CN112744369B - A stable suspension and separation mechanism of a pod rod for spacecraft - Google Patents

Abstract

The invention discloses a stable suspension and separation mechanism of a pod rod for a spacecraft, which comprises an upper fixing ring, a lower fixing ring, an upper ring and lower ring connecting device, a sliding pin locking device, an action sensing device, a pin detacher and a popup separator. The invention can realize the stable suspension of the film structure on the pod rod by combining two technical means of using a sliding pin locking device and a movable upper fixing ring structure, and meanwhile, the invention also has the characteristics of simplicity, effectiveness, sensitivity and reliability.

Description

A stable suspension and separation mechanism of pod rod for spacecraft

technical field

The invention relates to the technical field of aerospace structure and mechanism design, in particular to a stable suspension and separation mechanism of a pod rod for an aerospace vehicle.

Background technique

A solar sail spacecraft is a spacecraft that uses the reflected light pressure of sunlight on a thin film sail surface to provide flight power. The structure of the thin film sail surface is usually realized by forming a square or hexagonal structure by supporting rods and films. . Because the pod rod has the advantages of light weight, high stiffness, high storage efficiency, reliable deployment process, and small thermal expansion coefficient, it is a good structural form that can be used as a support rod for solar sail spacecraft. In order to further reduce the structural mass of the solar sail spacecraft so that it can obtain greater acceleration, after the solar sail spacecraft is fully deployed, it is a better solution to discard the retractable mechanism used for the storage and deployment of the pod rod. .

However, in the design of the throwable solar sail spacecraft, the following technical difficulties are faced: on the one hand, when the pod rod is fully deployed in place, the membrane structure should be stably suspended on the end of the pod rod, so that the connection point of the membrane structure It is firmly connected to the pod rod; on the other hand, while achieving stable suspension, the stable suspension mechanism must also be reliably separated from the retracting mechanism, which is beneficial to realize the throwing of the retracting mechanism. Therefore, it is necessary to design a stable suspension. with separate bodies. So far there is no literature report on this type of stable suspension and separation mechanism.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a stable suspension and separation mechanism of the pod rod for spacecraft, which aims to solve the problem of the stable suspension of the film on the pod rod when it is unfolded in place, and to realize the expansion and contraction of the pod rod while being stably suspended. The technical problem of reliable separation of the mechanism occurs.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A stable suspension and separation mechanism for a pod rod for spacecraft, comprising an upper fixing ring, a lower fixing ring, an upper and lower ring connecting device, a sliding pin locking device, a motion sensing device, a pin dismantling device and a pop-up separator;

The lower fixing ring is arranged below the upper fixing ring, and is provided with a locking hole and an installation hole, and the lower fixing ring is fixedly installed on the ejection separator through the installation hole;

The upper and lower ring connection device includes a lateral support and a compression spring, which is used to realize the connection between the upper fixing ring and the lower fixing ring;

The sliding pin locking device includes a locking pin, a pre-embedded spring and a casing, which are arranged on the upper fixing ring; when the pod rod is fully deployed in place, the locking pin passes through the pod rod under the action of the pre-embedded spring The through hole opened on the upper part is slid into the locking hole of the lower fixing ring;

The motion sensing device is arranged above the sliding pin locking device and is in contact with the top holding surface of the locking pin; when the locking pin of the sliding pin locking device locks, the motion sensing device can sense to the action of the locking pin and generate a triggering electrical signal in real time;

The pin remover includes a pin remover body and a retractable pin, the retractable pin is provided between the upper fixing ring and the lower fixing ring; the retractable pin of the pin remover is located at the The retraction action occurs under the action of the triggering electrical signal generated by the motion sensing device, and the restriction of the downward movement of the upper fixing ring is released;

When the retractable pin retracts, the upper fixing ring moves downward under the action of the compression spring of the upper and lower ring connecting device, so as to realize the tightening of the pod rod;

The ejection separator includes an ejection separator body and an ejection separation head, and is fixedly installed on the pod rod extension mechanism; the ejection separation head of the ejection separator is under the action of the triggering electrical signal generated by the motion sensing device, and The ejection separator bodies are separated, so as to realize the separation of the lower fixing ring and the pod rod extension mechanism.

