Space on-orbit turntable limiting mechanism

Abstract

The invention discloses a space on-orbit turntable limiting mechanism in the technical field of space on-orbit, which comprises a track, a suspension disc and limiting discs, the two sides of the suspension disc are fixedly connected with the limiting discs, the bottoms of the suspension disc and the limiting discs are provided with suspension grooves of the same track, and the suspension disc and the limiting discs are in sliding fit with the suspension grooves. The periphery of the inner wall of a suspension groove at the bottom of the suspension disc and the outer wall of the track are fixedly connected with a plurality of electromagnets for forming magnetic suspension, the bottom of the suspension groove is provided with a ranging groove, and the bottom of the track is fixedly connected with an ultrasonic range finder below the ranging groove; a plurality of potential sensors are fixedly connected to the periphery of the inner wall of the suspension groove at the bottom of the limiting disc, a plurality of friction point positions are fixedly connected to the sides, close to the rails, of the potential sensors, and friction belts are fixedly connected to the outer walls of the rails. The device is scientific and reasonable, and the current intensity of the electromagnet is controlled through the controller, so that the suspension gap between the turntable and the track is dynamically adjusted, and accurate dynamic limiting of the space on-track turntable is realized.

Description

Technical Field

[0001] The invention belongs to the field of space on-orbit technology, in particular to a space on-orbit turntable limiting mechanism. Background Art

[0002] With the further development and utilization of space resources by humans, the demand for the construction of large-scale space facilities is increasing. The space on-orbit turntable plays an important role in this process. It can assist in completing tasks such as docking, transfer and assembly between modules, and ensure the smooth construction of large-scale space facilities on-orbit. The space on-orbit turntable limit mechanism is a key component used in space robots or spacecraft to limit the range of motion of the turntable. These mechanisms are usually used to ensure that the turntable operates within a safe range of motion to avoid structural damage or mission failure caused by exceeding the design limits. The design and application of on-orbit turntable limit mechanisms are crucial to the success of space missions, especially when performing on-orbit service, assembly and maintenance operations.

[0003] Although turntable limit mechanisms play an important role in space applications, they also face a series of technical challenges and problems. Under the extreme conditions of the on-orbit environment, the turntable limit mechanism must have a high degree of reliability and safety to prevent failures in critical missions. The turntable limit mechanism needs to be able to accurately control the position and movement of the turntable to ensure the precise execution of the mission during the movement process.

[0004] In summary, the fact that the limit of the turntable limit mechanism cannot be accurately limited dynamically has become a problem that the technicians in this field need to solve urgently. Therefore, it is necessary to propose a space on-orbit turntable limit mechanism. Summary of the invention

[0005] In order to solve the above problems, the present invention discloses a space on-track turntable limiting mechanism, which generates electric energy through the friction point and friction belt on the potential sensor through the principle of frictional electricity, and the energy recovery device collects and stores the electric energy in the battery, and then the controller measures the offset distance between the suspension plate and the limit plate and the track through the feedback of the potential sensor and the ultrasonic rangefinder, and the controller controls the switch and current intensity of the electromagnet, so as to dynamically adjust the suspension gap between the suspension plate and the limit plate and the track, thereby realizing the precise dynamic limiting of the space on-track turntable.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: A space on-track turntable limiting mechanism comprises a track, a suspension plate and a limiting plate, both sides of the suspension plate are fixedly connected to the limiting plates, the bottoms of the suspension plate and the limiting plates are provided with suspension grooves, the suspension plate and the limiting plate are slidably matched with the suspension grooves, a plurality of electromagnets for forming magnetic suspension are fixedly connected around the inner wall of the suspension groove at the bottom of the suspension plate and the outer wall of the track, a distance measuring groove is provided at the bottom of the suspension groove, an ultrasonic distance meter is fixedly connected to the bottom of the track, and the ultrasonic distance meter is used to monitor the motion trajectory of the distance measuring groove; A plurality of potential sensors are fixedly connected around the inner wall of the suspension groove at the bottom of the limit plate, a plurality of friction points are fixedly connected to the side of the potential sensor close to the track, a friction belt for generating electricity by friction with the friction points is fixedly connected to the outer wall of the track, an energy recovery device is fixedly connected to the bottom of the limit plate, the energy recovery device is electrically connected to the potential sensor, a controller and a battery are fixedly connected to one side of the inner wall of the suspension plate and the limit plate, and the potential sensor, the energy recovery device, the ultrasonic rangefinder, the electromagnet and the battery are all electrically connected to the controller.

