Locking mechanism and hoisting device for vertical rocket body

Abstract

The invention discloses a locking mechanism and a lifting device for a vertical rocket body, and relates to the technical field of rocket recovery, the locking mechanism for the vertical rocket body comprises a lifting appliance body, and a conical guide plate is arranged on the bottom surface of the lifting appliance body; and each automatic retraction assembly comprises an assembly frame arranged on the bottom face of the lifting appliance body, a force bearing pin is arranged on the assembly frame in a sliding mode, and the force bearing pin in each automatic retraction assembly can be driven to move in a reciprocating mode in the radial line direction of the lifting appliance body. The locking mechanism for the rocket body in the vertical state solves the technical problems that an existing rocket body hoisting mode is tedious in operation and long in consumed time, manual intervention is needed, and potential safety hazards are high. The whole rocket body locking process is easy to operate, manual intervention is not needed, safety is higher, large operation space is not needed, the locking time of the rocket body is effectively shortened, and the locking efficiency of the rocket body is improved.

Description

Technical Field

[0001] This invention relates to the field of rocket recovery technology, and in particular to a locking mechanism and hoisting device for a rocket body in a vertical position. Background Technology

[0002] The rocket adopts a cluster-type reusable design, which can recover the boosters and the first stage without separating them. A single recovery device can recover all three modules, greatly improving recovery efficiency. The innovative recovery design also changes the traditional rocket assembly process, changing the docking assembly of the first and second stages from the vertical assembly plant to the launch tower. This change in the assembly environment has a fundamental impact on the rocket hoisting and docking.

[0003] Currently used lifting devices for rocket bodies, spacecraft, and other products typically consist of a traditional "lifting ring + sling + lifting beam + shackle sling + turnbuckle + lifting frame" configuration. During lifting, operators must use a lift to climb to the top to connect the lifting frame and then the shackles. When the center of gravity of the lifting device is uneven, repeated lifting and adjustment of the turnbuckle are necessary, making the operation cumbersome, time-consuming, and requiring manual intervention, posing significant safety hazards. Therefore, this paper proposes a locking mechanism and lifting device for vertically positioned rocket bodies to address these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a locking mechanism and hoisting device for a vertically positioned arrow body, which solves the technical problems of existing arrow body hoisting methods being cumbersome, time-consuming, requiring manual intervention, and posing high safety risks.

[0005] To achieve the above objectives, the present invention provides a locking mechanism for a vertically positioned arrow body, comprising: a lifting device body, wherein a tapered guide plate is provided on the bottom surface of the lifting device body, and a plurality of automatic retraction components are arrayed on the bottom surface of the lifting device body;

[0006] The automatic retraction assembly includes: an assembly frame disposed on the bottom surface of the lifting device body, and a load-bearing pin slidably disposed on the assembly frame. The load-bearing pin in each automatic retraction assembly can be driven to reciprocate along the radial direction of the lifting device body so that the load-bearing pin is inserted into or withdrawn from the docking groove on the inner peripheral side of the arrow body.

[0007] Preferably, a first drive motor is provided on the top surface of the lifting device body, a drive gear is provided at the output end of the first drive motor, the upper end of the tapered guide plate is rotatably connected to the lifting device body through a slewing bearing, and an annular rack is provided on the inner circumferential side of the slewing bearing, the annular rack meshing with the drive gear.

[0008] Preferably, the bottom surface of the lifting device body is arrayed with several horizontal adjustment components, each horizontal adjustment component including: a mounting frame, the lower end of which is rotatably connected to a rotating shaft; a second drive motor is provided at the lower end of the mounting frame, the output end of the second drive motor is connected to the rotating shaft, the rotating shaft is connected to a first telescopic push rod, and a top plate is provided at the lower end of the first telescopic push rod.

[0009] Preferably, the assembly frame includes: a first vertical baffle and a second vertical baffle disposed on the bottom surface of the lifting device body, wherein the first vertical baffle and the second vertical baffle are connected to the lifting device body by a plurality of bolts.

[0010] Preferably, a plurality of horizontal limiting baffles are provided between the first vertical baffle and the second vertical baffle, and the plurality of horizontal limiting baffles are combined to form a guide hole, the guide hole being slidably connected to the load-bearing pin.