Further, the upper fixing ring includes an arc-shaped part, a straight part and a connecting part, the arc-shaped part is located in the center of the upper fixing ring, and its shape is the same as the cross-sectional shape of the upper surface of the pod rod, which is in the shape of an omega. ; There are two connection parts in total, which are located on the leftmost and rightmost sides of the upper fixing ring, respectively, for connecting the film structure; the straight part is also two sections, respectively located in the arc part and between the two connecting parts;

The lower fixing ring also includes an arc-shaped part in the center, a connecting part located on two outer sides, and a straight part between the arc-shaped part and the connecting part.

Further, the upper and lower ring connecting devices are provided with two and are respectively arranged on the left and right sides of the arc portion of the upper fixing ring.

Further, there are two sliding pin locking devices in total, namely a first sliding pin locking device and a second sliding pin locking device, and the first sliding pin locking device is arranged on the arc portion of the upper fixing ring. On the straight section on the right side, and the second sliding pin locking device is arranged on the straight section on the left side of the arc portion of the upper fixing ring.

Optionally, the motion sensing device adopts a micro switch, and the position is set above the first sliding pin locking device; the micro switch includes a switch body, an operation button and an elastic arm, and the elastic arm is connected with the elastic arm. The top of the locking pin is kept in surface contact; when the locking pin of the sliding pin locking device is locked, the operating button becomes a pop-up state, the microswitch becomes a closed state and a triggering electrical signal is generated.

Optionally, the locking pin includes an upper end of the pin and a lower end of the pin, and the upper end of the pin and the lower end of the pin are connected as a whole by means of threads; the upper end of the pin is provided with a cylindrical protrusion, and the bottom of the lower end of the pin is Has a small rotatable pulley.

Further, there are two pin removers in total, the vertical positions are respectively set between the upper fixing ring and the lower fixing ring, and the horizontal positions are respectively set between the two sliding pins. between the locking device and the connecting portion of the upper fixing ring.

Further, after the ejection separator performs a separation action, the ejection separation head remains on the unfolded pod rod, and the ejection separator body remains on the pod rod extension mechanism.

Optionally, the upper fixing ring is provided with an arc-shaped notch, and the retractable pin of the pin remover is in contact with the arc-shaped notch.

Optionally, the housing of the sliding pin locking device and the upper fixing ring are designed in an integrated manner, and the two form an integral structure.

Compared with the existing conventional technology, the beneficial technical effect obtained by the technical solution proposed by the present invention is mainly reflected in the following three aspects:

First, the present invention realizes the stable suspension of the film structure on the pod rod through the combined use of two technical approaches: the first approach is to use two sliding pin locking devices, by passing the lower end of the locking pin through the pod rod. The through hole opened on the upper part slides into the locking hole of the lower fixing ring, and the locking of the left and right sides of the pod rod by the mechanism of the present invention is realized; There are two upper and lower ring connecting devices and two dismantling devices. When the pin dismantling device removes the restraint, the upper fixing ring can move downward to a certain degree under the action of the compression spring in the upper and lower ring connecting devices, thereby reducing the size of the upper fixing ring. The double Ω-shaped cavity formed between the lower fixing ring and the lower fixing ring, thereby realizing the tightening of the cross section of the pod rod.

Second, the present invention adopts a pop-up separator to realize the separation between the mechanism and the pod rod retracting mechanism, which has the advantages of simplicity and effectiveness.

Thirdly, the present invention adopts an action sensing device (micro switch) arranged above the sliding pin locking device to capture the signal that triggers the tightening of the upper fixed ring and the separation of the mechanism, which is sensitive and reliable.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

Figure 1 is a schematic structural diagram of a throwaway solar sail spacecraft at the moment of separation;

2 is a schematic structural diagram of the stable suspension and separation mechanism according to the present invention;

Fig. 3 is the three views of Fig. 1, wherein Fig. 3 (a) is a front view, Fig. 3 (b) is a right side view, Fig. 3 (c) is a top view;

4 is a schematic structural diagram of an upper fixing ring and a sliding pin locking device;

Figure 5 is two views of the upper fixing ring, wherein Figure 5 (a) is a front view, Figure 5 (b) is a right view;

Fig. 6 is the structural representation of lower fixing ring;

Fig. 7 is two views of the lower fixing ring, wherein Fig. 7(a) is a right side view, and Fig. 7(b) is a front view;

FIG. 8 is a schematic structural diagram of an assembly composed of a locking pin and a pre-embedded spring;

