CN113933160A - Biaxial tension test machine - Google Patents
Biaxial tension test machine Download PDFInfo
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- CN113933160A CN113933160A CN202111267883.9A CN202111267883A CN113933160A CN 113933160 A CN113933160 A CN 113933160A CN 202111267883 A CN202111267883 A CN 202111267883A CN 113933160 A CN113933160 A CN 113933160A
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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
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0254—Biaxial, the forces being applied along two normal axes of the specimen
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—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
Abstract
The invention provides a biaxial tension testing machine, which is characterized in that a product to be tested is placed on a testing station arranged on a supporting frame in the working process. So that each clamping component clamps and fixes one edge of the product to be tested. In each testing mechanism, the stretching assembly is in driving connection with the clamping assembly, and the stretching assembly drives the clamping assembly to move away from the testing station so as to stretch one side of a product to be tested. The sensing component in the same testing mechanism is connected with the other clamping component and used for sensing the pulling force applied by the clamping component, namely the pulling force born by the product to be tested. The biaxial tension testing machine comprises two testing mechanisms which are perpendicular to each other, and the two testing mechanisms can simultaneously perform tension test experiments in two directions on a product to be tested. The biaxial tension tester is small in size and exquisite in design, and meets the requirement of simultaneously carrying out multi-directional tension test on products to be tested on the market.
Description
Technical Field
The invention relates to the field of tensile test, in particular to a biaxial tensile tester.
Background
The tensile testing machine is also called a material tensile testing machine and a universal tensile strength testing machine, and is a new generation of mechanical detection equipment integrating computer control, automatic measurement, data acquisition, screen display and test result processing. The microcomputer controlled electrohydraulic servo universal tester integrates electrohydraulic servo automatic control, automatic measurement, data acquisition, screen display and test result processing, takes the oil cylinder underlying host as a platform, is provided with a precision oil pump, an electrohydraulic servo valve and a PC servo controller, realizes multi-channel closed-loop control, completes the functions of full-automatic control, automatic measurement and the like of the test process, has the characteristics of good specialty, high reliability, simple and easy upgrading and the like, and can be continuously, fully and perfectly along with the development of the test control technology and the change of the test standard of the tester. In the mechanics of materials experiments, the most common equipment is a universal material testing machine, which can perform tensile, compressive, shear, bending and other tests. There are various types of universal material testing machines. The universal material testing machine is divided into a hydraulic universal material testing machine and an electronic universal material testing machine.
However, the hydraulic universal material testing machine can perform material mechanical property tests such as tensile, compression, shearing, bending and the like. The electronic universal material testing machine is a mechanical universal testing machine which adopts electronic technology to control and test. Besides the functions of a common universal tester, the universal tester also has wider and adjustable stress application speed and force measurement range, higher deformation measurement precision and fast dynamic reaction speed, and can display data in real time and draw a tensile curve or other test curves with enough magnification ratio. However, the conventional tensile testing machine has a complex structure, is heavy and cannot perform tensile testing on materials in multiple directions.
Disclosure of Invention
Therefore, it is necessary to provide a biaxial tensile testing machine aiming at the technical problems that the conventional tensile testing machine has a complex structure, is heavy in volume and cannot perform tensile testing on a material in multiple directions.
A biaxial tension testing machine, comprising: the device comprises a support frame and two testing mechanisms; the two testing mechanisms are arranged vertically to each other; the two testing mechanisms are arranged on the supporting frame; the support frame is provided with a test station for placing a product to be tested;
the testing mechanism comprises a stretching assembly, a sensing assembly and two clamping assemblies; the two clamping assemblies are respectively arranged at two sides of the testing station and are used for respectively clamping and fixing two sides of a product to be tested; the stretching assembly and the induction assembly are both connected with the support frame; the stretching assembly is in driving connection with the clamping assembly and drives the clamping assembly to move close to or far away from the test station; the sensing assembly is connected with the other clamping assembly and is used for sensing the pulling force applied by the clamping assembly.
