CN114646450A - Balance loading device with double fixed support parts - Google Patents
Balance loading device with double fixed support parts Download PDFInfo
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- CN114646450A CN114646450A CN202210269144.1A CN202210269144A CN114646450A CN 114646450 A CN114646450 A CN 114646450A CN 202210269144 A CN202210269144 A CN 202210269144A CN 114646450 A CN114646450 A CN 114646450A
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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
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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Abstract
The invention belongs to the technical field of multi-component aerodynamic load measuring sensors, and discloses a balance loading device with double fixed support parts. The double-fixed support component balance loading device is of a steel piece combined structure and comprises a connecting block, a sliding block and a calibration support rod; the connecting block and the sliding block are sequentially connected; the calibration support rod is fixedly connected with the balance through a U-shaped device and is fixedly connected with the calibration mechanism through a connecting cone; the connecting block is fixedly connected with the balance through positioning by a pin I, tensioning by a screw I, positioning by a positioning hole I or a positioning hole II and tensioning by a screw II; the slide block is fixedly connected with the loading main body through side positioning and tightening of a nut and a bolt. The loading main body is provided with a vertical upward tip, and the balance is loaded through the tip. The double-fixed-support-component balance loading device realizes static calibration of the double-fixed-support-component balance and provides guarantee for realizing the force measurement of the double-fixed-support-component balance.
Description
Technical Field
The invention belongs to the technical field of multi-component aerodynamic load measurement sensors, and particularly relates to a balance loading device with double fixed support parts.
Background
In a high-speed wind tunnel test with a scaled model component force measurement test, a single-fixed-support component balance is mostly adopted at present, namely one end of a component balance loading device is fixed. With the increase of the size of the high-speed wind tunnel, in order to reduce the measurement error of the scaling model and improve the measurement uncertainty of the aircraft model, a wind tunnel test of a full-size test model is provided. In order to accurately measure the aerodynamic load of a double-fixed-support component to be measured of an aircraft in a wind tunnel test and realize the static calibration of a double-fixed-support component balance with full size, double fixation and large fixed end span, a corresponding double-fixed-support component balance loading device must be developed.
Disclosure of Invention
The invention aims to provide a balance loading device with double fixed support parts.
The invention discloses a double-fixed support component balance loading device which is characterized in that the double-fixed support component balance loading device is of a steel piece combined structure and comprises a loading main body, a sliding block, a connecting block and a calibration support rod;
the loading main body is of a square flat plate structure, the four corners are respectively provided with a vertically upward tip, the tips are used for hoisting the tray to load weights for the balance, and the loading main body is provided with parallel sliding grooves;
the sliding block is an I-shaped block body, the upper part of the sliding block is an upper flat plate, and the lower part of the sliding block is a lower flat plate; the upper surface of the upper flat plate is provided with a positioning block, and the upper flat plate is also provided with a screw hole II; a through hole I matched with the sliding groove is formed in the lower flat plate, a bolt sequentially penetrates through the sliding groove and the through hole I from bottom to top and is screwed down through a nut, and the sliding block is fixed on the upper surface of the loading main body;
the connecting block is a C-shaped block body with a C-shaped through groove, in a longitudinal loading state, the upper surface and the lower surface of the C-shaped block body are horizontal planes, the side surfaces of the C-shaped block body are vertical planes, and the inner upper surface and the inner lower surface of the C-shaped through groove are horizontal planes; the free end of the balance is clamped in the C-shaped through groove, a pin hole I and a screw hole I are arranged on a C-shaped surface of the C-shaped block body, a pin I penetrating through the pin hole I is positioned, a screw I penetrating through the screw hole I is screwed, and the free end of the balance is positioned and fixed in the C-shaped through groove; the lower surface and the side surface of the C-shaped block body are respectively provided with a positioning hole II and a positioning hole I which are matched with the positioning block, and the lower surface and the side surface are also respectively provided with a threaded hole II and a threaded hole III; in a longitudinal loading state, when the lower surface of the connecting block is attached to the upper surface of the upper flat plate of the sliding block, the positioning block is inserted into the positioning hole II, and the screw II is screwed into the threaded hole II from bottom to top to fixedly connect the sliding block and the connecting block; in a transverse loading state, when the side face of the connecting block is attached to the upper surface of the upper flat plate of the sliding block, the positioning block is inserted into the positioning hole I, and the screw II is screwed into the threaded hole III from bottom to top to fixedly connect the sliding block and the connecting block;
the calibration support rod consists of a U-shaped device, an equal straight section and a connecting cone which are connected in sequence; two ends of the U-shaped device are provided with U-shaped grooves matched with lugs at two ends of the balance, the lugs are inserted into the U-shaped grooves, and two groups of pin holes II matched with through holes in the lugs are formed in the U-shaped grooves; the group of pin holes II are used for the condition that the lower surface of the connecting block is attached to the upper surface of the upper flat plate of the sliding block in a longitudinal loading state; the other group of pin holes II are used for the condition that the side surface of the connecting block is attached to the upper surface of the upper flat plate of the sliding block in a transverse loading state; the lug is fixed through a pin II penetrating through a through hole II on two sides of the U-shaped groove and a pin hole II, and further a balance is fixed; a threaded hole IV is formed in the central axis of the connecting cone, and the connecting cone is fixedly connected with the calibrating mechanism by tightening the threaded hole IV through a special bolt.
Furthermore, a gasket is installed on the bolt, and the gasket is compressed when the nut is screwed down.
Furthermore, the upper surface of the loading main body is provided with a reference surface I.
Furthermore, the upper surface of the upper flat plate of the sliding block is provided with a reference surface VI, and the lower surface of the lower flat plate is provided with a reference surface VII.
Furthermore, the upper surface of the connecting block is provided with a reference surface III, the side surface of the connecting block is provided with a reference surface II, the lower surface of the connecting block is provided with a reference surface V, and the C-shaped through groove is internally provided with a reference surface IV.
Further, a reference surface VIII is arranged on the upper surface of the U-shaped device.
The balance loading device with the double fixed support parts has the following characteristics:
1. and the two ends are fixed. At present, most of component balances adopt a single-side fixed support mode, and in order to meet the calibration requirement of the balance, the double-fixed-support component balance loading device adopts a double-side fixed support mode. The two ends of the connecting part of the calibration support rod and the balance are provided with U-shaped devices which are respectively and fixedly provided with two lug pieces of the balance.
Setting of the U-shaped device. And a U-shaped device is arranged on the calibration supporting rod. Two groups of pin holes II are arranged on the U-shaped device. Two lugs of the balance can be inserted into the U-shaped device, and the balance is positioned and fixed through the two groups of pin holes II, so that the static calibration of the balance in the longitudinal direction and the transverse direction is realized. And a reference surface VIII is arranged on the calibration support rod, so that the calibration state of the balance can be ensured.
3. The connecting block can realize bidirectional calibration under the condition that the connecting block is not assembled with the balance. A reference surface V, a reference surface II, a reference surface III and a reference surface IV are arranged on the connecting block, and the calibration state of the balance can be ensured through the position relation of the reference surfaces; a positioning hole II and a threaded hole II are formed in the reference surface V, positioning is achieved through the positioning hole II, a screw II is fixedly connected with the sliding block, and the balance is loaded with axial force, pitching moment and yawing moment through the tip, so that longitudinal static calibration of the balance can be achieved; a positioning hole I and a threaded hole III are formed in the datum plane II, positioning is achieved through the positioning hole I, a screw II is fixedly connected with the sliding block, loading of lateral force and rolling torque is conducted on the balance through the tip, and transverse static calibration of the balance can be achieved.
