CN113212799A - Lock release device - Google Patents
Lock release device Download PDFInfo
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- CN113212799A CN113212799A CN202110689228.6A CN202110689228A CN113212799A CN 113212799 A CN113212799 A CN 113212799A CN 202110689228 A CN202110689228 A CN 202110689228A CN 113212799 A CN113212799 A CN 113212799A
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- lock
- radial
- release device
- locking
- connection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/10—Artificial satellites; Systems of such satellites; Interplanetary vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
Abstract
The application provides a locking release device, relate to the locking release mechanism field of two equipment mechanical separations, locking release device includes first connector, the second connector, radial locking portion and locking trigger mechanism, the second connector includes a plurality of lamella bodies, radial locking portion can move in the axial direction of second connector, in order to release the ascending motion of a plurality of lamella bodies in the radial direction of second connector, locking trigger mechanism can move towards the second connector in radial direction, in order to lock radial locking portion motion on the axial direction, and can keep away from the second connector motion on the radial direction, in order to release radial locking portion motion on the axial direction. According to the locking release device, the problem that the unlocking impact of the existing initiating explosive device is high and cannot be used for the second time is solved, and low impact release and repeated use are realized.
Description
Technical Field
The application relates to the field of locking and releasing mechanisms for mechanically separating two devices and the technical field of satellites, in particular to a locking and releasing device.
Background
Taking a compression and release device of a satellite component as an example, mechanisms such as a solar wing, an antenna and a load on the satellite need to be compressed and fixed in a launching stage, damage or damage caused by vibration is avoided, and the mechanism can be unlocked and released after orbit entering so as to work. In this process, a lock-and-release mechanism is required to perform locking and releasing of the satellite components.
The existing locking and releasing mechanism generally adopts an initiating explosive device, such as an initiating explosive device separation nut, an initiating explosive device cutter type and the like, and the initiating explosive device cuts off a bolt or a nut by using pressure generated by explosion during the working process, so that a locked screw rod or a locked structure is released to realize the predetermined movement.
However, for such an initiating explosive device, on one hand, the mass thereof is relatively large, and during actuation, a large unlocking impact is generated, and the gas generated after explosion has chemical pollution, so that the potential safety hazard is obvious; on the other hand, it is a disposable device and cannot be used for a second time.
Disclosure of Invention
In view of the problem that current priming system unblock is strikeed highly and unable secondary use, this application provides a locking release. According to the locking and releasing device, the radial locking part capable of moving in the axial direction and the locking and triggering mechanism capable of moving in the radial direction are matched, so that the problem that releasing impact in the initiating explosive device is large can be solved, and the device can be repeatedly used.
According to an aspect of the present application, there is provided a lock release device including a first connecting body, a second connecting body, a radial lock portion, and a lock trigger mechanism, the second connecting body including a plurality of petals, the first connecting body being locked between the plurality of petals by the plurality of petals in a locked state of the lock release device, the plurality of petals releasing locking of the first connecting body in a released state of the lock release device, the radial lock portion being movable in an axial direction of the second connecting body to release movement of the plurality of petals in a radial direction of the second connecting body, the lock trigger mechanism being movable toward the second connecting body in the radial direction to lock movement of the radial lock portion in the axial direction and movable away from the second connecting body in the radial direction, to release the movement of the radial locking portion in the axial direction.
Optionally, the lock release device further comprises a first release drive mechanism providing a first force to the first linkage body in the axial direction in a direction in which the first linkage body is away from the plurality of petals.
Optionally, the lock release device further comprises a stopper portion disposed in the direction of the first acting force with respect to the first connecting body to abut against the first connecting body in the direction of the first acting force in the released state of the lock release device.
Optionally, the locking and releasing device further includes a connection base, the stopper and the connection base enclose a connection body accommodation space, the first connection body and the first release driving mechanism are disposed in the connection body accommodation space, a through hole is formed in the connection base, and the first connection body can be exposed to the outside of the accommodation space through the through hole.
Optionally, the locking release device further includes a connection housing, the second connection body and the radial locking portion are disposed inside the connection housing, an opening is formed on a sidewall of the connection housing, the locking trigger mechanism includes a fixing portion and a telescopic portion that is telescopic in a radial direction of the second connection body with respect to the fixing portion, the fixing portion is fixed outside the sidewall of the connection housing, the telescopic portion is capable of extending into the connection housing through the opening, and an end surface of a free end of the telescopic portion is recessed with respect to an inner side surface of the sidewall in a retracted state of the telescopic portion.
Optionally, the second connecting body includes a large diameter portion and a small diameter portion, the lock release device further includes an axial lock driving mechanism, in a lock state of the lock release device, the radial lock portion is sleeved outside the large diameter portion, the axial lock driving mechanism applies an acting force to the radial lock portion, the acting force moves towards the small diameter portion in the axial direction, a limiting protrusion is formed on a top wall of the connecting housing, the limiting protrusion protrudes from an inner side surface of the top wall towards an inner space of the connecting housing, and in the lock state of the lock release device, an accommodating space for accommodating the axial lock driving mechanism is enclosed among the limiting protrusion, the radial lock portion and a side wall of the connecting housing.
