CN202693413U - Small-sized tube toroidal stretching fixture - Google Patents
Small-sized tube toroidal stretching fixture Download PDFInfo
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- CN202693413U CN202693413U CN 201220324256 CN201220324256U CN202693413U CN 202693413 U CN202693413 U CN 202693413U CN 201220324256 CN201220324256 CN 201220324256 CN 201220324256 U CN201220324256 U CN 201220324256U CN 202693413 U CN202693413 U CN 202693413U
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Abstract
The utility model discloses a mall-sized tube toroidal stretching fixture. The mall-sized tube toroidal stretching fixture comprises two clamping bodies which are arranged in vertical symmetry mode and are the same in shape, and pin rods in pin joint with the clamping bodies. The mall-sized tube toroidal stretching fixture has the advantages of being capable of effectively carrying out a small-sized tube toroidal stretching test, not only ensuring good fit between a test sample and the fixture, but also obtaining more accurate deformation of a scale distance section by aid of the shapes of the pin rods provided with radians. A rectangular strip through hole with a semi-circle end face is used to replace an original round through hole, and therefore connection and assembly with a testing machine is easier. The mall-sized tube toroidal stretching fixture is simple in structure, wide in application range, convenient and fast to install, quite practical, and capable of meeting requirements of tubes of various radius dimensions at the same time.
Description
Technical field
The utility model relates to stretching clamp, specifically refers to carry out to small size tubing the small size tubing hoop stretching clamp that the performances such as hoop stretching and creep are tested.
Background technology
Measure the data that mechanical properties of tubular goods need to obtain drawing pipe, particularly more can represent the pipe hoop stress tensility of tube bulge process.Small size thin-wall pipes (such as zirconium pipe commonly used in the industry, titanium pipe etc.) is implemented hoop stretch, need specific stretching clamp.
For measuring the zirconium pipe ring to tensile property, research has been done to the hoop stress tensility of Zr-Nb pipe in laboratory, U.S. Argonne in 1999, the CEA of Commissariat A L'Energie Atomique also delivered pertinent literature, but all testing research had been done in the hoop stretching of zirconium pipe, and the stretching clamp of its use does not all have specific design.
The data of domestic measurement small size tubing hoop stretching aspect is very limited, and the hoop stretching clamp that wherein adopts also is designed, designed.At present, also do not have a kind of simple effectively, test fixture comparatively accurately.
The utility model content
The purpose of this utility model is to provide a kind of energy convenient use, can solve the small size tubing hoop stretching clamp of sample holder in the small size thin walled tube hoop stretching experiment, fixing problem.
Implementation of the present utility model is as follows: small size tubing hoop stretching clamp comprises two upper and lower being symmetrical arranged and clamp that shape is identical, and carries out the pin rod of pin joint with clamp.
Described clamp mainly is made of frame body and two splint bodies being arranged on frame body one end, has the gap between two splint bodies, and the face that two splint bodies are relative is parallel to each other; And two splint bodies all have pin-and-hole, and pin rod is plugged in the pin-and-hole, and the face that the axis of its pin rod is relative with two splint bodies is vertical.
The shape of described pin-and-hole and the shape of pin rod are complementary.
Pin rod is column, and it is arcwall face at least simultaneously.
Pin-and-hole is the profiled slot of an end opening, and its opening direction is that frame body points to splint body.
Profiled slot is tubaeform groove, and the width dimensions of its opening part is less than the width dimensions of bottom surface, and the bottom surface of tubaeform groove is the lower arcuate surface that is complementary with the pin rod arcwall face.
Described frame body is connected with the testing machine connecting link away from an end of splint body.
Described testing machine connecting link has the rectangular through hole of rectangular band semicircle end face.
The utility model for the test object be small size thin-wall pipes ring specimen, therefore, in order to mate the internal diameter radian of small size thin-wall pipes ring specimen, the utility model adopts at least, and one side is that the arcwall face pin rod is as retained part, two pin rods are inserted small size thin-wall pipes ring specimen, then the mode by pin joint is fixed on two pin rods in the pin-and-hole, then the testing machine connecting link is connected with testing machine, behind the starting characteristics test machine, so that pin rod exerts pressure to small size thin-wall pipes ring specimen, then so that the distortion of small size thin-wall pipes ring specimen.Calculate at last deformation values.
