Six-component balance calibration device and calibration method

Abstract

The invention discloses a six-component balance calibration device and method, and the device comprises a balance outward support, a calibration balance is disposed on the balance outward support, the top surface of the calibration balance is fixedly provided with a cross, the balance outward support is provided with a plurality of force loading source groups, and the force loading source groups are disposed at the outer side of the calibration balance. The force loading source group comprises a pulley block and a weight group, and an outgoing line connected to the weight group is connected with the cross after bypassing the pulley block or is connected with the cross after being changed to a required direction through the pulley so as to load the calibration balance. According to the invention, the labor efficiency can be improved in the calibration work.

Description

Technical Field

[0001] The present invention belongs to the technical field of aerospace testing, and particularly relates to a six-component balance calibration device and a calibration method. Background Art

[0002] A balance calibration device generally consists of parts such as a loading system, an adjustment system, a power source system, and a control system. The loading system is one of the most important systems of the calibration device, mainly providing the load required for calibration, including a loading rack, a calibration bench, and a power source, etc. Before the drag and ditching tests of an amphibious aircraft test model, precision measurement is required. As the main measuring component in the aircraft drag test and ditching test, the balance also has higher and higher requirements for precision. However, the existing balance calibration devices have complex mechanical structures, are either too large or too small in size, and cannot meet the requirements for precision. Before designing the balance device, the calibration function, occupied space size, and loading method of the balance calibration device need to be comprehensively considered. Most of the currently used balance calibration devices are three-degree-of-freedom or four-degree-of-freedom balances, which cannot meet the calibration of the six-component balance before the drag and ditching tests of aircraft test models or ship models. However, the six-component balance calibration device is too small to meet the test requirements, and there is an axial force accompanying the torque applied to the calibrated six-component balance, resulting in inaccurate calibration of the balance. Moreover, the calibration of the six-component balance usually adopts the method of manually loading weights, with low efficiency. Summary of the Invention

[0003] Object of the Invention

[0004] Aiming at the problems of low precision and low efficiency of the existing six-component balance calibration device, the present invention provides a six-component balance calibration device and a calibration method.

[0005] Technical Solution of the Invention

[0006] A six-component balance calibration device includes an external balance bracket, a calibration balance is arranged on the external balance bracket, a cross is fixed on the top surface of the calibration balance, several force loading source groups are arranged on the external balance bracket, the force loading source groups are arranged outside the calibration balance, each force loading source group includes a pulley group and a weight group, and the lead wire connected to the weight group bypasses the pulley group and then is connected to the cross or is changed to the required direction through the pulley and then is connected to the cross to load the calibration balance.

[0007] Preferably, the force loading source group can respectively apply a positive Z-axis pulling force Fz, a positive Y-axis pulling force Fy, a negative Y-axis pulling force -Fy, a positive Z-axis torque Mz, a negative Z-axis torque -Mz, a positive Y-axis torque My, a negative Y-axis torque -My, a positive X-axis torque Mx, a negative X-axis torque -Mx, a positive X-axis pulling force Fx, and a negative X-axis pulling force -Fx to the calibration balance.

[0008] Preferably, the weight set includes a plurality of weights arranged vertically, and adjacent weights are connected.

[0009] Preferably, adjacent weights are connected by an I-beam.

[0010] Preferably, the cross has a plurality of lugs for connecting the lead wires.

[0011] Preferably, it further includes a guide wheel assembly and a second steering pulley assembly. The guide wheel assembly is located directly above the calibration balance, and the second steering pulley assembly is located below the calibration balance. The lead wire passing around the guide wheel assembly is connected to the cross, and the lead wire between the guide wheel assembly and the cross is along the positive Z-axis of the calibration balance; the lead wires passing around the pulleys of the second steering pulley assembly are connected to the cross, and the lead wires between the pulleys of the second steering pulley assembly and the cross are along the negative Z-axis of the calibration balance.

