CN214893381U - A detection platform for three-dimensional dynamic measurement equipment - Google Patents
A detection platform for three-dimensional dynamic measurement equipment Download PDFInfo
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- CN214893381U CN214893381U CN202120976836.0U CN202120976836U CN214893381U CN 214893381 U CN214893381 U CN 214893381U CN 202120976836 U CN202120976836 U CN 202120976836U CN 214893381 U CN214893381 U CN 214893381U
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Abstract
本实用新型提供一种用于三维动态测量设备的检测平台，包括承托部件、连接于承托部件上的驱动部件、受驱动部件驱动而进行运动的位移部件、连接于位移部件并随其同步运动的接收器、控制驱动部件进行运动并与其电性相连的控制器、以及与控制器电性相连的轨迹生成模块，且所述接收器与一测量仪器电性相连。本实用新型采用驱动部件带动接收器进行运动，通过将接收器采集的数据与接收器运动的运动轨迹曲线进行对比来评判测量仪器的精度；且本装置性能稳定，可控性好，节省时间和人力物力，降低了检测成本，提高了检测效率，具有较好的实用性。
The utility model provides a detection platform for three-dimensional dynamic measuring equipment, comprising a supporting part, a driving part connected to the supporting part, a displacement part driven by the driving part to move, and a displacement part connected to the displacement part and synchronized with it A receiver for movement, a controller for controlling the movement of the driving component and electrically connected to it, and a trajectory generation module electrically connected to the controller, and the receiver is electrically connected to a measuring instrument. The utility model adopts the driving component to drive the receiver to move, and judges the accuracy of the measuring instrument by comparing the data collected by the receiver with the motion trajectory curve of the receiver movement; and the device has stable performance, good controllability, and saves time and energy. Manpower and material resources, reduce the detection cost, improve the detection efficiency, and have good practicability.
Description
Technical Field
The utility model relates to a measuring equipment detects technical field, especially relates to a testing platform for three-dimensional dynamic measuring equipment.
Background
With the gradual improvement of the economic level and the scientific technology in China, various high and new technologies are continuously promoted, and great progress and remarkable achievement are obtained particularly in the aspect of dynamic measurement technology. Due to the production and practice requirements, the three-dimensional dynamic measurement technology is widely applied to many engineering practices, and at present, the development and application of the three-dimensional dynamic measurement technology show a diversified trend, which is mainly reflected in several aspects such as measurement means, measurement instruments and application fields. The existing three-dimensional dynamic measuring instruments are various in variety and different in function, and are suitable for detection and measurement in different environments, such as pipeline detectors, multi-beam sonars or frequency recorders and the like. In the dynamic measurement process, the precision of a receiving device is often required to be higher, so that the measuring instrument needs to be approved and checked before being put into use to ensure the measuring effect and the measuring precision of the instrument; and the measured data is less, and the accuracy degree of the measuring device is difficult to judge by partial data, so the practicability is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main objective is the problem of solving and existing among the prior art, provides a testing platform for three-dimensional dynamic measurement equipment.
In order to solve the technical problem, the utility model discloses a technical scheme is: a detection platform for three-dimensional dynamic measurement equipment comprises a bearing part, a driving part connected to the bearing part, a displacement part driven by the driving part to move, a receiver connected to the displacement part and moving synchronously with the displacement part, a controller controlling the driving part to move and electrically connected with the controller, and a track generation module electrically connected with the controller, wherein the receiver is electrically connected with a measurement instrument;
the driving component and the displacement component are connected to the bearing component, the input end of the displacement component is connected to the output end of the driving component, the receiver is connected to the displacement component and is electrically connected with a measuring instrument, the controller is electrically connected with the driving component, and the track generation module is electrically connected with the controller.
Furthermore, the driving component and the displacement component form a crank rocker structure, and the crank rocker structure is used for driving the receiver to perform simple harmonic motion.