Wherein there is the gap between two splint bodies, while two splint bodies and frame body consist of the tubing that can place small size thin-wall pipes ring specimen and place groove, exist the gap to be a bit larger tham the pipe range of small size thin-wall pipes ring specimen between two splint body.
Adopt high temperature alloy to make upper and lower symmetrically arranged clamp.Test environment conditions is that the environment below 1000 ℃ all can use, and can use in high temperature atmosphere stove and gaseous environment chamber.Pin rod has arcuate surface, the radius of arcuate surface and small size thin-wall pipes ring specimen radius coupling.The plane of certain angle is processed in the pin rod side, and the form assembling that pin rod and splint body can intert does not relate to the securing members such as screw.The convertible radius size of pin rod, thus satisfy the small size thin-wall pipes ring specimen of different radii.
The clamping that it is concrete and testing process are: (a) pin rod is inserted on the small size thin-wall pipes ring specimen, adjust the position; (b) pin rod and the supporting installation of frame body are fixed, simultaneously testing machine connecting link (11) is linked to each other with testing machine; (c) environmental device such as high temperature furnace is installed; (d) start testing machine, carry out prestretched, remove the excess enthalpy gap between pin rod and the small size thin-wall pipes ring specimen; (e) the starting characteristics test machine applies speed or the load of setting, carries out the test of small size tubing hoop stretching/croop property.
Wherein, during installation, two pin rod retainer shaft line parallels pass the center of small size thin-wall pipes ring specimen, and the gauge length section of small size thin-wall pipes ring specimen is in outside the pin rod arc surface, guarantee to stretch or during creep test circumferential deformation concentrate in the gauge length section.
The utility model has the advantage of: can effectively carry out small size tubing hoop tensile test, by the pin rod shape with radian, both guarantee good fit between sample and anchor clamps, can obtain again more accurately gauge length section distortion.The rectangular through hole of rectangular band semicircle end face has replaced the in the past form of manhole, both satisfies the requirement with circular faying face, and has larger space, and easier and testing machine assembles.Clamp structure is simple, and can satisfy simultaneously the tubing of multiple radius size, and is applied widely.It is convenient that anchor clamps are installed, and has larger practicality.
Description of drawings
Fig. 1 is the one-piece construction schematic diagram of a clamp in the utility model.
Fig. 2 is the structural representation of pin rod in the utility model.
Label among the figure is expressed as respectively: 1, clamp; 2, pin rod; 11, testing machine connecting link; 12, the rectangular through hole of rectangular band semicircle end face; 13, frame body; 14, splint body; 15, tubing is placed groove; 16, pin-and-hole; 21, arcwall face.
Embodiment
Embodiment one
As shown in Figure 1, 2.
Small size tubing hoop stretching clamp comprises two upper and lower being symmetrical arranged and clamp 1 that shape is identical, and carries out the pin rod 2 of pin joint with clamp 1.
Described clamp 1 mainly is made of frame body 13 and two splint bodies 14 being arranged on frame body 13 1 ends, has the gap between two splint bodies 14, and the face that two splint bodies 14 are relative is parallel to each other; And two splint bodies 14 all have pin-and-hole 16, and pin rod 2 is plugged in the pin-and-hole 16, and the face that the axis of its pin rod 2 and two splint bodies 14 are relative is vertical.
The shape of the shape of described pin-and-hole 16 and pin rod 2 is complementary.
Pin rod 2 is column, and it is arcwall face 21 at least simultaneously.
Pin-and-hole 16 is the profiled slot of an end opening, and its opening direction is that frame body 13 points to splint body 14.
Profiled slot is tubaeform groove, and the width dimensions of its opening part is less than the width dimensions of bottom surface, and the bottom surface of tubaeform groove is the lower arcuate surface that is complementary with pin rod 2 arcwall faces.
