CN206540774U - A kind of steel pipe stretching device - Google Patents
A kind of steel pipe stretching device Download PDFInfo
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- CN206540774U CN206540774U CN201621352476.2U CN201621352476U CN206540774U CN 206540774 U CN206540774 U CN 206540774U CN 201621352476 U CN201621352476 U CN 201621352476U CN 206540774 U CN206540774 U CN 206540774U
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- steel pipe
- cushion block
- stretching device
- sample
- tensioning
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Abstract
The utility model is related to a kind of general material mechanical performance testing machine special purpose device, applied to material mechanics experiment device field, and such as steel pipe tensile property is tested, and can be especially useful for steel pipe stretching mechanical property testing, and in particular to a kind of steel pipe stretching device；Including a pair of tensioning chucks, a pair of alignment pins and a pair of semicircle cushion blocks, tensioning chuck is monoblock type, the cylindrical tail portion of tensioning chuck is connected with testing machine assembling, the sample fixing combination portion of tensioning chuck opens up the rectangular channel for installing tensile sample, correspondence is offered on two avris walls of rectangular channel through two fixed positioning holes, positioning hole is opened up in the symmetric position of two cushion blocks, after alignment pin is also cross the positioning hole on tensioning chuck and cushion block, make two circumferential ends of tensile sample respectively with tensioning chuck, connection forms a whole set of stretching device between cushion block, the draw direction of tensile sample and alignment pin it is axially vertical.
Description
Technical field
The utility model is related to a kind of general material mechanical performance testing machine special purpose device, applied to material mechanics experiment
Device field, such as steel pipe tensile property are tested, and can be especially useful for steel pipe stretching mechanical property testing, and in particular to a kind of steel
Pipe stretching device.
Background technology
At present, the used professional drawing pipe testing machine in laboratory is to use destruction pipe geometry, in axial direction local
Materials piece, then axial tension tubing, the two ends passed through with the axial coupons of stretching steel pipe produce frictional force to clamp.Existing
In the tension test for having specialty, existing Steel Tube Tensile Test machine is only in axial tension, it is impossible to radial drawing, and can only locally take
Sample, so as to cause the steel pipe during tension test to be destroyed, and causes the wave of the steel pipe test material of a suitable segment length
Take.Examined especially for the mechanics of welded tube, it is impossible to examine the mechanical property of commissure.
Utility model content
The purpose of this utility model is to overcome the shortcomings of existing use technology, and provides a kind of steel pipe stretching device, is applied to
On cupping machine with displacement transducer and mechanics sensor, it is adaptable to which, to the various stretching experiments of steel pipe, it can be substituted
Existing professional drawing pipe testing machine, changes original device, draw direction and force way, tubing is not rubbed
Power, but pressure between sample inner surface and cushion block outer round surface is as taking oil lubrication between pulling force, and sample and cushion block,
Make in drawing process, sample can adjust centering naturally, it is ensured that the stress on sample both sides is equal.Experiment only needs to conventional ten thousand
Energetics testing machine, is that the mechanics performance determining of steel pipe tensile sample is provided convenience, and ring specimen ensure that the complete of steel pipe
Whole property, waste of materials and does not destroy tubing.
In order to reach the purpose of above-mentioned utility model creation, the utility model uses following technical proposals：
A kind of steel pipe stretching device, including a pair of tensioning chucks, a pair of alignment pins and a pair of semicircle cushion blocks, tensioning chuck
One, the circle of tensioning chuck are formed by the cylindrical tail portion and sample fixed position of tensioning chuck for monoblock type, i.e. tensioning chuck
Cylindricality afterbody is connected with testing machine assembling, and the sample fixing combination portion of tensioning chuck opens up the rectangular channel for installing tensile sample,
The two ends of cushion block, tensile sample can be made to be arranged in rectangular channel, correspondence is offered on two avris walls of rectangular channel through fixation
Two positioning holes, open up positioning hole in the symmetric position of two cushion blocks, alignment pin is also cross on tensioning chuck and cushion block
After positioning hole, two circumferential ends of tensile sample are made to be connected a whole set of stretching device of formation between tensioning chuck, cushion block respectively,
The draw direction of tensile sample and alignment pin it is axially vertical.The utility model steel pipe stretching device is applied to various types of draw
The tension test of testing machine is stretched, it can carry out various tension tests to steel pipe, and it can substitute existing drawing pipe testing machine,
Original device, draw direction and force way are changed, makes tubing not by skin-friction force, but rely on the support force of cushion block
Steel pipe sample is set circumferentially to deform, it only needs to conventional omnipotent mechanics machine, and sample ensure that the complete new property of steel pipe,
Waste of materials and tubing is not destroyed.
