Gluing-free multifunctional tensile strength test clamp
The adhesive-free, multi-functional tensile strength testing fixture solves the problem of unstable adhesive bonding in out-of-plane tensile strength testing of composite materials, enabling efficient and accurate testing, suitable for various environments, and reducing costs.
Patent Information
- Application Number
- CN202422937173.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In existing out-of-plane tensile strength tests of composite materials, the adhesive bonding is unstable, leading to cracking, which affects the accuracy and efficiency of the measurement. Moreover, the adhesive bonding process is complex and costly, making it difficult to use in various environments.
This multi-functional tensile strength test fixture, which requires no adhesive, achieves a stable connection of the test specimen through a combination of connecting rods, connecting grooves, pins, and clamping round bars. It is suitable for various test types and can be used in high-temperature and low-temperature environments.
It improves the accuracy and efficiency of testing, reduces costs, and the fixtures are reusable, adaptable to various environments, and increase the degree of freedom in testing.
Smart Images
Figure CN223711224U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to test tool technical field, concretely relates to a multifunctional tensile strength test fixture of exempting from gluing. BACKGROUND
[0002] The out-of-plane tensile strength of composite material is one of important indexes for measuring material performance, but currently the adhesive way is often used for connection in the out-of-plane tensile strength test of composite material. In the experimental process, the test piece is prone to cracking at the adhesive part due to the low or unstable adhesive strength, and the purpose of measuring the out-of-plane tensile strength of the test piece cannot be achieved. If the test is carried out under high temperature, low temperature and hygroscopic environment, the adhesive layer's resistance and the adhesive curing condition also need to be considered. The adhesive process increases the experimental steps and cost, reduces the experimental efficiency and accuracy, and the adhesive connecting rod cannot be reused, so a multifunctional out-of-plane tensile strength test fixture of composite material exempting from gluing is needed. SUMMARY
[0003] The utility model discloses in order to solve the traditional composite material tensile test adhesive performance unstable, the adhesive process is complex, time -consuming, poor adaptability and other problems, and then provide a multifunctional tensile strength test fixture exempting from gluing.
[0004] The technical scheme adopted by the utility model is:
[0005] A multifunctional tensile strength test fixture exempting from gluing, comprising two connecting assemblies, each connecting assembly comprises a connecting rod, a connecting groove, a pin and a clamping round bar, the connecting groove is connected with a testing machine through the clamping round bar, the connecting groove is detachably connected with one end of the connecting rod through the pin, the other end of the connecting rod is connected with a test piece through a clamping assembly, or the other end of the connecting rod is threadedly connected with a round bar-shaped threaded test piece.
[0006] Compared with the prior art, the utility model has the following beneficial effects:
[0007] 1. The utility model adopts the form of clamping or threaded connection to fix the test piece, which is more stable than the adhesive test piece, saves the experimental time, and improves the experimental efficiency and accuracy.
[0008] 2. The utility model can modify the clamping block assembly according to different test piece types, and is suitable for various similar tensile tests.
[0009] 3. The utility model is made of metal material and can complete the test under various environments such as high temperature and low temperature.
[0010] 4. The utility model is connected through bolts and pins, and can be easily assembled and disassembled.
[0011] 5. The utility model discloses avoided the connection mode of sticking, clamp can be reused, has saved the experimental cost.
[0012] 6. The utility model discloses freely rotate at the connecting groove and the clamping round bar, increased the freedom of system, facilitate the test multi -angle observation. ACCURACY OF DRAWINGS
[0013] Figure 1 It is the main sectional view when the utility model does the tensile test of test piece.
[0014] Figure 2 It is the main view when the utility model does the tensile test of test piece.
[0015] Figure 3 It is the installation schematic drawing of the clamping subassembly of the utility model.
[0016] Figure 4 It is the main view of the clamp block of the utility model.
[0017] Figure 5 It is the side view of the clamp block of the utility model.
[0018] Figure 6 It is the overhead view of the connecting groove and the clamping round bar of the utility model.
[0019] Figure 7 It is the main view when the utility model does the round bar shape screw test piece.
[0020] Wherein: 1, clamp block;2, connecting rod;3, test piece;4, bolt;5, connecting groove;6, pin;7, clamping round bar;8, stud;9, round bar shape screw test piece;101, recess;102, thread hole three;103, semicircular hole;104, thread hole two;501, through -hole two. DETAILED DESCRIPTION
[0021] In order to better understand the purpose, structure and function of the utility model, the utility model is described in further detail below in conjunction with the drawings.
