Sheet type hinge moment balance loading device with axial force
By designing a combined structure of the sheet hinge torque balance loading device, the weight gravity is directly applied, which solves the measurement error problem introduced by the pulley friction, and realizes calibration in four directions, improving measurement accuracy.
Patent Information
- Application Number
- CN202510578442.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-07-11
AI Technical Summary
The existing sheet-type hinge moment balance with axial force has problems with measurement errors in the introduction of pulley friction and reduction in accuracy caused by single-direction loading during calibration.
A combined structure of the sheet hinge moment balance loading device is designed, including calibration support rods, calibration joints, sheet hinge moment balances with axial force, conversion joints, sliders and loading heads. By directly applying weight gravity, the pulley friction is avoided, and calibration in four directions is achieved.
It effectively improves the measurement accuracy of the hinge moment balance, reduces measurement errors, and improves measurement accuracy.
Smart Images
Figure CN120293471A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of multi-component aerodynamic load measurement sensors, and particularly relates to a loading device for a flap hinge moment balance with axial force. Background Art
[0002] At present, in the hinge moment measurement tests of scaled models in high-speed wind tunnel tests, balances with a chip structure are widely used to measure the hinge moment, which are called chip hinge moment balances. With the development of aerospace technology, especially the research and development of advanced aircraft, the requirements for the quality of hinge moment test data are getting higher and higher, and higher requirements are put forward for the measurement accuracy of chip hinge moment balances. In order to improve the measurement accuracy of chip hinge moment balances, chip hinge moment balances have developed from three-component to four-component (adding axial force) or five-component (adding axial force and yaw moment). Such four-component or five-component chip hinge moment balances are collectively referred to as chip hinge moment balances with axial force. The calibration of chip hinge moment balances with axial force mostly uses the axial force loading structure of a conventional six-component calibration frame, and the gravity of the weights is converted into a horizontal axial force through a fixed pulley structure and applied to the loading device to calibrate the axial force and yaw moment in the axial force direction, but the calibration can only be carried out in a single direction (generally the positive axial force direction). Due to the relatively small axial force of the chip hinge moment balance with axial force, the existence of pulley friction will introduce measurement errors in the balance; at the same time, single-direction loading will also increase measurement errors and reduce measurement accuracy.
[0003] In order to improve the measurement accuracy, it is urgent to develop a loading device for a chip hinge moment balance with axial force. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide a loading device for a chip hinge moment balance with axial force to overcome the defects of the prior art.
[0005] The loading device for a chip hinge moment balance with axial force of the present invention is a combined structure. For the calibration state in the positive axial force direction, it includes a calibration support rod, a calibration joint, a chip hinge moment balance with axial force connected in sequence from back to front, and a conversion joint, a slider, and a loading head connected in sequence from top to bottom below the chip hinge moment balance with axial force; The center of the element of the chip hinge moment balance loading device is used as the origin, and the balance coordinate system is established according to the right-hand rule. The central axis of the calibration support rod coincides with the OZ axis of the balance coordinate system. The ZOX plane is the horizontal plane of the balance coordinate system, the XOY plane is the vertical plane of the balance coordinate system perpendicular to the OZ axis, and the YOZ plane is the vertical plane of the balance coordinate system parallel to the OZ axis.
[0006] Further, the front section of the calibration support rod is a flat plate section, and the corresponding connection surface between the flat plate section and the calibration joint is fixedly connected through plane fitting, pin positioning, and screw tensioning; the rear section of the calibration support rod is a conical section, and the conical section is fixedly connected to the calibration frame.
[0007] Further, the calibration joint is a long strip plate I, and three connection surfaces are arranged in sequence from front to back: connection surface I, connection surface II, and connection surface III; the three connection surfaces are all parallel to the ZOX plane; Among them, connection surface I and connection surface II are located on the upper surface of the long strip plate I and are in the same plane; connection surface III is located on the lower surface of the long strip plate I and matches the flat plate section of the calibration support rod.
