CN203224399U - Portable axial tensile stress loading device - Google Patents
Portable axial tensile stress loading device Download PDFInfo
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- CN203224399U CN203224399U CN 201320180412 CN201320180412U CN203224399U CN 203224399 U CN203224399 U CN 203224399U CN 201320180412 CN201320180412 CN 201320180412 CN 201320180412 U CN201320180412 U CN 201320180412U CN 203224399 U CN203224399 U CN 203224399U
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- tensile stress
- slotted eye
- axial tensile
- bearing frame
- nut
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Abstract
The utility model relates to a portable axial tensile stress loading device. The portable axial tensile stress loading device comprises a rectangular bearing framework, wherein one or more hollow structures which are in parallel arranged are arranged inside the rectangular bearing framework; slot holes are symmetrically formed at middle axis positions of inner upper and lower bottoms of the hollow structures; an upper chuck is sleeved in the upper slot hole; a lower chuck is sleeved in the lower slot hole; one threaded end of the upper chuck is sleeved with a loading nut by penetrating through the slot hole above the framework; and one threaded end of the lower chuck is sleeved with a locking nut by penetrating through the slot hole below the framework. The portable axial tensile stress loading device is suitable for loading tensile stress of tested pieces with rectangular sections and circular sections, capable of realizing simultaneously testing one or more tested pieces and in particular suitable for the stress corrosion test research under circulating conditions including a long-term exposure test in the natural environment, a wetting-drying alternation condition of a laboratory and the like.
Description
Technical field
The utility model relates to a kind of drawing stress charger, particularly a kind of portable axial tensile stress charger for research material stress corrosion opening cracking maleate sensitivity under the natural environmental condition and under the cycling condition such as laboratory alternation of wetting and drying.
Background technology
Corrosion environment can cause the performance degradation of material under the stress, especially material is under the environment of temperature, moisture fluctuation, its surface is in the alternation of wetting and drying cyclical variation, this corrosion that changes the energy accelerated material, often make material rupture suddenly under the situation of permissible stress in working stress, be stress corrosion crack, engineering structure is caused fatal harm.Therefore, accurately the stress corrosion opening cracking maleate sensitivity of evaluating material is most important for guaranteeing to equip (product) safe and reliable use.
At present, tensile stress etching test is one of method in common of a kind of assessment material stress corrosion opening cracking maleate sensitivity, and its stress loading type commonly used comprises: constant load, constant strain, increment of load lotus, increase strain etc.Tradition constant load drawing stress loads and need finish by large-scale specialized equipment, its tensile stress etching apparatus generally comprises and loads electromechanics, turbine and worm speed reduction unit, support frame, environment container, mechanics sensor etc., not only volume is big, cost is high for this device, be difficult for moving, once can only carry out the single test that is subjected to test specimen, and the tensile stress etching test of single corrosion environment under the chamber condition that can only experimentize, be not suitable for the stress corrosion (cracking) test of cycling condition such as laboratory alternation of wetting and drying and outdoor atmospheric environment long term exposure.
Chinese patent " a kind of aluminium alloy tensile stress etching test unit " (CN 201803903 U) discloses a kind of aluminium alloy constant load tensile stress etching test unit under the laboratory condition, utilize pin be connected with spring by test specimen, apply permanent load, in being housed, the specific environment container of etchant solution carries out stress corrosion (cracking) test, it is big that this device has solved tensile stress etching test unit volume to a certain extent, the cost height, once can only carry out the single problem that is subjected to specimen test, but its complex structure, the cycling condition stress corrosion (cracking) tests such as chamber alternation of wetting and drying that can not experimentize also can't be competent at outdoor atmospheric environment long term exposure test.
Chinese patent " portable tensile stress etching test unit " (CN 2593182 Y) discloses a kind of stress corrosion testing device, utilize spring to apply axial constant load to being subjected to test specimen, stressed support four sides hollow out, can make and be exposed in the atmospheric environment by test specimen, when requiring in corrosive medium, to test, also need be subjected to the test specimen outside to install an airtight container additional.Though this device can carry out outdoor atmospheric environment long term exposure test, but can only carry out the single test that is subjected to test specimen at every turn, and in the test of laboratory tensile stress etching, because device can only be tested, therefore can't carry out cycling condition stress corrosion (cracking) tests such as laboratory alternation of wetting and drying in a kind of fixing corrosion environment.
