Shell delivery assist device

Abstract

The embodiment of the present application provides a kind of cannonball conveying power assisting device, cannonball conveying power assisting device includes support, conveying mechanism, jacking mechanism and buffer mechanism, conveying mechanism is used to convey cannonball, conveying mechanism is hingedly connected on support, conveying mechanism can selectively rotate relative to support, conveying mechanism includes the first part and the second part connected, first part and second part are located at the two sides of support respectively, jacking mechanism is connected to first part, buffer mechanism is connected to second part, buffer mechanism is used to form buffer to cannonball, first part constitutes the feeding position of cannonball, second part constitutes the discharge position of cannonball, when conveying mechanism is in unfolded state, jacking mechanism drives first part to rise, synchronously drives second part to drop, to convey cannonball to second part located in first part, realize the conveying of cannonball.The technical scheme of the present application can more conveniently realize the conveying of cannonball.

Description

Technical Field

[0001] This application relates to the field of mechanical technology, and in particular to a projectile delivery assist device. Background Technology

[0002] Modern artillery consists of a barrel and a carriage. The barrel comprises the breech, breech, breechblock, and muzzle device. During live-fire exercises or warfare, the shell and propellant cartridge case must be fed to the loader at the breech before being loaded into the barrel and fired. While modern artillery uses automated loading mechanisms, the intense primer fire from firing means the shell and cartridge case are often far from the loading position, requiring manual transport over considerable distances. Given the weight of the shells (approximately 25 kg for howitzer shells and 35 kg for armored howitzer shells), manual loading necessitates continuous handling of the unpacked shells. This leads to fatigue among operators after a period of time, especially at high altitudes with low oxygen levels, resulting in slower loading speeds and ultimately weakened firepower. If an electromechanical system is used to transport ammunition, there are three main practical difficulties: First, power supply is extremely difficult in the field environment; second, the maintenance of electromechanical equipment is difficult; and third, the rapid deployment and withdrawal of electromechanical equipment under combat conditions is difficult.

[0003] Artillery operations have always been known for their high intensity and scale. To improve the combat readiness of artillery, it is necessary to emphasize the characteristics of rapid attack and withdrawal. However, due to the large weight of various types of artillery ammunition, the ammunition transport has become an obstacle to the rapid attack and withdrawal of artillery.

[0004] It can be said that the inability of modern artillery operations to solve the problem of ammunition delivery during live-fire exercises will greatly affect the artillery's rapid-fire and rapid-withdrawal tactics and reduce the artillery's survival probability. Summary of the Invention

[0005] This application provides a shell conveying assist device, which includes a support, a conveying mechanism, a lifting mechanism, and a buffer mechanism. The conveying mechanism is used to convey shells and is hinged to the support. The conveying mechanism can selectively rotate relative to the support. The conveying mechanism includes a first part and a second part connected to each other, which are located on opposite sides of the support. The lifting mechanism is connected to the first part, and the buffer mechanism is connected to the second part. The buffer mechanism is used to buffer the shells. The first part constitutes the shell loading position, and the second part constitutes the shell unloading position. When the conveying mechanism is in the deployed state, the lifting mechanism drives the first part to rise and simultaneously drives the second part to fall, so as to convey the shells located in the first part to the second part, thereby realizing the conveying of shells.

[0006] In some embodiments, the conveying mechanism is a telescopic mechanism that can selectively extend and retract relative to the support. The conveying mechanism includes a first hinge assembly and a second hinge assembly, which are spaced apart on both sides of the support. The first hinge assembly includes a plurality of cross-hinged movable rods, and the second hinge assembly includes a plurality of cross-hinged movable rods. The plurality of cross-hinged movable rods retract with each other to achieve folding of the shell conveying assist device.

