Novel electromagnetic drive ejection type locking release device and spaceflight equipment

Abstract

The application provides a novel electromagnetic drive ejection type locking release device and space equipment in the field of mechanical devices, which comprises a sub-star, a top rod, a shell, an unlocking spring, a locking claw frame, an electromagnet, a magnetic frame, an unlocking rod, a limiting bearing, a locking claw, a limiting bearing seat, a suction piece and a mother star, the unlocking rod is fixedly connected with the shell through the magnetic frame, the shell is connected with the sub-star, the unlocking spring is sleeved on the unlocking rod, the unlocking spring is located between the shell and the magnetic frame, the electromagnet is fixedly connected with the magnetic frame, the locking claw is connected with the locking claw frame respectively, the top rod is connected with the limiting bearing seat, one end of the limiting bearing seat is connected with the limiting bearing, the other end of the limiting bearing seat is fixedly connected with the suction piece, and the locking claw frame, the magnetic frame and the mother star are fixedly connected as a whole. The device is locked through cooperation between the locking claw, the locking inclined surface and the limiting bearing, has simple structure, can realize firm locking between units by only small force, has high space utilization rate, is ejected and unlocked by power-off of the electromagnet, is rapidly actuated and can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical devices, in particular, to a new electromagnetic drive ejection type locking release device and space equipment. BACKGROUND

[0002] In view of the construction needs of super-large sub-satellite systems such as space-based integrated information acquisition and space-based information port, and based on the current carrying capacity, a construction idea of large-scale assemblable and reconfigurable sub-satellite platform is proposed. The platform needs to be assembled in orbit through multiple launches, and a device for on-orbit separation and recovery of micro sub-satellites needs to be developed. Using the device, the large space base can repeatedly separate and recover multiple micro sub-satellites in orbit.

[0003] In order to adapt to the locking and unlocking needs of on-orbit assembly and docking of various space objects, a locking release device is designed to meet the locking and fixing after the docking between space objects. In addition, the device also needs to have the function of ejection separation in order to meet the rapid separation needs between space objects.

[0004] The electromagnetic drive type locking release device developed for the above problems should have the functions of strong universality, simple structure, repeated locking and unlocking, and ejection separation.

[0005] After searching the prior art, patent document CN111731520A discloses a locking release device for a spaceborne antenna. The scheme adopts a memory alloy nut drive, realizes locking through a threaded connection structure, and the unlocking time required by power supply is relatively long. The structure needs to be further optimized. Patent document CN111456986A discloses a memory alloy locking release mechanism, which is only suitable for axial locking working occasions and has strict requirements on the arrangement of locking points and the locking mode. Patent document CN111284731A discloses an electromagnetic drive locking release mechanism, which has a complex structure and is only suitable for point-type locking of micro satellites. Patent document CN112027122A discloses a locking release device based on SMA, which adopts a two-stage pusher bearing structure and has a large size, which cannot adapt to the locking working conditions in narrow space. Patent document CN111547277A discloses an automatic locking release mechanism with limiting function and a locking release operation method. The device uses a stepper motor to drive a screw rod for locking, and can repeatedly lock and release. However, a high-power power supply needs to be added, which increases the use cost of the device. The present scheme adopts a locking claw and locking slope combination locking mode combined with spring ejection unlocking triggered by electromagnetic iron. The device has a simple structure, can realize firm locking with small force, has high space utilization, can realize repeated locking and unlocking, and can realize instantaneous ejection unlocking, which greatly reduces the unlocking time. SUMMARY

[0006] In view of the defects in the prior art, the purpose of the present application is to use the cooperation of the locking claw and the locking slope to save labor and lock, and the disconnection of the electromagnet can trigger the spring ejection unlocking, and a labor-saving and reliable locking and instantaneous ejection separation unlocking device and space equipment are designed, the device structure is simple, the operation is rapid, and the device can be repeatedly used multiple times.

