CN114001589A - Locking device - Google Patents
Locking device Download PDFInfo
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- CN114001589A CN114001589A CN202111271667.1A CN202111271667A CN114001589A CN 114001589 A CN114001589 A CN 114001589A CN 202111271667 A CN202111271667 A CN 202111271667A CN 114001589 A CN114001589 A CN 114001589A
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- pull rod
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- rod
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- 230000005540 biological transmission Effects 0.000 claims abstract description 73
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims abstract 2
- 238000000429 assembly Methods 0.000 claims abstract 2
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims 7
- 238000007906 compression Methods 0.000 claims 7
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 17
- 230000000875 corresponding effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F3/00—Rocket or torpedo launchers
- F41F3/04—Rocket or torpedo launchers for rockets
- F41F3/052—Means for securing the rocket in the launching apparatus
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Abstract
The invention relates to a locking device which comprises a base, a screw rod, a transmission nut and a transmission pull rod, wherein the base is of an inverted barrel-shaped structure, a plurality of limiting grooves are uniformly arranged on the peripheral wall of the upper half part of the base at intervals, the limiting grooves are communicated with an inner cavity of the base, locking assemblies are hinged in the limiting grooves, the screw rod is rotatably arranged on the inner top wall of the base along the axis direction of the base, the transmission nut is rotatably arranged on the screw rod, the number of the transmission pull rods corresponds to that of the limiting grooves, one end of the transmission pull rod is hinged with the side wall of the transmission nut, and the other end of the transmission pull rod extends to the corresponding limiting groove and is hinged in the middle of the corresponding locking assembly. The invention has simple structure, high operation accuracy and reliable locking, and is suitable for matching various devices with supporting foot forms.
Description
Technical Field
The invention relates to the technical field of mechanical structures, in particular to a locking device.
Background
Some devices are generally provided with support members in the form of support feet at their lower portions, and in particular cases for securing the device, the purpose of securing the device is generally achieved by securing the support members. The above situation also exists in the technical field of launch of the launch vehicle, and the existing active rocket needs multiple manual operations after being filled, so that operators have certain danger. Once a failure occurs during rocket launching, the launch pad is required to complete state recovery first. Meanwhile, in order to ensure the stability and safety of the rocket body in bearing and transferring under the environmental wind load, the supporting point of the rocket body (such as a long conquer No. two F carrier rocket, the total length of which is 58.34 meters, the quality is 493 tons, 4 supporting points at the bottom are distributed at the tail end of the rocket, and the diameter is 3.35 meters) needs to be locked with a launching platform. The existing rocket fulcrum locking device adopts a pull rod type and a pressure rod type, and the two locking modes both need manual operation and have certain potential safety hazards.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a locking device which has simple structure, high operation accuracy and reliable locking and is suitable for being matched with various equipment in a supporting foot form.
In order to solve the problems in the prior art, the invention provides a locking device which comprises a base, a screw rod, a transmission nut and a transmission pull rod, wherein the base is of an inverted barrel-shaped structure, a plurality of limiting grooves are uniformly arranged on the outer peripheral wall of the upper half part of the base at intervals and are communicated with an inner cavity of the base, a locking assembly is hinged in each limiting groove, the screw rod is rotatably arranged on the inner top wall of the base along the axis direction of the base, the transmission nut is rotatably arranged on the screw rod, the number of the transmission pull rods corresponds to the number of the limiting grooves, one end of each transmission pull rod is hinged with the side wall of the transmission nut, and the other end of each transmission pull rod extends to the corresponding limiting groove and is hinged in the middle of the corresponding locking assembly.
Furthermore, the locking device comprises a locking assembly, wherein the locking assembly comprises an active pull rod, a follow-up pull rod and a pressing block, the active pull rod and the follow-up pull rod are arranged in parallel relatively, the lower ends of the active pull rod and the follow-up pull rod are hinged with the lower half part of the inner groove wall of the limiting groove, the hinged positions of the active pull rod and the follow-up pull rod with the lower half part of the inner groove wall of the limiting groove are spaced in the vertical direction, the upper ends of the active pull rod and the follow-up pull rod are hinged with the lower half part of the pressing block, the upper half part of the pressing block extends towards the axis direction of the base, so that the active pull rod, the follow-up pull rod and the pressing block form a parallelogram hinged structure, and the transmission pull rod is hinged in the middle of the active pull rod or the follow-up pull rod.
