CN203069452U - Fixture for compression bar stability test of material mechanics multifunctional bedstand - Google Patents
Fixture for compression bar stability test of material mechanics multifunctional bedstand Download PDFInfo
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- CN203069452U CN203069452U CN 201320107798 CN201320107798U CN203069452U CN 203069452 U CN203069452 U CN 203069452U CN 201320107798 CN201320107798 CN 201320107798 CN 201320107798 U CN201320107798 U CN 201320107798U CN 203069452 U CN203069452 U CN 203069452U
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- support
- compression bar
- mechanics
- arrangement hinged
- hinged
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Abstract
The utility model relates to a fixture for a compression bar stability test of a material mechanics multifunctional bedstand. The fixture for the compression bar stability test of the material mechanics multifunctional bedstand comprises an upper V-shaped hinged support and a lower V-shaped hinged support, wherein the upper V-shaped hinged support is connected with a pull pressure sensor of the material mechanics multifunctional bedstand through a flange disc, the lower V-shaped hinged support is connected with a base of the material mechanics multifunctional bedstand through a flange disc, and a compression bar is installed between the upper V-shaped hinged support and the lower V-shaped hinged support. The fixture provided by the utility model is smart in structure design and is capable of realizing various rod end constraint and elongated compression bar stability tests by changing different accessories.
Description
One, technical field:
The utility model relates to the test unit that the material mechanical performance field tests is used, what be specifically related to is anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing.
Two, background technology:
In the engineering reality, because strut buckling brings the example of heavy losses too numerous to enumerate for engineering structure or machinery, the continuous development along with the strut stability theory has caused many engineering technical personnel's common concern to the experimental study of strut stability.At present, many institution of higher learning and scientific research institutions mainly adopt mechanics of materials multi-function test stand to carry out the strut stability test, this testing table often can only carry out the test of the hinged depression bar limit stress in two ends, can't carry out the test of multiple different rod end constraint strut stability, the stability test of especially elongated depression bar.
Three, summary of the invention:
The purpose of this utility model provides the anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing, and it carries out the strut stability test for the present mechanics of materials multi-function test stand of solution circumscribed problem.
The technical scheme that its technical matters that solves the utility model adopts is: this anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing comprise V-arrangement hinged-support, following V-arrangement hinged-support, last V-arrangement hinged-support is connected by the pull pressure sensor of ring flange with mechanics of materials multi-function test stand, following V-arrangement hinged-support is connected by the base of ring flange with mechanics of materials multi-function test stand, between last V-arrangement hinged-support and the following V-arrangement hinged-support depression bar is installed.
The anchor clamps that are used for mechanics of materials multi-function test stand compression bar stabilization testing in the such scheme also comprise the taper movable clip block, the taper movable clip block has four, wherein two taper movable clip blocks embed and go up V-arrangement hinged-support both sides and use bolt, bolt was also used in V-arrangement hinged-support both sides under two taper movable clip blocks embedded in addition, and is affixed by corresponding taper movable clip block and depression bar respectively between last V-arrangement hinged-support and the following V-arrangement hinged-support.
Mobile support saddle is installed on the depression bar in the such scheme, and mobile support saddle has two corresponding web joints, and hinge connects between two web joints, and wherein a web joint is connected by bolt with depression bar, and another web joint is connected by back up pad with described base.
Go up V-arrangement hinged-support or following V-arrangement hinged-support embedding taper movable clip block in the such scheme.
Beneficial effect:
(1) the utility model structural design is ingenious, and V-arrangement hinged-support and taper movable clip block are dismountable, can select as required to use, and is flexible and changeable, by changing different annexes, can realize multiple rod end constraint and the experiment of elongated strut stability.
(2) the utility model utilizes the existing equipment transformation to form, and is with low cost, simple in structure, be convenient to operation, has the important project practical significance for improving mechanics of materials multi-function test stand strut stability test.
Four, description of drawings:
Fig. 1 is the structural representation of first kind of embodiment of the utility model;
Fig. 2 is the work synoptic diagram of first kind of embodiment of the utility model;
Fig. 3 is the structural representation of second kind of embodiment of the utility model;
Fig. 4 is the structural representation of the third embodiment of the utility model;
Fig. 5 is the structural representation of the 4th kind of embodiment of the utility model.
5 times V-arrangement hinged-supports of V-arrangement hinged-support 4 resistance strain gages, 6 mobile support saddles, 7 worm screw elevating mechanisms, 8 pull pressure sensor, 9 handwheels on 1 taper movable clip block, 2 depression bars 3.
