CN115307601B - Measurement system and measurement method based on framework deformation height in wind power state - Google Patents
Measurement system and measurement method based on framework deformation height in wind power state Download PDFInfo
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- CN115307601B CN115307601B CN202211186988.6A CN202211186988A CN115307601B CN 115307601 B CN115307601 B CN 115307601B CN 202211186988 A CN202211186988 A CN 202211186988A CN 115307601 B CN115307601 B CN 115307601B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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Abstract
The embodiment of the application provides a measurement system and a measurement method based on the framework deformation height in a wind power state, and relates to the field of framework deformation measurement. The measurement system and the measurement method based on the framework deformation height in the wind power state comprise the following steps: skeleton, wind-tunnel, base subassembly and deformation measurement subassembly. The base component faces the windward direction of the wind tunnel, and the deformation measuring component comprises a supporting seat, a movable frame, a micro-motion driving piece, a displacement measuring piece and a pressure measuring piece. The measurement can obtain the high deformation volume that has the rib, and then judges under this wind-force state, the umbrella bone deformation volume of different positions, divides the deformation volume with the initial pressure of corresponding serial number rib, judges the anti-wind performance of this rib, adopts contact measurement's mode, reduces the influence of displacement measurement spare self elasticity to the high deformation volume of rib, and displacement sensor is located the inside of stay tube, makes it still have the effect that reduces displacement measurement spare measuring value and receive wind-force interference.
Description
Technical Field
The application relates to the technical field of water heaters, in particular to a system and a method for measuring the deformation height of a framework based on a wind power state.
Background
The deformation amount of the framework of the umbrella-shaped component under the action of wind power is related to the quality of the framework of the umbrella-shaped component, if the deformation amount of the framework is large, the umbrella framework is obviously softer, the performance of resisting the wind power is poorer, and the condition that the umbrella framework is broken easily due to the wind power occurs.
Measure the atress of its rib and wind-force under the extreme condition more of the anti-wind performance of rib among the correlation technique, the high deformation of direct measurement rib of not being convenient for and with this quality of judging the rib, if adopt direct measurement's mode need extravagant manpower, and personnel can lead to the fact the influence to wind-force, and adopt the deformation of displacement sensor direct monitoring rib, need connect displacement sensor on the rib, displacement sensor's power and wind-force to displacement sensor to the rib, all can influence the measuring value of its deformation.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the measuring system and the measuring method based on the deformation height of the framework in the wind power state adopt a contact type measuring mode, the influence of the elastic force of the displacement sensor on the deformation amount of the height of the umbrella framework is reduced, and the displacement sensor is located in the supporting tube, so that the measuring system and the measuring method based on the deformation height of the framework in the wind power state also have the effect of reducing the interference of the measured value of the displacement sensor by wind power.
In a first aspect, a system for measuring a height of a deformed skeleton in a wind state according to an embodiment of the present application includes: skeleton, wind-tunnel, base subassembly and deformation measurement subassembly.
The base component is arranged in the wind tunnel and faces the windward direction of the wind tunnel, the deformation measuring component comprises a supporting seat, a movable frame, a micro-motion driving piece, a displacement measuring piece and a pressure measuring piece, the supporting seat is fixedly connected to the base component, the lower side of the movable frame is inserted in the supporting seat in a sliding manner, the skeleton is fixed peg graft in the supporting seat, the fine motion driving piece set up in the supporting seat with between the adjustable shelf, displacement measurement spare fixed connection in the supporting seat, displacement measurement spare's measuring end set up in the adjustable shelf, pressure measurement spare equidistant set up in the adjustable shelf is peripheral, pressure measurement spare with the rib of skeleton corresponds.
According to some embodiments of the application, the base subassembly includes base plate and telescopic adjusting rod, the base plate lower extreme articulate in the wind-tunnel diapire, telescopic adjusting rod one end articulate in the base plate upper end, the telescopic adjusting rod other end articulate in the wind-tunnel diapire, the wind hole has evenly been seted up to the base plate.
According to some embodiments of this application, the supporting seat includes supporting sleeve, baffle and the tight portion of cup jointing of clamp, the baffle will the supporting sleeve falls into two spaces, fine motion driving piece bottom fixed connection in the baffle downside, fine motion driving piece upper end is passed rotate behind the baffle connect in the inner wall on supporting sleeve top, the tight portion of cup jointing fixed connection in the baffle upside.
According to some embodiments of the application, the fine motion driving piece includes driving motor, fine motion screw rod and link block, driving motor fixed connection in the baffle downside, fine motion screw rod fixed connection in the driving motor output, fine motion screw rod top rotate connect in the inner wall on support sleeve top, link block screw thread cup joint in the fine motion screw rod, link block lateral wall fixed connection in the outer wall of adjustable shelf downside.
According to some embodiments of the application, press from both sides tight cup joint portion and include the bell and spigot pipe, pinch plate, guide bar and clamp bolt, bell and spigot pipe fixed connection in the baffle upside, guide bar fixed connection in the pinch plate outer wall, the guide bar slide run through in the outer wall of bell and spigot pipe upper end, clamp bolt threaded connection in the bell and spigot pipe upper end, clamp bolt compress tightly in the pinch plate outer wall, the pinch plate compress tightly in the umbrella pole of skeleton.
According to some embodiments of the application, the guide rod is kept away from pinch-off plate one end fixedly connected with limiting plate, cup joint outer wall of tubes can block the limiting plate.
According to some embodiments of the application, the inner wall of the clamping plate is provided with a cushion pad.
According to some embodiments of the application, the outer wall of the upper end of the ferrule is provided with a reinforcing sleeve, and the clamping bolt is threaded through the reinforcing sleeve and the upper end of the ferrule.
According to some embodiments of the application, the supporting seat inner wall is provided with linear slide, linear slide with the fine motion driving piece is located the different lateral walls of supporting seat.
According to some embodiments of this application, the adjustable shelf includes movable sleeve, backup pad, support spoke and collar, backup pad fixed connection in the movable sleeve top, the support spoke evenly set up in the backup pad is peripheral, collar fixed connection in support spoke outer end, pressure measurement spare is including adjusting actuating lever, mounting panel and pressure sensor, adjust the even fixed connection of actuating lever in the periphery of collar downside, it passes to adjust the actuating lever output the collar, mounting panel fixed connection in the top of adjusting the actuating lever output, pressure sensor fixed connection in the mounting panel upside, pressure sensor with the rib bottom of skeleton corresponds.
According to some embodiments of the application, the pressure sensor is provided as a bellows-type load cell.
According to some embodiments of the application, the support spokes are provided with reinforcing ribs on the underside.
According to some embodiments of the application, the displacement measurement piece comprises a displacement sensor and a fixed plate, the displacement sensor is fixedly connected to the bottom end inside the supporting seat, the fixed plate is fixedly connected to the outer wall of the lower end of the movable sleeve, and the measuring end of the displacement sensor is fixedly connected to the fixed plate.
According to some embodiments of the application, the displacement sensor is provided as a pull-cord displacement sensor.
In a second aspect, the method for measuring the height of the framework deformation based on the wind power state according to the embodiment of the application is performed by using the system for measuring the height of the framework deformation based on the wind power state, and is characterized by comprising the following steps:
the framework is fixedly inserted in the supporting seat;
adjusting the base assembly to enable the framework to face the windward direction;
starting a micro-motion driving piece, driving the movable frame to rise by the micro-motion driving piece until the pressure measuring piece just contacts the bottom end of the umbrella rib of the framework and no value appears in the pressure measuring piece;
starting the adjusting driving rod to enable the pressure sensors on the adjusting driving rod to respectively contact the bottom ends of different umbrella ribs on the framework until no numerical value appears on the pressure sensors;
numbering the ribs on the skeleton and the corresponding pressure sensors, recording the numerical value of the displacement sensor at the moment and recording the numerical value as L 0 ；
The wind tunnel is started, the umbrella ribs of the framework deform under the action of wind power, the umbrella ribs press the pressure sensors, the stress of the bottom ends of the umbrella ribs under the wind power can be received through the pressure sensors, the pressure of the umbrella ribs with corresponding numbers is obtained through measurement of the pressure sensors, and the corresponding pressure value of each umbrella rib is recorded;
after pressure measurement, start the fine motion driving piece, the fine motion driving piece drives the drop of adjustable shelf, and pressure sensor reduces gradually the holding power of rib, and after the pressure of a certain rib in the serial number disappeared, numerical value L after the whereabouts of adjustable shelf was obtained through displacement sensor measurement 1 Further judge the height deformation quantity L of the umbrella rib with the number under the action of the wind power 0 －Ｌ 1 ；
Continuously dropping the movable frame until the pressure of the umbrella rib with the next number to the pressure sensor disappears, and continuously measuring the height deformation quantity of the umbrella rib with the number under the action of the wind power according to the method;
the height deformation of all umbrella ribs can be obtained through sequential measurement, the umbrella rib deformation at different positions in the wind power state is further judged, and the wind resistance performance of the umbrella ribs is judged by dividing the deformation by the initial pressure of the umbrella ribs with corresponding numbers.