[0007] The following principles and beneficial effects are achieved by adopting the above scheme: Basic principle: Electromagnets are fixed around the inner wall of the suspension groove at the bottom of the suspension plate and the limit plate and the outer wall of the track. These electromagnets control the current intensity through the controller to generate a magnetic field, so that the suspension plate and the limit plate can be magnetically suspended on the track. The potential sensor at the bottom of the limit plate is provided with friction points, which contact the friction belt on the outer wall of the track and generate electricity through friction. The energy recovery device is electrically connected to the potential sensor, collects the electric energy generated by frictional electricity, and boosts the direct current through a transformer, and finally stores it in the battery. According to the feedback from the potential sensor and the ultrasonic rangefinder, the controller dynamically adjusts the current intensity of the electromagnet through the intelligent control algorithm module, thereby changing the suspension gap between the suspension plate and the limit plate and the track to achieve dynamic limit.

[0008] Furthermore, a plurality of counterweights for adjusting the movement posture are embedded in the inner walls of the suspension plate and the limiting plate.

[0009] Beneficial effect: While adjusting the current intensity of the electromagnet to control the suspension gap, the controller can also cooperate with the counterweight to further optimize the motion posture of the suspension plate and the limit plate. This multi-parameter collaborative control method can improve the control accuracy of the system and enable the system to more accurately achieve the preset motion trajectory and posture.

[0010] Furthermore, an elastic layer for reducing track wear is fixedly connected to the inner walls of the suspension grooves of the suspension plate and the limiting plate.

[0011] Beneficial effects: The elastic layer, as the direct contact surface between the suspension plate and the limit plate and the track, can absorb and disperse the friction and impact force generated by relative movement. This buffering effect significantly reduces the wear of the track surface and extends the service life of the track.

[0012] Furthermore, a transformer is provided in the energy recovery device, and the transformer is used to boost the direct current generated by the potential sensor through frictional electricity, and then store it through a battery.

[0013] Beneficial effects: The transformer can boost the voltage of direct current, ensuring that the electric energy generated by frictional electricity efficiently reaches the voltage standard acceptable to the battery, thereby improving the efficiency of electric energy storage.

[0014] Furthermore, the electromagnet is made of nickel-iron alloy, and the controller is preset with an intelligent control algorithm module, which dynamically adjusts the current of the electromagnet according to feedback from the potentiometer sensor and the ultrasonic rangefinder.

[0015] Beneficial effects: Alloys containing nickel and iron have extremely high magnetic permeability and low hysteresis loss, suitable for precision electromagnetic applications. This allows the electromagnet to more effectively resist external interference in the magnetic suspension system and maintain a stable suspension gap between the suspension plate and the limit plate and the track.

[0016] Furthermore, a remote communication module is provided in the controller, and the remote communication module maintains communication with the ground control center through a satellite communication link, receives control instructions and uploads operation status data.

[0017] Beneficial effects: Real-time communication and monitoring capabilities help to promptly detect and handle system failures or abnormalities, preventing the situation from escalating or causing more serious problems. At the same time, the ground control center can also remotely diagnose and repair the system through the remote communication module, reducing downtime and losses caused by system failures.

[0018] Furthermore, the tops of the suspension plate and the limiting plate are coated with a radiation protection coating.

[0019] Beneficial effects: Radiation may not only cause failures in electronic components, but may also accelerate their aging process and shorten their service life. By applying radiation protection coatings, the cumulative damage to system components caused by radiation can be reduced, the failure rate can be reduced, and the overall reliability and durability of the system can be improved. This is especially important for space equipment that needs to operate in orbit for a long time.

[0020] Furthermore, the suspension plate and the limit plate are redundantly connected using GH5605 alloy.

[0021] Beneficial effects: GH5605 alloy is a high-performance alloy material with excellent mechanical properties and high-temperature stability. Using this alloy as a connection material can significantly enhance the connection strength between the suspension plate and the limit plate, ensuring a stable connection state even under extreme operating conditions. The redundant connection design means that additional connection points are added to the original connection. This design method improves the redundancy of the connection. Even if a connection point fails or is damaged, other connection points can still remain connected, thereby improving the reliability of the entire connection.

[0022] Furthermore, a plurality of temperature sensors are embedded in the electromagnet and the friction belt, and the temperature sensors are electrically connected to the controller.