[0011] Preferably, a second telescopic push rod is provided on the bottom surface of the lifting device body, and the telescopic end of the second telescopic push rod is connected to the load-bearing pin.

[0012] Preferably, when the inner side of the tapered guide plate abuts against the edge of the top surface of the arrow body and the second telescopic push rod is in the retracted state, the load-bearing pin is located on the inner side of the arrow body.

[0013] Preferably, the end face of the load-bearing pin away from the center of the lifting device body is chamfered.

[0014] A hoisting device includes a locking mechanism for a vertically positioned arrow body as described in any of the preceding claims, and also includes a crane and a hook mounted on the crane.

[0015] Preferably, the hook is provided with an upper fixed seat, and the top surface of the lifting device body is arranged with several lower fixed seats, each of which is connected to the outer peripheral side of the lower fixed seat through a lifting ring.

[0016] Compared to the aforementioned background technology, the locking mechanism for a vertically positioned arrow body provided by this invention has the following beneficial effects: After the lifting device body is moved directly above the arrow body, during the descent of the lifting device body, the conical guide plate will first contact the arrow body. At this time, the inner side of the conical guide plate abuts against the edge of the top surface of the arrow body, and the lifting device body and the arrow body are coaxial, completing the automatic docking of the lifting device body and the arrow body. Then, the load-bearing pins in each automatic retraction component are controlled to move along the radial direction of the lifting device body towards the edge of the arrow body, causing the load-bearing pins to insert into the corresponding docking grooves on the inner circumferential side of the arrow body, completing the automatic locking of the arrow body. This ensures smooth subsequent automatic lifting of the arrow body in a vertical position after retrieval and placement. The entire arrow body locking process is simple to operate, requires no manual intervention, is safer, and does not require a large operating space. It can meet the requirements for lifting arrow bodies in harsh outdoor environments, effectively shortening the locking time and improving the locking efficiency of the arrow body. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a perspective structural diagram of the locking mechanism provided in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of the locking mechanism provided in an embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the automatic indentation component provided in an embodiment of the present invention.

[0021] Specifically, 1-Lifting device body; 2-Conical guide plate; 3-Bearing pin; 4-Assembly frame; 401-First vertical baffle; 402-Second vertical baffle; 403-Horizontal limit baffle; 5-Second telescopic push rod; 6-Arrow body; 601-Flange flange; 602-Interface stiffener; 603-Docking groove; 7-Slewing bearing; 701-Annular rack; 8-First drive motor; 9-Drive gear; 10-Lower fixed seat; 11-Lifting ring; 12-Upper fixed seat; 13-Mounting frame; 14-Second drive motor; 15-First telescopic push rod; 16-Top plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 and Figure 2 As shown, to achieve the above objective, the present invention provides a locking mechanism for a vertically positioned arrow body, comprising: a lifting device body 1 and a conical guide plate 2 disposed on the bottom surface of the lifting device body 1. During the descent of the lifting device body 1 directly above the arrow body 6, the conical guide plate 2 first contacts the arrow body 6. At this time, the inner side of the conical guide plate 2 abuts against the edge of the top surface of the arrow body 6, and the lifting device body 1 and the arrow body 6 are coaxial, thereby completing the automatic docking of the lifting device body 1 and the arrow body 6.

[0025] It should be noted that the diameter of the bottom of the conical guide plate 2 is larger than the outer diameter of the arrow body 6, and the diameter of the upper part of the conical guide plate 2 is smaller than the outer diameter of the arrow body 6. Furthermore, the top surface of the lifting device body 1 remains horizontal during the descent process to ensure that the inner side of the conical guide plate 2 can properly abut against the edge of the top surface of the arrow body 6.

