CN211978528U

CN211978528U - Grid cloth tensile test anchor clamps

Info

Publication number: CN211978528U
Application number: CN202020716015.9U
Authority: CN
Inventors: 朱韦娟; 胡建成; 吴国新
Original assignee: Jiashan Kezheng Construction Engineering Testing Co ltd
Current assignee: Jiashan Kezheng Construction Engineering Testing Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-11-20
Anticipated expiration: 2030-04-30

Abstract

The utility model provides a net cloth tensile test anchor clamps, including the last fixture and the lower fixture that are opposite each other from top to bottom, go up fixture including being the last clamp of "U" type, "U" type comprises a back timber and two foundation columns, the bilateral symmetry of going up the clamp sets up the centre gripping subassembly, go up the centre gripping subassembly and include the screw, transversely set up the upper thread through-hole on the foundation column, the upper screw penetrates and forms screw-thread fit connection in the upper thread through-hole, the inner that the upper screw stretched into the upper nip connects the clamping piece, attached rubber pad on the medial surface of upper clamping piece; the lower clamping mechanism comprises a U-shaped lower clamping body, the U-shaped lower clamping body consists of a bottom beam and two top columns, lower clamping assemblies are symmetrically arranged on two sides of the lower clamping body and comprise lower screws, lower threaded through holes are transversely formed in the top columns, the lower screws penetrate into the lower threaded through holes to form threaded fit connection, the inner ends of the lower screws extending into the lower clamping openings are connected with lower clamping pieces, and lower rubber pads are attached to the inner side surfaces of the lower clamping pieces.

Description

Grid cloth tensile test anchor clamps

Technical Field

The utility model belongs to the technical field of machinery, a test equipment, especially a net cloth tensile test anchor clamps are related to.

Background

Before the finished product is sold, the grid cloth needs to be sampled and subjected to a tensile test experiment so as to ensure that the tolerance of the grid cloth meets the requirement, and further ensure the quality and the economic benefit of the finished product. The existing test fixture clamps two ends of the mesh cloth by adopting a metal body, and the surface of the metal body is smooth, so that when the metal body is clamped and stretched to a certain degree, the two ends of the mesh cloth are easy to fall off from the clamping, and the test fails.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided one kind and adopted rubber pad clamping structure, utilized the back rubber of exerting pressure to take place elastic deformation in order to increase the net cloth tensile test anchor clamps of friction clamping-force.

The purpose of the utility model can be realized by the following technical proposal: a mesh fabric tensile test clamp comprises an upper clamping mechanism and a lower clamping mechanism which are opposite up and down, wherein the upper clamping mechanism comprises an upper clamp body in an inverted U shape, the inverted U shape is composed of a top beam and two bottom columns, the top beam and the two bottom columns are encircled to form an upper clamp opening with a downward opening, upper clamping components are symmetrically arranged on two sides of the upper clamp body, each upper clamping component comprises an upper screw, an upper threaded through hole is transversely formed in each bottom column, the upper screws penetrate the upper threaded through holes to form threaded fit connection, the inner ends of the upper clamp openings extend into the upper clamping pieces, and rubber pads are attached to the inner side surfaces of the upper clamping pieces; lower fixture is including the lower clamp that is "U" type, the "U" type comprises a floorbar and two apical columns, a floorbar and two apical column enclose and form the lower clamp mouth that the opening is up, the bilateral symmetry of clamp sets up down the centre gripping subassembly down, lower centre gripping subassembly includes screw down, horizontal division establishes down the screw thread through-hole on the apical column, down the screw penetrates and forms screw-thread fit connection in the screw thread through-hole down, the screw stretches into down the inner of lower clamp mouth is connected lower clamping piece, attached lower rubber pad on the medial surface of lower clamping piece.