9 is a schematic diagram of the structure of the locking pin;

Fig. 10 is a schematic diagram before and after the locking pin acts, wherein Fig. 10(a) shows the situation when the locking pin does not act, and Fig. 10(b) shows the situation after the locking pin acts;

Fig. 11 is the structural representation of the upper and lower ring connecting device;

12 is a schematic diagram of an assembly composed of an upper fixing ring, a lower fixing ring, an upper and lower ring connecting device and a pin remover;

13 is a schematic diagram of the stable suspension and separation mechanism according to the present invention when both the sliding pin locking device and the pin remover have acted;

Figure 14 is two views of Figure 13, wherein Figure 14 (a) is a front view, Figure 14 (b) is a rear view;

Figure 15 is a schematic diagram before and after the action of the micro switch, wherein Figure 15 (a) shows the situation when the micro switch does not operate, and Figure 15 (b) shows the situation after the micro switch operates;

Fig. 16 is a schematic view before and after the action of the pin remover, wherein Fig. 16(a) shows the situation when the retractable pin is not retracted, and Fig. 16(b) shows the situation where the retractable pin has been retracted;

Figure 17 is a schematic diagram of an assembly composed of a lower fixing ring and a pop-up separator;

Figure 18 is a view of Figure 17 at another angle;

19 is a schematic diagram of the installation of the stable suspension and separation mechanism on the front panel of the retractable mechanism according to the embodiment of the present invention;

20 is a schematic diagram of the stable suspension and separation mechanism on the pod rod according to the embodiment of the present invention completing the stable suspension;

Figure 21 is a view of Figure 20 at another angle.

Description of the reference numerals of the present invention:

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to the schematic diagram of the structure of the throwable solar sail spacecraft at the time of separation shown in Figure 1 (for simplicity, only one-sixth of the thin-film sail structure is shown in the figure). In order to further reduce the structural quality of the spacecraft, The pod rod extension mechanism 18 needs to be thrown away after completing the deployment task, and only the pod rod 8 is kept on the solar sail spacecraft body 17 . At the moment when the pod shaft extension mechanism 18 is about to be separated from the pod shaft 8, in order to form a plane structure that can obtain solar light pressure, the disposable solar sail spacecraft must separate the two end points A and B of the triangular membrane structure 16, respectively. It is stably suspended to the end of its adjacent pod rod. Therefore, it is necessary to design a stable suspension and separation mechanism of the pod rod. On the one hand, the connection point of the membrane structure 16 is stably suspended on the end of the pod rod On the one hand, it also needs to be separated from the pod rod extension mechanism 18 reliably, so as to realize the throwing of the pod rod extension mechanism 18 .

In order to solve the above problems, the present invention proposes a stable suspension and separation mechanism of a pod rod for a spacecraft, as shown in FIG. 2 and FIG. 3 . The stable suspension and separation mechanism of the pod rod for the spacecraft includes an upper fixing ring 1, a lower fixing ring 2, an upper and lower ring connecting device (including a first upper and lower ring connecting device 3a and a second upper and lower ring connecting device 3b), a sliding pin locking device (including the first sliding pin locking device 4a and the second sliding pin locking device 4b), the motion sensing device 6, the pin remover (including the first pin remover 7a and the second pin remover 7b) and the ejection separator 5, etc. component composition. The main idea of the present invention is as follows: when the pod rod is fully deployed in place, the lower end of the locking pin of the sliding pin locking device slides into the locking hole of the lower fixing ring through the through hole opened on the pod rod, so as to realize the locking of the mechanism to the pod rod. At the same time, the motion sensing device generates a triggering electrical signal. On the one hand, the retractable pin of the trigger pin remover is withdrawn to realize the downward movement of the upper fixing ring, thereby realizing the tightening of the pod rod, and on the other hand, it triggers the ejection of the separator. Start, achieve the separation of the structure.

The structural composition of the present invention will be described in detail below.

1) Upper fixing ring

Please refer to FIG. 4 and FIG. 5 , the upper fixing ring 1 is symmetrical with respect to the vertical central axis, and includes three parts: an arc-shaped part 11 , a straight part 12 and a connecting part 13 , wherein the arc-shaped part 11 is located on the upper fixing ring 1 . The center of the pod has the same shape as the cross-sectional shape of the upper surface of the pod rod; there are two connecting parts 13, which are located on the leftmost and rightmost sides of the upper fixing ring 1, respectively, for connecting the membrane structure 16; the straight part 12 is also two sections, located between the arc part 11 and the two connecting parts 13 respectively.