[0026] In addition, several automatic retraction components are arrayed on the bottom surface of the lifting device body 1. Each automatic retraction component includes an assembly frame 4 fixedly connected to the bottom surface of the lifting device body 1. A load-bearing pin 3, cylindrical in shape, is slidably mounted on the assembly frame 4. Each load-bearing pin 3 in the automatic retraction component can be driven to reciprocate along the radial direction of the lifting device body 1, allowing it to insert into or exit the corresponding mating groove 603 on the inner circumferential side of the arrow body 6. Optionally, the mating groove 603 is the gap below the flange flange 601 at the upper end of the arrow body 6. When the inner side of the tapered guide plate 2 abuts against the edge of the top surface of the arrow body 6, and the lifting device body 1 and the arrow body 6 are coaxial, the load-bearing pin 3 in each automatic retraction component is controlled to move along the radial direction of the lifting device body 1 towards the edge of the arrow body 6, causing the load-bearing pin 3 to insert into the corresponding mating groove 603 on the inner circumferential side of the arrow body 6, thus completing the automatic locking of the arrow body 6. The entire locking process of the rocket body 6 is simple to operate, requires no manual intervention, is safer, and does not require a large operating space. It can meet the requirements of lifting the rocket body 6 in harsh outdoor environments, effectively shorten the locking time of the rocket body 6, and improve the locking efficiency of the rocket body 6.

[0027] It should be noted that the integrated locking mechanism consists of the lifting device body 1 and the automatic retraction component. Its overall structure is simple and functionally stable, making it suitable for outdoor, high-altitude, windy, rainy, and salt spray environments, thus offering a wide range of applications and better practicality. Optionally, the lifting device body 1 can be designed as a single unit, consisting only of the lifting device body 1 and the automatic retraction component. This allows the integrated locking mechanism to be placed inside a transport vehicle or in a fixed location, making it more convenient to use. Furthermore, using a crane as an external power source to drive the lifting device body 1 enhances operability and eliminates limitations imposed by external power conditions, further ensuring the practicality of the integrated locking mechanism.

[0028] In use, after the rocket body 6 is retrieved and positioned vertically, the lifting device body 1 is moved to directly above the rocket body 6. Then, the lifting device body 1 is lowered until the conical guide plate 2 contacts the rocket body 6 first. At this point, the inner side of the conical guide plate 2 abuts against the edge of the top surface of the rocket body 6. The lifting device body 1 and the rocket body 6 are coaxial, completing the automatic docking of the lifting device body 1 and the rocket body 6. Then, the load-bearing pins 3 in each automatic retraction component are controlled to move along the radial direction of the lifting device body 1 towards the edge of the rocket body 6, so that the load-bearing pins 3 are inserted into the corresponding docking grooves 603 on the inner circumferential side of the rocket body 6, completing the automatic locking of the rocket body 6, so as to ensure the smooth automatic lifting of the rocket body 6 in a vertical position after retrieval and positioning.

[0029] like Figure 2 As shown, in some embodiments of the present invention, a first drive motor 8 is provided on the top surface of the lifting device body 1. Preferably, the first drive motor 8 is a servo motor. A drive gear 9 is provided at the output end of the first drive motor 8. In addition, a slewing bearing 7 is provided at the upper end of the tapered guide plate 2. The slewing bearing 7 is rotatably connected to the lifting device body 1. A ring rack 701 is provided on the circumferential inner side of the upper end of the slewing bearing 7. The ring rack 701 is meshed with the drive gear 9. It should be noted that a transmission mechanism (not shown in the figure) is provided at the output end of the first drive motor 8. The transmission mechanism is used to drive the first drive motor 8 and the drive gear 9. Its purpose is to change the arrangement of the drive gear 9 to ensure that the ring rack 701 and the drive gear 9 can mesh. After the inner side of the conical guide plate 2 abuts against the edge of the top surface of the arrow body 6, the first drive motor 8 drives the drive gear 9 to rotate. Through the transmission connection between the drive gear 9 and the ring rack 701, the lifting device body 1 rotates relative to the conical guide plate 2 at a certain angle. This causes all the load-bearing pins 3 to align with the corresponding docking grooves 603 on the inner circumferential side of the arrow body 6 along the radial direction of the lifting device body 1. This allows all the load-bearing pins 3 to avoid the interface ribs 602 as they move towards the edge of the arrow body 6 along the radial direction of the lifting device body 1. The docking grooves 603 are located between the two interface ribs 602, thereby ensuring that each load-bearing pin 3 is accurately inserted into the corresponding docking grooves 603 on the inner circumferential side of the arrow body 6, thus guaranteeing the reliability of the lifting.