Described frame body 13 is connected with testing machine connecting link 11 away from an end of splint body 14.
Described testing machine connecting link 11 has the rectangular through hole 12 of rectangular band semicircle end face.
The utility model for the test object be small size thin-wall pipes ring specimen, therefore, in order to mate the internal diameter radian of small size thin-wall pipes ring specimen, the utility model adopts at least, and one side is that arcwall face 21 pin rods 2 are as retained part, two pin rods 2 are inserted small size thin-wall pipes ring specimen, then the mode by pin joint is fixed on two pin rods 2 in the pin-and-hole 16, then testing machine connecting link 11 is connected with testing machine, behind the starting characteristics test machine, so that 2 pairs of small size thin-wall pipes of pin rod ring specimen exerts pressure, then so that the distortion of small size thin-wall pipes ring specimen.Calculate at last deformation values.
Wherein there is the gap between two splint bodies 14, while two splint bodies 14 and frame body 13 consist of the tubing that can place small size thin-wall pipes ring specimen and place groove, exist the gap to be a bit larger tham the pipe range of small size thin-wall pipes ring specimen between two splint body 14.
Adopt high temperature alloy to make upper and lower symmetrically arranged clamp.Test environment conditions is that the environment below 1000 ℃ all can use, and can use in high temperature atmosphere stove and gaseous environment chamber.Pin rod has arcuate surface, the radius of arcuate surface and small size thin-wall pipes ring specimen radius coupling.The plane of certain angle is processed in the pin rod side, and the form assembling that pin rod and splint body can intert does not relate to the securing members such as screw.The convertible radius size of pin rod, thus satisfy the small size thin-wall pipes ring specimen of different radii.
The clamping that it is concrete and testing process are: (a) pin rod is inserted on the small size thin-wall pipes ring specimen, adjust the position; (b) pin rod and frame body 13 supporting installations are fixed, simultaneously testing machine connecting link 11 is linked to each other with testing machine; (c) environmental device such as high temperature furnace is installed; (d) start testing machine, carry out prestretched, remove the excess enthalpy gap between pin rod and the small size thin-wall pipes ring specimen; (e) the starting characteristics test machine applies speed or the load of setting, carries out the test of small size tubing hoop stretching/croop property.
Wherein, during installation, two pin rod retainer shaft line parallels pass the center of small size thin-wall pipes ring specimen, and the gauge length section of small size thin-wall pipes ring specimen is in outside the pin rod arc surface, guarantee to stretch or during creep test circumferential deformation concentrate in the gauge length section.
As mentioned above, then can well realize the utility model.
Claims (8)
1. small size tubing hoop stretching clamp is characterized in that: comprise two upper and lower being symmetrical arranged and clamp (1) that shape is identical, and carry out the pin rod (2) of pin joint with clamp (1).
2. small size tubing hoop stretching clamp according to claim 1, it is characterized in that: described clamp (1) mainly is made of frame body (13) and two splint bodies (14) of being arranged on frame body (13) one ends, have the gap between two splint bodies (14), the face that two splint bodies (14) are relative is parallel to each other; And two splint bodies (14) all have pin-and-hole (16), and pin rod (2) is plugged in the pin-and-hole (16), and the face that the axis of its pin rod (2) is relative with two splint bodies (14) is vertical.
3. small size tubing hoop stretching clamp according to claim 2, it is characterized in that: the shape of the shape of described pin-and-hole (16) and pin rod (2) is complementary.
4. small size tubing hoop stretching clamp according to claim 2, it is characterized in that: pin rod (2) is column, its at least one side be arcwall face (21).
5. small size tubing hoop stretching clamp according to claim 4, it is characterized in that: pin-and-hole (16) is the profiled slot of an end opening, its opening direction is that frame body (13) points to splint body (14).
6. small size tubing hoop stretching clamp according to claim 5, it is characterized in that: profiled slot is tubaeform groove, the width dimensions of its opening part is less than the width dimensions of bottom surface, and the bottom surface of tubaeform groove is the lower arcuate surface that is complementary with pin rod (2) arcwall face.
