Multi-channel integrated vibration sensor calibration device

Abstract

The utility model belongs to the field of sensor calibration, and particularly relates to a multichannel integrated vibration sensor calibration device which comprises a modal vibration exciter body. The interior of the modal vibration exciter body is in transmission connection with a test rod, the top end of the test rod is provided with a limiting assembly, the limiting assembly comprises a telescopic rod fixedly installed at the top end of the test rod, and the surface of the limiting assembly is provided with a wiring assembly; the length of the telescopic rod is adjusted to enable the moving ring to be located at the top of the sensor body, and then the top of the sensor body is limited through the multiple sets of limiting plates, so that the situation that the sensor body shakes in the detection process and influences the detection precision is avoided; the wire is wound in the winding sleeve, the pressing plate is used for pressing and limiting the wire, the situation that in the detection process, due to loosening of the wire, an output signal is unstable is avoided, and therefore the detection precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of sensor calibration, in particular to a multi-channel integrated vibration sensor calibration device. Background Art

[0002] A vibration sensor is a device used to measure vibration and shock. It can convert mechanical vibration into electrical signal output for vibration analysis and monitoring. Vibration sensors usually use voltage, resistance or inductance working principles to measure vibration acceleration, acceleration or displacement. When using a vibration sensor, in order to ensure measurement accuracy, it needs to be calibrated before use. By using the vibration sensor calibration device, the accuracy and response characteristics of the vibration sensor can be tested and adjusted to ensure the accuracy and reliability of its measurement results.

[0003] Currently, before using a calibration device to calibrate a vibration sensor, the sensor needs to be fixed by a fixing device. In order to ensure stable fixation, gaskets and fillers are usually used for auxiliary fixation. However, during subsequent testing, the calibration device may cause the sensor to vibrate, which may cause the gaskets and fillers to fall off, and then cause the sensor to swing during testing, thereby reducing the test accuracy. In addition, the sensor wires are not fixed during testing, which will cause loosening or pulling during the vibration process, resulting in unstable output signals. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art and avoid the problem of not stably fixing the sensor during the calibration process, the utility model proposes a multi-channel integrated vibration sensor calibration device.

[0005] The utility model solves the technical problem by adopting a technical solution: a multi-channel integrated vibration sensor calibration device, comprising a modal exciter body; the modal exciter body is internally connected to a test rod, the top of the test rod is provided with a limiting component, and the surface of the limiting component is provided with a wiring component;

[0006] The limiting component includes a telescopic rod fixedly installed on the top of the test rod, a clamping groove is provided on the top of the telescopic rod away from the center of the modal exciter body, a clamping screw is threadedly connected on the side of the telescopic rod away from the center of the modal exciter body, a moving ring is fixedly installed on the top of the telescopic rod, a pressure spring is fixedly installed on the inner wall of the moving ring, a connecting rod is fixedly installed on the end of the pressure spring away from the moving ring, and a limiting plate is fixedly installed on the end of the connecting rod away from the pressure spring.

[0007] Preferably, the top end of the test rod extends to above the modal exciter body, and there are eight test rods, which are circumferentially distributed inside the modal exciter body, so that multiple sensors can be calibrated simultaneously.

[0008] Preferably, the snap-in screw and the snap-in groove are adapted to be snap-into each other, and the snap-in screw is rotated to snap into the inside of the snap-in groove, so that the telescopic rod cannot be extended or retracted, thereby limiting the length of the telescopic rod. The end of the limiting plate away from the connecting rod is adapted to be snap-into the sensor body, and multiple limiting plates can limit the top of the sensor.

[0009] Preferably, the wiring assembly includes a connecting rod fixedly mounted on the side of the movable ring, a winding sleeve being fixedly mounted on the end of the connecting rod away from the movable ring, two threaded rods being symmetrically threadedly connected on the surface of the winding sleeve, a pressing plate being fixedly mounted on the top of the threaded rod, and a nut being threadedly connected on the surface of the threaded rod.

[0010] Preferably, the top of the sensor body is electrically connected to a wire, the wire and the inside of the winding sleeve are adapted to be wound, the bottom end of the pressing plate and the wire are adapted to abut against each other, the wire can be wound and placed inside the winding sleeve, and the wire is limited by the pressing plate.

[0011] Preferably, there are two nuts, which are respectively located on the upper and lower sides of the winding sleeve, and the proximal ends of the two winding sleeves are respectively matched and abutted with the upper and lower ends of the winding sleeve. The position of the threaded rod is limited by rotating the nut, so that the pressing plate can stably limit the wire.

