CN112229710A - Clamping device for umbrella-shaped plastic corrugated pipe drawing force test - Google Patents
Clamping device for umbrella-shaped plastic corrugated pipe drawing force test Download PDFInfo
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- CN112229710A CN112229710A CN202011279989.6A CN202011279989A CN112229710A CN 112229710 A CN112229710 A CN 112229710A CN 202011279989 A CN202011279989 A CN 202011279989A CN 112229710 A CN112229710 A CN 112229710A
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- clamping device
- corrugated pipe
- plastic corrugated
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- rod
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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
- G01N2203/0274—Tubular or ring-shaped specimens
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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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- 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 relates to an umbrella-shaped plastic corrugated pipe drawing force test clamping device which comprises a testing machine, a first plastic corrugated pipe joint clamping device and a second plastic corrugated pipe joint clamping device, wherein a plastic corrugated pipe joint assembly is placed between the first plastic corrugated pipe joint clamping device and the second plastic corrugated pipe joint clamping device, the first plastic corrugated pipe joint clamping device and the second plastic corrugated pipe joint clamping device respectively comprise a central main drawing rod, a clamping range adjusting structure and a clamping structure, the top end of the central main drawing rod is connected with the testing machine and cannot rotate, a sleeve is sleeved on the periphery of the central main drawing rod, the sleeve is connected with an ejector rod through the clamping range adjusting structure, and the top of the ejector rod is hinged with an arc-shaped lining strip. The invention transmits the push rods around the central main wire drawing rod of the clamping device to the inner wall of the plastic corrugated pipe, and adjusts the clamping range through the umbrella-like structure so as to meet the requirements of clamping the plastic corrugated pipes with different pipe diameters.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a clamping device for an umbrella-shaped plastic corrugated pipe drawing force test.
Background
Chinese patent (application No. 201510618935.0) discloses a general bellows tensile test fixture, which comprises a pull rod, a shaft, a support seat, a support arm and a fixing clamp, wherein the pull rod is provided with a pull ring at the top end, the pull rod is connected with the shaft, the shaft is connected with the support seat, the support arm is hinged with the support seat through a bolt, the fixing clamp is hinged with the support arm, the bottom end of the fixing clamp is provided with a movable plate and a fixed plate, and the movable plate is slidably connected with the fixed plate and fixed through the bolt.
The Chinese patent (application number: 201920840296.6) discloses a prestressed corrugated pipe tensile property test fixture, which comprises a conical column, a conical sleeve, a connecting rod and a stop block, wherein the conical sleeve is circumferentially divided into a plurality of structures, the conical sleeve is movably sleeved on a conical surface of the conical column, the connecting rod is of a stepped shaft structure, an outer end large head is arranged on the outer end, the inner end of the outer end of the conical sleeve penetrates into the conical column and then is spirally connected with the stop block, the stop block is abutted against the inner end of the conical sleeve, the stop block can stretch and lock the conical sleeve to the corrugated pipe after rotating through the connecting rod, and the large.
Chinese patent (application No. 201721327728.0) discloses a clamp for a bellows tensile test, which includes: the outer tightening rings are arranged on the outer surfaces of the two ends of the corrugated pipe and comprise at least three arc pieces surrounding the corrugated pipe; the ring buckle steel belt is encircled on the outer surface of the outer fastening ring and fastened by bolts; the outer diameter of the inner support ring is in interference fit with the inner diameter of the corrugated pipe and is plugged into two ends of the corrugated pipe, and the inner support ring is matched with the outer tightening ring to clamp the corrugated pipe; the inner diameter of the inner supporting ring is continuously reduced from the inner side to the port direction of the corrugated pipe; the pull rod comprises a cone frustum which is matched with the inner part of the inner weighing ring in shape and is in interference fit and a section of rod piece of the connection testing machine, and the cone frustum and the rod piece are connected into a whole.
The three above-mentioned solutions have the following drawbacks: the first processing mode is as follows: the biggest difficult point is in the reliability that fly leaf and bellows are connected, how to ensure its centre gripping firm, because under the circumstances of plastics bellows atress, probably appear leading to the circumstances of centre gripping pine to take place because of bellows centre gripping department deformation, do not explain in detail this main point in the patent scheme. The second processing mode is as follows: the expansion range of the taper sleeve is limited, the outer tight ring and the inner support ring which are correspondingly matched are required to be equipped in the drawing force test of the plastic corrugated pipes with different specifications, the matching requirement is high and uneconomical, and the steel belt of the ring buckle needs to be detached and installed every time when the corrugated pipes are installed on the outer tight ring, so that the test working efficiency is influenced.