[0012] Preferably, it further includes a first steering pulley assembly provided on the outer bracket of the balance. The first steering pulley assembly includes a first steering pulley assembly one, a first steering pulley assembly two, a second steering pulley assembly three, and a second steering pulley assembly four. The second steering pulley assembly includes a second steering pulley assembly one, a second steering pulley assembly two, a second steering pulley assembly three, and a second steering pulley assembly four. The horizontal tangents of the first steering pulley assembly one, the first steering pulley assembly two, the second steering pulley assembly three, and the second steering pulley assembly four respectively coincide with the horizontal tangents of the second steering pulley assembly one, the second steering pulley assembly two, the second steering pulley assembly three, and the second steering pulley assembly four; the vertical tangent of the pulley group of the force loading source group for applying the positive Y-axis torque My coincides with the vertical tangent of the first steering pulley assembly one; the vertical tangent of the pulley group of the force loading source group for applying the negative Y-axis torque -My coincides with the vertical tangent of the first steering pulley assembly two; the vertical tangent of the pulley group of the force loading source group for applying the positive X-axis torque Mx coincides with the vertical tangent of the first steering pulley assembly three; the vertical tangent of the pulley group of the force loading source group for applying the negative X-axis torque -Mx coincides with the vertical tangent of the first steering pulley assembly four.

[0013] Preferably, the weight set is placed above an electric cylinder fixed to the ground, and the weight of the weights is lifted by programming the stroke of the electric cylinder.

[0014] Preferably, a T-shaped groove is formed in the protruding beam of the cross, and a slider is slidably arranged in the T-shaped groove, and a lifting lug is fixed on the slider.

[0015] A calibration method for a six-component balance calibration device includes the following steps:

[0016] (1) Before calibrating the calibration balance, first obtain the functional relationship between the true value and the measured value of the weights of each weight group of the force loading source group used to load the loading direction to be calibrated of the calibration balance: Connect the calibration device according to the measured loading direction, so that the calibration balance has forces of different magnitudes in this loading direction, and the calibration balance outputs the measured weight values correspondingly. The functional relationship between the true value and the measured value of the weights is obtained through the true values and the corresponding measured weight values of a series of weight groups;

[0017] (2) By applying forces of different magnitudes in the positive Y direction to the calibration balance, the calibration of the force in the positive Y axis direction of the calibration balance is realized; by applying forces of different magnitudes in the negative Y axis direction to the calibration balance, the calibration of the force in the negative Y axis direction of the calibration balance is realized; by applying two forces of equal magnitude and the same direction in the positive X axis direction to the calibration balance, the calibration of the force in the positive 2EX axis direction of the calibration balance is realized; by applying two forces of equal magnitude and the same direction in the negative X axis direction to the calibration balance, the calibration of the force in the negative X axis direction of the calibration balance is realized; by applying different magnitudes of negative Y axis torque -My to the calibration balance, the calibration of the negative Y axis moment of the calibration balance is realized; by applying different magnitudes of positive X torque Mx to the calibration balance, the calibration of the positive X axis moment of the calibration balance is realized; by applying different magnitudes of negative X axis torque -Mx to the calibration balance, the calibration of the negative X axis moment of the calibration balance is realized; by applying two forces of equal magnitude in the positive and negative directions of the X axis to the calibration balance, the calibration of the positive Z axis moment Mz and the negative Z axis moment -Mz of the calibration balance is realized.

[0018] Advantages of the present invention: When this device performs moment calibration, it can balance the axial forces in the X-axis, Y-axis, and Z-axis directions while applying the moment; the weights are connected by I-beams, which is easy to realize the automation of weight loading; at the same time, the electric cylinder can be driven by a program, and the stroke of the electric cylinder can be accurately controlled, enabling the present invention to accurately calibrate the six-component balance applicable to drag and forced landing tests, and there are multiple loading methods to choose from, which can improve the manual efficiency in the calibration work. Brief Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a six-component balance calibration device of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the balance loading frame device.

[0021] Figure 3 Schematic structural diagram of the guide wheel assembly device.

[0022] Figure 4 Schematic structural diagram of the first steering pulley assembly device.

[0023] Figure 5 Schematic position diagram of the second steering pulley assembly.

[0024] Figure 6 Schematic position diagram of the first steering pulley assembly.

[0025] Figure 7 Schematic position diagram of the force loading source group.

[0026] Figure 8 Schematic structural diagram of the weight group.

[0027] Figure 9 Schematic position diagram of the cross ear.

[0028] Figure 10 Schematic structural diagram of the cross assembly. Detailed implementation mode

[0029] The present invention is realized through the following technical solutions. Detailed embodiment one:

[0031] As Figure 1 shown, the present invention provides a six-component balance calibration device, including: an external balance bracket 1, a balance loading bracket 2, a force loading source group 3, an electric cylinder 4, a base 5, a first steering pulley assembly 6, a lead wire 7, and a manhole 8.

