Anti-falling locking device for fire shell box

Abstract

The utility model provides an anti-falling locking device for a fire shell box. The lock sleeve is fixedly connected to the ammunition box cover, the lock seat is fixedly connected to the ammunition box body, the lock shaft penetrates through the partition wall and is installed on the lock seat in a translation and rotation mode, and a locking clamping groove is formed between a stop part in a first compartment of the lock seat and the partition wall. The spring is sleeved on the lock shaft in the second compartment, and a handle fixedly connected to the lock shaft in the first compartment drives the lock shaft to rotate and translate under the action of external force. When the lock shaft is at the locking position, the lock head is jointed with the stop part of the lock sleeve, and the handle is clamped in the locking clamping groove of the lock seat under the tension of the spring. By means of the locking device, when the bullet box conducts high-low pitching and azimuth rotation movement along with an artillery in the using process and the shooting process, the handle is difficult to leave from the locking clamping groove of the lock seat under the impact in the movement process and the vibration in the shooting process, the lock head of the lock shaft is difficult to be separated from the lock sleeve, the locking device can be prevented from being unlocked, and the safety of the bullet box is improved. And the reliability and the safety of locking the ammunition box are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of artillery ammunition box locking, and particularly relates to an anti-dropping locking device for an artillery ammunition box. Background Art

[0002] The locking device used on artillery ammunition boxes must ensure a reliable connection under the impact of the ammunition box's accelerated movement during elevation, pitch, and azimuth rotation, as well as the vibration during firing at various angles. Existing thin-walled parts are connected by traditional hasp locks and latch-type locking devices. Traditional hasp locks are prone to deformation or breakage due to uneven force on the lock tongue after being subjected to impact and vibration in various directions, resulting in the device losing its locking function. Figure 8 As shown, the existing latch-type locking device is suitable for the case where the two connecting parts are in the same plane, that is, the U-shaped groove locking arrangement. Under the rapid rotation movement and shooting vibration of the artillery, the latch is very easy to fall out. In addition, if the two connecting parts are arranged at a certain angle, the latch-type locking device cannot achieve an effective and reliable locking function. Utility Model Content

[0003] The purpose of the utility model is to solve the problem in the prior art that the locking device for connecting thin-walled parts cannot effectively meet the need for reliable connection when locking an artillery ammunition box under the impact during elevation and azimuth rotation and the vibration during shooting, and to provide an anti-slip locking device for an artillery ammunition box. The device is a new type of pin-type locking device that can meet the need for reliable connection of the ammunition box under limited space and impact and directional vibration conditions.

[0004] To achieve the above objectives, the technical solutions provided by this utility model are:

[0005] The utility model provides an anti-dropout locking device for an artillery ammunition box, the ammunition box comprising a box body and a box cover for closing the box body, the anti-dropout locking device comprising a lock sleeve, a lock seat, a lock shaft, a spring and a handle;

[0006] The lock sleeve is used to be fixed to the cover of the ammunition box, and is provided with a stop portion inside that cooperates with the lock shaft;

[0007] The lock base is used to be fixedly connected to the body of the ammunition box, and the inner cavity is divided into a first compartment and a second compartment by a partition wall. When the box lid is closed, the second compartment is closer to the lock sleeve than the first compartment. The lock shaft passes through the partition wall and is installed to the lock base in a translationally and rotatable manner. The lock base is provided with a stopper that cooperates with the handle in the first compartment. The stopper forms a channel with the side wall of the lock base and a locking groove with the partition wall.