On the two straight sections 12 , a sliding pin locking device is respectively provided, which are a first sliding pin locking device 4a and a second sliding pin locking device 4b. Please refer to FIG. 4 for the specific positions.

A connecting hole 14 is also provided on each of the two straight sections 12 for installing the upper and lower ring connecting devices.

In addition, an arc-shaped notch 15 is also provided under the two straight sections 12 for determining the installation position of the retractable pin in the pin remover.

2) Lower fixing ring

The structure of the lower fixing ring 2 is shown in Figures 6 and 7, and it is also a left-right symmetrical structure. Its structure is similar to that of the upper fixing ring 1. The straight part between the part and the connecting part.

Below the arc-shaped part of the lower fixing ring, there is also a mounting body, and a mounting hole 23 is opened in the center of the mounting body for mounting the lower fixing ring 2 on the ejection separator 5 by means of screw connection, and The ejection separator 5 is fixedly mounted on the front panel 9 of the pod rod retraction mechanism 18 .

A locking hole 21 is respectively provided on the left and right flat portions of the lower fixing ring, and the locking pin in the sliding pin locking device can just slide into the locking hole.

In addition, a connecting hole 22 is respectively provided on the left and right flat parts of the lower fixing ring, which cooperates with the upper connecting hole 14 of the upper fixing ring to realize the installation of the upper and lower ring connecting devices.

3) Slide pin locking device

The schematic diagram of the structure of the sliding pin locking device is shown in Figure 8, which includes a locking pin 41, a pre-embedded spring 42 and a casing 43 (the casing 43 is not shown in Figure 8), which is used to lock the pod rod when it is fully deployed in place, and At the same time, it is used to trigger the micro switch to generate an electrical signal.

There are also two sliding pin locking devices, namely a first sliding pin locking device 4a and a second sliding pin locking device 4b, which are arranged on the straight sections 12 on the left and right sides of the arc portion 11 of the upper fixing ring. The specific installation position is shown in Figure 4, wherein the first sliding pin locking device 4a is arranged on the straight section on the right side of the upper fixing ring arc portion 11, and the second sliding pin locking device 4b is arranged on the upper fixing ring arc On the straight section on the left side of the part 11 . In this embodiment, the housing 43 of the sliding pin locking device and the upper fixing ring 1 are integrally designed, and the two form an integral structure. A cylindrical cavity is opened inside the housing 43 , please refer to the partial cross-sectional view shown on the right side of FIG. 5( a ) for installing the locking pin 41 and the embedded spring 42 .

Figure 9 shows a schematic diagram of the structure of the locking pin 41, which is composed of two parts: the upper end of the pin 411 and the lower end of the pin 412, which are connected by threads to form a whole. This design facilitates the realization of the locking pin 41 and the pre-embedded The installation process of the spring 42 in the casing 43 is as follows: firstly, the pre-embedded spring 42 is put on the lower end 412 of the pin, the lower end 412 of the pin is placed into the cavity of the casing 43 from below, and the upper end 411 of the pin is placed from above. In the cavity of the housing 43, after the thread of the upper end 411 of the pin is aligned with the screw hole of the lower end 412 of the pin, the two can be tightened. In addition, a cylindrical protrusion 4111 is also provided on the upper end 411 of the pin.

Likewise, the embedded spring 42 also has two states of compression and extension, as shown in FIG. 10 . When the pod rod is in the unfolding process and has not been unfolded in place, the tip of the lower part of the pin lower end 412 is located above the surface of the pod rod and keeps in contact with the surface of the pod rod. At this time, the embedded spring 42 is in a compressed state, as shown in FIG. 10(a) When the pod rod is just fully deployed in place, since the pod rod is provided with a through hole 81 at the fully deployed position, the tip of the lower part of the lower end 412 of the pin can slide into the locking hole on the lower fixing ring 2 through the through hole 81 21, at this time, the embedded spring 42 is in an extended state, as shown in FIG. 10(b). Since the upper end 411 of the pin is provided with a cylindrical protrusion 4111, the locking pin 41 will not completely pass through the cavity of the housing 43, and the locking pin 41 will only be displaced downward by a certain distance.

