Tensile test tool

Abstract

A tensile test tool comprises a bottom plate, two pairs of movable holes are formed in the bottom plate in the length direction of the bottom plate, end seats are installed at the two ends of the bottom plate respectively, lead screws are rotationally arranged on the end seats, the thread turning directions of the two ends of each lead screw are opposite, movable seats are arranged at the two ends of each lead screw respectively, penetrating rods are arranged on the movable seats, and kidney-shaped plates are installed at the upper ends of each pair of penetrating rods. A pair of guide pins are arranged at the outer side ends of the clamping tables; springs sleeve the lower ends of the guide pins; clamping plates sleeve the guide pins; a pair of vertical plates are arranged on the clamping plates; the clamping lead screw is in threaded connection with a threaded connection base, the threaded connection base is installed at the upper end of the guide pin, and a radial stretching mechanism is arranged on the clamping table. Through the radial stretching mechanism and the axial stretching mechanism, stretching tests can be carried out on the fiber tube in two directions at the same time, so that the accuracy of the stretching tests is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber tube testing, in particular to a tensile testing tool. Background Art

[0002] After the fiber tube is processed, its various properties need to be tested. When testing the tensile strength of the fiber tube, the fiber tube is currently cut into sections, one end of the fiber tube is clamped on a clamp, and the other end is clamped on a clamp of a stretching mechanism, and then the fiber tube is pulled by the stretching mechanism until the fiber tube is broken, and then the tension provided by the stretching mechanism is recorded, and then the clamp is canceled and the radial stretching test of the fiber tube is performed.

[0003] Since the fiber tube has tensile forces in both radial and axial directions during use, and the above-mentioned test method can only test the tensile force in one direction, it is easy to cause inaccurate test results. Utility Model Content

[0004] The utility model provides a tensile test tool to solve the deficiencies of the above-mentioned prior art, improves the accuracy of the test through a bidirectional tensile test method, and has strong practicality.

[0005] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0006] The cam is provided with a plurality of movable holes, each of which is provided with an end seat, and a screw rod is rotatably provided on the end seat. The threads at the two ends of the screw rod are rotated in opposite directions. The two ends of the screw rod are provided with movable seats, and a through rod is provided on the movable seat. The through rod passes through the movable hole. A waist-shaped plate is installed on the upper end of each pair of through rods. An upper extension platform is provided on the waist-shaped plate. A clamping platform is provided on the upper end of the upper extension platform. A pair of guide pins are provided at the outer end of the clamping platform. A spring is provided at the lower end of the guide pin. A clamping plate is provided on the guide pin. A pair of vertical plates are provided on the clamping plate. An inclined hole is provided on the vertical plate. A moving rod is passed through the inclined hole. A moving block is provided on the moving rod. When the moving rod moves, it can act on the inclined hole, so that the clamping plate and the clamping platform clamp the two ends of the fiber tube. When the stretching operation is performed, the two ends of the fiber tube are stretched at the same time, thereby improving the test efficiency. At the same time, in order to clearly display the magnitude of the tensile force, a corresponding tensile force metering device can be provided on the waist-shaped plate. A clamping screw is rotatably arranged on the moving block, a screw seat is screwed on the clamping screw, the screw seat is installed on the upper end of the guide pin, and a radial stretching mechanism is arranged on the clamping table. Through the radial stretching mechanism and the above-mentioned axial stretching mechanism, the fiber tube can be stretched in two directions at the same time, thereby improving the accuracy of the stretching test.

[0007] Furthermore, an arrow is provided at one end of the waist-shaped plate, and a scale line is provided on the bottom plate, with the arrow pointing toward the scale line, so that the movement amount identification during the test is convenient. For partial compliance testing, the arrow can be moved to the calibrated scale, and then the tensile strength of the fiber tube can be observed to quickly make a quick judgment on whether the standard is met.

[0008] Furthermore, an end cap is provided at the outer end of the clamping screw rod to facilitate the rotation of the clamping screw rod.