The beneficial effect of this application is: the framework is fixedly inserted in the supporting seat, the base component is adjusted, the framework is enabled to face the windward direction, the micro-motion driving piece is started, the micro-motion driving piece drives the movable frame to rise, the pressure measuring piece just contacts the bottom end of the rib of the framework, innumerable values of the pressure measuring piece are displayed, the wind tunnel is started, the rib of the framework deforms under the action of wind power, the rib presses the pressure measuring piece, the stress of the bottom end of the rib under the wind power can be received through the pressure measuring piece, after the pressure measurement, the micro-motion driving piece is started, the movable frame is driven to fall through the micro-motion driving piece, the supporting force of the pressure measuring piece on the rib is gradually reduced, after the pressure of one rib in the number disappears, the falling height of the movable frame is obtained through the measurement of the displacement measuring piece, the movable frame continues to fall, the pressure of the rib of the next number on the pressure measuring piece disappears, the height deformation of the rib under the action of the wind power is continuously measured according to the upper method, the height deformation quantity of the rib can be obtained through the sequential measurement, and then the umbrella rib shape variables at different positions are judged, the initial pressure of the rib is reduced, and the influence of the displacement measurement on the displacement sensor in the wind power measurement is reduced, and the measurement effect of the displacement sensor of the supporting tube is reduced.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic perspective view of a measurement system based on the height of a deformed framework in a wind state according to an embodiment of the present application;
FIG. 2 is a perspective view of a base assembly according to an embodiment of the present application;
FIG. 3 is a schematic perspective view of a strain gauge assembly according to an embodiment of the present application;
FIG. 4 is a schematic perspective view of a support base according to an embodiment of the present disclosure;
FIG. 5 is a schematic perspective view of a micro-motion drive according to an embodiment of the present application;
FIG. 6 is a perspective view of a clamp socket according to an embodiment of the present application;
FIG. 7 is a schematic perspective view of a movable frame according to an embodiment of the present application;
fig. 8 is a schematic perspective view of a displacement measuring member according to an embodiment of the present application.
Icon: 100-a wind tunnel; 200-a base assembly; 210-a base plate; 220-telescopic adjusting rod; 230-wind holes; 300-a deformation measuring component; 310-a support base; 311-a support sleeve; 312-a separator; 313-a clamping socket; 3131-a ferrule; 3132-a clamping plate; 3133-a guide rod; 3134-a limiting plate; 3135-a reinforcing sleeve; 3136-a clamping bolt; 320-a movable frame; 321-an active cannula; 322-a support plate; 323-supporting spokes; 324-a mounting ring; 325-reinforcing ribs; 330-micro-motion drive; 331-a drive motor; 332-micro-motion screw rod; 333-connecting the slide block; 340-a displacement measuring member; 341-displacement sensor; 342-a fixation plate; 350-a pressure measurement member; 351-adjusting the drive rod; 352-mounting plate; 353-a pressure sensor; 360-linear slide rail.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.
The following describes a measurement system and a measurement method based on the deformation height of a framework under a wind power state according to an embodiment of the application with reference to the accompanying drawings.
Referring to fig. 1 to 8, a system for measuring a height of a deformed skeleton based on a wind force according to an embodiment of the present application includes: a skeleton, a wind tunnel 100, a base assembly 200, and a deformation measuring assembly 300.
Referring to fig. 2, the base assembly 200 is disposed in the wind tunnel 100, and the base assembly 200 faces the windward direction of the wind tunnel 100. Base subassembly 200 includes base plate 210 and telescopic adjusting rod 220, and base plate 210 lower extreme articulates in wind-tunnel 100 diapire, and telescopic adjusting rod 220 one end articulates in base plate 210 upper end, and the telescopic adjusting rod 220 other end articulates in wind-tunnel 100 diapire, and wind hole 230 has evenly been seted up to base plate 210. When the skeleton is adjusted to face the windward direction of the wind tunnel 100, the telescopic adjusting rod 220 is started, and the telescopic adjusting rod 220 drives the angle change of the base plate 210, so as to drive the skeleton to face the windward direction of the wind tunnel 100.
Referring to fig. 3, the deformation measuring assembly 300 includes a supporting base 310, a movable frame 320, a micro-motion driving element 330, a displacement measuring element 340 and a pressure measuring element 350, the supporting base 310 is fixedly connected to the base assembly 200, the lower side of the movable frame 320 is slidably inserted into the supporting base 310, the frame is fixedly inserted into the supporting base 310, the micro-motion driving element 330 is disposed between the supporting base 310 and the movable frame 320, the displacement measuring element 340 is fixedly connected into the supporting base 310, a measuring end of the displacement measuring element 340 is disposed on the movable frame 320, the pressure measuring element 350 is disposed around the movable frame 320 at equal intervals, and the pressure measuring element 350 corresponds to ribs of the frame. The framework is fixedly inserted in the supporting seat 310, the base component 200 is adjusted to enable the framework to face the windward direction, the micro-motion driving piece 330 is started, the micro-motion driving piece 330 drives the movable frame 320 to rise until the pressure measuring piece 350 just contacts the bottom end of the umbrella rib of the framework and innumerable values of the pressure measuring piece 350 appear, the wind tunnel is started, the umbrella rib of the framework deforms under the action of wind force, the umbrella rib presses the pressure measuring piece 350, the stress of the bottom end of the umbrella rib under the wind force can be received through the pressure measuring piece 350, after the pressure measurement, the micro-motion driving piece 330 is started, the micro-motion driving piece 330 drives the movable frame 320 to fall, the supporting force of the pressure measuring piece 350 on the umbrella rib is gradually reduced, and when the pressure of one umbrella rib in the serial number disappears, the falling height of the movable frame 320 is obtained through the measurement of the displacement measuring piece 340, the movable frame 320 continuously falls until the pressure of the next numbered umbrella rib to the pressure measuring part 350 disappears, the height deformation quantity of the numbered umbrella rib under the action of the wind power is continuously measured according to the method above, the height deformation quantity of the umbrella rib can be obtained through measurement in sequence, the umbrella rib deformation quantity of different positions in the wind power state is further judged, the deformation quantity is divided by the initial pressure of the corresponding numbered umbrella rib, the wind resistance performance of the umbrella rib is judged, the influence of the self elasticity of the displacement measuring part 340 on the height deformation quantity of the umbrella rib is reduced by adopting a contact measurement mode, and the displacement measuring part 340 is positioned in the supporting tube, so that the effect of reducing the wind power interference on the measured value of the displacement measuring part 340 is achieved. The inner wall of the support seat 310 is provided with a linear slide rail 360, and the linear slide rail 360 and the micro-motion driving element 330 are located on different side walls of the support seat 310. The linear slide rail 360 is used for guiding the movable frame 320 to slide along the supporting seat 310 when the micro-motion driving element 330 is actuated.
Referring to fig. 4, the supporting seat 310 includes a supporting sleeve 311, a partition 312 and a clamping sleeve portion 313, the partition 312 divides the supporting sleeve 311 into two spaces, the bottom end of the micro driving element 330 is fixedly connected to the lower side of the partition 312, the upper end of the micro driving element 330 passes through the partition 312 and then is rotatably connected to the inner wall of the top end of the supporting sleeve 311, and the clamping sleeve portion 313 is fixedly connected to the upper side of the partition 312. The support sleeve 311 facilitates the displacement measuring part 340 to be relatively isolated from the space, reduces the influence of external wind on the displacement measuring part 340, facilitates the installation of the micro-motion driving part 330 by the partition plate 312, and facilitates the installation and fixation of the framework by the clamping and sleeving part 313.
Referring to fig. 5, the fine-motion driving member 330 includes a driving motor 331, a fine-motion screw 332 and a connecting slider 333, the driving motor 331 is fixedly connected to the lower side of the partition 312, the fine-motion screw 332 is fixedly connected to the output end of the driving motor 331, the top end of the fine-motion screw 332 is rotatably connected to the inner wall of the top end of the supporting sleeve 311, the connecting slider 333 is in threaded sleeve connection with the fine-motion screw 332, and the side wall of the connecting slider 333 is fixedly connected to the outer wall of the lower side of the movable frame 320. When the height of the movable frame 320 is adjusted, the driving motor 331 is started, the driving motor 331 drives the fine motion screw 332 to rotate, the fine motion screw 332 drives the connecting slide block 333 to move through a screw transmission principle, and the connecting slide block 333 drives the movable frame 320 to slide along the support sleeve 311.
