CN204944938U - For performing the sample of hoop tensile strength test to bamboo composite pressure pipe - Google Patents
For performing the sample of hoop tensile strength test to bamboo composite pressure pipe Download PDFInfo
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- CN204944938U CN204944938U CN201520654438.1U CN201520654438U CN204944938U CN 204944938 U CN204944938 U CN 204944938U CN 201520654438 U CN201520654438 U CN 201520654438U CN 204944938 U CN204944938 U CN 204944938U
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Abstract
The utility model discloses a kind of sample for performing the test of hoop tensile strength to bamboo composite pressure pipe, this sample is circular ring, and it is by forming along the radial cuts of bamboo composite pressure pipe to be tested; The upper and lower end face of sample side offers two symmetrical and grooves that bottom surface is parallel, groove extends along the annulus of sample; Sample opposite side offers same laterally zygomorphic groove, and the groove that sample both sides are offered is symmetrical about the center of circle of sample; Sample unit clamp clamps, and this fixture comprises about two and is symmetrical arranged and the identical upper lower clamp of shape, and upper lower clamp includes pull bar and mould, and pull bar is U-shaped fork structure, and mould is semi-circular platy structure, and mould is fixedly connected with the U-shaped fork structure of pull bar.The utility model, by said sample and unit clamp, can realize the test fast and accurately of bamboo composite pressure pipe hoop tensile strength, have the advantages such as structure is simple, easy to operate.
Description
Technical field
The utility model belongs to mechanics properties ofpiping test sample and field of fixtures, more specifically, relates to a kind of sample for performing the test of hoop tensile strength to bamboo composite pressure pipe.
Background technology
Bamboo composite pressure pipe is a kind of is matrix material with bamboo wood, take thermoset resin as tackifier, adopt the novel pressure pipeline that winding process is made, the characteristics such as this novel pressure pipeline has that compressive resistance is high, good rigidity, insulation, corrosion resistant, current excellent performance, lightweight, easy for installation, with low cost, long service life, can be widely used in the fields such as urban water supply and sewerage, water conservancy, field irrigation, petroleum waste water process, industrial circulating water.
Bamboo composite pressure pipe rolls off the production line after finished product, for the pipeline used under different occasion, need, to using the hoop of the pipeline size that can meet with stresses to measure, namely to test its hoop tensile strength, determine whether bamboo composite pressure pipe performance meets quality and production requirement with this.Because bamboo composite pressure pipe is the special pressure pipeline being matrix with bamboo wood and making with winding process, also do not have in prior art a kind of simple effectively and can be used for performing bamboo composite pressure pipe sample and the fixture of the test of hoop tensile strength comparatively accurately.
Utility model content
For above defect or the Improvement requirement of prior art, the utility model provides a kind of sample for performing the test of hoop tensile strength to bamboo composite pressure pipe, wherein in conjunction with the feature of bamboo composite pressure pipe self, devise accordingly and be applicable to the sample that bamboo composite pressure pipe performs the test of hoop tensile strength, and to the critical process of this sample and technological parameter as the mode of offering of groove and offer position, the size of groove carries out studying and designing, effectively can prepare accordingly and be applicable to the sample that bamboo composite pressure pipe performs the test of hoop tensile strength, have and prepare advantage simply and easily, meanwhile, the utility model have also been devised for clamping the unit clamp of sample in execution hoop tensile strength test process, and it is simple that this fixture has structure, easy to operate advantage.
For achieving the above object, the utility model proposes a kind of sample for performing the test of hoop tensile strength to bamboo composite pressure pipe, it is characterized in that, this sample is external diameter is D, internal diameter is d, be highly the circular ring of B, it is by forming along the radial cuts of bamboo composite pressure pipe to be tested; Wherein, the upper and lower end face of described sample side offers laterally zygomorphic and that bottom surface is parallel two grooves, this groove extends along the annulus of described sample; The sole length of described groove is L, and the distance between two groove floor is b; The opposite side of described sample offers same laterally zygomorphic two grooves, and two grooves that the same end face of described sample is offered are symmetrical about the center of circle of described sample.
As preferred further, described groove is connected by chamfered transition with the annulus end face of described sample.
As preferred further, described chamfering is 45 °.
As preferred further, described height B, length L and distance b are determined by the nominal diameter DN of bamboo composite pressure pipe, get 40mm ~ 50mm, b gets 10mm when 150mm≤DN≤600mm, B gets 30mm, L; When 600mm < DN≤1000mm, B get, 40mm, L get 50mm ~ 60mm, b gets 12mm; When DN > 1000mm, B get, 45mm, L get 60mm ~ 70mm, b gets 12mm.
