CN109668779B - Clamp device for measuring mechanical property of fastening belt flat plate sample by tensile test method - Google Patents
Clamp device for measuring mechanical property of fastening belt flat plate sample by tensile test method Download PDFInfo
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- CN109668779B CN109668779B CN201910118539.XA CN201910118539A CN109668779B CN 109668779 B CN109668779 B CN 109668779B CN 201910118539 A CN201910118539 A CN 201910118539A CN 109668779 B CN109668779 B CN 109668779B
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- fastening belt
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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
- 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
- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0423—Chucks, fixtures, jaws, holders or anvils using screws
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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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0482—Chucks, fixtures, jaws, holders or anvils comprising sensing means
Abstract
The invention discloses a fixture device for testing the mechanical property of a cylindrical frame fastening belt flat plate sample by a test method, which ensures that the fastening belt flat plate sample can be accurately placed and positioned in the test process, provides pretightening force for the sample, measures the pretightening force, enables the sample to transversely move, and increases the transverse force applied to the fastening belt flat plate sample along with the transverse movement of the sample. The device comprises a U-shaped frame A, U type frame B, a square-shaped outer frame A, a square-shaped outer frame B, 10 hexagon bolts, pre-tightening bolts, a measuring cylinder, a baffle, a guide pillar group A, a guide pillar group B, a spring disc group A, a spring disc group B, a positioning block A, a positioning block B, a positioning plate A, a positioning plate B, a fastening belt flat plate sample and a cylindrical frame sample. The device aims at the tensile test of the fastening belt flat plate sample, can ensure that the sample is accurately positioned in the test process, the sample can transversely move, the transverse force applied to the sample can be increased along with the transverse movement of the sample, and the device has simple structure and convenient operation.
Description
Technical Field
The invention relates to a clamp device for measuring the mechanical property of a fastening belt flat plate sample by a tensile test method, which ensures that a clamp can fix the position of the sample and provide pre-tightening force required by the test in the mechanical property measurement test process of the fastening belt flat plate sample, and the fastening belt flat plate sample can transversely move in the test process and is subjected to the action of increasing transverse force along with the increase of the transverse movement of the sample and the like. Belongs to the field of machine manufacturing.
Background
In the fields of aerospace and machinery, fastening belts are important for cylinder connection, and for fastening belts of large cylinders, the overall stress and load state is difficult to measure. Therefore, for a large fastening belt which is equivalent to a small fastening belt flat plate, the stress of the fastening belt flat plate sample is measured, and then the stress state of the cylinders connected through the fastening belt is analyzed. In the process of separating the test frame from the fastening belt, the fastening belt flat plate sample can move transversely, the transverse force applied to the sample can be increased along with the transverse movement of the sample, the clamp can provide accurate pretightening force for the sample, the integral stress and load state can be accurately measured, and the positioning of the sample is also an important factor of the test, so that higher requirements are provided for a clamping device for the test, and therefore, a set of clamp for measuring the mechanical property of the separation of the fastening belt flat plate sample and the cylindrical frame sample is designed at first glance.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a fixture for testing and measuring mechanical properties of a fastening belt flat plate sample and a cylindrical frame sample, which can ensure that the fixture provides accurate pre-tightening force to the sample during an experiment, the sample can move laterally, the lateral force applied to the fastening belt flat plate sample can increase along with the lateral movement of the sample, and the fixture can fix the sample at an accurate position.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a tensile test method survey clamp device of fastening area flat plate sample mechanical properties, the device includes U type frame A (101a), U type frame B (101B), square type outer frame A (102a), square type outer frame B (102B), hex bolts (103), pretension bolt (104), survey cylinder (105), baffle (106), guide pillar group A (107a), guide pillar group B (107B), spring disc group A (108a), spring disc group B (108B), locating piece A (109a), locating piece B (109B), locating plate A (110a), locating plate B (110B), fastening area flat plate sample A (111a), fastening area flat plate sample B (111B), cylinder frame sample A (112a) and cylinder frame sample B (112B).
