Annular tensile fixture

Abstract

The annular tensile fixture comprises two semicircular fixtures which are symmetrically arranged and an NOL ring, each semicircular clamp comprises a supporting piece, a side face baffle and a U-shaped piece. The supporting piece is provided with an NOL ring containing groove used for fixing an NOL ring. The side face baffle is detachably installed on the supporting piece and covers the NOL ring containing groove. An upper blocking cover used for preventing scraps from splashing in the testing process is installed on the supporting piece. The U-shaped piece is connected with the supporting piece through a plug pin. A cylindrical connecting column which is integrated with the U-shaped piece is mounted on the U-shaped piece; the connecting column is provided with a connecting through hole used for being connected with test equipment. The two sides of the NOL ring are placed in the NOL ring containing grooves of the two semicircular clamps respectively. According to the utility model, the side baffle and the upper baffle cover are designed on the supporting piece, so that chippings are prevented from splashing; and meanwhile, three bolts are designed, so that the supporting piece is prevented from sideslip.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clamp, concretely relates to a ring type stretching clamp. BACKGROUND

[0002] The standard of GB / T 1458-2023 "Mechanical property test method of fiber winding reinforced plastics ring sample" adopts the mode of screw connection to connect the testing equipment and NOL ring tooling, the screw thread of the connecting part is easy to break due to the large tensile strength of the carbon fiber NOL ring, and reliable test results cannot be obtained, and there is a safety hazard; the design of the carbon fiber NOL ring tensile clamp in the invention patent CN115436159A is too simple, but no safety protection structure is designed when the NOL ring breaks, and it is not convenient to connect with the testing mechanism; the anti-deflection NOL ring tensile clamp structure in the utility model patent CN207488068U can prevent the sample from deflecting during testing, but the connecting part is not connected with the testing equipment in the form of a cylindrical protrusion, which is not convenient to install, and no safety protection structure is designed for the splashing of NOL ring tensile fracture debris. SUMMARY

[0003] The utility model just to solve the provide a kind of structure reliable, can test reliable result and safe ring type stretching clamp technical problem.

[0004] To solve the above technical problems, the technical solution of the utility model is a kind of ring type stretching clamp:

[0005] Two symmetrical half-round clamps and NOL ring are included;The half-round clamp includes a support, a side baffle and a U-shaped piece;The support is provided with a NOL ring placing groove for fixing the NOL ring;The side baffle is detachably installed on the support and covers the NOL ring placing groove;The support is provided with an upper cover for preventing debris from splashing during testing;The U-shaped piece is connected to the support by a bolt;The U-shaped piece is provided with a cylindrical connecting column which is integral with itself;The connecting column is provided with a connecting hole for connecting the testing equipment;The NOL ring is placed in the NOL ring placing groove of the half-round clamp on both sides.

[0006] Three first mounting holes are provided on the support, and the corresponding U-shaped piece is also provided with three second mounting holes corresponding to the three first mounting holes, and the corresponding bolt is three, and the three bolts are respectively inserted into the three first mounting holes and the three second mounting holes.

[0007] The three first mounting holes are distributed in the form of an isosceles triangle on the support.

[0008] The side baffle is connected with the support by bolts.

[0009] The NOL ring placement groove is in the shape of a minor arc.

[0010] The technical effects achieved by the utility model are as follows:

[0011] 1. The utility model discloses a side baffle and an upper baffle are designed on the support, preventing debris from splashing; meanwhile, three bolts are designed, preventing the support from sliding sideways;

[0012] 2. The connecting column connected with the testing equipment is in the shape of a cylinder, and the connecting column and the U-shaped piece are in an integral structure, ensuring the stability of the structure; three second installation through holes corresponding to the three first installation through holes on the support are opened on the U-shaped piece, and the second installation through holes and the first installation through holes are in one-to-one correspondence, facilitating installation; moreover, the testing structure is connected through the bolts, ensuring the stability of the testing structure and preventing deviation. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further explained in detail in combination with the drawings and specific embodiments:

[0014] Fig. 1 It is a structural schematic view of the semicircular clamp of the utility model;

[0015] Fig. 2 It is an exploded view of the semicircular clamp;

[0016] Fig. 3 It is a structural schematic view of a ring type stretching clamp of the utility model. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] Referring to Figs. 1 to 3 .