In one embodiment, the clamping assembly comprises a fixed block, a clamping piece and an adjusting screw rod; the fixed block is provided with an accommodating cavity, and the cross sectional area of the accommodating cavity is uniformly increased from the surface of the fixed block to the inside of the fixed block; one end of the fixed block, which is back to the accommodating cavity, is provided with a threaded hole, and the threaded hole is communicated with the accommodating cavity; the threaded hole is matched with the adjusting screw rod, the adjusting screw rod is inserted into the threaded hole and is in threaded connection with the fixed block, the clamping piece is matched with the accommodating cavity, and at least part of the clamping piece is accommodated in the accommodating cavity; the clamping part comprises a positioning block and two clamping plates, the clamping plates are symmetrically arranged and two ends of the clamping plates are connected with one surface of the positioning block, the cross-sectional area of each clamping plate is close to one end of the positioning block to the end far away from the positioning block, the end of each clamping plate is evenly reduced, and the end of each adjusting screw is abutted to the positioning block.
In one embodiment, the surfaces of the two clamping plates, which are close to each other, are provided with anti-slip lines.
In one embodiment, limiting plates are arranged at the upper end and the lower end of the fixing block, and the clamping piece is limited in the accommodating cavity by the two limiting plates.
In one embodiment, the stretching assembly comprises a driving member, a driving connecting plate, a driving plate and a plurality of driving rods, the driving member is connected with the supporting frame through the driving connecting plate, the driving member is in driving connection with the driving rods through the driving plate, and one end, far away from the driving plate, of each driving rod is connected with one fixing block.
In one embodiment, the sensing assembly comprises a positioning plate, a pressure sensor, a pressing plate and a plurality of stretching rods; the positioning plate is connected with the support frame, a plurality of sliding holes are formed in the positioning plate, the sliding holes are matched with the stretching rods, and each stretching rod is inserted into one sliding hole and is connected with the positioning plate in a sliding mode; the extrusion plate is connected with the fixed block through the stretching rods; the pressure sensor is arranged on one surface, facing the extrusion plate, of the positioning plate.
In one embodiment, the sensing assembly further comprises a stress block, the stress block is matched with the pressure sensor, and the pressure sensor is connected with the positioning plate through the stress block.
In one embodiment, the testing mechanism further comprises a tension correcting rod, a positioning sliding hole is formed in the fixing block, the positioning sliding hole is matched with the tension correcting rod, one end of the tension correcting rod is inserted into one positioning sliding hole and is connected with one fixing block in a sliding mode, and the other end of the tension correcting rod is inserted into one positioning sliding hole and is connected with the other fixing block in a sliding mode.
In one embodiment, a plurality of rolling wheels are uniformly arranged at the bottom of the supporting frame.
In one embodiment, the rolling wheels are universal wheels.
In the working process of the biaxial tension testing machine, a product to be tested is placed on a testing station arranged on the supporting frame. So that each clamping component clamps and fixes one edge of the product to be tested. In each testing mechanism, the stretching assembly is in driving connection with the clamping assembly, and the stretching assembly drives the clamping assembly to move away from the testing station so as to stretch one side of a product to be tested. The sensing component in the same testing mechanism is connected with the other clamping component and used for sensing the pulling force applied by the clamping component, namely the pulling force born by the product to be tested. The biaxial tension testing machine comprises two testing mechanisms which are perpendicular to each other, and the two testing mechanisms can simultaneously perform tension test experiments in two directions on a product to be tested. The biaxial tension tester is small in size and exquisite in design, and meets the requirement of simultaneously carrying out multi-directional tension test on products to be tested on the market.