7. the described small size tubing of any one hoop stretching clamp according to claim 2-6, it is characterized in that: described frame body (13) is connected with testing machine connecting link (11) away from an end of splint body (14).
8. small size tubing hoop stretching clamp according to claim 7, it is characterized in that: described testing machine connecting link (11) has the rectangular through hole of rectangular band semicircle end face (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324256 CN202693413U (en) | 2012-07-06 | 2012-07-06 | Small-sized tube toroidal stretching fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324256 CN202693413U (en) | 2012-07-06 | 2012-07-06 | Small-sized tube toroidal stretching fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202693413U true CN202693413U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220324256 Expired - Lifetime CN202693413U (en) | 2012-07-06 | 2012-07-06 | Small-sized tube toroidal stretching fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202693413U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237011A (en) * | 2014-09-05 | 2014-12-24 | 天津大学 | Novel pipe girth weld test sample creep testing device |
| CN105388065A (en) * | 2015-11-26 | 2016-03-09 | 中国航空工业集团公司北京航空材料研究院 | Convenient-to-clamp pipe circumferential tensile test device |
| CN105571941A (en) * | 2014-10-30 | 2016-05-11 | 深圳市信立泰生物医疗工程有限公司 | Mold and method for ring hoop tension tests of small polymer pipes |
| CN106053232A (en) * | 2016-07-15 | 2016-10-26 | 核工业理化工程研究院 | Device and test method for testing circumferential fracture toughness of thin-wall pipe |
| CN109269881A (en) * | 2018-09-30 | 2019-01-25 | 天津津荣天宇精密机械股份有限公司 | A kind of drawing fixture of rectangular tubular workpiece |
| CN113092257A (en) * | 2021-04-13 | 2021-07-09 | 西北有色金属研究院 | Universal test device and test method for circumferential tension of metal pipe |
| CN117129335A (en) * | 2023-10-27 | 2023-11-28 | 沈阳飞机工业（集团）有限公司 | Method for obtaining circumferential mechanical performance parameters of pipe |
| CN109269881B (en) * | 2018-09-30 | 2024-06-04 | 天津津荣天宇精密机械股份有限公司 | Drawing fixture for rectangular tubular workpiece |
-
2012
- 2012-07-06 CN CN 201220324256 patent/CN202693413U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237011A (en) * | 2014-09-05 | 2014-12-24 | 天津大学 | Novel pipe girth weld test sample creep testing device |
| CN105571941A (en) * | 2014-10-30 | 2016-05-11 | 深圳市信立泰生物医疗工程有限公司 | Mold and method for ring hoop tension tests of small polymer pipes |
| CN105571941B (en) * | 2014-10-30 | 2023-08-29 | 深圳信立泰医疗器械股份有限公司 | Die for circumferential tensile test of polymer small pipe and test method thereof |
| CN105388065A (en) * | 2015-11-26 | 2016-03-09 | 中国航空工业集团公司北京航空材料研究院 | Convenient-to-clamp pipe circumferential tensile test device |
| CN106053232A (en) * | 2016-07-15 | 2016-10-26 | 核工业理化工程研究院 | Device and test method for testing circumferential fracture toughness of thin-wall pipe |
| CN109269881A (en) * | 2018-09-30 | 2019-01-25 | 天津津荣天宇精密机械股份有限公司 | A kind of drawing fixture of rectangular tubular workpiece |
| CN109269881B (en) * | 2018-09-30 | 2024-06-04 | 天津津荣天宇精密机械股份有限公司 | Drawing fixture for rectangular tubular workpiece |
| CN113092257A (en) * | 2021-04-13 | 2021-07-09 | 西北有色金属研究院 | Universal test device and test method for circumferential tension of metal pipe |
| CN117129335A (en) * | 2023-10-27 | 2023-11-28 | 沈阳飞机工业（集团）有限公司 | Method for obtaining circumferential mechanical performance parameters of pipe |
| CN117129335B (en) * | 2023-10-27 | 2024-01-02 | 沈阳飞机工业（集团）有限公司 | Method for obtaining circumferential mechanical performance parameters of pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |