CN212459161U - Disassembly-free clamp for dynamic, static and quasi-static tests - Google Patents
Disassembly-free clamp for dynamic, static and quasi-static tests Download PDFInfo
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- CN212459161U CN212459161U CN202021184902.2U CN202021184902U CN212459161U CN 212459161 U CN212459161 U CN 212459161U CN 202021184902 U CN202021184902 U CN 202021184902U CN 212459161 U CN212459161 U CN 212459161U
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Abstract
The utility model relates to a exempt from to dismantle anchor clamps for developments, static state and quasi-static test, including the same first anchor clamps body and the second anchor clamps body, the first anchor clamps body all includes mount pad and connector with the second anchor clamps body, the connector is cylindrically, and the one end demountable installation of connector in mount pad, the other end is provided with connecting screw hole. The connector of this anchor clamps passes through connecting threaded hole and links to each other with the metal specimen, can prevent to appear the phenomenon of sliding between anchor clamps and the metal test, realizes stabilizing the loading, improves the accuracy of test. When the test mode is replaced, only the connectors of the first clamp body and the second clamp body need to be detached, the mounting seat is reserved, then the new connectors are installed, the operation flow of installing and detaching the clamp is simplified, the operation efficiency is improved, and the use is convenient.
Description
Technical Field
The utility model belongs to the technical field of metal material test equipment and specifically relates to a exempt from to dismantle anchor clamps for developments, static and quasi-static test.
Background
In the metal material test, most of metal material testing machine equipment adopts a hydraulic horizontal pushing clamping block or a wedge-shaped clamping block to apply clamping force, and clamps a pull rod or other working connecting rods under the action of hydraulic pressure or directly clamps a test sample, so that the clamping test of the test sample is achieved. A hydraulic ejector rod is also used, the rigid connection of the loading chain is kept under the hydraulic action, and the clamping requirement of the test is met.
The existing clamping mode has the objective problems that:
the mode that the clamp blocks are horizontally pushed or the wedge-shaped clamp blocks exert clamping force through hydraulic pressure is adopted, and in the long-time use process, the phenomenon that the clamp and the pull rod slip occasionally occurs when the test is in a loading link, so that the test data are fluctuated. Some testing machines can adjust the clamping force of the hydraulic clamp, but the testing machines are easy to slide when meeting large load. The frequency of the slippage phenomenon is positively correlated with the frequency of the clamp application, and the load applied in the test is positively correlated.
The wedge-shaped clamping blocks are used for applying clamping force through hydraulic pressure, when a test sample is directly clamped, uncertain negative force is applied to the test sample, the test is unfavorable, and especially the influence on the test sample with a small size is larger.
The hydraulic clamp of the large-tonnage dynamic testing machine is large in size and weight, the small-sized lifting appliance is needed to carry out mounting and dismounting work, a large amount of operation time is needed for mounting and dismounting, and the working efficiency is influenced.
The clamping mode of the hydraulic ejector rod has complex clamp design and high cost, and needs a hydraulic source for supporting.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a dismantle-free anchor clamps is provided for developments, static and quasi-static test eliminates the phenomenon of sliding that hydraulically operated fixture probably produced, realizes stabilizing the loading, and it is convenient to install, convenient to use.
The utility model provides a technical scheme that its technical problem adopted is: a exempt from to dismantle anchor clamps for developments, static and quasi-static test, including the same first anchor clamps body and the second anchor clamps body, the first anchor clamps body all includes mount pad and connector with the second anchor clamps body, the connector is cylindrically, and the one end demountable installation of connector in mount pad, the other end is provided with connecting thread hole.
Furthermore, the connector is connected with a cylindrical positioning column, one end of the mounting seat is provided with a positioning hole, the positioning column is located in the positioning hole and in clearance fit with the positioning hole, and the positioning column is connected with the mounting seat through a positioning pin shaft which radially penetrates through the positioning column.
Furthermore, a radial inner pin hole is formed in the positioning column, two outer pin holes distributed in a cross shape are formed in the mounting seat, and the positioning pin shaft penetrates through the inner pin hole and the outer pin hole.
Further, one end of the mounting seat, which is far away from the connector, is provided with a threaded mounting hole.