[0008] The spring is sleeved on the lock shaft in the second compartment of the lock seat, and its two ends are respectively connected to the partition wall of the lock seat and the step surface of the lock shaft;

[0009] The handle is used to drive the lock shaft to rotate and translate under the action of an external force, and is fixed to the lock shaft in the first compartment of the lock base. The handle can translate in the channel of the lock base and can be restricted by the locking groove of the lock base to rotate and translate under the action of a spring;

[0010] The lock shaft can move between a locked position locked with the lock sleeve and a released position released from the lock sleeve under the action of the spring; in the released position, the lock head of the lock shaft leaves the lock sleeve; in the locked position, the lock head of the lock shaft enters the lock sleeve and engages with the stop portion of the lock sleeve, and the handle is clamped in the locking groove of the lock seat under the tension of the spring, thereby locking the lock shaft and the lock sleeve.

[0011] Furthermore, two symmetrical fan-shaped protrusions protruding radially inward are provided in the center hole of the lock sleeve, and the lock head of the lock shaft is provided with two symmetrical fan-shaped bosses protruding radially outward. The lock head of the lock shaft can pass through the middle of the fan-shaped protrusions of the lock sleeve in an offset manner, and after passing through, it rotates and fits with the fan-shaped protrusions to achieve locking of the lock shaft and the lock sleeve.

[0012] Furthermore, a release recess is provided on the side of the stop portion of the lock seat facing away from the locking slot in the axial direction, for locking the handle when the lock shaft is in the release position.

[0013] Furthermore, in the release position of the lock shaft, the spring is in a compressed state; in the locking position of the lock shaft, the spring is in an extended state.

[0014] Furthermore, in both the unlocked position and the locked position of the lock shaft, the spring is completely located in the lock seat.

[0015] Furthermore, the lock sleeve is in the shape of a duck tongue, with a triangular tab at one end for connecting to the cover of the ammunition box, and a rectangular block at the other end for cooperating with the lock shaft.

[0016] Furthermore, the lock shaft is provided with a square shaft section for mounting a handle. One side of the handle is fixed by a cotter pin, and the other side abuts against the shoulder of the square shaft section, thereby realizing the connection between the handle and the lock shaft.

[0017] Furthermore, the handle includes a connecting column and a gripping rod. The connecting column is used to connect to the lock shaft, and a square hole is opened in the middle to match the square shaft section of the lock shaft. The gripping rod is used for the operator to grip to apply external force to the lock shaft.

[0018] The advantages of the utility model are:

[0019] 1. The present invention relates to an anti-disengagement locking device for an artillery ammunition box. The locking sleeve is fixed to the ammunition box cover. A locking shaft is installed in a lock seat fixed to the ammunition box body. The locking shaft is provided with a spring. The locking shaft can rotate and translate about the locking shaft axis under the external force of a handle. When the locking head of the locking shaft engages with a stop portion in the locking sleeve, the handle is firmly engaged in a locking groove provided on the lock seat under the tension of the spring, thereby preventing the locking shaft from automatically unlocking, thereby reliably locking the locking shaft and the locking sleeve. Therefore, when the locking device of the present invention is used to lock the artillery ammunition box, when the ammunition box is used, when the ammunition box moves in elevation and azimuth with the artillery and during firing, the handle is unlikely to move out of the locking groove of the lock seat due to the impact during movement and the vibration during firing. The locking head of the locking shaft is also unlikely to disengage from the locking sleeve, thereby preventing the locking device from being unlocked and improving the reliability and safety of the ammunition box locking.

[0020] 2. The lock seat and the lock sleeve in the locking device are fixedly connected to different connecting parts. By setting different angles between the two connecting surfaces in the lock sleeve, the limitations of the use of the locking device are overcome and it can be applied to the connection of locking parts at various angles.

[0021] 3. In the present invention, two fan-shaped protrusions are provided in the center hole of the lock sleeve, and the lock head of the lock shaft is provided with two fan-shaped bosses. The lock head can be offset and pass through one side of the fan-shaped protrusion and fit with the other side of the protrusion after passing through. This design can further meet the requirements of the locking device to reliably perform the locking function under the impact and vibration in all directions, ensure the normal operation of the ammunition box, and further ensure the success of the rapid lifting and shooting mission of the artillery.