[0007] According to the novel electromagnetic drive ejection type locking release device provided by the application, the device comprises a sub-star, a top rod, a shell, an unlocking spring, a locking claw frame, an electromagnet, a magnetic frame, an unlocking rod, a limiting bearing, a locking claw, a limiting bearing seat, a suction piece and a mother star, the unlocking rod is fixedly connected with the magnetic frame and the shell, the shell is connected with the sub-star, the unlocking spring is sleeved on the unlocking rod, and the unlocking spring is located between the shell and the magnetic frame, the electromagnet is fixedly connected with the magnetic frame, the locking claw is connected with the locking claw frame, the top rod is connected with the limiting bearing seat, one end of the limiting bearing seat is connected with the limiting bearing, the other end of the limiting bearing seat is fixedly connected with the suction piece, and the locking claw frame, the magnetic frame and the mother star are fixedly connected as a whole.

[0008] Preferably, the shell is switched between the unlocking state and the locking state;

[0009] When in the unlocking state, the unlocking rod pushes the shell to move left under the action of the unlocking spring, so that the sub-star is ejected and released;

[0010] When in the locking state, the sub-star moves right, the locking claw rotates and opens along the hinge point, the suction piece is fixed on the electromagnet, and the shell is locked through cooperation with the locking claw.

[0011] Preferably, after the locking claw is released, the shell is pushed out under the action of the unlocking spring, and the speed adjustment of the separation of the sub-star is realized by adjusting the rigidity of the unlocking spring.

[0012] Preferably, the top rod pushes the limiting bearing seat, and then drives the limiting bearing to move, and the limiting bearing is clamped into the inner end surface of the locking claw to limit the rotation of the locking claw.

[0013] Preferably, the shell is provided with a locking slope, the locking slope cooperates with the outer end surface of the locking claw to form a force amplification locking mechanism, and the shell realizes locking through the force amplification locking mechanism.

[0014] Preferably, the suction piece is in surface contact with the electromagnet, and the electromagnet attracts or releases the suction piece by being electrified or being disconnected.

[0015] Preferably, the electromagnet is electrified to attract the suction piece when ejection, and then the suction piece is instantaneously released by instantaneous disconnection.

[0016] Preferably, one end of the limiting bearing seat passes through the through hole of the locking claw frame, and one end of the limiting bearing seat is hingedly connected with the limiting bearing.

[0017] Preferably, the unlocking rod, the limiting bearing and the locking claw are symmetrically arranged.

[0018] The application also provides a space device comprising the new electromagnetic drive ejection type locking release device.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] (1) The application realizes the connection and separation of large-scale assemblable reconfigurable star bodies after docking by ejection type locking release through electromagnetic drive, and the device has simple structure, small size and high space utilization rate;

[0021] (2) The application limits the rotation of the locking claw by embedding the limiting bearing into the inner end face of the locking claw, and the limiting bearing replaces sliding friction with rolling friction to reduce the friction loss between units, and the outer end face of the locking claw cooperates with the locking inclined surface to form a force amplification locking mechanism to limit the displacement of the shell with very small force, so that the device realizes labor-saving and reliable locking, and the locking device has compact structure and more reliable locking between units;

[0022] (3) The application releases the locking claw by disconnecting the electromagnet from the suction piece, and the limiting bearing releases the limiting of the locking claw, and the unlocking spring is released to realize the instantaneous ejection unlocking of the sub-star, which greatly reduces the unlocking time, and avoids the structural damage and waste gas pollution caused by the traditional explosive unlocking;

[0023] (4) The device can be repeatedly used, and will not be structurally damaged during unlocking and locking, and does not need to replace parts before the next operation, thereby reducing the operation difficulty of the locking and unlocking process. BRIEF DESCRIPTION OF DRAWINGS

[0024] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 is a fully locked state of the new electromagnetic drive ejection type locking release device described in the application;

[0026] Figure 2 is an unlocking preparation state of the new electromagnetic drive ejection type locking release device described in the application;

[0027] Figure 3 is a state of the new electromagnetic drive ejection type locking release device described in the application, in which the limiting bearing seat is ejected when the electromagnet is disconnected;

[0028] Figure 4 is a state of the new electromagnetic drive ejection type locking release device described in the application, in which the limiting of the locking claw is released;

[0029] Figure 5 is a state of the new electromagnetic drive ejection type locking release device described in the application, in which the ejection unlocking is realized;

[0030] Figure 6 It is a new electromagnetic drive ejecting type locking release device shell reset preparation state described in the application.

