A mechanical delayed unlocking device

Abstract

The invention discloses a mechanical delayed unlocking device, which relates to the locking field of a certain type of missile head protection cover, and specifically to a mechanical delayed unlocking device, comprising a delayed unlocking mechanism and an instantaneous force unloading unlocking mechanism, wherein one end of the delayed unlocking mechanism is connected to one end of the instantaneous force unloading unlocking mechanism through a left hoop, and the other end of the instantaneous force unloading unlocking mechanism is connected to the other end of the delayed unlocking mechanism through a right hoop, and the delayed unlocking mechanism, the left hoop, the instantaneous force unloading unlocking mechanism and the right hoop form an annular locking device; the delayed unlocking mechanism comprises a seat body assembly and an unlocking assembly, and the delayed unlocking device is arranged on the seat body assembly; the invention belongs to a pure mechanical structure, is easy to produce, has economical cost, and has strong environmental adaptability, utilizes the delayed unlocking mechanism and the instantaneous force unloading unlocking mechanism to realize instantaneous unlocking of the annular locking device, and the delayed unlocking mechanism adopts a time control gear train with a certain transmission ratio, and the time control is stable.

Description

Technical Field

[0001] The invention relates to the locking field of a certain type of missile head protection cover, and in particular to a delayed unlocking device. Background Art

[0002] At present, when the missile is not separated from the launch box at the initial stage of operation, a large amount of smoke is generated and gathered in the launch box, which pollutes the camera screen at the head of the missile and causes unclear images. Therefore, it is necessary to design a protective cover to protect the camera screen at the head of the missile, but it is required to protect it in the launch box, and release the locking force at the radially symmetrical positions at the same time after leaving the box for a certain period of time, and the protective cover will automatically fall off without the clamping force. Summary of the invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a purely mechanical delayed unlocking device that is not affected by the use environment. When the device is not triggered, the circumference of the protective cover is tightened. After being triggered, after a certain delay, the device releases the force along the unlocking path, and the protective cover automatically falls off without being affected by external forces.

[0004] The present invention discloses a mechanical delayed unlocking device, comprising a delayed unlocking mechanism and an instantaneous force unloading unlocking mechanism, wherein one end of the delayed unlocking mechanism is connected to one end of the instantaneous force unloading unlocking mechanism via a left hoop, and the other end of the instantaneous force unloading unlocking mechanism is connected to the other end of the delayed unlocking mechanism via a right hoop, and the delayed unlocking mechanism, the left hoop, the instantaneous force unloading unlocking mechanism and the right hoop form an annular locking device;

[0005] The delayed unlocking mechanism comprises a seat assembly and an unlocking assembly, the seat assembly is provided with a delayed unlocking device, and the delayed unlocking device comprises a movement time control assembly for delaying and a trigger assembly for unlocking;

[0006] The trigger assembly is connected to the unlocking assembly through the movement timing assembly, and the movement timing assembly is limitedly connected to the seat assembly through the trigger assembly;

[0007] When the trigger component is activated, the limit on the movement timing component is released, the movement timing component moves, the unlocking component is driven to unlock, the delayed unlocking mechanism releases the connected left and right straps, and at the same time the instantaneous unloading unlocking mechanism releases the connected left and right straps.

[0008] Preferably, the movement timing assembly comprises an input gear and an output gear, wherein the input gear is connected to the output gear via an intermediate gear;

[0009] The output gear is connected with an unlocking and releasing mechanism, the middle part of which is rotatably connected with the seat assembly, one end of the unlocking and releasing mechanism is a fan-shaped connecting head, and the other end is provided with a locking head;

[0010] The peripheral surface of the connector is provided with teeth, and the teeth on the connector are meshed with the output gear;

[0011] The locking head is connected to the unlocking assembly limit position, and when the output gear rotates, the connecting head rotates accordingly, and the locking head extends or retracts to limit or release the unlocking assembly;

[0012] The input gear is connected with a damper, which is arranged on the base assembly. The end of the connector close to the locking head is connected with a driving block, which is connected to the seat assembly through a driving spring. The trigger assembly is connected to the damper limiter.