Disclosure of Invention
The invention aims to provide a clamping device for an umbrella-shaped plastic corrugated pipe drawing force test, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an experimental clamping device of umbrella type plastic bellow die pull force, includes testing machine, first plastic bellow tube coupling clamping device and second plastic bellow tube coupling clamping device, plastic bellow tube coupling subassembly has been placed between first plastic bellow tube coupling clamping device and the second plastic bellow tube coupling clamping device, first plastic bellow tube coupling clamping device and second plastic bellow tube coupling clamping device all include central main stay bar, centre gripping scope adjustment structure and clamping structure, the top of central main stay bar links to each other and self can not rotate with the testing machine, the sleeve has been cup jointed to the periphery of central main stay bar, the sleeve is connected with the ejector pin through centre gripping scope adjustment structure, the articulated convex interior lining strip in top of ejector pin.
As a further scheme of the invention: the clamping range adjusting structure comprises a sleeve lug plate, a pull rod and a pull rod lower bolt, wherein the sleeve lug plate is fixed on the sleeve, the pull rod is rotatably connected onto the sleeve lug plate, one end, far away from the sleeve lug plate, of the pull rod is rotatably connected onto the pull rod lower bolt, the lower end of the central main wire drawing rod is provided with a central main wire drawing rod lug plate, the pull rod lower bolt is rotatably connected onto the central main wire drawing rod lug plate, and an ejector rod lower bolt is connected between the ejector rod and the central main wire drawing rod lug plate.
As a further scheme of the invention: and an ejector rod upper bolt is connected between the circular arc-shaped lining strip and the ejector rod.
As a further scheme of the invention: the upper end of the sleeve is provided with a feed screw nut, the feed screw nut is sleeved on the periphery of the central main pull screw, and a handle is fixed on the periphery of the feed screw nut.
As a further scheme of the invention: one end of the sleeve, which is close to the screw-nut, is provided with a limiting movable table, and one side of the screw-nut, which is close to the sleeve, is provided with a limiting movable groove for the limiting movable table to move.
As a further scheme of the invention: the thickness of the limiting movable table is m, and m is more than or equal to 2cm and less than or equal to 5 cm.
As a further scheme of the invention: the included angle between the ejector rod and the horizontal direction is alpha, and alpha is more than or equal to 30 degrees and less than or equal to 70 degrees.
Compared with the prior art, the invention has the beneficial effects that: the plastic corrugated pipe can be effectively clamped in the drawing force test process, even if the plastic corrugated pipe deforms when the plastic corrugated pipe is clamped and stretched, the uniform and effective stress of the test sample pipe joint can be still ensured, and the condition that the test result is influenced due to the damage of the plastic corrugated pipe or the loosening of a clamping area caused by stress concentration can not occur; the device can quickly adjust the clamping range of the clamping device aiming at plastic corrugated pipes with different specifications, and only the matched clamping device is required to be installed according to the pipe diameter range of the corrugated pipe; when the device is used for a plastic corrugated pipe drawing force test, the test sample is convenient to mount and dismount, an additional auxiliary clamp is not required to be mounted, and the working efficiency is high. In conclusion, the device provided by the invention can effectively finish the test, has high working efficiency, is economic and reliable, and can make up for the defects of the existing scheme.
Drawings
FIG. 1 is a schematic structural view of a clamping device for a pullout force test of an umbrella-shaped plastic corrugated pipe according to the present invention;
FIG. 2 is a schematic view of the connection mode of a screw nut and a sleeve in the clamping device for the umbrella-shaped plastic corrugated pipe drawing force test of the invention;
FIG. 3 is a schematic view of the clamping device for an umbrella-shaped plastic corrugated pipe pulling force test according to the present invention when adjusting the corrugated pipe;
fig. 4 is a schematic view of the overall structure of the clamping device for the umbrella-shaped plastic corrugated pipe pulling force test of the invention.