4. The slider can realize two-way calibration under the condition of not being disassembled and assembled with the loading main body. Through the first group of pin holes II of U type device, adopt round pin II, will calibrate branch and balance and fix. A reference surface VI and a reference surface VII are arranged on the sliding block, a reference surface I is arranged on the loading main body, and the calibration state of the balance can be ensured through the position relation of the reference surfaces. A positioning block and a screw hole II are arranged on the datum plane VI, the datum plane VI is positioned through the positioning block and the positioning block, and the sliding block is fixedly connected with the connecting block through a screw II; be provided with the through-hole I that matches with the spout on the slider, the bolt is from supreme spout, through-hole I of passing in proper order down, and the rethread nut is screwed up, fixes the slider at the upper surface of loading main part. The balance is loaded by the tip through axial force, pitching moment and yawing moment, and longitudinal static calibration of the balance can be realized. And detaching a screw II, simultaneously detaching the sliding block and the loading main body, detaching a pin II, rotating two lug plates of the balance in a U-shaped device of the calibration support rod, fixing the balance by adopting the pin II through a second group of pin holes II of the U-shaped device, positioning by adopting a positioning hole I and a positioning block, fixedly connecting the screw II with a connecting block, and implementing the loading of lateral force, rolling moment and yawing moment on the balance through a tip under the condition that the sliding block and the loading main body are not detached, so that the transverse static calibration of the balance can be realized.
The double-fixed-support-component balance loading device realizes static calibration of the double-fixed-support-component balance and provides guarantee for realizing the force measurement of the double-fixed-support-component balance.
Drawings
FIG. 1 is a perspective view of the double support member balance loading apparatus of the present invention in a longitudinally loaded state;
FIG. 2 is a perspective view of the double support member balance loading apparatus of the present invention in a laterally loaded state;
FIG. 3 is a front view of the dual solid support component balance loading apparatus of the present invention in a longitudinally loaded state;
FIG. 4 is a top view of the dual solid support component balance loading apparatus of the present invention in a longitudinally loaded state;
FIG. 5 is a left side view of the double solid support component balance loading apparatus of the present invention in a longitudinally loaded state;
FIG. 6 is a front view of a dual solid support component balance loading unit attachment block of the present invention;
FIG. 7 is a top view of the dual solid support component balance loading unit attachment block of the present invention;
FIG. 8 is a left side view of the dual solid support component balance loading unit connection block of the present invention;
FIG. 9 is a sectional view A-A of FIG. 6;
FIG. 10 is a cross-sectional view B-B of FIG. 7;
FIG. 11 is a cross-sectional view C-C of FIG. 7;
FIG. 12 is a view from direction K of FIG. 6;
FIG. 13 is an M-directional view of FIG. 8;
FIG. 14 is a front view of the slide of the dual solid support component balance loading device of the present invention;
FIG. 15 is a left side view of the double solid support component balance loading apparatus slide of the present invention;
FIG. 16 is a top view of the double solid support component balance loading unit slide of the present invention;
FIG. 17 is a view in the direction K of FIG. 14;
FIG. 18 is a front view of a dual solid support component balance loading apparatus calibration bar of the present invention;
FIG. 19 is a top view of a dual solid support component balance loading apparatus calibration bar of the present invention;
fig. 20 is a left side view of the dual solid support component balance loading apparatus calibration bar of the present invention.
In the figure, 1. loading the body; 2. a reference surface I; 3. a threaded hole III; 4. a positioning hole I; 5. a reference plane II; 6. a reference surface III; 7. a gasket; 8. a nut; 9. a bolt; 10. a slider; 11. connecting blocks; 12. a screw I; 13. a pin I; 14. a balance; 15. a pin hole II; 16. a pin II; a U-shaped device; 18. a reference plane VIII; 19. a tip; 20. an equal straight section; 21. a connecting cone; 22. a screw hole I; 23. a screw hole II; 24. a reference plane V; 25. a threaded hole IV; 26. a reference plane IV; 27. positioning blocks; 28. a screw II; 29. a pin hole I; 30. a threaded hole II; 31. a positioning hole II; 32. a datum plane VI; 33. a reference surface VII; 34. a through hole I; 35. a chute; 36. and a through hole II.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
The design load requirement of the embodiment of the double-solid-support part balance loading device of the invention is as follows: the axial force X component is 3200N, the pitching moment Mz component is 200N.m, the lateral force Z component is 3500N, the rolling moment Mx component is 250N.m, and the yawing moment My component is 90 N.m. The static calibration uncertainty is better than 3%.