[0023] Beneficial effects: The temperature sensor can accurately measure the temperature of the electromagnet and friction belt during operation, ensuring the accuracy and real-time nature of the data. This precise temperature monitoring helps to detect temperature anomalies in a timely manner and prevent equipment damage or performance degradation due to overheating.

[0024] Furthermore, the friction belt is made of carbon fiber composite material.

[0025] Benefits: Carbon fiber composites have an extremely high strength-to-weight ratio, meaning they are very strong but relatively light. This property allows the friction belt to maintain stable performance when subjected to high loads and high-speed friction, while reducing the weight of the entire system. Lightweight design is particularly important for space on-orbit equipment because it can reduce launch costs, improve transportation efficiency, and save energy in long-term operation. Carbon fiber composites have excellent wear resistance and can maintain a low wear rate during long-term, high-frequency friction. This is critical for friction belts because they need to withstand continuous friction to generate electricity or achieve other functions. Friction belts with good wear resistance can extend their service life and reduce the frequency of replacement, thereby reducing maintenance costs and downtime.

[0026] Beneficial effects of the present invention: 1. The controller in the present invention can accurately measure the offset distance between the suspension disk and the limit disk and the track through real-time feedback from the potential sensor and the ultrasonic rangefinder. Combined with the intelligent control algorithm module, the controller can dynamically adjust the current intensity of the electromagnet, thereby accurately controlling the suspension gap and realizing the precise dynamic limit of the space on-track turntable. This design improves the stability and reliability of the system and reduces failures and damage caused by excessive offset.

[0027] 2. The magnetic suspension system of the present invention reduces the direct contact between the suspension plate and the limit plate and the track, thereby reducing wear, which not only prolongs the service life of the equipment, but also improves the operating efficiency and environmental friendliness of the system. Through innovative designs such as energy recycling and intelligent control, it promotes the sustainable development of space technology. It not only improves the operating efficiency and reliability of space equipment, but also reduces the negative impact on the environment, providing strong technical support for future space exploration and utilization.

[0028] 3. The controller in the present invention is the core component of the system, integrating the intelligent control algorithm module and the remote communication module. Through real-time data processing and remote control functions, the system can automatically adapt to different operating environments and conditions, and realize intelligent operation and maintenance. At the same time, the remote communication module also facilitates the ground control center to monitor the system in real time and troubleshoot faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an axonometric diagram of an embodiment of the present invention.

[0030] Figure 2 It is a top cross-sectional view of an embodiment of the present invention.

[0031] Figure 3 4 is a cross-sectional view of a suspension disk according to an embodiment of the present invention.

[0032] Figure 4 It is a cross-sectional view of a limiting plate according to an embodiment of the present invention.

[0033] Figure 5 The figure is a logic flow chart of an embodiment of the present invention.

[0034] The reference numerals include: 1. track; 2. suspension plate; 3. limit plate; 4. electromagnet; 5. battery; 6. controller; 7. potentiometer; 8. radiation protection coating; 9. counterweight; 10. suspension slot; 11. ranging slot; 12. ultrasonic rangefinder; 13. elastic layer; 14. energy recovery device; 15. friction point; 16. friction belt. DETAILED DESCRIPTION

[0035] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Example

[0036] This embodiment is shown in the attached Figure 1-Figure 4As shown: a space on-orbit turntable limiting mechanism, including a track 1, a suspension plate 2 and a limiting plate 3, the limiting plates 3 are welded on both sides of the suspension plate 2, the tops of the suspension plate 2 and the limiting plate 3 are coated with an anti-radiation coating 8, the bottoms of the suspension plate 2 and the limiting plate 3 are both provided with suspension grooves 10, the suspension plate 2 and the limiting plate 3 are slidably matched with the suspension grooves 10, the inner walls of the suspension plate 2 and the limiting plate 3 are embedded with a plurality of counterweights 9 for adjusting the motion posture, the inner walls of the suspension groove 10 at the bottom of the suspension plate 2 and the outer wall of the track 1 are fixedly connected with a plurality of electromagnets 4 for forming magnetic suspension by bolts, the electromagnets 4 are made of nickel-iron alloy, the bottom of the suspension groove 10 is provided with a ranging groove 11, the bottom of the track 1 is fixedly connected with an ultrasonic rangefinder 12 by bolts, and the ultrasonic rangefinder 12 is used to monitor the motion trajectory of the ranging groove 11.

