Ring stiffness internal deformation measuring device
By designing the inner deformation measurement device of ring stiffness and using the combination of tester and sensor, the problem of inner deformation detection of ring stiffness of plastic buried drain pipes is solved, and efficient and accurate detection is achieved, avoiding problems such as waste of materials and excessive costs.
Patent Information
- Application Number
- CN202422229256.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The prior art is difficult to efficiently detect the deformation of the ring stiffness of the plastic buried drain pipe at the same time, resulting in problems such as improper selection that may lead to pipe deformation or material waste.
A ring stiffness inner deformation measurement device is designed, installed on the test machine, through the combination of the upper pressure plate and the lower pressure plate, the inner and outer deformation of the pipe is measured by using a spoke sensor and a pull-line displacement sensor to realize the internal and external double inspection function of pulling and pressing.
Accurate measurement of the internal deformation of the ring stiffness of the plastic buried drain pipe is achieved, which improves detection efficiency and accuracy and reduces material costs.
Smart Images
Figure CN223065012U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ring stiffness measurement, and particularly relates to a ring stiffness internal deformation measurement device. Background Art
[0002] The internal deformation of the ring stiffness is a comprehensive parameter for the external pressure load resistance of plastic buried drainage pipes. In order to ensure the safe operation of plastic buried drainage pipes under external pressure loads, the selection of the ring stiffness is one of the keys in the design.
[0003] If the ring stiffness of the pipe is too small, the pipe may undergo excessive deformation or buckling instability failure. On the contrary, if the ring stiffness is selected too high, an excessively large cross-sectional moment of inertia must be adopted, which will cause problems such as too much material used and too high cost. Therefore, we have developed a ring stiffness internal deformation detection device to solve this problem. Content of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a ring stiffness internal deformation measurement device, which realizes the dual functions of internal and external detection for both tension and compression.
[0005] The utility model is realized by the following technical solutions:
[0006] Provide a ring stiffness internal deformation measurement device, which is installed between the moving crossbeam and the workbench of a testing machine, and includes an upper pressing plate and a lower pressing plate. The upper pressing plate is installed under the moving crossbeam through a wheel spoke sensor. Two screws are vertically rotatably installed at both ends of the upper pressing plate, and a cross bar is threadedly connected between the two screws; the lower pressing plate is installed on the workbench through a small pressing plate. A guide shaft is vertically arranged on one side of the lower pressing plate, and an adjustable locking slider is slidably connected on the guide shaft. A support column seat parallel to the lower pressing plate is connected to the locking slider, and a wire displacement sensor is installed on the support column seat. The end of the wire rope of the wire displacement sensor is vertically connected to the cross bar.
[0007] Furthermore, the wheel spoke sensor is installed on the lower surface of the moving crossbeam, and the connecting disc of the wheel spoke sensor is connected to the center of the upper surface of the upper pressing plate.
[0008] The wheel spoke sensor is connected to the center of the upper pressing plate through the connecting disc, which can conveniently read the pressure value and tension value of the upper pressing plate on the test pipe sample for ring stiffness calculation.
[0009] Furthermore, fixing grooves for cooperating with tools to rotate the screws are symmetrically formed under the upper pressing plate at the upper ends of the screws.
[0010] The upper ends of the screws can be cooperated with tools through the symmetrically formed fixing grooves to conveniently and quickly rotate the screws to adjust the position of the cross bar.
[0011] Advantages of the Utility Model:
[0012] By using an electronic universal testing machine, pipe testing items such as ring stiffness, internal deformation, flattening, and tensile can be carried out. It has low noise and high efficiency, and has a wide speed regulation range.
[0013] The utility model positions the test pipe sample through the designed cross bar and support seat. By driving the upper pressure plate to move up and down with the moving cross beam, the functions of dual-purpose internal and external double inspection for pulling and pressing can be realized, and the ring stiffness internal deformation data of the test pipe sample can be accurately measured. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure installed for the utility model.
[0015] Figure 2 It is a partial enlarged view of the utility model.
[0016] Figure 3 It is a schematic diagram of the structure of the upper pressure plate in the utility model.
[0017] As shown in the figure:
[0018] 1. Testing machine, 2. Moving cross beam, 3. Spoke sensor, 4. Upper pressure plate, 5. Lower pressure plate, 6. Wire displacement sensor, 7. Test pipe sample, 8. Support seat, 9. Cross bar, 10. Connection plate, 11. Screw, 12. Guide shaft, 13. Locking slider, 14. Small pressure plate, 15. Wire rope, 16. Workbench, 17. Fixed groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] To clearly illustrate the technical features of this solution, the following elaborates on this solution through specific embodiments.