Furthermore, the locking device of the present invention is characterized in that the limiting groove is a rectangular groove, the limiting groove has two opposite inner groove walls, each of the inner groove walls is hinged with a driving pull rod and a follower pull rod, the driving pull rod hinged on one inner groove wall of the limiting groove is opposite to the driving pull rod hinged on the other inner groove wall of the limiting groove, the follower pull rod hinged on one inner groove wall of the limiting groove is opposite to the follower pull rod hinged on the other inner groove wall of the limiting groove, the transmission pull rod is hinged between the opposite side walls of the two driving pull rods or the opposite side walls of the two follower pull rods, the upper ends of the two driving pull rods are respectively hinged on the two opposite outer side walls of the pressing block, and the upper ends of the two follower pull rods are respectively hinged on the two opposite outer side walls of the pressing block.
Furthermore, the shape of the driving pull rod and the shape of the follow-up pull rod are both cuboid, when the pressing block is in a locking state, the opposite side walls of the driving pull rod and the follow-up pull rod are tightly propped, and when the pressing block is in an unlocking state, a gap is reserved between the opposite side walls of the driving pull rod and the follow-up pull rod.
Further, the locking device is characterized in that an assembly hole is formed in the inner top wall of the base, a deep groove ball bearing is installed in the assembly hole, the outer ring of the deep groove ball bearing is connected with the assembly hole in an interference fit mode, the inner ring of the deep groove ball bearing is connected with the upper end of the screw rod in an interference fit mode, a stop ring is installed at the lower end of the deep groove ball bearing, when the transmission nut is located on the lower half portion of the screw rod, the pressing block is in a locking state, and the driving pull rod and the follow-up pull rod are in a vertical state; when the transmission nut is propped against the lower end face of the stop ring, the pressing block is in an unlocked state.
Furthermore, the locking device is characterized in that a reinforcing support plate which is integrally formed with the base is arranged at the upper end of the base, the reinforcing support plate is cylindrical, the reinforcing support plate is used for pressing a support piece to be locked onto the reinforcing support plate through a pressing block, and the cross section area of the reinforcing support plate is larger than the contact area of the support piece and the reinforcing support plate.
Furthermore, the locking device is provided with three limiting grooves, the three limiting grooves are formed by cutting from the upper end face of the reinforcing support plate to the middle of the base along the vertical direction, a blocking surface is formed on the reinforcing support plate and the base after cutting, and when the driving pull rod and the follow-up pull rod are in a vertical state, the side wall of the driving pull rod is tightly propped against the blocking surface.
Furthermore, the locking device comprises a pressing block, wherein the pressing block comprises a hinge part and a pressing part, the hinge part and the pressing part are integrally formed, an included angle between the hinge part and the inner side surface of the pressing part is an obtuse angle, and the lower end surface of the pressing part is parallel to the upper end surface of the base when the pressing part is in a locking state.
Furthermore, the outer side wall of the transmission nut is uniformly fixed with hinged parts at intervals along the circumferential direction, the number of the hinged parts is the same as that of the transmission pull rods, the hinged parts are two ear plates which are oppositely arranged, and the transmission pull rods are hinged between the two ear plates.
Furthermore, the lower end of the screw rod extends out of the inner cavity of the base, the extending part of the screw rod is connected with a motor through a coupler, and the motor is connected with a controller.
Compared with the prior art, the locking device has the following advantages: when the locking device is used practically, the object to be locked needs to be placed on the upper end face of the base, the transmission nut reciprocates up and down on the screw rod, and the locking and unlocking actions of the locking assembly are completed under the action of the transmission pull rod. When the transmission nut is positioned at the uppermost part of the screw rod, the locking assembly rotates by taking a hinge point of the limiting groove as a shaft under the action of outward pushing of the transmission pull rod, the upper end of the locking assembly is gradually far away from the base, and the whole device is in an unlocking state at the moment; when locking operation is required, the transmission nut gradually moves downwards along the screw rod, the transmission pull rod gradually contracts towards the inner cavity of the base under the pulling action of the transmission nut, the locking assembly rotates by taking a hinge point of the limiting groove as a shaft under the inward pulling action of the transmission pull rod, the upper end of the locking assembly is gradually close to the base, an object located on the base is locked on the base, and the device is integrally in a locking state at the moment. Each part action is executed according to established strategy and is operated the accuracy higher, and simple structure is reliable and stable, and it is more reliable that locking subassembly is in structure dead point locking after the locking.