Furthermore, the driving part comprises a connecting seat, a servo motor connected to the connecting seat, a wheel disc connected to the output end of the servo motor, an eccentric shaft with the end part inserted on the wheel disc, and a connecting rod rotationally connected with the eccentric shaft, and the connecting rod is hinged with the displacement part.
Further, the ratio of the distance of the eccentric shaft from the center of the wheel disc to the length of the connecting rod is less than 1/9.
Furthermore, a plurality of groups of assembly holes are uniformly formed in the wheel disc from the circle center to the edge, and the eccentric shaft is fixedly inserted into one group of assembly holes.
Further, the displacement component comprises a linear slide rail and a slide block, the linear slide rail is connected to the bearing component, the slide block is matched with the linear slide rail in a sliding mode and is connected with the receiver.
Further, the supporting part is arranged to be a first base, and the driving part and the displacement part are connected with the first base.
Further, be provided with long spirit level on the first base, long spirit level is used for detecting the plane degree of first base.
Further, the supporting component comprises a second base and a supporting frame, the second base is connected with the supporting frame, and the supporting frame is respectively connected with the driving component and the displacement component.
Further, a level bubble is arranged at the top of the supporting frame and used for detecting the flatness and the straightness of the supporting frame.
Furthermore, a support rod is further arranged on the bearing component, and two ends of the support rod are respectively connected with the second base and the support frame.
Furthermore, the supporting frame is hinged to the second base, a telescopic rod is arranged on the supporting component, the end portion of the telescopic rod is hinged to the second base, the output end of a piston rod of the telescopic rod is hinged to the supporting frame, and the telescopic rod is used for stabilizing, reinforcing and adjusting the inclination angle of the supporting frame.
The utility model has the advantages and positive effects that:
(1) the utility model discloses novel structure, reliable and stable, constitute the crank rocker structure between drive unit and the displacement part, can drive slider and the receiver that is connected on the slider and carry out simple harmonic motion along the linear slide rail under servo motor's effect, utilize the orbit to generate the motion orbit curve that the module obtained the receiver that is connected on the slider; the receiver which does simple harmonic motion along with the sliding block is used for collecting data of the detected target, the collected data are fed back to the measuring instrument to be recorded, the dynamic measuring precision of the measuring instrument is judged by comparing the data collected by the receiver with the motion track curve of the motion of the receiver, and if the deviation between the data and the motion track curve is smaller, the precision of the measuring instrument is higher; if the deviation between the two is larger, the accuracy is worse; the device has stable performance and good controllability, can acquire a large amount of data at one time, greatly saves detection time, saves a large amount of manpower and material resources, reduces detection cost and effectively improves detection efficiency; the device can provide sufficient data, has good contrast, and is convenient for comparing the actually measured data with the real data, so the detection accuracy is high;
(2) the device can be calibrated before detection by virtue of the level gauge and the level bubble on the bearing part, so that the flatness of the first base and the second base in a horizontal state is ensured, the supporting frame can be ensured to be in a vertical state, the interference and influence on a detection result caused by the flatness and the verticality of the device are reduced, and the detection accuracy of equipment is improved;
(3) the assembling holes are uniformly formed in the direction from the circle center to the edge of the wheel disc, so that the eccentric shaft can be conveniently installed, and the distance between the eccentric shaft and the center of the wheel disc can be conveniently adjusted, so that the wheel disc can provide rotating radiuses with different lengths, the device can simulate simple harmonic motion with different amplitudes, and the practicability of the device is improved;
(4) the inclination angle of the support frame hinged on the second base can be adjusted by adjusting the length of the piston rod of the telescopic rod, so that the detection range of the device is enlarged, and the receiver can carry out data measurement on the measured target in the states of different inclination angles, thereby improving the detection effect on the measurement level of the measuring instrument.
Drawings
Fig. 1 is a schematic structural view of the present invention in embodiment 1;
fig. 2 is a schematic structural view of the present invention in embodiment 2;
FIG. 3 is a schematic structural view of the present invention in example 3;
FIG. 4 is a schematic view of the structure of the driving part;
FIG. 5 is a schematic diagram of the slider performing simple harmonic motion;
FIG. 6 is a graph illustrating the motion trajectory of the slider;
FIG. 7 is a block diagram of the electrical control relationship between the servo motor and the trajectory generation module and the controller;
FIG. 8 is a block diagram of the electrical control relationship between the receiver and the measurement instrument.
In the figure: 2. a drive member; 21. a connecting seat; 22. a servo motor; 23. a wheel disc; 24. an eccentric shaft; 25. a connecting rod; 26. an assembly hole; 3. a displacement member; 31. a linear slide rail; 32. a slider; 4. a receiver; 5. a controller; 6. a trajectory generation module; 71. a first base; 72. a long level; 81. a second base; 82. a support frame; 83. a level bubble; 84. a support bar; 9. a telescopic rod.
Detailed Description
For a better understanding of the present invention, the following further description is given in conjunction with the following embodiments and accompanying drawings.
Example 1
As shown in fig. 1, 7 and 8, an inspection platform for a three-dimensional dynamic measurement device includes a supporting member, a driving member 2 connected to the supporting member, a displacement member 3 driven by the driving member 2 to move, a receiver 4 connected to the displacement member 3 and moving synchronously therewith, a controller 5 controlling the driving member 2 to move and electrically connected with the controller 5, and a trajectory generation module 6 electrically connected with the controller 5, wherein the receiver 4 is electrically connected with a measurement device; the driving part 2 and the displacement part 3 are both connected on the bearing part, the input end of the displacement part 3 is connected with the output end of the driving part 2, the receiver 4 is connected on the displacement part 3, the receiver 4 is electrically connected with a measuring instrument, the controller 5 is electrically connected with the driving part 2, the track generation module 6 is electrically connected with the controller 5, as the driving part 2 is electrically connected with the controller 5, the controller 5 can control the driving part 2 to drive the displacement part 3 to move, so that the displacement part 3 drives the receiver 4 to move, the receiver 4 can continuously measure and collect data of a detected target in the moving process, and transmits the data collected by the receiver 4 to the measuring instrument, and the measuring instrument displays and records the data; meanwhile, the track generation module 6 obtains a motion track curve of the receiver 4 connected to the slide block 32 through the controller 5, and compares and analyzes a numerical value on the motion track curve of the slide block 32 with a numerical value recorded by the measuring instrument; the closer the data on the measuring instrument is to the data value on the motion track curve of the slide 32, the higher the measuring precision of the measuring instrument is, if a certain difference exists between the two groups of data, the higher the deviation is, the poorer the measuring effect of the measuring instrument is.
Specifically, the displacement component 3 for carrying the receiver 4 is linearly moved by the driving component 2 in a controllable track manner, and the real motion track of the receiver 4 is calculated and generated by the track generation module 6 according to the driving mode of the displacement component 3 by the driving component 2; the controllable track refers to measurable regular linear motion such as circular motion and linear motion through driving, and the motion track can be calculated through the prior art.
As shown in fig. 1 and 4, the driving part 2 and the displacement part 3 form a crank rocker structure, the crank rocker structure is used for driving the receiver 4 to perform simple harmonic motion, the driving part 2 includes a connecting seat 21, a servo motor 22 connected to the connecting seat 21, a wheel disc 23 connected to an output end of the servo motor 22, an eccentric shaft 24 with an end inserted on the wheel disc 23, and a connecting rod 25 rotatably connected to the eccentric shaft, and the connecting rod 25 is hinged to the displacement part 3, the servo motor 22 drives the wheel disc 23 to rotate in the rotating process, so that the wheel disc 23 drives the eccentric shaft 24 inserted on the wheel disc 23 to rotate, the eccentric shaft 24 drives the displacement part 3 to move through the connecting rod 25, so that the displacement part 3 drives the receiver 4 to perform simple harmonic motion, the wheel disc 23 is uniformly provided with a plurality of sets of assembling holes 26 from the center of the wheel disc to the edge, the eccentric shaft 24 is fixedly inserted in one set of the assembling holes 26, in order to simulate simple harmonic motion with different amplitudes, the distance between the eccentric shaft 24 and the center of the wheel disc 23 can be adjusted to enlarge the detection range of the device.
