Magnetic grid flexible inclinometer
By designing a magnetic grating flexible inclinometer, which employs a ball joint connection and a magnetic grating angular displacement sensor, the problems of reliance on imported high-precision accelerometers and environmental influences in flexible inclinometers have been solved, thus achieving high-precision measurement and improved equipment reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI KAIRUNDA PRECISION INSTR CO LTD
- Filing Date
- 2025-06-07
- Publication Date
- 2026-04-10
AI Technical Summary
The high-precision accelerometers in existing flexible inclinometers rely on imports, and their measurement accuracy is greatly affected by temperature changes and vibrations in engineering applications, resulting in insufficient durability and stability.
The magnetic grating flexible inclinometer is adopted, including a sleeve assembly, inclinometer base, conduit, guide wheel and connecting tube. It uses ball joint connection to provide flexible deformation, and combines a weighted pendulum and a magnetic grating angular displacement sensor to avoid dependence on imported accelerometers and improve the reliability and durability of the equipment.
It ensures high measurement accuracy and strong environmental adaptability, eliminates the dependence on imported high-precision accelerometers, improves the reliability and durability of the equipment, and overcomes the defects caused by temperature and vibration.
Smart Images
Figure CN224108819U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to flexible inclinometer technical field, concretely is magnetic grid flexible inclinometer. BACKGROUND
[0002] Flexible inclinometer as one of important sensors, install in dam body inside, through the angle change of the included angle between the axis and plumb line, calculate the three-dimensional Euler angle of measured soil at different elevations. The core component high precision accelerometer in current flexible inclinometer mainly relies on import, and the accelerometer has the problems of great influence on measurement accuracy by temperature change and vibration in engineering application, and insufficient durability and stability in harsh environment. SUMMARY
[0003] The utility model discloses a magnetic grid flexible inclinometer to solve the problems of the core component high precision accelerometer in current flexible inclinometer mainly relying on import, and the accelerometer having great influence on measurement accuracy by temperature change and vibration in engineering application, and insufficient durability and stability in harsh environment.
[0004] Magnetic grid flexible inclinometer, comprising:
[0005] Sleeve assembly;
[0006] Inclinometer seat, the inclinometer seat is installed inside sleeve assembly, the inclinometer seat upper end left side and lower end front side are equipped with chamber, the chamber one side is covered with the chamber cover that is connected with inclinometer seat screw, the chamber inside is connected with pendulum through bearing, the pendulum surface is fixed with the annular magnetic grid ruler that its center of circle coincides with bearing center, the annular magnetic grid ruler periphery is equipped with magnetic head assembly opposite, the magnetic head assembly is fixed on inclinometer seat;
[0007] Threading pipe, the threading pipe fixedly connected in sleeve assembly lower end;
[0008] Guide pulley, the guide pulley is installed outside sleeve assembly;
[0009] Connecting pipe, the connecting pipe lower end movably sheathed in sleeve assembly upper end and forms spherical hinge structure.
[0010] Preferably, the sleeve assembly includes sleeve pipe, sleeve, sleeve bottom cover and ball head, and the guide pulley is connected outside the sleeve pipe by screws.
[0011] Preferably, the sleeve is fixed and communicated at the lower end of the sleeve pipe, the sleeve is sleeved outside the inclinometer seat, the sleeve bottom cover is fixed at the lower end of the sleeve, the upper part of the sleeve bottom cover is fixed with the lower part of the inclinometer seat, and the lower part of the sleeve bottom cover is fixed with the threading pipe.
[0012] Preferably, the ball head is fixed on the upper end of the sleeve, a channel is arranged in the center of the ball head, the channel is communicated with the sleeve, and the connecting pipe is movably sleeved outside the ball head to form a ball hinge connection structure.
[0013] Preferably, the chambers are communicated.
[0014] Preferably, the threading pipe is communicated with the sleeve through the chamber.
[0015] Preferably, an internal thread is arranged in the upper end of the connecting pipe, an external thread is arranged on the outer wall of the lower end of the threading pipe, and the internal thread and the external thread are used for connecting between adjacent segments.