As can be seen from fig. 1, 2, 3: the double-fixed support component balance loading device is of a steel piece combined structure and comprises a loading main body 1, a connecting block 11, a sliding block 10 and a calibration support rod; the connecting block 11, the sliding block 10 and the loading main body 1 are sequentially connected; the calibration support rod consists of a U-shaped device 17, an equal straight section 20 and a connecting cone 21 which are connected in sequence; the calibration support rod is positioned and fixed with the balance 14 through four pin holes II 15 at the position of the U-shaped device 17 by four pins II 16; the connecting cone 21 of the calibration support rod is tensioned through a threaded hole IV 25 and is fixedly connected with the calibration mechanism; the connecting block 11 is positioned through a pin hole I29 and a pin I13 and is fixedly connected with the balance 14 through a screw I12 through a screw hole I22; the connecting block 11 is positioned through a positioning hole I4 or a positioning hole II 31 and is fixedly connected with the sliding block 10 through a threaded hole III 3 or a threaded hole II 30 by a screw II 28; the sliding block 10 is positioned through a positioning block 27 and is fixedly connected with the connecting block 11 through a screw II 28 through a screw hole II 23; the slider 10 is positioned through the bottom side surface, passes through the through hole I34, the chute 35 and the gasket 7, and adopts the nut 8 and the bolt 9 to be fixedly connected with the loading main body 1.
As can be seen from fig. 1, 2, 3, 18: the double-fixed-support part balance loading device adopts a bilateral fixed support mode. At present, most of component balances adopt a single-side fixed support mode, and in order to meet the calibration requirement, the double-fixed-support component balance loading device adopts a double-side fixed support mode. U-shaped devices 17 are arranged on two sides of the connecting part of the calibration support rod and the balance 14, and two lugs of the balance 14 are fixedly installed respectively.
As can be seen from fig. 1 to 5 and 18 to 20: the calibration support rod of the double-fixed support component balance loading device is provided with a U-shaped device 17. Six pin holes II 15 are formed in a U-shaped groove of the U-shaped device 17. Two lugs of the balance 14 can be installed in the U-shaped device 17, and the balance 14 is positioned and fixed through the upper pin hole II 15 or the lower pin hole II 15 by adopting four pins II 16, so that the calibration of the balance 14 in two directions is realized. Calibration bar set reference level VIII 18 ensures the calibration of balance 14.
As can be seen from fig. 1 to 13: the connection block 11 can be aligned in both directions without being detached from the balance 14. A reference surface V24, a reference surface II 5, a reference surface III 6 and a reference surface IV 26 are arranged on the connecting block 11, and the calibration state of the balance 14 can be ensured through the position relation of the reference surfaces; a positioning hole II 31 and a threaded hole II 30 are formed in the reference surface V24, the positioning hole II 31 is used for positioning, a screw II 28 is fixedly connected with the sliding block 10, and the balance 14 is loaded with axial force, pitching moment and yawing moment through the tip 19, so that the balance 14 can be longitudinally and statically calibrated; a positioning hole I4 and a threaded hole III 3 are formed in the datum plane II 5, the datum plane is positioned through the positioning hole I4, a screw II 28 is fixedly connected with the sliding block 10, and the balance 14 is loaded with lateral force and rolling torque through the tip 19, so that transverse static calibration of the balance 14 can be achieved.