Drawings
FIG. 1 is a schematic top view of a locking device according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a locking device of the present invention during assembly of a screw, a drive nut and a drive rod;
FIG. 4 is a schematic view of a locking state of a locking device of the present invention;
FIG. 5 is a schematic view of an unlocked state of a locking device of the present invention;
fig. 6 is a schematic view of an offset locking state of a locking device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and more obvious, the present invention is further described below with reference to the accompanying drawings and the detailed description. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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 invention.
As shown in fig. 1-2, according to a specific embodiment of the locking device of the present invention, a base 1, a screw rod 2, a transmission nut 3 and a transmission pull rod 4 are provided, the base 1 is configured as an inverted barrel-shaped structure, a plurality of limiting grooves 11 are uniformly arranged on the outer peripheral wall of the upper half portion of the base 1 at intervals, the limiting grooves 11 are communicated with an inner cavity of the base 1, a locking component 5 is hinged in the limiting grooves 11, the screw rod 2 is rotatably installed on the inner top wall of the base 1 along the axial direction of the base 1, the transmission nut 3 is rotatably installed on the screw rod 2, the number of the transmission pull rods 4 corresponds to the number of the limiting grooves 11, one end of each transmission pull rod 4 is hinged to the side wall of the transmission nut 3, and the other end of each transmission pull rod 4 extends to the corresponding limiting groove 11 and is hinged to the middle portion of the corresponding locking component 5. In practical use, the object to be locked needs to be placed on the upper end face of the base 1, the transmission nut 3 reciprocates up and down on the screw rod 2, and the locking and unlocking actions of the locking assembly 5 are completed under the action of the transmission pull rod 4. When the transmission nut 3 is positioned at the uppermost part of the screw rod 2, the locking component 5 rotates by taking a hinge point of the limiting groove 11 as a shaft under the action of outward pushing of the transmission pull rod 4, the upper end of the locking component 5 is gradually far away from the base 1, and the whole device is in an unlocking state at the moment; when locking operation is required, the transmission nut 3 gradually moves downwards along the screw rod 2, the transmission pull rod 4 gradually contracts towards the inner cavity of the base 1 under the pulling action of the transmission nut 3, the locking component 5 rotates by taking the hinge point of the limiting groove 11 as a shaft under the inward pulling action of the transmission pull rod 4, the upper end of the locking component 5 is gradually close to the base 1, an object located on the base 1 is locked on the base 1, and the whole device is in a locking state at the moment. All parts act to execute the operation according to the established strategy, the accuracy is higher, the structure is simple, stable and reliable, and the locking assembly is positioned at the structure dead point after locking, so that the locking is more reliable.
As shown in fig. 2, on the basis of the above-mentioned embodiment, the locking assembly 5 specifically includes a driving pull rod 51, a follower pull rod 52 and a pressing block 53. In order to ensure the stability of the whole structure, the driving pull rod 51 and the follow-up pull rod 52 are arranged in parallel relatively, the lower ends of the driving pull rod 51 and the follow-up pull rod 52 are hinged with the lower half part of the inner groove wall of the limit groove 11, the hinged positions of the driving pull rod 51 and the follow-up pull rod 52 with the lower half part of the inner groove wall of the limit groove 11 have a distance in the up-down direction, the upper ends of the driving pull rod 51 and the follow-up pull rod 52 are hinged with the lower half part of the pressing block 53, so that the driving pull rod 51, the follow-up pull rod 52 and the pressing block 53 form a parallelogram hinged structure which can rotate in a certain angle range around two hinged points at the lower ends of the driving pull rod 51 and the follow-up pull rod 52, in order to ensure the locking reliability, the upper half part of the pressing block 53 extends towards the axial direction of the base 1, and the lengths of the driving pull rod 51 and the follow-up pull rod 52 are the same, and the upper ends of the active pull rod 51 and the follow-up pull rod 52 are higher than the upper surface of the base 1, when in locking, the object to be locked is locked between the pressing block 53 and the base 1, the longer the length of the upper half part of the pressing block 53 extends, the larger the contact area with the object to be locked is, and the better the locking performance is. Because the action principle of the driving pull rod 51 is the same as that of the follow-up pull rod 52, the transmission pull rod 4 can be hinged on the middle part of the driving pull rod 51 or the follow-up pull rod 52 to complete corresponding actions. In this embodiment, by providing the above parallelogram hinge structure, the driving pull rod 51 and the follower pull rod 52 can be in a vertical state in the locking state, when the object to be locked is unbalanced, an upward pulling force is generated, the direction of the pulling force is parallel to the directions of the driving pull rod 51 and the follower pull rod 52, and the stress state of the parallelogram hinge structure is just at the dead point position, so that the parallelogram hinge structure cannot rotate, and the object to be locked can be effectively locked.