Referring to fig. 6, the clamping coupling portion 313 includes a sleeve 3131, a clamping plate 3132, a guide rod 3133 and a clamping bolt 3136, the sleeve 3131 is fixedly connected to the upper side of the partition 312, the guide rod 3133 is fixedly connected to the outer wall of the clamping plate 3132, the guide rod 3133 slidably penetrates the outer wall of the upper end of the sleeve 3131, the clamping bolt 3136 is threadedly connected to the upper end of the sleeve 3131, the clamping bolt 3136 is pressed against the outer wall of the clamping plate 3132, and the clamping plate 3132 is pressed against the umbrella rod of the frame. When the framework is installed, an umbrella rod of the framework is inserted into the sleeve 3131, the clamping bolt 3136 is screwed, the clamping bolt 3136 pushes the clamping plate 3132 to gradually press the umbrella rod, the guide rod 3133 on the clamping plate 3132 slides along the outer wall of the upper end of the sleeve 3131, the umbrella rod is pressed and fixed through the clamping plate 3132, and then the purpose of fixing the framework is achieved. A limiting plate 3134 is fixedly connected to one end of the guiding rod 3133 away from the clamping plate 3132, and the limiting plate 3134 can be blocked by the outer wall of the sleeve 3131. By means of the stop plate 3134, the sliding of the guide rod 3133 inside the ferrule 3131, which results in the clamping plate 3132 falling, is reduced. The inner wall of the clamping plate 3132 is provided with a buffer pad. The pressure loss of the clamping plate 3132 to the umbrella rod is reduced by the buffer cushion. A reinforcing bush 3135 is provided on an outer wall of an upper end of the ferrule 3131, and a clamping bolt 3136 is threaded through the reinforcing bush 3135 and the upper end of the ferrule 3131. The mounting of the clamping bolt 3136 is facilitated by the reinforcing bush 3135.
Referring to fig. 7, in the related art, the measurement system based on the deformed height of the frame in the wind power state measures the initial pressure of the umbrella ribs through the pressure measuring parts 350, but due to the influence of the manufacture and installation of the umbrella ribs, the bottom end of each umbrella rib cannot be guaranteed to be in the same plane, and there is a height error, and when one of the pressure measuring parts 350 measures the bottom end of the umbrella rib just touched, the rest umbrella ribs may not touch or already abut against the pressure measuring parts 350, so that it is inconvenient to maintain the state that each pressure measuring part 350 just touches the bottom end of the umbrella rib and does not generate pressure.
Therefore, the inventor has long-term practical research to solve the technical problem. Specifically, the movable frame 320 includes a movable sleeve 321, a support plate 322, a support spoke 323 and a mounting ring 324, the support plate 322 is fixedly connected to the top end of the movable sleeve 321, the support spoke 323 is uniformly arranged on the periphery of the support plate 322, the mounting ring 324 is fixedly connected to the outer end of the support spoke 323, the pressure measuring part 350 includes an adjusting drive rod 351, a mounting plate 352 and a pressure sensor 353, the adjusting drive rod 351 is uniformly and fixedly connected to the periphery of the lower side of the mounting ring 324, the output end of the adjusting drive rod 351 penetrates through the mounting ring 324, the mounting plate 352 is fixedly connected to the top end of the output end of the adjusting drive rod 351, the pressure sensor 353 is fixedly connected to the upper side of the mounting plate 352, and the pressure sensor 353 corresponds to the bottom end of the rib of the framework. The micro-motion driving component 330 is started, the micro-motion driving component 330 drives the movable frame 320 to rise until one of the pressure measurement components 350 just contacts the bottom end of an umbrella rib of the skeleton and innumerable values of the pressure measurement components 350 are displayed, then the corresponding adjusting driving rod 351 is started, the adjusting driving rod 351 drives the pressure sensors 353, each pressure sensor 353 respectively contacts the bottom end of different umbrella ribs on the skeleton and innumerable values of the pressure sensors 353 are displayed, and further, the state that each pressure sensor 353 just contacts the bottom end of the umbrella rib and does not generate pressure is kept, the influence of the umbrella ribs on manufacturing and installation is reduced, the bottom end of each umbrella rib cannot be guaranteed to be in the same plane, height errors exist, and the situation that the measurement errors are large is caused. The pressure sensor 353 is provided as a bellows type load sensor. The bellows weighing sensor has the advantages of small structure, low height, good unbalance loading resistance, selection of two types of glue sealing and welding sealing, full stainless steel material and corrosion resistance. The support spokes 323 are provided with reinforcing ribs 325 on the lower side. The strength of the supporting spokes 323 can be enhanced by the reinforcing ribs 325, and the occurrence of large measurement errors caused by the deformation of the supporting spokes 323 of the pressure sensor 353 is reduced.
