Single-axis modal acceleration sensor
By designing an auxiliary clamping structure and adopting a piezoelectric ceramic shear structure in a single-axis modal acceleration sensor, the equipment loosening problem is solved, the suitability and stability are improved, and the frequency response performance is improved.
Patent Information
- Application Number
- CN202420967607.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-05-07
AI Technical Summary
Existing single-axis modal acceleration sensors are prone to loosening after long-term use, which affects the normal use of the equipment and has poor applicability.
By designing structures such as mounting plates, mounting frames, screws, mobile plates, connecting rods, clamping plates, sliders, sliders, balls and rotating blocks, auxiliary clamping of the equipment is achieved, combined with piezoelectric ceramics as sensitive components. The core adopts a triangular shear structure to enhance stability and frequency response performance.
Effectively prevent the equipment from loosening after long-term use, improve the applicability of the device, and improve the tolerance to base bending and thermal transients through the stability and shear structure design of piezoelectric ceramics, and has low base strain. Sensitivity, high resonance frequency and excellent output stability.
Smart Images
Figure CN222145039U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of acceleration sensors, and in particular to a single-axis modal acceleration sensor. Background Art
[0002] A uniaxial modal accelerometer is a sensor used to measure acceleration in a specific direction. It is often used in engineering, structural monitoring, vibration analysis, and other fields to detect changes in acceleration of an object in a specific direction. This sensor can help engineers and researchers understand the vibration characteristics of structures, monitor the operating status of equipment, and perform vibration analysis.
[0003] At present, the existing single-axis modal acceleration sensors are generally installed by means of threads. After long-term use, the single-axis modal acceleration sensors are prone to damage, which affects the normal use of the equipment and has poor applicability. Utility Model Content
[0004] The purpose of the present application is to provide a single-axis modal acceleration sensor, which solves the problems raised in the background technology.
[0005] An embodiment of the present application provides a uniaxial modal acceleration sensor, comprising a base, a shell connected to the base, a connector installed on the upper end of the shell, a mounting plate connected to the lower end of the base, a mounting hole opened at the lower end of the mounting plate, two mounting frames symmetrically connected to the upper end of the mounting plate with respect to the base, a screw rod rotatably connected to the side wall of the mounting frame, a movable plate threadedly connected to the rod wall of the screw rod, connecting rods are connected to the side walls of the two movable plates on opposite sides, a clamping plate is installed on the other end of the connecting rod, and the two clamping plates are symmetrically arranged with respect to the mounting hole.
[0006] By adopting the above technical solution, when in use, the installation is carried out through the mounting holes on the mounting plate, and then the screw rod is rotated. The rotation of the screw rod will exert a force on the movable plate through the action of the thread, and the movable plate will move horizontally under the force. The movement of the movable plate will drive the connecting rod to move, and the movement of the connecting rod will drive the clamping plate to move. When the clamping plate contacts the mounting part, the clamping plate will clamp the mounting part. The above structure can be used to assist in clamping the installation position of the equipment to prevent the equipment from loosening after long-term use, thereby improving the applicability of the device.
[0007] Optionally, a piezoelectric ceramic crystal is installed in the shell, a core is installed on the piezoelectric ceramic crystal, and the core adopts a triangular shear structure design, and an integrated conditioning circuit is installed in the shell.
[0008] By adopting the above technical solution, piezoelectric ceramics are used as sensitive elements, the core adopts a shear structure design that is very stable, and is almost insensitive to environmental inputs such as base bending and thermal transients, with low base strain sensitivity, high resonant frequency and excellent output stability. Extremely excellent frequency response performance.
[0009] Optionally, a slide groove is provided on the inner side wall of the mounting frame, a slider is slidably connected in the slide groove, and the lower end of the slider is connected to the movable plate.
[0010] By adopting the above technical solution, the movable plate is limited to prevent the movable plate from rotating.