[0008] Further, the axial force - carrying plate - type hinge moment balance is a long strip plate II, and three connection surfaces are arranged in sequence from front to back: connection surface IV, connection surface V, and connection surface VI; the three connection surfaces are all parallel to the ZOX plane; Among them, connection surface IV and connection surface VI are located on the lower surface of the long strip plate II and are in the same plane, corresponding to connection surface I and connection surface II of the calibration joint respectively, and each corresponding connection surface is fixedly connected through plane fitting, pin positioning, and screw tensioning; connection surface V is located on the upper surface of the long strip plate II and matches the connection surface of the conversion joint.
[0009] Further, the conversion joint is an I - beam I, with vertical plates on the left and right sides and a horizontal beam in the middle; five connection surfaces and four contact surfaces are arranged on the I - beam I; the five connection surfaces are: connection surface VII, connection surface VIII, connection surface IX, connection surface X, and connection surface XI; the four contact surfaces are: contact surface I, contact surface II, contact surface III, and contact surface IV; Among them, connection surface VII and connection surface XI are parallel to the YOZ plane and are located outside the two vertical plates of the I - beam I; connection surface VIII is located on the lower surface of the horizontal beam and is parallel to the ZOX plane, and connection surface VIII is fixedly connected to connection surface V of the axial force - carrying plate - type hinge moment balance through plane fitting, pin positioning, and bolt assembly tensioning; connection surface IX and connection surface X are symmetrically distributed up and down with the ZOX plane as the symmetry plane, connection surface IX is located on the lower surface of the horizontal beam, and connection surface X is located on the upper surface of the horizontal beam; Contact surface I and contact surface II are respectively located on the front and rear sides of the left vertical plate and are symmetric about the XOY plane front and back; contact surface IV and contact surface III are respectively located on the front and rear sides of the right vertical plate and are symmetric about the XOY plane front and back.
[0010] Further, the slider is an I - beam II, with a horizontal plate I and a horizontal plate II on the upper and lower sides respectively, and a vertical beam in the middle; two connection surfaces and two contact surfaces are arranged on the I - beam II, the two connection surfaces are respectively connection surface XII and connection surface XIII, and the two contact surfaces are respectively contact surface V and contact surface VI (54); Among them, the connecting surface ⅩⅢ is located on the upper surface of the horizontal plate Ⅰ, and the connecting surface Ⅻ is located on the lower surface of the horizontal plate Ⅱ, both being parallel to the ZOX plane; the connecting surface ⅩⅢ and the connecting surface Ⅸ are tightly connected by plane fitting, pin positioning, and a bolt assembly; the contact surfaces Ⅴ and Ⅵ (54) are respectively located on the front and rear sides of the horizontal plate Ⅱ, both being parallel to the YOZ plane.
[0011] Furthermore, the loading head is the horizontal plate Ⅲ; a chute is arranged on the upper surface of the horizontal plate Ⅲ, and the chute is composed of the contact surface Ⅶ, the connecting surface ⅩⅣ, and the contact surface Ⅷ; the connecting surface ⅩⅣ is an intermediate horizontal plane, parallel to the ZOX plane, and three waist-shaped grooves parallel to the OX axis are arranged on the connecting surface ⅩⅣ; the connecting surface ⅩⅣ and the connecting surface Ⅻ are tightly connected by plane fitting, pin positioning, and a bolt assembly passing through the waist-shaped grooves from bottom to top; the contact surfaces Ⅶ and Ⅷ are the front and rear side surfaces, parallel to the XOY plane; the slider slides left and right in the chute; the contact surface Ⅴ of the slider is in sliding contact with the contact surface Ⅶ, and the contact surface Ⅵ (54) of the slider is in sliding contact with the contact surface Ⅷ; the contact surfaces Ⅰ and Ⅳ of the adapter are in sliding contact with the contact surface Ⅶ, and the contact surfaces Ⅱ and Ⅳ of the adapter are in sliding contact with the contact surface Ⅷ; Four corners of the horizontal plate Ⅲ respectively extend outwards by one loading arm; one loading point is arranged on the upper surface of each of the four loading arms, and the numbers of the four loading points are respectively loading point Ⅰ, loading point Ⅱ, loading point Ⅲ, and loading point Ⅳ. The tip points of the four loading points are located in the ZOX plane; the centroid of the four loading points is the center of the loading head.