Alternatively, a guide passage is formed on the radial locking portion, and the lock trigger mechanism is located in the guide passage in a state of locking the radial locking portion, and the guide passage restricts movement of the lock trigger mechanism in a plane perpendicular to an axial direction of the second connecting body.
Optionally, the lock release device further comprises a second release drive mechanism providing a radially outward acting force to the plurality of petals, wherein the second release drive mechanism has a bearing surface in contact with the plurality of petals and inclined with respect to the radial direction, the second release drive mechanism comprising a stopper portion disposed radially outward of the bearing surface to be able to abut the plurality of petals in the locked state of the lock release device.
Optionally, the radial locking portion comprises a locking body and a force bearing portion, and an axial dimension of the force bearing portion is smaller than an axial dimension of the locking body.
Optionally, the radial dimension of the force bearing portion is less than the radial dimension of the lock body and greater than half of the radial dimension of the lock body.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 shows a cross-sectional schematic view of a lock release device in a locked state according to an embodiment of the present application;
FIG. 2 shows a cross-sectional schematic view of a lock release device in a released state according to an embodiment of the present application;
FIG. 3 shows an exploded schematic view of a lock release device according to an embodiment of the present application;
FIG. 4 shows an exploded schematic view from another perspective of a lock release device according to an embodiment of the present application;
FIG. 5 illustrates an exploded schematic view of a connection housing and a lock trigger mechanism of a lock release device according to an embodiment of the present application;
FIG. 6 illustrates a bottom view of a connection housing and a lock trigger mechanism of a lock release device according to an embodiment of the present application.
Icon: 10-a separation section; 20-a stationary portion; 100-a first connector; 110-a connecting rod; 120-a flange portion; 200-a second linker; 210-a first petal; 220-a second petal; 300-a radial locking portion; 310-a locking body; 320-a force bearing part; 330-a guide channel; 400-a locking trigger mechanism; 410-a fixed part; 420-a telescoping section; 500-axial locking drive mechanism; 600-a connection housing; 610-a top wall; 611-a spacer; 612-a limit protrusion; 613-inclined surface portions; 620-a first sidewall; 621-opening; 630-a second sidewall; 640-a bottom cover; 641-fasteners; 700-a first release drive mechanism; 800-a second release drive mechanism; 810-a driving part; 820-a support portion; 821-a bearing surface; 822-a limiting part; 900-a connection base; 910-a stop; 911-operation opening; 920-pretension limit piece.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
An aspect of the present application provides a lock release device that can avoid the use of an initiating device to achieve lock release, reduce release impact force, and can be repeatedly used.
Although the embodiments of the lock release device of the present application are described below with reference to an application scenario of a satellite as an example, it should be understood that the application scenario of the lock release device according to the present application is not limited thereto, and the lock release device may also be applied to other configurations in which mechanical separation of two devices is required, for example, locking and releasing of a underwater exploration mechanism in an underwater working environment.
A lock release device according to an embodiment of the present application will be described in detail below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, a lock release device according to an embodiment of the present application may include a first connection body 100, a second connection body 200, a radial locking part 300, a lock trigger mechanism 400, an axial lock driving mechanism 500, a connection housing 600, a first release driving mechanism 700, a second release driving mechanism 800, and a connection base 900. The specific form of the above-described components will be described in detail below. Here, in fig. 1 and 2, in order to clearly show the positional relationship between the respective members, a connecting member (for example, a fastener 641) for connecting the respective members is omitted.
As shown in fig. 1 and 2, the first and second connection bodies 100 and 200 may be a pair of fastening mechanisms engaged with each other. For example, in the present embodiment, the first connection body 100 may be a bolt, and the second connection body 200 may be a nut, which may be fastened by screw-fitting. The first connecting body 100 may include a connecting rod 110 and a flange portion 120 protruding radially outward from the connecting rod 110, and the second connecting body 200 may include a plurality of lobes, for example, a first lobe 210 and a second lobe 220, however, the number of lobes is not limited by the present application, and may be greater than two.
The plurality of petals of the second connector 200 can be clasped with each other or separated from each other. As shown in fig. 1, in the clasped state of the second connecting body 200, the first connecting body 100 (e.g., the connecting rod 110) can be locked between the plurality of petals by the plurality of petals, for example, the plurality of petals and the connecting rod 110 can be formed with threads that cooperate with each other, and in the clasped state of the plurality of petals, the first connecting body 100 can be locked between the plurality of petals by the threaded connection. As shown in FIG. 2, in the separated state of the second connecting body 200, the screw-engagement surfaces between the first connecting body 100 and the plurality of petals are separated, the screw-engagement is disabled, and the plurality of petals release the lock of the first connecting body 100, thereby allowing the first connecting body 100 to be axially withdrawn from between the plurality of petals.
