Device for testing tensile strength of polyethylene-wound solid-wall drainage pipe

Abstract

The utility model discloses a device for testing the tensile strength of a polyethylene wound solid-wall drain pipe, which comprises an upper tensile clamp and a lower tensile clamp which are respectively fixed on an upper tensile machine and a lower tensile machine through mounting grooves at the tops of the upper tensile clamp and the lower tensile clamp. The upper stretching clamp and the lower stretching clamp are connected with the upper ends and the lower ends of the two connected polyethylene winding solid-wall drainage pipes through a plurality of adjustable clamping structures correspondingly. The multiple adjustable clamping structures on the stretching clamp are distributed in an array mode with the circle center as the center of the stretching clamp, and each adjustable clamping structure comprises a clamping structure used for fixing the pipe wall of the polyethylene winding solid wall drainage pipe and a sliding structure used for adjusting the clamping structure. According to the mode, the device for testing the tensile strength of the polyethylene winding solid-wall drainage pipe adopts an adjustable clamping structure, and the accuracy of a detection result can be ensured under the condition that a pipe body is not damaged.

Description

Technical Field

[0001] The utility model relates to the field of water pipe detection, in particular to a device for testing the tensile strength of a polyethylene wound solid wall drainage pipe. Background Art

[0002] The wound solid wall drainage pipe is a drainage pipe made of high-performance resin material through a winding process. The pipe wall is a solid structure without partitions or cavities. It is usually connected by socket connection, electric fusion connection or hot melt connection. It has the advantages of good corrosion resistance, high strength, wear resistance, light weight and environmental protection. Due to its excellent performance and low cost, it has been widely used in drainage systems, mainly used in municipal drainage, industrial wastewater discharge, agricultural irrigation and building drainage and other application fields.

[0003] Existing equipment for testing tensile strength usually clamps the two ends of the product to be tested on two clamps for reverse pulling. However, since the wound solid-wall drainage pipe has a hollow structure, if it needs to be clamped tightly during installation, it is easy to damage the pipe body. If it is clamped too loosely, it is easy to slip against the pipe wall during measurement, affecting the test results, which is very inconvenient. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a device for testing the tensile strength of a polyethylene wound solid wall drainage pipe, which can ensure the accuracy of the test result without damaging the pipe body.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: a device for testing the tensile strength of a polyethylene wound solid wall drainage pipe, comprising an upper and lower tensile clamp, the upper and lower tensile clamps are respectively fixed on the upper and lower tensile machines through the mounting grooves on the top, and the upper and lower tensile clamps are respectively connected to the upper and lower ends of the two connected polyethylene wound solid wall drainage pipes through a plurality of adjustable clamping structures;

[0006] The plurality of adjustable clamping structures on the stretching fixture are respectively distributed in a circle center array, and the adjustable clamping structure comprises a clamping structure for fixing the wall of the polyethylene wound solid wall drainage pipe and a sliding structure for adjusting the clamping structure.

[0007] In a preferred embodiment of the utility model, the sliding structure includes a slide groove and two sliders, the two sliders are slidably connected to the slide groove, the sliders cooperate with the slide groove, and the vertical cross-section of the sliders is T-shaped.

[0008] In a preferred embodiment of the present invention, the clamping structure includes two fixing plates, and the two fixing plates are respectively mounted on two sliding blocks of the same adjustable clamping structure.

[0009] In a preferred embodiment of the present invention, the two fixing plates are arc-shaped, and the inner circular parts of the arcs are both oriented toward the center of the stretching fixture.

[0010] In a preferred embodiment of the utility model, a rubber layer is provided on one side of the opposite surfaces of the two fixing plates of the same adjustable clamping structure, and a limiting edge is provided in the middle of the rubber layer.

[0011] In a preferred embodiment of the present invention, a locking bolt is installed between the limiting edge and the stretching clamp, and a locking nut is installed after the locking bolt passes through the two fixing plates in sequence from the outside to the inside.

[0012] The beneficial effects of the utility model are as follows: the utility model is a device for testing the tensile strength of a polyethylene wound solid wall drainage pipe, the device adopts an adjustable clamping structure, and can ensure the accuracy of the test result without damaging the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a cross-sectional view of a device for testing the tensile strength of a polyethylene wound solid wall drainage pipe.

[0014] Figure 2 The present invention is a top view of two fixing plates in the same adjustable clamping structure of a device for testing the tensile strength of polyethylene wound solid wall drainage pipe.

[0015] Figure 3 The figure is a top view of the upper tensile fixture of a device for testing the tensile strength of polyethylene wound solid wall drainage pipe.

[0016] The markings of the components in the attached drawings are as follows: 1. Tensile clamp; 2. Polyethylene wrapped solid wall drainage pipe; 3. Slide groove; 4. Slider; 5. Fixed plate; 6. Rubber layer; 7. Limiting edge; 8. Locking bolt; 9. Locking nut; 10. Installation groove. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0018] See also Figures 1 to 3 A device for testing the tensile strength of a polyethylene wound solid wall drainage pipe 2 comprises an upper and lower tensile clamp 1, wherein the upper and lower tensile clamps 1 are respectively fixed on upper and lower tensile testing machines through mounting grooves 10 at the top, and the upper and lower tensile clamps 1 are respectively connected to the upper and lower ends of the two connected polyethylene wound solid wall drainage pipes 2 through a plurality of adjustable clamping structures, wherein the adjustable clamping structures can ensure the accuracy of the test results without damaging the pipe body.