As further preferred, described sample adopts unit clamp to clamp, and described unit clamp comprises about two and is symmetrical arranged and the identical upper clamp of shape and lower clamp, wherein:
This upper clamp comprises upper connecting rod and pull-up mould, the bottom of described upper connecting rod is U-shaped fork structure, described pull-up mould is semi-circular platy structure, described pull-up mould is fixedly connected with the U-shaped fork structure of described upper connecting rod, and the U-shaped fork anatomical connectivity of described upper connecting rod is on the axis of described pull-up mould;
This lower clamp comprises lower link and drop-down mould, the top of described lower link is U-shaped fork structure, described drop-down mould is semi-circular platy structure, described drop-down mould is fixedly connected with the U-shaped fork structure of described lower link, and the U-shaped fork anatomical connectivity of described lower link is on the axis of described drop-down mould;
The pull-up mould of described semi-circular platy structure and drop-down mould are sleeved on the inside of described sample, and the shape of described pull-up mould and drop-down mould and the shape of described sample adapt; The U-shaped fork structure of described upper connecting rod and lower link is sleeved on the outside of described sample.
As preferred further, described pull-up mould is connected by web joint with drop-down mould, and this web joint is connected with described pull-up mould and drop-down mold-slide.
As preferred further, the pull-up mould of described semi-circular platy structure and drop-down mould all have an arc-shaped edges and a straight line, described pull-up mould and drop-down mould offer the sliding recess for installing described web joint, described sliding recess is vertical with the straight line of described semi-circular platy structure.
As preferred further, described pull-up mould is fixedly connected with the U-shaped fork structure of described upper connecting rod by screw; Described drop-down mould is fixedly connected with the U-shaped fork structure of described lower link by screw.
As preferred further, the pull-up mould of described semi-circular platy structure is relative with the water straight line of drop-down mould, and parallel to each other.
As preferred further, described pull-up mould is parallel with the line of centres of two grooves that the same end face in described sample both sides is offered with the straight line of drop-down mould.
In general, the above technical scheme conceived by the utility model compared with prior art, mainly possesses following technological merit:
1. the utility model be matrix material in conjunction with bamboo composite pressure pipe with bamboo wood, take thermoset resin as adhesive, the feature that adopts winding process to make, devise the sample that the bamboo composite pressure pipe being applicable to have said structure performs the test of hoop tensile strength accordingly, the design of sample and shape and structure are studied simultaneously, and the size of sample upper groove is designed, prepare simple and convenient, be convenient to the quick test of bamboo composite pressure pipe hoop tensile strength.
2. the utility model is also studied for the fixture clamping sample in execution hoop tensile strength test process, devise and be applicable to the unit clamp that bamboo composite pressure pipe performs the test of hoop tensile strength, it is simple that this fixture has structure, workable advantage.
Accompanying drawing explanation
Fig. 1 (a) and (b) are front view and the sectional view of the annular sample of bamboo composite pressure pipe respectively;
Fig. 2 (a) and (b) are the front view and the left view that perform the test of hoop tensile strength with unit clamp respectively.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.In addition, if below in described each embodiment of the utility model involved technical characteristic do not form conflict each other and just can mutually combine.
As shown in Fig. 1 (a) He (b), a kind of sample for performing the test of hoop tensile strength to bamboo composite pressure pipe of the present utility model, this sample 1 is by forming along the radial cuts of bamboo composite pressure pipe to be tested, it is be highly the circular ring of B, the external diameter of sample is D, internal diameter is d, the upper and lower end face of circular sample side offers laterally zygomorphic groove, this groove extends along the annulus of sample, its sole length is L, distance between two groove floor is b, and be parallel to each other, the opposite side relative with circular sample side offers same laterally zygomorphic groove, the line of centres of two grooves that the same end face of circular sample both sides is offered and the intersect vertical axis of circular sample, namely the two grooves same end face of sample offered are symmetrical arranged about the center of circle of circular sample.More specifically, the both sides up and down of groove are connected by chamfered transition with the annulus end face of sample, and this chamfering is preferably 45 °.
Wherein, choosing of specimen height B, distance b between groove floor length L and two groove floor is relevant with the nominal diameter of bamboo composite pressure pipe, and selective rule is as shown in table 1.