Although the first connection body 100 and the second connection body 200 are shown as screw-nut engagement mechanisms in the present embodiment, the present invention is not limited thereto, and the first connection body 100 and the second connection body 200 may be engaged in other manners, such as a plurality of petals and a connection rod 110 may be engaged with each other, as long as the second connection body 200 can be locked with the first connection body 100 in a clasped state and allows the first connection body 100 to be axially withdrawn in a separated state.
Further, in this context, the axial direction refers to the direction of relative movement of the first connecting body with respect to the second connecting body, and the radial direction refers to the direction in which the plurality of lobes of the second connecting body move in a plane perpendicular to the axial direction from the clasped state to the separated state or from the separated state to the clasped state.
The radial locking portion 300 is movable in the axial direction of the second connecting body 200 to lock and release the movement of the plurality of lobes of the second connecting body 200 in the radial direction of the second connecting body 200.
Specifically, the radial locking portion 300 may be sleeved outside the second connecting body 200, as shown in fig. 3, the second connecting body 200 may include a large diameter portion and a small diameter portion, and the radial locking portion 300 may be cylindrical, and a radial inner surface of the radial locking portion may be matched with a radial outer surface of the large diameter portion of the second connecting body 200 in a clasped state to limit a plurality of lobes of the second connecting body 200 from moving in a radial direction. The inner diameter of the radial locking part 300 may be equal to the outer diameter of the large diameter part of the second connecting body 200 in the clasped state and greater than the outer diameter of the small diameter part of the second connecting body 200 in the clasped state. As shown in fig. 2, when the radial locking part 300 moves to a position of a small diameter part in an axial direction of the second connecting body 200, since there is a space between a radial outer surface of the small diameter part and a radial inner surface of the radial locking part 300, a plurality of petals (e.g., the first petal 210 and the second petal 220 in fig. 2) of the second connecting body 200 may be allowed to move in a radial direction to be separated from each other, so that locking of the first connecting body 100 may be released.
The lock trigger mechanism 400 is movable in a radial direction toward the second connecting body 200 to lock the movement of the radial lock portion 300 in an axial direction, and the lock trigger mechanism 400 is movable in a radial direction away from the second connecting body 200 to release the movement of the radial lock portion 300 in the axial direction.
Specifically, as shown in fig. 1 and 2, the locking trigger mechanism 400 may include a fixing portion 410 and an expansion portion 420 that is expandable and contractible in a radial direction of the second connection body 200 with respect to the fixing portion 410. As shown in fig. 1, when the telescopic part 420 is extended with respect to the fixing part 410, the telescopic part 420 may abut against a lower surface (i.e., a surface close to the small diameter part in the axial direction) of the radial lock part 300 to restrict the movement of the radial lock part 300 toward the small diameter part in the axial direction. As shown in fig. 2, the telescopic part 420 allows movement of the radial lock 300 toward a small diameter part in an axial direction when the telescopic part 420 is retracted with respect to the fixing part 410. The fixing part 410 may have a hollow part in which the expansion part 420 is disposed, and one end of the expansion part 420 is always maintained in the hollow part while the other end may be extended or retracted with respect to the hollow part.
The lock trigger mechanism 400 may be formed as an electrostrictive mechanism, a hydraulic-stretching mechanism, etc., for example, the fixing portion 410 may be formed as a sleeve, and the stretching portion 420 may be formed as a telescopic rod installed in the sleeve, so that the telescopic rod is driven to be extended or retracted from the sleeve by an electric or hydraulic means.
Preferably, as an example, the expansion part 420 may also be formed of a memory alloy, in which case, in an example, when the fixing part 410 is heated, the temperature of the expansion part 420 may be increased so that the length thereof may be reduced to be contracted inside the fixing part 410; when the fixing portion 410 is cooled, the temperature of the expansion portion 420 may be lowered, so that the length thereof may be increased to protrude from the fixing portion 410. In another example, the expansion part 420 formed of a memory alloy may be electrically connected to an external power source, so that the expansion part 420 may be heated by applying electricity thereto, thereby realizing expansion and contraction of the expansion part 420 within the fixing part 410.
As another example, the locking trigger mechanism 400 may be extended and retracted by electromagnetic attraction, by energizing the fixing portion 410 and changing the magnetic pole direction of the fixing portion 410, such that the extending portion 420 and the fixing portion 410 repel each other to extend from the fixing portion 410, and such that the extending portion 420 and the fixing portion 410 attract each other to retract into the fixing portion 410. In this example, the expansion part 420 may be extended or retracted with respect to the fixing part 410 by electromagnetic induction.