As shown in fig. 1, the displacement component 3 includes a linear slide rail 31 and a slide block 32, the linear slide rail 31 is connected to the supporting component, the slide block 32 is connected to the linear slide rail 31 in a sliding manner, and the slide block 32 is connected to the receiver 4, the connecting rod 25 in the driving component 2 drives the slide block 32 to move, so that the slide block 32 and the receiver 4 connected to the slide block 32 continuously perform reciprocating simple harmonic motion along the linear slide rail 31, and when the slide block 32 performs the simple harmonic motion, the controller 5 transmits the motion information of the driving component 2 and the receiver 4 to the trajectory generation module 6, and the trajectory generation module 6 obtains the motion trajectory curve of the receiver 4 connected to the slide block 32, so as to compare the motion curve with the data recorded by the measuring instrument.
As shown in fig. 1, the supporting member is configured as a first base 71, the driving member 2 and the displacement member 3 are both connected to the first base 71, so that the slider 32 in the displacement member 3 is driven by the servo motor 22 and the connecting rod 25 to perform simple harmonic motion in the horizontal direction, so that the receiver 4 can perform data acquisition in the horizontal direction, and meanwhile, the first base 71 is provided with a long level 72, and the long level 72 is used for detecting the flatness of the first base 71, thereby ensuring the detection effect of the device in the detection process.
Example 2
As shown in fig. 2, the difference from embodiment 1 is that the supporting member includes a second base 81 and a supporting frame 82, the second base 81 is connected to the supporting frame 82, the supporting frame 82 is connected to the driving member 2 and the displacement member 3, the driving member 2 and the displacement member 3 are fixed to the supporting frame 82, so that the slider 32 in the displacement member 3 performs a simple harmonic motion along the vertical direction, a level bubble 83 is disposed on the top of the supporting frame 82, the level bubble 83 is used for detecting the flatness and straightness of the supporting frame 82, so as to ensure that the supporting frame 82 is in a vertical state, so as to ensure the detection result of the device in the vertical direction, a supporting rod 84 is further disposed on the supporting member, and both ends of the supporting rod 84 are connected to the second base 81 and the supporting frame 82, respectively, so as to reinforce the supporting frame 82.
Example 3
As shown in fig. 3, the difference from the embodiment 1 and the embodiment 2 is that the supporting frame 82 is hinged to the second base 81, the telescopic rod 9 is disposed on the supporting member, the end of the telescopic rod 9 is hinged to the second base 81, the output end of the piston rod is hinged to the supporting frame 82, the telescopic rod 9 is used to stably reinforce and adjust the tilt angle of the supporting frame 82, the length of the piston rod in the telescopic rod 9 is adjusted according to the actual inspection requirement, and the included angle between the supporting frame 82 and the second base 81 is further adjusted, so that the device tracks the dynamic measurement performance of the measuring instrument under the state of different tilt angles.
In addition, in all the above embodiments, the slide block 32 in the displacement component 3 is driven by the driving component 2 to perform simple harmonic motion along the linear guideway 31, and the ratio of the distance from the eccentric shaft 24 to the center of the wheel disc 23 to the length of the connecting rod 25 is less than 1/9, so as to ensure that the slide block 32 always performs simple harmonic motion, taking embodiment 1 as an example, the following description is made:
as shown in fig. 5, let a be the center of the slider 32, B be the connecting point between the eccentric shaft 24 and the connecting rod 25, O be the center of the wheel disc 23, α be the crank angle, and β be the swing angle of the connecting rod 25. R is the crank radius, L is the length of the connecting rod 25, and s is the displacement of the center A of the slider 32. When the driving part 2 moves, the slide block 32 reciprocates along the linear slide rail 31, and the crank rotates at an angular velocity ω to drive the connecting rod 25 to perform a compound motion on a plane.
