A double-wall corrugated pipe circumferential bending stiffness detection device

Abstract

The utility model relates to bellows rigidity detection device technical field, especially a double -walled bellows annular bending rigidity detection equipment, its characterized in that the bottom plate upper end is fixedly connected with two support bars, each support bar upper end is fixedly connected with V type fork respectively, the bottom plate is provided with two groups of drive assemblies, each group drive assembly is driven to have the vertical shift pole respectively, each vertical shift pole is fixedly connected with V type card respectively, V type card and V type fork one -to -one corresponding cooperation, the bottom plate upper end is fixedly connected with the support bar, the support bar is fixedly connected with hydraulic telescopic rod, the telescopic end coaxially fixed connection of hydraulic telescopic rod has extruded plate, the middle part of extruded plate lower end is embedded with pressure sensor.

Description

Technical Field

[0001] This utility model relates to the technical field of corrugated pipe stiffness testing devices, and in particular to a device for testing the circumferential bending stiffness of a double-walled corrugated pipe. Background Technology

[0002] Double-wall corrugated pipe, also known as high-density polyethylene double-wall corrugated pipe or HDPE pipe, is a new type of lightweight pipe with a ring-shaped outer wall and a smooth inner wall. It is a flexible pipe. It is mainly used for water supply, drainage, sewage discharge, ventilation, subway ventilation, mine ventilation, and farmland irrigation. The material of polyethylene double-wall corrugated pipe is very strong, durable, and stable. Compared with other pipe materials, this type of double-wall corrugated pipe is less prone to cracking. Moreover, compared with concrete pipes and cast iron pipes, polyethylene double-wall corrugated pipe has a lower purchase cost and is less complicated to install, with a very simple construction process.

[0003] In the production process of double-wall corrugated pipes, in order to ensure that the quality of the finished product meets customer requirements, it is necessary to perform stiffness testing. Among them, circumferential stiffness testing of double-wall corrugated pipes, that is, testing the stiffness of the double walls in the circumferential direction, is an important testing item. However, in the current testing, the fixtures used can generally only be fixed for double-wall corrugated pipes of a specific diameter. If other diameter pipes are to be tested, it is necessary to disassemble and replace the relevant parts of the fixture, or to prepare multiple testing devices of different specifications. These are not conducive to testing efficiency and production costs. In view of this, this application proposes a double-wall corrugated pipe circumferential bending stiffness testing device. Utility Model Content

[0004] To address the above situation and overcome the shortcomings of existing technologies, this utility model provides a double-walled corrugated pipe circumferential bending stiffness testing device. The technical solution it provides includes a base plate, characterized in that two support rods are fixedly connected to the upper end of the base plate, and a V-shaped fork is fixedly connected to the upper end of each support rod. Two sets of driving components are provided on the base plate, each set of driving components drives a vertical moving rod, and a V-shaped clip is fixedly connected to each vertical moving rod. The V-shaped clips and V-shaped forks are correspondingly matched. A support rod is fixedly connected to the upper end of the base plate, and a hydraulic telescopic rod is fixedly connected to the support rod. A pressing plate is coaxially fixedly connected to the telescopic end of the hydraulic telescopic rod, and a pressure sensor is embedded in the middle of the lower end of the pressing plate. Each drive assembly includes two vertical rods fixedly connected to the base plate. The upper ends of the two vertical rods are fixedly connected to a mounting rod. The mounting rod and the base plate are rotatably connected to a lead screw. The lead screw is located between the two vertical rods. The lead screw is threadedly connected to a lifting bracket fixedly connected to a vertical moving rod. The lifting bracket is fixedly connected to two sliding sleeves that correspond one-to-one with the vertical rods and are in sliding cooperation.

[0005] Preferably, each of the lead screws is coaxially fixedly connected to a drive handwheel at its upper end.

[0006] Preferably, the lifting bracket is fixedly connected with a threaded sleeve that mates with the lead screw thread.

[0007] Preferably, the two V-shaped forks are arranged symmetrically about the hydraulic telescopic rod.

[0008] The beneficial effects of this utility model are: In use, the double-walled corrugated pipe to be tested for stiffness is placed on two V-shaped forks. Due to the specific structure of the V-shape, corrugated pipes of different diameters can be placed. Then, the drive assembly is activated to move the lifting bracket and the vertical moving rod downwards together. The V-shaped clips fixedly connected to the vertical moving rod will move downwards synchronously, and the V-shaped clips can be embedded in the upper edge of the corrugated pipe. Thus, with the cooperation of the V-shaped clips and the V-shaped forks, double-walled corrugated pipes of different diameters can be fixed, so that the circumferential stiffness can be tested by the extrusion plate. The present application has a simple structure, is easy to use, and has strong practicality. Attached Figure Description

[0009] Figure 1 This is a perspective view of the present invention in conjunction with a double-walled corrugated pipe.

[0010] Figure 2 This is a first-person perspective stereoscopic view of the present invention.

[0011] Figure 3 This is a partial stereoscopic view of the present invention from a second perspective.

[0012] Figure Labels 1. Base plate, 2. Support rod, 3. V-shaped fork, 4. Drive assembly, 5. Vertical moving rod, 6. V-shaped clip, 7. Support rod, 8. Hydraulic telescopic rod, 9. Extrusion plate, 10. Pressure sensor, 11. Vertical rod, 12. Mounting rod, 13. Lead screw, 14. Lifting bracket, 15. Sliding sleeve, 16. Drive handwheel, 17. Screw sleeve, 18. Double-wall corrugated pipe. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be described in further detail.