Drawings
FIG. 1 is a schematic diagram of a biaxial tension tester in one embodiment;
FIG. 2 is a schematic view of the biaxial tension tester in the embodiment of FIG. 1 from another perspective;
FIG. 3 is a schematic view of an exemplary disassembled biaxial tension tester;
FIG. 4 is a schematic view of a disassembled structure of a part of the biaxial tension tester in the embodiment of FIG. 3;
FIG. 5 is a schematic diagram of a partially enlarged structure of the biaxial tension tester in the embodiment of FIG. 3.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 to 4 together, the present invention provides a biaxial tension testing machine 10, wherein the biaxial tension testing machine 10 includes a supporting frame 100 and two testing mechanisms 200. The two test mechanisms 200 are arranged perpendicular to each other. In this embodiment, the two test mechanisms 200 are arranged perpendicular to each other. Both testing mechanisms 200 are disposed on the support stand 100. The support frame 100 is provided with a test station for placing a product to be tested. Further, the test station is disposed at an intersection of the two test mechanisms 200. In this embodiment, a plurality of rolling wheels 110 are uniformly disposed at the bottom of the supporting frame 100, and further, the rolling wheels 110 are universal wheels. The rolling wheels 110 disposed at the bottom of the supporting frame 100 can improve the moving convenience of the biaxial tension tester 10.
The testing mechanism 200 includes a tension assembly 210, a sensing assembly 220, and two clamping assemblies 230. The two clamping assemblies 230 are respectively arranged at two sides of the testing station and used for respectively clamping and fixing two sides of the product to be tested. The stretching assembly 210 and the sensing assembly 220 are connected to the supporting frame 100. The stretching assembly 210 is in driving connection with a clamping assembly 230, and the stretching assembly 210 drives the clamping assembly 230 to move close to or away from the testing station. Sensing assembly 220 is coupled to another clamping assembly 230 and is configured to sense a pulling force applied by clamping assembly 230.
In the working process of the biaxial tension tester 10, a product to be tested is placed on a testing station arranged on the supporting frame 100. So that each clamping assembly 230 clamps and fixes one side of the product to be tested. In each testing mechanism 200, the stretching assembly 210 is drivingly connected to a clamping assembly 230, and the stretching assembly 210 drives the clamping assembly 230 to move away from the testing station, so as to stretch one side of the product to be tested. The sensing component 220 in the same testing mechanism 200 is connected to another clamping component 230 and is used for sensing the pulling force applied by the clamping component 230, i.e. the pulling force born by the product to be tested. The biaxial tension tester 10 comprises two testing mechanisms 200, the two testing mechanisms 200 are perpendicular to each other, and the two testing mechanisms 200 can simultaneously perform tension test experiments in two directions on a product to be tested. Or a single testing mechanism 200 can perform a tensile test experiment in one direction on the product to be tested. The biaxial tension tester 10 is small in size and exquisite in design, and meets the requirement of simultaneously carrying out multi-directional tension test on products to be tested in the market.
It should be noted that the two testing mechanisms 200 must be disposed perpendicular to each other, that is, the pulling forces generated by the pulling components 210 in the two testing mechanisms 200 must be perpendicular to each other, and if the testing mechanisms 200 are not disposed perpendicular to each other, and the pulling forces generated by the pulling components 210 in the two testing mechanisms 200 are not perpendicular to each other, when the two testing mechanisms 200 simultaneously perform two-directional tensile testing experiments on a product to be tested, the pulling component 210 in one testing mechanism 200 will generate a certain pulling force on the sensing component 220 in the other testing mechanism 200, which may cause an error in the measurement of the sensing component 220, thereby causing a measurement defect of the biaxial tensile testing machine 10.