[0020] As Figure 1 and Figure 2 shown, a ring stiffness internal deformation measuring device is installed between the moving cross beam 2 of the testing machine 1 and the workbench 16, and includes an upper pressure plate 4 and a lower pressure plate 5. The upper pressure plate 4 is installed below the moving cross beam 2 through a spoke sensor 3. The spoke sensor 3 is installed on the lower surface of the moving cross beam 2, and the connection plate 10 of the spoke sensor 3 is connected to the center of the upper surface of the upper pressure plate 4. Two screws 11 are respectively vertically rotatably installed at both ends of the upper pressure plate 4, and a cross bar 9 is threadedly connected between the two screws 11. Fixing grooves 17 for cooperating with tools to rotate the screws 11 are symmetrically formed below the upper ends of the screws 11 on the lower side of the upper pressure plate 4. As Figure 3 shown, the screws 11 can be rotated by clamping the fixing grooves 17 with tools. Through the thread action, the up and down positions of the cross bar 9 on the two screws 11 can be adjusted, so that the cross bar 9 can support the upper end inside the test pipe sample 7.
[0021] The lower pressing plate 5 is installed on the workbench 16 through the small pressing plate 14. A guiding shaft 12 is vertically arranged on one side of the lower pressing plate 5, and an adjustable locking slider 13 is slidably connected to the guiding shaft 12. A support seat 8 parallel to the lower pressing plate 5 is connected to the locking slider 13. A wire-pulling displacement sensor 6 is installed on the support seat 8, and the end of the wire rope 15 of the wire-pulling displacement sensor 6 is perpendicularly connected to the cross bar 9.
[0022] When the utility model is in use, select the microcomputer-controlled testing machine 1, turn on the machine and adjust the moving cross beam 2 to a suitable position. Place the sample pipe 7 between the upper pressing plate 4 and the lower pressing plate 5, and then insert the cross bar 9 and the support seat 8 used for upper and lower measurement into the sample pipe 7 respectively. Utilize the movement of the locking slider 13 on the guiding shaft 12 to first adjust the position of the support seat 8 so that the support seat 8 clamps the lower end of the sample pipe 7. The locking slider 13 can slide up and down on the guiding shaft 12 and has a self-locking function, which can achieve self-locking after the position is determined to prevent the locking slider 13 from displacing. Then, rotate the screw 11 by using a tool to adjust the position of the cross bar 9 so that the cross bar 9 just contacts the upper end of the sample pipe 7.
[0023] After adjustment, zero the wire-pulling displacement sensor 6, and then control the moving cross beam 2 to move downward, driving the upper pressing plate 4 to press down on the sample pipe 7 to apply pressure. The inner diameter of the sample pipe 7 changes under pressure. The wheel spoke sensor 3 transmits the obtained pressure value, and at the same time, the wire-pulling displacement sensor 6 obtains the displacement amount to measure the inner diameter change value, and calculates using the average value of multiple groups of recorded data.
[0024] Then control the moving cross beam 2 to move upward. The cross bar 9 on the upper pressing plate 4 will apply a pulling force to the inner wall of the sample pipe 7. The inner wall of the sample pipe 7 continuously undergoes displacement deformation. The pressure value obtained from the wheel spoke sensor 3 and the displacement amount obtained from the wire-pulling displacement sensor 6 are used to obtain the inner deformation data of the ring stiffness of the sample pipe 7.
[0025] Certainly, the above description is not limited to the above examples. The technical features not described in the utility model can be realized by or adopted from the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solution of the utility model and are not a limitation to the utility model. The utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essence of the utility model do not depart from the purpose of the utility model and should also fall within the protection scope of the claims of the utility model.
Claims
1. A ring stiffness internal deformation measuring device is installed between the moving crossbeam and the workbench of a testing machine, and is characterized in that: It includes an upper platen and a lower platen. The upper platen is installed below the moving crossbeam through a spoke sensor. Two screws are vertically rotatably installed at both ends of the upper platen. A crossbar is threadedly connected between the two screws. The lower platen is installed on the workbench through a small platen. A guide shaft is vertically arranged on one side of the lower platen, and an adjustable locking slider is slidably connected to the guide shaft. A support column seat parallel to the lower platen is connected to the locking slider. A wire displacement sensor is installed on the support column seat, and the end of the wire rope of the wire displacement sensor is vertically connected to the crossbar.
2. The ring stiffness internal deformation measuring device according to claim 1, wherein: The spoke sensor is installed on the lower surface of the moving crossbeam, and the connecting plate of the spoke sensor is connected to the center of the upper surface of the upper platen.
3. The ring stiffness inner deformation measuring device according to claim 1, wherein: Fixed grooves for cooperating with tools to rotate the screws are symmetrically formed below the upper platen at the upper ends of the screws.