CN201697843U - Quantitative tension and compression testing device - Google Patents
Quantitative tension and compression testing device Download PDFInfo
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- CN201697843U CN201697843U CN2010202129461U CN201020212946U CN201697843U CN 201697843 U CN201697843 U CN 201697843U CN 2010202129461 U CN2010202129461 U CN 2010202129461U CN 201020212946 U CN201020212946 U CN 201020212946U CN 201697843 U CN201697843 U CN 201697843U
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Abstract
The utility model relates to a quantitative tension and compression testing device, which belongs to the technical field of material tests. The device comprises a fixed base, a supporting frame, a load supporting frame, a quantitative tension and compression rod, and three fixed pulleys. The device has a simple structure, can be matched with other testing instruments, has strong expansibility and applicability, and skillfully arranges the positions of the three fixed pulleys and the length proportion of the tension and compression rod by adopting geometric principle and lever principle to realize high test accuracy and large loading moment. The positions of the three fixed pulleys are required to be in an identical circular arc relative to a round pin in the middle of a quantitative loading rod, and when weights are quantitatively loaded, the three fixed pulleys still keep in an identical circle center, so as to fully guarantee the loading accuracy. The length ratio of the quantitative loading rod A to the quantitative loading rod B determines the proportion of the loading moments.
Description
Technical field
The utility model belongs to the material test technical field, and a kind of quantitative tension and compression material test mechanism simple in structure particularly is provided.
Background technology
Along with the development of industrial technology, more and more higher to the various mechanical property requirements of material, this just requires material is accurately tested, and has improved accordingly the experimental apparatus performance demands.At present, this kind equipment mainly is counterweight formula constant load cupping machine (or system controlled by computer material stretch test machine or universal testing machine) and proving ring (or spring assembly).The former tests accurately, but equipment is relatively more expensive and occupation of land is big, carries and lay very inconvenient; The latter is simple in structure, price is low, be fit to bulge test, but the measuring accuracy of device is too low, can not satisfy testing requirements under a lot of situations.
Present existing technology has State Intellectual Property Office's Granted publication number: CN200982938Y, patent name: a kind of spring tension and compression testing machine; Granted publication number: CN200986512Y, patent name: spring tension and compression testing machine; This disclosed two kinds of utility model patents test accurately, but equipment manufacturing cost is expensive and take up an area of greatly, uses and need when maintenance cost height, test tester's operation of will door, limits its application in occasion necessarily.
In the present disclosed Material Testing Machine, some technology are all at some specific areas and particular aspects design, and therefore using also has certain limitation.The utility model on this basis utility model material quantitative tension and compression mechanism, precision height not only, and device is simple, extended application is strong, and very big use value is arranged.
Summary of the invention
The utility model provides a kind of quantitative tension and compression device, it can measure the size of the suffered load of material accurately, and this apparatus structure is simple, can cooperate other testing tool to use, extended application is strong, and this device utilizes the position of geometrical principle and three fixed pulleys of the ingenious arrangement of lever principle and the length ratio of strut and tie to realize that very high measuring accuracy and bigger loading add square.
This device is made up of firm banking, support pedestal and loading support section, and support pedestal and loading support section lay respectively at the two ends of firm banking.The support pedestal top is provided with trip bolt, and effect is that test specimen is applied fixing hinged location, and the support pedestal middle part is provided with pin-and-hole, is used for fixing test specimen; Loading support section forms by loading support pedestal, quantitative load bar, guide runner and horizontal guide slot, with the pin-and-hole of bearing pin quantitative load bar is fixed in the vertical cavity of loading support pedestal by quantitative load bar middle part, make quantitative load bar in loading the support pedestal cavity, in the certain angle scope, do oscillating motion around bearing pin, quantitatively the load bar upper end is along being to slide on the circular arc in the center of circle with the bearing pin, quantitatively the load bar lower end part becomes hammerhead shape to be positioned at guide runner inside, makes the quantitative load bar moment certain to the guide runner effect.Guide runner is positioned at the horizontal cavity that loads support pedestal, it can move along horizontal direction, pass horizontal guide slot, guide runner and the test specimen that loads on the support pedestal with bearing pin, drive the guide runner move left and right when making quantitative load bar do swing test specimen is realized tension and compression.