[0032] As Figure 2 shown, the balance loading bracket 2 includes a guide wheel assembly 2A, a Z-direction transverse frame 2B, a cross 2C, an upper balance transition plate 2D, a calibration balance 2E, a lower balance transition plate 2F, a Z-direction pulley support frame 2G, an upper support plate base 2H, a support plate bottom column 2I, a second steering pulley assembly 2J, and a support plate base 2K; among them, as Figure 3 shown, the guide wheel assembly 2A includes a pulley support plate 2A1, a pulley support rod 2A2, a guide wheel 2A3, a pulley inner end cover 2A4, a pulley outer end cover 2A5, a shaft 2A6, a hexagon nut 2A7, and a deep groove ball bearing 2A8.

[0033] As Figure 4 shown, the first steering pulley assembly 6 includes a guide wheel 6A, a pulley inner end cover 6B, a pulley outer end cover 6C, a shaft 6D, a hexagon nut 6E, a deep groove ball bearing 6F, and a guide wheel steering bracket 6G; the second steering pulley assembly 2J has the same structure as the first steering pulley assembly 6; by Figure 5It can be seen that these are the positions of the four second steering pulley assemblies 2J, which include the second steering pulley assembly 2J.1, the second steering pulley assembly 2J.2, the second steering pulley assembly 2J.3, and the second steering pulley assembly 2J.4; from Figure 6 It can be seen that these are the positions of the four first steering pulley assemblies 6, which include the first steering pulley assembly 6.1, the first steering pulley assembly 6.2, the second steering pulley assembly 6.3, and the second steering pulley assembly 6.4.

[0034] As Figure 1 shown, a manhole is provided on one side of the balance support 1 to facilitate personnel to install the balance loading rack 2 inside the balance loading rack 2; the balance loading rack 2 is positioned and connected to the balance outer support 1 through four positioning pin holes around the support plate base 2K; the second steering pulley assembly 2J is fixed to the support plate base 2K by positioning bolts; the support plate bottom column 2I is connected to the support plate upper base 2H and the support plate base 2K by bolts; the support plate upper base 2H is provided with through holes at four positions along the circumferential direction at 90°, and the through holes are left to facilitate the lead wire 7 to be led out to the second steering pulley assembly 2J; the balance lower transition plate 2F is fixed to the support plate upper base 2H by bolts; the balance 2E is connected and positioned to the balance upper transition plate 2D and the balance lower transition plate 2F by bolts; the cross 2C is connected to the balance upper transition plate 2D by four circumferential bolts; the two Z-direction pulley support frames 2G are fixed to the balance upper transition plate 2D by bolts; the Z-direction transverse frame 2B is horizontally mounted on the two Z-direction pulley support frames 2G by bolts.

[0035] As Figure 7 shown, the force loading source group 3 includes 11 force loading source groups, namely the 1st force loading source group 3A, the 2nd force loading source group 3B, the 3rd force loading source group 3C, the 4th force loading source group 3D, the 5th force loading source group 3E, the 6th force loading source group 3F, the 7th force loading source group 3G, the 8th force loading source group 3H, the 9th force loading source group 3I, the 10th force loading source group 3J, and the 11th force loading source group 3K; the force loading source group 3_ includes a pulley group 3_1 and a weight group 3_2.

[0036] The pulley group 3_1 is fixed to the balance outer support 1 by bolts and positioning pins, and the tangent of the guide wheel of the pulley group 3_1 coincides with the tangent of the guide wheel of the first steering pulley assembly 6 and the tangent of the guide wheel of the second steering pulley assembly 2J; the weight group 3_2 is connected to the cross 2C through the lead wire 7; as Figure 8 shown, the weight group 3_2 includes weights 3_21 and an I-shaped connecting beam 3_22, and the weights 3_21 are connected by relying on the I-shaped connecting beam 3_22.

[0037] As Figure 9As shown, the cross 2C connects the force loading source group 3 with the calibration balance 2E; 11 lugs are installed on the cross 2C, namely the first lug 2C1, the second lug 2C2, the third lug 2C3, the fourth lug 2C4, the fifth lug 2C5, the sixth lug 2C6, the seventh lug 2C7, the eighth lug 2C8, the ninth lug 2C9, the tenth lug 2C10, and the eleventh lug 2C11; the lead wires 7 of the force loading source group 3 pass through the respective bolt through holes.

