CN218036055U

CN218036055U - Fatigue test fixture for asymmetric splines

Info

Publication number: CN218036055U
Application number: CN202222130599.3U
Authority: CN
Inventors: 许经纬; 尹衍军; 张书山; 陈云; 谢浩俊
Original assignee: Changzhou Wmc Detection Technology Co ltd
Current assignee: Changzhou Wmc Detection Technology Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-13
Anticipated expiration: 2032-08-12

Abstract

The utility model relates to a fatigue test technical field especially relates to a fatigue test anchor clamps of asymmetric spline, include: the locking device, the clamp assembly and the guide structure; the anchor clamps subassembly sets up two sets ofly at least, and every group includes: a clamping plate and an adjusting plate; the clamping plate is arranged corresponding to the adjusting plate; a guide structure is fixedly arranged on one side of the adjusting plate; each group of clamp assemblies is attached to the test sample strip and clamps the test sample strip; the locking device adjusts the distance between the clamping plate and the adjusting plate, and the test sample strip is extruded and fixed through the clamp assembly; the direction parallel arrangement that guide structure and test spline extend plays the guide effect to the anchor clamps subassembly. Through the utility model discloses, the test fixture problem of asymmetric test spline has been solved, and the installation is simple, and strong adaptability can also prevent during the test that test spline twists reverse, bucking, and the steadiness when improving the test guarantees the precision of test data.

Description

Fatigue test fixture for asymmetric splines

Technical Field

The utility model relates to a fatigue test technical field especially relates to a fatigue test anchor clamps of asymmetric spline.

Background

Before the composite material is put into use, the fatigue strength of the composite material needs to be tested, and the composite material can be put into use when meeting the requirements. At present, when the fatigue strength of a sample strip is tested, the composite material is generally made into the test sample strip which meets the test standard according to the international standard, and the required stress test is carried out on the test sample strip.

In the current tension and compression fatigue test, the situation that the test sample strip is locally asymmetric occurs due to various reasons, such as manufacturing production process, the local shape specificity of the test sample strip shape required for the test, and the like, and a tool clamp which can adapt to the asymmetric sample strip is needed.

The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fatigue test anchor clamps of asymmetric spline can effectively solve the problem in the background art.

In order to achieve the purpose, the utility model adopts the technical proposal that:

a fatigue testing fixture for asymmetric splines, comprising: the locking device, the clamp assembly and the guide structure;

the anchor clamps subassembly sets up two sets at least, and every group includes: a clamping plate and an adjusting plate;

the clamping plate is arranged corresponding to the adjusting plate;

the guide structure is fixedly arranged on one side of the adjusting plate;

each group of the clamp assemblies is attached to a test sample strip, and the test sample strip is clamped;

the locking device adjusts the distance between the clamping plate and the adjusting plate, and the test sample strip is extruded and fixed through the clamp assembly;

the guide structure is arranged in parallel with the extending direction of the test spline and plays a role in guiding the clamp assembly.

Further, the clamp assembly further comprises a side plate; the side plates are arranged between the clamping plates and the adjusting plates and limit the two sides of the test spline.

Further, the guide structure includes: a guide block and a guide post;

the guide block is provided with a guide hole and is fixedly connected with the adjusting plate;

the guide post runs through the guiding hole, and both ends are fixed on external equipment, and are right the anchor clamps subassembly plays the guide effect.

Furthermore, both sides of the adjusting plate are provided with guide structures, and the guide structures on both sides are the same.

Furthermore, the locking device is a bolt and a nut, the adjusting plate, the clamping plate and the side plate are provided with locking holes, the bolt penetrates through the locking holes and is connected with the nut in a matched mode, and the distance between the clamping plate and the adjusting plate is adjusted.

Furthermore, one side of the clamping plate attaching clamp is provided with a locking tooth block.

Further, the locking tooth block is of an elastic structure.

Through the technical scheme of the utility model, can realize following technological effect:

the test fixture problem of asymmetric test spline has effectively been solved, and the installation is simple, and strong adaptability can also prevent during the test that test spline twists reverse, bucking, and the steadiness when improving the test guarantees the precision of test data.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a fatigue test fixture for asymmetric splines;

FIG. 2 is a schematic structural diagram of a fatigue test fixture for asymmetric splines at another angle;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

FIG. 4 is a schematic view of the installation of the clamp assembly and guide structure;

FIG. 5 is a schematic structural view of a locking tooth block;

reference numerals: 1. testing a sample strip; 2. a splint; 21. a locking hole; 22. locking the tooth block; 3. a guide post; 41. a guide block; 42. an adjusting plate; 43. side plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1~5, an asymmetric spline fatigue test fixture comprising: the locking device, the clamp assembly and the guide structure; the anchor clamps subassembly sets up two sets ofly at least, and every group includes: the clamping plate 2 and the adjusting plate 42; the clamping plate 2 is arranged corresponding to the adjusting plate 42; a guide structure is fixedly arranged on one side of the adjusting plate 42; each group of clamp assemblies is attached to the test sample strip 1, and the test sample strip 1 is clamped; the locking device adjusts the distance between the clamping plate 2 and the adjusting plate 42, and the test sample strip 1 is extruded and fixed through the clamp assembly; the guide structure is arranged in parallel with the extending direction of the test spline 1, and plays a role in guiding the clamp assembly.