[0022] 4. In the present invention, a release recess is provided on the side of the stop portion of the lock seat that is axially opposite to the locking slot. The release recess and the locking slot are on the same side of the lock seat. Compared with the case where the two are located on different sides of the lock seat at 180°, the rotation space of the handle is large, which effectively improves the space utilization rate of the locking device and makes the structure of the entire device compact and the appearance beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or other features and advantages of the present invention will become more easily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and in which some features are exaggerated or reduced to show details of specific components. In the accompanying drawings:

[0024] Figure 1 It is a schematic cross-sectional view of the anti-drop locking device for an artillery ammunition box of the present invention in a locked state;

[0025] Figure 2 This is a schematic three-dimensional diagram of the anti-loosening locking device for an artillery ammunition box of the present invention in a locked and loosened state during use;

[0026] Figure 3It is a schematic three-dimensional diagram of the lock sleeve in the utility model;

[0027] Figure 4 It is a schematic three-dimensional diagram of the lock seat in the utility model;

[0028] Figure 5 is a schematic cross-sectional view of the lock seat in the present utility model;

[0029] Figure 6 It is a schematic three-dimensional diagram of the locking shaft in the utility model;

[0030] Figure 7 It is a schematic three-dimensional diagram of the handle in the present utility model;

[0031] Figure 8 It is a schematic three-dimensional diagram of an existing latch-type locking device in a locked state during use.

[0032] In the picture:

[0033] 1-locking sleeve, 11-stop portion, 101-matching mounting surface 1, 102-matching mounting surface 2, 103-top surface, 104-hole surface, 105-locking surface;

[0034] 2-lock seat, 21-partition wall, 22-first compartment, 23-second compartment, 24-stop portion, 25-locking slot, 26-release recess, 201-small hole surface, 202-first large hole surface, 203-release side surface, 204-locking side surface, 205-locking top surface, 206-release top surface, 207-partition wall surface, 208-second large hole surface;

[0035] 3-lock shaft, 31-lock head, 301-sector-shaped locking surface, 302-step surface, 303-square shaft surface, 304-pin hole, 305-cylindrical surface, 306-sector-shaped boss surface;

[0036] 4-spring; 5-handle, 51-connecting column, 52-grasping rod, 501-square hole, 502-rotating surface; 6-cotter pin;

[0037] 100-ammunition box body, 200-ammunition box lid. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration and is not intended to limit the present invention.

[0039] It should be pointed out that, in the context of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0040] Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0041] The utility model provides an anti-detachment locking device for an artillery ammunition box, wherein the artillery ammunition box comprises a box body and a box cover for closing the box body. The locking device is used to reliably lock the box cover and the box body together to prevent the locking device from being unlocked and loosened due to the impact during the accelerated movement of the ammunition box in elevation, pitch and azimuth rotation with the artillery during use and the vibration during shooting at various angles, thereby ensuring that the ammunition box is reliably connected.

[0042] First, the overall reference Figure 1 and Figure 2 As an exemplary embodiment of the present invention, an anti-slip locking device for an artillery ammunition box includes a lock sleeve 1, a lock seat 2, a lock shaft 3, a spring 4 and a handle 5. The lock sleeve 1 is used to be fixedly connected to, in particular, welded to, the box cover 200 of the ammunition box. A stop portion 11 cooperating with the lock shaft 3 is provided inside the lock sleeve 1. The lock seat 2 is used to be fixedly connected to, in particular, welded to, the side plate of the box body 100 of the ammunition box. The lock shaft 3 is used to be installed on the lock seat 2 in a translationally and rotatably manner. Its lock head 31 cooperates with the stop portion 11 of the lock sleeve 1 to realize locking of the ammunition box by the locking device. The spring 4 can apply elastic force to the lock shaft 3. The handle 5 is used to drive the lock shaft 3 to rotate and translate around the axis of the lock shaft under the action of external force.

