Device for measuring the torque and tension of the on-board cables of dual-super-satellites

Abstract

The application provides a device for measuring the moment and tension of a cable on a double super-satellite, comprising a gravity balance balloon, a displacement device and a force sensor; the displacement device comprises at least two moving platforms, two ends of the measured cable are connected to the two different moving platforms respectively, the gravity balance balloon is used to unload the gravity of the measured cable to simulate a weightless environment; the force sensor is installed on any moving platform at least one, and the moment and / or tension data generated by the measured cable are measured. The device has the characteristics of flexible use and convenient disassembly in the form of a hole mounting plate, and can simulate the bending conditions of various cables; the force condition changes of the cable when the structure and mechanism have a slight displacement and deformation can be simulated by operating the moving platform; the force sensor has high measurement precision, and data recording is convenient, and can satisfy the moment and tension measurement of the cable structure connecting the double super-satellite cabins.

Description

Technical Field

[0001] This invention relates to the field of mechanical testing in satellite engineering, specifically to a device for measuring the torque and tension of onboard cables in dual-super satellites. Background Technology

[0002] Traditional satellites typically employ a configuration where the payload platform is directly fixed, and the payload's pointing accuracy and stability rely on the satellite platform's attitude control. The dual-supersatellite utilizes a high-precision, high-bandwidth non-contact magnetic levitation mechanism, achieving dynamic and static isolation between the satellite platform and payload compartments, resulting in a satellite attitude pointing accuracy better than 5×10⁻⁶. -4 Degrees, attitude stability better than 5×10 -6 The technical specification is degrees per second. To achieve the dual-super-high technical specifications, it is necessary to conduct torque and tension tests on the inter-cabin cable during bending to verify its mechanical properties.

[0003] A Chinese patent application with publication number CN107941392B discloses a cable bending moment testing platform, which includes a rotation transmission unit, a turntable unit, a slider unit, and a testing unit. The slider unit includes a guide rail, a slider, and a screw-nut transmission mechanism. The guide rail is fixed to a back plate vertically fixed to the ground. The screw-nut transmission mechanism includes a screw, a transmission nut, and a bevel gear transmission pair. The screw stands vertically to the side of the back plate, and the transmission nut is fixedly connected to the slider. However, this platform can only test the bending moment generated when a cable is coiled along a cylinder, limiting its application scenarios.

[0004] Chinese patent application CN207703374U discloses a device for testing the bending moment of aerospace cables, comprising a test bench, a control box, a temperature control box, and an industrial computer. The control box is connected to the test bench via control cables and data acquisition cables, the industrial computer is connected to the control box via a network cable, and the temperature control box is connected to the test bench via control cables and data acquisition cables. The temperature control box controls the electrical components within the test bench to operate at normal operating temperatures. The aerospace cable to be tested is mounted on the test bench. The industrial computer sends test commands to the control box via the network cable. The control box controls the test bench to rotate the aerospace cable and tests the torque signal of the aerospace cable. The torque signal and rotation angle information are output to the control box, amplified, converted from analog to digital, and then output to the industrial computer. The test bench is placed in a vacuum and cryogenic environment corresponding to the space environment in which the aerospace cable is used. This platform includes a dedicated industrial computer, control box, and test bench, but it can only test the bending moment generated when the cable is coiled along a cylinder.

[0005] Existing Chinese patent application CN205981936U discloses a special cable tension bending test device, including a tensile testing machine, a fixed pile, a pulley block, a winch, a traction rope, a special cable, and a bending test wheel. The pulley block includes a first pulley and a second pulley connected to each other. The tensile testing machine is connected to the fixed pile by a steel wire rope, which is connected to the first pulley. The special cable and the steel wire rope are connected between the second pulley and the bending test wheel. The special cable is also connected to the winch via the traction rope. This device can only qualitatively evaluate the cable's performance under tension.

[0006] There is an urgent need for an experimental device that can measure the torque and tension of the cable configuration for connecting two supersonic satellite modules. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the purpose of this invention is to provide a device for measuring the torque and tension of onboard cables of dual supersonic satellites.

[0008] According to the present invention, an apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites includes a gravity balancing balloon, a gantry, a displacement device, and force sensors. The displacement device includes at least two motion platforms, with both ends of the cable under test connected to two different motion platforms respectively. The gravity balancing balloon is used to unload the gravity of the cable under test to simulate a weightless environment. The gantry provides support for the installation of the displacement device. At least one force sensor is installed on each motion platform to measure the torque and / or tension data generated by the cable under test.

[0009] Preferably, it also includes a mounting plate, the force sensor is fixedly connected to the motion platform, the mounting plate is fixedly connected to the mounting plate, and the cable under test is fixedly mounted on the mounting plate.

[0010] Preferably, the mounting plate is provided with optical holes, which allow for the installation of bolts and nuts, and the cable under test can be bundled onto the bolts.

[0011] Preferably, the motion platform includes translation in three directions and rotation in three directions.

[0012] Preferably, the translation range of the motion platform in any direction is ±10mm.

[0013] Preferably, the displacement device includes two opposing motion platforms, which are arranged vertically.

[0014] Preferably, the upper motion platform is fixed to the crossbeam of the gantry.

[0015] Preferably, the height of the gantry frame can be adjusted.

[0016] Preferably, the force sensor is disposed on the horizontal surface of the motion platform.

[0017] Preferably, the force sensor transmits the detected torque and / or tension data to the computer via a network port or serial port.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention, by adopting a perforated mounting plate, features flexible use and convenient disassembly, and can simulate various cable bending situations;

[0020] 2. By operating the motion platform, the changes in the cable's stress state when the structure and mechanism undergo minute displacements and deformations can be simulated;

[0021] 3. The force sensor has high measurement accuracy and convenient data recording, and can meet the requirements for torque and tension measurement in the configuration of the inter-submarine connection cable of the dual supersonic satellites. Attached Figure Description

[0022] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram illustrating the horizontal measuring device of the present invention.

