A rope-driven space locking and releasing device

Abstract

This invention proposes a rope-driven space locking and release device, belonging to the field of space gravitational wave detection locking and release technology. It solves the problem of developing a non-pyrotechnic space locking and separation mechanism with high load-bearing capacity, low impact, rapid response, and repeatable ground verification. It includes a steel rope, a locking trigger mechanism, a high-force cone, an active end frame, a passive end frame, a first disc spring assembly, and a second disc spring assembly. The active end frame is fixedly connected to the payload compartment floor plate, and the passive end frame is fixedly connected to the payload, located inside the active end frame. The upper part of the main pull rod of the locking trigger mechanism passes through the high-force cone and the top of the active end frame sequentially. A first disc spring assembly is sleeved on the outer periphery of the main pull rod where it exits the passive end frame, and a second disc spring assembly is sleeved on the outer periphery of the main pull rod where it exits the top of the active end frame. The trigger end of the locking trigger mechanism is connected to the steel rope. This invention uses a rope-driven mechanism combined with an intermediate conical mechanism to achieve locking, which has higher flexibility and controllability compared to traditional mechanical locking.

Description

Technical Field

[0001] This invention belongs to the field of space gravitational wave detection locking and release technology, and in particular relates to a rope-driven space locking and release device. Background Technology

[0002] Given the increasing diversification of space missions, developing a locking and separation mechanism that meets the requirements is crucial for ensuring the successful implementation of space gravitational wave detection missions. Space gravitational wave detection employs technology similar to that used on Earth. A laser light source emits light, which is reflected by a test mass surface and received by a receiver. When a gravitational wave passes through the optical path, it causes changes in the light, resulting in interference. This change is received by the receiver, allowing the detection of the gravitational wave. The test mass is the core component of gravitational wave detection. The main function of the locking and separation mechanism is to ensure reliable locking of the payload during launch or operation, protecting it from vibrations and impacts. After entering orbit, the test mass needs to be released with a very low residual velocity and captured by a static electrode plate on the satellite's electrode frame, suspending it in a predetermined position. This requires the locking and release mechanism to precisely control the release of the test mass to achieve accurate positioning and improve release precision.

[0003] Traditional pyrotechnic locking and separation mechanisms have advantages such as high load-bearing capacity, reliable separation, large energy reserves, and rapid response. However, their disadvantages are also very prominent, such as high impact, single-trigger operation, inability to repeat the test, and serious pollution that can easily damage other components. Therefore, developing a non-pyrotechnic space locking and separation mechanism with high load-bearing capacity, low impact, rapid response, and repeatable ground verification has become an urgent task. Summary of the Invention

[0004] In view of this, in order to solve the problem of how to develop a non-pyrotechnic space locking and separation mechanism with high load-bearing capacity, low impact, rapid response, and repeatable ground verification, this invention proposes a rope-driven space locking and release device, which has the characteristics of high load-bearing capacity, low impact, rapid separation, and repeatable testing, and meets the requirements of space applications.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rope-driven spatial locking and releasing device, comprising a steel rope, a locking triggering mechanism, a high-power cone, an active end frame, a passive end frame, a first disc spring assembly, and a second disc spring assembly. The active end frame is fixedly connected to the bottom plate of the load chamber, and the passive end frame is fixedly connected to the load. The passive end frame is located inside the active end frame. The bottom of the passive end frame is located on the outer periphery of the top of the high-power cone, and the bottom of the active end frame is located on the outer periphery of the lower part of the high-power cone. The upper part of the main pull rod of the locking triggering mechanism passes through the top of the high-power cone and the active end frame in sequence. The outer periphery of the main pull rod extending out of the passive end frame is fitted with the first disc spring assembly, and the outer periphery of the main pull rod extending out of the top of the active end frame is fitted with the second disc spring assembly. The triggering end of the locking triggering mechanism is connected to the steel rope.

[0006] Furthermore, the locking triggering mechanism includes a disc spring, a disc spring, a disc spring, a pull rod, a connecting rod, a connecting rod, a main pull rod, and a tension spring. The connecting rod is fixed to the lower end of the main pull rod, and the connecting rod is fixed to the large cone. One end of the pull rod is connected to the disc spring, and the disc spring is fixed by the disc spring and the disc spring. The other end is connected to the tension spring, which is connected to the active end frame.

[0007] Furthermore, one end of the steel rope is fixed to the disc spring, and the other end is fixed to the drive mechanism.

[0008] Furthermore, the bottom of the main tie rod is provided with a limiting groove, and the connecting rod one and connecting rod two are provided with protrusions, which can slide within the limiting groove.

[0009] A method for operating a rope-driven spatial locking and releasing device specifically includes the following steps:

[0010] The locking and releasing device is manually locked on the ground. In the locked state, the steel rope applies tension to the tie rod, pushes the main tie rod, and pushes the powerful cone to move upward, so that the active end frame and the passive end frame are locked together by the powerful cone. When the locking limit position is reached, the protrusions on the first and second connecting rods are locked in the limiting groove on the main tie rod to restrict the axial movement of the main tie rod. At this time, the tension spring is in a stretched state.