[0013] When the trigger assembly is disengaged from the damper and the limit on the movement timing assembly is released, the driving spring extends and resets, and the driving spring pushes the connector to delay reset under the action of the movement timing assembly and the damper.

[0014] Preferably, the trigger assembly includes a guide sleeve, a trigger pin is arranged in the guide sleeve, a trigger limit hole matching and corresponding to the trigger pin is arranged on the damper, one end of the trigger pin extends into the trigger limit hole, a trigger pin ball head is arranged on the other end, a trigger boss is arranged in the middle of the trigger pin, and a trigger spring is sleeved on the trigger pin between the trigger boss and the trigger limit hole;

[0015] One end of the guide sleeve is fixedly connected to the seat assembly, and the other end is fixedly connected to a stop cap that prevents the trigger pin from popping out of the guide sleeve;

[0016] When the trigger spring pushes the trigger pin up from the trigger limit hole, the damper moves along with the input gear.

[0017] Preferably, the damper includes a balancing pendulum and a riding wheel, the balancing pendulum is meshed with the riding wheel, the riding wheel is meshed with the input gear, the trigger limit hole is provided in plurality, and the trigger limit holes are all provided on the riding wheel, and the central axes of the trigger limit holes are all located on the same circle, and the center of the circle is located on the rotation axis of the riding wheel.

[0018] Preferably, the unlocking assembly includes a baffle, a starting plate, and a rotating frame, and a locking platform is provided on one side surface of the seat assembly, and the locking platform is fixedly connected to the seat assembly;

[0019] The rotating frame is fixedly arranged on the seat body assembly, and the rotating frame is connected to one end of the starting plate through a rotating shaft. The other end of the starting plate extends to the side of the seat body assembly where the locking platform is arranged, and is rotatably connected to the baffle plate through the starting rotating shaft. The baffle plate is located directly above the locking platform, and a locking device for locking the left and right straps is arranged on the side of the baffle plate facing the locking platform. One end of the left and right straps connected to the delayed unlocking mechanism is arranged between the locking device and the locking platform.

[0020] The rotation axis of the rotating shaft is arranged perpendicular to the rotation axis of the baffle;

[0021] A spring is provided on one side of the start plate facing the seat assembly, one end of the spring is connected to the start plate, and the other end is connected to the seat assembly;

[0022] When the locking head retracts, the baffle is released, the spring is reset to bounce the start plate, the baffle moves away from the locking platform and rotates around the axis of the start shaft, and the locking device releases the limit on the left and right straps.

[0023] Preferably, the locking device comprises a locking cone head fixedly connected to the baffle, a locking hole is arranged at a position of the locking platform corresponding to the locking cone head, and one end of the left and right straps connected to the delayed unlocking mechanism is arranged in the area between the locking cone head and the locking hole;

[0024] When the locking cone head partially enters the locking hole, the locking cone head squeezes and locks the left and right straps; when the locking cone head moves away from the locking hole, the locking cone head releases the left and right straps.

[0025] Preferably, two delayed unlocking devices are provided on the seat body assembly, the two delayed unlocking devices are arranged in parallel, and the locking heads on the two delayed unlocking devices are respectively connected to the two ends of the baffle. When the locking head extends out of the seat body assembly, the locking head is located directly above the baffle, limiting the baffle from moving away from the locking platform.

[0026] Preferably, the instantaneous force unloading unlocking mechanism comprises a shell, a central through hole is provided on the shell, and end covers are fixedly connected to the two ends of the shell, respectively, a left end cover and a right end cover, and the area between the left end cover and the right end cover in the shell is a sliding area, a slider is slidably provided in the sliding area, and through holes communicating with the sliding area are provided on the two end covers;

[0027] One end of the slider is connected to the left end cover through a spring, and the other end is provided with two corresponding spring plates, one of the left and right bands is connected to the two spring plates, and the other band extends from the through hole of the left end cover into the spring and is fixedly connected to the slider;

[0028] When the spring is reset and extended, the slide block is pushed to move, and the two spring sheets are extended from the shell body, and the band connected with the spring sheets is separated from the spring sheets.

