Sample positioning device of ring stiffness testing machine

Abstract

A sample positioning device of a ring stiffness testing machine relates to the technical field of detection equipment and comprises a detection frame, an upper cross beam and a lower cross beam are arranged in the detection frame, the upper cross beam is driven by an electrical measurement and control system to move up and down in the detection frame, and the lower cross beam is fixedly mounted in the detection frame. The center of the top face of the lower cross beam is provided with a halving graduated scale, sliding rails are symmetrically arranged on the two sides of the halving graduated scale, and sliding blocks are slidably connected into the sliding rails. The center dividing graduated scale is arranged at the center of the top surface of the lower cross beam, so that centering and measurement of a sample are facilitated; the slide rail and the slide block are arranged, so that the sample can be positioned, the contact surface of the slide block and the sample is provided with the rubber plug cap, friction force is increased, and damage to the sample is prevented; compared with the prior art, the accuracy of test results can be better guaranteed, and test data errors caused by incorrect sample placement positions of testers are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field, concretely relates to a ring rigidity testing machine sample positioning device. BACKGROUND

[0002] Ring rigidity testing machine is widely used in the determination of the ring rigidity of thermoplastic pipe and glass steel pipe with annular cross section, meets the requirement of PE double -walled corrugated pipe, winding pipe and various pipe standards, can complete pipe ring rigidity, ring flexibility, flat, bending, weld tensile test. Ring rigidity testing machine test principle lies in the force value and deformation value of pipe at constant speed deformation to determine ring rigidity. Commonly, water seepage and drainage pipe, sewage pipe, irrigation pipe, conveying pipe, slurry pipe, communication protection pipe etc. all need to carry out ring rigidity detection.

[0003] The lower crossbeam of the ring rigidity testing machine on the market is a flat structure, the general sample is a cylindrical pipeline, only with the upper and lower two big deformation rods, it is difficult to position the sample at the center of the pressure exerted by the upper and lower crossbeams, and the sample displacement may cause deviation to the final test result. UTILITY MODEL CONTENT

[0004] In view of the above technical problems of the prior art, the purpose of the utility model is to provide a ring rigidity testing machine sample positioning device, which can solve the technical problem that the lower crossbeam of the ring rigidity testing machine on the market is a flat structure, the general sample is a cylindrical pipeline, only with the upper and lower two big deformation rods, it is difficult to position the sample at the center of the pressure exerted by the upper and lower crossbeams, and the sample displacement may cause deviation to the final test result.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] The ring rigidity testing machine sample positioning device comprises a detection frame, an upper crossbeam and a lower crossbeam are arranged in the detection frame, the upper crossbeam can move up and down in the detection frame through the driving of an electrical measurement and control system, the lower crossbeam is fixedly installed in the detection frame, a center division scale is arranged on the top surface center of the lower crossbeam, slide rails are symmetrically arranged on the two sides of the center division scale, and slide blocks are slidably connected in the slide rails.

[0007] Preferably, rubber plugs are arranged on the opposite sides of the two slide blocks.

[0008] Preferably, the center division scale is engraved on the top surface of the lower crossbeam by laser, and the slide rails are fastened on the top surface of the lower crossbeam by screws.

[0009] Preferably, an upper deformation rod and a lower deformation rod are further arranged on the inner wall of the detection frame, the upper deformation rod and the lower deformation rod are located between the upper crossbeam and the lower crossbeam, the upper deformation rod is slidably connected to the inner wall of the detection frame, and the lower deformation rod is fixedly connected to the inner wall of the detection frame.