[0009] Furthermore, a lower clamping seat is provided on the inner side of the clamping table, and an anti-skid pattern is provided on the lower clamping seat to improve the stability after clamping and avoid the problem of the fiber tube slipping during the stretching process.

[0010] Furthermore, the lower wall of the clamping table is provided with a lower extension plate, the lower extension plate is provided with a cross bar, the outer end of the cross bar is provided with a T-shaped plate, the two ends of the T-shaped plate are respectively provided with waist-shaped holes, the outer end of the cross bar is provided with a pair of limit plates, the limit plates are located on both sides of the T-shaped plate, the cross bar passes through the waist-shaped hole, the upper end of the T-shaped plate is provided with a stretching screw, the outer end of the stretching screw is provided with an end turn cap, the inner end of the stretching screw is provided with a concave part, the upper end of the concave part is provided with a down-pressing screw, and the lower end of the down-pressing screw is provided with a down-pressing plate. The radial stretching mechanism provided above can clamp the fiber tube through the down-pressing plate and the concave part, and can also pull the fiber tube outward through the rotation of the stretching screw, and make the fiber tube have a certain radial stretching force.

[0011] The advantages of the above technical solution are:

[0012] The utility model improves the accuracy of the tensile fracture performance test of the fiber tube by means of bidirectional stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 The three-dimensional structure of one embodiment is shown Figure 1 .

[0015] Figure 2 An enlarged view of A is shown.

[0016] Figure 3 An enlarged view of B is shown.

[0017] Figure 4 The three-dimensional structure of one embodiment is shown Figure 2 . DETAILED DESCRIPTION

[0018] like Figure 1~Figure 4As shown, a tensile test fixture comprises a bottom plate 1, and two pairs of movable holes 10 are opened on the bottom plate 1 along its length direction. End seats 2 are respectively installed at both ends of the bottom plate 1, and screw rods 20 are rotatably installed on the end seats 2. The threads at both ends of the screw rod 20 are rotated in opposite directions. Movable seats 21 are respectively installed at both ends of the screw rod 20, and through rods 22 are installed on the movable seats 21. The through rods 22 pass through the movable holes 10. A waist-shaped plate 23 is installed at the upper end of each pair of through rods 22, and an arrow 24 is provided at one end of the waist-shaped plate 23. A scale line is provided on the bottom plate 1, and the arrow 24 faces the scale line. An upper extension platform 25 is provided on the waist-shaped plate 23, and a clamping platform 26 is respectively provided at the upper end of the upper extension platform 25. A lower clamping seat is provided on the inner side end of the clamping platform 26, and an anti-slip pattern is provided on the lower clamping seat. A pair of guide pins 3 are provided at the outer end of the clamping platform 26, a spring 30 is sleeved at the lower end of the guide pin 3, a clamping plate 31 is sleeved on the guide pin 3, a pair of vertical plates 37 are provided on the clamping plate 31, an inclined hole 38 is opened on the vertical plate 37, a moving rod 36 is passed through the inclined hole 38, a moving block 35 is provided on the moving rod 36, a clamping screw rod 33 is rotatably provided on the moving block 35, and an end cap 34 is provided at the outer end of the clamping screw rod 33. A screw seat 32 is screwed on the clamping screw rod 33, and the screw seat 32 is installed on the upper end of the guide pin 3.

[0019] The lower wall of the clamping table 26 is provided with a lower extension plate 4, and the lower extension plate 4 is provided with a cross bar 40. The outer end of the cross bar 40 is provided with a T-shaped plate 41, and waist-shaped holes 42 are respectively opened at both ends of the T-shaped plate 41. A pair of limit plates are provided at the outer end of the cross bar 40, and the limit plates are located on both sides of the T-shaped plate 41. The cross bar 40 passes through the waist-shaped holes 42. A stretching screw rod 44 is provided at the upper end of the T-shaped plate 41, and an end rotating cap 45 is provided at the outer end of the stretching screw rod 44. A concave piece 46 is provided at the inner end of the stretching screw rod 44, and a downward pressing screw rod 47 is provided at the upper end of the concave piece 46, and a downward pressing plate 48 is provided at the lower end of the downward pressing screw rod 47.