[0019] The plurality of adjustable clamping structures on the stretching fixture 1 are respectively distributed in a circle-centered array, and the adjustable clamping structure comprises a clamping structure for fixing the wall of the polyethylene-wrapped solid-wall drainage pipe 2 and a sliding structure for adjusting the clamping structure.

[0020] The sliding structure includes a slide groove 3 and two sliders 4. The two sliders 4 are slidably connected to the slide groove 3. The sliders 4 cooperate with the slide groove 3 so that the sliders 4 can slide in the slide groove 3, thereby ensuring smooth sliding and reducing shaking.

[0021] The vertical cross section of the slider 4 is T-shaped, which prevents the slider 4 from escaping from the slide groove 3 .

[0022] The clamping structure includes two fixed plates 5, which are respectively installed on the two sliders 4 of the same adjustable clamping structure. The two fixed plates 5 are arc-shaped, and the inner circle parts of the arcs are both facing the center of the tensile clamp 1. The two fixed plates 5 respectively fix the inner and outer walls of the polyethylene-wrapped solid-wall drainage pipe 2, avoiding the traditional tensile strength testing equipment from using excessive force to clamp the hollow pipe structure and thus damaging the pipe body.

[0023] A rubber layer 6 is provided on the opposite surfaces of the two fixing plates 5 of the same adjustable clamping structure. Due to the different curvatures of tubes of different sizes, the rubber layer 6 can fit the inner and outer walls of the tube well, while avoiding damage to the inner and outer walls of the tube during the clamping process.

[0024] A limiting edge 7 is provided in the middle of the rubber layer 6, and the limiting edge 7 is used to limit the position of the tube body to avoid pressing against the locking bolt 8, thereby affecting its normal adjustment.

[0025] A locking bolt 8 is installed between the limiting edge 7 and the stretching clamp 1. The locking bolt 8 passes through the two fixing plates 5 from the outside to the inside in sequence and then a locking nut 9 is installed. The gap between the two fixing plates 5 is adjusted by the locking bolt 8 to meet the needs of tubes with different thicknesses. Finally, the locking nut 9 is used to lock the two fixing plates 5 so that the tube body is clamped.

[0026] When in use, first adjust the size between the two fixing plates 5 through the locking bolt 8 to make it larger than the thickness of the tube body, respectively install the two tube bodies on the two tensile clamps 1, adjust the locking nut 9 to clamp the tube body, and then connect the two tube bodies until the connection is firm, and respectively connect the upper and lower tensile clamps 1 to the upper and lower tensile machines through the mounting groove 10.

[0027] Compared with the prior art, the utility model discloses a device for testing the tensile strength of a polyethylene wound solid wall drainage pipe. The device adopts an adjustable clamping structure and can ensure the accuracy of the test result without damaging the pipe body.

[0028] In the description of the present invention, it should be noted that the components are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel in this field through technical manuals or through conventional test methods. The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships described in the accompanying drawings, or are the directions or positional relationships in which the box of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for testing the tensile strength of a polyethylene wound solid wall drainage pipe, comprising an upper and lower tensile fixture, wherein the upper and lower tensile fixtures are respectively fixed to the upper and lower tensile testing machines through the mounting grooves at the top, and characterized in that: The upper and lower stretching fixtures are respectively connected to the upper and lower ends of the two connected polyethylene wound solid wall drainage pipes through a plurality of adjustable clamping structures; The plurality of adjustable clamping structures on the stretching fixture are respectively distributed in a circle center array, and the adjustable clamping structure comprises a clamping structure for fixing the wall of the polyethylene wound solid wall drainage pipe and a sliding structure for adjusting the clamping structure.

2. A device for testing the tensile strength of a polyethylene wound solid wall drainage pipe according to claim 1, characterized in that: The sliding structure comprises a sliding groove and two sliding blocks. The two sliding blocks are slidably connected to the sliding groove. The sliding blocks match the sliding groove. The vertical cross section of the sliding blocks is T-shaped.

3. A device for testing the tensile strength of a polyethylene wound solid wall drainage pipe according to claim 2, characterized in that: The clamping structure comprises two fixing plates, and the two fixing plates are respectively mounted on two sliding blocks of the same adjustable clamping structure.

4. A device for testing the tensile strength of a polyethylene wound solid wall drainage pipe according to claim 3, characterized in that: The two fixing plates are arc-shaped, and the inner circular parts of the arcs are both oriented toward the center of the stretching fixture.

5. The device for testing the tensile strength of polyethylene wound solid wall drainage pipe according to claim 3, characterized in that: A rubber layer is provided on one side of the opposite surfaces of the two fixing plates of the same adjustable clamping structure, and a limiting edge is provided in the middle of the rubber layer.

6. A device for testing the tensile strength of a polyethylene wound solid wall drainage pipe according to claim 5, characterized in that: A locking bolt is installed between the limiting edge and the stretching clamp, and a locking nut is installed after the locking bolt passes through the two fixing plates in sequence from the outside to the inside.

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