As shown in fig. 2 and 4, in order to further secure the structural stability, and the locking stability, the spacing groove 11 may be designed as a rectangular groove, as shown in fig. 4, it can be seen that the spacing groove 11 has two opposite inner groove walls, an active pull rod 51 and a follow-up pull rod 52 are hinged on each inner groove wall, the active pull rod 51 hinged on one inner groove wall of the limiting groove 11 is opposite to the active pull rod 51 hinged on the other inner groove wall of the limiting groove 11, the follow-up pull rod 52 hinged on one inner groove wall of the limiting groove 11 is opposite to the follow-up pull rod 52 hinged on the other inner groove wall of the limiting groove 11, the transmission pull rod 4 is hinged between the opposite side walls of the two active pull rods 51 or the opposite side walls of the two follow-up pull rods 52, the upper ends of the two active pull rods 51 are respectively hinged on the two opposite outer side walls of the pressing block 53, and the upper ends of the two follow-up pull rods 52 are respectively hinged on the two opposite outer side walls of the pressing block 53. And the final transmission pull rod 4 and the pressing block 53 are both hinged between the two groups of driving pull rods 51 and the two groups of follow-up pull rods 52, so that the structure is firmer and the stress is more stable.
As shown in fig. 4 and 5, the active tie rod 51 and the follower tie rod 52 are both rectangular, so that the active tie rod 51 and the follower tie rod 52 have a certain width, and for the active tie rod 51 and the follower tie rod 52 hinged on the same inner groove wall of the limit groove 11, when the pressing block 53 is in an unlocking state, a gap exists between the opposite side walls of the active tie rod 51 and the follower tie rod 52, so as to ensure that the active tie rod 51 and the follower tie rod 52 can rotate within a specified angle; when the pressing block 53 is in a locking state, the side wall of the driving pull rod 51 opposite to the follow-up pull rod 52 is just pressed tightly, so that when the side wall of the driving pull rod 51 opposite to the follow-up pull rod 52 is pressed tightly (namely, when the locking action is completed), the driving pull rod 51 plays a role in blocking the follow-up pull rod 52, and therefore the driving pull rod 51 and the follow-up pull rod 52 are prevented from excessively moving after rotating in place, and the stability of the overall action of the device is ensured.
As shown in fig. 2, fig. 2 shows a specific rotation mounting manner of the screw 2 and the base 1, which is specifically as follows: the inner top wall of the base 1 is provided with an assembling hole 12, a deep groove ball bearing 13 is arranged in the assembling hole 12, the outer ring of the deep groove ball bearing 13 is connected with the assembling hole 12 in an interference fit mode, the inner ring of the deep groove ball bearing 13 is connected with the upper end of the screw rod 2 in an interference fit mode, therefore, the screw rod 2 is rotatably arranged on the inner top wall of the base 1, in order to ensure that the deep groove ball bearing 13 moves, the lower end of the deep groove ball bearing 13 is provided with a stop ring 14, and when the transmission nut 3 is positioned at the lower half part of the screw rod 2, the pressing block 53 is in a locking state, and the driving pull rod 51 and the follow-up pull rod 52 are in a vertical state; when the transmission nut 3 is supported on the lower end face of the stop ring 14, the pressing block 53 is in an unlocking state, the stop ring 14 can play a role in stopping in place, the deep groove ball bearing 13 can be protected on the lower side, and the service life of the deep groove ball bearing 13 is prolonged.