[0031] Figure 7 It is a new electromagnetic drive ejecting type locking release device locking preparation state described in the application.

[0032] As shown in the figure: sub-star 1, top rod 2, shell 3, unlocking spring 4, locking claw frame 5, electromagnet 6, magnetic frame 7, unlocking rod 8, limit bearing 9, locking claw 10, limit bearing seat 11, suction piece 12, female star 13. DETAILED DESCRIPTION

[0033] The application will be described in detail below in conjunction with specific examples. The following examples will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that for those skilled in the art, without departing from the concept of the application, a number of changes and improvements can be made. These are within the scope of the application.

[0034] Example 1

[0035] The application provides a new electromagnetic drive ejecting type locking release device, as shown in Figures 1-5 The device includes two unlocking springs 4, two unlocking rods 8, two locking claws 10, two limit bearings 9, one top rod 2, one limit bearing seat 11, one suction piece 12, one electromagnet 6, shell 3, locking claw frame 5, magnetic frame 7, sub-star 1 and female star 13. Two symmetrically arranged unlocking rods 8 pass through the magnetic frame 7 and are fixedly connected with the shell 3, the unlocking spring 4 is sleeved on the unlocking rod 8 and located between the shell 3 and the magnetic frame 7, the electromagnet 6 is fixedly connected with the magnetic frame 7, two symmetrically arranged locking claws 10 are respectively hinged with the locking claw frame 5, the limit bearing seat 11 is hingedly connected with two symmetrically arranged limit bearings 9 through the one end of the through hole of the locking claw frame 5, and the other end is fixedly connected with the suction piece 12, and the locking claw frame 5, the magnetic frame 7 and the female star 13 are fixedly connected as a whole.

[0036] The sub-star 1 is locked by the matched locking mechanism. The ejector rod 2 can push the limit bearing seat 11 to drive the limit bearing 9 to move, and the limit bearing 9 is clamped into the inner end face of the locking claw 10 to limit the rotation of the locking claw 10. The inner side of the shell 3 is machined with a locking slope which can cooperate with the outer side slope of the locking claw 10, and the slopes of the two can cooperate with each other to lock the shell 3. After the symmetrical locking claws 10 are released, the shell 3 can be quickly pushed out at a certain speed under the action of the unlocking spring 4, and the stiffness of the unlocking spring 4 is adjustable to realize the speed adjustment of the separated sub-star. The suction piece 12 can be in surface contact with the electromagnet 6, and the electromagnet 6 can attract or release the suction piece 12 by being electrified or de-energized. The electromagnet 6 is electrified to attract the suction piece 12 when ejection is needed, and then the suction piece 12 is released instantaneously by instant de-energization, which has the characteristics of short-time power supply and low energy consumption, and the release by de-energization can ensure the consistency of multi-point unlocking and release.

[0037] When unlocking is needed, as shown in Figures 2-5 , the ejector rod 2 moves to the left limit position, the electromagnet 6 is de-energized, the suction piece 12 loses suction force and is released instantaneously to push the limit bearing seat 11 and drive the limit bearing 9 to move to the left, and the locking claw 3 is released. When the locking claw 3 is released, the locking claw 3 rotates relatively inward, the shell 3 is released, and the unlocking rod 8 starts to push the shell 3 to move to the left under the action of the unlocking spring 4 and finally realizes the ejection release of the sub-star 1.