Referring to fig. 8, the displacement measuring unit 340 includes a displacement sensor 341 and a fixing plate 342, the displacement sensor 341 is fixedly connected to the bottom end of the inside of the supporting base 310, the fixing plate 342 is fixedly connected to the outer wall of the lower end of the movable sleeve 321, and the measuring end of the displacement sensor 341 is fixedly connected to the fixing plate 342. When the movable sleeve 321 slides along the supporting seat 310, the fixing plate 342 moves along with the movable sleeve, so as to drive the position of the measuring end of the displacement sensor 341 to change, and the deformation height of the bottom end of the umbrella rib of the framework is measured by measuring the height position change of the fixing plate 342. The displacement sensor 341 is provided as a pull cord displacement sensor. The pull rope displacement sensor is a delicate structure of a linear displacement sensor, fully combines the advantages of an angle sensor and the advantages of the linear displacement sensor, and is a sensor with small installation size, compact structure, large measurement stroke and high precision, and the stroke is different from hundreds of millimeters to dozens of meters.
It should be noted that, according to the embodiment of the present application, there is further provided a method for measuring a height of a skeleton deformed in a wind power state, which is performed by using a system for measuring a height of a skeleton deformed in a wind power state, including the following steps:
the framework is fixedly inserted into the supporting seat 310, the umbrella rod of the framework is inserted into the sleeve 3131, the clamping bolt 3136 is screwed, the clamping bolt 3136 pushes the clamping plate 3132 to gradually press the umbrella rod, the guide rod 3133 on the clamping plate 3132 slides along the outer wall of the upper end of the sleeve 3131, and the umbrella rod is pressed and fixed through the clamping plate 3132;
adjusting the base assembly 200, starting the telescopic adjusting rod 220, and driving the angle change of the base plate 210 by the telescopic adjusting rod 220 so as to drive the framework to face the windward direction of the wind tunnel 100 and enable the framework to face the windward direction;
the micro-motion driving piece 330 is started, the micro-motion driving piece 330 drives the movable frame 320 to rise, the driving motor 331 is started, the driving motor 331 drives the micro-motion screw rod 332 to rotate, the micro-motion screw rod 332 drives the connecting slide block 333 to move through the screw thread transmission principle, the connecting slide block 333 drives the movable frame 320 to slide along the support sleeve 311 until the pressure measuring piece 350 just contacts the bottom end of the umbrella rib of the skeleton and innumerable values of the pressure measuring piece 350 appear;
starting the adjusting driving rod 351 to enable the pressure sensors 353 on the adjusting driving rod 351 to respectively contact the bottom ends of different umbrella ribs on the skeleton until countless values of the pressure sensors 353 appear;
the ribs on the skeleton and the corresponding pressure sensors 353 are numbered, and the value of the displacement sensor 341 at the moment is recorded as L 0 ；
The wind tunnel is started, the ribs of the framework deform under the action of wind power, the ribs press the pressure sensor 353, the stress of the bottom end of each rib under the wind power can be received through the pressure sensor 353, the pressure of the corresponding numbered rib is obtained through measurement of the pressure sensor 353, and the corresponding pressure value of each rib is recorded;
after pressure measurement, start fine motion driving piece 330, fine motion driving piece 330 drives adjustable shelf 320 whereabouts, and pressure sensor 353 reduces the holding power of rib gradually to the pressure of a certain rib in the serial number back that disappears, measures through displacement sensor 341 and getsDrop height L to the movable frame 320 1 Further judge the height deformation quantity L of the umbrella rib with the number under the action of the wind power 0 －Ｌ 1 ；
The movable frame 320 is continuously dropped until the pressure of the umbrella rib with the next number to the pressure sensor 353 disappears, and the height deformation quantity of the umbrella rib with the number under the action of the wind power is continuously measured according to the method above;
the height deformation quantity of the umbrella ribs can be obtained through sequential measurement, the umbrella rib deformation quantity at different positions in the wind power state is further judged, and the wind resistance performance of the umbrella ribs is judged by dividing the deformation quantity by the initial pressure of the umbrella ribs with corresponding numbers.