Five, embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
In conjunction with Fig. 1, shown in Figure 2, this anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing comprise V-arrangement hinged-support 3, following V-arrangement hinged-support 5, hinged depression bar 2 between last V-arrangement hinged-support 3 and the following V-arrangement hinged-support 5, last V-arrangement hinged-support 3 is connected with the pull pressure sensor 8 of mechanics of materials multi-function test stand by ring flange, and following V-arrangement hinged-support 5 cooperates with baseline positioning hole on the mechanics of materials multifunction test device base by ring flange.When testing, adhering resistance strain sheets 4 on the depression bar 2, utilize clock gauge to measure displacement, and load mode is to realize by handwheel 9 and worm screw elevating mechanism 7.
The present embodiment compression bar stabilization testing is as follows:
1. depression bar 2 is installed between the upper and lower V-arrangement hinged-support, and notes good center line;
2. with foil gauge R
1R
2Insert in the static resistance strainmeter by the half-bridge mode;
3. strainmeter is correctly arranged by employed foil gauge sensitivity coefficient and foil gauge resistance value;
4. axle pressure (10N) more a little on depression bar 2 is as initial axle pressure
5. in axle pressure be
The time with strainmeter zero setting (also can record initial reading strain);
According to before the experiment to the estimation of critical force, in axial force less than estimating critical force
Value 80% in, divide big grade power to load (generally dividing 6 grades), and record every grade reading strain, estimating critical force
Value 80% divides little grade power to load when above, (generally be about big grade power 1/5～1/4), records the reading value of bending strain
7. describe curve according to the bending strain value, and find out the asymptotic line of the curve C D section of retouching, determine critical force
Test value.
Fig. 3 is the structural representation of second kind of embodiment of the utility model, this anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing comprise V-arrangement hinged-support 3, following V-arrangement hinged-support 5, taper movable clip block 1, taper movable clip block 1 has four, wherein two taper movable clip blocks 1 embed and go up V-arrangement hinged-support 3 both sides and use bolt, bolt was also used in V-arrangement hinged-support 5 both sides under two taper movable clip blocks 1 embedded in addition, affixed with depression bar 2 by corresponding taper movable clip block 1 respectively between last V-arrangement hinged-support 3 and the following V-arrangement hinged-support 5, but 1 automatic centering of taper movable clip block, present embodiment can realize the two fixed ends compression bar stabilization testing.
The present embodiment compression bar stabilization testing is as follows:
1. depression bar 2 is installed between the upper and lower V-arrangement hinged-support, and taper movable clip block 1 is embedded in the upper and lower V-arrangement hinged-support, and use bolt;
2. with foil gauge R
1R
2Insert in the static resistance strainmeter by the half-bridge mode;
3. strainmeter is correctly arranged by employed foil gauge sensitivity coefficient and foil gauge resistance value;
4. axle pressure (10N) more a little on depression bar 2 is as initial axle pressure
5. in axle pressure be
The time with strainmeter zero setting (also can record initial reading strain);
According to before the experiment to the estimation of critical force, in axial force less than estimating critical force
Value 80% in, divide big grade power to load (generally dividing 6 grades), and record every grade reading strain, estimating critical force
Value 80% divides little grade power to load when above, (generally be about big grade power 1/5～1/4), records the reading value of bending strain
7. describe curve according to the bending strain value, and find out the asymptotic line of the curve C D section of retouching, determine critical force
Test value.
Fig. 4 is the structural representation of the third embodiment of the utility model, this anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing comprise V-arrangement hinged-support 3, following V-arrangement hinged-support 5, taper movable clip block 1, taper movable clip block 1 has four, wherein two taper movable clip blocks 1 embed and go up V-arrangement hinged-support 3 both sides and use bolt, bolt was also used in V-arrangement hinged-support 5 both sides under two taper movable clip blocks 1 embedded in addition, affixed by corresponding taper movable clip block and depression bar 2 respectively between last V-arrangement hinged-support 3 and the following V-arrangement hinged-support 5, and automatic centering is fixed; Mobile support saddle 6 is installed on the depression bar 2, and mobile support saddle 6 has two corresponding web joints, and hinge connects between two web joints, and wherein web joint and depression bar 2 are connected by bolt, and another web joint is connected by back up pad with described base.Present embodiment can realize the long two fixed ends compression bar stabilization testing of different bars.
The present embodiment compression bar stabilization testing is as follows:
1. depression bar 2 is installed between the upper and lower V-arrangement hinged-support, and taper movable clip block 1 is embedded in the upper and lower V-arrangement hinged-support, and use bolt;
2. according to the length of test depression bar 2, mobile support saddle 6 is fixed on depression bar 2 relevant positions, the other end and base support plate connect firmly;
3. with foil gauge R
1R
2Insert in the static resistance strainmeter by the half-bridge mode;
4. strainmeter is correctly arranged by employed foil gauge sensitivity coefficient and foil gauge resistance value;
5. axle pressure (10N) more a little on depression bar is as initial axle pressure
6. in axle pressure be
The time with strainmeter zero setting (also can record initial reading strain);
According to before the experiment to the estimation of critical force, in axial force less than estimating critical force
Value 80% in, divide big grade power to load (generally dividing 6 grades), and record every grade reading strain, estimating critical force
Value 80% divides little grade power to load when above, (generally be about big grade power 1/5～1/4), records the reading value of bending strain
8. describe curve according to the bending strain value, and find out the asymptotic line of the curve C D section of retouching, determine critical force
Test value.