[0038] The first force loading source group 3A is connected to the first lug 2C1 through the lead wire 7 to apply a Z-direction tensile force Fz to the calibration balance 2E; the lead wire 7 of the second force loading source group 3B is connected to the second lug 2C2 to apply a Y-direction tensile force Fy to the calibration balance 2E; the lead wire 7 of the third force loading source group 3C is connected to the third lug 2C3 to apply a -Fy Y-direction tensile force to the calibration balance 2E; the lead wire 7 of the fourth force loading source group 3D is connected to the fourth lug 2C4 to apply a Z-direction torque Mz to the calibration balance 2E; the lead wire 7 of the fifth force loading source group 3E is connected to the fifth lug 2C5 to apply a -Mz Z-direction torque to the calibration balance 2E; the lead wire 7 of the sixth force loading source group 3F is connected to the sixth lug 2C6 to apply a positive Z-direction torque Mz to the calibration balance 2E; the lead wire 7 of the seventh force loading source group 3G is connected to the seventh lug 2C7 to apply a -Mz Z-direction negative torque to the calibration balance 2E; the lead wire 7 of the eighth force loading source group 3H is connected to the eighth lug 2C8 to apply a Y-direction torque My to the calibration balance 2E; the lead wire 7 of the ninth force loading source group 3I is connected to the ninth lug 2C9 to apply a -My Y-direction torque to the calibration balance 2E; the lead wire 7 of the tenth force loading source group 3J is connected to the tenth lug 2C10 to apply an X-direction torque Mx to the calibration balance 2E; the lead wire 7 of the eleventh force loading source group 3K is connected to the eleventh lug 2C11 to apply a -Mx X-direction torque to the calibration balance 2E.

[0039] The tangent line of the guide pulley in the second steering pulley assembly 2J coincides with the axes of the eighth hanger 2C8, the ninth hanger 2C9, the tenth hanger 2C10, and the eleventh hanger 2C11; the tangent line of the guide pulley in the first steering pulley assembly 6 coincides with the tangent line of the guide pulley in the second steering pulley assembly 2J; the angles between the first steering pulley assembly 6.3 and the second steering pulley assembly 2J.3 and the positive X-axis are 12° to prevent the weight set 3J2 in the 10th force loading source group 3J from interfering with other weight sets; similarly, the angles between the first steering pulley assembly 6.4 and the second steering pulley assembly 2J.4 and the negative X-axis are 12° to prevent the weight set 3J2 in the 10th force loading source group 3J from interfering with other weight sets; the tangent line of the guide pulley in the first steering pulley assembly 6 coincides with the tangent line of the guide pulley in the second steering pulley assembly 2J; the tangent line of the guide pulley in the pulley block 3H1 in the 8th force loading source group 3H coincides with the tangent line of the guide pulley in the first steering pulley assembly 6.1; the tangent line of the guide pulley in the pulley block 3I1 in the 9th force loading source group 3I coincides with the tangent line of the guide pulley in the first steering pulley assembly 6.2; the tangent line of the guide pulley in the pulley block 3J1 in the 10th force loading source group 3J coincides with the tangent line of the guide pulley in the first steering pulley assembly 6.3; the tangent line of the guide pulley in the pulley block 3K1 of the 11th force loading source group 3K coincides with the tangent line of the guide pulley in the first steering pulley assembly 6.4; after the lead wire 7 bypasses the guide pulleys of the pulley blocks of their respective force loading source groups 3, at the end of the lead wire 7, the weight sets of their respective force loading source groups are suspended, and the weight sets are placed on the electric cylinder 4 located on the ground.