[0030] In some embodiments of the present invention, a plurality of horizontal adjustment components are arranged in an array on the bottom surface of the lifting device body 1. Specifically, four horizontal adjustment components are arranged at equal angles on the bottom surface of the lifting device body 1. The horizontal adjustment components include: a mounting frame 13, the upper end of the mounting frame 13 being connected to the bottom surface of the lifting device body 1, and the lower end of the mounting frame 13 being rotatably connected to a rotating shaft; a second drive motor 14 is provided at the lower end of the mounting frame 13. Preferably, the second drive motor 14 is a servo motor. The output end of the second drive motor 14 is connected to the rotating shaft. The rotating shaft is connected to a first telescopic push rod 15. Optionally, the first telescopic push rod 15 can be a hydraulic push rod or an electric push rod. A top plate 16 is provided at the lower end of the first telescopic push rod 15. When the inner side of the conical guide plate 2 abuts against the edge of the top surface of the arrow body 6, and the lifting device body 1 is in a non-horizontal state, the first telescopic push rod 15 in each horizontal adjustment assembly is controlled to extend to a first preset length, so that the top plate 16 is located below the flange flange 601. At the same time, the second drive motor 14 in each horizontal adjustment assembly is controlled to drive the first telescopic push rod 15 to rotate forward to a first preset angle, so that the side of the top plate 16 in each horizontal adjustment assembly abuts against the inner wall of the arrow body 6, thereby straightening the conical guide plate 2; further, the horizontal adjustment assembly is controlled to extend to the .... The second drive motor 14 drives the first telescopic push rod 15 to rotate forward to the second preset angle, and synchronously controls the first telescopic push rod 15 in each horizontal adjustment component to retract to the second preset length until the top plate 16 in each horizontal adjustment component is on the same horizontal plane. At this time, the inner side of the conical guide plate 2 abuts against the edge of the top surface of the arrow body 6, and the bottom surface of the lifting device body 1 is in a horizontal state. This effectively prevents the load-bearing pin 3 from interfering with the flange flange 601 during the movement of the lifting device body 1 towards the edge of the arrow body 6 along the radial direction, and ensures the smooth operation of the automatic locking operation of the arrow body 6. When the lifting device body 1 is in a horizontal state, the first telescopic push rod 15 in each horizontal adjustment assembly is controlled to extend to a second preset length, so that the top plate 16 abuts against the bottom of the flange 601. At the same time, the second drive motor 14 in each horizontal adjustment assembly is controlled to drive the first telescopic push rod 15 to rotate forward to a second preset angle, so that the side of the top plate 16 in each horizontal adjustment assembly abuts against the inner wall of the arrow body 6, and the top plates 16 in each horizontal adjustment assembly are on the same horizontal plane, thus directly completing the horizontal adjustment of the lifting device body 1.

[0031] It should be noted that the lower end of the first telescopic push rod 15 is bent upward at a certain angle to ensure that the first telescopic push rod 15 rotates to the second preset angle. When the first telescopic push rod 15 extends to the second preset length, the top surface of the top plate 16 can fit exactly with the bottom surface of the flange 601, thereby stably supporting the flange 601.

[0032] Optionally, several levels can be arrayed on the top surface of the lifting device body 1. When the inner side of the conical guide plate 2 abuts the edge of the top surface of the arrow body 6, the level can be used to detect whether the lifting device body 1 is in a horizontal state.

[0033] like Figure 3 As shown, in some embodiments of the present invention, the assembly frame 4 includes: a first vertical baffle 401 and a second vertical baffle 402 disposed on the bottom surface of the lifting device body 1, wherein the first vertical baffle 401 and the second vertical baffle 402 are connected to the lifting device body 1 by a plurality of bolts to fix the overall assembly frame 4 to the bottom surface of the lifting device body 1. In addition, a plurality of horizontal limiting baffles 403 are disposed between the first vertical baffle 401 and the second vertical baffle 402. When the lifting device body 1 is arranged horizontally, the horizontal limiting baffles 403 extend in the horizontal direction, and the plurality of horizontal limiting baffles 403 are combined to form a guide hole. The guide hole is slidably connected to the load-bearing pin 3, and the extension direction of the guide hole is consistent with the movement direction of the load-bearing pin 3.

