CN102818764B - Tearing-striping testing device for electric-melting saddle-shaped pipe - Google Patents
Tearing-striping testing device for electric-melting saddle-shaped pipe Download PDFInfo
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- CN102818764B CN102818764B CN201210280336.9A CN201210280336A CN102818764B CN 102818764 B CN102818764 B CN 102818764B CN 201210280336 A CN201210280336 A CN 201210280336A CN 102818764 B CN102818764 B CN 102818764B
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- shaped pipe
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Abstract
The invention discloses a tearing-striping testing device for an electric-melting saddle-shaped pipe. The tearing-striping testing device is characterized by comprising a clamp and a drawing and connecting mechanism, wherein the clamp comprises a base and a movable side plate; the base is provided with a first clamping knife; the movable side plate is provided with a second clamping knife; the base and the movable side plate are respectively provided with a connecting fastener; the connecting fasteners lock the base and the movable side plate so as to enable the first clamping knife and the second clamping knife to clamp a tested sample; and the tested sample is fixed together with the drawing and connecting mechanism.
Description
Technical field
The present invention relates to a kind of pipe fitting and tear and peel off proving installation, particularly a kind of electric-melting saddle-shaped pipe fitting is torn and is peeled off proving installation.
Background technology
Regulation according to special safety equipment technical manual TSG D2002-2006 < < combustion gas with polyethylene pipe solder technology standard > >, the electric-melting saddle-shaped pipe fitting of reply DN>225 is torn disbonded test, by observing the brittle rupture situation of face of weld, to evaluate the welding technology of electric-melting saddle-shaped pipe fitting.
Equally, according to the 3rd part of European standard EN 1555-3:2010 < < tygon (PE) piping system for combustion gas: the requirement of pipe fitting > >, reply electric-melting saddle-shaped pipe fitting is torn disbonded test to judge its strength of joint, and method of testing is according to ISO 13956.
In the middle of gas leakage accident investigation, if find, leak while occurring in saddle-type pipe position or welding and occur extremely, conventionally adopt saddle-type pipe is torn to (peeling off) from tubing position, observe the situation of face of weld, as contain impurity, brittle rupture, wire is mobile etc., for judgement accident occurrence cause, is very helpful.
For above-mentioned three kinds of situations, all relate to the disbonded test of tearing of electric-melting saddle-shaped pipe fitting, after welding, pipe fitting is peeled off from tubing position.
In TSG D2002-2006 < < combustion gas, with the annex H < < of polyethylene pipe solder technology standard > >, tear in disbonded test method > >, have the tear test jig model that is mentioned to a kind of electric melting pipe fittings, it includes jig and lower jig.Before tear test, need first sample to be processed, cut-out pipe fitting forms semicircular, to be applicable to upper jig, pipe fitting is applied to pulling force.In test, lower jig and mandrel are fixed tubing, and upper jig applies tension to pipe fitting, to realize pipe fitting, from tubing position, tear gradually.The main development and Design of carrying out device with reference to technology recited above of other pipe fitting manufacturer.
But, adopt above-mentioned proving installation test to have following shortcoming:
One, upper jig applies tension to pipe fitting, pipe fitting is first torn from edges at two ends simultaneously, tends to occur that edge tears after perk in application, and upper jig is easier to slippage from pipe fitting, cause pipe fitting to fail to tear completely from tubing, then need to be by other stage property.
Two, pipe fitting two ends are simultaneously stressed, and lifting surface area is larger, and under drawing machine constant speed stretching action, the tension applying is larger, and the tensile load of jig and drawing machine is had relatively high expectations.
Three, on the inapplicable market of this jig, common radian is less than the electric-melting saddle-shaped pipe fitting of semicircle.
Four, lower jig is fixedly tubing use, and structure is more complicated, and not general to each size pipe.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of electric-melting saddle-shaped pipe fitting and tear and peel off proving installation, under less action of pulling stress, electric-melting saddle-shaped pipe fitting is peeled off relatively easily from tubing position, and simple in structure, be applicable to the electric-melting saddle-shaped pipe fitting of plurality of specifications.
The technical solution adopted for the present invention to solve the technical problems is:
Electric-melting saddle-shaped pipe fitting is torn and is peeled off proving installation, it is characterized in that: comprise fixture and traction bindiny mechanism, described fixture comprises pedestal and mobile side board, described pedestal is provided with the first clamping cutter, described mobile side board is provided with the second clamping cutter, described pedestal and mobile side board are provided with connection securing member, and this connection securing member makes the first clamping cutter and second clamp cutter by locking pedestal and mobile side board to clamp sample, and this sample is fixed with traction bindiny mechanism.
