Delayed landing release lock

Abstract

The utility model discloses a delayed landing release lock, the main body structure is an upper connecting plate and a lower connecting plate which are respectively connected with a parachute and a host / cargo through traction pin shafts, a shearing pin starting mechanism is sheared through the impact transmitted to the structure when the parachute is inflated, and when the host / cargo is in contact with the ground, the main body / cargo is released instantly. The tension of the upper connecting plate and the lower connecting plate is reduced to zero, the upper connecting plate and the lower connecting plate are separated through the combined action of the transverse shaft push rod and the longitudinal shaft push rod, and the whole working process is completed. The utility model has the advantages of light structure, no special process, low production cost, long storage life, low maintenance cost, safety and convenience in use, stable effect and impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of landing release lock technology for recovery / airdrop parachute systems, specifically, a delayed landing release lock. Background Technology

[0002] The landing release lock of an airdrop / recovery parachute system is mainly used to separate the parachute from the main unit / cargo after the airdropped / recovered payload touches the ground. Currently, the most widely used landing release lock separation method is the pyrotechnic explosion separation method. The specific structure of this pyrotechnic explosion separation method is as follows: the overall structure is a rotating body, with upper and lower joints fixed by shear pins. A piston is located above the shear pins in the connecting cavity of the upper and lower joints, and a pyrotechnic device is located above the piston. An electrical signal sent after the drone / cargo lands is used to ignite the pyrotechnic device. The piston moves under the action of the ignited pyrotechnic device and shears the shear pin, thus separating the upper and lower joints. This type of separation method requires an additional control circuit for control. The control circuit needs to determine whether the drone / cargo has landed. Premature unlocking may damage the drone / cargo, while delayed unlocking may cause the parachute to drag the drone / cargo, causing unnecessary losses, thus making the system more complex. The pyrotechnic separation method is not impact-resistant. During the parachute opening process, the release lock collides with the drone / cargo, which may give the piston enough energy to shear the shear pin, causing the release lock to separate prematurely. In addition, pyrotechnic devices have a certain degree of danger, resulting in higher usage and management costs. Summary of the Invention

[0003] The purpose of this invention is to provide a landing release lock with a delay function that allows for immediate release.

[0004] The technical solution to achieve the purpose of this utility model is as follows: a delayed landing release lock, including a connecting mechanism, a delay mechanism, a separation mechanism, and a safety mechanism; the connecting mechanism includes an upper connecting plate, a lower connecting plate, two traction pins, and a fixing pin; the delay mechanism includes a delay plate, a damping rod, a damping rod mounting nut, a damping rod fixing pin, a damping rod screw, and a spring; the separation mechanism includes two longitudinal axis push rods, two longitudinal axis limit nuts, a transverse axis push rod, a transverse axis limit nut, and a spring; the safety mechanism includes a shear pin and a lower connecting plate slider;

[0005] The lower connecting plate slider on the lower connecting plate is inserted into the upper connecting plate groove on the upper connecting plate to form a sliding pair connection between the upper connecting plate and the lower connecting plate; a traction pin is installed in the upper connecting plate pin hole symmetrically arranged at one end of the upper connecting plate, and another traction pin is installed in the lower connecting plate pin hole symmetrically arranged at the bottom end of the lower connecting plate, and the ends of the two traction pins are fixed by a fixing pin.

[0006] A delay plate cavity is provided below the pin hole of the upper connecting plate, and the delay mechanism is installed in the delay plate cavity; a damping rod mounting nut is installed at one end of the damping rod, and the delay plate is installed at the other end of the damping rod. The damping rod mounting nut and the damping rod are fixed by a damping rod fixing pin; the second end face of the other end of the damping rod is flush with the end face of the inner cavity of the delay plate, and a mounting hole is provided on the side near the end of the damping rod that mates with the delay plate. The first damping rod mounting hole and the delay plate positioning hole are connected by a damping rod screw.

[0007] Two longitudinal shaft cavities are symmetrically arranged on the upper connecting plate. Two longitudinal shaft push rods and two longitudinal shaft limiting nuts are respectively installed in the two longitudinal shaft cavities. A spring is provided between the longitudinal shaft push rods and the longitudinal shaft limiting nuts. A transverse shaft cavity is provided at the transverse shaft part of the upper connecting plate. A transverse shaft push rod and a transverse shaft limiting nut are installed in the transverse shaft cavity. A spring is provided between the transverse shaft push rod and the transverse shaft limiting nut.