[0037] A plurality of potential sensors 7 are fixedly connected to the inner wall of the suspension groove 10 at the bottom of the limit plate 3 by bolts. A plurality of friction points 15 are integrally formed on the side of the potential sensor 7 close to the track 1. A friction belt 16 for generating electricity by friction with the friction points 15 is integrally formed on the outer wall of the track 1. An energy recovery device 14 is fixedly connected to the bottom of the limit plate 3 by bolts. The energy recovery device 14 is electrically connected to the potential sensor 7. A transformer is provided in the energy recovery device 14. The transformer is used to boost the DC electricity generated by the potential sensor 7 through frictional electricity, and then store it through the battery 5.

[0038] The inner wall of the suspension plate 2 and the limit plate 3 are both fixedly connected with the controller 6 and the battery 5 by bolts, and the potential sensor 7, the energy recovery device 14, the ultrasonic rangefinder 12, the electromagnet 4 and the battery 5 are all electrically connected to the controller 6. The controller 6 is preset with an intelligent control algorithm module, which dynamically adjusts the current of the electromagnet 4 according to the feedback of the potential sensor 7 and the ultrasonic rangefinder 12. The controller 6 is provided with a remote communication module, which communicates with the ground control center through a satellite communication link, receives control instructions and uploads operation status data.

[0039] Specific implementation steps: After the suspension plate 2 and the limit plate 3 are installed on the track 1, initialization settings are first performed, including adjustment of the magnetic field strength of the electromagnet 4, calibration of the ultrasonic rangefinder 12 and sensitivity adjustment of the potentiometer 7.

[0040] The controller 6 receives the initialization command from the ground control center through the remote communication module and confirms that all equipment is in normal state. The controller 6 starts the electromagnet 4 and uses the strong magnetic field generated by the rare earth permanent magnet material to form a stable magnetic suspension force between the suspension slot 10 and the track 1, so that the suspension plate 2 is suspended at a preset height above the track 1. The ultrasonic rangefinder 12 continuously monitors the distance between the suspension plate 2 and the track 1, and feeds the data back to the controller 6 so as to adjust the magnetic field strength of the electromagnet 4 in real time to keep the suspension height stable.

[0041] According to the task requirements, the controller 6 changes the center of gravity distribution of the suspension plate 2 by adjusting the position of the counterweight block 9 on the inner wall of the suspension plate 2 and the limit plate 3, thereby adjusting the motion posture of the suspension plate 2. During the posture adjustment process, the controller 6 will comprehensively consider the suspension stability, motion efficiency and task requirements to ensure the accuracy and safety of the posture adjustment.

[0042] When the suspension plate 2 needs to reach a specific position for limiting, the controller 6 will determine the distance between the suspension plate 2 and the limiting plate 3 and the track 1 and whether there is any deviation during the movement according to the data of the ultrasonic rangefinder 12. When the suspension plate 2 and the limiting plate 3 are offset during the movement, the potential sensor 7 and the friction point 15 at the bottom of the limiting plate 3 contact the friction belt 16 on the track 1 to generate friction electricity. The energy recovery device 14 collects this friction electricity and boosts it through a transformer, directly acting on the corresponding electromagnet 4 to reset the suspension plate 2 and the limiting plate 3 to achieve dynamic limiting, or store it in the battery 5 to achieve energy recovery.

[0043] At the same time, the signal of the potential sensor 7 is also fed back to the controller 6 as a reference for limit control. When the suspension plate 2 reaches the predetermined position, the controller 6 adjusts the electromagnet 4 to achieve precise limit. During the stable operation of the suspension plate 2, the controller 6 continuously monitors the operating status of each device and the motion parameters of the suspension plate 2.

[0044] The remote communication module maintains real-time communication with the ground control center, uploads operating status data and receives control instructions. If an abnormal situation is found or a new control instruction is received, the controller 6 will immediately take corresponding countermeasures or execute new task instructions. When the task is completed, the controller 6 guides the suspension disk 2 to the designated location for recovery or prepares for the next task. During the recovery process, it is also necessary to maintain stable suspension and precise control of the suspension disk 2 to ensure the safety and smoothness of the recovery process. Example

[0045] Basically as attached Figure 3 and Figure 4 As shown: Different from the above-mentioned embodiment, an elastic layer 13 for reducing the wear of the track 1 is bonded to the inner wall of the suspension groove 10 of the suspension plate 2 and the limiting plate 3.