[0034] In some embodiments of the present invention, a second telescopic push rod 5 is provided on the bottom surface of the lifting device body 1. Optionally, the second telescopic push rod 5 can be a hydraulic push rod or an electric push rod. The telescopic end of the second telescopic push rod 5 is connected to the load-bearing pin 3. The second telescopic push rod 5 can drive the load-bearing pin 3 to reciprocate along the radial direction of the lifting device body 1, so that the load-bearing pin 3 is inserted into or withdrawn from the corresponding mating groove 603 on the inner circumferential side of the arrow body 6. It should be noted that the telescopic direction of the second telescopic push rod 5 is consistent with the extension direction of the guide hole to ensure that the second telescopic push rod 5 can smoothly push and pull the load-bearing pin 3, so that the load-bearing pin 3 reciprocates along the extension direction of the guide hole.

[0035] It should be noted that when the inner side of the conical guide plate 2 abuts against the edge of the top surface of the arrow body 6 and the second telescopic push rod 5 is in the retracted state, the load-bearing pin 3 is located on the inner side of the arrow body 6 to ensure that the inner side of the conical guide plate 2 can properly abut against the edge of the top surface of the arrow body 6, and smoothly complete the automatic docking of the lifting device body 1 and the arrow body 6. At this time, the load-bearing pin 3 in each automatic retraction component is controlled to move close to the edge of the arrow body 6 along the radial direction of the lifting device body 1. The load-bearing pin 3 is inserted into the corresponding docking groove 603 on the inner circumferential side of the arrow body 6 to complete the automatic locking of the arrow body 6.

[0036] It should be further noted that the second telescopic push rod 5 and the load-bearing pin 3 in each automatic retraction component are independently controlled, and the automatic retraction components do not affect each other. If one automatic retraction component malfunctions or is under routine maintenance, it is not necessary to replace or maintain other automatic retraction components.

[0037] In some embodiments of the present invention, the end face of the bearing pin 3 away from the center of the lifting device body 1 is provided with a chamfer. The chamfer can provide a certain guiding effect for the bearing pin 3, and avoid interference between the bearing pin 3 and the flange 601 during the process of inserting the bearing pin 3 into the corresponding docking groove 603 on the inner circumferential side of the arrow body 6, so as to ensure that the bearing pin 3 is smoothly inserted into the corresponding docking groove 603 on the inner circumferential side of the arrow body 6.

[0038] The working principle of this invention is as follows: After the rocket body 6 is retrieved and positioned vertically, the lifting device body 1 is moved to directly above the rocket body 6 by a crane. Then, the lifting device body 1 is lowered until the conical guide plate 2 contacts the rocket body 6 first. At this point, the inner side of the conical guide plate 2 abuts against the edge of the top surface of the rocket body 6. At this time, the lifting device body 1 and the rocket body 6 are coaxial, completing the automatic docking of the lifting device body 1 and the rocket body 6. The first drive motor 8 drives the drive gear 9 to rotate, utilizing the interaction between the drive gear 9 and the ring rack 701... The transmission connection allows the lifting device body 1 to rotate relative to the conical guide plate 2 by a certain angle, thereby aligning all the load-bearing pins 3 with the corresponding docking grooves 603 on the inner circumferential side of the arrow body 6 along the radial direction of the lifting device body 1. Then, the load-bearing pins 3 in each automatic retraction assembly are driven to move closer to the edge of the arrow body 6 along the radial direction of the lifting device body 1. The load-bearing pins 3 avoid the interface rib plate 602 and insert into the corresponding docking grooves 603, completing the automatic locking of the arrow body 6 and controlling the crane to lift and retrieve the vertically positioned arrow body 6.

[0039] In addition to the locking mechanism described above, the present invention also provides a lifting device including a crane and the locking mechanism disclosed in the above embodiments, and further includes a crane and a hook disposed on the crane. For the specific structure of the crane, please refer to the prior art, which will not be described in detail here.