[0020] When testing the tensile properties of the fiber tube in this embodiment, the operator places the two ends of the fiber tube on the clamping table 26, and rotates the clamping screw 33 to move the moving rod 36, and as the moving rod 36 moves, it will act on the inclined hole 38, so that the clamping plate 31 moves downward, and at the same time, the two ends of the fiber tube are clamped by the clamping plate 31 and the clamping table 26. Then, by rotating the stretching screw 44, the concave part 46 is sleeved on the fiber tube, and by rotating the pressing screw 47, the lower pressing plate 48 clamps the fiber tube, and after the clamping is completed. First, the fiber tube is stretched radially by rotating the stretching screw 44, and then the screw 20 is rotated to make the clamping table 26 pull the two ends of the fiber tube to extend outward until the tensile force provided when the limit is broken is measured.

[0021] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A tensile test tool, characterized in that: The bottom plate (1) comprises two pairs of movable holes (10) formed along the length direction of the bottom plate (1); The bottom plate (1) is provided with an end seat (2) at both ends, a screw rod (20) is rotatably provided on the end seat (2), the screw threads at both ends of the screw rod (20) are in opposite directions, a movable seat (21) is provided at both ends of the screw rod (20), a through rod (22) is provided on the movable seat (21), the through rod (22) is passed through the movable hole (10), a waist-shaped plate (23) is provided at the upper end of each pair of through rods (22), an upper extension platform (25) is provided on the waist-shaped plate (23), a clamping platform (26) is provided at the upper end of the upper extension platform (25), and the outer side of the clamping platform (26) is provided. A pair of guide pins (3) are provided at the end, a spring (30) is sleeved on the lower end of the guide pin (3), a clamping plate (31) is sleeved on the guide pin (3), a pair of vertical plates (37) are provided on the clamping plate (31), an inclined hole (38) is opened on the vertical plate (37), a moving rod (36) is passed through the inclined hole (38), a moving block (35) is provided on the moving rod (36), a clamping screw rod (33) is rotatably provided on the moving block (35), a screw seat (32) is screwed on the clamping screw rod (33), and the screw seat (32) is installed on the upper end of the guide pin (3).

2. The tensile test tool according to claim 1, characterized in that: An arrow (24) is provided at one end of the waist-shaped plate (23), and a scale line is provided on the bottom plate (1), with the arrow (24) pointing toward the scale line.

3. The tensile test tool according to claim 1, characterized in that: An end cap (34) is provided at the outer end of the clamping screw rod (33).

4. The tensile test tool according to claim 1, characterized in that: The inner side end of the clamping platform (26) is provided with a lower clamping seat on the upper side, and an anti-slip pattern is provided on the lower clamping seat.

5. The tensile test tool according to claim 1, characterized in that: The lower wall of the clamping table (26) is provided with a lower extension plate (4), the lower extension plate (4) is provided with a cross bar (40), the outer end of the cross bar (40) is provided with a T-shaped plate (41), both ends of the T-shaped plate (41) are respectively provided with waist-shaped holes (42), the outer end of the cross bar (40) is provided with a pair of limit plates, the limit plates are located on both sides of the T-shaped plate (41), the cross bar (40) is inserted into the waist-shaped holes (42), the upper end of the T-shaped plate (41) is provided with a stretching screw rod (44), the outer end of the stretching screw rod (44) is provided with an end rotating cap (45), the inner end of the stretching screw rod (44) is provided with a concave piece (46), the upper end of the concave piece (46) is provided with a lower pressing screw rod (47), and the lower end of the lower pressing screw rod (47) is provided with a lower pressing plate (48).

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