[0011] Optionally, a sliding rod is fixedly connected to the inner groove wall of the sliding groove, the sliding rod passes through the sliding block, and the sliding block is slidably connected to the sliding rod.
[0012] By adopting the above technical solution, the sliding block is prevented from being separated from the sliding groove.
[0013] Optionally, a rolling groove is opened at the upper end of the sliding block, a rolling ball is arranged in the rolling groove, the ball passes through the notch of the rolling groove, and the ball is rollingly connected to the bottom of the sliding groove.
[0014] By adopting the above technical solution, the friction between the slider and the slide groove is reduced.
[0015] Optionally, one end of the screw rod is connected to a rotating block.
[0016] By adopting the above technical solution, it is convenient for workers to rotate the screw rod.
[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0018] (1) The technical solution of the present application can assist in clamping the installation position of the device by arranging the mutual coordination between the structures such as the mounting plate, mounting frame, screw, movable plate, connecting rod, clamping plate, slider, slide rod, ball bearing and rotating block, so as to prevent the device from loosening after long-term use, thereby improving the applicability of the device.
[0019] (2) The technical solution of this application adopts piezoelectric ceramics as sensitive elements by setting structures such as a base, a housing, a piezoelectric ceramic crystal, a core, an integrated conditioning circuit and a connector. The core adopts a shear structure design and is very stable. It is almost insensitive to environmental inputs such as base bending and thermal transients, and has low base strain sensitivity, high resonant frequency and excellent output stability. It has extremely excellent frequency response performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0021] Figure 1 This is a schematic diagram of the overall structure of a single-axis modal acceleration sensor of the present application;
[0022] Figure 2 This is a schematic diagram of a slider structure in a single-axis modal acceleration sensor of the present application;
[0023] Figure 3 This is a schematic diagram of the internal structure of a shell in a single-axis modal acceleration sensor of the present application.
[0024] In the figure: 1. base; 2. shell; 3. piezoelectric ceramic crystal; 4. core; 5. integrated conditioning circuit; 6. connector; 7. mounting plate; 8. mounting frame; 9. screw; 10. moving plate; 11. connecting rod; 12. clamping plate; 13. slider; 14. slide rod; 15. ball bearing; 16. rotating block. DETAILED DESCRIPTION
[0025] See also Figure 1-3 The present application provides a technical solution: a uniaxial modal acceleration sensor, comprising a base 1, a shell 2 is connected to the base 1, a connector 6 is installed on the upper end of the shell 2, a mounting plate 7 is connected to the lower end of the base 1, a mounting hole is opened at the lower end of the mounting plate 7, two mounting frames 8 are symmetrically connected to the upper end of the mounting plate 7 about the base 1, a screw rod 9 is rotatably connected to the side wall of the mounting frame 8, a movable plate 10 is threadedly connected to the rod wall of the screw rod 9, connecting rods 11 are connected to the side walls of the two movable plates 10 on the opposite sides, a clamping plate 12 is installed on the other end of the connecting rod 11, and the two clamping plates 12 are symmetrically arranged about the mounting hole.
[0026] In the technical solution of the present application, when in use, the installation is carried out through the mounting holes on the mounting plate 7, and then the screw rod 9 is rotated. The rotation of the screw rod 9 will apply a force to the movable plate 10 through the action of the thread. The movable plate 10 will move horizontally under the force, and the movement of the movable plate 10 will drive the connecting rod 11 to move, and the movement of the connecting rod 11 will drive the clamping plate 12 to move. When the clamping plate 12 contacts the mounting part, the clamping plate 12 will clamp the mounting part. The upper structure can be used to assist in clamping the installation position of the equipment to prevent the equipment from loosening after long-term use, thereby improving the applicability of the device.