[0043] The lock shaft 3 can be locked in the locking position (such as Figure 1 As shown) and the release position (as shown) of the lock sleeve 1 Figure 2 As shown). Figure 2 In the release position shown, the lock head 31 of the lock shaft 3 leaves the lock sleeve 1. Figure 1 In the locking position shown, the locking head 31 of the lock shaft 3 enters the lock sleeve 1 and engages with the stop portion 11 of the lock sleeve 1, and the handle 5 is clamped in the locking groove 25 (to be described below) of the lock base 2 under the tension of the spring 4, thereby reliably locking the lock shaft 3 and the lock sleeve 1.

[0044] Combine Figure 3 The locking sleeve 1 can be a duck-tongue-shaped steel piece with a triangular tab extending from one end for connection to the ammunition box cover 200. The first and second mating surfaces 101 and 102 mate with the bottom and side surfaces of the cover 200, while the top surface 103 is flush with the top surface of the cover 200. The lock base and locking sleeve are fixedly attached to different connectors. The different angles between the two connecting surfaces in the locking sleeve overcome the limitations of the locking device and allow for connection of locking components at various angles. A U-shaped weight-reducing groove is located in the middle of the triangular tab to reduce the weight of the locking device and the ammunition box. The rectangular block at the other end of the locking sleeve 1 is designed to mate with the lock shaft 3. Two symmetrical sector-shaped protrusions protruding radially inward can be positioned within the central hole. The hole surface 104 serves as the passage for the lock head of the lock shaft 3. Two symmetrical sector-shaped locking surfaces 105 mate with the sector-shaped locking surfaces 301 of the lock shaft 3 to achieve locking.

[0045] Recombination Figure 4 and Figure 5 The lock base 2 can be a rectangular steel member as a whole. The inner cavity is divided by a partition wall 21 into a first compartment 22 and a second compartment 23. The two compartments can be cylindrical holes symmetrical about the partition wall 21. The aperture surfaces of the two compartments are respectively a first large aperture surface 202 and a second large aperture surface 208. When the lid is closed, the second compartment 23 is closer to the lock sleeve 1 than the first compartment 22. The lock shaft 3 passes through the partition wall 21 and is mounted to the lock base 2 in a manner that allows translation and rotation. The spring 4 is sleeved on the lock shaft 3 within the second compartment 23 of the lock base 2, with its ends respectively connected to the partition wall 21 of the lock base 2 and the stepped surface 302 of the lock shaft 3. The wall surface 207 of the partition wall 21 serves as one of the working surfaces of the spring 4. The handle 5 is fixedly connected to the lock shaft 3 within the first compartment 22 of the lock base 2.

[0046] The lock seat 2 is provided with a stopper 24 cooperating with the handle 5 in the first compartment 22. The stopper 24 can be an I-shaped seat body. A channel is formed between the stopper 24 and the side wall of the lock seat 2 and a locking slot 25 is formed between the stopper 24 and the partition wall 21. The handle 5 can translate in the channel of the lock seat 2. That is, the first large hole surface 202 of the channel is the rotating surface 502 of the handle 5 (in Figure 7 The handle 5 is restrained by the locking slot 25 of the lock base 2, preventing rotation and translation under the action of the spring 4. Specifically, the locking side surface 204 of the locking slot 25 prevents axial movement of the handle 5 under the action of the spring 4 when the locking device is locked, while the locking top surface 205 prevents reverse rotation of the handle 5 when the locking device is locked, thereby ensuring a secure and reliable locking function when the lock shaft is in the locked position.

[0047] In a preferred embodiment, to restrain the handle 5 and the lock shaft 3 in the released position, a release recess 26 is provided on the side of the stopper portion 24 of the lock base 2, axially facing away from the locking slot 25, for retaining the handle 5 when the lock shaft 3 is in the released position. The release side surface 203 of the release recess 26 prevents the handle 5 from moving under the action of the spring 4, while the release top surface 206 prevents the handle 5 from rotating and potentially causing the lock shaft 3 to be ejected, thereby improving the ease of use and safety of the locking device and the magazine. Arranging the handle release recess and the locking slot on the same side of the lock base provides more room for the handle to rotate, compared to arrangements where the two are located 180° apart on different sides of the lock base. This effectively improves the space utilization of the locking device, resulting in a compact structure and an attractive appearance.

