Simulation target dynamic periodic displacement standard device

Abstract

The utility model discloses a simulation target dynamic periodic displacement standard device, which comprises a base, a vertical support column, a driving mechanism, a rotating plate and a target, the lower end of the support column is fixed on the base, the driving mechanism is arranged on the support column, the power output end of the driving mechanism is connected with the central position of the rotating plate, and the rotating plate is fixed on the base. The target is installed on the rotating plate in a sliding mode so that the target can move in the radial direction of the rotating plane of the rotating plate for position adjustment. The utility model relates to a two-dimensional dynamic displacement standard device which is used for generating standard dynamic displacement for a target. According to the utility model, the target is driven to generate circular motion, so that the central point of the target generates periodic displacement motion in the X direction and the Y direction; the utility model provides a simple, reliable and high-precision standard dynamic displacement for instrument traceability in the monitoring field.

Description

Technical Field

[0001] The utility model relates to a dynamic displacement standard device, in particular to a dynamic periodic displacement standard device for simulating a target. Background Art

[0002] Dynamic displacement is difficult to measure and trace in length measurement, but certain specific fields and applications require dynamic displacement measurement and accuracy. In some cases, vibration sensors are used to measure the displacement of periodic motion. These displacements are simulated using standard vibration tables, but the absolute magnitude is generally small.

[0003] The traditional dynamic displacement standard device includes a dynamic displacement adjustment device, a rotating mechanism, a balancing device, a motor, a displacement display unit and a frequency and speed display unit. It generates dynamic displacement through one-dimensional reciprocating motion, and has problems such as poor repeatability, low frequency, difficult traceability and high control requirements for the standard device. In addition, the one-dimensional reciprocating motion has high load requirements for the control motor and the amplitude of the standard vibration table is relatively small. Utility Model Content

[0004] The purpose of the utility model is to provide a standard device for simulating the dynamic periodic displacement of a target, which can provide a simple, reliable and high-precision standard dynamic displacement.

[0005] The purpose of the present utility model is achieved through the following technical solution: a standard device for simulating the dynamic periodic displacement of a target, characterized in that it includes a base, a vertical support column, a driving mechanism, a rotating plate and a target, the lower end of the support column is fixed to the base, the driving mechanism is installed on the support column and its power output end is connected to the center position of the rotating plate, and the target can be slidably installed on the rotating plate so that the target can be moved radially along the rotating plane of the rotating plate to adjust its position.

[0006] The utility model is a two-dimensional dynamic displacement standard device, which is used to generate a standard dynamic displacement of a target. The utility model drives the target to generate circular motion, thereby achieving a periodic displacement motion of the target center point in the X and Y directions. The utility model is aimed at instrument traceability in the monitoring field and provides a simple, reliable and high-precision standard dynamic displacement.

[0007] The rotating plate of the utility model is a rectangular plate body, and a slide groove extending along its length direction is provided on the front of the rotating plate, and a slider is provided on the back of the target. The slider is located in the slide groove and can move along the slide groove to drive the target to move on the rotating plate, and can be positioned by a locking mechanism.

[0008] The locking member of the utility model passes through the side wall of the sliding groove in a direction perpendicular to the long side of the rotating plate, and can be screwed to tightly abut against the sliding block to position the target.

[0009] The driving mechanism of the utility model adopts a motor, which is fixed on the back of the support column and has a power output end that passes through the support column and extends to the front thereof to connect with the rotating plate.

[0010] The utility model provides a counterweight on the rotating plate and at one end opposite to the target.

[0011] The rotation speed of the target of the utility model is 0-600 r / min to simulate a dynamic displacement frequency of 0-10 Hz.

[0012] The rotating plate of the utility model is made of light aluminum alloy, which is beneficial to reducing the load of the motor rotation and the large centrifugal force generated due to the unbalanced rotating mass.

[0013] Compared with the prior art, the present invention has the following significant effects:

[0014] (1) The utility model is a two-dimensional dynamic displacement standard device, which is used to generate a standard dynamic displacement of a target. The utility model drives the target to produce circular motion, thereby achieving a periodic displacement motion of the target center point in the X and Y directions. The utility model is aimed at the traceability of instruments in the monitoring field, and provides a simple, reliable and high-precision standard dynamic displacement.

[0015] (2) The utility model has the advantages of simple structure, low cost and strong practicability, and is suitable for wide promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a side view of the present utility model.

[0019] In the figure: 1-base, 2-support column, 3-driving mechanism, 4-rotating plate, 5-target, 6-chute, 7-slider, 8-power output end. DETAILED DESCRIPTION

[0020] The present invention is further illustrated below through the description of specific implementation methods, but this is not a limitation of the present invention. Those skilled in the art can make various modifications or improvements based on the basic idea of ​​the present invention, but as long as they do not deviate from the basic idea of ​​the present invention, they are all within the scope of protection of the present invention.