[0040] The calibration balance is a six-component balance, and the calibration of the positive Z-axis of the balance is carried out in the following way:

[0041] The lead wire 7 led out from the ear hole of the first hanger 2C1 of the cross 2C bypasses the guide pulley of the guide pulley assembly 2A and the guide pulley in the pulley block 3A1 of the first force loading source group 3A, and different specifications of weight sets 3A2 are suspended at the end of the lead wire 7. The weight sets 3A2 are placed above the electric cylinder 4 fixed on the ground. By programming the program to control the stroke of the electric cylinder 4, different magnitudes of positive Z-direction forces are applied to the lead wire 7. At this time, the true value of the weight of the weights is: Fz = F 总 -F 电 , where F 总 is the total weight of the weights, and F 电 is the weight of the contact between the weights and the electric cylinder; at this time, the true weight of the weights suspended on the lead wire 7 is known, and the measured value of the weights output by the balance is also known. By recording a series of true values and measured values of the weights and processing the two sets of data, the functional relationship between the true value and the measured value of the weight set can be obtained; when the balance measures the positive Z-direction force of an object again, the measured value is obtained, and the true value can be obtained through the known functional relationship between the true value and the measured value.

[0042] Similarly, the lead wire 7 led out from the lug through-hole of the second lug 2C2 of the cross 2C bypasses the guide wheel in the pulley block 3B1 of the third force loading source group 3B, and different specifications of weight groups 3B2 are suspended at the end of the lead wire 7. The weight group 3B2 is placed above the electric cylinder 4 fixed on the ground. By controlling the stroke of the electric cylinder 4, different magnitudes of Y positive direction forces are applied to the lead wire 7 to calibrate the Y axis positive direction force of the balance.

[0043] Similarly, the lead wire 7 led out from the lug through-hole of the third lug 2C3 of the cross 2C bypasses the guide wheel in the pulley block 3C1 of the third force loading source group 3C, and different specifications of weight groups 3C2 are suspended at the end of the lead wire 7. The weight group 3C2 is placed above the electric cylinder 4 fixed on the ground. By controlling the stroke of the electric cylinder 4, different magnitudes of Y negative direction forces are applied to the lead wire 7 to calibrate the Y axis negative direction force of the balance.

[0044] The lead wire 7 led out from the lug through-hole of the fourth lug 2C4 of the cross 2C bypasses the guide wheel in the pulley block 3D1 of the fourth force loading source group 3D, and different specifications of weight groups 3D2 are suspended at the end of the lead wire 7. The lead wire 7 led out from the lug through-hole of the fifth lug 2C5 of the cross 2C bypasses the guide wheel in the pulley block 3E1 of the fifth force loading source group 3E, and different specifications of weight groups 3E2 are suspended at the end of the lead wire 7. They jointly apply different magnitudes of X positive direction forces. At this time, the true value of the weight is Fy = 2 * (F 总 - F 电 ), where F 总 is the total weight of the weights, and F 电 is the weight of the weights in contact with the electric cylinder. At this time, the true weights of the weights suspended on the two lead wires 7 are known, and the measured values of the weights output by the balance are also known. By processing the two sets of data, the functional relationship between the true value and the measured value of the weight group can be obtained. When the balance measures the X positive direction force of an object again, its measured value is obtained, and its true value is obtained through the known functional relationship between the true value and the measured value.

[0045] The lead wire 7 led out from the lug through-hole of the sixth lug 2C6 of the cross 2C bypasses the guide wheel in the pulley block 3F1 of the sixth force loading source group 3F, and different specifications of weight groups 3F2 are suspended at the end of the lead wire 7. The lead wire 7 led out from the lug through-hole of the seventh lug 2C7 of the cross 2C bypasses the guide wheel in the pulley block 3G1 of the seventh force loading source group 3G, and different specifications of weight groups 3G2 are suspended at the end of the lead wire 7. They jointly apply different magnitudes of X axis negative direction forces to calibrate the X axis negative direction force of the balance.

[0046] The lead wire 7 drawn from the lug through-hole of the 8th lug 2C8 of the cross 2C bypasses the guide pulley of the second steering pulley assembly 2J.1, the guide pulley of the first steering pulley assembly 6.1, and the guide pulley in the pulley block 3H1 of the 8th force loading source group 3H, and then different specifications of weight sets 3H2 are suspended at the end of the lead wire 7. The weight set 3H2 is placed above the electric cylinder 4 fixed on the ground. By controlling the stroke of the electric cylinder 4, different magnitudes of positive X-axis torques are applied to the lead wire 7. At this time, the true value of the torque is: My = FL, where F is the weight of the weight on the lead wire 7, L is the distance between the center line of the 8th lug 2C8 and the cross 2C, and My is the positive Y-axis torque; while applying weights to the lead wire 7 at the lug through-hole of the 8th lug 2C8 of the cross 2C, weights of the same weight are applied to the lead wire 7 at the lug through-hole of the 1st lug 2C1 of the cross 2C. At this time, the forces in the Z-axis direction are two weight forces with equal magnitudes and opposite directions. At this time, there is only the positive Y-axis torque; given the measured value of the positive Y-axis torque output by the balance, by processing the two sets of data, the functional relationship between the true value and the measured value of the torque can be obtained, and then the calibration of the positive Y-axis torque of the balance can be carried out.