The application method of the mesh cloth tensile test clamp comprises the steps that the upper screws in the upper clamping assembly are screwed outwards to pull open a clamping gap between the two upper rubber pads, the lower screws in the lower clamping assembly are screwed outwards to pull open a clamping gap between the two lower rubber pads, the top end of a rectangular piece of mesh cloth is placed in the clamping gap between the two upper rubber pads, the upper screws are screwed inwards to enable the two upper rubber pads to clamp the top end of the mesh cloth, the bottom end of the mesh cloth is placed in the clamping gap between the two lower rubber pads, the lower screws are screwed inwards to enable the two lower rubber pads to clamp the bottom end of the mesh cloth, and then the mesh cloth is tested by upwards pulling the clamping assembly. Both ends all set up rubber pad clamping structure from top to bottom, utilize the rubber pad elastic deformation under the increasement pressure in order to increase the frictional force clamping degree to net cloth, avoid net cloth to drop in tensile test.

In the grid cloth tensile test fixture, an upper bearing is fixedly arranged at the center of the upper clamping piece, and the inner end of the upper screw penetrates into the upper bearing to form rotary connection; the center of the lower clamping piece is fixedly provided with a lower bearing, and the inner end of the lower screw penetrates into the lower bearing to form rotary connection. The screw and the clamping piece can be connected in a relatively rotating manner by arranging the bearing, so that the clamping piece can not be driven to synchronously rotate in the screwing process of the screw, and the clamping piece only moves in the horizontal direction after being pushed by the screw.

In the grid cloth tensile test fixture, the inner side surface of the upper rubber pad is provided with upper wavy teeth, and two relatively-weighed upper rubber pads are meshed and clamped through the upper wavy teeth; the inner side surface of the lower rubber pad is provided with lower wavy teeth, and the two symmetrical lower rubber pads are engaged and clamped through the lower wavy teeth. The wavy teeth are engaged and clamped to increase the clamping friction force, so that the phenomenon of slippage of the mesh cloth in stretching is further avoided.

In the grid cloth tensile test fixture, the upper rubber pad is square, and the top edge of the upper rubber pad is attached to the upper clamping opening; the lower rubber pad is square, and the bottom edge of the lower rubber pad is attached to the lower clamping opening. The square structure forms a straight edge to be attached to each other so as to avoid rotation and slipping.

In the above-mentioned net cloth tensile test fixture, the upper part of the upper clamping mechanism is connected with the upper pull rod, the upper pull rod is internally provided with an upper threaded hole, the top end of the upper clamping mechanism extends out of the upper stud, and the upper stud penetrates into the upper threaded hole to form threaded fit connection. The height position of the upper clamp body is adjusted by rotating the upper stud, and the rotating angle of the upper clamp body is adjusted to enable the upper clamping surface and the lower clamping surface to be located in the same plane.

In the grid cloth tensile test fixture, the lower base is connected below the lower clamping mechanism, the lower base is internally provided with a lower threaded hole, the bottom end of the lower clamping mechanism extends out of the lower stud, and the lower stud penetrates into the lower threaded hole to form threaded fit connection. The height position of the lower clamp body is adjusted by rotating the lower stud, and the rotating angle of the lower clamp body is adjusted to enable the upper clamping surface and the lower clamping surface to be located in the same plane.

Compared with the prior art, this net cloth tensile test anchor clamps's advantage is:

increase rubber pad clamping structure at the medial surface of metal body, utilize the back rubber that exerts pressure to take place elastic deformation in order to increase the friction clamping-force to realize effectual net cloth clamping action, further guarantee experimental validity, strict the accuse to net cloth performance, ensure high-quality product.

Drawings

Fig. 1 is a schematic structural view of the mesh fabric tensile test jig.

