Rope-driven space locking and releasing device

Abstract

The invention provides a rope-driven space locking and releasing device, and belongs to the technical field of space gravitational wave detection locking and releasing. The non-firework space locking and separating mechanism which is high in bearing capacity, low in impact, rapid in response and capable of repeatedly conducting ground verification is developed. The device comprises a steel rope, a locking trigger mechanism, a large force cone, a driving end frame, a driven end frame, a first disc spring set and a second disc spring set, the driving end frame is fixedly connected with a load cabin bottom plate, the driven end frame is fixedly connected with a load and located in the driving end frame, and the upper portion of a main pull rod of the locking trigger mechanism sequentially penetrates through the large force cone and the top of the driving end frame. The periphery of the main pull rod penetrating out of the driven end frame is sleeved with a first disc spring set, the periphery of the main pull rod penetrating out of the top of the driving end frame is sleeved with a second disc spring set, and the trigger end of the locking trigger mechanism is connected with a steel rope. According to the locking device, rope driving is combined with a middle conical mechanism to achieve locking, and compared with traditional mechanical locking, the locking device has higher flexibility and controllability.

Description

Technical Field

[0001] The invention belongs to the technical field of locking and releasing for space gravitational wave detection, and in particular relates to a rope-driven space locking and releasing device. Background Art

[0002] Faced with the trend of diversification of space missions, developing a locking and separation mechanism that meets the requirements is an important basis for ensuring the implementation of space gravitational wave detection missions. Space gravitational wave detection uses gravitational wave detection technology similar to that on the ground. The light source emits lasers, which are reflected by the surface of the test mass and received by the receiver. When the gravitational wave passes through the optical path, it will cause changes in the light, and then produce light interference. The change is received by the receiver, and the existence of gravitational waves can be detected based on the changes in the received information. The test mass is the core component of gravitational wave detection. The main function of the locking and separation mechanism is to ensure that the load can be reliably locked during the launch or operation of the equipment to protect it from vibration and impact during the launch process; after entering the orbit, the test mass needs to be released at a very small residual speed and captured by the static electrode plate on the satellite electrode frame and suspended in a predetermined position. This requires the locking and release mechanism to accurately control the release of the test mass to achieve precise positioning and improve the release accuracy.

[0003] The traditional pyrotechnic locking and separation mechanism has the advantages of large load-bearing capacity, reliable separation, large energy reserve, and rapid response, but its disadvantages are very prominent, such as large impact, single triggering, non-repeatable test, serious pollution, and easy to cause harm to other components. Therefore, it has become an urgent task to develop a non-pyrotechnic space locking and separation mechanism with high load-bearing capacity, low impact, rapid response, and repeatable ground verification. 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, the present invention proposes a rope-driven space locking and releasing device, which has the characteristics of large load-bearing capacity, low impact, rapid separation, and repeatable testing, and meets the requirements of space applications.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rope-driven spatial locking and releasing device, comprising a steel rope, a locking trigger mechanism, a large force cone, an active end frame, a passive end frame, a disc spring group one and a disc spring group two, the active end frame is fixedly connected to the bottom plate of the load cabin, the passive end frame is fixedly connected to the load, the passive end frame is located in the active end frame, the bottom of the passive end frame is located at the outer periphery of the top of the cone of the large force cone, the bottom of the active end frame is located at the outer periphery of the lower part of the cone of the large force cone, the upper part of the main pull rod of the locking trigger mechanism passes through the large force cone and the top of the active end frame in sequence, and the outer periphery of the main pull rod passing through the passive end frame is covered with a disc spring group one, and the outer periphery of the main pull rod passing through the top of the active end frame is covered with a disc spring group two, and the trigger end of the locking trigger mechanism is connected to the steel rope.

[0006] Furthermore, the locking trigger mechanism includes disc spring component 1, disc spring component 2, disc spring, pull rod, connecting rod 1, connecting rod 2, main pull rod and tension spring, wherein connecting rod 1 is fixed to the lower end of the main pull rod, and connecting rod 2 is fixed to the high-power cone; one end of the pull rod is connected to disc spring component 1, the disc spring is fixed by disc spring component 1 and disc spring component 2, and the other end is connected to the tension spring, and the tension spring is connected to the active end frame.