In addition, in order to reduce the frictional force of the tip of the bottom of the lower end of the pin on the surface of the pod rod, a small rotatable pulley can also be arranged at the bottom of the lower end of the pin.

4) Upper and lower ring connecting device

The upper and lower ring connecting device is used to realize the connection between the upper fixing ring 1 and the lower fixing ring 2 , and its schematic diagram is shown in FIG. 11 .

There are two upper and lower ring connecting devices in total, namely a first upper and lower ring connecting device 3a and a second upper and lower ring connecting device 3b, both of which have the same structure and are located at the left and right sides of the arc portion 11 of the upper fixing ring. side, the specific location is shown in Figure 12.

The compression spring 32 has two states of compression and extension: when the retractable pin 72 of the pin remover is not retracted, the retractable pin 72 is in contact with the arc-shaped notch 15 of the upper fixing ring 1. The tightening spring 32 is in a compressed state due to the restriction of the retractable pin 72, and the upper fixing ring 1 is located above the lower fixing ring 2 with a certain distance, please refer to FIG. 12; when the retractable pin of the pin remover After the retraction of 72, the compression spring 32 is no longer restricted and is in an extended state, and the upper fixing ring 1 can move downward with a certain displacement until the upper fixing ring 1 and the lower fixing ring 2 stick to each other. Only when the movement is stopped, the clamping of the cross section of the pod rod can be realized, please refer to Figure 13 and Figure 14.

13 and 14 are schematic views of the stable suspension and separation mechanism of the present invention when both the sliding pin locking device and the pin remover have acted. It can be seen from Fig. 13 and Fig. 14 that when both the sliding pin locking device and the pin dismantling device operate, the embedded spring 42 and the compression spring 32 are both in an extended state. At this time, the present invention is guaranteed by two ways. The stable suspension of the mechanism on the pod rod: the first is the effect brought by the locking pin 41, specifically, the lower end of the locking pin 41 slides into the locking hole of the lower fixing ring through the through hole 81 opened on the pod rod 8 21, thus realizing the suspension of the mechanism on the pod rod; the second is the effect brought by the upper and lower ring connecting device, due to the elongation of the compression spring 32, the upper fixing ring 1 is displaced downward to a certain extent. Since the position of the lower fixing ring 2 is fixed, the double Ω-shaped cavity formed between the upper fixing ring 1 and the lower fixing ring 2 is continuously reduced. When the upper fixing ring 1 and the lower fixing ring 2 are attached to each other, The double Ω-shaped cavity between the two is exactly the same as the cross-sectional size of the pod rod 8, so that the combined action of the upper fixing ring 1 and the lower fixing ring 2 realizes the clamping of the pod rod structure.

5) Motion sensing device

The motion sensing device 6 is arranged above the sliding pin locking device and is in contact with the top holding surface of the locking pin; when the locking pin of the sliding pin locking device locks, the motion sensing device 6 The action of the locking pin can be sensed and a triggering electrical signal can be generated in real time.

In this embodiment, the motion sensing device 6 is implemented by a micro switch. The schematic structural diagram of the micro switch is shown in FIG. 15 . The downward locking action of the sliding pin locking device 4a generates a triggering electrical signal.

The installation position of the micro switch is shown in Figure 3(a), it is located just above the first sliding pin locking device 4a, and is in contact with the top of the locking pin 41 through the elastic arm 63.

In this embodiment, a normally open microswitch is used. When the embedded spring 42 is in the compressed state as shown in FIG. 10( a ), that is, when the locking pin 41 does not lock, the operation button 62 is pressed by the elastic arm 63 and is in a pressed state, and the micro switch remains off. open state, as shown in FIG. 15(a); when the embedded spring 42 is in the extended state as shown in FIG. 10(b), that is, when the locking pin 41 has been locked, the operation button 62 is not affected by the elastic boom 63 It is in the pop-up state due to the action, and the micro-switch remains in the closed state at this time, as shown in Figure 15(b), when the micro-switch is closed, a triggering electrical signal will be generated.

6) Pin remover

The schematic diagram of the structure of the pin remover is shown in Figure 16, which includes a pin remover body 71 and a retractable pin 72, which generates a retracting action of the pin under the action of the triggering electrical signal of the motion sensing device 6, thereby releasing the upper fixing ring 1 Restriction of downward movement, which in turn enables clamping of the pod rod. The situation when the retractable pin is not retracted is shown in Figure 16(a), and the situation when the retractable pin has been retracted is shown in Figure 16(b).