In the said apparatus, quantitatively the load bar upper end is along being that the implementation of sliding on the circular arc in the center of circle is with the bearing pin: second fixed pulley is fixed on quantitative load bar upper end, it is on the circular arc in the center of circle that second fixed pulley, first fixed pulley and the 3rd fixed pulley are positioned at the bearing pin, first fixed pulley and the 3rd fixed pulley are fixing to load on the support pedestal, and three fixed pulleys connect by wire.Wire one end is fixed on second pulley during tension test, walks around the loading of first pulley and can realize tension test, and wire one end is fixed on second pulley during compression test, walks around the loading of the 3rd pulley and can realize compression test.
As shown in Figure 2, the length ratio of quantitative load bar A and B has determined the size of loading moment ratio.Three fixed pulley positions must be relatively be positioned on the same circular arc with the quantitative pin hole at load bar middle part, and when loading action, three fixed pulleys still keep on the same center of circle, so that fully guarantee loading accuracy.
Quantitative tension and compression operating principle: at first will load support pedestal by marking closely screw retention on firm banking, and then test specimen one end will be fixed on the pin-and-hole.In the gathering sill of other end fixed placement in loading support pedestal with workpiece, and pass guide runner with bearing pin through gathering sill test specimen is fixed.Workpiece is moved in gathering sill with guide runner.Draw or press around being loaded as to change in the difference of three fixed pulleys by wire, quantitatively the load bar upper end is stressed after bearing pin, promotes guide runner as the centre of gyration moves to the left and right, realizes the tension and compression of test specimen are loaded.In the loading procedure three pulleys all the time with bearing pin as the centre of gyration, so fully guaranteed the control of the precision of loading moment.And the big I of moment is determined by the ratio of A and B.
Description of drawings
The structured flowchart and the description of drawings of specific embodiment of the utility model are as follows:
Fig. 1 quantitative tension and compression testing device one-piece construction figure
Fig. 2 quantitative tension and compression loads the support partial cross sectional views
Fig. 3 loads the support section cross sectional plan view
1, trip bolt; 2, support pedestal; 3, test specimen; 4, firm banking; 5, pin-and-hole; 7, load support pedestal; 8, first fixed pulley; 9, second fixed pulley; 10, the 3rd fixed pulley; 11, horizontal guide slot 12, guide runner; 13, holding screw; 14, quantitative load bar; 15, bearing pin; Load support section I.
Specific embodiments
Described the utility model loads the support partial cross sectional views by Fig. 1 Material Testing Machine one-piece construction figure, Fig. 2 quantitative tension and compression.
Its load mode loads for the counterweight formula.
The concrete function implementation of this test unit is as follows:
Quantitatively stretch and load course of action: at first will load support machine 7 and be fixed in relevant position on the firm banking 4 by marking closely screw 13, then test specimen 3 one ends are fixed on the pin-and-hole 5, if experiment condition loads for realizing hinged test specimen, then be fixed on the pin-and-hole 6, otherwise test specimen 3 is fixed on the pin-and-hole 5.In the gathering sill of other end fixed placement in loading support pedestal 7 with workpiece, and it is fixing with test specimen 3 to pass guide runner 12 with bearing pin through gathering sill.Workpiece 3 is moved in gathering sill with guide runner 12.Load mode is to be fixed on second fixed pulley 9 by wire one end during stretching, the other end adds counterweight after walking around first fixed pulley 8, quantitatively the stressed after bearing pin 15 in load bar 14 upper ends is as the centre of gyration, promoting guide runner 12 moves right, because guide runner 12 is fixed together through bearing pin and test specimen, so apply stretch force moment to test specimen, realizing stretching loads.Since in the loading procedure second fixed pulley 9 and first fixed pulley 8 all the time with bearing pin 15 as the centre of gyration, so fully guaranteed the precision of loading moment.And the big I of moment is determined by the ratio of A and B.