[0008] A shear pin is inserted between the upper connecting plate and the lower connecting plate. A lower connecting plate slider has a lower connecting plate slider groove. The other side of the delay plate boss and the lower connecting plate slider groove form a longitudinal axis limit.

[0009] Furthermore, the main body of the delay plate is cylindrical, and a through hole with the same diameter as the damping rod is opened on the circular cross-section of the side connected to the damping rod. A positioning hole is provided on the outer side of the delay plate at the position corresponding to the mounting hole of the first damping rod. A rectangular boss extends from the lower part of the side of the delay plate main body connected to the damping rod. A cylindrical boss is provided on the side of the delay plate main body connected to the spring, and the diameter of the boss is the same as the inner diameter of the spring. A blind mounting hole is opened on the other side of the delay plate main body. The boss of the delay plate and the lower connecting plate slider form a horizontal axis limit with respect to the groove part.

[0010] Furthermore, the first end face of the damping rod is flush with the inner wall of the damping rod mounting nut, and the damping rod and the damping rod mounting nut are fixed by damping rod fixing pins inserted into the damping rod mounting nut mounting hole and the second damping rod mounting hole.

[0011] Furthermore, a spring is provided between the bottom end face of the damping rod mounting nut and one side end face of the rectangular boss of the delay plate.

[0012] Furthermore, the delay plate and the corresponding spring are sequentially installed into the delay plate cavity. The delay plate can slide in the delay plate cavity. One end of the spring rests against the end face of the delay plate. The damping rod mounting nut is fixed to one end of the damping rod by the damping rod fixing pin and then screwed into the thread at the end of the delay plate cavity. After being screwed in, it is screwed into the positioning hole of the delay plate by the set screw to fix the other end of the damping rod to the delay plate.

[0013] Furthermore, a first shear pin hole is provided on the upper connecting plate, and a second shear pin hole is provided on the lower connecting plate. The upper connecting plate and the lower connecting plate are laterally slidably adjusted to make the first shear pin hole on the upper connecting plate and the second shear pin hole on the lower connecting plate coaxial and insert a shear pin. At this time, the delay plate boss is in the slider groove of the lower connecting plate.

[0014] Furthermore, the parachute is connected to the upper connecting plate via a traction pin.

[0015] Furthermore, the main unit / cargo is connected to the lower connecting plate via a traction pin.

[0016] Furthermore, the insurance institution also includes a delay plate cover, which is located above the delay mechanism.

[0017] Furthermore, the delay plate cover is installed on the delay plate cover mounting groove of the upper connecting plate by countersunk screws, and the limiting surface of the cover plate contacts the delay plate to limit and cover it.

[0018] Furthermore, the two longitudinal shaft cavities are symmetrically arranged along the center line of the upper connecting plate, and a transverse shaft cavity is provided at the transverse shaft part of the upper connecting plate. The transverse shaft push rod and the transverse shaft limiting nut are installed in the transverse shaft cavity, and a spring is provided between the transverse shaft push rod and the transverse shaft limiting nut.

[0019] Furthermore, the two lower connecting plate sliders are symmetrically arranged along the center line of the lower connecting plate, the two longitudinal shaft cavities are arranged sequentially up and down along the center line of the upper connecting plate, the transverse shaft portion of the upper connecting plate is symmetrically provided with two transverse shaft cavities along the center line, the upper connecting plate is symmetrically provided with two upper connecting plate grooves along the center line, the center line of the transverse shaft cavity coincides with the center line of the upper connecting plate groove, the two transverse shaft push rods and the two transverse shaft limiting nuts are respectively installed in the two transverse shaft cavities, and a spring is provided between the transverse shaft push rods and the transverse shaft limiting nuts.