[0048] Combine Figure 6 The lock shaft 3 can be constructed entirely of stepped steel. The step surface 302 extends and retracts the lock head by compressing and releasing the spring 4. The lock shaft 3 includes a square shaft section for mounting the handle 5. Its square shaft surface 303 mates with the square hole 501 of the handle 5, securing the handle 5. One side of the handle 5 is secured by a cotter pin 6, which passes through a side pin hole 304 and abuts against a shoulder on the square shaft section on the other side, thus connecting the handle 5 to the lock shaft 3.

[0049] Optionally, a lock head 31 at one end of the lock shaft 3 is provided with two symmetrical sector-shaped bosses protruding radially outward. The lock head 31 of the lock shaft 3 can be offset and passed through the center of the sector-shaped boss of the lock sleeve 1. After passing through, it rotates to circumferentially align with the sector-shaped boss to achieve locking of the lock shaft 3 and the lock sleeve 1. The cylindrical surface 305 of the lock shaft 3 and the sector-shaped boss surface 306 of the sector-shaped boss can rotate within the second large hole surface 208 of the lock base 2. The sector-shaped locking surface 301 cooperates with the locking surface 105 of the lock sleeve 1 to achieve locking and release of the locking device.

[0050] Combine Figure 7 The handle 5 includes a connecting column 51 and a gripping rod 52. The connecting column 51 is used to connect to the lock shaft 3, and a square hole 501 is opened in the middle to match the square shaft section of the lock shaft 3. The gripping rod 52 is a rectangular parallelepiped with chamfered edges, which is used for the operator to grip to apply external force to the lock shaft 3.

[0051] In a specific embodiment of the present invention, when the lock shaft 3 is in the unlocked position, that is, when the handle 5 is parallel to the side plate of the ammunition box body and is inserted into the unlocking recess, the spring 4 is in a compressed state; when the lock shaft 3 is in the locked position, the spring 4 is in an extended state. With this design, when the locking device is changed from the unlocked position to the locked position, the handle 5 is rotated to disengage it from the unlocking recess of the lock seat 2. When the handle 5 is rotated to be perpendicular to the side plate of the ammunition box body, the handle 5 is pushed along the axial direction of the lock shaft 3 close to the lock sleeve 1. At this time, the spring 4 will automatically change from the compressed state to the natural state. The lock shaft 3 is restored to its original length by the restoring force of the spring 4. The external force required to move the handle 5 becomes smaller, making it easier to operate. The lock head 31 of the lock shaft 3 will pass through the large lock seat 2. The hole surface 208 axially enters the lock sleeve 1 and engages with the stop portion 11, specifically passing through the hole surface 104 of the lock sleeve 1 between the two sector-shaped protrusions. When the sector-shaped locking surface 301 of the lock shaft 3 is pushed to the locking surface 105, the handle 5 is rotated in the opposite direction so that it is parallel to the magazine side plate and placed in the locking groove 25. At this time, the sector-shaped locking surface 301 of the lock shaft 3 is in contact with the locking surface 105 of the lock sleeve 1. The lock shaft 3 and the lock sleeve 1 are locked, and the locking device is in a locked state. In this state, the handle 5 is in contact with the locking side surface 204 of the lock shaft 3 in the axial direction and with the locking top surface 205 in the circumferential direction. The spring 4 is in an extended state. In other words, the lock shaft 3 is axially pulled away from the lock sleeve 1 by the tension of the spring 4 to restore its original length. Therefore, the handle 5 cannot automatically move axially away from the locking side surface 204 toward the lock sleeve 1. When the ammunition box is in use with the locking device locked, even if the ammunition box is subjected to impact as the gun performs elevation and azimuth rotation movements and is subjected to vibration during shooting, it is difficult for the handle to overcome the elastic force of the spring 4 and leave the locking side surface 204, and it is also impossible to leave the locking top surface 205 and leave the slot. Then the handle cannot rotate around the axis of the lock shaft, and the lock head of the lock shaft will not rotate relative to the stop portion 11 of the lock sleeve 1. As a result, the lock head remains engaged with the stop portion 11 and is difficult to disengage from the lock sleeve. The locking device ensures that it can reliably and safely perform its locking function.