There are two pin removers in total, namely a first pin remover 7a and a second pin remover 7b, which are respectively arranged between the sliding pin locking device and the connecting portion 13 of the upper fixing ring, and their specific positions are shown in Figure 12. Show.

7) Eject the separator

Schematic diagrams of the assembly composed of the ejection separator 5 and the lower fixing ring 2 are shown in FIG. 17 and FIG. 18 . 17 and 18, it can be seen that the ejection separator 5 includes an ejection separator body 51 and an ejection separation head 52. By using the fixing screws 53 to pass through the mounting holes 23 provided on the lower fixing ring 2, the lower fixing ring is fixed. 2 is fixedly mounted on the ejection separator 5 .

When the ejection separator 5 receives the triggering electrical signal from the motion sensing device 6, the ejection separation head 52 and the ejection separator body 51 will be separated, thereby realizing the lower fixing ring 2 and the installed device (ie, the pod rod extension mechanism). 18) separation between.

The working principle and working process of the stable suspension and separation mechanism of the pod rod for spacecraft according to the present invention will be further clarified below with reference to specific embodiments.

As shown in FIG. 19 , it is a schematic diagram of the installation of the stable suspension and separation mechanism on the front panel 9 of the retractable mechanism according to the embodiment of the present invention. The micro switch is mounted on the front face of the front panel 9 of the retractable mechanism by screws, and the pop-up separator body 51 of the pop-up separator 5, the pin remover body 71 of the first pin remover 7a and the second pin remover 7b all pass through. The screws are installed on the back of the front panel 9 of the retractable mechanism. The front center of the ejection separator body 51 is installed with an ejection separation head 52 . The upper fixing ring 1 is installed above the lower fixing ring 2 through the first upper and lower ring connecting device 3a and the second upper and lower ring connecting device 3b. It is worth noting that the upper fixing ring 1 is not connected with the front panel 9 of the retracting mechanism, and the two There is a certain distance between them. The locking pins 41 and the pre-embedded springs 42 of the first sliding pin locking device 4 a and the second sliding pin locking device 4 b are pre-assembled in the cavity of the housing 43 . The retractable pins 72 of the first pin remover 7a and the second pin remover 7b are in an unretracted state, and are arranged between the upper fixing ring 1 and the lower fixing ring 2 through the arc-shaped notches 15 on the upper fixing ring 1 . so that a certain height distance is maintained between the upper fixing ring 1 and the lower fixing ring 2 . The reel assembly 10 of the retracting mechanism is arranged inside the pod bar retracting mechanism 18, the pod bar 8 is stored on the reel assembly 10 of the retracting mechanism in a winding manner, and a front panel 9 of the retracting mechanism is provided with a The pod rod unfolds the outlet, and the height of the unfolding outlet is the same as the position and height of the cavity formed between the upper fixing ring 1 and the lower fixing ring 2 in the mechanism of the present invention, so that the pod rod 8 can just pass through the extension mechanism first. The outlet of the pod rod on the front panel 9 is unfolded, and then continuously displayed outward through the cavity formed by the upper fixing ring 1 and the lower fixing ring 2. The "outside" mentioned here corresponds to the arrow marked on the left side in FIG. 19 . direction.

In this embodiment, both the first pin remover 7a and the second pin remover 7b are P5 pin removers produced by Ensign-Bickford Aerospace & Defense Company in the United States, with a mass of 30g and a power consumption of 1.25W , the maximum pulling force is 440N; the ejection separator 5 adopts the E250 ejection separation mechanism produced by Beckford Aerospace and Defense Company of the United States, with a mass of 75g, a power consumption of 1.9W, and a maximum preload force of 1100N; the motion sensing device 6 adopts a constant Open micro switch.

During the unfolding process of the pod rod 8, the lower ends of the locking pins 41 of the first sliding pin locking device 4a and the second sliding pin locking device 4b both slide on the surface of the pod rod 8. Due to the obstruction of the pod rod 8, the first sliding The pre-embedded springs 42 in the pin locking device 4a and the second sliding pin locking device 4b are both in a compressed state, so that the locking pin 41 cannot fall. Since a micro switch is also provided above the first sliding pin locking device 4a, its elastic arm 63 is supported by the locking pin 41 to keep the operation button 62 in a pressed state (please refer to FIG. 15a ). The switch remains off.