[0012] Furthermore, for the calibration state of the negative axial force direction of the chip hinge moment balance loading device, based on the calibration state of the positive axial force direction, the calibration support rod, the calibration joint, and the chip hinge moment balance with axial force are installed reversely, and the connecting surface Ⅹ of the adapter is connected to the connecting surface ⅩⅢ of the slider; For the calibration state of the positive axial force direction, based on the calibration state of the positive axial force direction, the slider is removed, and the connecting surface Ⅶ of the adapter is connected to the connecting surface ⅩⅣ of the loading head; the left vertical plate of the adapter slides left and right in the chute, the contact surface Ⅰ of the adapter is in sliding contact with the contact surface Ⅶ, and the contact surface Ⅱ of the slider is in sliding contact with the contact surface Ⅷ; For the calibration state of the negative axial force direction, based on the calibration state of the positive axial force direction, the slider is removed, the connecting surface Ⅺ of the adapter is connected to the connecting surface ⅩⅣ of the loading head, the adapter slides left and right in the chute, the contact surface Ⅳ of the adapter is in sliding contact with the contact surface Ⅶ, and the contact surface Ⅲ of the slider is in sliding contact with the contact surface Ⅷ.
[0013] The loading device of the chip hinge moment balance with axial force in the present invention directly applies the gravity of the weights to the loading device, avoiding the measurement error of the balance introduced by the pulley friction, realizing the calibration in four directions of the chip hinge moment balance with axial force, effectively improving the measurement accuracy of the hinge moment, and having engineering practical value. Brief Description of the Drawings
[0014] Figure 1 It is a schematic installation diagram of the positive normal force direction of the loading device of the chip hinge moment balance with axial force in the present invention; Figure 2 It is a schematic structural diagram of the calibration joint in the loading device of the chip hinge moment balance with axial force in the present invention; Figure 3 It is a schematic structural diagram of the chip hinge moment balance with axial force in the loading device of the chip hinge moment balance with axial force in the present invention; Figure 4 It is a schematic structural diagram of the conversion joint in the loading device of the chip hinge moment balance with axial force in the present invention; Figure 5 It is a schematic structural diagram of the slider in the loading device of the chip hinge moment balance with axial force in the present invention; Figure 6 It is a schematic structural diagram of the loading head in the loading device of the chip hinge moment balance with axial force in the present invention; Figure 7 It is a schematic installation diagram of the negative normal force direction of the loading device of the chip hinge moment balance with axial force in the present invention; Figure 8 It is a schematic installation diagram of the positive axial force direction of the loading device of the chip hinge moment balance with axial force in the present invention; Figure 9 It is a schematic installation diagram of the negative axial force direction of the loading device of the chip hinge moment balance with axial force in the present invention.
[0015] In the figure, 1. Calibration support rod; 2. Calibration joint; 3. Chip hinge moment balance with axial force; 4. Conversion joint; 5. Slider; 6. Loading head; 7. Loading arm; 8. Chute; 21. Connection surface Ⅰ; 22. Connection surface Ⅱ; 23. Connection surface Ⅲ; 31. Connection surface Ⅳ; 32. Connection surface Ⅴ; 33. Connection surface Ⅵ; 41. Connection surface Ⅶ; 42. Contact surface Ⅰ; 43. Contact surface Ⅱ; 44. Connection surface Ⅷ; 45. Connection surface Ⅸ; 46. Connection surface Ⅹ; 47. Contact surface Ⅲ; 48. Contact surface Ⅳ; 49. Connection surface Ⅺ; 51. Contact surface Ⅴ; 52. Connection surface Ⅻ; 53. Connection surface ⅩⅢ; 54. Contact surface Ⅵ; 71. Loading point Ⅰ; 72. Loading point Ⅱ; 73. Loading point Ⅲ; 74. Loading point Ⅳ 81. Contact surface Ⅶ; 82. Connecting surface ⅩⅣ; 83. Contact surface Ⅷ. Specific implementation mode
[0016] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0017] Embodiment: As Figure 1 shown, the loading device of the chip hinge moment balance with axial force in this embodiment is a combined structure. For the calibration state in the positive axial force direction, it includes a calibration support rod 1, a calibration joint 2, a chip hinge moment balance 3 with axial force connected in sequence from back to front, and a conversion joint 4, a slider 5 and a loading head 6 connected in sequence from top to bottom below the chip hinge moment balance 3 with axial force; The origin of the balance coordinate system of the chip hinge moment balance loading device is the center of the element of the chip hinge moment balance 3 with axial force. According to the right - hand rule, a balance coordinate system is established. The central axis of the calibration support rod 1 coincides with the OZ axis of the balance coordinate system. The ZOX plane is the horizontal plane of the balance coordinate system, the XOY plane is the vertical plane of the balance coordinate system perpendicular to the OZ axis, and the YOZ plane is the vertical plane of the balance coordinate system parallel to the OZ axis.