As shown in fig. 2, in order to enhance the structural stability of the base 1 and enable the base 1 to bear larger load, a reinforcing support plate 15 integrally formed with the base 1 may be disposed at the upper end of the base 1, the reinforcing support plate 15 is designed to be cylindrical and further adapted to the upper end surface of the base 1, the reinforcing support plate 15 is used for pressing the support member 6 to be locked onto the reinforcing support plate 15 through a pressing block 53, and the cross-sectional area of the reinforcing support plate 15 is larger than the contact area of the support member 6 and the reinforcing support plate 15. Through the above design, when the situation shown in fig. 6 occurs (that is, when the object to be locked has a certain range of deviation, it can be understood that a large rocket such as a launch vehicle has a large mass, and the four supporting members under the rocket body are relatively small, so that a certain deviation may exist between the rocket body and the center position of the base after the rocket body is erected, and if the deviation is adjusted, time and labor are wasted), the locking device can still effectively and reliably lock the object to be locked, so as to solve the problem that the position of the large and heavy object cannot be easily adjusted for many times.
As shown in fig. 2 and 5, in this embodiment, three limiting grooves 11 are specifically provided, an included angle between axes of two adjacent limiting grooves 11 is 120 °, the three limiting grooves 11 are formed by cutting from an upper end surface of the reinforcing support plate 15 to a middle portion of the base 1 in an up-and-down direction, a blocking surface 16 is formed on the reinforcing support plate 15 and the base 1 after cutting, and when the driving pull rod 51 and the follower pull rod 52 are in a vertical state, a side wall of the driving pull rod 51 is tightly pressed against the blocking surface 16. Therefore, the blocking surface 16 can limit the action of the active pull rod 51 and the follow-up pull rod 52 when being locked in place, and further prevent the excessive action of the active pull rod 51 and the follow-up pull rod 52. As a further improvement, the pressing block 53 specifically includes a hinge portion 531 and a pressing portion 532, in order to ensure the overall strength of the pressing block 53, the hinge portion 531 and the pressing portion 532 are integrally formed, an included angle between inner side surfaces of the hinge portion 531 and the pressing portion 532 is an obtuse angle, and when the pressing portion 532 is in the locking state, a lower end surface of the pressing portion 532 is parallel to an upper end surface of the base 1. Thus, after the locking device is locked in place, the contact area between the pressing part 532 and the object to be locked is increased, and the locking effect is further improved.
As shown in fig. 3, in order to ensure the stability of the connection structure between the transmission pull rod 4 and the transmission nut 3, the outer side wall of the transmission nut 3 may be fixed with hinge pieces 31 at uniform intervals along the circumferential direction, and the number of the hinge pieces 31 is the same as that of the transmission pull rod 4. More specifically, the hinge 31 may be designed as two oppositely disposed lugs, between which the drive link 4 is hinged.
In order to implement the function of automatic locking and unlocking by unattended operation, improve the automation level of the system, and implement fine control of the whole system, the present embodiment further includes a controller, and of course, a skilled person in the art can understand that the controller may adopt a dsp (digital Signal processing) digital Signal processor, an FPGA (Field-Programmable Gate Array) Field-Programmable Gate Array, an mcu (microcontroller unit) system board, an soc (system on a chip) system board, or a plc (Programmable Logic controller) minimum system including I/O. The automatic control operation of the device can be realized by presetting control logic. The lower end of the screw rod 2 extends out of the inner cavity of the base 1, the extending part of the screw rod 2 is connected with a motor through a coupler, and the motor is connected with a controller.