[0047] Similarly, the lead wire 7 drawn from the lug through-hole of the 9th lug 2C9 of the cross 2C bypasses the guide pulley of the second steering pulley assembly 2J.2, the guide pulley of the first steering pulley assembly 6.2, and the guide pulley in the pulley block 3I1 of the 9th force loading source group 3I, and then different specifications of weight sets 3I2 are suspended at the end of the lead wire 7. The weight set 3I2 is placed above the electric cylinder 4 fixed on the ground. By controlling the stroke of the electric cylinder 4, different magnitudes of negative Y-axis torques are applied to the lead wire 7, and then the calibration of the negative Y-axis torque of the balance is carried out.

[0048] Similarly, the lead wire 7 drawn from the lug through-hole of the 10th lug 2C10 of the cross 2C bypasses the guide pulley of the second steering pulley assembly 2J.3, the guide pulley of the first steering pulley assembly 6.3, and the guide pulley in the pulley block 3J1 of the 10th force loading source group 3J, and then different specifications of weight sets 3J2 are suspended at the end of the lead wire 7. The weight set 3J2 is placed above the electric cylinder 4 fixed on the ground. By controlling the stroke of the electric cylinder 4, different magnitudes of positive X-axis torques are applied to the lead wire 7, and then the calibration of the positive X-axis torque of the balance is carried out.

[0049] Similarly, the lead wire 7 drawn from the lug through-hole of the 11th lug 2C11 of the cross 2C bypasses the guide pulley of the second steering pulley assembly 2J4, the guide pulley of the first steering pulley assembly 6.4, and the guide pulley in the pulley block 3K1 of the 11th force loading source group 3K, and then different specifications of weight sets 3K2 are suspended at the end of the lead wire 7. The weight set 3K2 is placed above the electric cylinder 4 fixed on the ground. By controlling the stroke of the electric cylinder 4, different magnitudes of negative X-axis torques are applied to the lead wire 7, and then the calibration of the negative X-axis torque of the balance is carried out.

[0050] The lead wire 7 led out from the lug through-hole of the 4th lug 2C4 of the cross 2C bypasses the guide pulley in the pulley block 3D1 of the 4th force loading source group 3D, and different specifications of weight sets 3D2 are suspended at the end of the lead wire 7. Similarly, the lead wire 7 led out from the lug through-hole of the 6th lug 2C6 of the cross 2C bypasses the guide pulley in the pulley block 3F1 of the 6th force loading source group 3F, and different specifications of weight sets 3F2 are suspended at the end of the lead wire 7. By controlling the stroke of the electric cylinder 4, different magnitudes of positive Z-axis torques are applied to the lead wire 7. At this time, the true value of the torque is: Mz = 2 * FL, where F is the weight of the weights on the lead wire 7, L is the distance between the center line of the 4th lug 2C4 or the 6th lug 2C6 and the cross 2C, and Mz is the positive Z-axis torque; during the measurement, since the directions and magnitudes of the forces of the lead wires 7 of the 4th lug 2C4 and the 6th lug 2C6 are equal and opposite, the X-axis forces are balanced, leaving only the positive Z-axis torque; given the measured value of the positive Z-axis torque output by the balance, by processing the two sets of data, the functional relationship between the true value and the measured value of the torque can be obtained, and then the positive Z-axis torque of the balance can be calibrated.

[0051] Similarly, the lead wire 7 led out from the lug through-hole of the 5th lug 2C5 of the cross 2C bypasses the guide pulley in the pulley block 3E1 of the 5th force loading source group 3E, and different specifications of weight sets 3E2 are suspended at the end of the lead wire 7. The lead wire 7 led out from the lug through-hole of the 7th lug 2C7 of the cross 2C bypasses the guide pulley in the pulley block 3G1 of the 7th force loading source group 3G, and different specifications of weight sets 3G2 are suspended at the end of the lead wire 7. By controlling the stroke of the electric cylinder 4, different magnitudes of negative Z-axis torques are applied to the lead wire 7, and then the negative Z-axis torque of the balance is calibrated. Specific Embodiment 2:

[0053] The present invention has another specific implementation manner, which does not limit this patent.