[0018] Furthermore, the front section of the calibration support rod 1 is a flat plate section. The corresponding connecting surface of the flat plate section and the calibration joint 2 is fixedly connected by plane fitting, pin positioning and screw tensioning; the rear section of the calibration support rod 1 is a tapered section, and the tapered section is fixedly connected to the calibration frame.
[0019] Furthermore, as Figure 2 shown, the calibration joint 2 is a long strip plate Ⅰ, and three connecting surfaces are arranged in sequence from front to back: connecting surface Ⅰ 21, connecting surface Ⅱ 22 and connecting surface Ⅲ 23; the three connecting surfaces are all parallel to the ZOX plane; Among them, the connecting surface Ⅰ 21 and the connecting surface Ⅱ 22 are located on the upper surface of the long strip plate Ⅰ and are in the same plane; the connecting surface Ⅲ 23 is located on the lower surface of the long strip plate Ⅰ and matches the flat plate section of the calibration support rod 1.
[0020] Furthermore, as Figure 3 shown, the chip hinge moment balance 3 with axial force is a long strip plate Ⅱ, and three connecting surfaces are arranged in sequence from front to back: connecting surface Ⅳ 31, connecting surface Ⅴ 32 and connecting surface Ⅵ 33; the three connecting surfaces are all parallel to the ZOX plane; Among them, the connecting surface Ⅳ 31 and the connecting surface Ⅵ 33 are located on the lower surface of the long strip plate Ⅱ and are in the same plane, corresponding to the connecting surface Ⅰ 21 and the connecting surface Ⅱ 22 of the calibration joint 2 respectively. Each corresponding connecting surface is fixedly connected by plane fitting, pin positioning and screw tensioning; the connecting surface Ⅴ 32 is located on the upper surface of the long strip plate Ⅱ and matches the connecting surface of the conversion joint 4.
[0021] Further, as Figure 4 shown, the adapter 4 is an I-beam Ⅰ, with vertical plates on both the left and right sides and a horizontal beam in the middle; there are 5 connecting surfaces and 4 contact surfaces on the I-beam Ⅰ; the 5 connecting surfaces are: connecting surface Ⅶ41, connecting surface Ⅷ44, connecting surface Ⅸ45, connecting surface Ⅹ46, and connecting surface Ⅺ49; the 4 contact surfaces are: contact surface Ⅰ42, contact surface Ⅱ43, contact surface Ⅲ47, and contact surface Ⅳ48; Among them, the connecting surface Ⅶ41 and the connecting surface Ⅺ49 are parallel to the YOZ plane and are located outside the two vertical plates of the I-beam Ⅰ; the connecting surface Ⅷ44 is located on the lower surface of the horizontal beam and is parallel to the ZOX plane. The connecting surface Ⅷ44 is fixedly connected to the connecting surface Ⅴ32 of the plate-type hinge moment balance 3 with axial force through plane fitting, pin positioning, and bolt assembly tightening; the connecting surfaces Ⅸ45 and Ⅹ46 are symmetrically distributed up and down with the ZOX plane as the symmetry plane. The connecting surface Ⅸ45 is located on the lower surface of the horizontal beam, and the connecting surface Ⅹ46 is located on the upper surface of the horizontal beam; The contact surface Ⅰ42 and the contact surface Ⅱ43 are respectively located on the front and rear sides of the left vertical plate and are symmetric about the XOY plane front and back; the contact surface Ⅳ48 and the contact surface Ⅲ47 are respectively located on the front and rear sides of the right vertical plate and are symmetric about the XOY plane front and back.