[0012] The utility model has at least the following beneficial technical effects:

[0013] The utility model adjusts the length of the telescopic rod so that the moving ring is located at the top position of the sensor body, and then limits the top of the sensor body through multiple groups of limiting plates, so that the sensor body will not shake during the detection process to affect the detection accuracy; by winding the wire inside the winding sleeve and pressing and limiting the wire through the pressing plate, it is avoided that the output signal is unstable due to the loose wire during the detection process, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the top structure of the test rod table of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the limiting components of the utility model;

[0017] Figure 4This is a schematic diagram of the wiring assembly structure of the utility model.

[0018] Description of reference numerals:

[0019] 1. Modal exciter body; 2. Test rod; 3. Limiting assembly; 31. Telescopic rod; 32. Snap-in groove; 33. Snap-in screw; 34. Moving ring; 35. Pressure spring; 36. Connecting rod; 37. Limiting plate; 4. Wiring assembly; 41. Connecting rod; 42. Winding sleeve; 43. Threaded rod; 44. Pressing plate; 45. Nut; 5. Sensor body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The following is combined with Figure 1 —4 further details of this application,

[0022] The present application embodiment discloses a multi-channel integrated vibration sensor calibration device. Figure 1 A multi-channel integrated vibration sensor calibration device includes a modal exciter body 1; the modal exciter body 1 is internally transmission-connected with a test rod 2, the top of the test rod 2 extends to the top of the modal exciter body 1, there are eight test rods 2, and the eight test rods 2 are circumferentially distributed inside the modal exciter body 1, and multiple sensors can be calibrated at the same time. A limiting component 3 is arranged at the top of the test rod 2, and a wiring component 4 is arranged on the surface of the limiting component 3.

[0023] Reference Figure 2 - Figure 3The limiting component 3 includes a telescopic rod 31 fixedly mounted on the top of the test rod 2, a clamping groove 32 is opened on the top of the telescopic rod 31 away from the center of the modal exciter body 1, and a clamping screw 33 is threadedly connected to the side of the telescopic rod 31 away from the center of the modal exciter body 1, a moving ring 34 is fixedly mounted on the top of the telescopic rod 31, a pressure spring 35 is fixedly mounted on the inner wall of the moving ring 34, a connecting rod 36 is fixedly mounted on the end of the pressure spring 35 away from the moving ring 34, and a limiting plate 37 is fixedly mounted on the end of the connecting rod 36 away from the pressure spring 35, the clamping screw 33 and the clamping groove 32 are adapted to be clamped, and the clamping screw 33 is rotated to be clamped inside the clamping groove 32, so that the telescopic rod 31 cannot be extended or retracted, thereby limiting the length of the telescopic rod 31, and the end of the limiting plate 37 away from the connecting rod 36 is adapted to be clamped with the sensor body 5, and multiple limiting plates 37 can limit the top of the sensor.

[0024] Reference Figure 2 and Figure 4 The wiring assembly 4 includes a connecting rod 41 fixedly mounted on the side of the moving ring 34, and a winding sleeve 42 is fixedly mounted on one end of the connecting rod 41 away from the moving ring 34. Two threaded rods 43 are symmetrically threadedly connected to the surface of the winding sleeve 42, and a pressing plate 44 is fixedly mounted on the top of the threaded rod 43. A wire is electrically connected to the top of the sensor body 5, and the wire and the interior of the winding sleeve 42 are adapted to be wound, and the bottom end of the pressing plate 44 is adapted to abut against the wire. The wire can be wound and placed inside the winding sleeve 42, and the wire is limited by the pressing plate 44. A nut 45 is threadedly connected to the surface of the threaded rod 43, and there are two nuts 45, which are respectively located on the upper and lower sides of the winding sleeve 42, and the proximal ends of the two winding sleeves 42 are adapted to abut against the upper and lower ends of the winding sleeve 42, and the nut 45 is rotated so that the position of the threaded rod 43 is limited, so that the pressing plate 44 can stably limit the wire.