Further, the mounting seat is cylindrical.
The utility model has the advantages that: the first clamp body and the second clamp body are matched for use, specifically, the first clamp body and the second clamp body are fixedly mounted on the testing equipment through the mounting bases, the connector of the first clamp body is connected with one end of a tested metal sample, the connector of the second clamp body is connected with the other end of the tested metal sample, the first clamp body and the connector of the second clamp body are ensured to be coaxial, and then the metal sample can be subjected to tensile force to be tested. When the test mode is replaced, only the connectors of the first clamp body and the second clamp body need to be detached, the mounting seat is reserved, then the new connectors are installed, the operation flow of installing and detaching the clamp is simplified, the operation efficiency is improved, and the use is convenient. In addition, the connector links to each other with metal specimen through connecting threaded hole, can prevent to appear the phenomenon of sliding between anchor clamps and the metal test, realizes stabilizing the loading, improves the accuracy of test.
Drawings
Fig. 1 is a front view schematically illustrating a first clamp body and a second clamp body according to the present invention;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of the clamp of the present invention in use;
reference numerals: 1-a first clamp body; 2-a second gripper body; 11-mounting seat; 12-a connector; 13-connecting threaded holes; 14-a positioning column; 15-positioning the pin shaft; 16-outer pin holes; 17-threaded mounting hole.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and fig. 2, the disassembly-free clamp for dynamic, static and quasi-static tests of the present invention comprises the same first clamp body 1 and second clamp body 2, wherein the first clamp body 1 and the second clamp body 2 are used in cooperation, so that the two ends of the metal sample can be clamped and fixed. The first clamp body 1 and the second clamp body 2 both comprise a mounting seat 11 and a connector 12, the mounting seat 11 is used for fixedly mounting the first clamp body 1 and the second clamp body 2 on a test device, the section of the first clamp body and the section of the second clamp body can be a prism with a square shape, connecting pieces such as a screw can be mounted, the first clamp body and the second clamp body are preferably cylindrical, a threaded mounting hole 17 is formed in one end, far away from the connector 12, of the mounting seat 11, so that coaxiality of the threaded mounting hole 17 and the connector 12 can be controlled, and the threaded mounting hole 17 is used for being connected with a test device and loading certain pre-tightening force. Connector 12 is used for linking to each other with metal specimen, and connector 12 is cylindrically, and connector 12's one end demountable installation in mount pad 11, when changing not unidimensional metal specimen, perhaps when changing test mode, can pull down connector 12 and install new connector 12, need not pull down whole the dismantling of anchor clamps, can save the work load of dismouting, improves efficiency of software testing. The other end of connector 12 is provided with connecting screw hole 13, and connecting screw hole 13 is used for with the metal sample threaded connection who is surveyed to fix metal sample, threaded connection's mode is more stable, can effectively prevent to exert the in-process metal sample of testing force and slide for connector 12 to metal sample, guarantees metal sample's stability, improves the accuracy that detects.
The connection head 12 may be directly screw-fitted to the mounting seat 11, or connected to the mounting seat 11 by screws or the like, as a preferred embodiment: connector 12 is connected with a columniform reference column 14, reference column 14 and connector 12 integrated into one piece, and the external diameter of reference column 14 is greater than the external diameter of connector 12, the one end of mount pad 11 is provided with the circular shape locating hole, reference column 14 is located the locating hole and with locating hole clearance fit, just reference column 14 links to each other with mount pad 11 through the locating pin axle 15 that radially runs through reference column 14. When the positioning pin shaft 15 is not installed, the positioning column 14 can rotate or axially slide in the positioning hole, and after the positioning pin shaft 15 is installed, the positioning column 14 can be kept stable in the positioning hole.