Quantitative compression-loaded course of action: at first will load support machine 7 and be fixed in relevant position on the firm banking 4 by marking closely screw 13, then test specimen 3 one ends are fixed on the pin-and-hole 5, if experiment condition loads for realizing hinged test specimen, then be fixed on the pin-and-hole 6, otherwise test specimen 3 is fixed on the pin-and-hole 5.In the gathering sill of other end fixed placement in loading support pedestal 7 with workpiece, and it is fixing with test specimen 3 to pass guide runner 12 with bearing pin through gathering sill.Workpiece 3 is moved in gathering sill with guide runner 12.Load mode is to be fixed on second fixed pulley 9 by wire one end during stretching, the other end adds counterweight after walking around the 3rd fixed pulley 10, quantitatively the stressed after bearing pin 15 in load bar 14 upper ends is as the centre of gyration, promoting guide runner 12 is moved to the left, because guide runner 12 is fixed together through bearing pin and test specimen, so apply compression moment to test specimen, realize compression-loaded.Since in the loading procedure second fixed pulley 9 and the 3rd fixed pulley 10 all the time with bearing pin 15 as the centre of gyration, so fully guaranteed the precision of loading moment.And the big I of moment is determined by the ratio of A and B.
Claims (3)
1. quantitative tension and compression testing device is characterized in that: described device is by firm banking (4), support pedestal (2) and load support section (I) and forms, and support pedestal (2) and loading support section (I) lay respectively at the two ends of firm banking (4); Support pedestal (2) top is provided with trip bolt (1), and effect is that test specimen (3) is applied fixing hinged location, and support pedestal (2) middle part is provided with pin-and-hole (5), is used for fixing test specimen (3); Load support section (I) by loading support pedestal (7), quantitative load bar (14), guide runner (12) and horizontal guide slot (11) are formed, with the pin-and-hole of bearing pin (15) quantitative load bar (14) is fixed in the vertical cavity of loading support pedestal (7) by quantitative load bar (14) middle part, make quantitative load bar (14) in loading support pedestal (7) cavity, in the certain angle scope, do oscillating motion around bearing pin (15), quantitatively load bar (14) upper end is along being to slide on the circular arc in the center of circle with bearing pin (15), quantitatively load bar (14) lower end part becomes hammerhead shape to be positioned at guide runner (12) inside, makes quantitative load bar (14) to the certain moment of guide runner (12) effect; Guide runner (12) is positioned at the horizontal cavity that loads support pedestal (7), it can move along horizontal direction, pass horizontal guide slot (11), guide runner (12) and the test specimen (3) that loads on the support pedestal with bearing pin, drive guide runner (12) move left and right when making quantitative load bar (14) do swing test specimen (3) is realized tension and compression.
2. quantitative tension and compression testing device according to claim 1, it is characterized in that: described quantitative load bar (14) upper end is along being that the implementation of sliding on the circular arc in the center of circle is with bearing pin (15): second fixed pulley (9) is fixed on quantitative load bar (14) upper end, it is on the circular arc in the center of circle that second fixed pulley (9), first fixed pulley (8) and the 3rd fixed pulley (10) are positioned at bearing pin (15), first fixed pulley (8) and the 3rd fixed pulley (10) are fixing to load on the support pedestal (7), and three fixed pulleys connect by wire; Wire one end is fixed on second pulley (9) during tension test, walks around first pulley (8) loading and can realize tension test, and wire one end is fixed on second pulley (9) during compression test, walks around the 3rd pulley (10) loading and can realize compression test.
3. quantitative tension and compression testing device according to claim 1, described quantitative tension and compression testing device, it is characterized in that: go up the size that the ratio of A and B changes loading moment by changing described quantitative load bar (14), thereby realize realizing bigger loading moment with less moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202129461U CN201697843U (en) | 2010-06-02 | 2010-06-02 | Quantitative tension and compression testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202129461U CN201697843U (en) | 2010-06-02 | 2010-06-02 | Quantitative tension and compression testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201697843U true CN201697843U (en) | 2011-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202129461U Expired - Lifetime CN201697843U (en) | 2010-06-02 | 2010-06-02 | Quantitative tension and compression testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201697843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881716A (en) * | 2010-06-02 | 2010-11-10 | 江苏大学 | Quantitative tension and compression testing device |
-
2010
- 2010-06-02 CN CN2010202129461U patent/CN201697843U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881716A (en) * | 2010-06-02 | 2010-11-10 | 江苏大学 | Quantitative tension and compression testing device |
| CN101881716B (en) * | 2010-06-02 | 2012-06-20 | 江苏大学 | Quantitative tension and compression testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20120620 |