[0007] In other embodiments, the conveying mechanism further includes a plurality of central connecting rods and a plurality of end connecting rods, the central connecting rods and the end connecting rods being connected between the first hinge assembly and the second hinge assembly, one of the central connecting rods being connected at the hinge point of the cross-hinged movable rod, and the other end connecting rods being connected to the ends of the movable rod respectively. The conveying mechanism further includes a plurality of sets of bearing assemblies, the bearing assemblies being selectively folded and connected between adjacent end connecting rods.

[0008] In some other embodiments, the load-bearing component includes a first anti-fall plate, a second anti-fall plate, a hinge, a first sleeve portion, and a second sleeve portion. The hinge is movably connected between the first anti-fall plate and the second anti-fall plate. The first sleeve portion is fixedly connected to the side of the first anti-fall plate away from the hinge. The second sleeve portion is fixedly connected to the side of the second anti-fall plate away from the hinge. The first sleeve portion and the second sleeve portion are respectively sleeved on two adjacent end connecting rods.

[0009] In some other embodiments, the shell transport assist device further includes an anti-fall guardrail unit, which includes an inner anti-fall guardrail unit, an outer anti-fall guardrail unit, a connecting locking pin, and an anti-fall guardrail unit bearing. The upper parts of the inner and outer anti-fall guardrail units are hinged by the connecting locking pin and embedded in the anti-fall guardrail unit bearing. The lower parts of the inner and outer anti-fall guardrail units are connected by the end connecting rod. When the transport mechanism is deployed, it drives the anti-fall guardrail units to deploy simultaneously.

[0010] In some other embodiments, the buffer mechanism includes a buffer baffle, a first connecting beam, a second connecting beam, and a buffer mechanism bearing. The buffer baffle is movably connected to the first connecting beam by embedding the buffer mechanism bearing. The buffer baffle has a guide groove, and the second connecting beam can selectively slide back and forth in the guide groove. The buffer baffle is used to prevent the ammunition box from falling and colliding. The first connecting beam is located above the ammunition delivery assist device relative to the second connecting beam. Both the first connecting beam and the second connecting beam are end connecting rods.

[0011] In some other embodiments, the buffer baffle has a through clearance area on the side away from the conveying mechanism, the clearance area being used for a portion of the conveying mechanism to extend out.

[0012] In some other embodiments, the support includes an A-shaped first frame and a second frame, which are spaced apart on both sides of the conveying mechanism and are movably connected to the same central connecting rod.

[0013] In some other embodiments, the distance between the support and the lifting mechanism is greater than the distance between the support and the buffer mechanism.

[0014] In some other embodiments, the lifting mechanism includes a connecting frame and a force-applying part. The connecting frame is U-shaped, and the force-applying part is connected to the side of the connecting frame away from the opening. The opposite ends of the connecting frame are hinged to the same end connecting rod. The force-applying part is used to connect with a power mechanism to control the first part to rise or fall.

[0015] The shell transport assist device provided in this application embodiment controls the first part of the transport mechanism to rise through a lifting mechanism, while simultaneously causing the second part of the transport mechanism to fall. This allows the shell located in the first part of the transport mechanism to slide to the second part of the transport mechanism under the action of gravity, thereby facilitating the transport of the shell. Attached Figure Description

[0016] To more clearly illustrate the structural features and effects of this application, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the shell delivery assistance device provided in an embodiment of this application from one perspective;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the shell delivery assistance device provided in the embodiments of this application from another perspective;

[0019] Figure 3 yes Figure 1 A partial structural diagram of the conveying mechanism of the provided shell delivery assist device;

[0020] Figure 4 yes Figure 1 A partial structural diagram of the load-bearing components of the provided shell delivery assist device;

[0021] Figure 5 yes Figure 1 A partial structural diagram of the buffer mechanism of the provided shell delivery assist device;

[0022] Figure 6 yes Figure 1 A force diagram of the provided shell delivery assist device;

[0023] Figure 7 yes Figure 1 A schematic diagram of the stress on the middle section of the support beam of the provided shell delivery assist device;

[0024] Figure 8 yes Figure 1 A schematic diagram of the stress on the edge section of the support beam of the provided shell delivery assist device;

[0025] Figure 9 yes Figure 1 A specific embodiment of the force diagram of the edge section of the support beam of the provided shell delivery assist device. Specific Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this application.

