CN110567800A - Stretching clamp - Google Patents

Stretching clamp Download PDF

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Publication number
CN110567800A
CN110567800A CN201910757059.8A CN201910757059A CN110567800A CN 110567800 A CN110567800 A CN 110567800A CN 201910757059 A CN201910757059 A CN 201910757059A CN 110567800 A CN110567800 A CN 110567800A
Authority
CN
China
Prior art keywords
base
pressing plate
fixing groove
positioning hole
clamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910757059.8A
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Chinese (zh)
Inventor
梁梓铭
魏昕
谢盛
屈海艳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201910757059.8A priority Critical patent/CN110567800A/en
Publication of CN110567800A publication Critical patent/CN110567800A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/04Chucks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention provides a stretching clamp. The stretching clamp comprises a pressing plate and a base, wherein the pressing plate is detachably connected with the base, a fixing groove is formed in the side face, opposite to the pressing plate, of the base, and a positioning hole is formed in the position, corresponding to the fixing groove, of the pressing plate. The invention can fix a right-angle or T-shaped sample on the clamp, and carry out a tensile experiment on a universal testing machine.

Description

Stretching clamp
Technical Field
the invention relates to the technical field of tensile testing, in particular to a tensile clamp.
Background
The metal sample piece with better toughness is difficult to be subjected to a bending failure experiment to detect the mechanical property of a welding seam in detection, and can only be detected by a tensile fracture method, such as stainless steel. The method for the tensile property of metal mechanics mainly combines clamping in the vertical direction of a universal testing machine to coaxially stretch a flat plate sample piece, is only suitable for the situation that the stress of the sample piece can be on the same axis, but the sample piece with a right-angle or T-shaped structure cannot be stressed and detected on the same axis, and needs a special clamp to meet the requirement when the universal testing machine is not suitable for the clamp. The application discloses a stretching clamp for a magnesium alloy rod, which is disclosed in China published patent No. CN208476664U, published date 2019, 2 month and 5 days, and comprises an upper clamp and a lower clamp; the upper clamp and the lower clamp are both connected to a tensile testing machine; go up anchor clamps, lower anchor clamps and be used for the magnesium alloy bar test piece that the centre gripping has the step, this patent application is through hanging body, support ring adaptation magnesium alloy bar of not unidimensional under changing, uses in a flexible way, practices thrift the cost, but this patent application is not applicable to the sample structure and is right angle type or T type, can' T carry out tensile experiment to the sample of this kind of peculiar shape.
Disclosure of Invention
The invention aims to overcome the defect that the conventional stretching clamp cannot perform a stretching experiment on a rectangular or T-shaped sample structure on a universal testing machine, and provides a stretching clamp. The invention can fix a right-angle or T-shaped sample on the clamp, and carry out a tensile experiment on a universal testing machine.
In order to solve the technical problems, the invention adopts the technical scheme that: the pressing plate is detachably connected with the base, a fixing groove is formed in the side face, opposite to the pressing plate, of the base, and a positioning hole is formed in the position, corresponding to the fixing groove, of the pressing plate. When the right-angle sample piece is stretched, one right-angled end of the sample piece penetrates through the positioning hole of the pressing plate, the other right-angled end of the sample piece is placed in the fixing groove of the base, the pressing plate and the base are connected, and the whole sample piece is fixed in the clamp.
Further, the base comprises a clamping part and a loading part, the clamping part and the loading part are perpendicular to each other, and the fixing groove is located on the loading part of the base. When the tensile test is carried out, the loading part of the base is used for placing a sample piece, and the lower chuck of the universal testing machine fixedly clamps the clamping part of the base.
Furthermore, one end of the fixing groove extends to the edge of the base loading part, and the other end of the fixing groove and the center line of the positioning hole are located on the same plane. One end of the fixing groove extends out of the edge of the object carrying part of the base, so that the overlong right-angle edge of the right-angle sample piece placed in the groove can extend out of the edge of the object carrying part of the base. The other end of the fixing groove and the center line of the positioning hole are on the same plane, so that right-angle fixing and clamping of a right-angle or T-shaped sample piece in the stretching clamp can be guaranteed.
