CN210893926U - Tensile loading device for testing compression strength of composite laminated plate after impact - Google Patents
Tensile loading device for testing compression strength of composite laminated plate after impact Download PDFInfo
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- CN210893926U CN210893926U CN201921206234.6U CN201921206234U CN210893926U CN 210893926 U CN210893926 U CN 210893926U CN 201921206234 U CN201921206234 U CN 201921206234U CN 210893926 U CN210893926 U CN 210893926U
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Abstract
The utility model belongs to the technical field of strength test design, in particular to a tensile loading device for testing the compression strength of a composite material laminated plate after impact; the structure comprises a first loading flat plate, a second loading flat plate, a third loading flat plate, a fourth loading flat plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first adjusting bolt and a second adjusting bolt; the second loading flat plate and the third loading flat plate are used for clamping and fixing a test piece; one end of the first connecting rod and one end of the third connecting rod are fixed on the fourth loading flat plate, the other ends of the first connecting rod and the third connecting rod penetrate through the third loading flat plate and then are connected to the second loading flat plate, one end of the second connecting rod and one end of the fourth connecting rod are fixed on the first loading flat plate, the other ends of the second connecting rod and the fourth connecting rod penetrate through the second loading flat plate and then are connected to the third loading flat plate, the first adjusting bolt is arranged on the first loading flat plate, and the second adjusting bolt is arranged on the fourth loading.
Description
Technical Field
The utility model relates to a test combined material plywood strikes back compressive strength's drawing to loading device.
Background
When the compression strength of the composite material laminated plate after impact is tested, the testing machine uses a compression mode, and the compression mode has higher requirement on the centering performance of a chuck of the testing machine. When a large compression load is applied to a sample, the chuck with the extension rod is eccentric, so that the chuck of the testing machine is easily damaged, and the accuracy of test data is greatly influenced.
The utility model discloses mainly be applied to experimental test process, design a switching-over anchor clamps, change the loading mode of testing machine into tensile by the compression. The clamp used at present adopts a compression mode, and has higher requirement on the centering performance of a testing machine. The utility model provides an above-mentioned problem, have the commonality, will test the loading mode of assaulting back compressive strength testing machine and convert the compression into tensile to avoided influencing testing machine and test result because of having extension bar chuck off-centre.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the influence on test data caused by the eccentricity of the chuck is eliminated when the testing machine with the extension rod chuck applies a compression load, so that the accuracy of the test data is improved, the chuck of the testing machine is effectively protected, and the safety of the testing process is improved.
The technical scheme is as follows: a tensile loading device for testing the compression strength of a composite laminated plate after impact; the device comprises a first loading flat plate, a second loading flat plate, a third loading flat plate, a fourth loading flat plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first adjusting bolt and a second adjusting bolt; the second loading flat plate and the third loading flat plate are used for clamping and fixing a test piece; one end of the first connecting rod and one end of the third connecting rod are fixed on the fourth loading flat plate, the other ends of the first connecting rod and the third connecting rod penetrate through the third loading flat plate and then are connected to the second loading flat plate, one end of the second connecting rod and one end of the fourth connecting rod are fixed on the first loading flat plate, the other ends of the second connecting rod and the fourth connecting rod penetrate through the second loading flat plate and then are connected to the third loading flat plate, the first adjusting bolt is arranged on the first loading flat plate, and the second adjusting bolt is arranged on the fourth loading.
When a tensile load is loaded, the first adjusting bolt and the second adjusting bolt are pulled in opposite directions to drive the second loading flat plate and the third loading flat plate to move in opposite directions, so that the compression loading of the sample is realized.
Lubricating grease is smeared in gaps among the through holes of the first connecting rod, the third connecting rod and the third loading flat plate so as to reduce the friction force between the connecting rods and the loading flat plate. Similar designs are adopted between the second connecting rod and the fourth connecting rod and the through hole of the second loading plate.
One end of the first connecting rod and one end of the third connecting rod are fixed with the fourth loading flat plate through bolts, so that the first connecting rod and the third connecting rod are convenient to disassemble.
The other ends of the first connecting rod and the third connecting rod are welded on the second loading flat plate.
The first adjusting bolt and the second adjusting bolt are connected through double lugs and single lugs, and a pin shaft is arranged in the middle of the first adjusting bolt and the second adjusting bolt, so that fine adjustment can be performed along the pin shaft, and the centering performance is kept.
The beneficial technical effects are as follows: the utility model discloses can realize testing composite material laminated plate and strike back compressive strength testing machine and convert and apply tensile load by applying compressive load. The test fixture has universality and repeatability. The influence on test data caused by the eccentricity of the chuck is eliminated when the testing machine with the extension rod chuck applies a compression load, so that the accuracy of the test data is improved, the chuck of the testing machine is effectively protected, and the safety of the testing process is improved.
Drawings
FIG. 1 is a drawing direction loading device for testing the compressive strength of a composite laminate after impact;
description of numbering: a-a first loading flat plate, B-a second loading flat plate, C-a third loading flat plate, D-a fourth loading flat plate, 1-a first connecting rod, 2-a second connecting rod, 3-a third connecting rod, 4-a fourth connecting rod, G-a first adjusting bolt and H-a second adjusting bolt.