[0027] In the technical solution of the present application, a piezoelectric ceramic crystal 3 is installed in the housing 2, a core 4 is installed on the piezoelectric ceramic crystal 3, and the core 4 adopts a triangular shear structure design, an integrated conditioning circuit 5 is installed in the housing 2, piezoelectric ceramics are used as sensitive elements, and the core 4 adopts a shear structure design, which is very stable and almost insensitive to environmental inputs such as bending of the base 1 and thermal transients, and has low base strain sensitivity, high resonant frequency and excellent output stability. Excellent frequency response performance.
[0028] In the technical solution of the present application, a slide groove is opened on the inner wall of the mounting frame 8, and a slider 13 is slidably connected in the slide groove. The lower end of the slider 13 is connected to the moving plate 10 to limit the moving plate 10 and prevent the moving plate 10 from rotating.
[0029] In the technical solution of the present application, a slide rod 14 is fixedly connected to the inner wall of the slide groove, the slide rod 14 passes through the slider 13, and the slider 13 is slidably connected to the slide rod 14 to prevent the slider 13 from escaping from the slide groove.
[0030] In the technical solution of the present application, a rolling groove is opened at the upper end of the slider 13, and a rolling ball 15 is arranged in the rolling groove. The ball 15 is arranged through the notch of the rolling groove, and the ball 15 is rollingly connected to the bottom of the groove, thereby reducing the friction between the slider 13 and the groove.
[0031] In the technical solution of the present application, one end of the screw rod 9 is connected to a rotating block 16 to facilitate the staff to rotate the screw rod 9.
[0032] When in use, it is installed through the mounting holes on the mounting plate 7, and then the screw rod 9 is rotated. The rotation of the screw rod 9 will apply a force to the movable plate 10 through the action of the thread. The movable plate 10 will move horizontally under the force. The movement of the movable plate 10 will drive the connecting rod 11 to move, and the movement of the connecting rod 11 will drive the clamping plate 12 to move. When the clamping plate 12 contacts the mounting part, the clamping plate 12 will clamp the mounting part.
Claims
1. A uniaxial modal acceleration sensor, comprising a base (1), Features: The base (1) is connected to a housing (2), the upper end of the housing (2) is equipped with a connector (6), the lower end of the base (1) is connected to a mounting plate (7), the lower end of the mounting plate (7) is provided with a mounting hole, the upper end of the mounting plate (7) is symmetrically connected to two mounting frames (8) with respect to the base (1), a screw rod (9) is rotatably connected to the side wall of the mounting frame (8), a movable plate (10) is threadedly connected to the rod wall of the screw rod (9), the side walls of the two movable plates (10) on the opposite sides are both connected to connecting rods (11), the other end of the connecting rod (11) is equipped with a clamping plate (12), and the two clamping plates (12) are symmetrically arranged with respect to the mounting hole.
2. A uniaxial modal acceleration sensor according to claim 1, It is characterized in that A piezoelectric ceramic crystal (3) is installed in the housing (2), a core (4) is installed on the piezoelectric ceramic crystal (3), and the core (4) adopts a triangular shear structure design, and an integrated conditioning circuit (5) is installed in the housing (2).
3. A uniaxial modal acceleration sensor according to claim 1, It is characterized in that A sliding groove is provided on the inner side wall of the mounting frame (8), a sliding block (13) is slidably connected in the sliding groove, and the lower end of the sliding block (13) is connected to the moving plate (10).
4. A uniaxial modal acceleration sensor according to claim 3, It is characterized in that A sliding rod (14) is fixedly connected to the inner groove wall of the sliding groove. The sliding rod (14) passes through the sliding block (13), and the sliding block (13) is slidably connected to the sliding rod (14).
5. A uniaxial modal acceleration sensor according to claim 4, It is characterized in that The upper end of the sliding block (13) is provided with a rolling groove, in which a rolling ball (15) is arranged. The ball (15) passes through the notch of the rolling groove and is rollingly connected to the bottom of the sliding groove.
6. The uniaxial modal acceleration sensor according to claim 1, It is characterized in that One end of the screw rod (9) is connected to a rotating block (16).