[0022] Further, as Figure 5 shown, the slider 5 is an I-beam Ⅱ, with a horizontal plate Ⅰ and a horizontal plate Ⅱ respectively on the upper and lower sides and a vertical beam in the middle; there are 2 connecting surfaces and 2 contact surfaces on the I-beam Ⅱ. The 2 connecting surfaces are respectively the connecting surface Ⅻ52 and the connecting surface ⅩⅢ53, and the 2 contact surfaces are respectively the contact surface Ⅴ51 and the contact surface Ⅵ54; Among them, the connecting surface ⅩⅢ53 is located on the upper surface of the horizontal plate Ⅰ, and the connecting surface Ⅻ52 is located on the lower surface of the horizontal plate Ⅱ, both being parallel to the ZOX plane; the connecting surface ⅩⅢ53 is fixedly connected to the connecting surface Ⅸ45 through plane fitting, pin positioning, and bolt assembly tightening; the contact surface Ⅴ51 and the contact surface Ⅵ54 are respectively located on the front side and the rear side of the horizontal plate Ⅱ and are both parallel to the YOZ plane.
[0023] Further, as Figure 6As shown in the figure, the loading head 6 is a horizontal plate III; a sliding groove 8 is provided on the upper surface of the horizontal plate III, and the sliding groove 8 is composed of a contact surface VII 81, a connecting surface XIV 82, and a contact surface VIII 83; the connecting surface XIV 82 is an intermediate horizontal plane, parallel to the ZOX plane, and three waist-shaped grooves parallel to the OX axis are provided on the connecting surface XIV 82. The connecting surface XIV 82 and the connecting surface XII 52 are tightly connected by plane fitting, pin positioning, and a bolt assembly passing through the waist-shaped groove from bottom to top; the contact surfaces VII 81 and VIII 83 are the front and rear side surfaces, parallel to the XOY plane; the slider 5 slides left and right in the sliding groove 8; the contact surface V 51 of the slider 5 is in sliding contact with the contact surface VII 81, and the contact surface VI 54 of the slider 5 is in sliding contact with the contact surface VIII 83; the contact surfaces I 42 and IV 48 of the adapter 4 are in sliding contact with the contact surface VII 81, and the contact surfaces II 43 and IV 48 of the adapter 4 are in sliding contact with the contact surface VIII 83. Four corners of the horizontal plate III respectively extend outward by one loading support arm 7; one loading point is provided on the upper surface of each of the four loading support arms 7, and the numbers of the four loading points are respectively loading point I 71, loading point II 72, loading point III 73, and loading point IV 74. The apex points of the four loading points are located in the ZOX plane; the centroid of the four loading points is the center of the loading head 6.
[0024] Furthermore, as Figure 7 shown, for the calibration state of the negative axial force direction of the chip hinge torque balance loading device, based on the calibration state of the positive axial force direction, the calibration support rod 1, the calibration joint 2, and the chip hinge torque balance 3 with axial force are installed reversely, and the connecting surface X 46 of the adapter 4 is connected to the connecting surface XIII 53 of the slider 5. As Figure 8 shown, for the calibration state of the positive axial force direction, based on the calibration state of the positive axial force direction, the slider 5 is removed, and the connecting surface VII 41 of the adapter 4 is connected to the connecting surface XIV 82 of the loading head 6; the left vertical plate of the adapter 4 slides left and right in the sliding groove 8, the contact surface I 42 of the adapter 4 is in sliding contact with the contact surface VII 81, and the contact surface II 43 of the slider 5 is in sliding contact with the contact surface VIII 83. As Figure 9 shown, for the calibration state of the negative axial force direction, based on the calibration state of the positive axial force direction, the slider 5 is removed, the connecting surface XI 49 of the adapter 4 is connected to the connecting surface XIV 82 of the loading head 6, the adapter 4 slides left and right in the sliding groove 8, the contact surface IV 48 of the adapter 4 is in sliding contact with the contact surface VII 81, and the contact surface III 47 of the slider 5 is in sliding contact with the contact surface VIII 83.