When the pod rod 8 is fully deployed in place, two through holes 81 are formed at the edge positions of the ideal extended length of the pod rod, as shown in FIG. Through the through hole 81, it slides into the locking hole 21 on the lower fixing ring 2, so that the embedded spring 42 becomes an extended state, and the upper end of the locking pin 41 also slides down to a certain height, and no longer presses the fretting The elastic arm 63 of the switch, so that the operation button 62 is in the open state, at this time, the micro switch will be closed, and at the same time, a triggering electric signal will be generated, and the triggering electric signal will be transmitted to the first pin remover 7a, the first pin Two-pin remover 7b and ejection separator 5. Under the action of the triggering electrical signal, the retractable pins 72 of the first pin remover 7a and the second pin remover 7b will retract immediately, and the effect is that the retractable pins 72 are fixed from the top of the ring 1 . The upper arc-shaped gap 15 is retracted. At this time, the compression spring 32 in the upper and lower ring connecting device is no longer restricted and returns to an extended state, so that the upper fixing ring 1 can move downward with a certain displacement until the upper Until the fixing ring 1 and the lower fixing ring 2 are attached to each other, since the double Ω-shaped cavity between the upper fixing ring 1 and the lower fixing ring 2 is exactly the same as the cross-sectional size of the pod rod 8 when the upper fixing ring 1 and the lower fixing ring 2 are attached to each other. The joint action of the upper fixing ring 1 and the lower fixing ring 2 realizes the clamping of the pod rod structure. At the same time, under the action of the triggering electrical signal, the pop-up separator 5 will start to separate immediately, the pop-up separator head 52 is ejected from the pop-up separator body 51, and the connection between the lower fixing ring 2 and the front panel 9 of the retractable mechanism is disconnected , to separate the two. FIG. 20 and FIG. 21 are schematic diagrams of the stable suspension and separation mechanism of the embodiment of the present invention completing the stable suspension on the pod rod. As can be seen from Figure 20 and Figure 21, the upper fixing ring 1, the lower fixing ring 2, the first upper and lower ring connecting device 3a, the second upper and lower ring connecting device 3b, the first sliding pin locking device 4a, the second sliding pin locking device 4b as well as the ejection separation head 52 and the set screw 53 of the ejection separator 5 are attached to the unfolded pod rod 8, while the microswitch, the first pin remover 7a, the second pin remover 7b and the ejection separator 5 The pop-up separator body 51 remains on the front panel 9 of the retracting mechanism.

To sum up, the beneficial technical effects obtained by the present invention are mainly reflected in the following aspects:

First, the present invention realizes the stable suspension of the film structure on the pod rod through the combined use of two technical approaches: the first approach is to use two sliding pin locking devices, by passing the lower end of the locking pin through the pod rod. The through hole opened on the upper part slides into the locking hole of the lower fixing ring, and the locking of the left and right sides of the pod rod by the mechanism of the present invention is realized; There are two upper and lower ring connecting devices and two dismantling devices. When the pin dismantling device removes the restraint, the upper fixing ring can move downward to a certain degree under the action of the compression spring in the upper and lower ring connecting devices, thereby reducing the size of the upper fixing ring. The double Ω-shaped cavity formed between the lower fixing ring and the lower fixing ring, thereby realizing the tightening of the cross section of the pod rod.

Second, the present invention adopts a pop-up separator to realize the separation between the mechanism and the pod rod retracting mechanism, which has the advantages of simplicity and effectiveness.

Thirdly, the present invention adopts an action sensing device (micro switch) arranged above the sliding pin locking device to capture the signal that triggers the tightening of the upper fixed ring and the separation of the mechanism, which is sensitive and reliable.