[0019] The utility model provides a kind of ring type tensile fixture, including two symmetrically arranged semicircular clamps and NOL ring 21;Specifically, semicircular clamp includes support 1, side baffle 2 and U-shaped piece 3, NOL ring placing groove 4 for fixing NOL ring 21 is opened in support 1, and the NOL ring placing groove 4 is inferior arc shape;Side baffle 2 can be detachably installed on support 1 and covers NOL ring placing groove 4, specifically, side baffle 2 is connected with support 1 by bolt;Upper cover 5 for preventing the splashing of debris in test process is installed on support 1;U-shaped piece 3 is connected with support 1 by bolt 6, specifically, three first installation through holes 11 are opened in support 1, and corresponding U-shaped piece 3 is also opened with three second installation through holes 12 corresponding to three first installation through holes 11, corresponding bolt 6 is three, and three bolt 6 is respectively inserted with three first installation through holes 11 and three second installation through holes 12, and the three second installation through holes 12 of the utility model U-shaped piece 3 are one-to-one corresponding with the three first installation through holes 11 of support 1, and are fixed by three bolt 6 (reference Fig. 1 ), ensure the stability of test structure, prevent deviation;More specifically, three first installation through holes 11 are isosceles triangle distributed on support 1.

[0020] The connecting column 7 that is integral with itself and is cylindrical is installed on U-shaped piece 3, and connecting through hole 8 for connecting test equipment is opened in connecting column 7;The connecting column 7 of the utility model is cylindrical when being connected with test equipment, convenient for being inserted into the internal connector of test equipment;U-shaped piece 3 and connecting column 7 are integrated structure, ensure the stability of structure, structure is stable, safe and reliable.

[0021] NOL ring 21 is placed in the NOL ring placing groove 4 of two semicircular clamps on both sides (reference Fig. 3 );The utility model is used in, first, NOL ring 21 is placed in the NOL ring placing groove 4 of two semicircular clamps on both sides in support 1, then the upper side baffle 2 is fixed on the support 1 of two semicircular clamps by bolt, then the U-shaped piece 3 and support 1 of semicircular clamp are connected by bolt 6, finally, the connecting column 7 of two semicircular clamps is connected with test device respectively, and the interval between two semicircular clamps is enlarged by test device, so as to test the tensile strength of NOL ring 21;The utility model designs side baffle 2 and upper cover 5, prevents the splashing of debris.

Claims

1. A ring-shaped tension clamp, characterized in that: The device includes two symmetrically arranged semi-circular clamps and a NOL ring (21); the semi-circular clamps include a support (1), a side baffle (2), and a U-shaped component (3); the support (1) has a NOL ring placement groove (4) for fixing the NOL ring (21); the side baffle (2) is detachably installed on the support (1) and covers the NOL ring placement groove (4); the support (1) is equipped with an upper cover (5) to prevent debris from splashing during the test; the U-shaped component (3) is connected to the support (1) by a pin (6); the U-shaped component (3) is equipped with a cylindrical connecting post (7) that is integral with itself; the connecting post (7) has a connecting through hole (8) for connecting the test equipment; the NOL ring (21) is placed in the NOL ring placement groove (4) of the two semi-circular clamps on both sides.

2. The ring-shaped tension clamp according to claim 1, characterized in that: The support member (1) has three first mounting through holes (11), and the corresponding U-shaped member (3) also has three second mounting through holes (12) that correspond to the three first mounting through holes (11). There are three corresponding pins (6), and the three pins (6) are respectively inserted into the three first mounting through holes (11) and the three second mounting through holes (12).

3. The ring-shaped tension clamp according to claim 1, characterized in that: The three first mounting through holes (11) are distributed in an isosceles triangle on the support (1).

4. The ring-shaped tension clamp according to claim 1, characterized in that: The side panel (2) is connected to the support member (1) by bolts.

5. A ring-shaped tension clamp according to claim 1, characterized in that: The NOL ring placement groove (4) is of inferior arc shape.

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