[0011] During release, the drive mechanism releases one end of the steel rope, unloading the steel rope. The tension spring pulls the pull rod, which in turn pulls connecting rod one and connecting rod two, causing the powerful cone to move downwards. This separates the fixed end frame and the passive end frame, releasing the locking release device and separating the load.

[0012] Compared with the prior art, the advantages of the rope-driven spatial locking and releasing device of the present invention are:

[0013] 1. Regarding the locking method, the present invention adopts a rope drive combined with an intermediate conical mechanism to achieve locking. This method provides a new locking mechanism, which has higher flexibility and controllability compared with traditional mechanical locking.

[0014] 2. Multiple locking and releasing mechanisms described in this invention can be arranged simultaneously to enhance the locking effect.

[0015] 3. This invention utilizes the characteristic that the locking force is large and the required driving force is small when the connecting rod is near the dead point position, thereby reducing the driving force required for loading during locking, reducing energy consumption, and making the locking mechanism lighter.

[0016] 4. After separation, the completed triggering and actuating elements such as steel ropes, tension springs, and conical mechanisms are all retained on the bottom plate of the load compartment, which will not generate waste or affect subsequent work.

[0017] 5. The non-pyrotechnic connection and separation device of the present invention can avoid the impact generated when pyrotechnics are working, and at the same time has the characteristics of being detectable and capable of being repeatedly tested on the ground. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the locked state of a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the release state of a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0021] Figure 3 for Figure 1 AA section view;

[0022] Figure 4 for Figure 2 AA section view;

[0023] Figure 5 This is a partial schematic diagram of a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of a high-force cone in a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the pull rod in a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the connecting rod in a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0027] Figure 9This is a schematic diagram of the main pull rod in a rope-driven spatial locking and releasing device according to an embodiment of the present invention;

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Steel rope; 2-Locking trigger mechanism; 3-High-strength cone; 4-Active end frame; 5-Passive end frame; 6-Disc spring assembly one; 7-Disc spring assembly two; 201-Disc spring component one; 202-Disc spring component two; 203-Disc spring; 204-Pull rod; 205-Connecting rod one; 206-Connecting rod two; 207-Main pull rod; 208-Tension spring; 601-Pressure plate one; 602-Disc spring one; 603-Pressure plate two; 604-Nut one; 701-Disc spring two; 702-Pressure plate three; 703-Nut two. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0031] See Figure 1-9 This embodiment describes a rope-driven space locking and releasing device, which is mainly used to ensure the stability of the load during launch. It has a large locking force and is a one-time locking device. The locking force is applied manually on the ground, and it cannot be locked again after unlocking. The rope-driven spatial locking and releasing device includes a steel rope 1, a locking trigger mechanism 2, a high-pressure cone 3, an active end frame 4, a passive end frame 5, a first disc spring assembly 6, and a second disc spring assembly 7. The active end frame 4 is fixedly connected to the bottom plate of the load chamber, and the passive end frame 5 is fixedly connected to the load. The passive end frame 5 is located inside the active end frame 4. The bottom of the passive end frame 5 is located on the outer periphery of the top of the cone of the high-pressure cone 3, and the bottom of the active end frame 4 is located on the outer periphery of the lower part of the cone of the high-pressure cone 3. The upper part of the main pull rod 207 of the locking trigger mechanism 2 passes through the top of the high-pressure cone 3 and the active end frame 4 in sequence. The outer periphery of the main pull rod 207 that extends out of the passive end frame 5 is fitted with the first disc spring assembly 6, and the outer periphery of the main pull rod 207 that extends out of the top of the active end frame 4 is fitted with the second disc spring assembly 7. The trigger end of the locking trigger mechanism 2 is connected to the steel rope 1.

[0032] The locking trigger mechanism 2 includes a disc spring 201, a disc spring 202, a disc spring 203, a pull rod 204, a connecting rod 205, a connecting rod 206, a main pull rod 207, and a tension spring 208. The connecting rod 205 is fixed to the lower end of the main pull rod 207, and the connecting rod 206 is fixed to the high-pressure cone 3. One end of the pull rod 204 is connected to the disc spring 201, and the disc spring 203 is fixed through the disc spring 201 and the disc spring 202. The other end is connected to the tension spring 208, which is connected to the active end frame 4.

[0033] One end of the steel rope 1 is fixed to the disc spring 202, and the other end is fixed to the drive mechanism.

[0034] The upper end of the main pull rod 207 extends into the active end frame 4 and is pre-tightened by loading nut 2 703, pressure plate 3 702, and disc spring 2 701 at the upper part of the main pull rod 207. The lower end of the main pull rod 207 extends into the lower high-pressure cone 3 through the passive end frame 5 and is pre-tightened by loading nut 1 604, pressure plate 2 603, disc spring 1 602, and pressure plate 1 601 at the middle part of the main pull rod 207 above the passive end frame 5. Disc spring group 1 6 and disc spring group 2 7 are used to adjust the magnitude of the locking force.