[0054] This specific implementation manner is to change the structure of the cross member. A T-shaped groove is opened inside the protruding beam of the cross to change the distance between the lead wire 7 and the center line of the cross, as Figure 10As shown, it includes a cross 2C, a lug 2C.1 and a slider 2C.2, and the lead wire 7 is connected to the lug. Different from the first embodiment, in the cross, a T-shaped groove is adopted to move the slider 2C.2 in the direction perpendicular to the moment-bearing direction to change the distance L between the force application point and the center line of the cross. According to the formula M = FL, with the weight of the weight unchanged, only by changing the distance L between the force application point of the lead wire 7 and the center line of the cross to change the magnitude of the moment, the calibration balance is calibrated. When the slider 2C.2 moves along the X-axis or Y-axis, the positions of the first steering pulley assembly 6 and the second steering pulley assembly 2J need to be changed simultaneously, so that the center line of the lug 2C.1 on the slider 2C.2 coincides with the tangent of the guide wheel of the second steering pulley assembly 2J and the tangent of the guide wheel of the first steering pulley assembly 6. In this embodiment, the electric cylinder 4 is not required; it is also possible to use both the method of changing the weight of the weight of the lead wire 7 and moving the slider 2C.2 in the direction perpendicular to the moment-bearing direction at the same time. In this case, the electric cylinder 4 is required.

[0055] The protection scope of the present invention is not limited to the above embodiments. Obviously, those skilled in the art can make various changes and deformations to the present invention without departing from the scope of the present invention. If these changes and deformations fall within the scope of the claims of the present invention and their equivalent technologies, the intention of the present invention also includes these changes and deformations.

Claims

1. A six-component balance calibration device, characterized in that: The invention comprises an outward-facing balance support (1), a calibration balance (2E) is arranged on the outward-facing balance support (1), a cross (2C) is fixed on the top surface of the calibration balance (2E), a plurality of force loading source groups are arranged on the outward-facing balance support (1), the force loading source groups are arranged outside the calibration balance (2E), the force loading source groups comprise a pulley group (3_1) and a weight group (3_2), and a lead-out line (7) connected to the weight group (3_2) is connected to the cross (2C) after bypassing the pulley group (3_1) or connected to the cross (2C) after being changed to a desired direction by the pulley to load the calibration balance (2E).

2. A six-component balance calibration device as claimed in claim 1, characterized in that: The force loading source group can respectively apply to the calibration balance (2E) a positive tension Fz on the Z axis of the calibration balance, a positive tension Fy on the Y axis of the calibration balance, a negative tension -Fy on the Y axis of the calibration balance, a positive torque Mz on the Z axis of the calibration balance, a negative torque -Mz on the Z axis of the calibration balance, a positive torque My on the Y axis of the calibration balance, a negative torque -My on the Y axis of the calibration balance, a positive torque Mx on the X axis of the calibration balance, a negative torque -Mx on the X axis of the calibration balance, a positive tension Fx on the X axis of the calibration balance, and a negative tension -Fx on the X axis of the calibration balance.

3. A six-component balance calibration device as claimed in claim 2, characterized in that: The weight group (3_2) comprises a plurality of weights arranged in a vertical direction, and two adjacent weights are connected.

4. A six-component balance calibration device as claimed in claim 3, characterized in that: Two adjacent weights are connected by an I-beam.

5. A six-component balance calibration device as claimed in claim 1, characterized in that: The cross (2C) is provided with a plurality of hanging ears for connecting lead wires (7).

6. A six-component balance calibration device as claimed in claim 2, characterized in that: The invention also comprises a guide wheel assembly (2A) and a second steering pulley assembly (2J, wherein the guide wheel assembly (2A) is located directly above the calibration balance (2E), and the second steering pulley assembly (2J) is located below the calibration balance (2E); a lead wire (7) bypassing the guide wheel assembly (2A) is connected to the cross (2C), and the lead wire (7) between the guide wheel assembly (2A) and the cross (2C) is along the positive direction of the Z axis of the calibration balance; a lead wire (7) bypassing each pulley of the second steering pulley assembly (2J) is connected to the cross (2C), and the lead wire (7) between each pulley of the second steering pulley assembly (2J) and the cross (2C) is along the negative direction of the Z axis of the calibration balance.