[0007] Furthermore, one end of the steel rope is fixed to the disc spring member 2, and the other end is fixed to the driving mechanism.

[0008] Furthermore, a limiting groove is provided at the bottom of the main pull rod, and protrusions are provided on the connecting rod 1 and the connecting rod 2 so as to be able to slide in the limiting groove.

[0009] A working method of a rope-driven space locking and releasing device specifically comprises the following steps:

[0010] The locking release device is manually locked on the ground. In the locked state, the steel rope applies tension to the pull rod, pushing the main pull rod, pushing the large cone upward, so that the active end frame and the passive end frame are locked together through the large cone. When the locking limit position is reached, the convex points on the connecting rod 1 and the connecting rod 2 are stuck in the limit groove on the main pull rod to limit the axial movement of the main pull rod. At this time, the tension spring is in a stretched state;

[0011] When releasing, the driving mechanism releases one end of the steel rope to unload the steel rope, the tension spring pulls the pull rod, and the pull rod pulls the connecting rod one and the connecting rod two, so that the high-power cone moves downward, thereby separating the fixed end frame and the passive end frame, realizing the release of the locking release device and the separation of the load.

[0012] Compared with the prior art, the rope-driven space locking and releasing device of the present invention has the following beneficial effects:

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

[0014] 2. The locking and releasing mechanisms described in the present invention can be arranged in multiples at the same time to enhance the locking effect.

[0015] 3. The present invention utilizes the characteristics that when the connecting rod is close to the dead point, the locking force is large but the required driving force is small, thereby reducing the driving force required for loading during locking, reducing energy consumption, and making the locking mechanism lighter.

[0016] 4. After the separation is achieved in the present invention, the triggering and actuating elements such as the steel rope, tension spring, and conical mechanism that have completed their functions are all retained on the bottom plate of the load compartment, which will not generate waste and will not affect subsequent work.

[0017] 5. The non-pyrotechnic point-type connection and separation device of the present invention can avoid the impact generated when pyrotechnic products are working, and at the same time has the characteristics of being detectable and capable of repeated ground tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

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

[0020] Figure 2 A schematic diagram of a released state of a rope-driven space 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 It is a partial schematic diagram of a rope-driven space locking and releasing device according to an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of a high-power cone in a rope-driven space locking and releasing device according to an embodiment of the present invention;

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

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

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

[0028] Description of reference numerals:

[0029] 1-steel rope; 2-locking trigger mechanism; 3-power cone; 4-active end frame; 5-passive end frame; 6-disc spring group one; 7-disc spring group 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 DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0031] See also Figure 1-9 The present embodiment is described as a rope-driven space locking and releasing device, which is mainly used to ensure the stability of the load during the launching process. The locking force is relatively large and is a one-time locking. The locking force is applied manually on the ground and cannot be locked again after being unlocked. The rope-driven spatial locking and releasing 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 disc spring group 1 6 and a disc spring group 2 7. The active end frame 4 is fixedly connected to the bottom plate of the load compartment, the passive end frame 5 is fixedly connected to the load, the passive end frame 5 is located in the active end frame 4, the bottom of the passive end frame 5 is located at the outer periphery of the top of the cone of the high-power cone 3, the bottom of the active end frame 4 is located at 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 high-power cone 3 and the top of the active end frame 4 in sequence, and the outer periphery of the main pull rod 207 passing through the passive end frame 5 is sleeved with a disc spring group 1 6, and the outer periphery of the main pull rod 207 passing through the top of the active end frame 4 is sleeved with a disc spring group 2 7, and 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 component 201, a disc spring component 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-power cone 3; one end of the pull rod 204 is connected to the disc spring component 201, and the disc spring 203 is fixed by the disc spring component 201 and the disc spring component 202, and the other end is connected to the tension spring 208, and the tension spring 208 is connected to the active end frame 4.