Fig. 5 is the structural representation of the 4th kind of embodiment of the utility model, this anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing comprise V-arrangement hinged-support 3, following V-arrangement hinged-support 5, last V-arrangement hinged-support 3 both sides embed taper movable clip block 1, and pressing plate 2 upper ends are affixed, and the lower end is hinged.Present embodiment realizes the solid hinged compression bar stabilization testing of Zhi Yiduan of an end.
The present embodiment compression bar stabilization testing is as follows:
1. depression bar 2 is installed between the upper and lower V-arrangement hinged-support, and 1 embedding of taper movable clip block is gone up in the V-arrangement hinged-support, and use bolt;
2. with foil gauge R
1R
2Insert in the static resistance strainmeter by the half-bridge mode;
3. strainmeter is correctly arranged by employed foil gauge sensitivity coefficient and foil gauge resistance value;
4. axle pressure (10N) more a little on depression bar 2 is as initial axle pressure
5. in axle pressure be
The time with strainmeter zero setting (also can record initial reading strain);
According to before the experiment to the estimation of critical force, in axial force less than estimating critical force
Value 80% in, divide big grade power to load (generally dividing 6 grades), and record every grade reading strain, estimating critical force
Value 80% divides little grade power to load when above, (generally be about big grade power 1/5～1/4), records the reading value of bending strain
7. describe curve according to the bending strain value, and find out the asymptotic line of the curve C D section of retouching, determine critical force
Test value.
Claims (4)
1. anchor clamps that are used for mechanics of materials multi-function test stand compression bar stabilization testing, it is characterized in that: this anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing comprise V-arrangement hinged-support (3), following V-arrangement hinged-support (5), last V-arrangement hinged-support (3) is connected with the pull pressure sensor (8) of mechanics of materials multi-function test stand by ring flange, following V-arrangement hinged-support (5) is connected by the base of ring flange with mechanics of materials multi-function test stand, between last V-arrangement hinged-support (3) and the following V-arrangement hinged-support (5) depression bar (2) is installed.
2. anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing according to claim 1, it is characterized in that: described anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing also comprise taper movable clip block (1), taper movable clip block (1) has four, wherein bolt is also used in V-arrangement hinged-support (3) both sides in two taper movable clip blocks (1) embedding, bolt was also used in V-arrangement hinged-support (5) both sides under two taper movable clip blocks (1) embedded in addition, and is affixed by corresponding taper movable clip block and depression bar (2) respectively between last V-arrangement hinged-support (3) and the following V-arrangement hinged-support (5).
3. anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing according to claim 1 and 2, it is characterized in that: mobile support saddle (6) is installed on the described depression bar (2), mobile support saddle (6) has two corresponding web joints, hinge connects between two web joints, wherein a web joint is connected by bolt with depression bar (2), and another web joint is connected by back up pad with described base.
4. the anchor clamps for mechanics of materials multi-function test stand compression bar stabilization testing according to claim 1 is characterized in that: described V-arrangement hinged-support (3) or following V-arrangement hinged-support (5) the embedding taper movable clip block (1) gone up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320107798 CN203069452U (en) | 2013-03-09 | 2013-03-09 | Fixture for compression bar stability test of material mechanics multifunctional bedstand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320107798 CN203069452U (en) | 2013-03-09 | 2013-03-09 | Fixture for compression bar stability test of material mechanics multifunctional bedstand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069452U true CN203069452U (en) | 2013-07-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320107798 Expired - Fee Related CN203069452U (en) | 2013-03-09 | 2013-03-09 | Fixture for compression bar stability test of material mechanics multifunctional bedstand |
Country Status (1)
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|---|---|
| CN (1) | CN203069452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655671A (en) * | 2017-10-08 | 2018-02-02 | 南京理工大学 | A kind of multipurpose bearing for axis compression member experimental study |
-
2013
- 2013-03-09 CN CN 201320107798 patent/CN203069452U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655671A (en) * | 2017-10-08 | 2018-02-02 | 南京理工大学 | A kind of multipurpose bearing for axis compression member experimental study |
| CN107655671B (en) * | 2017-10-08 | 2023-10-31 | 南京理工大学 | Multipurpose support for axle center compression component test research |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20140309 |