In the figure: 1. a central main wire drawing rod; 2. a feed screw nut; 3. a handle; 4. a sleeve; 5. a sleeve ear plate; 6. circular arc-shaped inner lining strips; 7. a top rod; 8. a central main wire drawing rod ear plate; 9. a lower bolt of the ejector rod; 10. a pull rod lower bolt; 11. a bolt is arranged on the ejector rod; 12. a pull rod; 13. bolts are arranged on the pull rods; 14. a first plastic corrugated pipe joint clamping device; 15. a plastic bellows joint assembly; 16. a second plastic corrugated pipe joint clamping device; 17. a testing machine; 18. a limiting movable groove; 19. a limiting movable table.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in the embodiment of the present invention, an umbrella-shaped plastic corrugated pipe drawing force test clamping device includes a testing machine 17, a first plastic corrugated pipe joint clamping device 14 and a second plastic corrugated pipe joint clamping device 16, a plastic corrugated pipe joint assembly 15 is placed between the first plastic corrugated pipe joint clamping device 14 and the second plastic corrugated pipe joint clamping device 16, each of the first plastic corrugated pipe joint clamping device 14 and the second plastic corrugated pipe joint clamping device 16 includes a central main drawing rod 1, a clamping range adjusting structure and a clamping structure, a top end of the central main drawing rod 1 is connected with the testing machine 17 and is non-rotatable, a sleeve 4 is sleeved on an outer periphery of the central main drawing rod 1, the sleeve 4 is connected with a top rod 7 through the clamping range adjusting structure, a circular arc-shaped lining strip 6 is hinged to a top of the top rod 7, the clamping range adjusting structure comprises a sleeve 4 lug plate, a pull rod 12 and a pull rod 12 lower bolt 10, wherein the sleeve 4 lug plate is fixed on the sleeve 4, the pull rod 12 is rotatably connected on the sleeve 4 lug plate, one end of the pull rod 12, which is far away from the sleeve 4 lug plate, is rotatably connected on the pull rod 12 lower bolt 10, the lower end of a central main wire drawing rod 1 is provided with a central main wire drawing rod 1 lug plate, the pull rod 12 lower bolt 10 is rotatably connected on the central main wire drawing rod 1 lug plate, a post rod 7 lower bolt is connected between the post rod 7 and the central main wire drawing rod 1 lug plate, an upper post rod 7 bolt is connected between an arc-shaped inner liner 6 and the post rod 7, the upper end of the sleeve 4 is provided with a lead screw nut 2, the lead screw nut 2 is sleeved on the periphery of the central main wire drawing rod 1, a handle 3 is fixed on the periphery of the lead screw nut 2, and one end of the sleeve 4, which, and one side of the feed screw nut 2 close to the sleeve 4 is provided with a limiting movable groove 18 for the movement of a limiting movable table 19.
When the device is used, when a plastic corrugated pipe drawing force test is carried out on a testing machine, the following steps are carried out: (1) sampling the plastic corrugated pipe, and if the test object is an assembly part, assembling the pipe fitting and the pipe, wherein the length of each section of pipe is at least 300 mm; (2) the clamping device is arranged on a testing machine, and the distance between the clamping devices is adjusted to be slightly longer than the length of the plastic corrugated pipe assembly part; (3) sleeving the corrugated pipe into a lower clamping device, rotating a screw rod nut through a hand lever, opening ejector rods on the periphery of a central main wire drawing rod, and adjusting the clamping device to a proper range to ensure that four hinged arc-shaped lining strips of the clamping device are just attached to annular threads recessed in the inner wall of the corrugated pipe; (4) adjusting the distance between the upper clamping device and the lower clamping device by using a testing machine, and installing the upper clamping device according to the step (3); (5) starting a test procedure; (6) after the test is finished, rotating the screw rod nut by using a hand lever in the opposite direction, and collecting the push rods around the central main wire drawing rod; (7) the destruction sample was taken out.
The device ensures that the plastic corrugated pipe can be effectively clamped in the drawing force test process of the plastic corrugated pipe, when the plastic corrugated pipe is clamped and stretched, even if the plastic corrugated pipe deforms, the device can still ensure that the test sample pipe section is uniformly and effectively stressed, and the condition that the test result is influenced by the damage of the plastic corrugated pipe or the loosening of a clamping area due to stress concentration can not occur; the device can quickly adjust the clamping range of the clamping device aiming at plastic corrugated pipes with different specifications, and only the matched clamping device is required to be installed according to the pipe diameter range of the corrugated pipe; the device is when plastic corrugated pipe drawing force is experimental, and the installation, dismantle the sample convenient, need not install extra supplementary anchor clamps, and work efficiency is high.
In this embodiment, the thickness of the limiting movable table 19 is m, and m is greater than or equal to 2cm and less than or equal to 5 cm. In this embodiment, m is 3.5cm, so that the stability of the movable limiting table 19 during movement can be ensured. It is understood that m can also be 2cm, 2.5cm, 3cm, 3.5cm, 4cm, 4.5cm, 5cm, etc.