Furthermore, the center line of the positioning hole and the center line of the base clamping part are on the same axis. The thickness of the clamping part of the base is 25mm-30 mm. The lower chuck of the universal testing machine clamps the clamping part of the base, so the thickness range of the clamping part of the base needs to meet the clamping range of the lower chuck of the universal testing machine, the clamping working range of the lower chuck of the universal testing machine is 25mm-30mm, and the thickness of the clamping part of the base is 25mm-30 mm. The central line of the positioning hole and the central line of the clamping part of the base are on the same axis, so that the clamped sample structure can receive the maximum tensile force of the universal testing machine in the stress direction of the tensile clamp.
Furthermore, bolts are respectively arranged at four corners of the base loading part and the pressing plate, and the pressing plate and the base are detachably connected through the bolts. Tensile anchor clamps four corners all is equipped with the bolt fastening for when tensile experiment, whole anchor clamps atress is stable, and bolted connection makes the clamp plate can dismantle with the base, makes things convenient for the installation of sample structure, can also change the clamp plate of locating hole size difference or the base that the fixed slot size is different according to the size of the sample structure of difference.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the positioning hole is formed in the pressing plate, the fixing groove matched with the positioning hole is formed in the base, so that a right-angle or T-shaped sample can be fixed on the clamp, and a tensile experiment is carried out on a universal testing machine; the pressing plate and the base are detachably connected, so that the pressing plate with the positioning holes of different sizes and the base with the fixing grooves of different sizes can be matched for use when facing sample pieces of different sizes.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The graphic symbols are illustrated as follows:
1-bolt, 2-spring washer, 3-pressure plate, 4-base object carrying part, 5-nut, 6-positioning hole, 7-fixing groove and 8-base clamping part.
Detailed Description
The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
As shown in fig. 1, a first embodiment of the present invention is a stretching clamp, which includes a pressing plate 3 and a base, wherein the pressing plate 3 is detachably connected to the base through a bolt 1, a fixing groove 7 is disposed on a side surface of the base opposite to the pressing plate 3, and a positioning hole 6 is disposed on the pressing plate at a position corresponding to the fixing groove 7.
The base comprises a clamping part 8 and an object carrying part 4, the upper surface of the base is located on the object carrying part 4 of the base, one end of a fixing groove 7 extends to the edge of the object carrying part 4 of the base, and the other end of the fixing groove 7 and the center line of the positioning hole 6 are located on the same horizontal plane. The thickness of the base clamping portion 8 is 27 mm.
In addition, the base loading part 4 is connected with the four corners of the pressing plate 3 through bolts 1, in the embodiment, the bolts 1, the spring washers 2 and the nuts 5 are connected in sequence to fix the pressing plate 3 and the base.
The working principle of the embodiment is as follows: one of the right-angle type samples passes through the positioning hole 6 of the pressure plate 3, the other right-angle side of the right-angle type samples is placed in the fixing groove 7 of the base object carrying part 4, the part with the overlong right-angle side directly extends out of the opening of the edge of the base object carrying part 4 from the fixing groove 7, the pressure plate 3 and the base used bolt 1 which are used for containing the right-angle type samples are well fixed and pressed by the spring gasket 2 and the nut 5. The centre of the lower chuck clamping base clamping part 8 of the universal testing machine, the right-angle side of the positioning hole 6 of the pressing plate 3 is worn out by the upper chuck clamping right-angle type sample piece of the universal testing machine, the central line of the base clamping part 8 and the central line of the positioning hole 6 are located on the same axis, the right-angle side of the positioning hole 6 of the pressing plate 3 is worn out by the right-angle type sample piece and the central line of the lower chuck of the universal testing machine are located on the same axis, and the right-angle type sample piece can be in the stretching direction of the.
the second embodiment of the present invention is similar to the first embodiment of the present invention, except that in this embodiment, the thickness of the vertical portion 8 of the base is 29mm, and the present invention is used to stretch T-shaped prototypes. The vertical edge of the T-shaped sample piece penetrates out of the positioning hole 6 of the pressing plate 3, the horizontal edge of the T-shaped sample piece is placed on the base loading part 4, and the fixing groove 7 on the base does not play a role in fixing the horizontal edge of the T-shaped sample piece. In this embodiment, the bolt 1, the spring washer 2 and the nut 5 are connected in sequence to clamp the pressing plate 3, the base and the T-shaped sample fixed between the pressing plate and the base. The lower chuck of the universal testing machine clamps the middle of the base clamping part 8, the upper chuck of the universal testing machine clamps the T-shaped sample and penetrates through the vertical edge of the positioning hole 6 of the pressing plate 3, the universal testing machine is started, and the T-shaped sample is subjected to a tensile test.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (6)