[0029] Preferably, one of the two spring sheets is provided with a locking pin facing the other spring sheet, and the other spring sheet is provided with a locking hole at a position corresponding to the locking pin;

[0030] A through hole is arranged on the hoop connected to the spring sheet, and the locking nail is arranged in the locking hole after passing through the through hole.

[0031] Or preferably, it further comprises a pre-tightening assembly, the pre-tightening assembly comprises a pre-tightening screw, both ends of the pre-tightening screw are provided with external threads with opposite rotation directions, one section of the external threads is connected to a forward rotation nut, and the other section of the external threads is connected to a reverse rotation nut;

[0032] The left or right hoop is configured into two sections, namely a first section hoop and a second section hoop, one end of the first section hoop is connected to the instantaneous force unloading unlocking mechanism, and the other end is connected to the reverse rotation nut, one end of the second section hoop is connected to the forward rotation nut, and the other end is connected to the delayed unlocking mechanism.

[0033] The present invention is a purely mechanical structure, which is easy to produce, economical in cost, and has strong environmental adaptability. The instantaneous unlocking of the annular locking device is achieved by using a delayed unlocking mechanism and an instantaneous force unloading unlocking mechanism. The delayed unlocking mechanism adopts a time-controlled gear train with a certain transmission ratio, and the time control is stable.

[0034] The delayed unlocking part of the present invention adopts a dual redundant design, and the entire device adopts a radially symmetrical two-point simultaneous unlocking and unloading method, which improves the reliability of the product's instantaneous unlocking and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is the overall assembly diagram of the present invention in an unlocked state;

[0036] Figure 2 It is a schematic diagram of the movement time control component of the present invention;

[0037] Figure 3 This is a schematic diagram of the instantaneous force-releasing unlocking mechanism of the present invention after unlocking;

[0038] Figure 4 It is a schematic diagram of the unlocking component of the present invention;

[0039] Figure 5 A schematic diagram of an application of the present invention;

[0040] The numbers in the figure represent: 1-locking device, 2-delayed unlocking mechanism, 3-instantaneous force unloading unlocking mechanism, 4-preload assembly, 5-movement timing assembly, 6-seat assembly, 7-trigger assembly, 8-unlocking assembly, 9-output gear, 10-riding wheel, 11-locking head, 12-guide sleeve, 13-stop cap, 14-trigger pull pin, 15-trigger spring, 16-rotating frame, 17-balance pendulum, 18-rotating shaft , 19-starting plate, 20-reed, 22-baffle, 23-locking cone head, 24-input gear, 25-housing, 26-left end cover, 27-right end cover, 28-spring, 29-locking nail, 30-slider, 31-spring, 32-locking hole, 33-left hoop, 34-right hoop, 35-forward rotation nut, 36-reverse rotation nut, 37-pre-tightening screw, 38-protective cover, 39-launching tube. DETAILED DESCRIPTION

[0041] The present invention provides a mechanical delayed unlocking device, comprising a delayed unlocking mechanism 2 and an instantaneous force unloading unlocking mechanism 3, wherein one end of the delayed unlocking mechanism 2 is connected to one end of the instantaneous force unloading unlocking mechanism 3 via a left hoop 33, and the other end of the instantaneous force unloading unlocking mechanism 3 is connected to the other end of the delayed unlocking mechanism 2 via a right hoop 34, and the delayed unlocking mechanism 2, the left hoop 33, the instantaneous force unloading unlocking mechanism 3 and the right hoop 34 form an annular locking device 1;

[0042] The delayed unlocking mechanism 2 includes a seat assembly 6 and an unlocking assembly 8. The seat assembly 6 is provided with a delayed unlocking device, and the delayed unlocking device includes a movement time control assembly 5 for delaying and a trigger assembly 7 for unlocking;

[0043] The trigger assembly 7 is connected to the unlocking assembly 8 through the movement time control assembly 5, and the movement time control assembly 5 is limitedly connected to the seat assembly 6 through the trigger assembly 7;

[0044] When the trigger component 7 is actuated, the limit on the movement timing component 5 is released, the movement timing component 5 moves, driving the unlocking component 8 to unlock, the delayed unlocking mechanism 2 releases the connected left strap 33 and right strap 34, and at the same time the instantaneous unloading unlocking mechanism 3 releases the connected left strap 33 and right strap 34.

[0045] The movement timing assembly 5 includes an input gear 24 and an output gear 9, wherein the input gear 24 is connected to the output gear 9 via an intermediate gear;

[0046] The output gear 9 is connected with an unlocking and releasing mechanism, the middle part of which is rotatably connected with the seat assembly 6, one end of the unlocking and releasing mechanism is a fan-shaped connecting head, and the other end is provided with a locking head 11;

[0047] The peripheral surface of the connector is provided with teeth, and the teeth on the connector are meshed with the output gear 9;

[0048] The locking head 11 is connected to the unlocking assembly 8 in a limiting manner. When the output gear 9 rotates, the connecting head rotates accordingly, and the locking head 11 extends or retracts to limit or release the unlocking assembly 8;

[0049] The input gear 24 is connected to a damper, which is arranged on the base assembly. The end of the connector close to the locking head 11 is connected to a driving block, which is connected to the seat assembly 6 through a driving spring. The trigger assembly 7 is connected to the damper limiter.

[0050] When the trigger assembly 7 is disengaged from the damper and the limit on the movement timing assembly 5 is released, the driving spring stretches and resets, and the driving spring pushes the connector to delay reset under the action of the movement timing assembly 5 and the damper.

[0051] The trigger assembly 7 includes a guide sleeve 12, a trigger pin 14 is arranged in the guide sleeve 12, a trigger limit hole matching and corresponding to the trigger pin 14 is arranged on the damper, one end of the trigger pin 14 extends into the trigger limit hole, and the other end is provided with a ball head of the trigger pin 14, a trigger boss is arranged in the middle of the trigger pin 14, and a trigger spring 15 is sleeved on the trigger pin 14 between the trigger boss and the trigger limit hole;

[0052] One end of the guide sleeve 12 is fixedly connected to the seat assembly 6, and the other end is fixedly connected to a stop cap 13 that prevents the trigger pin 14 from popping out of the guide sleeve 12;

[0053] When the trigger spring 15 pushes the trigger pull pin 14 out of the trigger limit hole, the damper moves along with the input gear 24 .

[0054] The trigger assembly 7 includes a guide sleeve 12, one end of which is fixedly connected to the seat assembly 6, and the other end is fixedly connected to a stopper 13 for blocking the guide sleeve 12; in actual use, a limit plate is arranged on the trigger limit hole, the limit plate is fixedly connected to the base, and a through hole is arranged on the limit plate corresponding to the trigger limit hole, one end of the trigger spring 15 abuts against the limit plate, and the other end abuts against the trigger boss; a pop-up hole is arranged on the stopper 13 for the ball head of the trigger pull pin 14 to extend, and the diameter of the pop-up hole is smaller than the outer diameter of the trigger boss, and the trigger spring 15 is used to push the trigger pin 14 out of the trigger pin 14. To prevent the trigger pin 14 from flying out of the guide sleeve 12 after the trigger spring 15 lifts the trigger pin 14 from the trigger limit hole; during installation, the ball head of the trigger pin 14 is pressed into the guide sleeve 12, at which time the trigger spring 15 is in a compressed state, and then the trigger pin 14 is confined in the guide sleeve 12 by a process pin, and after being installed to the inner wall of the launch tube 39, the process pin is removed, and the ball head of the trigger pin 14 is abutted against the inner wall of the launch tube 39 under the action of the trigger spring 15, and at this time the trigger spring 15 is still in a compressed state.

[0055] The damper is an existing damper, including a balancing pendulum 17 and a riding wheel 10, the balancing pendulum 17 is meshed with the riding wheel 10, the riding wheel 10 is meshed with the input gear 24, the trigger limit hole is set in plurality, and the trigger limit holes are all set on the riding wheel 10, and the central axes of the trigger limit holes are all located on the same circle, and the center of the circle is located on the rotation axis of the riding wheel 10.

[0056] The unlocking assembly 8 includes a baffle 22, a start plate 19, and a rotating frame 16. A locking platform is provided on one side surface of the seat assembly 6, and the locking platform is fixedly connected to the seat assembly 6;

[0057] The rotating frame 16 is fixedly arranged on the seat assembly 6, and the rotating frame 16 is connected to one end of the starting plate 19 through the rotating shaft 18. The other end of the starting plate 19 extends to the side of the seat assembly 6 where the locking platform is arranged, and is rotatably connected to the baffle plate 22 through the starting rotating shaft 18. The baffle plate 22 is located directly above the locking platform, and a locking device for locking the left strap 33 and the right strap 34 is arranged on the side of the baffle plate 22 facing the locking platform. The ends of the left strap 33 and the right strap 34 connected to the delayed unlocking mechanism 2 are arranged between the locking device and the locking platform.

[0058] The rotation axis 18 line of the rotating shaft 18 is arranged perpendicular to the rotation axis 18 line of the baffle 22;

[0059] A spring 20 is provided on one side of the start plate 19 facing the seat assembly 6, one end of the spring 20 is connected to the start plate 19, and the other end is connected to the seat assembly 6;

[0060] When the locking head 11 retracts, the baffle 22 is released, the spring 20 is reset to bounce the start plate 19, the baffle 22 moves away from the locking platform and rotates around the axis of the start shaft 18, and the locking device releases the limit on the left and right straps 33 and 34.

[0061] The locking device includes a locking cone head 23 fixedly connected to the baffle 22, a locking hole is arranged at a position of the locking platform corresponding to the locking cone head 23, and one end of the left hoop 33 and the right hoop 34 connected to the delayed unlocking mechanism 2 is arranged in the area between the locking cone head 23 and the locking hole;

[0062] When the locking cone head 23 partially enters the locking hole, the locking cone head 23 squeezes and locks the left and right straps 33 and 34 . When the locking cone head 23 moves away from the locking hole, the locking cone head 23 releases the left and right straps 33 and 34 .

[0063] Two delayed unlocking devices are provided on the seat body assembly 6, and the two delayed unlocking devices are arranged in parallel, and the locking heads 11 on the two delayed unlocking devices are respectively connected to the two ends of the baffle 22. When the locking head 11 extends out of the seat body assembly 6, the locking head 11 is located directly above the baffle 22, limiting the baffle 22 from moving away from the locking platform.

[0064] The instantaneous force unloading unlocking mechanism 3 includes a housing 25, the housing 25 is provided with a central through hole, and the two ends of the housing 25 are respectively fixedly connected with end covers, namely a left end cover 26 and a right end cover 27, and the area between the left end cover 26 and the right end cover 27 in the housing 25 is a sliding area, and a slider 30 is slidably provided in the sliding area, and the two end covers are provided with through holes connected to the sliding area;

[0065] One end of the slider 30 is connected to the left end cover 26 via a spring 31, and the other end is provided with two corresponding spring plates 28. One of the left and right bands 33 and 34 is connected to the two spring plates 28, and the other band extends from the through hole of the left end cover 26 into the spring 31 and is fixedly connected to the slider 30. In actual use, it can be fixedly connected by screw connection.

[0066] When the spring 31 is reset and extended, the slider 30 is pushed to move, and the two spring sheets 28 are extended from the housing 25 , and then the band connected to the spring sheets 28 is separated from the spring sheets 28 .

[0067] One of the two spring pieces 28 is provided with a locking pin 29 facing the other spring piece 28 , and the other spring piece 28 is provided with a locking hole 32 at a position corresponding to the locking pin 29 ;

[0068] A through hole is provided on the hoop connected to the spring piece 28 , and the locking nail 29 is arranged in the locking hole 32 after passing through the through hole.

[0069] The pre-tightening assembly 4 includes a pre-tightening screw 37. Both ends of the pre-tightening screw 37 are provided with external threads with opposite rotation directions, one section of the external threads is connected to a forward rotation nut 35, and the other section of the external threads is connected to a reverse rotation nut 36;

[0070] The left strap 33 or the right strap 34 is configured to be in two sections, namely a first strap section and a second strap section. One end of the first strap section is connected to the instantaneous force unloading unlocking mechanism 3, and the other end is connected to the reverse rotation nut 36. One end of the second strap section is connected to the forward rotation nut 35, and the other end is connected to the delayed unlocking mechanism 2.

[0071] See attached Figure 5 As shown in the figure, a typical application example of the present invention is to install two halves of the protective cover 38 on the head of a certain type of missile, install the present invention in the groove on the circumferential surface of the protective cover 38, adjust the pre-tightening screw 37, so that the present invention can tighten the protective cover 38 along the circumference. Send the tightened shell into the appropriate position inside the launch tube 39, remove the tooling, release the trigger pin 14 in the trigger assembly 7, and at this time, the end of the trigger pin 14 contacts the inner wall of the launch tube 39, and the assembly is completed.

[0072] At the beginning of missile launch, a lot of smoke gathers in the launch tube 39. At this time, the camera screen is not affected by the protection of the protective cover 38. During missile launch, the trigger pin 14 pops up at the moment of leaving the inner wall of the launch tube 39, the delay function of the delayed unlocking mechanism 2 is turned on, the movement time control component 5 is turned on, and when the delay reaches the preset time, the unlocking component 8 is opened, and the hoop is unlocked to release the force.

[0073] At this time, when the hoop has no pre-tightening force, the spring 31 in the instantaneous force-releasing unlocking mechanism located at the symmetrical position of the delayed unlocking mechanism 2 in a compressed state instantly releases the pressure, pushing the slider 30 to move. Since the slider 30 is fixedly connected to the spring 28 and the locking nail 29, the mechanism is instantly unlocked and unloaded, and the protective cover 38 is instantly dropped off without being affected by the hoop tightening force. The present invention can simultaneously unload the force at the joints at the radially symmetrical position of the protective cover 38 after a certain delay, ensuring the instantaneous and reliable drop-off of the protective cover 38.

[0074] The present invention is a purely mechanical structure, which is easy to produce, cost-effective, and highly environmentally adaptable. The instantaneous unlocking of the annular locking device 1 is achieved by using a delayed unlocking mechanism 2 and an instantaneous force unloading unlocking mechanism 3. The delayed unlocking mechanism 2 adopts a time-controlled gear train with a certain transmission ratio, and the time control is stable.

[0075] The delayed unlocking part of the present invention adopts a dual redundant design, and the entire device adopts a radially symmetrical two-point simultaneous unlocking and unloading method, which improves the reliability of the product's instantaneous unlocking and unloading.

Claims

1. A mechanical delayed unlocking device, comprising a delayed unlocking mechanism (2) and an instantaneous force-releasing unlocking mechanism (3), characterized in that: One end of the delayed unlocking mechanism (2) is connected to one end of the instantaneous force unloading unlocking mechanism (3) via a left hoop (33), and the other end of the instantaneous force unloading unlocking mechanism (3) is connected to the other end of the delayed unlocking mechanism (2) via a right hoop (34); the delayed unlocking mechanism (2), the left hoop (33), the instantaneous force unloading unlocking mechanism (3) and the right hoop (34) form an annular locking device (1); The delayed unlocking mechanism (2) comprises a seat assembly (6) and an unlocking assembly (8), the seat assembly (6) being provided with a delayed unlocking device, the delayed unlocking device comprising a movement time control assembly (5) for delaying and a trigger assembly (7) for unlocking; The trigger component (7) is connected to the unlocking component (8) via the movement time control component (5), and the movement time control component (5) is limitedly connected to the seat body component (6) via the trigger component (7); When the trigger component (7) is actuated, the limit on the movement time control component (5) is released, the movement time control component (5) moves, driving the unlocking component (8) to unlock, the delayed unlocking mechanism (2) releases the connected left hoop (33) and right hoop (34), and at the same time, the instantaneous unloading unlocking mechanism (3) releases the connected left hoop (33) and right hoop (34); The unlocking assembly (8) comprises a baffle (22), a starting plate (19), and a rotating frame (16); a locking platform is provided on one side surface of the seat assembly (6), and the locking platform is fixedly connected to the seat assembly (6); The rotating frame (16) is fixedly arranged on the seat body assembly (6), and the rotating frame (16) is connected to one end of the starting plate (19) through a rotating shaft (18). The other end of the starting plate (19) extends to the side of the seat body assembly (6) where the locking platform is arranged, and is then rotatably connected to the baffle plate (22) through the starting rotating shaft (18). The baffle plate (22) is located directly above the locking platform, and a locking device for locking the left hoop (33) and the right hoop (34) is arranged on a side of the baffle plate (22) facing the locking platform. One end of the left hoop (33) and the right hoop (34) connected to the delayed unlocking mechanism (2) is arranged between the locking device and the locking platform. The rotation axis (18) line of the rotating shaft (18) is arranged perpendicular to the rotation axis (18) line of the baffle (22); A reed (20) is provided on one side of the start plate (19) facing the seat assembly (6); one end of the reed (20) is connected to the start plate (19), and the other end is connected to the seat assembly (6); The locking device comprises a locking cone head (23) fixedly connected to the baffle (22); a locking hole is arranged at a position of the locking platform corresponding to the locking cone head (23); and one end of the left hoop (33) and the right hoop (34) connected to the delayed unlocking mechanism (2) is arranged in an area between the locking cone head (23) and the locking hole; When the locking cone head (23) partially enters the locking hole, the locking cone head (23) squeezes and locks the left hoop (33) and the right hoop (34); when the locking cone head (23) moves away from the locking hole, the locking cone head (23) releases the left hoop (33) and the right hoop (34); The movement timing assembly (5) comprises a locking head (11); when the locking head (11) is retracted, the baffle (22) is released, the spring (20) is reset to bounce the start plate (19), the baffle (22) moves in a direction away from the locking platform and rotates around the axis of the start shaft (18), and the locking device releases the limit of the left hoop (33) and the right hoop (34); When the locking head (11) extends out of the seat assembly (6), the locking head (11) is located directly above the baffle (22), limiting the baffle (22) from moving away from the locking platform; The instantaneous force unloading unlocking mechanism (3) comprises a housing (25), wherein the housing (25) is provided with a central through hole, and end covers are fixedly connected to both ends of the housing (25), namely a left end cover (26) and a right end cover (27), and an area between the left end cover (26) and the right end cover (27) in the housing (25) is a sliding area, wherein a slider (30) is slidably provided in the sliding area, and through holes communicating with the sliding area are provided on the two end covers; One end of the slider (30) is connected to the left end cover (26) via a spring (31), and the other end is provided with two corresponding spring plates (28). One of the left band (33) and the right band (34) is connected to the two spring plates (28), and the other band extends from the through hole of the left end cover (26) into the spring (31) and is fixedly connected to the slider (30). When the spring (31) is reset and extended, the slider (30) is pushed to move, and the two spring sheets (28) are extended from the housing (25), and the band connected to the spring sheets (28) is separated from the spring sheets (28); One of the two spring pieces (28) is provided with a locking pin (29) facing the other spring piece (28), and the other spring piece (28) is provided with a locking hole (32) at a position corresponding to the locking pin (29); A through hole is provided on the hoop connected to the spring sheet (28), and the locking nail (29) is arranged in the locking hole (32) after passing through the through hole.

2. A mechanical time-delay unlocking device as claimed in claim 1, characterized in that: The movement time control assembly (5) comprises an input gear (24) and an output gear (9), wherein the input gear (24) is connected to the output gear (9) via an intermediate gear; The output gear (9) is connected to an unlocking and releasing mechanism, the middle portion of which is rotatably connected to the seat assembly (6), one end of the unlocking and releasing mechanism is a fan-shaped connecting head, and the other end is provided with a locking head (11); The connecting head is provided with teeth on its circumferential surface, and the teeth on the connecting head mesh with the output gear (9); The locking head (11) is connected to the unlocking assembly (8) in a limiting manner. When the output gear (9) rotates, the connecting head rotates accordingly, and the locking head (11) extends or retracts, thereby limiting or releasing the limit of the unlocking assembly (8). The input gear (24) is connected to a damper, the damper is arranged on a base assembly, the end of the connector close to the locking head (11) is connected to a drive block, the drive block is connected to the seat assembly (6) via a drive spring, and the trigger assembly (7) is connected to the damper limiter; When the trigger assembly (7) is separated from the damper and the limit on the movement time control assembly (5) is released, the drive spring is extended and reset, and the drive spring pushes the connector to delay reset under the action of the movement time control assembly (5) and the damper.

3. A mechanical time-delay unlocking device as claimed in claim 2, characterized in that: The trigger assembly (7) comprises a guide sleeve (12), a trigger pin (14) is arranged in the guide sleeve (12), a trigger limit hole matching and corresponding to the trigger pin (14) is arranged on the damper, one end of the trigger pin (14) extends into the trigger limit hole, and a ball head of the trigger pin (14) is arranged on the other end, a trigger boss is arranged in the middle of the trigger pin (14), and a trigger spring (15) is sleeved on the trigger pin (14) between the trigger boss and the trigger limit hole; One end of the guide sleeve (12) is fixedly connected to the seat assembly (6), and the other end is fixedly connected to a stop cap (13) that prevents the trigger pin (14) from popping out of the guide sleeve (12); When the trigger spring (15) lifts the trigger pin (14) from the trigger limit hole, the damper moves along with the input gear (24).

4. A mechanical time-delay unlocking device as claimed in claim 3, characterized in that: The damper comprises a balancing pendulum (17) and a riding wheel (10), the balancing pendulum (17) meshing with the riding wheel (10), the riding wheel (10) meshing with the input gear (24), a plurality of trigger limit holes being provided, and the trigger limit holes being all provided on the riding wheel (10), and the central axes of the trigger limit holes being all located on the same circle, and the center of the circle being located on the rotation axis of the riding wheel (10).

5. A mechanical time-delay unlocking device as claimed in claim 1, characterized in that: The seat body assembly (6) is provided with two delayed unlocking devices, which are arranged in parallel, and the locking heads (11) on the two delayed unlocking devices are respectively connected to the two ends of the baffle (22).

6. A mechanical time-delay unlocking device as claimed in any one of claims 1 to 5, characterized in that: It also includes a pre-tightening assembly (4), the pre-tightening assembly (4) including a pre-tightening screw (37), both ends of the pre-tightening screw (37) being provided with external threads of opposite rotation directions, one section of the external threads being connected to a forward-rotating nut (35), and the other section of the external threads being connected to a reverse-rotating nut (36); The left strap (33) or the right strap (34) is provided in two sections, namely a first strap section and a second strap section. One end of the first strap section is connected to the instantaneous force unloading unlocking mechanism (3), and the other end is connected to the reverse rotation nut (36). One end of the second strap section is connected to the forward rotation nut (35), and the other end is connected to the delayed unlocking mechanism (2).

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