Through the technical scheme of the utility model, effectively solved asymmetric test spline 1's test fixture problem, and the installation is simple, and strong adaptability can also prevent during the test that test spline 1 twists reverse, bucking, and the steadiness when improving the test guarantees the precision of test data.

In the installation, dismantle locking device earlier, make splint 2 and regulating plate 42 separate, install test spline 1 again, make test spline 1 laminate with splint 2 and regulating plate 42 respectively, cause the extrusion to splint 2 and regulating plate 42 through locking device, thereby make test spline 1 and anchor clamps subassembly rigidity, wherein, the anchor clamps subassembly includes two sets ofly at least, every group does not do not fix the position that centre gripping test spline 1 is different, there may be asymmetric relation between this position, include the fixed different position control of two sets of anchor clamps subassemblies through the multiunit, make asymmetric position relatively independent, if asymmetric position exists the multiunit or exists the fluctuation, then can solve through setting up the multiunit, if there is the asymmetry at same anchor clamps subassembly clamping position portion, should reselect the position of fixed centre gripping, keep the symmetry of each position. Because perhaps need millions of reciprocal drawing of straight line to press at the test procedure, wherein, the condition that can hardly have torsion, bucking appears, and the setting of guide structure can make anchor clamps subassembly and test spline 1 test along the direction of direction, guarantees the test data precision.

To limit the lateral position of the test spline 1, the jig assembly further includes side plates 43, as shown in fig. 4; the side plates 43 are provided between the clamping plate 2 and the adjusting plate 42, and limit both sides of the test sample strip 1. The setting of curb plate 43 has restricted the position of test spline 1 for the anchor clamps subassembly better, avoids the skew condition that appears because of the time overlength in the test, improves the steadiness of anchor clamps, and the thickness of curb plate 43 is difficult too thick in addition, and the terminal surface of curb plate 43 also needn't laminate between splint 2, the regulating plate 42 in the installation, as long as guarantee the side with test spline 1's laminating can, can adapt to the thickness of the test spline 1 of more thickness like this.

In the above embodiment, the guide structure includes: the guide block 41 and the guide post 3; the guide block 41 is provided with a guide hole and is fixedly connected with the adjusting plate 42; the guide post 3 runs through the guiding hole, and both ends are fixed on external equipment, and play the guide effect to the anchor clamps subassembly. Referring to 1~4, the direction of the guide post 3 is the same as that of the test spline 1, that is, the tension and compression test is the extending direction of the test spline 1, as the clamp and the test spline 1 are buckled and twisted with the increase of time in the ordinary test, some materials cannot resist the force of the part through the toughness of the materials, and even if the materials are not damaged, the test data can be seriously influenced, and the problem can be greatly solved by the arrangement of the guide structure.

For the same purpose, on the basis of the above-described embodiment, the adjusting plate 42 is provided with guide structures on both sides, and the guide structures on both sides are the same. The guide structures are arranged on the two sides of the adjusting plate 42, so that the guide effect can be enhanced, and the same structure can make the production, installation and part replacement more simple and convenient.

As a preferred embodiment of the above embodiment, the locking device is a bolt and a nut, the adjusting plate 42, the clamping plate 2 and the side plate 43 are all provided with a locking hole 21, the bolt penetrates through the locking hole 21 and is connected with the nut in a matching manner, and the distance between the clamping plate 2 and the adjusting plate 42 is adjusted. In the embodiment, a bolt and a nut are selected as the locking device, and the distance between the clamping plate 2 and the adjusting plate 42 is gradually reduced through the matching connection between the bolt and the nut, so that the test sample strip 1 is extruded and fixed.

In order to fix the test sample strip 1 better, one side of the clamping plate 2, which is attached to the clamp, is provided with a locking tooth block 22. As shown in fig. 5, the plurality of locking tooth blocks 22 may increase the friction between the test spline 1 and the jig assembly, making it too good for a secure locking of the test spline 1.

As a preference of the above embodiment, the locking tooth block 22 is of an elastic structure. Furthermore, the locking tooth block 22 with the elastic structure can enable the test sample strip 1 with a slightly uneven surface to be better attached to the locking tooth block 22, meanwhile, the tooth block approaches to a straight line through extrusion, friction force is better enhanced, and more test sample strips 1 are compatible.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A fatigue test fixture for asymmetric splines, comprising: the locking device, the clamp assembly and the guide structure;

the clamping plate is arranged corresponding to the adjusting plate;

the guide structure is fixedly arranged on one side of the adjusting plate;

2. The asymmetric spline fatigue test fixture of claim 1, wherein the fixture assembly further comprises a side plate; the side plates are arranged between the clamping plates and the adjusting plates and limit the two sides of the test sample strip.

3. The asymmetric spline fatigue test fixture of claim 2, wherein the guide structure comprises: a guide block and a guide post;

4. The asymmetric spline fatigue testing jig of claim 3, wherein the adjusting plate is provided with guide structures on both sides, the guide structures on both sides being identical.

5. The asymmetric spline fatigue testing fixture as claimed in claim 2, wherein the locking means are a bolt and a nut, the adjustment plate, clamping plate and side plate are provided with locking holes, the bolt passes through the locking holes and is adapted to the nut, and the distance between the clamping plate and the adjustment plate is adjusted.

6. The asymmetric spline fatigue test fixture of claim 1~5, wherein the clamp plate engaging fixture has a locking tooth block on one side.

7. The asymmetric spline fatigue test fixture of claim 6, wherein the locking tooth block is a resilient structure.