[0035] A limiting groove is provided on the main tie rod 207, located at the bottom of the main tie rod 207. Connecting rod 1 205 and connecting rod 2 206 have protrusions that can slide within the limiting groove. The characteristic that connecting rod 1 205 and connecting rod 2 206 have a large locking force and a small required driving force when near the dead position can be utilized to reduce the driving force required for loading during locking.

[0036] During release, the drive mechanism releases one end of the steel rope 1, causing the steel rope 1 to be unloaded. The tension spring 208 pulls the pull rod 204, which in turn pulls the connecting rod 205 and the connecting rod 206, thereby pulling the main pull rod 207, causing the powerful cone 3 to move downward, thus separating the active end frame 4 and the passive end frame 5, achieving load separation.

[0037] The working method of the rope-driven spatial locking and releasing device of the present invention specifically includes the following steps:

[0038] The locking and releasing device is manually locked on the ground. In the locked state, the steel rope 1 applies tension to the pull rod 204, pushes the main pull rod 207, and pushes the powerful cone 3 to move upward, so that the active end frame 4 and the passive end frame 5 are locked together by the powerful cone 3. When the locking limit position is reached, the protrusions on the pull rods 205 and 206 are stuck in the limiting groove on the main pull rod 207 to restrict the axial movement of the main pull rod 207. At this time, the tension spring 208 is in a stretched state.

[0039] During release, the drive mechanism releases one end of the steel rope 1, causing the steel rope 1 to be unloaded. The tension spring 208 pulls the pull rod 204, which in turn pulls the connecting rod 205 and the connecting rod 206, causing the high-pressure cone 3 to move downward. This separates the fixed end frame 4 and the passive end frame 5, thus releasing the locking release device and separating the load.

[0040] After separation, the unlocking steel rope 1, the powerful cone 3, and the tension spring 208, which have completed their functions, are all retained on the bottom plate of the load compartment. This will not generate waste or interfere with the overall motion state.

[0041] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A rope-driven spatial locking and releasing device, characterized in that: The device includes a steel rope (1), a locking trigger mechanism (2), a high-power cone (3), an active end frame (4), a passive end frame (5), a first disc spring assembly (6), and a second disc spring assembly (7). The active end frame (4) is fixedly connected to the bottom plate of the load compartment, and the passive end frame (5) is fixedly connected to the load. The passive end frame (5) is located inside the active end frame (4). The bottom of the passive end frame (5) is located on the outer periphery of the top of the cone of the high-power cone (3), and the bottom of the active end frame (4) is located on the outer periphery of the lower part of the cone of the high-power cone (3). The upper part of the main pull rod (207) of the locking trigger mechanism (2) passes through the top of the high-power cone (3) and the active end frame (4) in sequence. The outer periphery of the main pull rod (207) that passes through the passive end frame (5) is fitted with the first disc spring assembly (6), and the outer periphery of the main pull rod (207) that passes through the top of the active end frame (4) is fitted with the second disc spring assembly (7). The trigger end of the locking trigger mechanism (2) is connected to the steel rope (1).

2. The rope-driven spatial locking and releasing device according to claim 1, characterized in that: The locking triggering mechanism (2) includes a disc spring (201), a disc spring (202), a disc spring (203), a pull rod (204), a connecting rod (205), a connecting rod (206), a main pull rod (207), and a tension spring (208). The connecting rod (205) is fixed to the lower end of the main pull rod (207), and the connecting rod (206) is fixed to the force cone (3). One end of the pull rod (204) is connected to the disc spring (201), and the disc spring (203) is fixed by the disc spring (201) and the disc spring (202). The other end is connected to the tension spring (208), and the tension spring (208) is connected to the active end frame (4).

3. The rope-driven spatial locking and releasing device according to claim 1, characterized in that: One end of the steel rope (1) is fixed to the disc spring (202), and the other end is fixed to the drive mechanism.

4. The rope-driven spatial locking and releasing device according to claim 1, characterized in that: The bottom of the main tie rod (207) is provided with a limiting groove, and the connecting rod one (205) and connecting rod two (206) are provided with protrusions, which can slide in the limiting groove.

5. A method of operating the rope-driven spatial locking and releasing device according to claim 4, characterized in that: The locking and releasing device is manually locked on the ground. In the locked state, the steel rope (1) applies tension to the pull rod (204), pushes the main pull rod (207), and pushes the powerful cone (3) to move upward, so that the active end frame (4) and the passive end frame (5) are locked together by the powerful cone (3). When the locking limit position is reached, the protrusions on the connecting rod one (205) and connecting rod two (206) are stuck in the limiting groove on the main pull rod (207) to restrict the axial movement of the main pull rod (207). At this time, the tension spring (208) is in the tension state. When released, the drive mechanism releases one end of the steel rope (1), causing the steel rope (1) to be unloaded. The tension spring (208) pulls the pull rod (204), and the pull rod (204) pulls the connecting rod one (205) and the connecting rod two (206), causing the powerful cone (3) to move downward, thereby separating the active end frame (4) and the passive end frame (5), realizing the release of the locking release device and the separation of the load.

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