Table 1 tensile sample dimensional units is millimeter (mm)
| Nominal diameter DN | Groove length L | Specimen height B | Distance b |
| 150≤DN≤600 | 40-50 | 30 | 10 |
| 600＜DN≤1000 | 50-60 | 40 | 12 |
| DN＞1000 | 60-70 | 45 | 12 |
The utility model have also been devised a set of unit clamp, it performs the sample of hoop tensile strength test to bamboo composite pressure pipe for clamping, as shown in Fig. 2 (a) He (b), it is for clamping test sample in the utility model to carry out the test of hoop tensile strength, this unit clamp comprises about two and is symmetrical arranged and the identical upper clamp of shape and lower clamp, upper clamp comprises upper connecting rod 2 and pull-up mould 3, wherein, the bottom of upper connecting rod 2 is U-shaped fork structure, pull-up mould 3 is semi-circular platy structure, the top of semi-circular platy structure is fixedly connected with by screw 4 with U-shaped fork structure, the U-shaped fork anatomical connectivity of upper connecting rod 2 is on the axis of pull-up mould 3, lower clamp comprises lower link 2 ' and drop-down mould 3 ', wherein, the top of lower link 2 ' is U-shaped fork structure, drop-down mould 3 ' is semi-circular platy structure, the bottom of semi-circular platy structure is fixedly connected with by screw 4 with U-shaped fork structure, and the U-shaped fork anatomical connectivity of lower link 2 ' is on the axis of drop-down mould 3 ', the pull-up mould 3 of semi-circular platy structure and drop-down mould 3 ' all have an arc-shaped edges and a straight line, and pull-up mould 3 is relative with the straight line of drop-down mould 3 ', and parallel to each other, pull-up mould 3 is connected by web joint 5 with drop-down mould 3 ', this web joint 5 is slidably connected with pull-up mould 3 and drop-down mould 3 ', pull-up mould 3 and drop-down mould 3 ' offer for installing web joint 5 sliding recess 6, sliding recess 6 is vertical with the straight line of semi-circular platy structure, and web joint 5 is slidably connected by bolt 7 and pull-up mould 3 and drop-down mould 3 '.
Before the unit clamp utilizing the utility model the to design sample clamped in the utility model carries out the test of hoop tensile strength, first, the pull-up mould 3 of semi-circular platy structure and drop-down mould 3 ' are sleeved on cirque structure sample inner, wherein the shape of pull-up mould 3 and drop-down mould 3 ' and the shape of circular sample adapt, then the U-shaped fork structure of upper connecting rod 2 and lower link 2 ' is sleeved on the outside of cirque structure sample, finally the U-shaped fork structure of upper connecting rod 2 is fixed by screw 4 and pull-up mould 3, the U-shaped fork structure of lower link 2 ' is fixed by screw 4 and drop-down mould 3 ', make sample 1 thus between the U-shaped fork structure and pull-up mould 3 of upper connecting rod 2, and between the U-shaped fork structure of lower link 2 ' and drop-down mould 3 ', during installation, need ensure that pull-up mould 3 is parallel with the line of centres of two grooves that the same end face in ring-shaped sample both sides is offered with the straight line of drop-down mould 3 ', then upper connecting rod 2 and lower link 2 ' are arranged on tension tester, by controlling the pull-up of pull-up mould 3, the drop-down test that can realize the hoop tensile strength of bamboo composite pressure pipe of drop-down mould 3 '.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1., for performing a sample for hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, this sample is external diameter is D, internal diameter is d, be highly the circular ring of B, it is by forming along the radial cuts of bamboo composite pressure pipe to be tested; Wherein, the upper and lower end face of described sample side offers laterally zygomorphic and that bottom surface is parallel two grooves, this groove extends along the annulus of described sample; The sole length of described groove is L, and the distance between two groove floor is b; The opposite side of described sample offers same laterally zygomorphic two grooves, and two grooves that the same end face of described sample is offered are symmetrical about the center of circle of described sample.
2., as claimed in claim 1 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, described groove is connected by chamfered transition with the annulus end face of described sample.
3., as claimed in claim 2 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, described chamfering is 45 °.
4. the sample for performing the test of hoop tensile strength to bamboo composite pressure pipe as described in any one of claim 1-3, it is characterized in that, described height B, length L and distance b are determined by the nominal diameter DN of bamboo composite pressure pipe, get 40mm ~ 50mm when 150mm≤DN≤600mm, B gets 30mm, L, b gets 10mm; When 600mm < DN≤1000mm, B get, 40mm, L get 50mm ~ 60mm, b gets 12mm; When DN > 1000mm, B get, 45mm, L get 60mm ~ 70mm, b gets 12mm.