The utility model content
The purpose of this utility model just provides a kind of portable constant strain axial tensile stress charger, both can satisfy cyclic test requirement such as long-term test and laboratory alternation of wetting and drying under the physical environment, can solve a plurality of problems that tested simultaneously by test specimen again.
The purpose of this utility model is to realize by such technical scheme, a kind of portable axial tensile stress charger, it is characterized in that: comprise the rectangle load-bearing frame, the middle part of described rectangle load-bearing frame is provided with more than one hollow structure, the axis position symmetry of going to the bottom on the described hollow structure inside has upper and lower slotted eye, be equipped with upper grip in the last slotted eye, be equipped with lower chuck in the following slotted eye, and screw thread one end of described upper grip passes the last slotted eye suit loading nut of described rectangle load-bearing frame; Screw thread one end of described lower chuck passes the following slotted eye suit set nut of described rectangle load-bearing frame.
Wherein said hollow structure is arranged in parallel, and the gauge length place that is subjected to test specimen that is installed between described upper grip and the described lower chuck connects extensometer, and described extensometer links to each other with the strain display with the stress display by cable, to show the situation of change of stress value.
To produce in order preventing from screwing the nut loading stress and to reverse and bending stress, described slotted eye down and last slotted eye are square slotted eye.
For can be fastening with the described test specimen and described loading nut or described set nut of being subjected to, one end of described upper grip and lower chuck is U-shaped mounting groove structure or internal thread hole structure, connecting the cross section respectively is the test specimen that is subjected to of rectangle or circle, and the other end is the round thread structure, with the screw-internal thread fit of nut.
In order to clamp the described test specimen that is subjected to, described rectangle load-bearing frame one side top and bottom all offer through hole, and the through hole of offering on the U-shaped groove of described through hole and upper grip and lower chuck and the shaft core position that is subjected to test specimen bare terminal end through hole firmly are connected the described test specimen that is subjected to described upper grip or described lower chuck by pin on same straight line.
In order to prevent producing bimetallic corrosion between the dissimilar metal, setting up insulating washer between described rectangle load-bearing frame and the described loading nut and between described rectangle load-bearing frame and the set nut.
In order to prevent loading nut loosening in the process of the test, between described loading nut and described insulating washer, also set up spring washer.
Owing to adopted technique scheme, the utlity model has following advantage:
1, the utility model applies a constant strain by screwing the loading nut to being subjected to test specimen, makes to be subjected to test specimen axially to bear constant drawing stress; The bare terminal end of last lower chuck can be U-shaped notch or internal thread hole, is applicable to that the cross section is that rectangle or the circular test specimen drawing stress that is subjected to load; The hollow design of rectangle load-bearing frame, make and to be exposed to fully in atmospheric environment or the various corrosive medium by test specimen to carry out stress corrosion (cracking) test, when especially carrying out alternation of wetting and drying, the test of many atmosphere cyclic corrosion, can directly charger be put into corrosion environment, be applicable to the tensile stress etching test under any environment.
2, the parallel connection design of the interior hollow structure of the utility model by the rectangle load-bearing frame can realize a plurality ofly testing when being subjected to test specimen; Utilize the good linear relation between elastic limit of material internal stress and the strain, guaranteed the accuracy that stress loads, loading accuracy reaches ± and 1.0%, be particularly suitable for the study of stress corrosion testing in the cycling conditions such as the test of physical environment long term exposure and laboratory alternation of wetting and drying.
3, simple in structure, the volume compact of the utility model, it is in light weight that (3 kg～5kg), cost are low.
Description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is subjected to test specimen stress state work synoptic diagram for the utility model embodiment's 1;
Fig. 3 is the structural representation of the utility model embodiment 2;
Fig. 4 is subjected to test specimen stress state work synoptic diagram for the utility model embodiment's 2;
Fig. 5 is the front view of the utility model embodiment 3;
Fig. 6 is the left view of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail; but utility model is not limited to present embodiment; any on the present embodiment essence spirit improvement or substitute, still belong to the utility model claim scope required for protection.
The cross section be installed be rectangle be subjected to test specimen 12A the time, the through hole of offering by rectangle load-bearing frame 1 one side top and bottom, with the through hole of offering on the U-shaped groove of upper grip 5, lower chuck 6 be subjected to test specimen 12 bare terminal end through holes, adopt pin 11 firmly be connected with upper grip 5, lower chuck 6 by test specimen 12, chuck end is U-shaped mounting groove structure, non-chuck end is the round thread structure, respectively with the screw-internal thread fit that loads nut and set nut.