[0024] Figure 2 This is a schematic diagram illustrating the vertical measuring device that is the main feature of this invention.

[0025] Figure 1 The following components are shown in the diagram: 1. Force sensor; 2. Cable under test; 3. Motion platform; 4. Mounting plate; 6. Gravity balancing balloon.

[0026] Figure 2 The following components are shown: 1. Force sensor; 2. Cable under test; 3. Motion platform; 4. Mounting plate; 5. Gantry. Detailed Implementation

[0027] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1As shown, an apparatus for measuring the torque and tension of onboard cables of a dual-satellite system according to the present invention includes a gravity balancing balloon 6, a displacement device, and a force sensor 1; the displacement device includes at least two motion platforms 3, with the two ends of the cable 2 being measured connected to two different motion platforms 3 respectively; the gravity balancing balloon 6 is used to unload the gravity on the cable 2 being measured to simulate a weightless environment; at least one force sensor 1 is installed on each motion platform 3 to measure the torque and / or tension data generated by the cable 2 being measured.

[0030] Specifically, the displacement device is mounted on the frame, and the gravity balancing balloon 6 is connected to the cable under test 2. The gravity balancing balloon 6 is used to unload the gravity on the cable under test 2 to simulate a weightless environment. The displacement device is used to generate minute displacements at the cable bundling location. The force sensor 1 can measure the torque and tension data generated by the cable and send them to the computer for real-time display via network port or serial port.

[0031] Furthermore, it also includes a mounting plate 4. The force sensor 1 is fixedly connected to the motion platform 3, and the mounting plates 4 are fixedly connected to each other. The cable under test 2 is fixedly mounted on the mounting plate 4. The mounting plate 4 is provided with optical holes, which allow the installation of bolts and nuts. The cable under test 2 can be bundled to the bolts to achieve cable installation and fixation. By bundling the cable at different positions, different bending conditions can be simulated. The diameter of the optical holes and the length of the bolts are adjusted according to the thickness and length of the bundled cable.

[0032] Furthermore, the motion platform 3 includes translation in three directions and rotation in three directions. The translation range of the motion platform 3 in any direction is ±10mm. In some feasible embodiments, a three-degree-of-freedom motion table can also be used to simulate cable bending.

[0033] It should be further noted that the force sensor 1 has a measurement accuracy of 0.01N and a torque measurement accuracy of 0.001Nm. The sensor is connected to the computer via a network cable or a 485 serial cable and the measured data is displayed by software. The data can be recorded manually or automatically by the software.

[0034] This application provides a novel device for measuring cable torque and tension. Employing a perforated mounting plate 4, it offers flexibility and ease of disassembly, and can simulate various cable bending scenarios. By manipulating the motion platform 3, it can simulate changes in cable stress when the structure and mechanism experience minute displacements and deformations. The six-dimensional force sensor 1 provides high measurement accuracy and convenient data recording. It can meet the torque and tension measurement requirements for inter-submarine connection cables in dual-satellite configurations.

[0035] Example 2

[0036] like Figure 2As shown, in another feasible embodiment, the displacement device includes two opposing motion platforms 3, arranged vertically. The upper motion platform 3 is fixed to the crossbeam of the gantry 5. The height of the gantry 5 is adjustable to adjust the distance between the two motion platforms 3. The two motion platforms 3 generate displacement by rotating a micrometer to simulate different bending conditions of the cable under the same bundling method. A force sensor 1 is positioned on the horizontal plane of the motion platform 3. The force sensor 1 transmits the detected torque and / or tension data to a computer via a network port or serial port. Specifically, the force sensor 1 is connected to the computer via a network cable or an RS458 serial cable and transmits the measured force and torque data to a dedicated software interface for display.

[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A device for measuring the torque and tension of onboard cables of a dual-satellite system, characterized in that, Includes a gravity balance balloon (6), a displacement device, and a force sensor (1); The displacement device includes at least two motion platforms (3), and the two ends of the cable under test (2) are respectively connected to two different motion platforms (3). The gravity balance balloon (6) is used to unload the gravity on the cable under test (2) to simulate a weightless environment. At least one force sensor (1) is installed on any motion platform (3) to measure the torque and / or tension data generated by the cable under test (2); It also includes a mounting plate (4), the force sensor (1) is fixedly connected to the motion platform (3), the mounting plate (4) is fixedly connected to the force sensor (1), and the cable under test (2) is fixedly installed on the mounting plate (4); The mounting plate (4) is provided with light holes, which allow bolts and nuts to be installed, and the cable under test (2) can be tied to the bolts; The motion platform (3) includes translation in three directions and rotation in three directions.

2. The apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites as described in claim 1, characterized in that, The translation range of the motion platform (3) in any direction is ±10mm.

3. The apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites as described in claim 1, characterized in that, The displacement device includes two opposing motion platforms (3), which can be arranged vertically or horizontally.

4. The apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites as described in claim 3, characterized in that, The upper motion platform (3) is fixed to the crossbeam of the gantry (5).

5. The apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites as described in claim 4, characterized in that, The height of the gantry (5) can be adjusted.

6. The apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites as described in claim 1, characterized in that, The force sensor (1) is set on the horizontal surface of the motion platform (3).

7. The apparatus for measuring the torque and tension of onboard cables of dual supersonic satellites as described in claim 1, characterized in that, The force sensor (1) sends the detected torque and / or tension data to the computer via Ethernet or serial port.

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