In the figure, 1, an upper pull rod; 2. an upper stud; 3. an upper clamp body; 4. screwing; 5. an upper bearing; 6. an upper clamping piece; 7. a rubber pad is arranged; 8. a lower clamp body; 9. screwing down; 10. a lower bearing; 11. a lower clamping piece; 12. a rubber pad is arranged; 13. a lower stud; 14. a lower base.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the mesh fabric tensile test fixture comprises an upper clamping mechanism and a lower clamping mechanism which are opposite up and down, wherein the upper clamping mechanism comprises an n-shaped upper clamping body 3, the n-shaped upper clamping body consists of a top beam and two bottom columns, the top beam and the two bottom columns are encircled to form an upper clamping opening with a downward opening, upper clamping components are symmetrically arranged at two sides of the upper clamping body 3, each upper clamping component comprises an upper screw 4, an upper threaded through hole is transversely formed in each bottom column, the upper screws 4 penetrate the upper threaded through holes to form threaded fit connection, the inner ends of the upper screws 4 extend into the upper clamping opening to be connected with an upper clamping piece 6, and a rubber pad 7 is attached to the inner side surface of the upper clamping piece 6; the lower clamping mechanism comprises a U-shaped lower clamping body 8, the U-shaped lower clamping body consists of a bottom beam and two top columns, a lower clamping opening with an upward opening is formed by the bottom beam and the two top columns in a surrounding mode, lower clamping assemblies are symmetrically arranged on two sides of the lower clamping body 8 and comprise lower screws 9, lower threaded through holes are formed in the top columns in a transverse mode, the lower screws 9 penetrate into the lower threaded through holes to form threaded fit connection, the inner ends, extending into the lower clamping opening, of the lower screws 9 are connected with lower clamping pieces 11, and lower rubber pads 12 are attached to the inner side faces of the lower clamping pieces 11.

The application method of the mesh cloth tensile test clamp comprises the steps of firstly screwing the upper screw 4 in the upper clamping assembly to the outer side to pull apart the clamping gap between the two upper rubber pads 7, screwing the lower screw 9 in the lower clamping assembly to the outer side to pull apart the clamping gap between the two lower rubber pads 12, putting the top end of a rectangular mesh cloth into the clamping gap between the two upper rubber pads 7, screwing the upper screw 4 inwards to enable the two upper rubber pads 7 to clamp the top end of the mesh cloth, putting the bottom end of the mesh cloth into the clamping gap between the two lower rubber pads 12, screwing the lower screw 9 inwards to enable the two lower rubber pads 12 to clamp the bottom end of the mesh cloth, and then testing the mesh cloth by pulling the clamping assembly upwards. Both ends all set up rubber pad clamping structure from top to bottom, utilize the rubber pad elastic deformation under the increasement pressure in order to increase the frictional force clamping degree to net cloth, avoid net cloth to drop in tensile test.

An upper bearing 5 is fixedly arranged in the center of the upper clamping piece 6, and the inner end of the upper screw 4 penetrates into the upper bearing 5 to form rotary connection; the center of the lower clamping piece 11 is fixedly provided with a lower bearing 10, and the inner end of the lower screw 9 penetrates into the lower bearing 10 to form rotary connection. The screw and the clamping piece can be connected in a relatively rotating manner by arranging the bearing, so that the clamping piece can not be driven to synchronously rotate in the screwing process of the screw, and the clamping piece only moves in the horizontal direction after being pushed by the screw.

The inner side surface of the upper rubber pad 7 is provided with upper wavy teeth, and the two opposite upper rubber pads 7 are engaged and clamped through the upper wavy teeth; lower wavy teeth are arranged on the inner side surface of the lower rubber pad 12, and the two symmetrical lower rubber pads 12 are engaged and clamped through the lower wavy teeth. The wavy teeth are engaged and clamped to increase the clamping friction force, so that the phenomenon of slippage of the mesh cloth in stretching is further avoided.

The upper rubber pad 7 is square, and the top edge of the upper rubber pad 7 is attached to the upper clamping opening; the lower rubber pad 12 is square, and the bottom edge of the lower rubber pad 12 is attached to the lower clamping opening. The square structure forms a straight edge to be attached to each other so as to avoid rotation and slipping.