Further referring to Fig. 2: during loading, with install be subjected to test specimen 12 the charger vertical fixing in special-purpose fastening base, extensometer 13 is installed on stretching is subjected to test specimen 12 gauge length places, extensometer 13 links to each other with strain display instrument 14B with stress display instrument 14A by cable.Adopt the digital display tubular key at the uniform velocity to screw the loading nut and load being subjected to test specimen, the stress that applies, strain value can be read from stress display instrument 14A and strain display instrument 14B.When strain reached the testing requirements of regulation, locking loaded nut 7, whole charger can be exposed in atmospheric environment or the various corrosive medium and carry out stress corrosion (cracking) test.
Embodiment 2: referring to Fig. 3: a kind of portable axial tensile stress charger, comprise rectangle load-bearing frame 1, the middle part of described rectangle load-bearing frame 1 is provided with a hollow structure 2, the axis position symmetry of going to the bottom on hollow structure 2 inside has the square slotted eye that right alignment is 0.003mm, be equipped with upper grip 5 in the last slotted eye 3, and screw thread one end of described upper grip 5 passes slotted eye 3 on the framework, suit insulating washer 9, spring washer 10 and loading nut 7; Be equipped with lower chuck 6 in the following slotted eye 4, and screw thread one end of described lower chuck 6 passes slotted eye 4 under the framework, suit insulating washer 9 and set nut 8.
The cross section is installed when being subjected to test specimen 12B, will be installed in the internal thread hole of upper grip 5, lower chuck 6 chuck end by test specimen 12 for circular, non-chuck end be the round thread structure, respectively with the screw-internal thread fit that loads nut 7 and set nut 8.
Further referring to Fig. 4: loading procedure is with embodiment 1.
Embodiment 3: referring to Fig. 5: a kind of portable axial tensile stress charger, comprise rectangle load-bearing frame 1, the inside of described rectangle load-bearing frame 1 is provided with two parallel connections and not connected hollow structure 2, the axis position symmetry of going to the bottom on each hollow structure 2 inside has the square slotted eye that right alignment is 0.003mm, be equipped with upper grip 5 in the last slotted eye 3, and screw thread one end of described upper grip 5 passes slotted eye 3 on the rectangle load-bearing frame 1, suit insulating washer 9, spring washer 10 and loading nut 7; Be equipped with lower chuck 6 in the following slotted eye 4, and screw thread one end of described lower chuck 6 passes slotted eye 4 suit insulating washers 9 and set nut 8 under the framework.
Install circularly when being subjected to test specimen 12C and being subjected to test specimen 12D, be subjected in the internal thread hole that test specimen is installed to upper grip 5, lower chuck 6 chuck end described, non-chuck end is the round thread structure, respectively with the screw-internal thread fit that loads nut 7 and set nut 8.
Further referring to Fig. 6: loading procedure is with embodiment 1.
Claims (6)
1. portable axial tensile stress charger, it is characterized in that: comprise rectangle load-bearing frame (1), the middle part of described rectangle load-bearing frame (1) is provided with more than one hollow structure (2), the axis position symmetry of going to the bottom on described hollow structure (2) inside has upper and lower slotted eye, be equipped with upper grip (5) in the last slotted eye (3), be equipped with lower chuck (6) in the following slotted eye (4), and screw thread one end of described upper grip (5) passes last slotted eye (3) the suit loading nut (7) of described rectangle load-bearing frame (1); Screw thread one end of described lower chuck (6) passes following slotted eye (4) the suit set nut (8) of described rectangle load-bearing frame (1).
2. portable axial tensile stress charger as claimed in claim 1, it is characterized in that: described hollow structure (2) is arranged in parallel.
3. portable axial tensile stress charger as claimed in claim 1 or 2 is characterized in that: describedly go up slotted eye (3) and following slotted eye (4) is square slotted eye.
4. portable axial tensile stress charger as claimed in claim 3, it is characterized in that: an end of described upper grip (5) and lower chuck (6) is U-shaped mounting groove structure or internal thread hole structure, and the other end is the round thread structure.
5. portable axial tensile stress charger as claimed in claim 4 is characterized in that: between described rectangle load-bearing frame (1) and the described loading nut (7), set up insulating washer (9) between described rectangle load-bearing frame (1) and the set nut (8).