[0025] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. For those skilled in the art, without departing from the principle of the present invention, all the features disclosed in the present invention, or all the steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way. The present invention is not limited to the specific details and the illustrated examples described herein.
Claims
1. A sheet hinge moment balance loading device with axial force, characterized in that, The described chip hinge moment balance loading device is a combined structure. For the calibration state of the positive axial force direction, it includes a calibration support rod (1), a calibration joint (2), a chip hinge moment balance with axial force (3) connected in sequence from back to front, and a conversion joint (4), a slider (5), and a loading head (6) connected in sequence from top to bottom below the chip hinge moment balance with axial force (3). Taking the element center of the chip hinge moment balance with axial force (3) as the origin, the chip hinge moment balance loading device establishes a balance coordinate system according to the right - hand rule. The central axis of the calibration support rod (1) coincides with the OZ axis of the balance coordinate system. The ZOX plane is the horizontal plane of the balance coordinate system, the XOY plane is the vertical plane of the balance coordinate system perpendicular to the OZ axis, and the YOZ plane is the vertical plane of the balance coordinate system parallel to the OZ axis.
2. The loading device of the chip hinge moment balance with axial force according to claim 1, characterized in that The front section of the described calibration support rod (1) is a flat plate section. The corresponding connection surface between the flat plate section and the calibration joint (2) is fixedly connected through plane fitting, pin positioning, and screw tightening. The rear section of the calibration support rod (1) is a conical section, and the conical section is fixedly connected to the calibration frame.
3. The sheet hinge moment balance loading device with axial force according to claim 2, wherein The described calibration joint (2) is a long strip plate I, with three connection surfaces arranged in sequence from front to back: connection surface I (21), connection surface II (22), and connection surface III (23). All three connection surfaces are parallel to the ZOX plane. Among them, connection surface I (21) and connection surface II (22) are located on the upper surface of the long strip plate I and are in the same plane. Connection surface III (23) is located on the lower surface of the long strip plate I and matches the flat plate section of the calibration support rod (1).
4. The sheet hinge moment balance loading device with axial force according to claim 3, characterized in that, The described chip hinge moment balance with axial force (3) is a long strip plate II, with three connection surfaces arranged in sequence from front to back: connection surface IV (31), connection surface V (32), and connection surface VI (33). All three connection surfaces are parallel to the ZOX plane. Among them, connection surface IV (31) and connection surface VI (33) are located on the lower surface of the long strip plate II and are in the same plane, corresponding to connection surface I (21) and connection surface II (22) of the calibration joint (2) respectively. Each corresponding connection surface is fixedly connected through plane fitting, pin positioning, and screw tightening. Connection surface V (32) is located on the upper surface of the long strip plate II and matches the connection surface of the conversion joint (4).
5. The sheet hinge moment balance loading device with axial force according to claim 4, characterized in that The described conversion joint (4) is an I - beam I, with vertical plates on the left and right sides and a horizontal beam in the middle. There are five connection surfaces and four contact surfaces on the I - beam I. The five connection surfaces are: connection surface VII (41), connection surface VIII (44), connection surface IX (45), connection surface X (46), and connection surface XI (49). The four contact surfaces are: contact surface I (42), contact surface II (43), contact surface III (47), and contact surface IV (48). Among them, the connecting surface VII (41) and the connecting surface XI (49) are parallel to the YOZ plane and are located outside the two vertical plates of the I-beam I; the connecting surface VIII (44) is located on the lower surface of the horizontal beam and is parallel to the ZOX plane. The connecting surface VIII (44) and the connecting surface V (32) of the axial-force type hinge moment balance (3) are tightly connected by plane fitting, pin positioning and bolt assembly tensioning; the connecting surfaces IX (45) and X (46) are symmetrically distributed up and down with the ZOX plane as the symmetry plane. The connecting surface IX (45) is located on the lower surface of the horizontal beam, and the connecting surface X (46) is located on the upper surface of the horizontal beam; The contact surface I (42) and the contact surface II (43) are respectively located on the front and rear sides of the left vertical plate and are symmetric about the XOY plane before and after; the contact surface IV (48) and the contact surface III (47) are respectively located on the front and rear sides of the right vertical plate and are symmetric about the XOY plane before and after.