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the inventive concept of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A stable suspension and separation mechanism of a pod rod for a spacecraft is characterized by comprising an upper fixing ring, a lower fixing ring, an upper ring and lower ring connecting device, a sliding pin locking device, an action sensing device, a pin detacher and a pop-up separator;

the lower fixing ring is arranged below the upper fixing ring, a locking hole and a mounting hole are formed in the lower fixing ring, and the lower fixing ring is fixedly mounted on the ejection separator through the mounting hole;

the upper and lower ring connecting device comprises a lateral bracket and a compression spring and is used for realizing the connection of the upper fixing ring and the lower fixing ring;

the sliding pin locking device comprises a locking pin, an embedded spring and a shell and is arranged on the upper fixing ring; when the pod rod is completely unfolded in place, the locking pin passes through a through hole formed in the pod rod under the action of the embedded spring and slides into a locking hole of the lower fixing ring;

the motion sensing device is arranged above the sliding pin locking device and is in surface contact with the top of the locking pin; when the locking pin of the sliding pin locking device is locked, the motion sensing device can sense the motion of the locking pin and generate a trigger electric signal in real time;

the pin remover comprises a pin remover body and a retractable pin, and the retractable pin is arranged between the upper fixing ring and the lower fixing ring; the retractable pin of the pin detacher retracts under the action of a trigger electric signal generated by the action sensing device to release the limitation of downward movement of the upper fixing ring;

when the retractable pin retracts, the upper fixing ring moves downwards under the action of the compression spring of the upper ring and lower ring connecting device, so that the pod rods are clasped;

the ejection separator comprises an ejection separator body and an ejection separation head and is fixedly arranged on the pod rod folding and unfolding mechanism; the popping separation head of the popping separator is under the action of a trigger electric signal generated by the action sensing device, and the popping separator body is separated, so that the separation of the lower fixing ring and the pod rod folding and unfolding mechanism is realized.

2. The mechanism of claim 1, wherein said upper retainer ring includes an arcuate portion, a straight portion and a connecting portion, said arcuate portion being located at the center of said upper retainer ring and having a shape substantially the same as the cross-sectional shape of the upper surface of the pod rod, said arcuate portion being substantially omega-shaped; the two connecting parts are respectively positioned at the leftmost side and the rightmost side of the upper fixing ring and are used for connecting the film structures; the straight part is also provided with two sections which are respectively positioned between the arc part and the two connecting parts;

the lower fixing ring also comprises an arc-shaped part positioned in the center, a connecting part positioned on two outer sides, and a straight part positioned between the arc-shaped part and the connecting part.

3. A pod rod stabilizing suspension and separation mechanism for a spacecraft as claimed in claim 2, wherein said upper and lower ring connecting means are provided in two and are provided on the left and right sides of the arc portion of said upper fixing ring.

4. A mechanism for the stable suspension and separation of pod rods for spacecraft as set forth in claim 2, wherein said slide pin locking means are provided in two in number, respectively, a first slide pin locking means provided on the straight section on the right side of said upper fixed ring arc-shaped portion and a second slide pin locking means provided on the straight section on the left side of said upper fixed ring arc-shaped portion.

5. A mechanism for the secure suspension and detachment of pod rods for spacecraft of claim 4, wherein said motion sensing means employs micro switches positioned above said first sliding pin locking means; the microswitch comprises a switch body, an operating button and an elastic movable arm, wherein the elastic movable arm is in surface contact with the top of the locking pin; when the locking pin of the sliding pin locking device is locked, the operating button is changed into an elastic opening state, the microswitch is changed into a closing state, and a trigger electric signal is generated.

6. A mechanism for securely suspending and releasing a pod rod for a spacecraft as recited in claim 1, wherein said locking pin comprises an upper pin end and a lower pin end, said upper pin end and said lower pin end being threadably connected as a unit; the upper end of the pin is provided with a cylindrical protruding part, and the bottom of the lower end of the pin is provided with a small rotatable pulley.

7. A stable suspension and release mechanism for pod rods for spacecraft as set forth in claim 2, wherein said pin detachers are provided in two numbers, a vertical position being provided between said upper fixing ring and said lower fixing ring, respectively, and a horizontal position being provided between the connecting portions of said slide pin locking means and said upper fixing ring, respectively.

8. A mechanism for securely suspending and separating pod rods for a spacecraft as claimed in claim 1, wherein said ejection separator head remains on the pod rods after deployment and said ejection separator body remains on the pod rod retraction mechanism after the ejection separator has been disengaged.

9. A mechanism for the secure suspension and separation of pod rods for a spacecraft as set forth in claim 1, wherein said upper retainer ring is provided with an arcuate notch, and said retractable pin of said pin remover contacts said arcuate notch.

10. A mechanism for securely suspending and separating a pod rod for a spacecraft as claimed in claim 1, wherein said housing of said slide pin locking means and said upper fixing ring are of an integral design, both of which form a unitary structure.

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