KR100343020B1 - Device for correcting 6-component force system - Google Patents

Abstract

PURPOSE: A device for correcting 6-component force system is provided to selectively and precisely correct from 1-component force to 6-component force without changing the setting of the corrector. CONSTITUTION: A stand portion(20) contains a lower stand(21) and an upper stand. A fixing chuck(30) of a component force measuring device(31) is installed to be movable through the lower stand. A disk(50) transmits each component force and each moment to the component force measuring device by combining with the component force measuring device. Many lower pulleys(60) are installed in the upper girth of the lower stand to be movable. Many pulley installing bars(70) are installed in the upper part of the upper stand. Many holes or slits are formed in the installing bars to be passed wires. Many upper pulleys(80) are moved or fixed in the installing bars. Many wires are hung in the upper or the lower pulleys by connecting with the disk. Weights(91) are installed in the wires. Thereby, the correction from a 1-component force to 6-component force is selectively and precisely repeated without changing the setting.

Description

6-Component Calibration Device

(Technology)

The present invention relates to a six-component calibration apparatus, and more specifically, the various forces applied to the model ship when the test using the model ship in the towing tank in order to obtain data on the resistance propulsion capacity, motion adjustment performance, etc. of the ship A device for calibrating a six-component meter used to measure

(Background)

In general, it is most preferable that a ship is designed to realize high speed while receiving the least resistance of the fluid in the most stable state on the surface of the water. In order to manufacture a ship with such a condition without trial and error, For the model ship test that can be made in advance, after the model ship has been manufactured in advance, various tests on the resistance propulsion performance and the piloting performance of the ship, such as the water resistance according to the shape of the ship and the propulsion according to the curved shape of the propeller, can be tested in the towing tank Towing tanks have been developed and used.

The towing device for test ships of model ships, after placing the model ships to be tested in a towing tank having a length, width, and depth that can have the same effect as a real sea area, and assembling the model ships in a towing tank, By towing, the model ship is allowed to travel at high speed or low speed as if it is running in the real sea area, and various test data values are obtained by the towing tanks and various measuring equipments mounted on the model ship, and the vessel with optimal conditions Is to make it possible to implement

In the example test of a model ship, the test data required for the design of a ship are obtained by various measuring equipment installed on the model ship, and among these measuring equipments, the force and the moment in the six directions acting on the anchored model ship or floating object A six-component system has been developed to measure the operating point.

Since the six-component system is a precise instrument that simultaneously measures the force and moment in six directions at one operating point, the mechanical structure inside the calibrator is very complicated, but the six-way force and moment at one operating point must be measured simultaneously. It is composed of one body. Therefore, even if only one direction of force or moment is applied, the other five directions of force or moment may be generated. Therefore, the linearity and hysteresis of each component should be good when designing the calibrator. It should be designed to appear as small as possible.

Although the multimeter including the six-component system requires elaboration in its own design and manufacture, it is essential to manufacture a calibration device capable of accurately and correctly verifying and correcting the multimeter's performance.

As with all instrumentation, the six-component system must be able to accurately and accurately measure the same measurement for each component, so that the measurement data can be relied on and must be calibrated each time it is used.

The calibration of a six-component system involves applying a known force and moment to the six-component system using several weights that are precisely manufactured prior to using the six-component system. After analyzing and verifying the relationship between the measured output value and the applied force and moment, the calibration value is calculated, and then the calibration value is applied to the actual force and moment measured by the six-component system.

In performing such a calibration operation, a calibration device (gear) capable of applying a known force and moment to the six-component system is required, and the present invention relates to such a device.

It is an object of the present invention to provide a calibration apparatus capable of selectively and precisely repeating calibration for one to six components without changing the setting of the calibration apparatus.

1 is a front view of a six-component calibration apparatus according to the present invention;

2 shows a fixed chuck moving device;

Figure 3 is a view showing the configuration of the upper pulley mounting,

4 is a schematic view showing an example of calibrating a six-component system with a six-component calibration apparatus according to the present invention;

5 is a schematic diagram showing another example of calibrating a six-component system with a six-component calibration apparatus according to the present invention;

6 is a schematic diagram showing an example of calibrating a six-component system using additional levers;

* Description of the symbols for the main parts of the drawings *

1: 6 component calibrator 20: stand

21: lower stand 22: upper stand

30: calorimeter fixed chuck (30) 31: calorimeter

50: disc 50 60: lower pulley

70: pulley mounting bracket 70: 80 upper pulley

90: wire 100: lever

An object of the present invention described above, the stand portion including a lower stand and an upper stand fixed to the upper end of the lower stand; A gyrometer fixed chuck installed to be movable up and down along the lower stand; A disk fastened to a calorimeter mounted on the fixed chuck to transmit respective components and moments to the calorimeter and having a plurality of wire connectors; A plurality of lower pulleys movably mounted around an upper end of the lower stand; And a pulley mounting stand installed at an upper end of the upper stand and having a plurality of holes or slits through which wires can pass; A plurality of upper pulleys installed on the pulley mounting stand so as to be movable and fixed in a direction in which the slits are formed; And a plurality of wires connected to the disk and hooked to the upper or lower pulley and additionally mounted at the distal end.