As can be seen from fig. 1 to 5 and 8 to 17: the slider 10 can be aligned in both directions without being attached to and detached from the loading body 1. The calibration support rod and the balance 14 are positioned and fixed through the four pin holes II 15 and the four pins II 16. The reference surfaces vi 32 and vii 33 are provided on the slider 10, and the reference surface i 2 is provided on the loading body 1, and the calibration state of the balance 14 can be ensured by the positional relationship of these reference surfaces. A positioning block 27 and a screw hole II 23 are arranged on the datum plane VI 32, the datum plane VI is positioned through a positioning hole II 31 and the positioning block 27, a screw II 28 is adopted, and the sliding block 10 is fixedly connected with the connecting block 11; a through hole I34 is formed in the sliding block 10, the sliding block 10 is fixedly connected with the loading main body 1 through the through hole I34, the sliding groove 35 and the gasket 7 by adopting a nut 8 and a bolt 9. The balance 14 is loaded with axial force, pitching moment and yawing moment through the center 19, so that the longitudinal static calibration of the balance 14 can be realized; the screw II 28 is detached, the sliding block 10 and the loading main body 1 are simultaneously detached, the pin II 16 is detached, the two lug plates of the balance 14 rotate in the U-shaped device 17 of the calibration support rod, the balance 14 is fixed through the four pin holes II 15 below, the balance 14 is fixed through the pin II 16, the positioning holes I4 and the positioning blocks 27 are used for positioning, the sliding block 10 is fixedly connected with the connecting block 11 through the screw II 28, and under the condition that the sliding block 10 and the loading main body 1 are not detached, the balance 14 is loaded with lateral force, rolling moment and yawing moment through the tip 19, and transverse static calibration of the balance 14 can be achieved.
In the calibration process, the load acting on the tip 19 causes the measuring device on the balance 14 to generate corresponding deformation through the balance loading device with the double fixed support parts, the strain gauges arranged on the measuring device also generate corresponding deformation, so that the resistance of the Wheatstone full-bridge measuring circuit changes, each resistance increment is generated, the resistance increment is converted into a voltage signal increment through the Wheatstone full-bridge circuit, and the static calibration of the axial force X component, the pitching moment Mz component, the lateral force Z component, the rolling moment Mx component and the yawing moment My component of the balance 14 is realized after the voltage signal increment is processed through a computer.
Although the embodiments of the present invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, but it can be applied to various fields suitable for the present invention. Additional modifications and refinements will readily occur to those skilled in the art without departing from the principles of the present invention, and the present invention is not limited to the specific details and illustrations shown and described herein.
Claims (6)
1. The double-fixed support component balance loading device is characterized by being of a steel piece combined structure and comprising a loading main body (1), a sliding block (10), a connecting block (11) and a calibration support rod;
the loading main body (1) is of a square flat plate structure, four corners are respectively provided with a vertically upward tip (19), the tips (19) are used for hoisting a tray to load weights for the balance (14), and the loading main body (1) is provided with parallel sliding grooves (35);
the sliding block (10) is an I-shaped block body, the upper part of the sliding block (10) is an upper flat plate, and the lower part of the sliding block (10) is a lower flat plate; a positioning block (27) is arranged on the upper surface of the upper flat plate, and a screw hole II (23) is also arranged on the upper flat plate; a through hole I (34) matched with the sliding groove (35) is formed in the lower flat plate, a bolt (9) sequentially penetrates through the sliding groove (35) and the through hole I (34) from bottom to top, and is screwed down through a nut (8), so that the sliding block (10) is fixed on the upper surface of the loading main body (1);