As shown in fig. 5, the driving part 2 drives the slider 32 to reciprocate, and when α is equal to 0 °, the center a of the slider 32 is stopped at a point on the linear guideway 31, which is defined as a1(ii) a The wheel disc 23 starts rotating, the crank angle α starts rotating from the 0 ° position, the slider 32 starts moving, the displacement thereof changes as the crank angle α increases, and when the crank angle α becomes 180 °, the center a of the slider 32 ends at a point on the linear guide 31, which is designated as a2At this time, the displacement s of the center of the slider 32 reaches the maximum value 2R; the slider 32 is rotated from A as the wheel 23 continues to rotate from the 180 position at the alpha of the hand2To A1The displacement is gradually reduced until the center a displacement s of the slider 32 becomes 0 again when the wheel 23 rotates to the 360 ° position (i.e., the 0 ° position). During one rotation of the wheel disc 23, the displacement s of the center a of the slider 32 gradually increases from 0 to 2R and then gradually decreases to 0, and the displacement s of the center of the slider 32 repeatedly changes once according to the rule every time the wheel disc 23 rotates one rotation.
The displacement s of the center a of the slider 32 according to the above-mentioned spatial relationship is:
s＝R+L-(Rcosα+Lcosβ)
meanwhile, since it is known from the figure that Rsin α ═ lssin β, it can be obtained
If λ is R/L, we will expand the formula according to the binomial theorem to obtain:
s＝R+L-R(cosα+η0+η2cos2α+η4cos4α+η6cos6α+η8cos8α+…)
wherein:
the formula can be obtained, the displacement s of the center A of the sliding block 32 does not do simple harmonic vibration, but in the equation calculation process, the high-order term has great influence on the value, and in the field of aeroengines, the value range of lambda is 1/3.8-1/3.2 and higher than lambda4If the designed lambda is less than 1/9, then the higher lambda can be directly used2The term of (c) is reduced, and the displacement equation is approximated as s ═ R (1-cos α), so that the slider 32 is considered to vibrate in a simple harmonic manner on the linear guide 31.
Meanwhile, in order to simulate simple harmonic motion with different amplitudes, the radius of the crank structure can be adjusted by inserting the eccentric shaft 24 into different assembling holes 26 on the wheel disc 23, so that the actual requirement is met, and the detection is carried out according to the design requirement that lambda is smaller than 1/9.
In addition, the connection seat 21 and the servo motor 22, the first pedestal 71 and the connection seat 21, the long level gauge and the first pedestal 71, the level bubble 83 and the support frame 82, the second pedestal 81 and the support frame 82, and the like can be connected by bolts, and the support rod 84 and the second pedestal 81 can be connected by welding; the telescopic rod 9 can be a damping telescopic rod, the track generation module 6 can be replaced by a computer terminal, and the specific structures and the working principles of the long level, the level bubble 83, the servo motor 22, the track generation module 6, the receiver 4, the measuring instrument and the telescopic rod 9 belong to the prior art in the technical field, and are not improved in the application; meanwhile, the principle, relationship and mode of electrical connection between the trajectory generation module 6 and the servo motor 22 and the controller 5, and between the measurement instrument and the receiver 4 all belong to the prior art in the technical field, and are not improved in the application, so that the details are not repeated.