[0040] Optionally, an upper fixed seat 12 is provided on the hook, and several lower fixed seats 10 are arranged in an array on the top surface of the lifting device body 1. Each lower fixed seat 10 is connected to the outer periphery of the upper fixed seat 12 through a lifting ring 11. The upper fixed seat 12 is hinged to the upper end of the lifting ring 11, and the lower fixed seat 10 is hinged to the lower end of the lifting ring 11. The upper fixed seat 12 can be compatible with various types of hooks to expand the applicability of the overall lifting device.

[0041] It should be noted that the above-mentioned hoisting device can also be applied to the hoisting of other cylindrical components in a high-altitude vertical state, and can also be applied to the hoisting of large objects in other places where it is inconvenient for people to climb under similar structural forms. It is not limited to the hoisting of arrow bodies in a vertical state.

[0042] In summary, the entire locking process of the rocket body 6 is simple to operate, requires no manual intervention, is safer, and does not require a large operating space. It can meet the requirements for hoisting the rocket body 6 in harsh outdoor environments, effectively shorten the locking time of the rocket body 6, and improve the locking efficiency of the rocket body 6.

[0043] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0044] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A locking mechanism for a vertical status missile, characterized by, The utility model relates to a lifting device for rocket, which comprises: a lifting device body, the bottom surface of the lifting device body is provided with a conical guide plate, and the bottom surface of the lifting device body is arrayed with a plurality of automatic retraction assemblies; the automatic retraction assembly comprises an assembly frame arranged on the bottom surface of the lifting device body, a load bearing pin is slidingly arranged on the assembly frame, and the load bearing pin in each automatic retraction assembly can be driven to reciprocate along the radial direction of the lifting device body so as to insert or withdraw from the butt joint groove on the inner circumferential surface of the rocket body.

2. A locking mechanism for a vertical stage missile body as defined in claim 1 wherein, a first driving motor is arranged on the top surface of the lifting device body, a driving gear is arranged on the output end of the first driving motor, the upper end of the conical guide plate is rotatably connected to the lifting device body through a rotary bearing, an annular rack is arranged on the inner circumferential side of the rotary bearing, and the annular rack is meshingly connected with the driving gear.

3. A locking mechanism for a vertical stage missile body as defined in claim 1 wherein, a plurality of horizontal adjustment assemblies are arrayed on the bottom surface of the lifting device body, the horizontal adjustment assembly comprises a mounting frame, the lower end of the mounting frame is rotatably connected to a rotating shaft, a second driving motor is arranged on the lower end of the mounting frame, the output end of the second driving motor is connected to the rotating shaft, the rotating shaft is connected to a first telescopic push rod, and the lower end of the first telescopic push rod is provided with a top plate.

4. The locking mechanism for a vertical stage missile body of claim 1 wherein, the assembly frame comprises a first vertical baffle and a second vertical baffle arranged on the bottom surface of the lifting device body, and the first vertical baffle and the second vertical baffle are connected to the lifting device body through a plurality of bolts.

5. A locking mechanism for a vertical stage missile body as defined in claim 4 wherein, a plurality of horizontal limiting baffles are arranged between the first vertical baffle and the second vertical baffle, the horizontal limiting baffles are combined to form a guide hole, and the guide hole is slidingly connected to the load bearing pin.

6. A locking mechanism for a vertical stage missile body as defined in claim 5 wherein, a second telescopic push rod is arranged on the bottom surface of the lifting device body, and the telescopic end of the second telescopic push rod is connected to the load bearing pin.

7. A locking mechanism for a vertical stage missile body as defined in claim 6 wherein, when the inner side surface of the conical guide plate abuts against the edge position of the top surface of the rocket body, and the second telescopic push rod is in the retracted state, the load bearing pin is located on the inner side of the rocket body.

8. A locking mechanism for a vertical stage missile according to any one of claims 5-7, characterized in that, the end surface of the end of the load bearing pin away from the center of the lifting device body is chamfered.

9. A hoisting device comprising a locking mechanism for a vertically positioned arrow body according to any one of claims 1 to 8, characterized in that a crane and a lifting hook arranged on the crane are further included.

10. A hoisting device according to claim 9, characterised in that an upper fixing seat is arranged on the lifting hook, a plurality of lower fixing seats are arrayed on the top surface of the lifting device body, and the outer circumferential surface of each lower fixing seat is connected to the lower fixing seat through a lifting ring.

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