In order to increase the stability of the clamping assembly 230 for clamping and fixing the product to be tested, please refer to fig. 3 to 4 together, in one embodiment, the clamping assembly 230 includes a fixing block 231, a clamping member 232, and an adjusting screw 233. The fixing block 231 is provided with a containing cavity 201, and the cross-sectional area of the containing cavity 201 is uniformly increased from the surface of the fixing block 231 to the inside of the fixing block 231. One end of the fixing block 231, which faces away from the accommodating cavity 201, is provided with a threaded hole 202, and the threaded hole 202 is communicated with the accommodating cavity 201. The threaded hole 202 is matched with the adjusting screw 233, the adjusting screw 233 is inserted into the threaded hole 202 and is in threaded connection with the fixing block 231, the clamping piece 232 is matched with the accommodating cavity 201, and at least part of the clamping piece 232 is accommodated in the accommodating cavity 201. Clamping piece 232 includes locating piece 234 and two splint 235, and two splint 235 symmetry sets up, and the one end of two splint 235 all is connected with the one side of locating piece 234, and the cross-sectional area of splint 235 evenly reduces to the one end of keeping away from locating piece 234 from the one end that is close to locating piece 234, adjusting screw 233's one end and locating piece 234 butt. When the clamping assembly 230 is used for clamping and fixing a to-be-tested product, one edge of the to-be-tested product is inserted between the two clamping plates 235, and then the positioning block 234 is driven to move in the accommodating cavity 201 by rotating the adjusting screw 233, due to the structure of the accommodating cavity 201 and the specific shapes of the two clamping plates 235, when the positioning block 234 moves towards the direction of the clamping plates 235, the extrusion force of the fixing block 231 on the two clamping plates 235 is larger, so that the stability of clamping and fixing the to-be-tested product is higher. In this embodiment, the one side that two splint 235 are close to each other all is provided with anti-skidding line to further increase splint 235's non-slip properties, thereby increase the frictional force between splint 235 and the product that awaits measuring, with the fixed stability of increase to the product centre gripping that awaits measuring. Further, in this embodiment, the upper and lower both ends of fixed block 231 all set up limiting plate 236, and two limiting plates 236 inject holder 232 in accommodation chamber 201 to avoid holder 232 to drop from accommodation chamber 201, increased the job stabilization nature of centre gripping subassembly 230. Thus, the stability of the clamping assembly 230 for clamping and fixing the product to be tested is increased.
In order to increase the working stability of the stretching assembly 210 for stretching the product to be tested, please refer to fig. 1 to 3, in one embodiment, the stretching assembly 210 includes a driving member 211, a driving connecting plate 212, a driving plate 213 and a plurality of driving rods 214, the driving member 211 is connected to the supporting frame 100 through the driving connecting plate 212, the driving member 211 is connected to each driving rod 214 through the driving plate 213, and one end of each driving rod 214 away from the driving plate 213 is connected to a fixing block 231. In this embodiment, the driving member 211 is a hydraulic cylinder. In another embodiment, the driver 211 is a pneumatic cylinder. The driving member 211 is in driving connection with a fixing block 231 through the driving plate 213 and each driving rod 214, and the driving member 211 drives a fixing block 231 to move close to or far away from the testing station through the driving plate 213 and each driving rod 214, so as to perform a tensile test on a product to be tested. Thus, the working stability of the stretching assembly 210 for stretching the product to be tested is increased.
In order to increase the stability of the sensing assembly 220 in the measurement of the product to be tested, please refer to fig. 1 to 3 together, in one embodiment, the sensing assembly 220 includes a positioning plate 221, a pressure sensor 222, a pressing plate 223 and a plurality of stretching rods 224. The positioning plate 221 is connected to the supporting frame 100, a plurality of sliding holes 203 are formed in the positioning plate 221, the sliding holes 203 are matched with the stretching rods 224, and each stretching rod 224 is inserted into one of the sliding holes 203 and slidably connected to the positioning plate 221. The pressing plate 223 is connected to a fixing block 231 through each stretching rod 224. The pressure sensor 222 is disposed on a surface of the positioning plate 221 facing the pressing plate 223. The driving member 211 drives a fixing block 231 to move away from the testing station through the driving plate 213 and each driving rod 214 to perform a tensile test on the product to be tested, and under the action of a tensile force, the other fixing block 231 drives the pressing plate 223 to move close to the pressure sensor 222 through each stretching rod 224 and presses the pressure sensor 222 in combination with the positioning plate 221. The pressure measured by the pressure sensor 222 is the tensile force applied to the product under test. Further, in this embodiment, the sensing assembly 220 further includes a force-receiving block 225, the force-receiving block 225 is adapted to the pressure sensor 222, and further, the force-receiving block 225 is an iron block. The pressure sensor 222 is connected to the positioning plate 221 through the force-receiving block 225 to further improve the measurement accuracy of the pressure sensor 222. Therefore, the stability of the measurement work of the induction component 220 on the product to be tested is increased.