As yet another example, the hollow portion of the fixing portion 410 may be filled with paraffin, and the paraffin may be sealed in the hollow portion, for example, between the fixing portion 410 and the expansion portion 420. When the paraffin wax is heated to shrink and flow, the expansion part 420 can be contracted into the fixing part 410; when the paraffin is cooled, the expansion part 420 may be extended from the fixing part 410.
The axial lock drive mechanism 500 may provide a force of movement of the radial lock portion 300 in the axial direction toward the small diameter portion. Taking the embodiment of fig. 1 and 2 as an example, the axial lock drive mechanism 500 may be formed in the form of a compression spring, and in the locked state of fig. 1, the elastic force of the axial lock drive mechanism 500 received by the radial lock portion 300 and the abutting force of the expansion portion 420 form a balanced state, so that the radial lock portion 300 is held at the position of the large diameter portion in the axial direction to restrict the radial separation of the plurality of petals. However, the axial lock driving mechanism 500 is not limited thereto, and it may be formed in other forms, for example, it may be formed as an elastic cord, one end of which may be connected to a lower surface of the radial lock portion 300 and the other end of which may be fixed to a surface facing the lower surface of the radial lock portion 300 (for example, an inner side surface of a bottom cover 640, which will be described later), and in a locked state, the elastic cord may be in a tensioned state, and when the telescopic portion 420 releases the radial lock portion 300, the elastic cord may move the radial lock portion 300 toward a small diameter portion by the tensioning force.
In this embodiment, the radial locking portion 300 may advantageously include a locking body 310 and a force bearing portion 320. The locking body 310 may be formed in a cylindrical shape, and the force-bearing portion 320 protrudes radially outward from the locking body 310. The forces of the axial lock drive mechanism 500 and the telescoping portion 420 are both applied to the force bearing portion 320.
In the case where the axial lock driving mechanism 500 is formed as a compression spring, the urging force of the axial lock driving mechanism 500 and the urging force of the expanding and contracting portion 420 are respectively applied to the two surfaces of the force bearing portion 320 which are opposite in the axial direction, so that it is possible to contribute to maintaining the force balance of the radial lock portion 300. As shown in fig. 1, a stepped space may be formed between the force-bearing portion 320 and the lock body 310, that is, an axial dimension (or axial thickness) of the force-bearing portion 320 may be smaller than an axial dimension (or axial thickness) of the lock body 310, and the axial lock driving mechanism 500 may be located in the stepped space to facilitate reduction of the axial dimension of the lock release device. Further, considering that the axial dimension of the bearing portion 320 being smaller than the axial dimension of the lock body 310 may weaken the connection strength between the bearing portion 320 and the lock body 310, when the radial lock 300 is axially released, the force of the axial lock driving mechanism 500 may damage (e.g., crack or break) the connection portion between the bearing portion 320 and the lock body 310, and therefore, preferably, the radial dimension d2 of the bearing portion 320 (i.e., the distance from the connection position of the bearing portion 320 with the lock body 310 to the radially outer edge of the bearing portion 320) may be formed to be smaller than the radial dimension d1 of the lock body 310 (i.e., the difference between the outer diameter and the inner diameter of the lock body 310) and larger than half of the radial dimension d1 of the lock body 310, and the radial dimension of the bearing portion 320 is satisfied with the radial direction of the axial lock driving mechanism 500, specifically, the outer diameter of the bearing portion 320 is larger than the outer diameter of the axial lock driving mechanism 500, and the axial dimension of the force-bearing portion 320 may be formed to be less than half of the axial dimension of the locking body 310 and greater than one third of the axial dimension of the locking body 310, and the compression pre-tightening force of the axial locking driving mechanism 500 can be satisfied, so that the reliability of the connection between the force-bearing portion 320 and the locking body 310 can be ensured when the radial locking portion 300 is axially released.
On the basis of the above-mentioned construction, it is further advantageous that, in the extended state of the telescopic part 420, the radial dimension d3 of the contact portion of the telescopic part 420 and the force bearing part 320 is smaller than the radial dimension d2 of the force bearing part 320 and greater than or equal to two thirds of the radial dimension d2 of the force bearing part 320, and the radial dimension d3 of the contact portion of the telescopic part 420 and the force bearing part 320 satisfies that the telescopic part 420 has a certain strength margin under the pressure of the force bearing part 320 and can be contracted into the fixing part 410 under the pressure, and the distance from the position of the force application point of the axial lock driving mechanism 500 to the position where the force bearing part 320 is connected with the lock body 310 is greater than or equal to two thirds of the radial dimension d2 of the force bearing part 320, and the dimensions of the force bearing part 320, the telescopic part 420 and the axial lock driving mechanism 500 are matched to be favorable for maintaining the force balance of the radial lock 300 in the extended state of the telescopic part 420, and the radial lock portion 300 can be maintained in a stable state all the time during the retraction of the telescopic portion 420, and particularly, such a dimensional design can ensure that the radial lock portion 300 is always in a stable state regardless of the retraction speed of the telescopic portion 420, and the radial lock portion 300 can move smoothly only under the action of the unidirectional force exerted by the axial lock driving mechanism 500 even if the telescopic portion 420 is retracted at a relatively large speed.