The two U-shaped frames are respectively a U-shaped frame A (101a) and a U-shaped frame B, and the U-shaped frame A (101a) and the U-shaped frame B (101B) are connected to form a central layer frame of the sandwich type fixed frame;
the two square outer frames are respectively a square outer frame A (102a) and a square outer frame B (102B), and are connected with the U-shaped frame through ten M6 hexagon bolts (103); a square outer frame A (102a) and a square outer frame B (102B) are placed on two sides of the center of the device, U-shaped openings are opposite and vertical, the center frame edges of the two square outer frames are lower than the height of the U-shaped frames, and the two square outer frames and the two U-shaped frames are connected through ten M6 bolt hexagons (103) to form a sandwich type fixing frame with an inner groove. The pre-tightening bolt (104) penetrates through a threaded hole in the center of the outer side of the U-shaped frame A (101a), and the stud head of the pre-tightening bolt (104) is ground into a conical shape to be combined with the conical concave surface of the pre-tightening force measuring cylinder (105) arranged on the inner side of the U-shaped frame A (101 a).
The measuring cylinder (105) is connected with a baffle (106), two M10 round holes are symmetrically formed in two sides of the center of the baffle (106), and two guide posts A (107a) are mounted or movably adjusted through the two M10 round holes respectively. One end of each of the two guide posts A (107a) is respectively provided with thirteen pairs of spring discs A (108a) for providing pretightening force, and the other end is connected with the threaded hole of the positioning block A (109a) through threads.
The guide post B (107B) penetrates through two round holes of M10 at the central symmetry position of the outer side of the U-shaped frame B (101B), the other end of the guide post B (107B) is connected with the positioning block B (109B) through threads, and thirteen pairs of spring discs B (108B) are respectively placed on the guide post B (107B) to provide pretightening force.
The fastening belt flat plate test sample (111) is clamped into a 1mm groove on one side of the positioning block A (109a) and one side of the positioning block B (109B) respectively to be fixed and positioned, the transverse direction and the vertical direction of the test sample are fixed, the positioning plate A (110a) and the positioning plate B (110B) are placed on the front side and the rear side of the test sample respectively, and the positioning plates are used for limiting the position of the test sample in the longitudinal direction.
The cylindrical frame sample a (112a) was placed at the center of the fastening tape flat plate sample a (111 a). The cylindrical frame sample B (112B) was placed at the center of the fastening tape flat plate sample B (111B).
The device can guarantee that the dull and stereotyped sample of fastening area is accurate to be placed and can provide the pretightning force to the test piece in the test process to survey the pretightning force, the test piece can lateral shifting, and the lateral force that the fastening area sample received can increase along with the lateral shifting of sample.
The invention has the beneficial effects that:
according to the clamp device, in the process of a tensile test, the clamp can accurately fix and position the fastening belt flat plate sample, the clamp can provide pre-tightening force for the sample and measure the pre-tightening force, the sample can move transversely, and the transverse force applied to the fastening belt sample can be increased along with the transverse movement of the sample.
Drawings
FIG. 1 is a front view of the structure of the clamping device of the present invention.
FIG. 2 is a side view of the fixture structure of the present invention.
FIG. 3 is a schematic front view of the pretension applying and measuring device according to the present invention.
FIG. 4 is a schematic side view of the pretension applying and measuring device according to the present invention.
In the figure: 101 a-U-shaped frame A, 101B-U-shaped frame B, 102 a-square-shaped outer frame A, 102B-square-shaped outer frame B, 103-hexagon bolts, 104-pretightening bolts, 105-measuring cylinders, 106-baffle plates, 107 a-guide column group A, 107B-guide column B, 108 a-spring disc group A, 108B-spring disc group B, 109 a-positioning block A, 109B-positioning block B, 110 a-positioning block A, 110B-positioning block B, 111 a-fastening belt flat plate sample A, 111B-fastening belt flat plate sample B, 112 a-cylindrical frame sample A and 112B-cylindrical frame sample B.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The outer layer square frame and the two U-shaped frames are connected and installed through ten M6 bolts, the guide post A (107a) is in threaded connection with the positioning block, the disc spring groups are respectively penetrated on the guide posts, the guide post B (107B) at one side is penetrated through the round hole of the U-shaped frame, the guide post A (107) on the other side passes through two round holes of the baffle plate (106), the measuring cylinder (105) is connected with a central hole of the baffle plate (106), the conical head of the pre-tightening bolt (104) passes through the U-shaped frame A (101a) to be combined with the conical concave surface of the measuring cylinder (105), the fastening belt flat plate sample is placed through the positioning block A (109a) and the positioning plate, the sample is clamped into the clamping groove of the positioning block (109), the front side of the sample is attached to a positioning plate A (110a), the frame is used for mounting a flat plate sample with a fastening belt, a rear side baffle B (110B) is covered, an outer layer frame B (102B) is placed, and the front side baffle B and the rear side baffle B are connected through ten M6 hexagon bolts (103). The pretightening force applying process comprises the following steps that a strain gauge is connected with a pretightening force measuring sensor, a pretightening bolt (104) is screwed, a bolt cone head moves to be combined with a cone concave surface of a pretightening force measuring cylinder (105), two guide columns penetrate through a baffle (106) to move a compressed disc spring group, the disc spring group applies compressive force to a positioning block, the positioning block is used for providing pretightening force for a fastening belt flat plate sample, two sides of the fastening belt sample are of a symmetrical structure, the pretightening force is applied to two sides simultaneously, the pretightening force is controlled through measuring cylinder strain on the strain gauge to reach a preset.