[0027] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This application provides a shell conveying assist device 1, which includes a support 10, a conveying mechanism 20, a lifting mechanism 30, and a buffer mechanism 40. The conveying mechanism 20 is used to convey shells and is hinged to the support 10. The conveying mechanism 20 can selectively rotate relative to the support 10. The conveying mechanism 20 includes a first part 201 and a second part 202 connected to each other. The first part 201 and the second part 202 are respectively located on both sides of the support 10. The lifting mechanism 30 is connected to the first part 201, and the buffer mechanism 40 is connected to the second part 202. The buffer mechanism 40 is used to buffer the shells. The first part 201 constitutes the shell loading position, and the second part 202 constitutes the shell unloading position. When the conveying mechanism 20 is in the deployed state, the lifting mechanism 30 drives the first part 201 to rise and simultaneously drives the second part 202 to fall, so as to convey the shells located in the first part 201 to the second part 202, thereby realizing the conveying of shells.

[0028] The support frame 10 forms the fulcrum of the shell transport assist device 1, allowing the first part 201 and the second part 202 of the transport mechanism 20 to rotate relative to each other around the support frame 10, thereby realizing the transport of shells under the action of gravity. The middle part of the transport mechanism 20 is hinged to the support frame 10, which divides the transport mechanism 20 into the first part 201 and the second part 202. The first part 201 and the second part 202 can rotate at a certain angle with the support frame 10 as the fulcrum. The lifting mechanism 30 is connected to the first part 201 to provide lifting force to the first part 201, so that the height of the first part 201 is higher than the height of the second part 202, thereby transporting the shell located in the first part 201 to the second part 202 under the action of gravity. The buffer mechanism 40 is connected to the second part 202 to buffer the shells transported to the second part 202 and prevent the shells from impacting.

[0029] During live-fire artillery exercises or actual combat, the loading position behind the artillery piece is used as the placement location for the buffer mechanism 40. The positions of the support 10 and the lifting mechanism 30 are then determined. The conveying mechanism 20 is fully deployed, and the load-bearing component 23 and the anti-fall guardrail unit 50 are deployed accordingly. Shells and cartridge cases with fuse heads can be placed around the lifting mechanism 30, and the shells and cartridge cases are placed inside the ammunition box. The jacks are quickly adjusted to lift one end of the lifting mechanism 30, and the movement of the conveying mechanism 20 transports the shells and cartridge cases from the ammunition box to the position of the buffer mechanism 40. The conveying mechanism 20 is both telescopic and foldable.

[0030] The lifting mechanism 30 includes a jack connector body 301, a jack connecting beam 302, and a jack connector bearing 303. The jack connector body 301 is suspended from the left end of the conveying mechanism 20 via the jack connecting beam 302. By embedding the jack connector bearing 303, it ensures that the jack always maintains a vertical lifting position. The jack connector body 301 is also the connecting frame 31.

[0031] The shell transport assist device 1 provided in this application embodiment controls the first part 201 of the transport mechanism 20 to rise through the lifting mechanism 30, while simultaneously causing the second part 202 of the transport mechanism 20 to fall. This allows the shell located at the first part 201 of the transport mechanism 20 to slide to the second part 202 of the transport mechanism 20 under the influence of gravity, thus facilitating shell transport. Furthermore, the length of the transport mechanism 20 is adjustable, as are the distances between the first part 201, the second part 202, and the fulcrum of the support 10, thereby utilizing the lever principle to achieve a labor-saving effect.