5. as claimed in claim 4 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, this sample adopts unit clamp to clamp, and described unit clamp comprises about two and is symmetrical arranged and the identical upper clamp of shape and lower clamp, wherein:
This upper clamp comprises upper connecting rod (2) and pull-up mould (3), the bottom of described upper connecting rod (2) is U-shaped fork structure, described pull-up mould (3) is semi-circular platy structure, described pull-up mould (3) is fixedly connected with the U-shaped fork structure of described upper connecting rod (2), and the U-shaped fork anatomical connectivity of described upper connecting rod (2) is on the axis of described pull-up mould (3);
This lower clamp comprises lower link (2 ') and drop-down mould (3 '), the top of described lower link (2 ') is U-shaped fork structure, described drop-down mould (3 ') is semi-circular platy structure, described drop-down mould (3 ') is fixedly connected with the U-shaped fork structure of described lower link (2 '), and the U-shaped fork anatomical connectivity of described lower link (2 ') is on the axis of described drop-down mould (3 ');
The pull-up mould (3) of described semi-circular platy structure and drop-down mould (3 ') are sleeved on the inside of described sample, and the shape of described pull-up mould (3) and drop-down mould (3 ') and the shape of described sample adapt; The U-shaped fork structure of described upper connecting rod (2) and lower link (2 ') is sleeved on the outside of described sample.
6. as claimed in claim 5 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, described pull-up mould (3) is connected by web joint (5) with drop-down mould (3 '), and this web joint (5) is slidably connected with described pull-up mould (3) and drop-down mould (3 ').
7. as claimed in claim 6 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, the pull-up mould (3) of described semi-circular platy structure and drop-down mould (3 ') all have an arc-shaped edges and a straight line, described pull-up mould (3) and drop-down mould (3 ') offer the sliding recess (6) for installing described web joint (5), described sliding recess (6) is vertical with the straight line of described semi-circular platy structure.
8., as claimed in claim 7 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, described pull-up mould (3) is fixedly connected with the U-shaped fork structure of described upper connecting rod (2) by screw; Described drop-down mould (3 ') is fixedly connected with the U-shaped fork structure of described lower link (2 ') by screw.
9. as claimed in claim 8 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, the pull-up mould (3) of described semi-circular platy structure is relative with the straight line of drop-down mould (3 '), and parallel to each other.
10. as claimed in claim 9 for performing the sample of hoop tensile strength test to bamboo composite pressure pipe, it is characterized in that, described pull-up mould (3) is parallel with the line of centres of two grooves that the same end face in described sample both sides is offered with the straight line of drop-down mould (3 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654438.1U CN204944938U (en) | 2015-08-27 | 2015-08-27 | For performing the sample of hoop tensile strength test to bamboo composite pressure pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654438.1U CN204944938U (en) | 2015-08-27 | 2015-08-27 | For performing the sample of hoop tensile strength test to bamboo composite pressure pipe |
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| CN204944938U true CN204944938U (en) | 2016-01-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297811A (en) * | 2018-09-28 | 2019-02-01 | 西北工业大学 | Double-shaft two-way compression-loaded devices and methods therefor |
| CN109443910A (en) * | 2018-11-29 | 2019-03-08 | 中国科学院理化技术研究所 | Annular sample tensile test fixture |
| CN113820206A (en) * | 2021-10-28 | 2021-12-21 | 吉林大学 | Test sample, test fixture and test method for measuring Bauschinger effect of plate |
-
2015
- 2015-08-27 CN CN201520654438.1U patent/CN204944938U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297811A (en) * | 2018-09-28 | 2019-02-01 | 西北工业大学 | Double-shaft two-way compression-loaded devices and methods therefor |
| CN109443910A (en) * | 2018-11-29 | 2019-03-08 | 中国科学院理化技术研究所 | Annular sample tensile test fixture |
| CN113820206A (en) * | 2021-10-28 | 2021-12-21 | 吉林大学 | Test sample, test fixture and test method for measuring Bauschinger effect of plate |
| CN113820206B (en) * | 2021-10-28 | 2022-06-21 | 吉林大学 | Test sample, test fixture and test method for measuring Bauschinger effect of plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230315 Address after: 311122 No. 29-16, Jiaqi Road, Xianlin Street, Yuhang District, Hangzhou, Zhejiang Patentee after: Zhonglin Xinzhou Bamboo Winding Development Co.,Ltd. Address before: 311115 No. 6 Xiuyan Road, Fengdu Village, Pingyao Town, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG XINZHOU BAMBOO-BASED COMPOSITES TECHNOLOGY Co.,Ltd. Patentee before: Ye Ling |
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| TR01 | Transfer of patent right |