Preferably, described cushion block and tensile sample use oil lubrication, and both can adjust pair naturally in drawing process
In.
Preferably, form gap between the positioning hole on the alignment pin and cushion block to coordinate, its gap is preferably dimensioned to be 0.1
~0.3mm.
Preferably, the clearance distance between the two side walls and cushion block of the rectangular channel is more preferably less than 0.1~0.2mm.
Preferably, the internal diameter minimum dimension difference of the external diameter of described cushion block and tensile sample is preferably 3~7mm.
The utility model compared with prior art, has the following advantages that：
The utility model steel pipe stretching device can carry out the tension test of various samples to tubing, in drawing process,
The method of clamping, draw direction and force way of original fixture are changed, makes tubing not by skin-friction force, but rely on cushion block
Resistance deform tubular product sample, it only needs to conventional omnipotent mechanics machine, is that the mechanical property of steel pipe tensile sample is carried
Facility is supplied, and waste of materials and has not destroyed tubing, be particularly suitable for use in the tension test of welded tube, detect the mechanics of welded seam area
Performance.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Accompanying drawing 1 is the steel pipe stretching device of the utility model embodiment 1 clamping steel pipe working state schematic representation.
Accompanying drawing 2 is each component pieces decomposition texture schematic diagram of the steel pipe stretching device of the utility model embodiment 1.
Accompanying drawing 3 is the steel pipe stretching device diagrammatic cross-section of the utility model embodiment 1.
Accompanying drawing 4 is the alignment pin schematic diagram of the utility model embodiment 1.
Accompanying drawing 5 is the standard tensile specimen schematic diagram for matching the steel pipe stretching device of the utility model embodiment 1.
Label declaration：1st, tensioning chuck；11st, cylindrical tail portion；12nd, sample fixed part；2nd, alignment pin；3rd, cushion block；4th, draw
Stretch sample；5th, positioning hole；6th, rectangular channel；
Embodiment
The utility model is described in further detail with reference to embodiment, following examples are to the utility model
Explanation and the utility model is not limited to following examples.
Embodiment 1：
In the present embodiment, referring to Fig. 1~Fig. 5, a kind of steel pipe stretching device, including one group of tensioning chuck 1, one group of positioning
Pin 2 and one group of cushion block 3, tensioning chuck 1 are that monoblock type, i.e. tensioning chuck 1 are consolidated by the cylindrical tail portion 11 and sample of tensioning chuck
Determine position 12 and form one, tensioning chuck 1 is connected by the cylindrical tail portion of tensioning chuck with testing machine assembling, tensioning chuck
Sample fixing combination portion opens up the rectangular channel 6 for installing tensile sample, and cushion block 3, the two ends of tensile sample 4 can be made to be arranged on rectangular channel 6
It is interior, correspondence is offered on two avris walls of rectangular channel 6 through fixed positioning hole 6, is opened up in the symmetric position of two cushion blocks
Positioning hole 5, alignment pin 2 makes two circumferential ends of tensile sample 4 also cross the positioning hole 5 on tensioning chuck 1 and cushion block 3
The a whole set of stretching device of formation, draw direction and the alignment pin 2 of tensile sample 4 are connected between tensioning chuck 1, cushion block 3 respectively
It is axially vertical.
In the present embodiment, the tensile sample 4 matched with steel pipe stretching device cuts into the sample of any width.This reality
A tensioning chuck for steel pipe stretching device 1 is applied for monoblock type, the cylindrical tail portion of tensioning chuck 1 is arranged on cupping machine, drawn
The width of the rectangular channel 6 for the other end stretched is adapted to the thickness of the tensile sample 4 of steel pipe shape.Tensioning chuck 1 and in rectangle
Correspondence is offered on two avris walls of groove 6 through fixed positioning hole 6, make two circumferential ends of tensile sample 4 respectively with drawing
Stretch and coordinate simultaneously with alignment pin 2 between chuck 1, the three of cushion block 3, just can so carry out tension test.In drawing process, positioning
Pin 2 and cushion block 3 can produce very big resistance, to meet the tension test requirement of the high sample of tensile strength, be particularly suitable for use in each
The matching used stretching device of type cupping machine tension test.