[0020] Compared with the prior art, the significant advantages of this utility model are:

[0021] (1) This utility model adopts a fully mechanical structure, requires no control circuit, and has no special process, making the structure of this utility model lightweight;

[0022] (2) This utility model does not contain any pyrotechnics, which makes the production cost of this utility model low, the shelf life long, the maintenance cost low, and the use safe and portable;

[0023] (3) The present invention adopts a keyway sliding pair connection, which makes the present invention impact resistant and stable. Attached Figure Description

[0024] Figure 1 This is a general drawing of one embodiment of the mechanism assembly of this utility model.

[0025] Figure 2This is a schematic diagram of the upper connecting plate according to one embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the lower connecting plate according to one embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the delay plate of this utility model.

[0028] Figure 5 This is a schematic diagram of the delay plate cover of this utility model.

[0029] Figure 6 This is a schematic diagram of the damping rod mounting nut of this utility model.

[0030] Figure 7 This is a schematic diagram of the damping rod fixing pin of this utility model.

[0031] Figure 8 This is a schematic diagram of the damping rod screw of this utility model.

[0032] Figure 9 This is a schematic diagram of the damping rod of this utility model.

[0033] Figure 10 This is a schematic diagram of the longitudinal axis push rod of this utility model.

[0034] Figure 11 This is a schematic diagram of the longitudinal axis limiting nut of this utility model.

[0035] Figure 12 This is a schematic diagram of the horizontal shaft push rod of this utility model.

[0036] Figure 13 This is a schematic diagram of the horizontal axis limiting nut of this utility model.

[0037] Figure 14 This is a schematic diagram of the traction pin shaft of this utility model.

[0038] Figure 15 This is a schematic diagram of the fixing pin of this utility model.

[0039] Figure 16 This is a schematic diagram of the shear pin of this utility model.

[0040] Figure 17 This is a schematic diagram of the time delay mechanism of this utility model.

[0041] Figure 18 This is a general drawing of another embodiment of the mechanism assembly of this utility model.

[0042] Figure 19 This is a schematic diagram of the upper connecting plate according to another embodiment of the present invention.

[0043] Figure 20This is a schematic diagram of the lower connecting plate according to another embodiment of the present invention. Detailed Implementation

[0044] This utility model provides a landing release locking mechanism using a purely mechanical mechanism. The main structure consists of an upper connecting plate and a lower connecting plate, which are respectively connected to the parachute and the main unit / cargo via traction pins. When the parachute is inflated, the impact shear pins are activated by the structure. When the main unit / cargo touches the ground, the tension of the upper and lower connecting plates decreases, and the upper and lower connecting plates are disengaged by the combined action of the horizontal and vertical push rods, thus completing the entire working process.

[0045] Because the entire mechanism uses a purely mechanical structure, its motion control depends entirely on the tension between the parachute and the load during descent. Insufficient tension causes the upper and lower connecting plates to disengage. However, during descent, the parachute "breathes" while inflating, meaning the tension between the parachute and the host / cargo fluctuates. During this process, insufficient tension may occur, causing the release lock to disengage mid-air. Therefore, a safety mechanism is needed to prevent the release lock from disengaging during the parachute's "breathing" process. The core component of this safety mechanism is the delay plate. After the shear pin is cut and the mechanism is activated, the delay plate disengages from the limiting groove due to the lateral relative displacement of the upper and lower connecting plates. Under the combined action of the spring and damping rod, it begins to move. Until it reaches its endpoint, the protrusion on the delay plate continuously restricts the lateral relative displacement of the upper and lower connecting plates. The time from mechanism activation to reaching the endpoint is called the delay time, completely covering the parachute's "breathing" process, thus achieving the safety function of the release lock. After the delay ends, the lateral displacement restriction of the upper and lower connecting plates is completely released, and once the host / cargo touches the ground and the tension decreases, disengagement is complete.

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0047] The reference numerals in the attached diagram are as follows: 1. Upper connecting plate; 101. Delay plate cavity; 102. Delay plate cover mounting groove; 103. Upper connecting plate pin hole; 104. Upper connecting plate slide groove; 105. Horizontal axis cavity; 106. Vertical axis cavity; 107. First shear pin hole of upper connecting plate; 2. Lower connecting plate; 201. Lower connecting plate pin hole; 202. Lower connecting plate slider; 203. Second shear pin hole of lower connecting plate; 204. Lower connecting plate slider groove; 3. Delay plate cover mounting groove; 4. Horizontal axis cavity; 5. Vertical axis cavity; 6. Vertical axis cavity; 7. Horizontal axis cavity; 8. Vertical axis cavity; 9. Horizontal axis cavity; 101. Delay plate cover mounting groove; 102. Delay plate cover mounting groove; 103. Upper connecting plate pin hole; 104. Lower connecting plate slide groove; 105. Horizontal axis cavity; 106. Vertical axis cavity; 107. First shear pin hole of upper connecting plate; 108. Horizontal axis cavity; 109. Vertical axis cavity; 100. Horizontal axis cavity; 100. Horizontal axis cavity; 100. Horizontal axis cavity; 101. Horizontal axis cavity; 102. Horizontal axis cavity; 103. Horizontal axis cavity; 104. Horizontal axis cavity; 105. Horizontal axis cavity; 106. Vertical axis cavity; 107. First shear pin hole of upper connecting plate; 108. Horizontal axis cavity; 109. Horizontal axis cavity; 10 ... 301. Delay plate end face; 302. Delay plate positioning hole; 303. Delay plate boss; 304. Delay plate stop surface; 4. Delay plate cover plate; 401. Cover plate limiting surface; 5. Damping rod mounting nut; 6. Damping rod fixing pin; 7. Damping rod screw; 8. Damping rod; 9. Longitudinal axis push rod; 10. Longitudinal axis limiting nut; 11. Horizontal axis push rod; 12. Horizontal axis limiting nut; 13. Traction pin; 14. Fixing pin; 15. Shearing pin.

[0048] Combination Figures 1 to 17 The present invention discloses a landing release lock with a time-delay function, comprising: a connecting mechanism: an upper connecting plate 1, a lower connecting plate 2, a traction pin 13, and a fixing pin 14; a time-delay mechanism: a time-delay plate 3, a damping rod 8, a damping rod mounting nut 5, a damping rod fixing pin 6, a damping rod screw 7, and a spring; a separation mechanism: a longitudinal axis push rod 9, a longitudinal axis limiting nut 10, a transverse axis push rod 11, a transverse axis limiting nut 12, and a spring; a safety mechanism: a shear pin 15, a time-delay plate cover plate 4, and a lower connecting plate slider groove 204; and several standard parts such as springs and screws.

[0049] In the connecting mechanism, the upper connecting plate 1 and the lower connecting plate 2 are connected by a sliding pair formed by the upper connecting plate slide groove 104 and the lower connecting plate slider 202; the parachute is connected to the upper connecting plate pin hole 103 through the traction pin shaft 13, and the host / cargo is connected to the lower connecting plate pin hole 201 through the traction pin shaft 13, with the end of the pin shaft fixed by the fixing pin 14.

[0050] In the delay mechanism, the left end face 801 of the damping rod is flush with the inner wall 501 of the damping rod mounting nut. The damping rod 8 and the damping rod mounting nut 5 are fixed by a damping rod fixing pin 6 inserted into the damping rod mounting nut mounting hole 502 and the damping rod mounting hole 802. The right end face 803 of the damping rod is flush with the end face of the delay plate 305. The damping rod mounting hole 804 and the delay plate positioning hole 302 are connected by a damping rod screw 7. A spring is provided between the end face 503 of the damping rod mounting nut and the end face 301 of the delay plate. The delay mechanism is installed in the delay plate cavity 101 of the upper connecting plate.

[0051] In the separation mechanism, the longitudinal shaft push rod 9 and the longitudinal shaft limiting nut 10 are installed in the longitudinal shaft cavity 106 of the upper connecting plate, and a spring is provided between the longitudinal shaft push rod 9 and the longitudinal shaft limiting nut 10; the transverse shaft push rod 11 and the transverse shaft limiting nut 12 are installed in the transverse shaft cavity 105 of the upper connecting plate, and a spring is provided between the transverse shaft push rod 11 and the transverse shaft limiting nut 12.

[0052] The insurance mechanism is divided into three parts: the first part is the shear pin 15 between the upper connecting plate 1 and the lower connecting plate 2; the second part is the delay cover plate 4 above the delay mechanism; and the third part is the longitudinal axis limit between the delay plate boss 304 and the lower connecting plate slider groove 204.

