth supporting plate (11), a measuring slide block (14) is arranged on a measuring rod (13) on the linear displacement sensor (12) in a sliding mode, a fourth supporting plate (15) is arranged on the top of the measuring slide block (14), a through hole (16) is formed in the fourth supporting plate (15), and the fourth supporting plate (15) is connected with the base (1) in a sliding mode through a plurality of groups of third supporting rods (17) at the bottom; the first supporting rods (18) and the four groups of second supporting rods (19) are horizontally and transversely arranged on the third supporting plate (10), the first supporting rods (18) and the second supporting rods (19) penetrate through the through holes (16), the first supporting rods (18) and the through holes (16) are coaxially arranged, the second supporting rods (19) are connected with the third supporting plate (10) in a sliding mode, the sliding direction is close to or far away from the first supporting rods (18), the four groups of second supporting rods (19) are uniformly distributed around the first supporting rods (18) along the circumference, and the left end of the first supporting rods (18) is provided with a power assembly for driving the four groups of second supporting rods (19) to synchronously slide; the sixth supporting plate (24) is arranged on the base (1), and a limiting component which is used for placing a test sample (25) and slides along the vertical direction is arranged on the sixth supporting plate (24); the base (1) is provided with a controller (32), and the second supporting plate (3) is provided with a display screen (33).
2. The digital display testing device for the compressive stress strain of the flexible material according to claim 1, wherein the power assembly comprises a power device (20), a rotating shaft (21), a cross plate (22) and a first arc plate (23); the power device (20) is arranged at the left end of the first supporting rod (18), and the power device (20) is in transmission connection with the rotating shaft (21); the cross plate (22) is arranged at the left end of the rotating shaft (21); the first arc-shaped plates (23) are arranged in four groups, the four groups of first arc-shaped plates (23) are respectively arranged between two adjacent plates on the cross plate (22), and the four groups of second supporting rods (19) are respectively contacted with the inner peripheral surfaces of the four groups of first arc-shaped plates (23); the controller (32) is in control connection with the power device (20).
3. The digital display testing device for the compressive stress strain of the flexible material according to claim 1, wherein the limiting component comprises a box body (26), a second arc-shaped plate (27), an elastic rope (28), a seventh supporting plate (29) and a screw rod (30); the box body (26) is arranged on the end face, facing the second supporting column (9), of the sixth supporting plate (24), the top of the box body (26) is open, and a square hole for the sample (25) to pass through is formed in the end face, facing the second supporting column (9), of the box body (26); the second arc-shaped plate (27) is arranged on the inner wall of the box body (26) in a sliding mode along the vertical direction, and the inner circumferential surface of the second arc-shaped plate (27) faces upwards; two ends of the elastic rope (28) are tied to two ends of the top of the second arc-shaped plate (27) respectively, and the sample (25) is positioned between the elastic rope (28) and the inner peripheral wall of the second arc-shaped plate (27); the seventh supporting plate (29) is horizontally arranged on the peripheral wall of the second arc-shaped plate (27), and a threaded hole matched with the screw rod (30) is formed in the seventh supporting plate (29); the screw rod (30) is vertically and rotationally arranged on the inner side of the bottom of the box body (26), the screw rod (30) penetrates through the threaded hole, and the top of the screw rod (30) is provided with a knob (31).
4. The digital display testing device for the compressive stress strain of the flexible material according to claim 1, further comprising an axis adjusting component; the axis adjusting assembly comprises a second sliding plate (34), an eighth supporting plate (35), an indicating rod (37) and a spring (38); the second sliding plate (34) is arranged at the bottom of the second supporting plate (3) in a sliding mode along the transverse direction, the second sliding plate (34) is arranged vertically, and a through hole for the first supporting column (6) to penetrate through is formed in the second sliding plate (34); the eighth support plates (35) are arranged on the outer wall of the second support column (9) along the diameter direction of the second support column (9), a plurality of groups of eighth support plates (35) are arranged, inclined guide holes (36) are formed in the eighth support plates (35), and openings are formed in the left side surface and the right side surface of each guide hole (36) of each eighth support plate (35); the indicating rod (37) penetrates through the guide hole (36) in a matched mode, the left end of the indicating rod (37) is in contact with the second sliding plate (34), the right end of the indicating rod (37) is located on the outer side of the second supporting column (9), and multiple groups of indicating rods (37) are arranged; one end of the spring (38) is connected with the eighth supporting plate (35), the other end of the spring (38) is connected with the second sliding plate (34), and the spring (38) is horizontally and transversely arranged.