the connecting block (11) is a C-shaped block body with a C-shaped through groove, the upper surface and the lower surface of the C-shaped block body are horizontal planes, the side surfaces of the C-shaped block body are vertical planes, and the inner upper surface and the inner lower surface of the C-shaped through groove are horizontal planes in a longitudinal loading state; the free end of the balance (14) is clamped in the C-shaped through groove, a pin hole I (29) and a screw hole I (22) are formed in the C-shaped surface of the C-shaped block body, a pin I (13) penetrating through the pin hole I (29) is positioned, a screw I (12) penetrating through the screw hole I (22) is screwed, and the free end of the balance (14) is positioned and fixed in the C-shaped through groove; the lower surface and the side surface of the C-shaped block body are respectively provided with a positioning hole II (31) and a positioning hole I (4) which are matched with the positioning block (27), and the lower surface and the side surface are also respectively provided with a threaded hole II (30) and a threaded hole III (3); in a longitudinal loading state, when the lower surface of the connecting block (11) is attached to the upper surface of the upper flat plate of the sliding block (10), the positioning block (27) is inserted into the positioning hole II (31), the screw II (28) is screwed into the threaded hole II (30) from bottom to top, and the sliding block (10) and the connecting block (11) are fixedly connected; in a transverse loading state, when the side face of the connecting block (11) is attached to the upper surface of an upper flat plate of the sliding block (10), the positioning block (27) is inserted into the positioning hole I (4), the screw II (28) is screwed into the threaded hole III (3) from bottom to top, and the sliding block (10) and the connecting block (11) are fixedly connected;
the calibration support rod consists of a U-shaped device (17), an equal straight section (20) and a connecting cone (21) which are connected in sequence; two ends of the U-shaped device (17) are provided with U-shaped grooves matched with lugs at two ends of the balance (14), the lugs are inserted into the U-shaped grooves, and two groups of pin holes II (15) matched with through holes on the lugs are arranged on the U-shaped grooves; the group of pin holes II (15) are used for the condition that the lower surface of the connecting block (11) is attached to the upper surface of the upper flat plate of the sliding block (10) in a longitudinal loading state; the other group of pin holes II (15) is used for the condition that the side surface of the connecting block (11) is attached to the upper surface of the upper flat plate of the sliding block (10) in a transverse loading state; the lug is fixed through a pin II (16) penetrating through a through hole II (36) and a pin hole II (15) on two sides of the U-shaped groove, and then a balance (14) is fixed; a threaded hole IV (25) is formed in the central axis of the connecting cone (21), and the threaded hole IV (25) is tightened through a special bolt, so that the connecting cone (21) is fixedly connected with the calibrating mechanism.
2. The double-support balance loading device according to claim 1, wherein a gasket (7) is mounted on the bolt (9), and the gasket (7) is compressed when the nut (8) is screwed down.
3. The double-solid-support part balance loading device according to claim 1, wherein the upper surface of the loading body (1) is provided with a reference surface I (2).
4. The balance loading device with double solid support components according to claim 1, characterized in that the upper surface of the upper flat plate of the slide block (10) is provided with a reference surface VI (32), and the lower surface of the lower flat plate is provided with a reference surface VII (33).
5. The balance loading device with double fixed support parts according to claim 1, wherein a reference surface III (6) is arranged on the upper surface of the connecting block (11), a reference surface II (5) is arranged on the side surface of the connecting block, a reference surface V (24) is arranged on the lower surface of the connecting block, and a reference surface IV (26) is arranged in the C-shaped through groove.
6. The double-support balance loading device according to claim 1, wherein a reference surface VIII (18) is arranged on the upper surface of the U-shaped device (17).
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| CN202210269144.1A CN114646450B (en) | 2022-03-18 | 2022-03-18 | Balance loading device with double fixed supporting parts |
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| CN202210269144.1A CN114646450B (en) | 2022-03-18 | 2022-03-18 | Balance loading device with double fixed supporting parts |
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| CN114646450B CN114646450B (en) | 2023-04-07 |
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|---|---|---|---|---|
| CN115127773A (en) * | 2022-08-31 | 2022-09-30 | 中国航空工业集团公司沈阳空气动力研究所 | Aerodynamic force load measuring device capable of rapidly replacing test state |
| CN115127773B (en) * | 2022-08-31 | 2022-11-15 | 中国航空工业集团公司沈阳空气动力研究所 | Aerodynamic force load measuring device capable of rapidly replacing test state |
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| CN114646450B (en) | 2023-04-07 |
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