[0022] As Figure 1 , Figure 2 , Figure 7 Indicated, the utility model provides a kind of multifunctional tensile strength test fixture of exempting from sticking, including two connecting components;Each described connecting component includes connecting rod 2, connecting groove 5, pin 6 and clamping round bar 7;The connecting groove 5 is connected with testing machine by clamping round bar 7, and connecting groove 5 is detachably connected with one end of connecting rod 2 by pin 6, and the other end of connecting rod 2 is connected with test piece 3 by clamping component, or the other end of connecting rod 2 is threadedly connected with round bar shape screw test piece 9.
[0023] As Figures 1-3As shown, for the tensile test of the test piece 3, a through hole is arranged at one end of the connecting rod 2 for mounting the pin 6, and a circular table is arranged at the other end of the connecting rod 2 for connecting the clamping assembly and the connecting groove 5.
[0024] As shown in the drawings, Figure 7 As shown, for the tensile test of the round bar-shaped threaded test piece 9, a through hole is arranged at one end of the connecting rod 2 for mounting the pin 6, and a threaded hole is arranged at the other end of the connecting rod 2 for connecting the round bar-shaped threaded test piece 9.
[0025] As shown in the drawings, Figure 1 , Figure 2 , Figure 6 As shown, through holes 501 are arranged on the two side plates of the connecting groove 5 for cooperation and connection with the pin 6, and the connection of the connecting groove 5 and the connecting rod 2 is realized through the pin 6. A circular hole is arranged on the bottom plate of the connecting groove 5 for cooperation and connection with the clamping round bar 7.
[0026] As shown in the drawings, Figure 1 As shown, the cross section of the clamping round bar 7 is T-shaped, the head of the clamping round bar 7 is clamped in the circular hole inside the connecting groove 5, and the rod part of the clamping round bar 7 is connected with the testing machine by passing through the circular hole of the connecting groove 5.
[0027] As shown in the drawings, Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, each clamping assembly includes two clamping blocks 1; each clamping block 1 is provided with a front and rear threaded hole 104, so that the two clamping blocks 1 can be connected by a stud 8, and the connecting rod 2 and the clamping round bar 7 can be clamped, the clamping surface of the two clamping blocks 1 is provided with a groove 101, the two grooves 101 are combined into a clamping groove for placing the end of the test piece 3, and the clamping surface of the two clamping blocks 1 is provided with a semicircular hole 103 connected with the groove, and the two semicircular holes 103 are combined into a through hole for cooperation and connection with the connecting rod 2.
[0028] As shown in the drawings, Figures 1-3 As shown, a threaded hole 102 is arranged on one of the clamping ends of each clamping block 1, and a bolt 4 is arranged on the threaded hole 102 to press the connecting rod 2 and the test piece 3 in the clamping block 1, so as to eliminate the connection gap, and the bolt 4 can also be adjusted to adapt to test pieces 3 of different thicknesses.
[0029] As shown in the drawings, Figures 1-3 As shown, the two ends of the test piece 3 are placed in the grooves of the clamping blocks 1 through the through holes of the clamping blocks 1, the two connecting rods 2 are placed in the grooves of the clamping blocks 1 through the through holes of the clamping blocks 1, and the two ends of the test piece 3 are placed in the grooves of the clamping blocks 1 through the through holes of the clamping blocks 1.
[0030] As shown in the drawings, Figures 1-3 As shown, the two clamping blocks 1 are a group of clamping one end of the test piece 3 and the connecting rod 2 together, and the two clamping blocks 1 are fastened together by a stud 8.
[0031] As Figures 1-3 shown, the clamping round bar 7 passes through the round hole of the connecting groove 5 and comes out of the connecting groove 5, and the head part of the clamping round bar 7 abuts against the connecting groove 5, so that the clamping round bar 7 can rotate freely with the connecting groove 5.
[0032] As Figure 4 shown, the inner and outer surfaces of the clamping block 1 are coated with an insulating coating, so that the electrical signal interference caused by the contact between the clamp and the wire during the test can be prevented.
[0033] As Figure 7 shown, the middle connecting component part of the two connecting grooves 5 can be replaced according to different test sample types, for example, the round bar inner thread rod type connection can be used for the round bar thread test piece 9.