In the test process, the clamp device can enable the fastening belt flat plate sample to be accurately placed and positioned and can provide pretightening force for the test piece, the pretightening force is measured, the test piece can move transversely, and the transverse force applied to the fastening belt sample can be increased along with the transverse movement of the test piece.
Although the embodiments of the present invention have been disclosed, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. The utility model provides a tensile test method surveys clamp device of fastening band flat plate specimen mechanical properties which characterized in that: the device comprises a U-shaped frame A (101a), a U-shaped frame B (101B), a square-shaped outer frame A (102a), a square-shaped outer frame B (102B), a hexagon bolt (103), a pre-tightening bolt (104), a measuring cylinder (105), a baffle (106), a guide pillar A (107a), a guide pillar B (107B), a spring disc group A (108a), a spring disc group B (108B), a positioning block A (109a), a positioning block B (109B), a positioning plate A (110a), a positioning plate B (110B), a fastening belt flat plate sample A (111a), a fastening belt flat plate sample B (111B), a cylindrical frame sample A (112a) and a cylindrical frame sample B (112B);
the two U-shaped frames are respectively a U-shaped frame A (101a) and a U-shaped frame B, and the U-shaped frame A (101a) and the U-shaped frame B (101B) are connected to form a central layer frame of the sandwich type fixed frame;
the two square outer frames are respectively a square outer frame A (102a) and a square outer frame B (102B), and are connected with the U-shaped frame through ten M6 hexagon bolts (103); the square outer frame A (102a) and the square outer frame B (102B) are placed on two sides of the center of the device, U-shaped openings are opposite and vertical, the center frame edges of the two square outer frames are lower than the height of the U-shaped frames, and the two square outer frames and the two U-shaped frames are connected through ten M6 bolt hexagons (103) to form a sandwich type fixed frame with an inner groove; the pre-tightening bolt (104) penetrates through a threaded hole in the center of the outer side of the U-shaped frame A (101a), and the stud head of the pre-tightening bolt (104) is ground into a conical shape to be combined with the conical concave surface of the pre-tightening force measuring cylinder (105) arranged on the inner side of the U-shaped frame A (101 a);
the measuring cylinder (105) is connected with the baffle (106), two M10 round holes are symmetrically formed in two sides of the center of the baffle (106), and two guide posts A (107a) are respectively installed or movably adjusted through the two M10 round holes; one end of each of the two guide posts A (107a) is respectively provided with thirteen pairs of spring discs A (108a) for providing pretightening force, and the other end of each guide post A is connected with a threaded hole of the positioning block A (109a) through threads;
the guide post B (107B) penetrates through two round holes of M10 at the central symmetry position of the outer side of the U-shaped frame B (101B), the other end of the guide post B (107B) is connected with the positioning block B (109B) through threads, and thirteen pairs of spring discs B (108B) are respectively placed on the guide post B (107B) to provide pretightening force;
a fastening belt flat plate sample A (111a) is clamped into a 1mm groove on one side of a positioning block A (109a) for fixing and positioning, a fastening belt flat plate sample B (111B) is clamped into a 1mm groove on one side of a positioning block B (109B) for fixing and positioning, the transverse direction and the vertical direction of the fastening belt flat plate sample are fixed, a positioning plate A (110a) and a positioning plate B (110B) are respectively placed on the front side and the rear side of the fastening belt flat plate sample, and the positioning plate A (110a) and the positioning plate B (110B) are respectively used for limiting the position of the fastening belt flat plate sample in the longitudinal direction;
a cylindrical frame sample A (112a) is placed at the center of a fastening belt flat plate sample A (111 a); the cylindrical frame sample B (112B) was placed at the center of the fastening tape flat plate sample B (111B).