[0032] In some embodiments, the conveying mechanism 20 is a telescopic mechanism that can selectively extend and retract relative to the support 10. The conveying mechanism 20 includes a first hinge assembly 21 and a second hinge assembly 22, which are spaced apart on both sides of the support 10. The first hinge assembly 21 includes a plurality of cross-hinged movable rods T, and the second hinge assembly 22 includes a plurality of cross-hinged movable rods T. The plurality of cross-hinged movable rods T retract with each other to achieve the folding of the shell conveying assist device 1.

[0033] Specifically, the conveying mechanism 20 adopts a telescopic and foldable hinge mechanism. The first part 201 and the second part 202 of the conveying mechanism 20 can be extended and shortened relative to the support 10. The first hinge component 21 and the second hinge component 22 of the conveying mechanism 20 are located on both sides of the support 10 and form a conveying channel for the shell. The first hinge component 21 and the second hinge component 22 have the same structure, both including several movable rods T that are cross-hinged. The several movable rods T cross to form an X shape and can rotate around the intersection point, thereby realizing the extension and shortening of the conveying mechanism 20, and thus realizing the displacement of the shell.

[0034] In other embodiments, the conveying mechanism 20 further includes a plurality of central connecting rods M and a plurality of end connecting rods N, the central connecting rods M and the end connecting rods N being connected between the first hinge assembly 21 and the second hinge assembly 22, one of the central connecting rods M being connected at the hinge point of the cross-hinged movable rod T, and the other end connecting rods N being connected to the ends of the movable rod T respectively. The conveying mechanism 20 further includes a plurality of sets of bearing assemblies 23, the bearing assemblies 23 being selectively folded and connected between adjacent end connecting rods N.

[0035] Specifically, the central connecting rod M connects between the first hinge assembly 21 and the second hinge assembly 22, and is connected to the hinge point of the cross-hinged movable rod T. The end connecting rods N connect between the first hinge assembly 21 and the second hinge assembly 22, and are connected to the end of the movable rod T. One central connecting rod M corresponds to four end connecting rods N. The carrying assembly 23 can be selectively folded and connected between adjacent end connecting rods N to carry the shells rolling on the conveying mechanism 20. When folded, the carrying assembly 23 can form a V-shape, facilitating the folding and storage of the conveying mechanism 20; when unfolded, the carrying assembly 23 can form a straight line, facilitating the transport of shells from one position to another on the conveying mechanism 20.

[0036] In some other embodiments, the supporting component 23 includes a first anti-fall plate 231, a second anti-fall plate 232, a hinge 233, a first sleeve portion 234, and a second sleeve portion 235. The hinge 233 is movably connected between the first anti-fall plate 231 and the second anti-fall plate 232. The first sleeve portion 234 is fixedly connected to the side of the first anti-fall plate 231 away from the hinge 233. The second sleeve portion 235 is fixedly connected to the side of the second anti-fall plate 232 away from the hinge 233. The first sleeve portion 234 and the second sleeve portion 235 are respectively sleeved on two adjacent end connecting rods N.

[0037] Specifically, the hinge 233 is movably connected between the first anti-fall plate 231 and the second anti-fall plate 232. The first anti-fall plate 231 and the second anti-fall plate 232 can be folded into a V-shape or unfolded into a straight line. The first sleeve portion 234 includes two sleeves spaced apart, and the second sleeve portion 235 includes two sleeves spaced apart. The first sleeve portion 234 is sleeved on one of the end connecting rods N, and the second sleeve portion 235 is sleeved on another end connecting rod N adjacent to the first end connecting rod N. The first sleeve portion 234 and the second sleeve portion 235 can achieve a limiting function to prevent the bearing component 23 from sliding on the end connecting rod N.