[0034] The utility model discloses a clamping block dumbbell type composite material test piece,
[0035] The clamping block 1, the connecting rod 2, the bolt 4, the pin 6, the clamping round bar 7 and the connecting groove 5 are made of high-temperature-resistant, high-rigid and high-strength metal materials.
[0036] The inner and outer surfaces of the clamping block 1 are coated with an insulating material.
[0037] The bolt 4 is a standard part.
[0038] The test piece 3 is placed in the recess of the clamping block 1 through the semicircular hole 103 of the two clamping blocks 1, the two connecting rods 2 are respectively placed in the recess of the clamping block 1 through the semicircular hole 103 of the two clamping blocks 1, the connecting rod 2 is pressed against the test piece 3 through the bolt 4 on the clamping block 1, the two clamping blocks 1 are used for clamping one end of the test piece 3 and the connecting rod 2 together, the two clamping blocks 1 are fastened together through the stud 8, the pin 6 connects the two parts through the through hole two 501 of the connecting rod 2 and the connecting groove 5,
[0039] The clamping round bar 7 passes through the round hole of the connecting groove 5 and comes out of the connecting groove 5, and the head part of the clamping round bar 7 abuts against the connecting groove 5, so that the clamping round bar 7 can rotate freely with the connecting groove 5.
[0040] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.
Claims
1. A multifunctional tensile strength testing fixture that requires no adhesive bonding, characterized in that: It includes two connecting components; each of the connecting components includes a connecting rod (2), a connecting groove (5), a pin (6) and a clamping round bar (7); the connecting groove (5) is connected to the testing machine through the clamping round bar (7), the connecting groove (5) is detachably connected to one end of the connecting rod (2) through the pin (6), the other end of the connecting rod (2) is connected to the test piece (3) through the clamping component, or the other end of the connecting rod (2) is threadedly connected to the round bar threaded test piece (9).
2. The adhesive-free multifunctional tensile strength testing fixture according to claim 1, characterized in that: One end of the connecting rod (2) is provided with a through hole for installing a pin (6), and the other end of the connecting rod (2) is provided with a frustum for connecting the clamping assembly and the connecting groove (5).
3. The adhesive-free multifunctional tensile strength testing fixture according to claim 1, characterized in that: One end of the connecting rod (2) is provided with a through hole for installing a pin (6), and the other end of the connecting rod (2) is provided with a threaded hole for connecting a round bar-shaped threaded specimen (9).
4. A multifunctional tensile strength testing fixture without adhesive as described in claim 2 or 3, characterized in that: The two side plates of the connecting groove (5) are provided with through holes (501) for connecting with the pin (6), and the bottom plate of the connecting groove (5) is provided with a round hole for connecting with the clamping round bar (7).
5. The adhesive-free multifunctional tensile strength testing fixture according to claim 4, characterized in that: The cross-section of the clamping rod (7) is T-shaped. The head of the clamping rod (7) is stuck in the round hole inside the connecting groove (5). The rod part of the clamping rod (7) passes through the round hole of the connecting groove (5) and connects to the testing machine.
6. The adhesive-free multifunctional tensile strength testing fixture according to claim 2, characterized in that: Each clamping assembly includes two clamping blocks (1); each clamping block (1) has a threaded hole (104) that runs through the front and back so that the two clamping blocks (1) can be connected by a stud (8) and clamp the connecting rod (2) and the clamping round rod (7). The clamping surfaces of the two clamping blocks (1) are provided with grooves (101), and the two grooves (101) are combined into a clamping groove for placing the end of the test piece (3). The clamping surfaces of the two clamping blocks (1) are provided with semi-circular holes (103) that connect to the grooves, and the two semi-circular holes (103) are combined into a through hole for connecting with the connecting rod (2).
7. The adhesive-free multifunctional tensile strength testing fixture according to claim 6, characterized in that: Each clamping block (1) has a threaded hole three (102) on one of its clamping ends, and a connecting rod (2) and a test piece (3) are pressed into the clamping block (1) by a bolt (4) installed on the threaded hole three (102).
8. The adhesive-free multifunctional tensile strength testing fixture according to claim 7, characterized in that: The clamping block (1), connecting rod (2), bolt (4), pin (6), clamping round rod (7), and connecting groove (5) are made of high-temperature resistant, high-rigidity, and high-strength metal materials.
9. A multifunctional tensile strength testing fixture without adhesive as described in claim 7, characterized in that: The clamp (1) is coated with an insulating coating on both the inside and outside.