2. The fixture device for measuring the mechanical property of the flat plate sample of the fastening belt by the tensile test method according to claim 1, wherein: the device can guarantee that the dull and stereotyped sample of fastening area is accurate to be placed and can provide the pretightning force to the test piece in the test process to survey the pretightning force, the test piece can lateral shifting, and the lateral force that the fastening area sample received can increase along with the lateral shifting of sample.
3. The fixture device for measuring the mechanical property of the flat plate sample of the fastening belt by the tensile test method according to claim 1, wherein: the outer layer square frame and the two U-shaped frames are connected and installed through ten M6 bolts, the guide post A (107a) is in threaded connection with the positioning block, the disc spring groups are respectively penetrated on the guide posts, the guide post B (107B) at one side is penetrated through the round hole of the U-shaped frame, the guide post A (107) on the other side passes through two round holes of the baffle plate (106), the measuring cylinder (105) is connected with a central hole of the baffle plate (106), the conical head of the pre-tightening bolt (104) passes through the U-shaped frame A (101a) to be combined with the conical concave surface of the measuring cylinder (105), the fastening belt flat plate sample is placed through the positioning block A (109a) and the positioning plate, the sample is clamped into the clamping groove of the positioning block (109), the front side of the sample is attached to a positioning plate A (110a), a frame is used for fastening a flat plate sample, a rear side baffle B (110B) is covered, an outer layer frame B (102B) is placed, and the front side baffle B, the rear side baffle B and the outer layer frame B are connected through ten M6 hexagon bolts (103); the pretightening force applying process comprises the following steps that a strain gauge is connected with a pretightening force measuring sensor, a pretightening bolt (104) is screwed, a bolt cone head moves to be combined with a cone concave surface of a pretightening force measuring cylinder (105), two guide columns penetrate through a baffle (106) to move a compressed disc spring group, the disc spring group applies compressive force to a positioning block, the positioning block is used for providing pretightening force for a fastening belt flat plate sample, two sides of the fastening belt sample are of a symmetrical structure, the pretightening force is applied to two sides simultaneously, the pretightening force is controlled through measuring cylinder strain on the strain gauge to reach a preset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118539.XA CN109668779B (en) | 2019-02-16 | 2019-02-16 | Clamp device for measuring mechanical property of fastening belt flat plate sample by tensile test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118539.XA CN109668779B (en) | 2019-02-16 | 2019-02-16 | Clamp device for measuring mechanical property of fastening belt flat plate sample by tensile test method |
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| Publication Number | Publication Date |
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| CN109668779A CN109668779A (en) | 2019-04-23 |
| CN109668779B true CN109668779B (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910118539.XA Active CN109668779B (en) | 2019-02-16 | 2019-02-16 | Clamp device for measuring mechanical property of fastening belt flat plate sample by tensile test method |
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| CN112763310B (en) * | 2020-11-06 | 2023-01-03 | 北京工业大学 | Clamping device for tensile test of tungsten wire rope for single crystal furnace |
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2019
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| DE3840261A1 (en) * | 1988-11-30 | 1990-05-31 | Deutsche Forsch Luft Raumfahrt | Loading device |
| CN101113944A (en) * | 2007-07-20 | 2008-01-30 | 北京工业大学 | Thin sheets pre-tighten positioning clamping device |
| CN102574283A (en) * | 2009-10-20 | 2012-07-11 | 伊利诺斯工具制品有限公司 | Dual side acting hydraulic grips synchronization |
| CN101957293A (en) * | 2010-09-17 | 2011-01-26 | 西安三环科技开发总公司 | Combined loading expansion test device for entity expansion pipe |
| CN202748268U (en) * | 2012-06-07 | 2013-02-20 | 浙江吉利汽车研究院有限公司杭州分公司 | Compression clamp capable of accurately measuring compression quantity |
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