[0053] The parachute is connected to the upper connecting plate 1 via the traction pin 13.

[0054] The host / cargo is connected to the lower connecting plate 2 via the traction pin 13.

[0055] The delay plate 3 is cylindrical in shape. On the side connected to the damping rod 8, there is a through hole with the same diameter as the damping rod on the circular cross section. On the outer side of the delay plate 3, corresponding to the mounting hole of the damping rod, there is a second through hole, namely a positioning hole 302. Between the second through hole and the side where the delay plate connects to the damping rod, there is a rectangular boss 303. The direction of the boss is perpendicular to the direction of the second through hole, and the width is equal to the radius of the cylindrical shape of the delay plate base. On the side where the delay plate 3 connects to the spring, there is a cylindrical boss with the same diameter as the inner diameter of the spring. On the side of the delay plate 3 that is not connected to the damping rod 8, there is a blind mounting hole. The boss 303 of the delay plate 3 and the lower connecting plate slider 202, except for the groove part, form a horizontal axis limit.

[0056] The delay plate 3 and the corresponding springs are sequentially installed into the delay plate cavity 101 of the upper connecting plate 1. The delay plate 3 can slide in the delay plate cavity 101. One end of the spring rests on the end face 301 of the delay plate. The damping rod mounting nut 5 is fixed to one end of the damping rod by the damping rod fixing pin 6 and then screwed into the thread at the end of the delay plate cavity 101 of the upper connecting plate 1. After being screwed in, the other end of the damping rod is fixed to the delay plate 3 by screwing the set screw into the delay plate positioning hole 302. Then, the delay plate cover plate 4 is installed on the delay plate cover plate mounting groove 102 of the upper connecting plate 1 by four countersunk screws. The cover plate limiting surface 401 contacts the delay plate 3 to limit and cover it. Two traction pins 13 are respectively installed on the pin holes 103 and 201 of the upper connecting plate and limited by the fixing pins 14. The upper connecting plate slide groove 104 cooperates with the lower connecting plate slider 202, forming a sliding pair that can slide laterally and longitudinally. The horizontal shaft push rod 11, along with the corresponding spring and horizontal shaft limiting nut 12, is installed in the horizontal shaft cavity 105 of the upper connecting plate 1. The two vertical shaft push rods 9, along with the corresponding spring and vertical shaft limiting nut 10, are installed in the vertical shaft cavity 106 of the upper connecting plate 1 in the same manner. The upper connecting plate 1 and the lower connecting plate 2 are adjusted to slide laterally relative to each other, so that the shear pin hole 107 of the upper connecting plate and the shear pin hole 203 of the lower connecting plate are coaxial and the shear pin 15 is inserted. At this time, the delay plate boss 303 is in the lower connecting plate slider groove 204.

[0057] When the mechanism is activated, both traction pins 11 are simultaneously impacted by the traction force from the recovery umbrella system, and the shear pin 13 is sheared off. The delay plate boss 303 disengages from the groove 204 of the lower connecting plate slider and moves towards the edge under the combined action of the damping rod 8 and the spring. At this time, the delay plate boss 303 is still pressing against the end face of the lower connecting plate slider 202, so there is no relative displacement between the upper connecting plate 1 and the lower connecting plate 2. The delay plate stops moving when the delay plate stop surface 304 moves to contact the upper connecting block 1, and the movement of the delay plate 3 stops. The lateral movement of the lower connecting plate 2 is no longer restricted, and the delay ends. When the tension on the two traction pins 11 is less than the elastic force of the spring at the horizontal shaft push rod 9, the horizontal shaft push rod 9 installed in the upper connecting plate 1 pushes the lower connecting plate 2 laterally under the spring's thrust. When the lower connecting plate slider 202 is completely pushed out of the upper connecting plate groove 104, the upper connecting plate 1 and the lower connecting plate 2, which have lost their longitudinal constraints, are separated under the push of the two longitudinal shaft push rods 7. Thus, the disengagement action is completed.

[0058] In addition, combined Figure 18-20 This is another specific embodiment of the delayed landing release lock of this utility model.

[0059] When the two longitudinal shaft cavities 106 are symmetrically arranged along the center line of the upper connecting plate 1, a transverse shaft cavity 105 is provided at the transverse shaft part of the upper connecting plate 1. The transverse shaft push rod 11 and the transverse shaft limiting nut 12 are installed in the transverse shaft cavity 105, and a spring is provided between the transverse shaft push rod 11 and the transverse shaft limiting nut 12.

[0060] When the two lower connecting plate sliders 202 are symmetrically arranged along the center line of the lower connecting plate 2, the two longitudinal shaft cavities 106 are arranged sequentially up and down along the center line of the upper connecting plate 1. The horizontal shaft part of the upper connecting plate 1 is symmetrically provided with two horizontal shaft cavities 105 along the center line. The upper connecting plate 1 is symmetrically provided with two upper connecting plate grooves 104 along the center line. The center line of the horizontal shaft cavity 105 coincides with the center line of the upper connecting plate groove 104. The two horizontal shaft push rods 11 and the two horizontal shaft limiting nuts 12 are respectively installed in the two horizontal shaft cavities 105. A spring is provided between the horizontal shaft push rods 11 and the horizontal shaft limiting nuts 12.

[0061] This utility model has a lightweight structure, requires no special processes, has low production costs, a long shelf life, low maintenance costs, is safe and convenient to use, has stable performance, and is impact resistant.

[0062] The above description is merely a preferred embodiment of the present utility model and does not impose any limitations on the present utility model. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the invention, in order to depart from the scope of the present utility model, shall still fall within the scope of the present utility model.

Claims

1. A delayed landing release lock, characterized in that: It includes a connecting mechanism, a delay mechanism, a separation mechanism, and a safety mechanism; the connecting mechanism includes an upper connecting plate (1), a lower connecting plate (2), two traction pins (13), and a fixing pin (14); the delay mechanism includes a delay plate (3), a damping rod (8), a damping rod mounting nut (5), a damping rod fixing pin (6), a damping rod screw (7), and a spring; the separation mechanism includes two longitudinal axis push rods (9), two longitudinal axis limit nuts (10), a transverse axis push rod (11), a transverse axis limit nut (12), and a spring; the safety mechanism includes a shear pin (15) and a lower connecting plate slider (202); The lower connecting plate slider (202) on the lower connecting plate (2) is engaged with the upper connecting plate groove (104) on the upper connecting plate (1) to form a sliding pair connection between the upper connecting plate (1) and the lower connecting plate (2); a traction pin (13) is installed in the upper connecting plate pin hole (103) symmetrically arranged at one end of the upper connecting plate (1), and another traction pin (13) is installed in the lower connecting plate pin hole (201) symmetrically arranged at the bottom end of the lower connecting plate (2). The ends of the two traction pins (13) are fixed by a fixing pin (14); A delay plate cavity (101) is provided below the upper connecting plate pin hole (103) of the upper connecting plate (1), and the delay mechanism is installed in the delay plate cavity (101); a damping rod mounting nut (5) is installed at one end of the damping rod (8), and a delay plate (3) is installed at the other end of the damping rod (8). The damping rod mounting nut (5) and the damping rod (8) are fixed by a damping rod fixing pin (6); the second end face (803) of the other end of the damping rod (8) is flush with the end face (305) of the inner cavity of the delay plate (3), and a mounting hole (804) is provided on the side of the end of the damping rod (8) that mates with the delay plate (3). The first damping rod mounting hole (804) and the positioning hole (302) of the delay plate (3) are connected by a damping rod screw (7). Two longitudinal shaft cavities (106) are symmetrically arranged on the upper connecting plate (1). Two longitudinal shaft push rods (9) and two longitudinal shaft limiting nuts (10) are respectively installed in the two longitudinal shaft cavities (106). A spring is provided between the longitudinal shaft push rods (9) and the longitudinal shaft limiting nuts (10). A transverse shaft cavity (105) is provided on the transverse shaft part of the upper connecting plate (1). A transverse shaft push rod (11) and a transverse shaft limiting nut (12) are installed in the transverse shaft cavity (105). A spring is provided between the transverse shaft push rod (11) and the transverse shaft limiting nut (12). A shear pin (15) is inserted between the upper connecting plate (1) and the lower connecting plate (2). A lower connecting plate slider (202) is provided with a lower connecting plate slider groove (204). A longitudinal axis limit is formed between the other side (304) of the delay plate (3) boss and the lower connecting plate slider groove (204).

2. The delayed landing release lock according to claim 1, characterized in that: The main body of the delay plate (3) is cylindrical. A through hole with the same diameter as the damping rod (8) is opened on the circular cross section of the side connected to the damping rod (8). A positioning hole (302) is provided on the outer side of the delay plate (3) corresponding to the mounting hole (804) of the first damping rod. A rectangular boss (303) extends from the lower side of the side of the delay plate (3) connected to the damping rod (8). A cylindrical boss is provided on the side of the delay plate (3) connected to the spring. The diameter of the boss is the same as the inner diameter of the spring. A blind hole is opened on the other side of the delay plate (3). The boss (303) of the delay plate (3) and the lower connecting plate slider (202) form a horizontal axis limit with the groove part.

3. The delayed landing release lock according to claim 1 or 2, characterized in that: The first end face (801) of the damping rod (8) is flush with the inner wall (501) of the damping rod mounting nut (5). The damping rod (8) and the damping rod mounting nut (5) are fixed by the damping rod fixing pin (6) inserted into the damping rod mounting nut mounting hole (502) and the second damping rod mounting hole (802).

4. The delayed landing release lock according to claim 1 or 2, characterized in that: A spring is provided between the bottom end face (503) of the damping rod mounting nut (5) and the end face (301) of the time delay plate on one side of the rectangular boss of the time delay plate (3).

5. The delayed landing release lock according to claim 1 or 2, characterized in that: The delay plate (3) and the corresponding spring are sequentially installed into the delay plate cavity (101). The delay plate (3) can slide in the delay plate cavity (101). One end of the spring rests on the end face (301) of the delay plate. The damping rod mounting nut (5) is fixed to one end of the damping rod (8) by the damping rod fixing pin (6) and then screwed into the thread at the port of the delay plate cavity (101). After being screwed into place, it is screwed into the delay plate positioning hole (302) by the set screw to fix the other end of the damping rod (8) to the delay plate (3).

6. The delayed landing release lock according to claim 1, characterized in that: The upper connecting plate (1) is provided with a first shear pin hole (107), and the lower connecting plate (2) is provided with a second shear pin hole (203). The upper connecting plate (1) and the lower connecting plate (2) are adjusted to slide relative to each other in the lateral direction so that the first shear pin hole (107) of the upper connecting plate and the second shear pin hole (203) of the lower connecting plate are coaxial and shear pin (15) is inserted. At this time, the delay plate boss (303) is in the slider groove (204) of the lower connecting plate.

7. The delayed landing release lock according to claim 1, characterized in that: The insurance institution also includes a delay plate cover (4), which is located above the delay mechanism.

8. The delayed landing release lock according to claim 7, characterized in that: The delay plate cover (4) is installed on the delay plate cover mounting groove (102) of the upper connecting plate (1) by countersunk screws. The cover plate limiting surface (401) contacts the delay plate (3) to limit and cover it.

9. The delayed landing release lock according to claim 1, characterized in that: The two longitudinal cavities (106) are symmetrically arranged along the center line of the upper connecting plate (1), and a transverse cavity (105) is provided at the transverse axis of the upper connecting plate (1).

10. The delayed landing release lock according to claim 1, characterized in that: The two lower connecting plate sliders (202) are symmetrically arranged along the center line of the lower connecting plate (2). The two longitudinal shaft cavities (106) are arranged sequentially up and down along the center line of the upper connecting plate (1). The horizontal shaft part of the upper connecting plate (1) is symmetrically provided with two horizontal shaft cavities (105) along the center line. The upper connecting plate (1) is symmetrically provided with two upper connecting plate grooves (104) along the center line. The center line of the horizontal shaft cavity (105) coincides with the center line of the upper connecting plate groove (104). The two horizontal shaft top rods (11) and the two horizontal shaft limiting nuts (12) are respectively installed in the two horizontal shaft cavities (105). A spring is provided between the horizontal shaft top rods (11) and the horizontal shaft limiting nuts (12).

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