In the embodiment, the included angle between the top rod 7 and the horizontal direction is alpha, and alpha is more than or equal to 30 degrees and less than or equal to 70 degrees. In the embodiment, alpha is 50 degrees, and the arrangement ensures that the adjustable range of the mandril 7 during supporting is larger. It is understood that α can also be 30 °, 35 °, 40 °, 45 °, 55 °, 60 °, 65 °, 70 °, etc.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an experimental clamping device of umbrella type plastic bellow die pull force, a serial communication port, including testing machine, first plastic bellow tube coupling clamping device and second plastic bellow tube coupling clamping device, plastic bellow tube coupling subassembly has been placed between first plastic bellow tube coupling clamping device and the second plastic bellow tube coupling clamping device, first plastic bellow tube coupling clamping device and second plastic bellow tube coupling clamping device all include central main drawing wire pole, centre gripping scope adjustment structure and clamping structure, the top of central main drawing wire pole links to each other and self can not rotate with the testing machine, the sleeve has been cup jointed to the periphery of central main drawing wire pole, the sleeve is connected with the ejector pin through centre gripping scope adjustment structure, the articulated convex interior lining strip in top of ejector pin.
2. The clamping device for the umbrella-shaped plastic corrugated pipe drawing force test according to claim 1, wherein the clamping range adjusting structure comprises a sleeve lug plate, a pull rod and a pull rod lower bolt, the sleeve lug plate is fixed on the sleeve, the pull rod is rotatably connected to the sleeve lug plate, one end of the pull rod, which is far away from the sleeve lug plate, is rotatably connected to the pull rod lower bolt, a central main drawing rod lug plate is arranged at the lower end of the central main drawing rod, the pull rod lower bolt is rotatably connected to the central main drawing rod lug plate, and a push rod lower bolt is connected between the push rod and the central main drawing rod lug plate.
3. The clamping device for the umbrella-shaped plastic corrugated pipe drawing force test of claim 1, wherein a bolt on the ejector rod is connected between the circular arc-shaped lining strip and the ejector rod.
4. The clamping device for the umbrella-shaped plastic corrugated pipe drawing force test as claimed in claim 1, wherein the upper end of the sleeve is provided with a feed screw nut, the feed screw nut is sleeved on the periphery of the central main drawing screw, and a handle is fixed on the periphery of the feed screw nut.
5. The clamping device for the umbrella-shaped plastic corrugated pipe drawing force test according to claim 1, wherein a limiting movable table is arranged at one end of the sleeve close to the lead screw nut, and a limiting movable groove for the limiting movable table to move is arranged at one side of the lead screw nut close to the sleeve.
6. The clamping device for the umbrella-shaped plastic corrugated pipe drawing force test of claim 1, wherein the thickness of the limiting movable table is m, and m is more than or equal to 2cm and less than or equal to 5 cm.
7. The clamping device for the umbrella-shaped plastic corrugated pipe drawing force test as claimed in claim 1, wherein the included angle between the top rod and the horizontal direction is α, and α is greater than or equal to 30 ° and less than or equal to 70 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279989.6A CN112229710A (en) | 2020-11-16 | 2020-11-16 | Clamping device for umbrella-shaped plastic corrugated pipe drawing force test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011279989.6A CN112229710A (en) | 2020-11-16 | 2020-11-16 | Clamping device for umbrella-shaped plastic corrugated pipe drawing force test |
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| Publication Number | Publication Date |
|---|---|
| CN112229710A true CN112229710A (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011279989.6A Pending CN112229710A (en) | 2020-11-16 | 2020-11-16 | Clamping device for umbrella-shaped plastic corrugated pipe drawing force test |
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| CN (1) | CN112229710A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262957A (en) * | 2021-05-25 | 2021-08-17 | 天长市永泰密封材料有限公司 | Piston bulge scraping type sealant extruding cylinder |
| CN113624594A (en) * | 2021-07-08 | 2021-11-09 | 闫化玺 | Pipe fitting bending degree detection device that shocks resistance for automobile production can improve precision |
| CN114295469A (en) * | 2022-01-24 | 2022-04-08 | 浙江省交通运输科学研究院 | Annular clamping device for pipe tensile test and using method |
| CN114871664A (en) * | 2022-02-22 | 2022-08-09 | 苗艳 | Multifunctional welding tool |
-
2020
- 2020-11-16 CN CN202011279989.6A patent/CN112229710A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262957A (en) * | 2021-05-25 | 2021-08-17 | 天长市永泰密封材料有限公司 | Piston bulge scraping type sealant extruding cylinder |
| CN113624594A (en) * | 2021-07-08 | 2021-11-09 | 闫化玺 | Pipe fitting bending degree detection device that shocks resistance for automobile production can improve precision |
| CN114295469A (en) * | 2022-01-24 | 2022-04-08 | 浙江省交通运输科学研究院 | Annular clamping device for pipe tensile test and using method |
| CN114871664A (en) * | 2022-02-22 | 2022-08-09 | 苗艳 | Multifunctional welding tool |
| CN114871664B (en) * | 2022-02-22 | 2024-08-06 | 衡阳晨峰钢结构有限公司 | Multifunctional welding tool |
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