7. A six-component balance calibration device as claimed in claim 6, characterized in that: The invention also comprises a first steering pulley assembly (6) arranged on the outward support (1) of the balance, wherein the first steering pulley assembly (6) comprises a first steering pulley assembly 1 (6.1), a first steering pulley assembly 2 (6.2), a second steering pulley assembly 3 (6.3), and a second steering pulley assembly 4 (6.4); the second steering pulley assembly (2J) comprises a second steering pulley assembly 1 (2J.1), a second steering pulley assembly 2 (2J.2), a second steering pulley assembly 3 (2J.3), and a second steering pulley assembly 4 (2J.4); and horizontal tangents of the first steering pulley assembly 1 (6.1), the first steering pulley assembly 2 (6.2), the second steering pulley assembly 3 (6.3), and the second steering pulley assembly 4 (6.4) are respectively connected to the second steering pulley assembly 1 (2J.1), The horizontal tangents of the second diverting pulley assembly 2 (2J.2), the second diverting pulley assembly 3 (2J.3) and the second diverting pulley assembly 4 (2J.4) coincide with each other; the vertical tangent of the pulley assembly of the force loading source group for applying the Y positive torque My coincides with the vertical tangent of the first diverting pulley assembly 1 (6.1); the vertical tangent of the pulley assembly of the force loading source group for applying the Y positive torque -My coincides with the vertical tangent of the first diverting pulley assembly 2 (6.2); the vertical tangent of the pulley assembly of the force loading source group for applying the X positive torque Mx coincides with the vertical tangent of the first diverting pulley assembly 3 (6.3); the vertical tangent of the pulley assembly of the force loading source group for applying the X negative torque -Mx coincides with the vertical tangent of the first diverting pulley assembly 4 (6.4).

8. A six-component balance calibration device as claimed in claim 1, characterized in that: The weight set (3A2) is placed above an electric cylinder (4) fixed on the ground, and the stroke of the electric cylinder (4) is controlled by a programming program to lift the weight of the weight.

9. A six-component balance calibration device as claimed in claim 1, characterized in that: A T-shaped groove is provided on the extended beam of the cross (2C), a sliding block (2C.2) is slidably arranged in the T-shaped groove, and a lifting lug is fixed on the sliding block (2C.2).

10. A calibration method using a six-component balance calibration device as claimed in any one of claims 1 to 9, characterized in that: The steps include: (1) before calibrating the calibration balance (2E), a functional relationship between the weight real value and the measured value of the weight group (3_2) of each force loading source group used for loading the calibration balance (2E) in the loading direction to be calibrated is first obtained: a calibration device is connected according to the loading direction to be measured, so that the calibration balance (2E) has forces of different magnitudes in the loading direction, and the calibration balance (2E) outputs the weight measured value accordingly, and a functional relationship between the weight real value and the measured value is obtained through a series of weight real values ​​of the weight group (3_2) and the corresponding weight measured values; (2) By applying different magnitudes of positive Y-direction forces to the calibration balance (2E), the positive Y-direction force of the calibration balance (2E) is calibrated; by applying different magnitudes of negative Y-direction forces to the calibration balance (2E), the negative Y-direction force of the calibration balance (2E) is calibrated; by applying two forces of equal magnitude and same direction to the positive X-direction of the calibration balance (2E), the positive X-direction force of the calibration balance (2E) is calibrated; by applying two forces of equal magnitude and same direction to the negative X-direction of the calibration balance (2E), the negative X-direction force of the calibration balance (2E) is calibrated; The calibration balance (2E) is applied with different magnitudes of negative torques -My on the Y axis to realize the calibration of the negative moment on the Y axis of the calibration balance (2E); the calibration balance (2E) is calibrated by applying different magnitudes of positive torques Mx on the X axis to realize the calibration of the positive moment on the X axis of the calibration balance (2E); the calibration balance (2E) is calibrated by applying different magnitudes of negative torques -Mx on the X axis to realize the calibration of the negative moment on the X axis of the calibration balance (2E); the calibration balance (2E) is calibrated by applying two forces of equal magnitude in the positive and reverse directions of the X axis to realize the calibration of the positive moment Mz on the Z axis and the negative moment -Mz on the Z axis.

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