5. The digital display testing device for the compressive stress strain of the flexible material according to claim 4, wherein the second support plate (3) is provided with a transverse strip-shaped groove (40), and the strip-shaped groove (40) forms an opening on the upper end surface and the lower end surface of the second support plate (3); the top of the second sliding plate (34) is provided with a vertical rod (39), and the vertical rod (39) penetrates through the strip-shaped groove (40).
6. The digital display testing device for the compressive stress strain of the flexible material as claimed in claim 4, wherein a plurality of sets of the springs (38) are provided, and the plurality of sets of the springs (38) are respectively connected with a plurality of sets of the eighth supporting plates (35).
7. The digital display testing device for the compressive stress strain of the flexible material as claimed in claim 4, wherein the plurality of groups of eighth supporting plates (35) are uniformly distributed along the circumference with the axis of the second supporting column (9) as the center.
8. A testing method of the digital display device for the compressive stress strain of the flexible material according to any one of claims 1 to 7, comprising the following steps:
s1, placing the cylindrical test sample (25) on the second arc-shaped plate (27) and pressing the cylindrical test sample tightly by using the elastic rope (28);
s2, the vertical rod (39) is held and pulled rightwards, the indicating rods (37) move rightwards and downwards along the guide holes (36), and the right ends of the groups of indicating rods (37) are close to each other;
s3, rotating a knob (31) to adjust the vertical position of a second arc-shaped plate (27), so that the peripheral wall of the sample (25) is in contact with a plurality of groups of indicating rods (37), loosening a vertical rod (39), and pushing the second sliding plate (34) to the left side by a spring (38);
s4, starting the air cylinder (5) to push the sliding plate (4), the first supporting column (6) and the second supporting column (9) to move rightwards;
s5, the second supporting column (9) contacts the sample (25) and stops moving to the right, the first supporting column (6) continues moving, the second supporting column (9) contacts the pressure sensor (8), the pressure sensor (8) transmits a signal to the controller (32), and the controller (32) displays the pressure value of the pressure sensor (8) on the display screen (33);
s6, the controller (32) controls the power device (20) to start, the cross plate (22) drives the first arc-shaped plate (23) to rotate, the second supporting rods (19) are pushed to move outwards, and the four groups of second supporting rods (19) move outwards to abut against the hole wall of the through hole (16);
s7, the second supporting column (9) begins to extrude the sample (25), the sample (25) begins to deform, the fourth supporting plate (15) drives the measuring slide block (14) to move, the linear displacement sensor (12) transmits displacement data to the controller (32), and the controller (32) displays the displacement value on the display screen (33).
CN202110708749.1A 2021-06-25 2021-06-25 Digital display type testing device for compressive stress strain of flexible material Withdrawn CN113358474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110708749.1A CN113358474A (en) 2021-06-25 2021-06-25 Digital display type testing device for compressive stress strain of flexible material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110708749.1A CN113358474A (en) 2021-06-25 2021-06-25 Digital display type testing device for compressive stress strain of flexible material

Publications (1)

Publication Number Publication Date
CN113358474A true CN113358474A (en) 2021-09-07

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Application Number Title Priority Date Filing Date
CN202110708749.1A Withdrawn CN113358474A (en) 2021-06-25 2021-06-25 Digital display type testing device for compressive stress strain of flexible material

Country Status (1)

Country Link
CN (1) CN113358474A (en)

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Application publication date: 20210907