Further, as shown in fig. 4, the radial lock portion 300 may be formed with a guide channel 330, the lock trigger mechanism 400 may be located in the guide channel 330 in the extended state, and the guide channel 330 may limit the movement of the lock trigger mechanism 400 in a plane direction perpendicular to the axial direction of the second connection body 200. As an example, the guide passage 330 may be formed on the lower surface of the radial lock portion 300, and the passage sidewalls at the inlet and outlet of the guide passage 330 may be formed with chamfers, so that collision or friction with the passage sidewalls may be reduced or avoided during the extension and contraction of the lock trigger mechanism 400, thereby preventing the passage sidewalls from causing damage to the lock trigger mechanism 400 while guiding the extension and contraction movement of the lock trigger mechanism 400 through the guide passage 330.
As shown in fig. 3 and 4, the second connection body 200 and the radial locking part 300 may be accommodated inside the connection housing 600. One side of the connection housing 600 may be completely opened, and specifically, the connection housing 600 may have a top wall 610, a first sidewall 620, and a second sidewall 630.
The top wall 610 may have a through-hole, the top wall 610 may be disposed to face the connection base 900 to be described later, and the through-hole of the top wall 610 may be aligned with the through-hole of the connection base 900, so that the first connection body 100 is penetrated into the second connection body 200 via the through-hole of the connection base 900 and the through-hole of the top wall 610.
As shown in fig. 5 and 6, the inner side of the top wall 610 may be formed with a spacer portion 611, and the spacer portion 611 may protrude from the inner side surface of the top wall 610 toward the second connecting body 200 to extend between the plurality of lobes of the second connecting body 200, so that the plurality of lobes may be located between the plurality of lobes in a clasped state, for example, the number of the spacer portions 611 may be determined according to the number of the lobes, and one spacer portion 611 may be formed between every two adjacent lobes. The spacers 611 prevent the flaps from contacting each other even in the clasped state, so as to prevent the flaps from being excessively clasped under the radial force of the radial locking portion 300, and abrasion or extrusion between the flaps is avoided.
The inner side of the top wall 610 may be formed with a stopper protrusion 612, the stopper protrusion 612 may protrude from the inner side surface of the top wall 610 toward the inner space of the connection housing 600, and an end surface of a free end of the stopper protrusion 612 may abut the radial lock 300. In the locked state, a receiving space for receiving the axial lock driving mechanism 500 may be defined between the limiting protrusion 612, the radial lock portion 300 and the side wall (e.g., the first side wall 620 and the second side wall 630) of the connection housing 600, and the axial lock driving mechanism 500 may be limited in the receiving space, and the matching structure of the limiting protrusion 612, the radial lock portion 300 and the side wall of the connection housing 600 is particularly advantageous for positioning the axial lock driving mechanism 500 when the axial lock driving mechanism 500 is assembled, and the assembly process is simplified.
The first sidewall 620 has an opening 621 formed therein, the fixing portion 410 is fixed to the outside of the first sidewall 620 of the connection housing 600, and the expansion portion 420 can be inserted into the connection housing 600 through the opening 621. For example, the fixing portion 410 may be fixed to an outer surface of the first sidewall 620, specifically, to an edge of the opening 621, by a screw. In this manner, after the entire lock releasing device is assembled, the release action can be triggered by operating the lock trigger mechanism 400 from the outside. Further, since the fixing portion 410 can be externally mounted to the connection housing 600, the assembly of the entire lock releasing device can be facilitated. Two lock triggering mechanisms 400 may be respectively installed on the opposite first sidewalls 620, and the opposite installed two telescopic parts 420 are extended and retracted in opposite directions, so that the radial locking part 300 can be more stably locked or released. However, the present application is not limited thereto, and the two opposite second sidewalls 630 of the coupling housing 600 may also be provided with the lock trigger mechanisms 400, respectively, so that the radial lock portions 300 can be locked and released from four directions.
Preferably, the connection housing 600 is integrally formed, i.e., the top wall 610, the first side wall 620 and the second side wall 630 are integrally formed, so that, on the one hand, the axial dimension of the connection housing 600 can be reduced, and on the other hand, the side walls (e.g., the first side wall 620 and the second side wall 630) for mounting the lock trigger mechanism 400 can also be allowed to be formed to have a relatively thick thickness.
Specifically, the first sidewall 620 may have a thickened portion in which the opening 621 is formed, and the thickened portion may protrude outward with respect to a portion of the first sidewall 620 other than the thickened portion. Preferably, as shown in fig. 2, an end surface of the telescopic part 420 is located in the opening 621 in the retracted state of the telescopic part 420.