In order to improve the working accuracy of the biaxial stretching testing machine 10, please refer to fig. 1 to 4, in one embodiment, the testing mechanism 200 further includes a tension correcting rod 240, the fixing block 231 is provided with a positioning sliding hole 204, the positioning sliding hole 204 is adapted to the tension correcting rod 240, one end of the tension correcting rod 240 is inserted into the positioning sliding hole 204 and slidably connected to one fixing block 231, and the other end of the tension correcting rod 240 is inserted into the positioning sliding hole 204 and slidably connected to the other fixing block 231. The tension correcting rod 240 enables the two clamping assemblies 230 in the testing mechanism 200 to move on the same straight line, so that the transmission of the tension is more accurate, and the tension applied to the product to be tested by the sensing assembly 220 is more accurate. In this embodiment, the testing mechanism 200 includes a plurality of tension correcting rods 240, and correspondingly, a plurality of positioning sliding holes 204 are formed in the fixing block 231, and each tension correcting rod 240 is correspondingly inserted into one positioning sliding hole 204 and slidably connected to the fixing block 231, so as to further improve the testing accuracy of the tension applied to the product to be tested by the sensing assembly 220. Further, one end of the tension correcting rod 240 is connected to the fixing block 231, and the other end is connected to the driving link plate 212, so as to increase the structural stability of the testing mechanism 200. In this manner, each tension correcting rod 240 improves the working accuracy of the biaxial tension testing machine 10.
In order to implement the biaxial tension tester 10 to test the hardness of the product to be tested, in this embodiment, please refer to fig. 3, the biaxial tension tester 10 further includes an indenter 300, the indenter 300 is connected to the supporting frame 100, and the indenter 300 is disposed right above the testing station. The indenter 300 allows hardness testing of the product at the test station. Specifically, before indentation appearance 300 carries out the test of hardness to the product that awaits measuring on the test station, two accredited testing organization 200 work simultaneously in order to fix the product that awaits measuring on the test station, avoid when indentation appearance 300 carries out the hardness test to the product that awaits measuring on the test station, the product that awaits measuring sends and removes. Thus, the indenter 300 realizes the hardness test of the biaxial tension tester 10 on the product to be tested.
In order to ensure that the two testing mechanisms 200 are disposed perpendicular to each other, please refer to fig. 5, four positioning assemblies 120 are disposed on the supporting frame 100, and the four positioning assemblies 120 are disposed on the supporting frame 100 in a pairwise symmetric manner. The positioning assembly 120 includes a connecting plate 121, two support rods 122, and two receiving wheels 123. The connecting plates 121 are connected to the supporting frame 100, and the connecting plates 121 of two symmetrically disposed positioning assemblies 120 are disposed in parallel and perpendicular to the connecting plates 121 of the other two symmetrically disposed positioning assemblies 120. The two support rods 122 are respectively disposed at two ends of the connection plate 121 and are both vertically connected to the connection plate 121. One end of each supporting rod 122, which is far away from the connecting plate 121, is rotatably connected with a receiving wheel 123, an annular limiting groove 101 is formed in the receiving wheel 123, the annular limiting groove 101 is matched with the tension correcting rod 240, and the tension correcting rod 240 is partially inserted into the annular limiting groove 101 and is slidably connected with the receiving wheel 123. In this manner, the four positioning assemblies 120 define the position of the tension leveling rod 240 in the two testing mechanisms 200, thereby ensuring that the two testing mechanisms 200 are disposed perpendicular to each other, thereby ensuring the operating accuracy of the biaxial tension testing machine 10.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A biaxial tension testing machine, comprising: the device comprises a support frame and two testing mechanisms; the two testing mechanisms are arranged vertically to each other; the two testing mechanisms are arranged on the supporting frame; the support frame is provided with a test station for placing a product to be tested;
the testing mechanism comprises a stretching assembly, a sensing assembly and two clamping assemblies; the two clamping assemblies are respectively arranged at two sides of the testing station and are used for respectively clamping and fixing two sides of a product to be tested; the stretching assembly and the induction assembly are both connected with the support frame; the stretching assembly is in driving connection with the clamping assembly and drives the clamping assembly to move close to or far away from the test station; the sensing assembly is connected with the other clamping assembly and is used for sensing the pulling force applied by the clamping assembly.