An upper pull rod 1 is connected above the upper clamping mechanism, an upper threaded hole is formed in the upper pull rod 1, an upper stud 2 extends out of the top end of the upper clamping mechanism, and the upper stud 2 penetrates into the upper threaded hole to form threaded fit connection. The height position of the upper clamp body 3 is adjusted by rotating the upper stud 2, and the rotating angle of the upper clamp body 3 is adjusted to enable the upper clamping surface and the lower clamping surface to be positioned in the same plane.

The lower base 14 is connected below the lower clamping mechanism, a lower threaded hole is formed in the lower base 14, a lower stud 13 extends out of the bottom end of the lower clamping mechanism, and the lower stud 13 penetrates into the lower threaded hole to form threaded fit connection. The height position of the lower clamp body 8 is adjusted by rotating the lower stud 13, and the rotating angle of the lower clamp body 8 is adjusted to enable the upper clamping surface and the lower clamping surface to be located in the same plane.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the upper tie rod 1 is used more herein; an upper stud 2; an upper clamp body 3; an upper screw 4; an upper bearing 5; an upper clamping piece 6; a rubber pad 7 is arranged; a lower clamp body 8; a lower screw 9; a lower bearing 10; a lower clip 11; a lower rubber pad 12; a lower stud 13; sub-base 14, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A mesh fabric tensile test clamp comprises an upper clamping mechanism and a lower clamping mechanism which are opposite up and down, and is characterized in that the upper clamping mechanism comprises an n-shaped upper clamping body, the n-shaped upper clamping body consists of a top beam and two bottom columns, the top beam and the two bottom columns are encircled to form an upper clamping opening with a downward opening, upper clamping components are symmetrically arranged on two sides of the upper clamping body, each upper clamping component comprises an upper screw, an upper threaded through hole is transversely formed in each bottom column, the upper screws penetrate into the upper threaded through holes to form threaded fit connection, the upper screws extend into the inner ends of the upper clamping openings to connect with upper clamping pieces, and a rubber pad is attached to the inner side faces of the upper clamping pieces; lower fixture is including the lower clamp that is "U" type, the "U" type comprises a floorbar and two apical columns, a floorbar and two apical column enclose and form the lower clamp mouth that the opening is up, the bilateral symmetry of clamp sets up down the centre gripping subassembly down, lower centre gripping subassembly includes screw down, horizontal division establishes down the screw thread through-hole on the apical column, down the screw penetrates and forms screw-thread fit connection in the screw thread through-hole down, the screw stretches into down the inner of lower clamp mouth is connected lower clamping piece, attached lower rubber pad on the medial surface of lower clamping piece.

2. The clamp for the tensile test of the mesh fabric according to claim 1, wherein an upper bearing is fixedly arranged at the center of the upper clamping piece, and the inner end of the upper screw penetrates into the upper bearing to form a rotary connection; the center of the lower clamping piece is fixedly provided with a lower bearing, and the inner end of the lower screw penetrates into the lower bearing to form rotary connection.

3. The mesh cloth tensile test fixture of claim 1, wherein the inner side surface of the upper rubber pad is provided with upper wavy teeth, and two opposite upper rubber pads are engaged and clamped through the upper wavy teeth; the inner side surface of the lower rubber pad is provided with lower wavy teeth, and the two symmetrical lower rubber pads are engaged and clamped through the lower wavy teeth.

4. The mesh cloth tensile test fixture of claim 1, wherein the upper rubber pad is square, and the top edge of the upper rubber pad is attached to the upper clamping opening; the lower rubber pad is square, and the bottom edge of the lower rubber pad is attached to the lower clamping opening.

5. The mesh fabric tensile test fixture of claim 1, wherein an upper pull rod is connected above the upper clamping mechanism, an upper threaded hole is formed in the upper pull rod, an upper stud extends out of the top end of the upper clamping mechanism, and the upper stud penetrates into the upper threaded hole to form threaded fit connection.

6. The mesh fabric tensile test fixture of claim 1, wherein a lower base is connected below the lower clamping mechanism, a lower threaded hole is formed in the lower base, a lower stud extends out of the bottom end of the lower clamping mechanism, and the lower stud penetrates into the lower threaded hole to form threaded fit connection.