[0021] like Figure 1 and Figure 2 As shown, the utility model is a standard device for simulating the dynamic periodic displacement of a target, which includes a base 1, a vertical support column 2, a driving mechanism 3, a rotating plate 4 and a target 5. The lower end of the support column 2 is fixed to the base 1, the driving mechanism 3 is installed on the support column 2 and its power output end 8 is connected to the center position of the rotating plate 4, and the target 5 can be slidably installed on the rotating plate 4 so that the target 5 can be moved radially along the rotating plane of the rotating plate 4 for position adjustment.

[0022] In this embodiment, the rotating plate 4 is a rectangular plate made of lightweight aluminum alloy. A slide groove 6 extending along its length is provided on the front of the rotating plate 4, and a slider 7 is provided on the back of the target 5. The slider 7 is located in the slide groove 6, and the slider 7 can move along the slide groove 6 to drive the target 5 to move on the rotating plate 4, and can be positioned by a locking mechanism.

[0023] In this embodiment, the locking mechanism uses a locking member (not shown in the figure), which passes through the side wall of the slide 6 in a direction perpendicular to the long side of the rotating plate 4 and can be tightened against the slider 7 by screwing the locking member to position the target 5.

[0024] In this embodiment, the driving mechanism 3 is a motor, which is fixed to the back of the support column 2 and has a power output end 8 that passes through the support column 2 and extends to the front thereof to connect to the rotating plate 4 .

[0025] A counterweight is installed on the rotating plate 4, opposite the target 5. Because the rotating plate and the target can generate significant centrifugal force, the counterweight can be adjusted 180 degrees to achieve balanced operation. The target 5 rotates at a speed of 0 to 600 rpm to simulate a dynamic displacement frequency of 0 to 10 Hz.

[0026] The working principle of this utility model is as follows:

[0027] 1. The frequency of the periodic motion is controlled by the motor. The rotation of the motor drives the entire eccentric device (rotating plate and target) to rotate periodically. The dynamic displacement is generated by controlling the eccentricity. If the eccentricity is r, the maximum value minus the minimum value of the dynamic displacement is 2r.

[0028] 2. The image displacement monitor measures the dynamic displacement of the target by tracking its motion through image processing. The target's motion on the dynamic displacement standard device provides it with periodic displacement in the X and Y directions. The dynamic displacement standard device operates at a speed of n revolutions per second. At the same time, the target center deviates from the operating center by a distance of l. The target will then perform periodic motion within the range of (-l to +l) in the X direction and (-l to +l) in the Y direction. As long as the speed n and the distance l of the target center from the operating center can be precisely controlled and measured, the device can provide the measuring device with a dynamic displacement with a fixed frequency, high stability, and high precision, avoiding the high load requirements of the control motor caused by one-dimensional reciprocating motion and the relatively small amplitude of the standard vibration table.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical concepts disclosed herein shall be covered by the claims of the present invention.

Claims

1. A standard device for simulating target dynamic periodic displacement, characterized by: It includes a base, a vertical support column, a driving mechanism, a rotating plate and a target. The lower end of the support column is fixed on the base. The driving mechanism is installed on the support column and its power output end is connected to the center position of the rotating plate. The target is slidably installed on the rotating plate so that the target can be moved radially along the rotating plane of the rotating plate to adjust its position.

2. The target dynamic periodic displacement standard device according to claim 1, characterized in that: The rotating plate is a rectangular plate body, and a slide groove extending along its length direction is provided on the front of the rotating plate. A slider is provided on the back of the target. The slider is located in the slide groove and can move along the slide groove to drive the target to move on the rotating plate, and can be positioned by a locking mechanism.

3. The target dynamic periodic displacement standard device according to claim 2, characterized in that: The locking mechanism adopts a locking piece, which passes through the side wall of the sliding groove in a direction perpendicular to the long side of the rotating plate and can be tightened against the sliding block by screwing the locking piece to position the target.

4. The target dynamic periodic displacement standard device according to claim 3, characterized in that: The driving mechanism adopts a motor, which is fixed on the back of the support column and has a power output end that passes through the support column and extends to the front of the support column to connect with the rotating plate.

5. The target dynamic periodic displacement standard device according to claim 4, characterized in that: A counterweight is provided on the rotating plate at one end opposite to the target.

6. The target dynamic periodic displacement standard device according to claim 5, characterized in that: The rotation speed of the target is 0-600 r / min to simulate a dynamic displacement frequency of 0-10 Hz.

7. The target dynamic periodic displacement standard device according to claim 6, characterized in that: The rotating plate is made of lightweight aluminum alloy.

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