Described base bottom surface is provided with mounting hole, and pedestal side is provided with the inserted link hole connecting with mounting hole.
Described first clamps cutter is fixed on pedestal by screw.
Described second clamps cutter is fixed on mobile side board by screw.
Described pedestal is provided with guide surface, and this guide surface is provided with positive stop lug boss, and described mobile side board is arranged on guide surface, and can move and to pass through positive stop lug boss spacing along guide surface.
Described traction bindiny mechanism comprises towbar and traction rope.
Described traction bindiny mechanism also comprises internal lining pipe.
The invention has the beneficial effects as follows: the present invention is fixed on drawing machine by the pedestal in fixture; By first in fixture, clamp cutter and second and clamp the saddle type limit that cutter clamps saddle-type pipe in sample; By traction, bindiny mechanism makes the tubing in sample be connected with the hoisting cross beam of drawing machine, adopts the advantage of said structure test to be:
One, saddle-type pipe can be peeled off completely from pipe fitting:
Two, tear process from pipe fitting one end margin, lifting surface area reduces, and to the load of fixture and drawing machine, requires lower;
Three, fixture of the present invention is applicable to overall dimension, the electric-melting saddle-shaped pipe fitting of common type;
Four, towbar is that fixedly tubing is partly used, simple in structure, easy to operate, general to each size tubing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the schematic diagram being applied on drawing machine of the present invention;
Fig. 2 is the front elevation of fixture of the present invention;
Fig. 3 is the side view of fixture of the present invention;
Fig. 4 is the vertical view of fixture of the present invention.
Embodiment
Referring to figs. 1 through Fig. 4, the invention discloses a kind of electric-melting saddle-shaped pipe fitting tears and peels off proving installation, comprise fixture 1 and traction bindiny mechanism 2, fixture 1 comprises pedestal 3 and mobile side board 7, pedestal 3 is arranged on the base of drawing machine 17, its concrete fixed form is: pedestal 3 bottom surfaces are provided with mounting hole 4, and pedestal 3 sides are provided with the inserted link hole 5 connecting with mounting hole 4, and the base of drawing machine 17 is provided with the projection (not shown) matching with mounting hole 4, projection is provided with circular hole, pedestal 3 is placed on projection by mounting hole 4, rotating basis 3 makes inserted link hole 5 corresponding with circular hole, insert fixing latch in inserted link hole 5 and circular hole, thereby pedestal 3 is fixed on the base of drawing machine 17, above-mentioned fixed form is simple in structure, fix and pull down all very convenient, certain above-mentioned fixed form does not form the restriction to the application, this device also can adopt other fixed forms, as adopt screw that pedestal 3 is fixed on the base of drawing machine 17.
In this specific embodiment, pedestal 3 main bodys are rectangular parallelepiped, on the end face of rectangular parallelepiped, there is notch cuttype boss, first clamps the top that cutter 6 is arranged at notch cuttype boss, and mobile side board 7 is arranged on the end face of rectangular parallelepiped, mobile side board 7 is provided with the second clamping cutter 8, in order to make sample clamped time, mobile side board 7 can steadily move, and for fear of the excessive locking to sample; Pedestal 3 is provided with guide surface, and this guide surface is provided with positive stop lug boss 9, and mobile side board 7 is arranged on guide surface, and can move and to pass through positive stop lug boss 9 spacing along guide surface, by guide surface, can make mobile side board 7 steadily move; By positive stop lug boss 9, can avoid the excessive locking to sample.Guide surface in the application is in fact to overlap with the end face of rectangular parallelepiped, and is the same face, and positive stop lug boss 9 belongs to a part for notch cuttype boss.