6. portable axial tensile stress charger as claimed in claim 5 is characterized in that: set up spring washer between described loading nut and the described insulating washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180412 CN203224399U (en) | 2013-04-11 | 2013-04-11 | Portable axial tensile stress loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180412 CN203224399U (en) | 2013-04-11 | 2013-04-11 | Portable axial tensile stress loading device |
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| Publication Number | Publication Date |
|---|---|
| CN203224399U true CN203224399U (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320180412 Expired - Fee Related CN203224399U (en) | 2013-04-11 | 2013-04-11 | Portable axial tensile stress loading device |
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| CN (1) | CN203224399U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674826A (en) * | 2013-12-16 | 2014-03-26 | 武汉钢铁(集团)公司 | Method and equipment for periodic wheel immersion corrosion test under condition of constant pulling force |
| CN104749029A (en) * | 2015-03-23 | 2015-07-01 | 中国船舶重工集团公司第七二五研究所 | Constant-load tensile test device |
| CN104931372A (en) * | 2015-06-03 | 2015-09-23 | 中国石油大学(华东) | Experimental method for simulating stress corrosion of metal material under working conditions |
| CN105021455A (en) * | 2015-06-03 | 2015-11-04 | 中国石油大学(华东) | Experimental apparatus for simulating stress corrosion of metal material under actual working conditions |
| CN108036998A (en) * | 2017-12-14 | 2018-05-15 | 西安航天化学动力厂 | It is a kind of to determine stress/determine strain detection testing device |
| CN108279179A (en) * | 2018-01-31 | 2018-07-13 | 中国兵器工业第五九研究所 | Constant, the fatigue stress experimental rig of one kind and test method |
| CN108279162A (en) * | 2018-01-31 | 2018-07-13 | 中国兵器工业第五九研究所 | A kind of rubber seal pressure loading device and pressure-loaded test method |
| CN108333042A (en) * | 2017-12-07 | 2018-07-27 | 上海航天精密机械研究所 | A kind of spiral big stroke tensile loading device |
-
2013
- 2013-04-11 CN CN 201320180412 patent/CN203224399U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674826A (en) * | 2013-12-16 | 2014-03-26 | 武汉钢铁(集团)公司 | Method and equipment for periodic wheel immersion corrosion test under condition of constant pulling force |
| CN104749029A (en) * | 2015-03-23 | 2015-07-01 | 中国船舶重工集团公司第七二五研究所 | Constant-load tensile test device |
| CN104749029B (en) * | 2015-03-23 | 2017-10-13 | 中国船舶重工集团公司第七二五研究所 | A kind of constant load tensile test apparatus |
| CN104931372A (en) * | 2015-06-03 | 2015-09-23 | 中国石油大学(华东) | Experimental method for simulating stress corrosion of metal material under working conditions |
| CN105021455A (en) * | 2015-06-03 | 2015-11-04 | 中国石油大学(华东) | Experimental apparatus for simulating stress corrosion of metal material under actual working conditions |
| CN108333042A (en) * | 2017-12-07 | 2018-07-27 | 上海航天精密机械研究所 | A kind of spiral big stroke tensile loading device |
| CN108036998A (en) * | 2017-12-14 | 2018-05-15 | 西安航天化学动力厂 | It is a kind of to determine stress/determine strain detection testing device |
| CN108279179A (en) * | 2018-01-31 | 2018-07-13 | 中国兵器工业第五九研究所 | Constant, the fatigue stress experimental rig of one kind and test method |
| CN108279162A (en) * | 2018-01-31 | 2018-07-13 | 中国兵器工业第五九研究所 | A kind of rubber seal pressure loading device and pressure-loaded test method |
| CN108279162B (en) * | 2018-01-31 | 2020-09-15 | 中国兵器工业第五九研究所 | Rubber sealing ring pressure loading device and pressure loading test method |
| CN108279179B (en) * | 2018-01-31 | 2020-10-09 | 中国兵器工业第五九研究所 | Constant and fatigue stress test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model patent |
Correction item: Inventor Name Correct: Yang Hongya False: Yang Hongya Number: 40 Page: The title page Volume: 29 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Inventor Name Correct: Yang Hongya False: Yang Hongya Number: 40 Volume: 29 |
|
| ERR | Gazette correction | ||
| RECT | Rectification | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20160411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |