CN114001589B - Locking device - Google Patents
Locking device Download PDFInfo
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- CN114001589B CN114001589B CN202111271667.1A CN202111271667A CN114001589B CN 114001589 B CN114001589 B CN 114001589B CN 202111271667 A CN202111271667 A CN 202111271667A CN 114001589 B CN114001589 B CN 114001589B
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- pull rod
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- transmission
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- 230000005540 biological transmission Effects 0.000 claims abstract description 76
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 33
- 238000007906 compression Methods 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 description 16
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 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
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Clamps And Clips (AREA)
Abstract
The invention relates to a locking device which comprises a base, a screw rod, a transmission nut and transmission pull rods, wherein the base is of an inverted barrel-shaped structure, a plurality of limit grooves are uniformly formed in the peripheral wall of the upper half part of the base at intervals, the limit grooves are communicated with an inner cavity of the base, locking components are hinged in the limit 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 the number of the limit grooves, one end of each transmission pull rod is hinged with the side wall of each transmission nut, and the other end of each transmission pull rod extends to the corresponding limit groove and is hinged in the middle of the corresponding locking component. The invention has simple structure, high operation accuracy and reliable locking, and is suitable for being matched with various devices with supporting legs.
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 a support member in the form of a support foot at the lower part thereof, and in order to fix the device in a specific case, the purpose of fixing the device is generally achieved by fixing the support member. The situation also exists in the technical field of launch of carrier rockets, the current active rocket needs a plurality of manual operations after being filled, and operators have a certain danger. Once a fault occurs during rocket launching, the launching pad is required to complete state recovery first. Meanwhile, in order to ensure the stability and safety of the rocket body in carrying and transferring under the load of environmental wind, a rocket body fulcrum (for example, a carrier rocket of the second sign F, the total length of which is 58.34 meters, the mass of which is up to 493 tons, and 4 support points at the bottom of which are distributed at the tail end of the rocket and the diameter of which is 3.35 meters) is required to be locked with a launching platform. The existing rocket fulcrum locking device adopts a pull rod type and a compression rod type, both locking modes need manual operation, and certain potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art, and provides the locking device which has the advantages of simple structure, high operation accuracy and reliable locking and is suitable for being matched with various devices with supporting legs.
In order to solve the problems in the prior art, the locking device provided by the invention 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 limit grooves are uniformly arranged on the peripheral wall of the upper half part of the base at intervals, the limit grooves are communicated with an inner cavity of the base, a locking assembly is hinged in the limit 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 the number of the limit 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 limit groove and is hinged in the middle of the corresponding locking assembly.
Further, the locking device comprises a driving pull rod, a follow-up pull rod and a compression block, wherein the driving pull rod and the follow-up pull rod are relatively arranged in parallel, the lower ends of the driving 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 space is reserved between the hinged positions of the driving pull rod and the follow-up pull rod and the lower half part of the inner groove wall of the limiting groove in the vertical direction, the upper ends of the driving pull rod and the follow-up pull rod are hinged with the lower half part of the compression block, the upper half part of the compression block extends towards the axis direction of the base, so that the driving pull rod, the follow-up pull rod and the compression block form a parallelogram hinged structure, and the transmission pull rod is hinged at the middle part of the driving pull rod or the follow-up pull rod.
Further, the locking device is characterized in that the limiting groove is a rectangular groove, the limiting groove is provided with two opposite inner groove walls, each inner groove wall is hinged with a driving pull rod and a follow-up 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 follow-up pull rod hinged on one inner groove wall of the limiting groove is opposite to the follow-up pull rod hinged on the other inner groove wall of the limiting groove, the transmission pull rod is hinged between opposite side walls of the two driving pull rods or opposite side walls of the two follow-up pull rods, the upper ends of the two driving pull rods are hinged on two opposite outer side walls of the pressing block respectively, and the upper ends of the two follow-up pull rods are hinged on two opposite outer side walls of the pressing block respectively.
Furthermore, the locking device is characterized in that the driving pull rod and the follow-up pull rod are cuboid, the side walls of the driving pull rod opposite to the follow-up pull rod are tightly propped when the compression block is in a locking state, and gaps exist on the side walls of the driving pull rod opposite to the follow-up pull rod when the compression block is in an unlocking state.
Further, an assembly hole is formed in the inner top wall of the base, a deep groove ball bearing is installed in the assembly hole, an outer ring of the deep groove ball bearing is in interference fit connection with the assembly hole, an inner ring of the deep groove ball bearing is in interference fit connection with the upper end of the screw rod, a stop ring is installed at the lower end of the deep groove ball bearing, and when the transmission nut is located at the lower half part of the screw rod, the compression block is located in a locking state, and the driving pull rod and the follow-up pull rod are located in a vertical state; when the transmission nut is propped against the lower end face of the stop ring, the compression block is in an unlocking state.
Furthermore, the upper end of the base is provided with the reinforcing support plate integrally formed with the base, the reinforcing support plate is cylindrical, the reinforcing support plate is used for pressing a support piece to be locked on the reinforcing support plate through the 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, according to the locking device disclosed by the invention, three limit grooves are formed, the three limit grooves are formed by cutting from the upper end surface of the reinforcing support plate to the middle part of the base along the up-down 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 provided by the invention comprises the hinge part and the pressing part, wherein the hinge part and the pressing part are integrally formed, the included angle between the hinge part and the inner side surface of the pressing part is an obtuse angle, and when the pressing part is in a locking state, the lower end surface of the pressing part is parallel to the upper end surface of the base.
Furthermore, according to the locking device disclosed by the invention, the outer side wall of the transmission nut is uniformly fixed with the hinge parts at intervals along the circumferential direction, the number of the hinge parts is the same as that of the transmission pull rods, the hinge parts are two oppositely arranged lug plates, and the transmission pull rods are hinged between the two lug plates.
Further, according to the locking device disclosed by the invention, 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 the motor through the coupler, and the motor is connected with the controller.
Compared with the prior art, the locking device has the following advantages: when in actual use, the object to be locked is required to be placed on the upper end surface 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 component rotates by taking the hinge point of the limiting groove as an axis under the action of the outward pushing of the transmission pull rod, the upper end of the locking component is gradually far away from the base, and the whole device is in an unlocking state; when the locking operation is needed, the transmission nut moves downwards gradually along the screw rod, the transmission pull rod can shrink towards the inner cavity of the base gradually under the pulling action of the transmission nut, the locking component rotates by taking the hinge point of the limiting groove as the shaft under the action of the inward pulling of the transmission pull rod, the upper end of the locking component is close to the base gradually, then an object located on the base is locked on the base, and the whole device is in a locking state. The operation accuracy of each part action is higher according to the established strategy, the structure is simple, the locking assembly is stable and reliable, and the locking of the structure dead point after locking is more reliable.
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 view of the structure of the locking device of the present invention when the screw, the drive nut and the drive rod are assembled;
FIG. 4 is a schematic view showing a locking state of a locking device according to the present invention;
FIG. 5 is a schematic view of an unlocked state of a locking device according to the present invention;
fig. 6 is a schematic view showing an offset locking state of a locking device according to the present invention.
Detailed Description
The present invention will be further described with reference to the drawings and the detailed description below, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-2, in a specific embodiment of a locking device of the present invention, a base 1 is provided with an inverted barrel structure by arranging a base 1, a screw rod 2, a transmission nut 3 and a transmission pull rod 4, a plurality of limit grooves 11 are uniformly spaced on the outer peripheral wall of the upper half part of the base 1, the limit grooves 11 are communicated with the inner cavity of the base 1, a locking component 5 is hinged in the limit grooves 11, the screw rod 2 is rotatably mounted on the inner top wall of the base 1 along the axis direction of the base 1, the transmission nut 3 is rotatably mounted on the screw rod 2, the number of the transmission pull rods 4 corresponds to the number of the limit grooves 11, one end of the transmission pull rod 4 is hinged with the side wall of the transmission nut 3, and the other end of the transmission pull rod 4 extends to the corresponding limit groove 11 and is hinged in the middle of the corresponding locking component 5. When in actual use, an 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 assembly 5 rotates by taking the hinge point of the limiting groove 11 as an axis under the action of the outward pushing of the transmission pull rod 4, the upper end of the locking assembly 5 is gradually far away from the base 1, and the whole device is in an unlocking state; when the locking operation is needed, 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 assembly 5 rotates by taking the hinge point of the limiting groove 11 as an axis under the action of inward pulling of the transmission pull rod 4, the upper end of the locking assembly 5 gradually approaches the base 1, and then 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 the component actions are operated according to a given strategy, the accuracy is higher, the structure is simple, the locking assembly is stable and reliable, the locking assembly is positioned at a structure dead point after locking, and the locking is more reliable.
As shown in fig. 2, the locking assembly 5 specifically includes a driving drawbar 51, a follower drawbar 52, and a pressing block 53 on the basis of the above embodiment. 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 to the lower half part of the inner groove wall of the limit groove 11, the hinge positions of the driving pull rod 51 and the follow-up pull rod 52 and the lower half part of the inner groove wall of the limit groove 11 are spaced in the vertical direction, the upper ends of the driving pull rod 51 and the follow-up pull rod 52 are hinged to the lower half part of the compressing block 53, so that the driving pull rod 51, the follow-up pull rod 52 and the compressing block 53 form a parallelogram hinge structure, the parallelogram hinge structure can rotate around two hinge points of the driving pull rod 51 and the lower end of the follow-up pull rod 52 in a certain angle range, in order to ensure the reliability of locking, the upper half parts of the compressing block 53 extend towards the axis direction of the base 1, the lengths of the driving pull rod 51 and the follow-up pull rod 52 are the same, the upper ends of the driving pull rod 51 and the follow-up pull rod 52 are higher than the upper surface of the base 1, when in locking, the locking object is locked with the upper half part of the base 53 is better in contact with the locking area, and the locking area is better. Because the action principles of the driving pull rod 51 and the follow-up pull rod 52 are the same, the transmission pull rod 4 can be hinged at the middle part of the driving pull rod 51 or the follow-up pull rod 52, and the corresponding actions can be completed. In this embodiment, by setting the above parallelogram hinge structure, the driving pull rod 51 and the following pull rod 52 can be in a vertical state in the locked state, when the locked object is unbalanced loaded, 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 following pull rod 52, and the stress state of the parallelogram hinge structure is exactly at the dead point position, so that the parallelogram hinge structure can not rotate, and the locked object can be effectively locked.
As shown in fig. 2 and 4, in order to further ensure the stability of the structure and the locking stability, the limiting groove 11 may be designed as a rectangular groove, as shown in fig. 4, it may be seen that the limiting groove 11 has two opposite inner groove walls, on each inner groove wall, one driving pull rod 51 and one follower pull rod 52 are hinged, and the driving pull rod 51 hinged on one inner groove wall of the limiting groove 11 is opposite to the driving pull rod 51 hinged on the other inner groove wall of the limiting groove 11, the follower pull rod 52 hinged on one inner groove wall of the limiting groove 11 is opposite to the follower pull rod 52 hinged on the other inner groove wall of the limiting groove 11, the driving pull rod 4 is hinged between opposite side walls of the two driving pull rods 51 or opposite side walls of the two follower pull rods 52, the upper ends of the two driving pull rods 51 are respectively hinged on two opposite outer side walls of the pressing block 53, and the upper ends of the two follower pull rods 52 are respectively hinged on two opposite outer side walls of the pressing block 53. The final transmission pull rod 4 and the compression block 53 are hinged between the two groups of driving pull rods 51 and the follow-up pull rods 52, so that the structure is firmer and the stress is more stable.
As shown in fig. 4 and fig. 5, the shapes of the driving pull rod 51 and the follow-up pull rod 52 are cuboid, so that the driving pull rod 51 and the follow-up pull rod 52 have certain widths, and for the driving pull rod 51 and the follow-up pull rod 52 hinged on the same inner groove wall of the limit groove 11, gaps exist on opposite side walls of the driving pull rod 51 and the follow-up pull rod 52 when the compression block 53 is in an unlocking state, so that the driving pull rod 51 and the follow-up pull rod 52 can rotate within a specified angle; when the compression block 53 is in a locking state, the opposite side walls of the driving pull rod 51 and the follow-up pull rod 52 are just tightly propped, so that when the opposite side walls of the driving pull rod 51 and the follow-up pull rod 52 are tightly propped (namely, when the locking action is completed), the driving pull rod 51 plays a blocking role on the follow-up pull rod 52, thereby ensuring that the driving pull rod 51 and the follow-up pull rod 52 do not move again after rotating in place, and ensuring the stability of the integral action of the device.
As shown in fig. 2, fig. 2 shows a specific rotation installation mode of the screw 2 and the base 1, which is specifically as follows: an assembly hole 12 is formed in the inner top wall of the base 1, a deep groove ball bearing 13 is arranged in the assembly hole 12, the outer ring of the deep groove ball bearing 13 is in interference fit connection with the assembly hole 12, the inner ring of the deep groove ball bearing 13 is in interference fit connection with the upper end of the screw rod 2, 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, a stop ring 14 is arranged at the lower end of the deep groove ball bearing 13, 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 propped against the lower end face of the stop ring 14, the compression block 53 is in an unlocking state, the stop ring 14 can play a role in blocking, the deep groove ball bearing 13 can be protected at 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 stability of the structure of the base 1, so that the base 1 can bear a larger load, a reinforcing support plate 15 integrally formed with the base 1 may be provided at the upper end of the base 1, and the reinforcing support plate 15 may be designed to be cylindrical, so as to be adapted to the upper end surface of the base 1, the reinforcing support plate 15 may be used for pressing the support member 6 to be locked onto the reinforcing support plate 15 through the pressing block 53, and the cross-sectional area of the reinforcing support plate 15 may be larger than the contact area of the support member 6 and the reinforcing support plate 15. Through the design, when the situation shown in fig. 6 occurs (namely, when the locked object has a certain range of deflection, it can be understood that the large rocket such as a carrier rocket has large mass, and four supporting pieces under the rocket body are relatively smaller, so that a certain deflection can exist between the rocket body and the central position of the base after the rocket body is erected, and if the adjustment is performed, time and labor are wasted), the locking device can still effectively and reliably lock the locked object, so that the problem that the position of the large heavy object cannot be easily adjusted for many times is solved.
As shown in fig. 2 and 5, in this embodiment, three limiting grooves 11 are specifically provided, the included angle between the axes of two adjacent limiting grooves 11 is 120 °, the three limiting grooves 11 are formed by cutting from the upper end surface of the reinforcing support plate 15 to the middle of the base 1 in 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 a vertical state, the side wall of the driving pull rod 51 is tightly propped against the blocking surface 16. The blocking surface 16 thus acts as a stop for the active and follower links 51, 52 when locked in place, thereby preventing excessive movement of the active and follower links 51, 52. As a further improvement, the compression block 53 specifically includes a hinge portion 531 and a compression portion 532, in order to ensure the overall strength of the compression block 53, the hinge portion 531 and the compression portion 532 are integrally formed, and an included angle between the hinge portion 531 and an inner side surface of the compression portion 532 is an obtuse angle, and when the compression portion 532 is in a locked state, a lower end surface of the compression portion 532 is parallel to an upper end surface of the base 1. After the locking is in place, the contact area between the pressing part 532 and the object to be locked is increased, and the locking effect is improved.
As shown in fig. 3, in order to ensure the stability of the connection structure between the transmission tie rods 4 and the transmission nuts 3, hinge members 31 may be uniformly fixed on the outer sidewall of the transmission nuts 3 at intervals in the circumferential direction, and the number of hinge members 31 is the same as the number of transmission tie rods 4. More specifically, the hinge 31 can be designed as two oppositely disposed lugs, between which the transmission tie 4 is hinged.
In order to realize the automatic locking and unlocking functions of the unattended operation, improve the automation level of the system and realize the fine control of the whole system, the embodiment also comprises a controller, and of course, those skilled in the art can understand that the controller can adopt a DSP (Digital Signal Processing) digital signal processor, an FPGA (Field-Programmable Gate Array) Field programmable gate array, a MCU (Microcontroller Unit) system board, a SoC (system on a chip) system board or a PLC (Programmable Logic Controller) minimum system comprising 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 a support piece arranged under a rocket body as an example for explanation, the specific action process is as follows:
(1) when the locking is performed, after the supporting piece 6 is vertically stabilized at the center of the circular supporting surface at the upper part of the base 1, the locking device is in an unlocking state, the controller controls the coupling input of the motor to rotate so as to drive the screw rod 2 to rotate positively, the transmission nut 3 matched with the screw transmission is moved downwards along a straight line, and the transmission nut 3 drives the driving pull rod 51 to rotate around the hinging 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 compression block 53 to move together in the direction approaching the supporting piece 6, and when the compression block 53 contacts with the upper surface of the round table of the supporting piece 6, the driving pull rod 51 and the follow-up pull rod 52 are in a vertical state and parallel to the screw rod 2. As the output power of the motor is increased, the control end receives the signal and stops the rotation input of the motor coupler. At this time, the three pressing blocks 53 act together on the upper surface of the circular truncated cone of the supporting member 6, and the device is in a locked state as shown in fig. 4.
(2) During unlocking, the controller controls the coupler input of the motor to rotate, drives the screw rod 2 to reversely rotate, the transmission nut 3 in spiral transmission fit 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 in a direction away from 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 compression block 53 to move together in a direction away from the supporting piece 6, and at this time, the compression block 53 is out of contact with the upper surface of the round table of the supporting piece 6. When the drive nut 3 moves up against the stop ring 14, the components stop moving. At this time, the clamping block 53 is located below the bottom surface of the support 6 in the horizontal height direction, and completely leaves the arrow take-off space, i.e., unlocks in place, as shown in fig. 5.
(3) When the support member 6 has offset, the control execution and the motion transmission in the locking process are consistent with those in (1), and the circumference of the circular support surface at the upper part of the base 1 is larger than that of the round table of the support member 6, so that the locking device can be suitable for a certain range of pivot offset, and the maximum offset is the difference of the radius of the two. Within this range, reliable locking of the fulcrum is satisfied, as shown in fig. 6.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to the terms "present embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means 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, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, in the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
The above embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solution of the present invention should fall within the scope of the present invention as defined in the claims.
Claims (7)
1. A locking device is characterized by comprising a base (1), a screw (2), a transmission nut (3) and a transmission pull rod (4), wherein the base (1) is of an inverted barrel-shaped structure, a plurality of limit grooves (11) are uniformly arranged on the peripheral wall of the upper half part of the base (1) at intervals, the limit grooves (11) are communicated with an inner cavity of the base (1), a locking assembly (5) is hinged in the limit grooves (11), the screw (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 rotatably arranged on the screw (2), the number of the transmission pull rods (4) corresponds to the number of the limit grooves (11), one end of each transmission pull rod (4) is hinged with the side wall of the transmission nut (3), the other end of each transmission pull rod (4) extends to the corresponding limit groove (11) and is hinged in the middle of the corresponding locking assembly (5), each locking assembly (5) comprises a driving pull rod (51), a follower pull rod (52) and a compression block (53), the driving pull rod (52) and a lower half pull rod (51) are hinged with the corresponding limit groove (51), the hinge positions of the driving pull rod (51) and the follow-up pull rod (52) and the lower half part of the inner groove wall of the limit groove (11) are spaced 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 compression block (53), so that the driving pull rod (51), the follow-up pull rod (52) and the compression block (53) form a parallelogram hinge structure, the driving pull rod (51) and the follow-up pull rod (52) are in a vertical state in a locking state, the upper half part of the compression block (53) extends towards the axial direction of the base (1), and the transmission pull rod (4) is hinged at the middle part of the driving pull rod (51) or the follow-up pull rod (52); the upper end of the base (1) is provided with a reinforcing support plate (15) integrally formed with the base (1), the reinforcing support plate (15) is cylindrical, the reinforcing support plate (15) is used for tightly pressing a support piece (6) to be locked on the reinforcing support plate (15) through a pressing block (53), and the cross section area of the reinforcing support plate (15) is larger than the contact area of the support piece (6) and the reinforcing support plate (15); the limiting grooves (11) are formed in three, the three limiting grooves (11) are formed by cutting from the upper end face of the reinforcing support plate (15) to the middle 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 a vertical state, the side wall of the driving pull rod (51) is tightly propped against the blocking surface (16).
2. A locking device according to claim 1, wherein the limit slot (11) is a rectangular slot, the limit slot (11) has two opposite inner slot walls, each inner slot wall is hinged with one active pull rod (51) and one follow-up pull rod (52), the active pull rod (51) hinged on one inner slot wall of the limit slot (11) is opposite to the active pull rod (51) hinged on the other inner slot wall of the limit slot (11), the follow-up pull rod (52) hinged on one inner slot wall of the limit slot (11) is opposite to the follow-up pull rod (52) hinged on the other inner slot wall of the limit slot (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 compression 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 compression block (53).
3. A locking device according to claim 2, characterized in that the active tie rod (51) and the follow-up tie rod (52) are rectangular, the active tie rod (51) is tightly pressed against the opposite side wall of the follow-up tie rod (52) when the compression block (53) is in the locked state, and a gap exists between the opposite side walls of the active tie rod (51) and the follow-up tie rod (52) when the compression block (53) is in the unlocked state.
4. A locking device according to claim 3, characterized in that an assembly hole (12) is formed in the inner top wall of the base (1), a deep groove ball bearing (13) is installed in the assembly hole (12), the outer ring of the deep groove ball bearing (13) is in interference fit connection with the assembly hole (12), the inner ring of the deep groove ball bearing (13) is in interference fit connection with the upper end of the screw (2), a stop ring (14) is installed at the lower end of the deep groove ball bearing (13), when the transmission nut (3) is positioned at the lower half part of the screw (2), a pressing block (53) is positioned in a locking state, and an active pull rod (51) and a follow-up pull rod (52) are positioned in a vertical state; when the transmission nut (3) is propped against the lower end face of the stop ring (14), the pressing block (53) is in an unlocking state.
5. A locking device according to claim 1, characterized in that the pressing block (53) comprises a hinge part (531) and a pressing part (532), the hinge part (531) and the pressing part (532) are integrally formed, the included angle between the hinge part (531) and the inner side surface of the pressing part (532) is an obtuse angle, and when the pressing part (532) is in a locked state, the lower end surface of the pressing part (532) is parallel to the upper end surface of the base (1).
6. A locking device according to claim 1, characterized in that hinge elements (31) are fixed on the outer side wall of the transmission nut (3) at regular intervals along the circumferential direction, the number of the hinge elements (31) is the same as the number of the transmission pull rods (4), the hinge elements (31) are two oppositely arranged lug plates, and the transmission pull rods (4) are hinged between the two lug plates.
7. A locking device according to claim 1, characterized in that the lower end of the screw (2) protrudes from the inner cavity of the base (1), the protruding part of the screw (2) is connected with a motor through a coupling, and the motor is connected with a controller.
Priority Applications (1)
| 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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| CN114001589A CN114001589A (en) | 2022-02-01 |
| CN114001589B true CN114001589B (en) | 2023-11-28 |
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| CN202111271667.1A Active CN114001589B (en) | 2021-10-29 | 2021-10-29 | Locking device |
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| CN115217925B (en) * | 2022-08-01 | 2024-04-05 | 北京航天发射技术研究所 | Mechanical locking device with self-locking function |
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| FI121686B (en) * | 2008-01-31 | 2011-02-28 | Patria Weapon Systems Oy | Arrangement to support a grenade in a pipe of a rear-loaded weapon |
| CN104690739A (en) * | 2013-12-06 | 2015-06-10 | 中国科学院沈阳自动化研究所 | Clamping mechanism of underwater hydraulic manipulator |
| CN205784866U (en) * | 2016-06-28 | 2016-12-07 | 贵州航天天马机电科技有限公司 | A kind of carrier rocket plays vertical frame rear end locking device |
| CN111043906B (en) * | 2019-11-08 | 2021-04-16 | 蓝箭航天空间科技股份有限公司 | Rocket foot supporting and pressing device for rocket and rocket launching platform |
| CN211682195U (en) * | 2019-12-25 | 2020-10-16 | 湖北三峡职业技术学院 | Mechanical gripper based on thread transmission |
| CN111055301A (en) * | 2020-01-13 | 2020-04-24 | 浙江理工大学 | Double-drive multi-knuckle bionic gripper |
| CN112171684B (en) * | 2020-09-10 | 2024-04-09 | 广东工业大学 | Rod piece holder |
| CN111964528A (en) * | 2020-09-23 | 2020-11-20 | 梁伟基 | Claw type launcher for launching water rocket and launching method thereof |
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