[0016] Beneficial effects: the magnetic grid flexible inclinometer has simple and reliable structure, provides flexible deformation adaptability through the ball hinge connection, and has determined length, so that the accuracy of conversion of the inclination angle to the horizontal displacement is ensured, the cable is fully enclosed in the inclinometer and is not easy to be damaged, the reliability and durability of the equipment are improved, the inclination angle is measured through the heavy pendulum hammer and the magnetic grid angle displacement sensor, the dependence on the imported high-precision accelerometer is eliminated, and the defects that the inclination angle measured by the gravity accelerometer is easily affected by temperature change and vibration are overcome, so that the magnetic grid flexible inclinometer has the characteristics of strong environmental adaptability, high measurement precision and stable measurement value. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is a whole schematic view of the utility model;
[0018] Fig. 2 It is a sectional view of the inclinometer seat of the utility model;
[0019] Fig. 3 It is a whole explosion view of the utility model.
[0020] In the drawing: 1-sleeve assembly, 11-sleeve, 12-sleeve, 13-sleeve bottom cover, 14-ball head, 2-guide wheel, 3-threading pipe, 4-connecting pipe, 5-inclinometer seat, 51-chamber, 52-chamber cover, 53-pendulum hammer, 54-annular magnetic grid ruler, 55-magnetic head assembly. DETAILED DESCRIPTION
[0021] Please refer to Figs. 1-3 , the magnetic grid flexible inclinometer comprises:
[0022] The sleeve assembly 1 comprises a sleeve 11, a sleeve 12, a sleeve bottom cover 13 and a ball head 14, the sleeve 12 is fixed and communicated at the lower end of the sleeve 11, the ball head 14 is fixed on the upper end of the sleeve 11, a channel is arranged in the center of the ball head 14, and the channel is communicated with the sleeve 11;
[0023] A clinometer seat 5 is installed inside a sleeve assembly 1. A sleeve 12 is fitted over the clinometer seat 5. A sleeve bottom cover 13 is fixed to the lower end of the sleeve 12. The upper part of the sleeve bottom cover 13 is fixed to the lower part of the clinometer seat 5. The clinometer seat 5 has chambers 51 on its upper left side and lower front side, which are interconnected. One side of each chamber 51 is covered with a cover 52 screwed to the clinometer seat 5. A pendulum 53 is connected to the inside of each chamber 51 via a bearing. An annular magnetic scale 54, whose center coincides with the bearing center, is fixed to the surface of the pendulum 53. A magnetic head assembly 55 is positioned opposite the outer periphery of the annular magnetic scale 54 and is fixed to the clinometer seat 5. By arranging one pendulum 53 in each of the upper and lower chambers 51, and connecting the pendulum 53 to the clinometer seat 5 via bearings, the rotation axes of the two pendulums 53 are perpendicular to each other. Thus, when the clinometer seat 5... When tilted to the left or right, the lower pendulum 53 remains vertically downward under the influence of gravity through the bearing, and deflects by an equal angle from the center line of the base 5. When the inclinometer 5 tilts forward or backward, the upper pendulum 53 remains vertically downward under the influence of gravity through the bearing, and deflects by an equal angle from the center line of the inclinometer 5. Because the annular magnetic scale 54 is fixed on the pendulum 53, and its central axis coincides with the center of rotation of the pendulum 53, the annular magnetic scale 54 also remains unchanged. The magnetic head assembly 55 consists of a magnetic head embedded in a detection circuit board, which is fixed on the inclinometer 5. The magnetic head is close to and directly faces the outer periphery of the annular magnetic scale 54. When the inclinometer 5 tilts, the position of the annular magnetic scale 54 directly facing the magnetic head deflects by an equal angle. In this way, the angle is measured by detecting the magnetic signal on the annular magnetic scale 54 through the magnetic head.
[0024] The conduit 3 is fixedly connected to the lower end of the sleeve assembly 1. The lower part of the sleeve bottom cover 13 is fixed to the conduit 3. The inner cavity of the conduit 3 is connected to the inner cavity of the sleeve 11 through the chamber 51. The outer wall of the lower end of the conduit 3 is provided with external threads.
[0025] Guide wheel 2 is installed outside the sleeve assembly 1. The guide wheel 2 is connected to the outside of the sleeve 11 by screws. The guide wheel 2 is set in conjunction with the guide groove of the inclinometer tube to limit the installation direction of the magnetic grating flexible inclinometer.