Further, although the connection housing 600 is illustrated to have a substantially hexahedral form in the embodiment, it is not limited thereto and the connection housing 600 may be formed in a cylindrical shape.
In addition, the lock release device may further include a bottom cover 640 that detachably covers the completely opened side of the connection housing 600, for example, the bottom cover 640 may be connected to the connection housing 600 by a fastener 641 such as a screw or the like. An inner surface of the bottom cover 640 facing the receiving space of the coupling case 600 may be formed as a recess portion in which the second release driving mechanism 800, which will be described below, may be received to be held at a predetermined position by the recess portion.
The first release driving mechanism 700 provides the first connecting body 100 with a first acting force in the axial direction of the plurality of petals in the direction in which the first connecting body 100 is away from the plurality of petals.
As an example, as shown in fig. 1 and 2, the first release driving mechanism 700 may be a compression spring, which may be sleeved on the connecting rod 110 of the first connecting body 100 and pressed against the flange portion 120. When the plurality of petals of the second connecting body 200 are separated to release the locking of the first connecting body 100, the first release driving mechanism 700 provides a first force to drive the first connecting body 100 to move away from the second connecting body 200, so that the first connecting body 100 can be rapidly separated from the second connecting body 200.
In addition, the lock release device according to the embodiment of the present application may further include a stopper 910. The stopper 910 is disposed in a direction of the first acting force with respect to the first connection body 100 to catch the first connection body 100 in the direction of the first acting force in the released state of the lock releasing device.
Specifically, the stopper 910 and the connection base 900 enclose a connection body receiving space in which the first connection body 100 and the first release driving mechanism 700 are disposed, and the connection base 900 may be formed with a through hole through which the first connection body 100 can be exposed to the outside of the connection body receiving space. For example, as shown in fig. 1 and 2, the stopper 910 may be formed in the form of a sleeve, one end of which may be connected to the connection base 900, and the other end of which may be formed with an operation opening to allow the first connection body 100 inside the sleeve to be operated through the operation opening 911, for example, when the first connection body 100 is a bolt or a screw, the first connection body 100 may be screwed through the operation opening 911.
In addition, the lock release device may further include a pre-tightening limiting member 920, and the pre-tightening limiting member 920 may be used to limit a pre-tightening position of the first connecting body 100 when the first connecting body 100 is assembled. In the embodiment shown in fig. 1 and 2, when the first connection body 100 is assembled, the first connection body 100 can be screwed through the operation opening 911 to screw the first connection body 100 into the second connection body 200 which is already in the clasped state, so that the first connection body 100 is tightly connected with the second connection body 200. In this process, the preload limiter 920 between the connection base 900 and the flange portion 120 of the first connection body 100 can prevent the first connection body 100 from being excessively screwed into the second connection body 200 to cause the first connection body 100 to collide with the second release driving mechanism 800 located at the other side of the second connection body 200.
The lock release device according to the present application may be used for mechanical separation of two devices, and particularly, as described above, the connection base 900 may be disposed to face the top wall 610 of the connection housing 600, the first connection body 100, the connection base 900, and the stopper 910 may constitute a separation portion, the second connection body 200, the connection housing 600, and other members received or mounted in the connection housing 600 may constitute a fixing portion, one of the two devices may be connected to the separation portion 10, and particularly, to the connection base 900, and the other of the two devices may be connected to the fixing portion 20, and particularly, to the connection housing 600, and in an initial state, the separation portion 10 and the fixing portion 20 may be connected to each other through the locking connection of the first connection body 100 and the second connection body 200 to connect the two devices to each other. When it is required to separate the two devices, the locking of the second connection body 200 to the first connection body 100 can be released, thereby allowing the separation portion 10 and the fixing portion 20 to be separated.
In a satellite application scenario, the solar wing, the antenna, the load and other mechanisms on the satellite may be connected to the connection base 900, the connection housing 600 may be installed on the satellite main body, and when the solar wing, the antenna, the load and other mechanisms need to be launched, the connection between the solar wing, the antenna, the load and other mechanisms and the satellite main body may be unlocked by releasing the locking and releasing device.
The second release actuator 800 may provide a radially outward force to the plurality of petals. For example, second release drive mechanism 800 may include drive portion 810 and support portion 820. The plurality of petals may be supported on the support portion 820, and the driving portion 810 may be installed on a side of the support portion 820 opposite to the plurality of petals and may be capable of providing a second force to the support portion 820 in the same direction as the first force. The driving portion 810 may be formed as a compression spring, but is not limited thereto, and may be formed as an electrostrictive mechanism, a hydraulic telescopic mechanism, or the like, for example, as long as it can provide a jacking force to the support portion 820 and the plurality of petals.