[0025] Working principle: After the operator assembles the sensor body 5, the magnetic attraction device at the bottom of the sensor body 5 is adsorbed on the top of the test rod 2. Then the operator adjusts the telescopic rod 31 to extend and retract, so that the movable ring 34 is located at the top of the sensor body 5. Then the operator rotates the clamping screw 33 to move the clamping screw 33 into the inside of the clamping groove 32 until the clamping screw 33 is clamped in the inside of the clamping groove 32. At this time, the length of the telescopic rod 31 is limited, that is, the height of the movable ring 34 is limited. Then, under the action of the elastic force of the pressure spring 35, the pressure spring 35 will push the connecting rod 36 and the limiting plate 37, so that the limiting plate 37 abuts against the surface of the sensor body 5. At this time, multiple groups of limiting plates 37 limit the top of the sensor body 5.

[0026] Afterwards, the operator passes the wire electrically connected to the top of the sensor body 5 through the inside of the winding sleeve 42. If the wire is long, it can be passed through the two winding sleeves 42 in sequence. At this time, the wire is preliminarily restricted. Then the operator pulls the threaded rod 43 downward, so that the threaded rod 43 drives the pressing plate 44 to move downward until the bottom end of the pressing plate 44 abuts against the surface of the wire. At this time, the operator rotates the two nuts 45, so that the two nuts 45 respectively abut against the upper and lower ends of the winding sleeve 42. At this time, the two nuts 45 restrict the position of the threaded rod 43, that is, at this time, the pressing plate 44 stably restricts the wire.

[0027] After the preparation operation is completed, the operator starts the modal exciter body 1 to drive the test rod 2 to move up and down reciprocatingly, so as to calibrate the sensor body 5.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A multi-channel integrated vibration sensor calibration device, characterized in that: It comprises a modal exciter body (1); a test rod (2) is connected to the inside of the modal exciter body (1) in a transmission manner; a limiting component (3) is arranged at the top end of the test rod (2); and a wiring component (4) is arranged on the surface of the limiting component (3); The limiting component (3) comprises a telescopic rod (31) fixedly mounted on the top of the test rod (2); a clamping groove (32) is provided on the top of the telescopic rod (31) away from the center of the modal exciter body (1); a clamping screw (33) is threadedly connected to the side of the telescopic rod (31) away from the center of the modal exciter body (1); a moving ring (34) is fixedly mounted on the top of the telescopic rod (31); a pressure spring (35) is fixedly mounted on the inner wall of the moving ring (34); a connecting rod (36) is fixedly mounted on one end of the pressure spring (35) away from the moving ring (34); and a limiting plate (37) is fixedly mounted on one end of the connecting rod (36) away from the pressure spring (35).

2. A multi-channel integrated vibration sensor calibration device according to claim 1, characterized in that: The top end of the test rod (2) extends to the top of the modal exciter body (1).

3. A multi-channel integrated vibration sensor calibration device according to claim 1, characterized in that: There are eight test rods (2), and the eight test rods (2) are circumferentially distributed inside the modal exciter body (1).

4. A multi-channel integrated vibration sensor calibration device according to claim 1, characterized in that: The clamping screw (33) and the clamping groove (32) are adapted to be clamped.

5. The multi-channel integrated vibration sensor calibration device according to claim 1, characterized in that: One end of the limiting plate (37) away from the connecting rod (36) is adapted and snap-connected with the sensor body (5).

6. A multi-channel integrated vibration sensor calibration device according to claim 5, characterized in that: The wiring assembly (4) comprises a connecting rod (41) fixedly mounted on the side of the moving ring (34); a winding sleeve (42) is fixedly mounted on one end of the connecting rod (41) away from the moving ring (34); two threaded rods (43) are symmetrically threadedly connected on the surface of the winding sleeve (42); a pressing plate (44) is fixedly mounted on the top end of the threaded rod (43); and a nut (45) is threadedly connected on the surface of the threaded rod (43).

7. A multi-channel integrated vibration sensor calibration device according to claim 6, characterized in that: The top end of the sensor body (5) is connected to a conductive wire, which is adapted to be wound around the inside of the winding sleeve (42).

8. The multi-channel integrated vibration sensor calibration device according to claim 7, characterized in that: The bottom end of the pressing plate (44) is adapted to abut against the wire.

9. The multi-channel integrated vibration sensor calibration device according to claim 6, characterized in that: There are two nuts (45) which are respectively located on the upper and lower sides of the winding sleeve (42).

10. The multi-channel integrated vibration sensor calibration device according to claim 9, characterized in that: The adjacent ends of the two winding sleeves (42) are respectively adapted to abut against the upper and lower ends of the winding sleeve (42).

Images