[0026] A connecting pipe 4 is movably sleeved on the upper end of the sleeve assembly 1 and forms a spherical hinge structure, the connecting pipe 4 is movably sleeved outside the ball head 14 to form a spherical hinge connecting structure, the upper end of the connecting pipe 4 is internally provided with an internal thread, and the internal thread and an external thread of the lower end of the threading pipe 3 are used for connecting between adjacent segments, so that through cooperation of the connecting pipe 4 and the threading pipe 3, adjacent inclinometers are fixedly connected, between the magnetic grid flexible inclinometers, the upper end of the connecting pipe 4 of one magnetic grid flexible inclinometer is threadedly connected with the lower end of the threading pipe 3 of another magnetic grid flexible inclinometer, and a cable line can pass through the connecting pipe 4, the sleeve assembly 1, the cavity 51 and the threading pipe 3 in sequence, and wiring is facilitated.
[0027] Working principle: when the magnetic grid flexible inclinometer is inclined at an angle from the vertical state, the pendulum 53 always maintains the vertical downward state (relative to the vertical) under the action of gravity, and the annular magnetic grid ruler 54 does not rotate (relative to the vertical) because it is fixed with the pendulum 53, and the magnetic head is synchronously inclined with the magnetic grid flexible inclinometer, resulting in that the position of the annular magnetic grid ruler 54 opposite to the magnetic head is offset by an equivalent angle, and the offset angle is detected by the magnetic head, so that the displacement amount in the horizontal direction can be calculated according to the length of the magnetic grid flexible inclinometer and the change amount of the included angle.
Claims
1. A magnetic grid flexible inclinometer characterized in that, Include: Sleeve assembly (1); Inclinometer seat (5) is installed inside the sleeve assembly (1), the upper left side and the lower front side of the inclinometer seat (5) are provided with cavities (51), one side of the cavity (51) is covered with a cavity cover (52) which is screwed with the inclinometer seat (5), the inside of the cavity (51) is connected with a pendulum (53) through a bearing, the surface of the pendulum (53) is fixed with a ring-shaped magnetic scale (54) whose center coincides with the center of the bearing, the outer periphery of the ring-shaped magnetic scale (54) is provided with a magnetic head assembly (55) opposite, the magnetic head assembly (55) is fixed on the inclinometer seat (5); The threading pipe (3) is fixedly connected to the lower end of the sleeve assembly (1); The guide wheel (2) is installed outside the sleeve assembly (1); The connecting pipe (4) is movably sleeved on the upper end of the sleeve assembly (1) and forms a spherical hinge structure.
2. The magnetic drag flexible inclinometer according to claim 1, characterized in that: The sleeve assembly (1) includes a sleeve pipe (11), a sleeve (12), a sleeve bottom cover (13) and a ball head (14), the guide wheel (2) is connected outside the sleeve pipe (11) by screws.
3. The magnetic drag flexible inclinometer according to claim 2, characterized in that: The sleeve (12) is fixed and communicated at the lower end of the sleeve pipe (11), the sleeve (12) is sleeved outside the inclinometer seat (5), the sleeve bottom cover (13) is fixed at the lower end of the sleeve (12), the upper part of the sleeve bottom cover (13) is fixed with the lower part of the inclinometer seat (5), and the lower part of the sleeve bottom cover (13) is fixed with the threading pipe (3).
4. The magnetic drag flexible inclinometer according to claim 3, characterized in that: The ball head (14) is fixed at the upper end of the sleeve pipe (11), the center of the ball head (14) is provided with a passage, the passage is communicated with the sleeve pipe (11), and the connecting pipe (4) is movably sleeved outside the ball head (14) to form a spherical hinge connection structure.
5. The magnetic drag flexible inclinometer according to claim 4, characterized in that: The cavities (51) are communicated.
6. The magnetic drag flexible inclinometer according to claim 5, characterized in that: The threading pipe (3) is communicated with the sleeve pipe (11) through the cavity (51).
7. The magnetic drag flexible inclinometer according to claim 1, characterized in that: The inner thread is arranged in the upper end of the connecting pipe (4), the outer thread is arranged on the outer wall of the lower end of the threading pipe (3), and the inner thread and the outer thread are used for connecting adjacent segments.