[0014] In the first embodiment, the technical solution is as follows: When in use, the upper end of the lead screw 13 is provided with a drive handwheel 16. The lead screw 13 can be easily rotated by the drive handwheel 16 to place the double-walled corrugated pipe 18 whose stiffness is to be tested on the two V-shaped forks 3. Since the specific structure of the V-shape can be used to place corrugated pipes of different diameters, the drive assembly 4 is then started, and the lead screw 13 can drive the lifting bracket 14 and the vertical moving rod 5 to move downward together. The V-shaped clip 6, which is fixedly connected to the vertical moving rod 5, will move downward synchronously, and the V-shaped clip 6 can be embedded in the upper edge of the corrugated pipe. Under the cooperation of the V-shaped clip 6 and the V-shaped fork 3, the double-walled corrugated pipes 18 of different diameters can be fixed so that the stiffness of the pipe can be tested in the circumferential direction by the extrusion plate 9. The present application has a simple structure, is easy to use, and has strong practicality.

[0015] In Example 2, based on Example 1, specifically, in use, due to the specific structure of the V-shaped clip 6 and the V-shaped fork 3, the two can be used together to fix double-wall corrugated pipes 18 of different diameters. Specifically, when fixing the double-wall corrugated pipe 18, first place the double-wall corrugated pipe 18 on the two V-shaped forks 3, and then rotate the screw 13 on the mounting rod 12 clockwise. To facilitate the rotation of the screw 13, a drive handwheel 16 is provided. The clockwise rotation of the screw 13 will act on the lifting bracket 14, which is threadedly engaged with it, through the screw sleeve 17. Since the lifting bracket 14 is also slidably connected to the vertical rod 11 through the sliding sleeve 15, the clockwise rotation of the screw 13 will drive the lifting bracket 14 to move downward along the vertical rod 11. Then, the vertical moving rod 5, which is fixedly connected to the lifting rod, and the V-shaped clip 6, which is fixedly connected to the vertical moving rod 5, will move downward synchronously. Thus, the V-shaped clip 6 can clamp onto the upper edge of the double-wall corrugated pipe 18, and together with the V-shaped fork 3, the double-wall corrugated pipe 18 can be fixed. Correspondingly, rotating the lead screw 13 counterclockwise can drive the lifting rod to move upward, and then the lifting bracket 14 together with the V-shaped clip 6 will move upward synchronously, thereby releasing the fixation on the double walls.

[0016] After the double-wall corrugated pipe 18 is fixed, the hydraulic telescopic rod 8 on the support rod 72 can be activated to extend downwards. The hydraulic telescopic rod 8 will then drive the extrusion plate 9 to move downwards and press against the upper edge of the double-wall corrugated pipe 18. With the continuous pressure of the hydraulic telescopic rod 8, the endurance of the double-wall corrugated pipe 18, i.e., its circumferential stiffness, can be tested. The pressure sensor 10 at the lower end of the extrusion plate 9 will also act directly on the upper part of the double-wall corrugated pipe 18. Thus, the pressure on the double-wall corrugated pipe 18 can be monitored in real time through the pressure sensor 10, thereby determining its circumferential stiffness.

Claims

1. A device for testing the circumferential bending stiffness of a double-walled corrugated pipe, comprising a base plate (1), characterized in that, Two support rods (72) are fixedly connected to the upper end of the base plate (1). V-shaped forks (3) are fixedly connected to the upper end of each support rod (72). Two sets of drive components (4) are provided on the base plate (1). Each set of drive components (4) drives a vertical moving rod (5). V-shaped clips (6) are fixedly connected to each vertical moving rod (5). The V-shaped clips (6) and V-shaped forks (3) are matched one-to-one. Support rods (72) are fixedly connected to the upper end of the base plate (1). Hydraulic telescopic rods (8) are fixedly connected to the support rods (72). A pressing plate (9) is fixedly connected to the telescopic end of the hydraulic telescopic rod (8). A pressure sensor (10) is embedded in the middle of the lower end of the pressing plate (9). Each drive assembly (4) includes two vertical rods (11) fixedly connected to the base plate (1). The upper ends of the two vertical rods (11) are fixedly connected to an installation rod (12). The installation rod (12) and the base plate (1) are rotatably connected to a lead screw (13). The lead screw (13) is located between the two vertical rods (11). The lead screw (13) is threadedly connected to a lifting bracket (14) fixedly connected to a vertical moving rod (5). The lifting bracket (14) is fixedly connected to two sliding sleeves (15) that correspond one-to-one with the vertical rods (11) and are in sliding cooperation.

2. The double-walled corrugated pipe circumferential bending stiffness testing device according to claim 1, characterized in that, Each of the lead screws (13) has a drive handwheel (16) fixedly connected to its upper end on the same axis.

3. The double-walled corrugated pipe circumferential bending stiffness testing device according to claim 1, characterized in that, The lifting bracket (14) is fixedly connected to a screw sleeve (17) that is threadedly engaged with the lead screw (13).

4. The double-walled corrugated pipe circumferential bending stiffness testing device according to claim 1, characterized in that, The two V-shaped forks (3) are arranged symmetrically about the hydraulic telescopic rod (8).

Images