The positioning column 14 is provided with a radial inner pin hole, the mounting seat 11 is provided with two outer pin holes 16 distributed in a cross shape, and the positioning pin 15 penetrates through the inner pin hole and the outer pin hole 16. During the test, the power of test passes through equipment and transmits to mount pad 11, again by mount pad 11 transmission to location round pin axle 15, again by location round pin axle 15 transmission to reference column 14 and connector 12, finally transmit to the metal sample by connector 12, form the loading chain of test power, in order to guarantee the axiality of the loading chain of first anchor clamps body 1 and second anchor clamps body 2, two upper and lower mount pad 11 will possess two degrees of freedom that are each other perpendicular to the effort of location round pin axle 15, consequently, the location round pin axle 15 mutually perpendicular of first anchor clamps body 1 and second anchor clamps body 2, and location round pin axle 15 and outer pinhole 16 and interior pinhole sliding fit, in order to adjust horizontal position.
During testing, the first clamp body 1 and the second clamp body 2 are installed at a specific position of testing equipment, the first clamp body 1 is located above the second clamp body 2, the first clamp body 1 and the second clamp body 2 are coaxially arranged, needed pre-tightening force is applied between the mounting seat 11 and the equipment in a force control mode of the equipment, the connection between the mounting seat 11 and the equipment is locked, then the connector 12 can be installed through the positioning pin shaft 15, and as shown in fig. 3, a metal sample is installed and tested.
When different metal samples or test modes need to be replaced, the connector 12 can be detached, and a new connector 12 is replaced. Among the prior art, if change the original hydraulically operated fixture of equipment, whole process needs a working day at least, uses this anchor clamps after, and installation time shortens to 2 hours and can accomplish to because this anchor clamps satisfy the needs of specific test, thereby need not frequently install and dismantle anchor clamps, the operating mode conversion between the different experiments accelerates greatly, and efficiency obtains greatly improving. The clamp meets the requirement of specific test, avoids the requirement of a hydraulic ejector rod clamp with complex design and high manufacturing cost, and saves the test cost.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A exempt from to dismantle anchor clamps for developments, static and quasi-static test, its characterized in that: including the same first anchor clamps body (1) and the second anchor clamps body (2), the first anchor clamps body (1) and the second anchor clamps body (2) all include mount pad (11) and connector (12), connector (12) are cylindrically, and the one end demountable installation of connector (12) in mount pad (11), and the other end is provided with connecting thread hole (13).
2. The disassembly-free clamp for dynamic, static, and quasi-static testing of claim 1, wherein: connector (12) are connected with a columniform reference column (14), the one end of mount pad (11) is provided with the locating hole, reference column (14) are located the locating hole and with locating hole clearance fit, just reference column (14) link to each other with mount pad (11) through locating pin axle (15) that radially runs through reference column (14).
3. The disassembly-free clamp for dynamic, static, and quasi-static testing of claim 2, wherein: the positioning column (14) is provided with a radial inner pin hole, the mounting seat (11) is provided with two outer pin holes (16) distributed in a cross shape, and the positioning pin shaft (15) penetrates through the inner pin hole and the outer pin hole (16).
4. The disassembly-free clamp for dynamic, static, and quasi-static testing of claim 1, wherein: and a threaded mounting hole (17) is formed in one end, far away from the connector (12), of the mounting seat (11).
5. The disassembly-free clamp for dynamic, static, and quasi-static testing of claim 1, wherein: the mounting seat (11) is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021184902.2U CN212459161U (en) | 2020-06-23 | 2020-06-23 | Disassembly-free clamp for dynamic, static and quasi-static tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021184902.2U CN212459161U (en) | 2020-06-23 | 2020-06-23 | Disassembly-free clamp for dynamic, static and quasi-static tests |
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| Publication Number | Publication Date |
|---|---|
| CN212459161U true CN212459161U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021184902.2U Active CN212459161U (en) | 2020-06-23 | 2020-06-23 | Disassembly-free clamp for dynamic, static and quasi-static tests |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116429573A (en) * | 2023-04-17 | 2023-07-14 | 北京工业大学 | Welding type IGBT module bonding wire tensile testing device and method |
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2020
- 2020-06-23 CN CN202021184902.2U patent/CN212459161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116429573A (en) * | 2023-04-17 | 2023-07-14 | 北京工业大学 | Welding type IGBT module bonding wire tensile testing device and method |
| CN116429573B (en) * | 2023-04-17 | 2023-12-08 | 北京工业大学 | Welding type IGBT module bonding wire tensile testing device and method |
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