Taking the supporting member arranged under the rocket body as an example for explanation, the specific action process is as follows:
during locking, after the supporting piece 6 is stably erected at the center of the circular supporting surface at the upper part of the base 1, the locking device is in an unlocking state at the moment, the controller controls the input of the coupler of the motor to rotate, the screw rod 2 is driven to rotate in the forward direction, the transmission nut 3 matched with the screw transmission moves downwards along a straight line, and the transmission nut 3 drives the driving pull rod 51 to rotate around a hinge point fixed on the side wall of the base 1 and towards the direction close to the supporting piece 6 through the transmission pull rod 4. The rotation of the driving pull rod 51 drives the follow-up pull rod 52 and the pressing block 53 to move together towards the direction close to the support 6, and when the pressing block 53 is in contact with the upper surface of the circular truncated cone of the support 6, the driving pull rod 51 and the follow-up pull rod 52 are in a vertical state and are parallel to the screw rod 2. And as the output power of the motor is increased, the control end receives a signal and stops the rotation input of the motor coupler. At this point, the three pressing blocks 53 act together on the upper surface of the circular truncated cone of the support member 6, and the device is in a locked state, as shown in fig. 4.
And when the lock is unlocked, the controller controls the input rotation of the coupler of the motor to drive the screw rod 2 to rotate reversely, the transmission nut 3 matched with the screw transmission moves upwards along a straight line, and the transmission nut 3 drives the driving pull rod 51 to rotate around the hinge point fixed on the side wall of the base 1 and towards the direction away from the support piece 6 through the transmission pull rod 4. The rotation of the driving pull rod 51 drives the follow-up pull rod 52 and the pressing block 53 to move together in the direction away from the support 6, and at the moment, the pressing block 53 is separated from contact with the upper surface of the circular truncated cone of the support 6. When the drive nut 3 moves up against the stop ring 14, the components stop moving. At this time, the clamp block 53 is located below the bottom surface of the support 6 in the horizontal height direction, completely freeing the rocket body takeoff space, i.e., unlocking in place, as shown in fig. 5.
When the supporting piece 6 has deviation, the control execution in the locking process is carried out, the motion transmission is consistent with the first step, the perimeter of the circular supporting surface at the upper part of the base 1 is larger than the perimeter of the circular table of the supporting piece 6, so that the locking device is suitable for fulcrum deviation in a certain range, and the maximum deviation is the radius difference between the fulcrum deviation and the support. Within this range, reliable locking of the fulcrum can be satisfied, as shown in fig. 6.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The above embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the scope of the invention as claimed, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the invention defined by the claims without departing from the spirit of the present invention.
Claims (10)
1. A locking device is characterized by comprising a base (1), a screw rod (2), a transmission nut (3) and a transmission pull rod (4), the base (1) is of an inverted barrel-shaped structure, a plurality of limiting grooves (11) are uniformly arranged on the peripheral wall of the upper half part of the base (1) at intervals, the limiting groove (11) is communicated with the inner cavity of the base (1), a locking component (5) is hinged in the limiting groove (11), the screw rod (2) is rotatably arranged on the inner top wall of the base (1) along the axial direction of the base (1), the transmission nut (3) is screwed on the screw rod (2), the number of the transmission pull rods (4) corresponds to the number of the limiting grooves (11), one ends of the transmission pull rods (4) are hinged to the side wall of the transmission nut (3), and the other ends of the transmission pull rods (4) extend to the corresponding limiting grooves (11) and are hinged to the middle of the corresponding locking assemblies (5).
2. A locking device according to claim 1, wherein the locking assembly (5) comprises an active pull rod (51), a follow-up pull rod (52) and a compression block (53), the active pull rod (51) and the follow-up pull rod (52) are arranged in parallel, the lower ends of the active pull rod (51) and the follow-up pull rod (52) are hinged with the lower half part of the inner groove wall of the spacing groove (11), the hinged positions of the active pull rod (51) and the follow-up pull rod (52) and the lower half part of the inner groove wall of the spacing groove (11) have a distance in the up-down direction, the upper ends of the active pull rod (51) and the follow-up pull rod (52) are hinged with the lower half part of the compression block (53), so that the active pull rod (51), the follow-up pull rod (52) and the compression block (53) form a parallelogram hinge structure, and the upper half part of the compression block (53) extends towards the axial direction of the base (1), the transmission pull rod (4) is hinged to the middle of the driving pull rod (51) or the follow-up pull rod (52).