The present embodiment tensioning chuck 1 and the material of cushion block 3 use Cr12MoV mould steel, and cushion block 3 only needs Quenching Treatment to make
Need after Quenching Treatment that tempered processing could be used again with, tensioning chuck 1, the material of alignment pin 2 uses common GCr15 bearings
Steel.
Embodiment two：
The present embodiment is substantially the same manner as Example 1, is particular in that：
In the present embodiment, the external diameter of cushion block 3 is less than 3~7mm with the internal diameter minimum dimension difference of tensile sample 4, is so difficult
Stress concentration is produced, it is possible to prevente effectively from the experiment abberation caused due to sample inwall out-of-flatness, tension test more they tends to static state
Stretching.
Embodiment three：
In the present embodiment, clearance distance and positioning hole 5, alignment pin 2, drawing between two parallel side walls of rectangle square groove 6
Stretch sample 4, the size of cushion block 3 can be adjusted arbitrarily, the stretching examination of the superhigh intensity steel pipe of different application in reality can be met
The detection tested.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Title etc. can be different.The equivalent or simple change that all construction, feature and principles according to described in the utility model inventional idea are done,
In the protection domain for being included in the utility model patent.The utility model person of ordinary skill in the field can be to being retouched
The specific embodiment stated is made various modifications or supplement or substituted using similar mode, without departing from the utility model
Structure or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
1. a kind of steel pipe stretching device, it is characterised in that：Described steel pipe stretching device includes：A pair of tensioning chucks (1), a pair
Alignment pin (2) and a pair of cushion blocks (3),
Described tensioning chuck (1) forms one by the cylindrical tail portion (11) and sample fixed position (12) of tensioning chuck,
The sample fixed position (12) opens up the rectangular channel (6) for installing tensile sample (4)；Cushion block (3), tensile sample (4) two
End is arranged in rectangular channel (6)；
Correspondence is offered on two avris walls of the rectangular channel (6) through fixed positioning hole (5), in the symmetrical position of two cushion blocks
Put and open up positioning hole, alignment pin (2) makes tensile sample (4) also cross the positioning hole (5) on tensioning chuck (1) and cushion block (3)
Two circumferential ends be connected between tensioning chuck (1), cushion block (3) a whole set of stretching device of formation respectively, tensile sample (4)
Draw direction is axially vertical with alignment pin (2).
2. steel pipe stretching device according to claim 1, it is characterised in that：Described cushion block (3) is adopted with tensile sample (4)
With oil lubrication, and both can be adjusted in naturally in drawing process.
3. steel pipe stretching device according to claim 2, it is characterised in that：On described alignment pin (2) and cushion block (3)
Form gap between positioning hole (5) to coordinate, its gap size is 0.1~0.3mm.
4. steel pipe stretching device according to claim 1, it is characterised in that：Two side walls of described rectangular channel (6) with
Clearance gap between cushion block (3) is 0.1~0.2mm.
5. according to any described steel pipe stretching device of Claims 1-4, it is characterised in that：The external diameter of described cushion block (3) with
The internal diameter minimum dimension difference of tensile sample (4) is 3~7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621352476.2U CN206540774U (en) | 2016-12-11 | 2016-12-11 | A kind of steel pipe stretching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621352476.2U CN206540774U (en) | 2016-12-11 | 2016-12-11 | A kind of steel pipe stretching device |
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| Publication Number | Publication Date |
|---|---|
| CN206540774U true CN206540774U (en) | 2017-10-03 |
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ID=59937286
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621352476.2U Active CN206540774U (en) | 2016-12-11 | 2016-12-11 | A kind of steel pipe stretching device |
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| CN (1) | CN206540774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769458A (en) * | 2016-12-11 | 2017-05-31 | 华电电力科学研究院 | Steel pipe stretching device |
-
2016
- 2016-12-11 CN CN201621352476.2U patent/CN206540774U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769458A (en) * | 2016-12-11 | 2017-05-31 | 华电电力科学研究院 | Steel pipe stretching device |
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