Specifically, the working principle of the measuring system and the measuring method based on the deformation height of the framework in the wind power state is as follows: inserting the umbrella rod of the framework into the sleeve 3131, screwing the clamping bolt 3136, the clamping bolt 3136 pushing the clamping plate 3132 to gradually press the umbrella rod, the guiding rod 3133 on the clamping plate 3132 sliding along the outer wall of the upper end of the sleeve 3131, pressing and fixing the umbrella rod through the clamping plate 3132, thereby achieving the purpose of fixing the framework, starting the telescopic adjusting rod 220, the telescopic adjusting rod 220 driving the angle change of the base plate 210, further driving the framework towards the windward direction of the wind tunnel 100, starting the driving motor 331, the driving motor 331 driving the micro-motion screw rod 332 to rotate, through the screw transmission principle, the micro-motion screw rod 332 driving the connecting slide block 333 to move, the connecting slide block 333 driving the movable frame 320 to slide along the supporting sleeve 311, until the pressure sensor just contacts the bottom end of the umbrella rib of the framework and countless values of the pressure sensor 353 appear, starting the wind tunnel, the umbrella ribs of the framework deforming under the action of wind force, the umbrella ribs pressing the pressure sensor 353, the stress of the bottom ends of the umbrella ribs under the wind power can be received through the pressure sensor 353, after pressure measurement, the micro-motion driving piece 330 is started, the micro-motion driving piece 330 drives the movable frame 320 to fall, the supporting force of the pressure sensor 353 to the umbrella ribs is gradually reduced, after the pressure of one umbrella rib in a number disappears, the falling height of the movable frame 320 is obtained through measurement of the displacement sensor 341, the movable frame 320 continuously falls until the pressure of the next umbrella rib in the number to the pressure sensor 353 disappears, the height deformation quantity of the numbered umbrella ribs under the wind power is continuously measured according to the upper method, the height deformation quantity of the umbrella ribs can be obtained through sequential measurement, the umbrella rib deformation quantity at different positions under the wind power state is further judged, the initial pressure of the corresponding numbered umbrella ribs is divided by the deformation quantity, the wind resistance performance of the umbrella ribs is judged, and the influence of the self elasticity of the displacement sensor 341 on the height deformation quantity of the umbrella ribs is reduced by adopting a contact measurement mode, the displacement sensor 341 is located inside the support tube, which also has the effect of reducing the interference of the wind on the measurement value of the displacement sensor 341.
The micro-motion driving part 330 is started, the micro-motion driving part 330 drives the movable frame 320 to rise until one of the pressure measurement parts 350 just contacts the bottom end of an umbrella rib of the skeleton and the pressure measurement part 350 has a plurality of values, then the corresponding adjusting driving rod 351 is started, the adjusting driving rod 351 drives the pressure sensors 353, each pressure sensor 353 respectively contacts the bottom end of different umbrella ribs on the skeleton and the pressure sensors 353 have a plurality of values to appear, and further, the state that each pressure sensor 353 just contacts the bottom end of the umbrella rib and does not generate pressure is kept, the influence of the umbrella ribs on manufacturing and installation is reduced, the bottom end of each umbrella rib cannot be guaranteed to be in the same plane, height errors exist, and the situation that the measurement errors are large is caused.
It should be noted that the specific model specifications of the driving motor 331, the bellows type load sensor and the pull rope displacement sensor need to be determined by model selection according to the actual specification of the device, and the specific model selection calculation method adopts the prior art, so detailed burdens are not needed.
The power supply and the principle of the driving motor 331, the bellows type load sensor and the pull rope displacement sensor will be apparent to those skilled in the art and will not be described in detail herein.
The above embodiments are merely examples of the present application and are not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (10)
1. Measurement system based on skeleton deformation height under wind-force state includes: the framework is characterized by also comprising
A wind tunnel;
the base assembly is arranged in the wind tunnel and faces the windward direction of the wind tunnel;
deformation measuring component, deformation measuring component includes supporting seat, adjustable shelf, fine motion driving piece, displacement measurement spare and pressure measurement spare, supporting seat fixed connection in on the base subassembly, the adjustable shelf downside slide peg graft in the supporting seat, the skeleton is fixed peg graft in the supporting seat, fine motion driving piece set up in the supporting seat with between the adjustable shelf, displacement measurement spare fixed connection in the supporting seat, the measurement end of displacement measurement spare set up in the adjustable shelf, pressure measurement spare equidistant set up in the adjustable shelf is peripheral, pressure measurement spare with the rib of skeleton corresponds.
2. The system for measuring the height of a deformed framework under a wind power state according to claim 1, wherein the base assembly comprises a base plate and a telescopic adjusting rod, the lower end of the base plate is hinged to the bottom wall of the wind tunnel, one end of the telescopic adjusting rod is hinged to the upper end of the base plate, the other end of the telescopic adjusting rod is hinged to the bottom wall of the wind tunnel, and wind holes are uniformly formed in the base plate.