The utility model discloses novel structure, reliable and stable, constitute the crank rocker structure between drive component 2 and the displacement part 3, can drive slider 32 and the receiver 4 that is connected on slider 32 and carry out simple harmonic motion along linear slide rail 31 under servo motor 22's effect, utilize controller 5 and orbit generation module 6 to obtain the movement track curve of receiver 4 that is connected on slider 32; the receiver 4 which does simple harmonic motion along with the sliding block 32 is used for data acquisition, the acquired data are fed back to the measuring instrument for recording, the dynamic measurement precision of the measuring instrument is judged by comparing the data recorded by the measuring instrument with the motion track curve of the motion of the receiver 4, and the precision of the measuring instrument is higher if the deviation between the two is smaller; if the deviation between the two is larger, the accuracy is worse; the device has stable performance and good controllability, can acquire a large amount of data at one time, greatly saves detection time, saves a large amount of manpower and material resources, reduces detection cost and effectively improves detection efficiency; the device can provide sufficient data, has good contrast, and is convenient for comparing the actually measured data with the real data, so the detection accuracy is high; through the level gauge 72 and the level bubble 83 on the bearing part, the device can be calibrated before detection, the planeness of the first base 71 and the second base 81 in a horizontal state is ensured, the supporting frame 82 can be ensured to be in a vertical state, the interference and influence on a detection result caused by the planeness and the verticality of the device are reduced, and the detection accuracy of equipment is improved; the plurality of groups of assembling holes 26 are uniformly formed in the direction from the circle center to the edge of the wheel disc 23, so that the eccentric shaft 24 can be conveniently installed, and the distance between the eccentric shaft 24 and the center of the wheel disc 23 can be conveniently adjusted, so that the wheel disc 23 can provide rotating radiuses with different lengths, the device can simulate simple harmonic motion with different amplitudes, and the practicability of the device is improved; the inclination angle of the supporting frame 82 hinged on the second base 81 can be adjusted by adjusting the length of the piston rod of the telescopic rod 9, so that the detection range of the device is expanded, and the dynamic measurement level of the receiver 4 can be detected in the states of different inclination angles; taking embodiment 1 as an example, the specific working principle of the present invention is as follows:
1. before the device is used, an operator carries out safety check on the device to ensure that the heel part is completely connected and the use safety of the device is ensured;
2. the receiver 4, the measuring instrument, the controller 5 and the track generation module 6 are sequentially started, so that the receiver 4, the measuring instrument, the controller 5 and the track generation module 6 start to work, the controller 5 is adjusted, the controller 5 controls the driving part 2 to move, when the servo motor 22 rotates, the servo motor 22 drives the wheel disc 23 connected with the output end of the servo motor to rotate, the rotating wheel disc 23 drives the eccentric shaft 24 to rotate, the eccentric shaft 24 drives the connecting rod 25 connected with the eccentric shaft 24 to move, and the connecting rod 25 drives the displacement part 3 hinged with the end of the eccentric shaft to move;
3. the driving part 2 drives the measuring instrument connected to the displacement part 3 to perform simple harmonic motion, and the sliding block 32 slidably arranged on the linear sliding rail 31 performs reciprocating simple harmonic motion under the driving of the connecting rod 25, so that the receiver 4 connected with the sliding block 32 performs simple harmonic motion together with the sliding block 32;
4. the receiver 4 measures and acquires data of the detected target and transmits the acquired data to the measuring instrument; the controller 5 collects information of the driving part 2 which drives the receiver 4 to move, feeds the collected information back to the track generation module 6, and obtains a motion track curve of the receiver 4 by the track generation module 6;
5. and comparing the data recorded on the measuring instrument with the motion curve locus of the receiver 4, and judging and analyzing the dynamic measurement precision of the measuring instrument according to the deviation degree of the data recorded on the measuring instrument and the motion curve locus.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155172A (en) * | 2021-05-08 | 2021-07-23 | 天津大学 | Detection platform for three-dimensional dynamic measurement equipment and detection method thereof |
| CN115656906A (en) * | 2022-09-22 | 2023-01-31 | 海南电网有限责任公司电力科学研究院 | Electromagnetic detector calibration device and application method thereof |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113155172A (en) * | 2021-05-08 | 2021-07-23 | 天津大学 | Detection platform for three-dimensional dynamic measurement equipment and detection method thereof |
| CN115656906A (en) * | 2022-09-22 | 2023-01-31 | 海南电网有限责任公司电力科学研究院 | Electromagnetic detector calibration device and application method thereof |
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