In addition, the calibration device is attached to the arm and the lever can adjust the direction and magnitude of the force appropriately.

Hereinafter, with reference to the accompanying drawings will be described in detail the six-component calibration apparatus according to the present invention. The following embodiments are merely illustrative of the six-component calibration apparatus according to the present invention, and are not intended to limit the scope of the present invention.

1 is a front view of a six-component calibration apparatus according to the present invention, Figure 2 is a view showing the movement of the fixed chuck, Figure 3 is a view showing the configuration of the upper pulley mounting, Figure 4 is a six-component calibration according to the present invention Figure 5 is a schematic diagram showing an example of calibrating the six-component system with the device, Figure 5 is a schematic diagram showing another example of calibrating the six-component system with the six-component calibration apparatus according to the present invention, Figure 6 is a six-component using additional levers A schematic diagram showing an example of calibrating the system.

As shown, the six-component system calibration apparatus 1 according to the present invention, the stand portion 20, the tensometer fixing chuck 30, the disk 50, a plurality of lower pulleys 60, the upper pulley mounting ( 70), and a plurality of upper pulleys 80 and wires 90 are basically included.

The stand unit 20 is a support for mounting various members of the calibration device 1 according to the present invention, and consists of a lower stand 21 and an upper stand 22. The lower stand 21 is attached to the bottom plate 24 to stand the four pillars 23 made of ordinary steel and to place various members on the bottom, and the bottom plate 24 moves the apparatus of the present invention. And the roller 25 and the fixture 26 which can be fixed is provided, the lower stand 21 is provided with a component gage fixing chuck 30 is movable.

The upper stand 22 installed on the lower stand 21 stands four pillars 27 made of steel again on the lower stand 21, and an upper pulley mount 70 is mounted on the upper stand 22.

The lower stand 21 is provided with a tensometer fixing chuck 30 that can firmly fix the six-component system 31, which is a calibration target measuring instrument, to move up and down. The fixed chuck 30 has a configuration in which the component meter 31 is completely fixed by placing the component meter 31 and tightening the fixing screw like the general chuck.

The reason for installing the fixed chuck 30 so as to be movable up and down with respect to the lower stand 21 is to set the positional relationship with the lower pulley 60 according to the size of the calorimeter 31 to be calibrated. Will be described later.

The configuration for moving the fixed chuck 30 up and down with respect to the lower stand 21 is, for example, fixed to the moving plate 33 which is fitted to be movable up and down in the lower stand 21. And guide the moving plate 33 by four guide bars 34 fixedly installed at each corner of the lower stand 21 up and down, while the screws 35a are adjacent to each of the guide bars 33. Four formed drive shafts 35 are installed up and down, and a through screw hole 36 is formed in the movable plate 33 to be screwed to the drive shaft 35, and at least one of the drive shafts 35 has a pulley 37. ) To receive the power of the reversible motor 39 through the belt 38, the four drive shafts 35 are equipped with a time belt 40 through the pulleys 37 installed on each of the drive shafts (35) ) Is rotated by the same force to move the moving plate 33 up and down The chuck 30 can be moved to and fixed in the vertical direction.

The disk 50 which transmits the load for applying the component force and moment to be calibrated to the calorimeter is detachably fixed to the calorimeter 31 mounted to the fixing chuck 30. The detachment of the disk 50 may use, for example, a method of forming a plurality of bolt holes at a corresponding position between the component meter 31 and the disk 50 and fastening the bolts. The disk 50 is formed with wire connectors 52 at both ends of at least two diagonal lines perpendicular to each other. This wire connector 52 is for hanging the wire 90 to apply a load to the calorimeter 31.

A plurality of lower pulleys 60 are installed around the upper end of the lower stand 21. The lower pulley 60 is for shifting the gravity in the vertical direction received by the weight 91 toward the disk 50, so as to be able to move left and right at a level higher than the fixed chuck 3, that is, at the same level as the disk 50. Is mounted. The lower pulley 60 is fixed to the lower pulley mounting plate 61 around the lower stand 21 and fixed to the lower pulley mounting plate 61 by using a clamp 62. ) Can be fixed.

An upper pulley mount 70 for installing the upper pulley 80 is installed at an upper end of the upper stand 22. The upper pulley mount 70 is a plate that completely covers the upper stand 22, and a wire through hole 81 is formed at the center thereof, and a plurality of wire through slits 82 are located in the outer direction from the center. It is formed in the direction (for example, 6 directions).

The upper pulley 80 is installed to be movable and fixed in the direction in which the slit 82 of the pulley mount 70 is formed, which is a wire 90 passing vertically through the wire through hole 81 or the slit 82. It is to be able to move to the required position to hang. As a method of installing the upper pulley 80 to the pulley mounting bracket 70, a bolt hole is formed in the pulley mounting bracket 70 and fastened with a fixing bolt 84, or a guide 83 on the upper surface of the pulley mounting bracket 70. After installing and moving the upper pulley 80 along the guide 83, the structure to tighten the fixing bolt 84 can be used.