[0038] When locking is needed, as shown in Figures 6-7 , the sub-star 1 moves to the right under the action of the matched locking mechanism, pushes the shell 3 to contact with the locking claw frame 5, and the unlocking spring 4 is compressed to store energy. The ejector rod 2 pushes the limit bearing seat 11 to move to the right, and then drives the limit bearing 9 and the suction piece 12 to move to the right. With the movement of the limit bearing 2 to the right, the locking claw 10 gradually rotates and opens along the hinge point, the outer end face of the locking claw 3 gradually cooperates with the locking slope of the shell 3, and at the same time, the suction piece 12 is in surface contact with the electromagnet 6 after being electrified, and the suction piece 12 is fixed. The shell 3 is locked.

[0039] Example 2

[0040] The application also provides a spaceflight equipment comprising the novel electromagnetic drive ejection type locking and releasing device in embodiment 1.

[0041] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0042] The specific embodiments of the present application are described above. It should be understood that the present application is not limited to the above specific embodiments, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which do not affect the essential content of the present application. The embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other without conflict, provided that they do not conflict.

Claims

1. A novel electromagnetic drive ejection type lock release device, characterized by, The device comprises a child star (1), a top rod (2), a shell (3), an unlocking spring (4), a locking claw frame (5), an electromagnet (6), a magnetic frame (7), an unlocking rod (8), a limiting bearing (9), a locking claw (10), a limiting bearing seat (11), a suction piece (12) and a mother star (13). The unlocking rod (8) is fixedly connected with the magnetic frame (7) and the shell (3), the shell (3) is connected with the child star (1), the unlocking spring (4) is sleeved on the unlocking rod (8) and located between the shell (3) and the magnetic frame (7), the electromagnet (6) is fixedly connected with the magnetic frame (7), the locking claw (10) is connected with the locking claw frame (5) respectively, the top rod (2) is connected with the limiting bearing seat (11), one end of the limiting bearing seat (11) is connected with the limiting bearing (9), the other end of the limiting bearing seat (11) is fixedly connected with the suction piece (12), the locking claw frame (5), the magnetic frame (7) and the mother star (13) are integrally connected. The shell (3) is switched between an unlocking state and a locking state. When in the unlocking state, the unlocking rod (8) pushes the shell (3) to move left under the action of the unlocking spring (4), so as to realize the ejection release of the child star (1). When in the locking state, the child star (1) moves right, the locking claw (10) rotates and opens along the hinge point, the suction piece (12) is fixed on the electromagnet (6), and the shell (3) is locked through cooperation with the locking claw (10). The top rod (2) pushes the limiting bearing seat (11), and then drives the limiting bearing (9) to move, the limiting bearing (9) is clamped into the inner end surface of the locking claw (10) to limit the rotation of the locking claw (10). A locking slope is arranged on the shell (3), the locking slope cooperates with the outer end surface of the locking claw (10) to form a force amplification locking mechanism, and the shell (3) is locked through the force amplification locking mechanism.

2. The novel electromagnetic drive ejection type lock release device according to claim 1, characterized by, After the locking claw (10) is released, the shell (3) is pushed out under the action of the unlocking spring (4), and the speed adjustment of the separation of the child star (1) is realized by adjusting the rigidity of the unlocking spring (4).

3. The new electromagnetic drive ejection type lock release device according to claim 1, characterized in that, The suction piece (12) is in surface contact with the electromagnet (6), and the electromagnet (6) is powered on or powered off to attract or release the suction piece (12).

4. The novel electromagnetic drive ejection type lock release device according to claim 3, characterized by The electromagnet (6) is powered on to attract the suction piece (12) during ejection, and then the suction piece (12) is instantaneously released by instantaneously powering off.

5. The novel electromagnetic drive ejection type lock release device according to claim 1, characterized by, One end of the limiting bearing seat (11) passes through the through hole of the locking claw frame (5), and one end of the limiting bearing seat (11) is hingedly connected with the limiting bearing (9) respectively.

6. The novel electromagnetic drive ejection type lock release device according to claim 1, characterized by The unlocking rod (8), the limiting bearing (9) and the locking claw (10) are symmetrically arranged.

7. A spacecraft, characterized by, The device comprises the novel electromagnetic drive ejection type locking release device of any one of claims 1-6. The device comprises the novel electromagnetic drive ejection type locking release device of any one of claims 1-6.

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