[0052] When the locking device changes from the locked position to the released position, the handle 5 is rotated to leave the locking slot 25. When the handle 5 is perpendicular to the side plate of the ammunition box, the handle 5 is pushed axially away from the lock sleeve 1 along the lock shaft 3. At this time, the spring 4 will automatically change from the extended state to the natural state. The lock shaft 3 is restored to its original length by the restoring force of the spring 4. The external force required for the movement of the handle 5 becomes smaller, and it is easy to operate. The lock head 31 of the lock shaft 3 moves axially along the inner hole surface 208 of the lock seat 2. When the handle 5 moves to the position of the release recess 26 of the lock seat 2, the handle 5 is rotated in the opposite direction to make it parallel to the side plate of the ammunition box and placed in the release recess 26. At this time, the handle surface of the handle 5 is in contact with the release side surface 203 and the release top surface 206 of the lock seat 2. At this time, the lock shaft is locked in the release state.

[0053] It should be understood that the installation and use of the spring are not limited to the above-mentioned methods. For example, the spring can be in the original length state when the locking device is locked, and the present invention does not specifically limit this.

[0054] Furthermore, in both the unlocking position and the locking position of the lock shaft 3, the spring 4 is completely located in the lock seat 2. This structure allows the spring to remain in the lock seat, preventing the spring from being corroded and becoming loose and ineffective in outdoor use environments such as rain.

[0055] Next, the installation process of the anti-drop locking device for the artillery shell box provided by the utility model is described:

[0056] Step S1: Insert the lock sleeve 1 into the slot on the side panel of the ammunition box (the slot on the side panel is slightly wider than the width of the lock sleeve 1), and fix the first and second mating mounting surfaces 101 and 102 of the lock sleeve 1 to the mating surfaces on the ammunition box cover 200;

[0057] Step S2, installing the spring 4 into the second compartment 23 of the lock base 2;

[0058] Step S3: insert the small end of the lock shaft 3, i.e., one end of the mounting handle, through the spring 4 and the partition wall 21 of the lock base 2 into the first compartment 22;

[0059] Step S4, installing the handle 5 to the lock shaft 3: Adjust the direction of the handle 5 so that the sector-shaped locking surface 301 on the lock head 31 of the lock shaft 3 is aligned with the locking surface 105 of the lock sleeve 1 in the circumferential direction. The handle 5 can be placed in the release recess 26 of the lock base 2. The square hole 501 of the handle 5 is passed through the square axial surface 303 on the lock shaft 3. The cotter pin 6 is installed in the pin hole 504 of the handle 5 for axial positioning.

[0060] Step S5 , after adjusting the direction of the handle 5 so that it is located at the release recess 26 , the lock base 2 is fixed to the ammunition box body 100 .

[0061] Therefore, as described above, when the locking device of the present invention is used to lock the artillery ammunition box, when the ammunition box performs elevation and azimuth rotation movements with the artillery during use and during shooting, the handle is difficult to move away from the locking slot of the lock seat due to the impact during movement and the vibration during shooting, and the locking head of the lock shaft is also difficult to disengage from the lock sleeve, which can prevent the locking device from being unlocked and improve the reliability and safety of the ammunition box locking.