The plurality of petals may be supported axially between the top wall 610 and the bearing portion 820, as shown in fig. 1 and 2, a first end of the plurality of petals may be supported on the bearing portion 820, and a second end of the plurality of petals opposite the first end may be supported on the top wall 610.
Similarly, the end surfaces of the second ends of the plurality of flaps may be formed to be inclined with respect to the radial direction of the flaps, and the end surface of the first end is inclined in the opposite direction to the end surface of the second end. Accordingly, the top wall 610 may include an inclined surface portion 613 supporting the second ends of the plurality of petals, the inclined surface portion 613 having an inclined surface cooperating with an end surface of the second end in an opposite direction to that of the bearing surface 821. Here, "opposite" means that the extending direction of the end surface is inclined toward the opposite direction in the axial direction with respect to the radial direction.
In the lock release device according to the embodiment of the present application, in the locked state, two lock triggering mechanisms 400 are respectively fixed to both symmetrical ends of the connection housing 600, the fixing portions 410 are respectively in contact with the radial lock portions 300, and the radial lock portions 300 are in a balanced state by the force of the axial lock driving mechanism 500 and the force of the fixing portions 410. The supporting portion 820 is contacted with the second connection body 200 by the driving portion 810. In this state, the second connection body 200 is received by the contact force of the top wall 610 (specifically, the inclined surface portion 613) of the connection housing 600, and the inclined end surfaces of both ends of the second connection body 200 are brought into contact with the inclined surfaces of the support portion 820 and the top wall 610, respectively. The second connection body 200 has a tendency to move radially under the action of the support portion 820 and the top wall 610, and the second connection body 200 cannot move radially under the limit of the radial locking portion 300, so that the first connection body 100 and the second connection body 200 are fixed. The second connection body 200 has a tendency to move upward and radially while being fixed to the first connection body 100. Therefore, the second connection body 200 is in a locked state.
During the release process, when the lock trigger mechanism 400 is operated, the bellows 420 performs a contraction motion, when the telescopic part 420 is separated from the radial locking part 300, the radial locking part 300 is moved downward by the axial locking driving mechanism 500, when the inner surface of the radial locking part 300 moves downward along the outer surface of the second connecting body 200, since the second connecting body 200 has a tendency to move in a radial direction, which is always in a contact state with the radial locking part 300, when the lower surface of the second connecting body 200 is acted by the upper jacking force of the bearing part 820, which moves along the slopes of the support portion 820 and the top wall 610, the plurality of petals (e.g., the first petal 210 and the second petal 220) move radially outward, which is separated from the first coupling body 100, the first coupling body 100 is rapidly separated from the device by the external pulling force, so that the separating portion 10 is in a separated state, completing the unlocking release function. The first linkage 100 is moved upward by the first release driving mechanism 700 and holds itself in the stopper 910 without flying out arbitrarily, and in particular, in the case where the present lock releasing device is applied to the separation of the satellite main body from the separation mechanism, space debris is not generated.
In a satellite application scene, the dynamic requirements of the release of small loads which are required more at present are more and more strict, and a locking and releasing device with low impact unlocking and low energy consumption is required. However, existing pyrotechnic devices are limited in their use in environments where the microsatellite or the installation accessory has a sensitive stand-alone unit and present a certain risk of impact. In addition, the hot knife of the initiating explosive device is made of heating materials, the heating time is long, the energy storage time is long, and the application of the hot knife is limited due to the limited pretightening force.
According to the locking release device, low-impact unlocking can be achieved, and the locking release device can be used repeatedly.
According to the locking and releasing device, the radial locking part capable of moving in the axial direction and the locking and triggering mechanism capable of moving in the radial direction are matched, so that the problem that releasing impact in the initiating explosive device is large can be solved, and the device can be repeatedly used.
In addition, according to the locking release device of this application, provide along the effort of axial direction on the direction that a plurality of lamella bodies are kept away from to first connector through setting up first release actuating mechanism, can make first connector take out in the second connector rapidly to realize quick separation.
Further, according to the lock releasing device of the present application, by providing the stopper, the first link body drawn out of the second link body can be abutted to prevent the first link body from flying out along an unintended trajectory after being separated from the second link body.
Further, according to the lock releasing device of the present application, by disposing the fixing portion of the lock trigger mechanism outside the connection housing, it is possible to facilitate the operation of the lock trigger mechanism to trigger the releasing action of the lock releasing device.
Further, according to the lock releasing device of the present application, by accommodating the axial lock driving mechanism in the accommodating space surrounded by the stopper projection, the radial lock portion, and the side wall of the connecting housing, the axial dimension of the lock releasing device can be reduced, and miniaturization of the lock releasing device is achieved.
Further, according to the lock releasing device of the present application, by forming the guide passage on the radial lock portion, the movement of the lock trigger mechanism is guided, and the movement of the lock trigger mechanism in the plane perpendicular to the axial direction of the second connecting body is restricted.