[0010] Compared with the existing technology, the present invention has the following advantages: The center scale is placed at the center of the top surface of the lower crossbeam, facilitating sample centering and measurement. The slide rail and slider facilitate sample positioning, and the rubber cap on the contact surface between the slider and the sample increases friction and prevents damage to the sample. Compared with the existing technology, the present invention can better ensure the accuracy of test results and reduce test data errors caused by incorrect sample placement by the tester. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Description of reference numerals:

[0014] 1-Detection frame, 2-upper beam, 3-lower beam, 4-center scale, 5-slide rail, 6-slider, 7-rubber plug, 8-upper deformation rod, 9-lower deformation rod. DETAILED DESCRIPTION

[0015] The following describes the invention of the present invention in detail by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Example

[0016] like Figure 1 As shown, the utility model discloses a sample positioning device for a ring stiffness testing machine, including a detection frame 1, wherein an upper crossbeam 2 and a lower crossbeam 3 are provided in the detection frame 1, and the upper crossbeam 2 is driven by an electrical measurement and control system to realize up and down movement in the detection frame 1, and the lower crossbeam 3 is fixedly installed in the detection frame 1, and a center scale 4 is provided at the center of the top surface of the lower crossbeam 3, and the center scale 4 is engraved on the top surface of the lower crossbeam 3 by laser. By setting the center scale 4, it is convenient to center and measure the sample; slide rails 5 are symmetrically provided on both sides of the center scale 4, and the slide rails 5 are fastened to the top surface of the lower crossbeam 3 by screws, and sliders 6 are slidably connected in the slide rails 5, and rubber plugging caps 7 are provided on the opposite sides of the two sliders 6. By setting the slide rails 5 and the sliders 6, it is convenient to position the sample, and the rubber plugging caps 7 are used on the contact surface between the slider 6 and the sample to increase friction and prevent damage to the sample.

[0017] An upper deformable rod 8 and a lower deformable rod 9 are also provided on the inner wall of the detection frame 1. The upper deformable rod 8 and the lower deformable rod 9 are located between the upper crossbeam 2 and the lower crossbeam 3. The upper deformable rod 8 is slidably connected to the inner wall of the detection frame 1, and the lower deformable rod 9 is fixedly connected to the inner wall of the detection frame 1.

[0018] When measuring a specimen, first mark its center point. Place the specimen on the center-divided scale 4, aligning the specimen's center with the zero mark on the scale. Use the center-divided scale 4 to reconfirm the specimen's length. Next, adjust the slider 6 within the guide rail 5 so that the rubber cap 7 at the end of the slider 6 contacts the specimen's sidewall, assisting the upper and lower deformation rods in securing the specimen. During the test, the upper crossbar 2 applies downward pressure, causing the cylindrical specimen to deform by 3%, 5%, or 10%, as required by the standard.

[0019] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and application concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A specimen positioning device for a ring stiffness testing machine, comprising a test frame (1), wherein an upper crossbeam (2) and a lower crossbeam (3) are provided in the test frame (1), wherein the upper crossbeam (2) is driven by an electrical measurement and control system to move up and down in the test frame (1), and the lower crossbeam (3) is fixedly installed in the test frame (1), and is characterized in that: A center scale (4) is provided at the center of the top surface of the lower crossbeam (3), and slide rails (5) are symmetrically provided on both sides of the center scale (4), and a slider (6) is slidably connected in the slide rails (5).

2. The specimen positioning device for a ring stiffness testing machine according to claim 1, characterized in that: The two opposite sides of the two sliders (6) are each provided with a rubber plugging cap (7).

3. The specimen positioning device for a ring stiffness testing machine according to claim 1, characterized in that: The center scale (4) is engraved on the top surface of the lower crossbeam (3) by laser, and the slide rail (5) is fastened to the top surface of the lower crossbeam (3) by screws.

4. The specimen positioning device for a ring stiffness testing machine according to claim 1, characterized in that: An upper deformable rod (8) and a lower deformable rod (9) are further provided on the inner wall of the detection frame (1). The upper deformable rod (8) and the lower deformable rod (9) are located between the upper crossbeam (2) and the lower crossbeam (3). The upper deformable rod (8) is slidably connected to the inner wall of the detection frame (1), and the lower deformable rod (9) is fixedly connected to the inner wall of the detection frame (1).

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