6. The sheet hinge moment balance loading device with axial force according to claim 5, characterized in that, The slider (5) is an I-beam II, with a horizontal plate I and a horizontal plate II on the upper and lower sides respectively, and a vertical beam in the middle; two connecting surfaces and two contact surfaces are provided on the I-beam II. The two connecting surfaces are the connecting surface XII (52) and the connecting surface XIII (53) respectively, and the two contact surfaces are the contact surface V (51) and the contact surface VI (54) respectively; Among them, the connecting surface XIII (53) is located on the upper surface of the horizontal plate I, and the connecting surface XII (52) is located on the lower surface of the horizontal plate II, both of which are parallel to the ZOX plane; the connecting surface XIII (53) and the connecting surface IX (45) are tightly connected by plane fitting, pin positioning and bolt assembly tensioning through the waist-shaped grooves; the contact surface V (51) and the contact surface VI (54) are respectively located on the front side and the rear side of the horizontal plate II, both of which are parallel to the YOZ plane.
7. The sheet hinge moment balance loading device with axial force according to claim 6, characterized in that, The loading head (6) is a horizontal plate III; a chute (8) is provided on the upper surface of the horizontal plate III. The chute (8) is composed of a contact surface VII (81), a connecting surface XIV (82) and a contact surface VIII (83); the connecting surface XIV (82) is an intermediate horizontal plane and is parallel to the ZOX plane. Three waist-shaped grooves parallel to the OX axis are provided on the connecting surface XIV (82). The connecting surface XIV (82) and the connecting surface XII (52) are tightly connected by plane fitting, pin positioning and bolt assembly tensioning through the waist-shaped grooves from bottom to top; the contact surface VII (81) and the contact surface VIII (83) are the front and rear side surfaces and are parallel to the XOY plane; the slider (5) slides left and right in the chute (8); the contact surface V (51) of the slider (5) is in sliding contact with the contact surface VII (81), and the contact surface VI (54) of the slider (5) is in sliding contact with the contact surface VIII (83); the contact surface I (42) and the contact surface IV (48) of the adapter (4) are in sliding contact with the contact surface VII (81), and the contact surface II (43) and the contact surface IV (48) of the adapter (4) are in sliding contact with the contact surface VIII (83); Four corners of the horizontal plate Ⅲ respectively extend outwards by one loading support arm (7); one loading point is arranged on the upper surface of each of the four loading support arms (7), and the numbers of the four loading points are respectively loading point Ⅰ (71), loading point Ⅱ (72), loading point Ⅲ (73) and loading point Ⅳ (74). The tip points of the four loading points are located in the ZOX plane; the centroid of the four loading points is the center of the loading head (6).
8. The sheet hinge moment balance loading device with axial force according to claim 7, characterized in that, For the calibration state of the negative axial force direction of the chip hinge moment balance loading device, based on the calibration state of the positive axial force direction, the calibration support rod (1), the calibration joint (2), the chip hinge moment balance (3) with axial force are installed in reverse, and the joint surface Ⅹ (46) of the adapter (4) is connected to the joint surface ⅩⅢ (53) of the slider (5); For the calibration state of the positive axial force direction, based on the calibration state of the positive axial force direction, the slider (5) is removed, and the joint surface Ⅶ (41) of the adapter (4) is connected to the joint surface ⅩⅣ (82) of the loading head (6); the left vertical plate of the adapter (4) slides left and right in the chute (8), the contact surface Ⅰ (42) of the adapter (4) is in sliding contact with the contact surface Ⅶ (81), and the contact surface Ⅱ (43) of the slider (5) is in sliding contact with the contact surface Ⅷ (83); For the calibration state of the negative axial force direction, based on the calibration state of the positive axial force direction, the slider (5) is removed, the joint surface Ⅺ (49) of the adapter (4) is connected to the joint surface ⅩⅣ (82) of the loading head (6), the adapter (4) slides left and right in the chute (8), the contact surface Ⅳ (48) of the adapter (4) is in sliding contact with the contact surface Ⅶ (81), and the contact surface Ⅲ (47) of the slider (5) is in sliding contact with the contact surface Ⅷ (83).