[0038] The specific working process of the whole machine includes: placing one end of the buffer mechanism 40 of the shell conveying assist device 1 at the shell loading and propellant loading position of the artillery, and two people working together to quickly unfold the conveying mechanism 20. At this time, the first anti-fall plate 231 and the second anti-fall plate 232 are naturally unfolded by the action of the hinge 233, the bearing component 23 is naturally extended, the bracket 10 is erected and fixed, the bottom end of the jack connector body 301 is connected to the small jack, the ammunition box loaded with shells and propellant cartridges is placed at one end of the lifting mechanism 30, and the jack is quickly adjusted to lift one end of the lifting mechanism 30 of the shell conveying assist device 1. The ammunition box is sent to the destination by the gravitational potential energy and the rolling of the load-bearing beam, and is received by the buffer mechanism 40. The personnel at the destination end unload the ammunition and quickly load the shells and propellant.

[0039] After the shooting mission is completed, the personnel at both ends quickly close the conveyor mechanism 20. At this time, the first anti-fall plate 231 and the second anti-fall plate 232 are naturally closed by the action of the hinge 233, and the bearing component 23 naturally retracts, which can be quickly withdrawn, realizing free retraction and extension.

[0040] The beneficial effects of this application include: ① This application can be placed at any position within a certain range behind the artillery for transporting shells, cartridge cases, and ammunition boxes, which can effectively reduce unnecessary physical exertion of the gunner during live-fire shooting or combat; ② When the conveying mechanism 20 of this application is opened, the hinge 233 drives the first anti-fall plate 231 and the second anti-fall plate 232 to unfold naturally, and when it is retracted, the hinge 233 drives the first anti-fall plate 231 and the second anti-fall plate 232 to close naturally, which can greatly improve the speed of rapid deployment and retraction, thereby significantly improving the level of rapid attack and withdrawal; ③ The conveying mechanism 20, the first anti-fall plate 231, and the second anti-fall plate 232 of this application can all have corresponding modules added or removed according to the actual conveying distance, and are easy and quick to disassemble, making them suitable for different terrains and environments.

[0041] In some other embodiments, the shell transport assist device 1 further includes an anti-fall guardrail unit 50, which includes an inner anti-fall guardrail unit 51, an outer anti-fall guardrail unit 52, a connecting locking pin 53, and an anti-fall guardrail unit bearing 54. The upper parts of the inner anti-fall guardrail unit 51 and the outer anti-fall guardrail unit 52 are hinged by the connecting locking pin 53 and embedded in the anti-fall guardrail unit bearing 54. The lower parts of the inner anti-fall guardrail unit 51 and the outer anti-fall guardrail unit 52 are connected by the end connecting rod N. When the conveying mechanism 20 is unfolded, it drives the anti-fall guardrail unit 50 to unfold simultaneously; when the conveying mechanism 20 is folded, it drives the anti-fall guardrail unit 50 to fold simultaneously.

[0042] Specifically, the anti-fall guardrail unit 50 is connected to the first hinge assembly 21 and the second hinge assembly 22. The inner anti-fall guardrail unit 51 and the outer anti-fall guardrail unit 52 are hinged by the connecting locking pin 53. At the same time, the connecting locking pin 53 is embedded with the anti-fall guardrail unit bearing 54. The lower parts of the inner anti-fall guardrail unit 51 and the outer anti-fall guardrail unit 52 are respectively connected to two adjacent end connecting rods N, and the connection between them and the end connecting rods N is hinged. The anti-fall guardrail unit bearing 54 plays a role in assisting rotation and providing support.

[0043] Furthermore, both the inner anti-fall guardrail unit 51 and the outer anti-fall guardrail unit 52 are curved structures. The middle part of the inner anti-fall guardrail unit 51 is curved towards the top of the conveying mechanism 20, and the middle part of the outer anti-fall guardrail unit 52 is curved towards the top of the conveying mechanism 20. That is to say, the curvature center of the inner anti-fall guardrail unit 51 is towards the side closer to the conveying mechanism 20, and the curvature center of the outer anti-fall guardrail unit 52 is towards the side closer to the conveying mechanism 20. Thus, when the first anti-fall plate 231, the second anti-fall plate 232, and the hinge 233 are flattened, the inner anti-fall guardrail unit 51 and the outer anti-fall guardrail unit 52 bend to form a double arch structure, which can effectively prevent the shells on the conveying mechanism 20 from falling.