3. The system for measuring the deformation height of the framework under the wind power state as claimed in claim 1, wherein the supporting seat comprises a supporting sleeve, a partition plate and a clamping sleeve connection part, the partition plate divides the supporting sleeve into two spaces, the bottom end of the micro-motion driving member is fixedly connected to the lower side of the partition plate, the upper end of the micro-motion driving member passes through the partition plate and then is rotatably connected to the inner wall of the top end of the supporting sleeve, and the clamping sleeve connection part is fixedly connected to the upper side of the partition plate.
4. The system for measuring the height of a deformed framework under a wind power state according to claim 3, wherein the micro-motion driving member comprises a driving motor, a micro-motion screw and a connecting slide block, the driving motor is fixedly connected to the lower side of the partition plate, the micro-motion screw is fixedly connected to the output end of the driving motor, the top end of the micro-motion screw is rotatably connected to the inner wall of the top end of the supporting sleeve, the connecting slide block is in threaded sleeve connection with the micro-motion screw, and the side wall of the connecting slide block is fixedly connected to the outer wall of the lower side of the movable frame.
5. The system for measuring the height of deformation of a framework under a wind power state according to claim 3, wherein the clamping sleeve comprises a sleeve, a clamping plate, a guide rod and a clamping bolt, the sleeve is fixedly connected to the upper side of the partition, the guide rod is fixedly connected to the outer wall of the clamping plate, the guide rod penetrates through the outer wall of the upper end of the sleeve in a sliding manner, the clamping bolt is in threaded connection with the upper end of the sleeve, the clamping bolt is pressed against the outer wall of the clamping plate, and the clamping plate is pressed against the umbrella rod of the framework.
6. The system for measuring the deformation height of the framework under the wind power state according to claim 5, wherein a limiting plate is fixedly connected to one end, away from the clamping plate, of the guide rod, and the outer wall of the sleeve pipe can block the limiting plate.
7. The system for measuring the deformation height of the framework under the wind power state as claimed in claim 5, wherein the inner wall of the clamping plate is provided with a cushion pad.
8. The system for measuring the deformation height of the framework under the wind power state as claimed in claim 5, wherein a reinforcing sleeve is arranged on the outer wall of the upper end of the sleeve, and the clamping bolt is threaded through the reinforcing sleeve and the upper end of the sleeve.
9. The system for measuring the deformation height of the framework under the wind power state as claimed in claim 1, wherein the inner wall of the supporting seat is provided with a linear slide rail, and the linear slide rail and the micro-motion driving element are located on different side walls of the supporting seat.
10. The method for measuring the deformation height of the framework under the wind power state is carried out by using the system for measuring the deformation height of the framework under the wind power state as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps of:
the framework is fixedly inserted in the supporting seat;
adjusting the base assembly to enable the framework to face the windward direction;
starting the micro driving piece, and driving the movable frame to rise by the micro driving piece until the pressure measuring piece just contacts the bottom end of the umbrella rib of the framework and innumerable values of the pressure measuring piece appear;
numbering the ribs on the skeleton and the corresponding pressure measuring pieces, and recording the value of the pressure measuring pieces at the moment as L 0 ；
The wind tunnel is opened, the umbrella ribs of the framework deform under the action of wind power, the umbrella ribs press the pressure measuring part, the stress of the bottom ends of the umbrella ribs under the wind power can be received through the pressure measuring part, the pressure of the umbrella ribs with corresponding numbers is obtained through measurement of the pressure measuring part, and the corresponding pressure value of each umbrella rib is recorded;
after pressure measurement, start the fine motion driving piece, the fine motion driving piece drives the drop of adjustable shelf, and the holding power of pressure measurement to the rib reduces gradually, and after the pressure of a certain rib in the serial number disappeared, numerical value L after the whereabouts of adjustable shelf was obtained through displacement measurement piece measurement 1 Further judge the height deformation quantity L of the umbrella rib with the number under the action of the wind power 0 －Ｌ 1 ；
Continuously dropping the movable frame until the pressure of the umbrella rib with the next number to the pressure measuring piece disappears, and continuously measuring the height deformation quantity of the umbrella rib with the number under the action of the wind power according to the method;
the height deformation of all umbrella ribs can be obtained by measuring in sequence, and then the umbrella rib deformation at different positions under the wind power state is judged, and the wind resistance performance of the umbrella ribs is judged by dividing the deformation by the initial pressure value of the umbrella ribs with corresponding numbers.
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