As shown in the figure, pedestal 3 and mobile side board 7 are provided with connection securing member, and this connection securing member makes the first clamping cutter 6 and second clamp cutter 8 by locking pedestal 3 and mobile side board 7 and clamps sample, and this sample is fixing with traction bindiny mechanism 2, in this specific embodiment, on pedestal 3 and mobile side board 7, be respectively equipped with three through holes 10, and the through hole on pedestal 3 10 is corresponding respectively with the through hole 10 on mobile side board 7, in two corresponding through holes 10, be equipped with bolt 11, one end lock of bolt 11 has nut, thereby just can make the first clamping cutter 6 and second clamp cutter 8 clamping samples by the turn of nut, said structure is simple, easy to use, certainly said structure does not form the restriction to the application, this structure also can adopt on pedestal 3 screw is set, then the mode of corresponding unthreaded hole is set on mobile side board 7, when screw screws in screw through unthreaded hole, equally also can make the first clamping cutter 6 and second clamp cutter 8 and clamp sample.In this specific embodiment, sample comprises saddle-type pipe 15 and the tubing 16 being connected with saddle-type pipe 15 by welding technology, and the first part that clamps cutter 6 and the second clamping cutter 8 clampings is the saddle type edge of saddle-type pipe 15, certain above-mentioned sample is the description of a concrete sample of multiple sample, and it does not form the restriction to the application yet.
As shown in the figure, the first clamping cutter 6 is fixed on pedestal 3 by screw; Second clamps cutter 8 is fixed on mobile side board 7 by screw; in said structure; pedestal 3, mobile side board 7 are made by metallic aluminium, can reduce fixture 1 weight, and the mechanical strength of clamping cutter is had relatively high expectations; by 45# steel, made; and through bakingout process, the protection of spraying paint after processing, thereby pedestal 3, mobile side board 7, the first clamping cutter 6 and the second clamping cutter 8 are all convenient to processing and can adopt respectively different materials; thereby reduction technology difficulty, save cost.
As shown in Figure 1, in this specific embodiment, traction bindiny mechanism 2 comprises towbar 12 and traction rope 13, and towbar 12 is arranged in tubing 16, and the two ends of towbar 12 are fixing with the hoisting cross beam 18 of drawing machine 17 by traction rope 13.In order to prevent the excessive wear of towbar 12 and tubing 16 and to prevent from skidding, traction bindiny mechanism 2 also comprises internal lining pipe 14, internal lining pipe 14 is arranged between towbar 12 and tubing 16, internal lining pipe 14 can adopt the flexible materials such as PE or polyurethane to make, the embodiment of above-mentioned traction bindiny mechanism 2 does not form the restriction to the application, and different designs can also be done according to different samples by traction bindiny mechanism 2.
Below the concrete operation step of this application of installation in experiment:
One, three bolts on locking pedestal, make the first clamping cutter and second clamp cutter the saddle type edge of saddle-type pipe are clamped, and sample is fixed on fixture;
Two, the mounting hole on pedestal aligns with the projection on drawing machine, inserts latch in inserted link hole and circular hole, thereby fixture is fixed on drawing machine base;
Three, in tubing, put into internal lining pipe and towbar, traction rope hangs on the hoisting cross beam of drawing machine top, and is enclosed within towbar two ends, and drawing machine forms an integral body, test unit installation with device;
Four, start drawing machine program, with the draw speed application of force of (100 ± 10) mm/min;
Five, loading, until some position of sample occurs completely separated or tears, checks the form that sample record destroy (interfacial separation, resistance wire coil are torn, tubing or pipe fitting surrender, surface brittleness cracking or flexible destruction);
Six, dismounting tensile test apparatus: unclamp three bolts on pedestal, thereby saddle-type pipe is untied from fixture.
Above-mentionedly just preferred embodiments more of the present invention are illustrated and described, but embodiments of the present invention are not restricted to the described embodiments, as long as it reaches technique effect of the present invention with essentially identical means, all should belong to protection scope of the present invention.
Claims (6)
1. electric-melting saddle-shaped pipe fitting is torn and is peeled off proving installation, it is characterized in that: comprise fixture and traction bindiny mechanism, described fixture comprises pedestal and mobile side board, described pedestal is provided with the first clamping cutter, described mobile side board is provided with the second clamping cutter, described pedestal and mobile side board are provided with connection securing member, and this connection securing member makes the first clamping cutter and second clamp cutter by locking pedestal and mobile side board and clamps sample, and this sample is fixed with traction bindiny mechanism, described pedestal is provided with guide surface, this guide surface is provided with notch cuttype positive stop lug boss, described mobile side board is arranged on guide surface, and can move and to pass through notch cuttype positive stop lug boss spacing along guide surface.
2. electric-melting saddle-shaped pipe fitting according to claim 1 is torn and is peeled off proving installation, it is characterized in that: described base bottom surface is provided with mounting hole, and pedestal side is provided with the inserted link hole connecting with mounting hole.
3. electric-melting saddle-shaped pipe fitting according to claim 1 is torn and is peeled off proving installation, it is characterized in that: described first clamps cutter is fixed on pedestal by screw.