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

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

[0035] A limit groove is provided on the main pull rod 207, and the limit groove is located at the bottom of the main pull rod 207. There are protrusions on the connecting rod 1 205 and the connecting rod 206, which can slide in the limit groove. The characteristics of the connecting rod 1 205 and the connecting rod 206 when they are close to the dead point position, the locking force is large and the required driving force is small, and the required driving force for loading during locking can be reduced.

[0036] When releasing, the driving mechanism releases one end of the steel rope 1 to unload the steel rope 1, and the tension spring 208 pulls the pull rod 204, and the pull rod 204 pulls the connecting rod 1 205 and the connecting rod 206, and then pulls the main pull rod 207, so that the high-power cone 3 moves downward, thereby separating the active end frame 4 and the passive end frame 5 to achieve load separation.

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

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

[0039] When releasing, the driving mechanism releases one end of the steel rope 1 to unload the steel rope 1, and the tension spring 208 pulls the pull rod 204, and the pull rod 204 pulls the connecting rod 1 205 and the connecting rod 206 to move the high-power cone 3 downward, thereby separating the fixed end frame 4 and the passive end frame 5, thereby releasing the locking release device and separating the load.

[0040] After separation is achieved, the triggering and actuating elements such as the unlocking steel rope 1, the high-power cone 3 and the tension spring 208 that have completed their functions are all retained on the bottom plate of the load compartment, and no waste is generated and the overall motion state is not disturbed.

[0041] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A rope-driven space locking and releasing device, characterized in that: The invention comprises 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 disc spring group 1 (6) and a disc spring group 2 (7), wherein the active end frame (4) is fixedly connected to the bottom plate of the load compartment, the passive end frame (5) is fixedly connected to the load, the passive end frame (5) is located in the active end frame (4), the bottom of the passive end frame (5) is located at the outer periphery of the top of the cone of the high-power cone (3), the bottom of the active end frame (4) is located at 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, and the outer periphery of the main pull rod (207) passing through the passive end frame (5) is covered with a disc spring group 1 (6), and the outer periphery of the main pull rod (207) passing through the top of the active end frame (4) is covered with a disc spring group 2 (7), and the trigger end of the locking trigger mechanism (2) is connected to the steel rope (1).

2. The rope-driven space locking and releasing device according to claim 1, characterized in that: The locking trigger mechanism (2) comprises a disc spring component 1 (201), a disc spring component 2 (202), a disc spring (203), a pull rod (204), a connecting rod 1 (205), a connecting rod 2 (206), a main pull rod (207) and a tension spring (208), wherein the connecting rod 1 (205) is fixed to the lower end of the main pull rod (207), and the connecting rod 2 (206) is fixed to the force cone (3); one end of the pull rod (204) is connected to the disc spring component 1 (201), the disc spring (203) is fixed by the disc spring component 1 (201) and the disc spring component 2 (202), and 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 space locking and releasing device according to claim 1, characterized in that: One end of the steel rope (1) is fixed to disc spring component 2 (202), and the other end is fixed to the driving mechanism.

4. The rope-driven space locking and releasing device according to claim 1, characterized in that: A limiting groove is provided at the bottom of the main pull rod (207), and protrusions are provided on the connecting rod 1 (205) and the connecting rod 2 (206) so as to be able to slide in the limiting groove.

5. A working method of the rope-driven space locking and releasing device according to claim 4, characterized in that: The locking release device is manually locked on the ground. In the locked state, the steel rope (1) applies a pulling force to the pull rod (204), pushing the main pull rod (207), pushing the large force cone (3) to move upward, so that the active end frame (4) and the passive end frame (5) are locked together through the large force cone (3). When the locking limit position is reached, the protrusions on the connecting rod 1 (205) and the connecting rod 2 (206) are stuck in the limit groove on the main pull rod (207) to limit the axial movement of the main pull rod (207). At this time, the tension spring (208) is in a stretched state; When releasing, the driving mechanism releases one end of the steel rope (1), so that the steel rope (1) is unloaded, and the tension spring (208) pulls the pull rod (204), and the pull rod (204) pulls the connecting rod 1 (205) and the connecting rod 2 (206), so that the high-power cone (3) moves 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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