Further, according to the lock releasing device of the present application, both end surfaces of the plurality of petals are formed as inclined surfaces to be slidable along the inclined surfaces, thereby releasing the first connecting body.
The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all changes that can be made in the details of the description and drawings, or directly/indirectly implemented in other related technical fields, are intended to be embraced therein without departing from the spirit of the present application.
Claims (10)
1. A lock release device, comprising a first connector, a second connector, a radial lock, and a lock trigger mechanism, the second connector comprising a plurality of petals,
the first link body is locked between the plurality of flap bodies by the plurality of flap bodies in a locked state of the lock release device, the plurality of flap bodies release the lock of the first link body in a released state of the lock release device,
the radial lock portion is movable in an axial direction of the second connecting body to release the movement of the plurality of petals in a radial direction of the second connecting body,
the lock trigger mechanism is movable in the radial direction toward the second connecting body to lock the movement of the radial lock portion in the axial direction, and movable in the radial direction away from the second connecting body to release the movement of the radial lock portion in the axial direction.
2. The lock release device of claim 1 further comprising a first release drive mechanism providing a first force to the first linkage in the axial direction in a direction in which the first linkage is distal from the plurality of petals.
3. The lock release device according to claim 2, characterized in that the lock release device further comprises a stopper portion provided in the direction of the first acting force with respect to the first connecting body to abut against the first connecting body in the direction of the first acting force in the released state of the lock release device.
4. The lock release device according to claim 3, further comprising a connection base, wherein the stopper portion and the connection base enclose a connection body accommodation space, wherein the first connection body and the first release driving mechanism are disposed in the connection body accommodation space, and wherein a through hole is formed in the connection base, through which the first connection body can be exposed to the outside of the accommodation space.
5. The lock release device according to claim 1, further comprising a connection housing, the second connection body and the radial lock portion being disposed inside the connection housing, an opening being formed on a side wall of the connection housing,
the locking trigger mechanism comprises a fixed part and a telescopic part which can be telescopic in the radial direction of the second connecting body relative to the fixed part, the fixed part is fixed outside the side wall of the connecting shell, the telescopic part can extend into the connecting shell through the opening,
wherein an end surface of a free end of the telescopic part is recessed with respect to an inner side surface of the side wall in a retracted state of the telescopic part.
6. The lock release device according to claim 5, wherein the second connecting body includes a large diameter portion and a small diameter portion, the lock release device further includes an axial lock drive mechanism that applies a force of movement toward the small diameter portion in the axial direction to the radial lock portion, the radial lock portion being fitted over the large diameter portion in a locked state of the lock release device,
and a limiting bulge is formed on the top wall of the connecting shell, the limiting bulge protrudes from the inner side surface of the top wall to the inner space of the connecting shell, and under the locking state of the locking and releasing device, an accommodating space for accommodating the axial locking driving mechanism is enclosed among the limiting bulge, the radial locking part and the side wall of the connecting shell.
7. The lock release device according to claim 1, wherein a guide passage in which the lock trigger mechanism is located in a state of locking the radial lock portion is formed on the radial lock portion, the guide passage restricting movement of the lock trigger mechanism in a plane perpendicular to an axial direction of the second connecting body.
8. The lock release device of claim 1, further comprising a second release drive mechanism that provides a radially outward force to the plurality of petals,
wherein the second release drive mechanism has a bearing surface that is in contact with the plurality of petals and is inclined with respect to a radial direction,
the second release drive mechanism includes a stopper portion provided radially outside the support surface so as to be capable of abutting against the plurality of petals in a locked state of the lock release device.
9. The lock release device of claim 1, wherein the radial lock portion includes a lock body and a messenger portion having an axial dimension smaller than an axial dimension of the lock body.
10. The lock release device of claim 9, wherein the radial dimension of the messenger is less than the radial dimension of the lock body and greater than half the radial dimension of the lock body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110689228.6A CN113212799B (en) | 2021-06-22 | 2021-06-22 | Lock release device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689228.6A CN113212799B (en) | 2021-06-22 | 2021-06-22 | Lock release device |
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| CN113212799A true CN113212799A (en) | 2021-08-06 |
| CN113212799B CN113212799B (en) | 2022-06-10 |
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| CN113895660A (en) * | 2021-09-28 | 2022-01-07 | 北京微纳星空科技有限公司 | Split type locking and releasing device |
| CN114261535A (en) * | 2021-12-06 | 2022-04-01 | 北京微纳星空科技有限公司 | Extrusion device and cube star deployer |
| CN114560108A (en) * | 2022-01-26 | 2022-05-31 | 南京师范大学泰州学院 | Electromagnetic disengaging device |
| WO2023226792A1 (en) * | 2022-05-26 | 2023-11-30 | 苏州悦肤达医疗科技有限公司 | Pick-and-place apparatus and mechanical device |
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| CN113212799B (en) | 2022-06-10 |
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