4. electric-melting saddle-shaped pipe fitting according to claim 1 is torn and is peeled off proving installation, it is characterized in that: described second clamps cutter is fixed on mobile side board by screw.
5. electric-melting saddle-shaped pipe fitting according to claim 1 is torn and is peeled off proving installation, it is characterized in that: described traction bindiny mechanism comprises towbar and traction rope.
6. electric-melting saddle-shaped pipe fitting according to claim 5 is torn and is peeled off proving installation, it is characterized in that: described traction bindiny mechanism also comprises internal lining pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210280336.9A CN102818764B (en) | 2012-08-08 | 2012-08-08 | Tearing-striping testing device for electric-melting saddle-shaped pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210280336.9A CN102818764B (en) | 2012-08-08 | 2012-08-08 | Tearing-striping testing device for electric-melting saddle-shaped pipe |
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| Publication Number | Publication Date |
|---|---|
| CN102818764A CN102818764A (en) | 2012-12-12 |
| CN102818764B true CN102818764B (en) | 2014-04-09 |
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| CN201210280336.9A Active CN102818764B (en) | 2012-08-08 | 2012-08-08 | Tearing-striping testing device for electric-melting saddle-shaped pipe |
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Citations (7)
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|---|---|---|---|---|
| CN201066329Y (en) * | 2007-07-20 | 2008-05-28 | 北京工业大学 | A thin plate pre-tightening and locating and clamping device |
| CN201133894Y (en) * | 2007-12-28 | 2008-10-15 | 保定天威集团有限公司 | Heat bonding enamelling wire high-temperature bond strength experimental device |
| DE102008050652A1 (en) * | 2008-09-26 | 2010-04-15 | Technische Universität Dresden | Clamping tool for tensile testing machine, has oppositely lying chuck jaws which contain clamp holders, where clamp holders are arranged in mutually aligned manner and are clamped in respective ends of test sample |
| CN201622207U (en) * | 2010-01-09 | 2010-11-03 | 湖南吉利汽车部件有限公司 | Bolt tensile strength test clamp |
| CN201773040U (en) * | 2010-08-11 | 2011-03-23 | 西安建筑科技大学 | Original state steel plate/weld joint shearing test fixture |
| CN201803898U (en) * | 2010-09-01 | 2011-04-20 | 麦可罗泰克（常州）产品服务有限公司 | Tension measuring fixture |
| CN202793999U (en) * | 2012-08-08 | 2013-03-13 | 港华辉信工程塑料(中山)有限公司 | Electric smelting saddle type pipe fitting tearing and peeling test device |
-
2012
- 2012-08-08 CN CN201210280336.9A patent/CN102818764B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201066329Y (en) * | 2007-07-20 | 2008-05-28 | 北京工业大学 | A thin plate pre-tightening and locating and clamping device |
| CN201133894Y (en) * | 2007-12-28 | 2008-10-15 | 保定天威集团有限公司 | Heat bonding enamelling wire high-temperature bond strength experimental device |
| DE102008050652A1 (en) * | 2008-09-26 | 2010-04-15 | Technische Universität Dresden | Clamping tool for tensile testing machine, has oppositely lying chuck jaws which contain clamp holders, where clamp holders are arranged in mutually aligned manner and are clamped in respective ends of test sample |
| CN201622207U (en) * | 2010-01-09 | 2010-11-03 | 湖南吉利汽车部件有限公司 | Bolt tensile strength test clamp |
| CN201773040U (en) * | 2010-08-11 | 2011-03-23 | 西安建筑科技大学 | Original state steel plate/weld joint shearing test fixture |
| CN201803898U (en) * | 2010-09-01 | 2011-04-20 | 麦可罗泰克（常州）产品服务有限公司 | Tension measuring fixture |
| CN202793999U (en) * | 2012-08-08 | 2013-03-13 | 港华辉信工程塑料(中山)有限公司 | Electric smelting saddle type pipe fitting tearing and peeling test device |
Non-Patent Citations (1)
| Title |
|---|
| 何建文 等.塑料管材和管件 公称外径大于或等于90mm的聚乙烯电熔组件的拉伸剥离试验.《中华人民共和国国家标准 GB/T 19808-2005/ISO 13954:1997》.中华人民共和国国家质量监督检验检疫总局/中国国家标准化管理委员会,2005,第1页第4段至第2页第2段以及图1和图2. * |
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| CN102818764A (en) | 2012-12-12 |
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