[0046] Specific implementation steps: When the suspension plate 2 and the limit plate 3 are offset during movement, the potential sensor 7 and the friction point 15 at the bottom of the limit plate 3 contact the friction belt 16 on the track 1 to generate friction electricity. At the same time, the elastic layer 13 plays a buffering role during the contact process, reducing the direct wear of the suspension groove 10 on the track 1. Example

[0047] Basically as attached Figure 2As shown: Different from the above embodiment, the suspension plate 2 and the limiting plate 3 are redundantly welded with GH5605 alloy.

[0048] Specific implementation steps: During the movement of the suspension plate 2 and the limit plate 3, the preset welding points and redundant welding points of the GH5605 alloy jointly bear and disperse the stress and torque generated by the posture change, thereby improving the stability and durability of the system. Example

[0049] Basically as attached Figure 3 and Figure 4 As shown: Different from the above embodiment, a plurality of temperature sensors are embedded in the electromagnet 4 and the friction belt 16 , and the temperature sensors are electrically connected to the controller 6 . Specific implementation steps

[0050] During the movement of the suspension plate 2 and the limit plate 3, the controller 6 adjusts the temperature control strategy in real time according to the feedback data of the temperature sensor. If the temperature fluctuates abnormally, the controller 6 will take timely measures to prevent the temperature from being too high or too low and causing damage to the equipment. By monitoring the temperature of the electromagnet 4 and the friction belt 16 in real time, potential overheating or overcooling problems can be discovered and handled in time to prevent equipment damage or safety accidents.

[0051] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A space on-track turntable limiting mechanism, characterized by: The invention comprises a track (1), a suspension plate (2) and a limit plate (3), wherein both sides of the suspension plate (2) are fixedly connected to the limit plate (3), the bottoms of the suspension plate (2) and the limit plate (3) are provided with suspension grooves (10), the suspension plate (2) and the limit plate (3) are slidably matched with the suspension grooves (10), a plurality of electromagnets (4) for forming magnetic suspension are fixedly connected around the inner wall of the suspension groove (10) at the bottom of the suspension plate (2) and the outer wall of the track (1), a distance measuring groove (11) is provided at the bottom of the suspension groove (10), and an ultrasonic distance meter (12) is fixedly connected to the bottom of the track (1), and the ultrasonic distance meter (12) is used to monitor the movement track of the distance measuring groove (11); the suspension groove at the bottom of the limit plate (3) is provided with a plurality of electromagnets (4) for forming magnetic suspension, and the suspension groove (10) is provided with a plurality of electromagnets (4) for forming magnetic suspension. (10) A plurality of potential sensors (7) are fixedly connected around the inner wall, a plurality of friction points (15) are fixedly connected to the side of the potential sensor (7) close to the track (1), a friction belt (16) for generating electricity by friction with the friction points (15) is fixedly connected to the outer wall of the track (1), an energy recovery device (14) is fixedly connected to the bottom of the limit plate (3), the energy recovery device (14) is electrically connected to the potential sensor (7), a controller and a storage battery (5) are fixedly connected to one side of the inner wall of the suspension plate (2) and the limit plate (3), and the potential sensor (7), the energy recovery device (14), the ultrasonic rangefinder (12), the electromagnet (4) and the storage battery (5) are all electrically connected to the controller (6).

2. The space on-orbit turntable limiting mechanism according to claim 1 is characterized in that: A plurality of counterweight blocks (9) for adjusting the movement posture are embedded in the inner walls of the suspension plate (2) and the limiting plate (3).

3. The space on-orbit turntable limiting mechanism according to claim 1 is characterized in that: An elastic layer (13) for reducing wear of the track (1) is fixedly connected to the inner walls of the suspension grooves (10) of the suspension plate (2) and the limiting plate (3).

4. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: The electric energy recovery device (14) is provided with a transformer, which is used to boost the direct current generated by the potential sensor (7) through frictional electricity, and then store it in the storage battery (5).

5. The space on-orbit turntable limiting mechanism according to claim 1 is characterized in that: The electromagnet (4) is made of nickel-iron alloy, and the controller (6) is preset with an intelligent control algorithm module, which dynamically adjusts the current of the electromagnet (4) according to feedback from the potential sensor (7) and the ultrasonic rangefinder (12).

6. The space on-track turntable limiting mechanism according to claim 1 or 5, characterized in that: The controller (6) is provided with a remote communication module, which maintains communication with a ground control center via a satellite communication link, receives control instructions and uploads operating status data.

7. The space on-orbit turntable limiting mechanism according to claim 1, characterized in that: The tops of the suspension plate (2) and the limiting plate (3) are coated with a radiation protection coating (8).

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