1. The utility model provides a tensile anchor clamps, includes clamp plate and base, the clamp plate with the base can be dismantled and be connected its characterized in that: the base is provided with a fixing groove on the side face opposite to the pressing plate, and the pressing plate is provided with a positioning hole at the position corresponding to the fixing groove.
2. A stretch clip as claimed in claim 1, wherein: the base comprises a clamping part and a loading part, the clamping part and the loading part are perpendicular to each other, and the fixing groove is located in the loading part of the base.
3. A stretch clip as claimed in claim 2, wherein: one end of the fixing groove extends to the edge of the base loading part, and the other end of the fixing groove and the center line of the positioning hole are located on the same plane.
4. A stretch clip as claimed in claim 3, wherein: the center line of the positioning hole and the center line of the base clamping part are on the same axis.
5. A stretch clip as claimed in claim 2, wherein: the thickness of the base clamping part is 25mm-30 mm.
6. A stretch clip as claimed in claim 2, wherein: bolts are respectively arranged at four corners of the base loading part and the pressing plate, and the pressing plate and the base are detachably connected through the bolts.
CN201910757059.8A 2019-08-16 2019-08-16 Stretching clamp Pending CN110567800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910757059.8A CN110567800A (en) 2019-08-16 2019-08-16 Stretching clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910757059.8A CN110567800A (en) 2019-08-16 2019-08-16 Stretching clamp

Publications (1)

Publication Number Publication Date
CN110567800A true CN110567800A (en) 2019-12-13

Family

ID=68775429

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910757059.8A Pending CN110567800A (en) 2019-08-16 2019-08-16 Stretching clamp

Country Status (1)

Country Link
CN (1) CN110567800A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080005344U (en) * 2007-05-09 2008-11-13 한국철도시설공단 A holder of a Universal testing machine easy to insert and take out.
CN106053217A (en) * 2016-05-12 2016-10-26 上海工程技术大学 Multifunctional T type sample stretching and fatigue experiment clamp
CN206248469U (en) * 2016-12-15 2017-06-13 通标标准技术服务(青岛)有限公司 T-shaped sample stretching tool
CN109946151A (en) * 2019-03-11 2019-06-28 江苏城工建设科技有限公司 A kind of stretching detection combination device for pre-buried channel flow
CN110031313A (en) * 2019-05-27 2019-07-19 中国核动力研究设计院 For evaluating the experimental rig and method of T-type structure mechanical property
CN211085911U (en) * 2019-08-16 2020-07-24 广东工业大学 Stretching clamp

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080005344U (en) * 2007-05-09 2008-11-13 한국철도시설공단 A holder of a Universal testing machine easy to insert and take out.
CN106053217A (en) * 2016-05-12 2016-10-26 上海工程技术大学 Multifunctional T type sample stretching and fatigue experiment clamp
CN206248469U (en) * 2016-12-15 2017-06-13 通标标准技术服务(青岛)有限公司 T-shaped sample stretching tool
CN109946151A (en) * 2019-03-11 2019-06-28 江苏城工建设科技有限公司 A kind of stretching detection combination device for pre-buried channel flow
CN110031313A (en) * 2019-05-27 2019-07-19 中国核动力研究设计院 For evaluating the experimental rig and method of T-type structure mechanical property
CN211085911U (en) * 2019-08-16 2020-07-24 广东工业大学 Stretching clamp

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