Detailed Description
Referring to fig. 1, a tensile loading apparatus for testing the compressive strength of a composite laminate after impact; the device comprises a first loading flat plate, a second loading flat plate, a third loading flat plate, a fourth loading flat plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first adjusting bolt and a second adjusting bolt; the second loading flat plate and the third loading flat plate are used for clamping and fixing a test piece; one end of the first connecting rod and one end of the third connecting rod are fixed on the fourth loading flat plate, the other ends of the first connecting rod and the third connecting rod penetrate through the third loading flat plate and then are connected to the second loading flat plate, one end of the second connecting rod and one end of the fourth connecting rod are fixed on the first loading flat plate, the other ends of the second connecting rod and the fourth connecting rod penetrate through the second loading flat plate and then are connected to the third loading flat plate, the first adjusting bolt is arranged on the first loading flat plate, and the second adjusting bolt is arranged on the fourth loading.
When a tensile load is loaded, the first adjusting bolt and the second adjusting bolt are pulled in opposite directions to drive the second loading flat plate and the third loading flat plate to move in opposite directions, so that the compression loading of the sample is realized.
Lubricating grease is smeared in gaps among the through holes of the first connecting rod, the third connecting rod and the third loading flat plate so as to reduce the friction force between the connecting rods and the loading flat plate. Similar designs are adopted between the second connecting rod and the fourth connecting rod and the through hole of the second loading plate.
One end of the first connecting rod and one end of the third connecting rod are fixed with the fourth loading flat plate through bolts, so that the first connecting rod and the third connecting rod are convenient to disassemble. The other ends of the first connecting rod and the third connecting rod are welded on the second loading flat plate.
The first adjusting bolt and the second adjusting bolt are connected through double lugs and single lugs, and a pin shaft is arranged in the middle of the first adjusting bolt and the second adjusting bolt, so that fine adjustment can be performed along the pin shaft, and the centering performance is kept.
Adopt above-mentioned the utility model provides a structure can realize testing composite material laminated plate and strike back compression strength testing machine and convert and apply tensile load by applying compressive load. The test fixture has universality and repeatability. The accuracy of test data is improved, the chuck of the testing machine is effectively protected, and the safety of the testing process is improved.
Claims (6)
1. A tensile loading device for testing the compression strength of a composite laminated plate after impact; the method is characterized in that: the device comprises a first loading flat plate, a second loading flat plate, a third loading flat plate, a fourth loading flat plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first adjusting bolt and a second adjusting bolt; the second loading flat plate and the third loading flat plate are used for clamping and fixing a test piece; one end of the first connecting rod and one end of the third connecting rod are fixed on the fourth loading flat plate, the other ends of the first connecting rod and the third connecting rod penetrate through the third loading flat plate and then are connected to the second loading flat plate, one end of the second connecting rod and one end of the fourth connecting rod are fixed on the first loading flat plate, the other ends of the second connecting rod and the fourth connecting rod penetrate through the second loading flat plate and then are connected to the third loading flat plate, the first adjusting bolt is arranged on the first loading flat plate, and the second adjusting bolt is arranged on the fourth loading.
2. The pull loading device for testing the compression strength of the composite material laminated plate after impact according to claim 1; the method is characterized in that: lubricating grease is smeared in gaps among the through holes of the first connecting rod, the third connecting rod and the third loading flat plate.
3. The pull loading device for testing the compression strength of the composite material laminated plate after impact according to claim 1; the method is characterized in that: lubricating grease is smeared in gaps among the through holes of the second connecting rod, the fourth connecting rod and the second loading plate.
4. The pull loading device for testing the compression strength of the composite material laminated plate after impact according to claim 1; the method is characterized in that: one end of the first connecting rod and one end of the third connecting rod are fixed with the fourth loading flat plate through bolts.
5. The tensile loading device of claim 4 testing the compressive strength of the composite laminate after impact; the method is characterized in that: the other ends of the first connecting rod and the third connecting rod are welded on the second loading flat plate.
6. The pull loading device for testing the compression strength of the composite material laminated plate after impact according to claim 1; the method is characterized in that: the first adjusting bolt and the second adjusting bolt are connected through double lugs and single lugs, and a pin shaft is arranged in the middle of the first adjusting bolt and the second adjusting bolt, so that fine adjustment can be performed along the pin shaft, and the centering performance is kept.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921206234.6U CN210893926U (en) | 2019-07-26 | 2019-07-26 | Tensile loading device for testing compression strength of composite laminated plate after impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921206234.6U CN210893926U (en) | 2019-07-26 | 2019-07-26 | Tensile loading device for testing compression strength of composite laminated plate after impact |
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| CN210893926U true CN210893926U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921206234.6U Active CN210893926U (en) | 2019-07-26 | 2019-07-26 | Tensile loading device for testing compression strength of composite laminated plate after impact |
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| CN (1) | CN210893926U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965049A (en) * | 2020-07-24 | 2020-11-20 | 中国航空工业集团公司济南特种结构研究所 | Device and method for testing shearing performance of honeycomb structure in tensile loading mode |
| CN111982483A (en) * | 2020-08-19 | 2020-11-24 | 中国航空工业集团公司沈阳飞机设计研究所 | Axial compression loading reversing device with initial curvature eccentric test piece |
-
2019
- 2019-07-26 CN CN201921206234.6U patent/CN210893926U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965049A (en) * | 2020-07-24 | 2020-11-20 | 中国航空工业集团公司济南特种结构研究所 | Device and method for testing shearing performance of honeycomb structure in tensile loading mode |
| CN111982483A (en) * | 2020-08-19 | 2020-11-24 | 中国航空工业集团公司沈阳飞机设计研究所 | Axial compression loading reversing device with initial curvature eccentric test piece |
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