3. A locking device according to claim 2, wherein the retaining groove (11) is a rectangular groove, the retaining groove (11) has two opposing inner groove walls, each of the inner groove walls is hinged with a driving tie rod (51) and a follower tie rod (52), the driving tie rod (51) hinged on one inner groove wall of the retaining groove (11) is arranged opposite to the driving tie rod (51) hinged on the other inner groove wall of the retaining groove (11), the follower tie rod (52) hinged on one inner groove wall of the retaining groove (11) is arranged opposite to the follower tie rod (52) hinged on the other inner groove wall of the retaining groove (11), the transmission tie rod (4) is hinged between the opposing side walls of the two driving tie rods (51) or the opposing side walls of the two follower tie rods (52), the upper ends of the two driving tie rods (51) are respectively hinged on the opposing outer side walls of the pressing block (53), the upper ends of the two follow-up pull rods (52) are respectively hinged to two opposite outer side walls of the pressing block (53).
4. A locking device according to claim 3, wherein the active pull rod (51) and the follow-up pull rod (52) are both rectangular in shape, the side walls of the active pull rod (51) opposite to the follow-up pull rod (52) are tightly pressed when the compression block (53) is in the locking state, and the side walls of the active pull rod (51) opposite to the follow-up pull rod (52) are provided with gaps when the compression block (53) is in the unlocking state.
5. A locking device according to claim 4, characterized in that the inner top wall of the base (1) is provided with an assembly hole (12), the assembly hole (12) is internally provided with a deep groove ball bearing (13), the outer ring of the deep groove ball bearing (13) is connected with the assembly hole (12) in an interference fit manner, the inner ring of the deep groove ball bearing (13) is connected with the upper end of the screw rod (2) in an interference fit manner, the lower end of the deep groove ball bearing (13) is provided with a stop ring (14), when the transmission nut (3) is positioned at the lower half part of the screw rod (2), the compression block (53) is in a locking state, and the driving pull rod (51) and the follow-up pull rod (52) are in a vertical state; when the transmission nut (3) is pressed against the lower end face of the stop ring (14), the pressing block (53) is in an unlocked state.
6. A locking device according to claim 5, characterized in that the upper end of the base (1) is provided with a reinforcing support plate (15) which is integrally formed with the base (1), the reinforcing support plate (15) is cylindrical, the reinforcing support plate (15) is used for pressing the support member (6) to be locked on the reinforcing support plate (15) through a pressing block (53), and the cross-sectional area of the reinforcing support plate (15) is larger than the contact area of the support member (6) and the reinforcing support plate (15).
7. A locking device according to claim 6, characterized in that the number of the limiting grooves (11) is three, the three limiting grooves (11) are formed by cutting from the upper end surface of the reinforcing support plate (15) to the middle part of the base (1) along the up-down direction, a blocking surface (16) is formed on the reinforcing support plate (15) and the base (1) after cutting, and when the driving pull rod (51) and the follow-up pull rod (52) are in the vertical state, the side wall of the driving pull rod (51) is tightly pressed against the blocking surface (16).
8. A locking device according to claim 1, wherein the pressing block (53) comprises a hinge portion (531) and a pressing portion (532), the hinge portion (531) and the pressing portion (532) are integrally formed, an included angle between the hinge portion (531) and the inner side surface of the pressing portion (532) is an obtuse angle, and the lower end surface of the pressing portion (532) is parallel to the upper end surface of the base (1) when the pressing portion (532) is in the locking state.
9. Locking device according to claim 1, characterized in that the outer side wall of the drive nut (3) is fixed with hinge elements (31) at circumferentially uniform intervals, the number of the hinge elements (31) is the same as the number of the drive tie rods (4), the hinge elements (31) are two oppositely arranged lugs, and the drive tie rods (4) are hinged between the two lugs.
10. A locking device according to claim 1, characterized in that the lower end of the screw (2) extends out of the inner cavity of the base (1), and the extended part of the screw (2) is connected with a motor through a coupling, and the motor is connected with a controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271667.1A CN114001589B (en) | 2021-10-29 | 2021-10-29 | Locking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111271667.1A CN114001589B (en) | 2021-10-29 | 2021-10-29 | Locking device |
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| CN114001589B CN114001589B (en) | 2023-11-28 |
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| CN115217925A (en) * | 2022-08-01 | 2022-10-21 | 北京航天发射技术研究所 | Mechanical locking device with self-locking function |
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| CN114001589B (en) | 2023-11-28 |
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