2. The biaxial tension testing machine as set forth in claim 1, wherein the clamping assembly comprises a fixed block, a clamping member, and an adjusting screw; the fixed block is provided with an accommodating cavity, and the cross sectional area of the accommodating cavity is uniformly increased from the surface of the fixed block to the inside of the fixed block; one end of the fixed block, which is back to the accommodating cavity, is provided with a threaded hole, and the threaded hole is communicated with the accommodating cavity; the threaded hole is matched with the adjusting screw rod, the adjusting screw rod is inserted into the threaded hole and is in threaded connection with the fixed block, the clamping piece is matched with the accommodating cavity, and at least part of the clamping piece is accommodated in the accommodating cavity; the clamping part comprises a positioning block and two clamping plates, the clamping plates are symmetrically arranged and two ends of the clamping plates are connected with one surface of the positioning block, the cross-sectional area of each clamping plate is close to one end of the positioning block to the end far away from the positioning block, the end of each clamping plate is evenly reduced, and the end of each adjusting screw is abutted to the positioning block.
3. The biaxial tension testing machine as set forth in claim 2, wherein the side of each of the two clamping plates adjacent to each other is provided with an anti-slip pattern.
4. The biaxial stretching testing machine of claim 2, wherein the upper end and the lower end of the fixing block are provided with limiting plates, and the two limiting plates limit the clamping piece in the accommodating cavity.
5. The biaxial stretching testing machine as claimed in claim 2, wherein the stretching assembly includes a driving member, a driving connecting plate, a driving plate, and a plurality of driving rods, the driving member is connected to the supporting frame via the driving connecting plate, the driving member is connected to each driving rod via the driving plate, and an end of each driving rod away from the driving plate is connected to a fixing block.
6. The biaxial tension testing machine as set forth in claim 5, wherein the sensing assembly comprises a positioning plate, a pressure sensor, a pressing plate and a plurality of stretching rods; the positioning plate is connected with the support frame, a plurality of sliding holes are formed in the positioning plate, the sliding holes are matched with the stretching rods, and each stretching rod is inserted into one sliding hole and is connected with the positioning plate in a sliding mode; the extrusion plate is connected with the fixed block through the stretching rods; the pressure sensor is arranged on one surface, facing the extrusion plate, of the positioning plate.
7. The biaxial stretching testing machine of claim 6, wherein the sensing assembly further comprises a force-bearing block, the force-bearing block is adapted to the pressure sensor, and the pressure sensor is connected to the positioning plate through the force-bearing block.
8. The biaxial stretching testing machine of claim 7, wherein the testing mechanism further comprises a tension correcting rod, the fixing block is provided with a positioning slide hole, the positioning slide hole is matched with the tension correcting rod, one end of the tension correcting rod is inserted into one positioning slide hole and is slidably connected with one fixing block, and the other end of the tension correcting rod is inserted into one positioning slide hole and is slidably connected with the other fixing block.
9. The biaxial stretching testing machine as set forth in claim 1, wherein a plurality of rolling wheels are uniformly arranged on the bottom of the supporting frame.
10. The biaxial tension testing machine as set forth in claim 9, wherein the rolling wheels are gimbaled wheels.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111267883.9A CN113933160A (en) | 2021-10-29 | 2021-10-29 | Biaxial tension test machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111267883.9A CN113933160A (en) | 2021-10-29 | 2021-10-29 | Biaxial tension test machine |
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| CN113933160A true CN113933160A (en) | 2022-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116380632A (en) * | 2023-06-05 | 2023-07-04 | 江苏冠创医疗科技有限公司 | Binding clip toughness testing device and method of ligature clip applying device |
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2021
- 2021-10-29 CN CN202111267883.9A patent/CN113933160A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116380632A (en) * | 2023-06-05 | 2023-07-04 | 江苏冠创医疗科技有限公司 | Binding clip toughness testing device and method of ligature clip applying device |
| CN116380632B (en) * | 2023-06-05 | 2023-08-11 | 江苏冠创医疗科技有限公司 | Binding clip toughness testing device and method of ligature clip applying device |
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Application publication date: 20220114 |