[0062] Finally, it should be noted that the features mentioned and / or illustrated in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, and may be combined with or replace the features of other embodiments. The technical solutions obtained by such combination or replacement shall also be deemed to be included in the scope of protection of the present invention.

Claims

1. An anti-drop locking device for an artillery ammunition box, the ammunition box comprising a box body and a box cover for closing the box body, characterized in that: The anti-drop locking device includes a lock sleeve, a lock seat, a lock shaft, a spring and a handle; The lock sleeve is used to be fixedly connected to the cover of the ammunition box, and is provided with a stop portion inside that cooperates with the lock shaft; The lock base is used to be fixedly connected to the box body of the ammunition box, and the inner cavity is divided into a first compartment and a second compartment by a partition wall. When the box cover is closed, the second compartment is closer to the lock sleeve than the first compartment. The lock shaft passes through the partition wall and is installed on the lock base in a translationally and rotatable manner. The lock base is provided with a stopper that cooperates with the handle in the first compartment. A channel is formed between the stopper and the side wall of the lock base, and a locking groove is formed between the stopper and the partition wall. The spring is sleeved on the lock shaft in the second compartment of the lock seat, and its two ends are respectively connected to the partition wall of the lock seat and the step surface of the lock shaft; The handle is used to drive the lock shaft to rotate and translate under the action of an external force, and is fixed to the lock shaft in the first compartment of the lock base. The handle can translate in the channel of the lock base and can be restricted by the locking groove of the lock base to rotate and translate under the action of a spring; The lock shaft can move between a locked position locked with the lock sleeve and a released position released from the lock sleeve under the action of the spring; in the released position, the lock head of the lock shaft leaves the lock sleeve; in the locked position, the lock head of the lock shaft enters the lock sleeve and engages with the stop portion of the lock sleeve, and the handle is clamped in the locking groove of the lock seat under the tension of the spring, thereby locking the lock shaft and the lock sleeve.

2. The anti-drop locking device for an artillery ammunition box according to claim 1, characterized in that: Two symmetrical fan-shaped protrusions protruding radially inward are provided in the center hole of the lock sleeve, and the lock head of the lock shaft is provided with two symmetrical fan-shaped bosses protruding radially outward. The lock head of the lock shaft can pass through the middle of the fan-shaped protrusions of the lock sleeve in an offset manner, and after passing through, it rotates and fits with the fan-shaped protrusions to achieve locking of the lock shaft and the lock sleeve.

3. The anti-drop locking device for an artillery ammunition box according to claim 1 or 2, characterized in that: The stop portion of the lock seat is provided with a release recess on one side facing away from the locking slot in the axial direction, for locking the handle when the lock shaft is in the release position.

4. The anti-drop locking device for an artillery shell box according to claim 3, characterized in that: When the lock shaft is in the released position, the spring is in a compressed state; when the lock shaft is in the locked position, the spring is in an extended state.

5. The anti-drop locking device for an artillery ammunition box according to claim 4, characterized in that: In the unlocking position and the locking position of the lock shaft, the spring is completely located in the lock seat.

6. The anti-drop locking device for an artillery ammunition box according to claim 1 or 2, characterized in that: The lock sleeve is in the shape of a duck tongue, with a triangular tab at one end for connecting to the cover of the ammunition box, and a rectangular block at the other end for cooperating with the lock shaft.

7. The anti-drop locking device for an artillery shell box according to claim 1 or 2, characterized in that: The lock shaft is provided with a square shaft section for mounting the handle. One side of the handle is fixed by a cotter pin, and the other side abuts against the shoulder of the square shaft section, thereby realizing the connection between the handle and the lock shaft.

8. The anti-drop locking device for an artillery ammunition box according to claim 7, characterized in that: The handle includes a connecting column and a gripping rod. The connecting column is used to connect to the lock shaft, and a square hole is opened in the middle to match the square shaft section of the lock shaft. The gripping rod is used for the operator to grip to apply external force to the lock shaft.

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