The disk 50, the lower pulley 60, and the upper pulley 80 described above are connected to or caught by a wire 90 capable of appropriately attaching a weight 91 according to the component weight to be corrected.

For example, as shown in FIG. 4, when it is desired to calibrate the measurement state of the force Fx of the six-component system, a component meter 31 is mounted on the fixed chuck 30, and the component meter 31 is used. Mount the disk 50, and then operate the reversible motor 39 to match the level of the lower pulley 60 with the disk 50 by adjusting the position of the moving plate 33, and then the disk 50 Connect the wire 90 to the fixture (52a) of and move the wire in the advancing direction of the wire 90 to the lower pulley (60) to fix the position and then put down the weight (91) down. In this state, a force corresponding to the weight of the weight is applied to the six-component system.

As shown in FIG. 5, in the case where it is desired to calibrate the measurement state of the moment My of the six-component system, as shown in relation to FIG. 4 above, the component meter 31 and the disk 50 are mounted. After matching the level of the lower pulley 60 and the disk 50, the wire 90 is connected to the fixtures 52c and 52d of the disk 50, respectively, and moved in the advancing direction of the wire 90 to fix the position. Hook the wires to the two lower pulleys (60) and then put down the weight (91). Here, connecting the wires to the two fasteners 52c and 52d and applying the loads in opposite directions to each other is intended to allow only the pure moment to act by engaging the six-component system. In this state, the moment (My) by the force corresponding to the weight of the weight is applied to the six-component system.

The calibration of the six-component system using the lever 100 will be described with reference to FIG. The lever 100 is bolted to the lower pulley mounting plate 61 described above, and the lever 100 is formed such that the support point O1 is biased to one side, for example, five to one of the length of the lever Therefore, there is an advantage that a large load can be applied while using a light weight by acting to double the weight of the weight applied to the disk 50.

In order to calibrate the force Fx of the six-component system using the lever 100, as described with reference to FIG. 4 above, the component system 31 and the disk 50 are mounted, and then the disk 50 is mounted. After connecting the wire 90 to the fixture 52a of the wire 90 to one end of the lever 100 fixed to the lower pulley mounting plate 61 in the traveling direction of the wire 90, the other end of the lever 100 Reconnect the wire 90 to the wire 90 proceeds in a direction perpendicular to the lever 100, the lower pulley fixed to the advancing direction of the wire to the lower pulley mounting plate 61 opposite the wire After hanging on (60), hang it down and put it down. In this state, the six-component system is subjected to a force multiplied by the ratio of the weight of the weight of the weight.

The pulley 80 installed on the pulley mounting plate 70 is used to lift the wire upward when correcting other forces or moments of the six-component system, and a description thereof will be omitted.

According to the six-component calibration device 1 according to the present invention described above, there is an effect that the calibration for the six components at one component can be selectively and precisely repeated without changing the setting of the calibration device.

Claims (6)

A stand part 20 including a lower stand 21 and an upper stand 22 fixedly installed on an upper end of the lower stand 21; A hydrometer fixing chuck 30 installed to be movable up and down along the lower stand 21; A disk 50 fastened to a calorimeter 31 mounted on the fixed chuck 30 to transmit respective components and moments to the calorimeter 31 and having a plurality of wire connectors 52 formed thereon; A plurality of lower pulleys 60 that are movably mounted around an upper end of the lower stand 21; A pulley mount 70 installed at an upper end of the upper stand 22 and having a plurality of holes 81 or slits 82 through which wires can pass; A plurality of upper pulleys 80 installed on the pulley mounting table 70 so as to be movable and fixed in a direction in which the slits 82 are formed; And a plurality of wires (90) connected to the disk (50) and hooked to the upper or lower pulley (60,80) and mounted with a weight (91) at the end. The apparatus of claim 1, wherein the wire (90) is connected by mediating a lever (100). According to claim 1 or 2, wherein the device for moving the fixed chuck 30 up and down relative to the lower stand 21, the fixed chuck 30 is fixed and can be moved up and down in the lower stand 21. Moving plate 33 is fitted so that the upper and lower fixed corners of the lower stand 21, a plurality of guide bars 34 for guiding the moving plate 33, screwed to the moving plate 33 It characterized in that it comprises a plurality of drive shafts 35 are formed with a screw, a reversible motor 39 for driving at least one of the drive shafts 35, and the time belt 40 is fastened to the plurality of drive shafts 35 6 component calibrator. The six-component system according to claim 1 or 2, wherein the lower pulley (60) is fixed to the lower pulley mounting plate (61) installed around the lower stand (21) by a clamp (62). Calibration device. According to claim 1 or 2, wherein the upper pulley 80 is moved along the guide 83 formed on the upper surface of the pulley mounting 70 and six component calibration, characterized in that fixed by a fixing bolt 84 Device. According to claim 1 or 2, the upper pulley mounting base 70 is formed with a wire through-hole 81 in the center, a plurality of wire through the slits 82 are formed in a plurality of directions from the center to the outer direction. 6-meter system calibration device characterized in that.