[0044] In some other embodiments, the buffer mechanism 40 includes a buffer baffle 41, a first connecting beam 42, a second connecting beam 43, and a buffer mechanism bearing 44. The buffer baffle 41 is movably connected to the first connecting beam 42 by embedding the buffer mechanism bearing 44. The buffer baffle 41 has a guide groove K. The second connecting beam 43 can selectively slide back and forth in the guide groove K. The buffer baffle 41 is used to prevent the ammunition box from falling and colliding. The first connecting beam 42 is located above the ammunition delivery assist device 1 relative to the second connecting beam 43. Both the first connecting beam 42 and the second connecting beam 43 are end connecting rods N.

[0045] Specifically, the buffer mechanism bearing 44 is connected between the first connecting beam 42 and the buffer baffle 41, allowing relative rotation between the first connecting beam 42 and the buffer baffle 41. The buffer baffle 41 has a guide groove K, which guides and limits the second connecting beam 43. When the conveying mechanism 20 is unfolded or folded, the second connecting beam 43 slides back and forth in the guide groove K.

[0046] Furthermore, the guide groove K has a shape that is narrower at the top and wider at the bottom. That is, the outline size of the guide groove K gradually decreases from the side away from the first connecting beam 42 towards the side closer to the first connecting beam 42. The outline size of the guide groove K on the side away from the first connecting beam 42 is larger than the diameter of the second connecting beam 43, and the outline size of the guide groove K on the side closer to the first connecting beam 42 is equal to the diameter of the second connecting beam 43. Thus, when the second connecting beam 43 is located in the guide groove K on the side closer to the first connecting beam 42, the guide groove K effectively limits the movement of the second connecting beam 43, making the flattening of the conveying mechanism 20 more stable. When the second connecting beam 43 is located in the guide groove K on the side away from the first connecting beam 42, it facilitates the retraction, folding, and storage of the conveying mechanism 20, saving effort.

[0047] The shell transport assist device 1 mainly consists of seven parts: a jack connector, a fall arrestor plate, a fall arrestor guardrail unit 50, a load-bearing component 23, a buffer mechanism 40, a support frame 10, and a transport mechanism 20. The jack connector works in conjunction with a hydraulic jack to lift or lower the extended transport mechanism 20; the fall arrestor plate prevents the load from falling; the fall arrestor guardrail unit 50 prevents the load from sliding laterally; the load-bearing component 23 mainly bears the load and transfers it to the buffer mechanism 40 through rotation; the buffer mechanism 40 prevents the load from slipping after being delivered to the designated position; the support frame 10 is equivalent to the system fulcrum; and the transport mechanism 20 is used for rapid deployment and retraction.

[0048] In use, place one end of the buffer mechanism 40 of the shell transport assist device 1 at the load destination. Two people work together to quickly unfold the transport mechanism 20. At this time, the anti-fall plate opens naturally by the hinge 233, and the anti-fall guardrail unit 50 extends naturally. The bracket 10 is erected and fixed. The bottom end of the jack connector is connected to the small hydraulic jack. The load is placed at one end of the jack. The jack is quickly adjusted to lift one end of the shell transport assist device 1. The load is delivered to the destination by using gravitational potential energy and the rolling of the load-bearing beam. The buffer mechanism 40 receives the load, and the personnel at the destination unload the load.

[0049] During retraction, personnel at both ends quickly close the conveyor mechanism 20, the anti-fall plate closes naturally, and the anti-fall guardrail unit 50 retracts, allowing for rapid retraction. When fully retracted, the interval between each plate unit is approximately 42.95mm; when fully extended, the interval is approximately 162.00mm, with a telescoping ratio of approximately 3.77. For example, in artillery operations, if a shell is placed approximately 5 meters to the side and rear of the artillery piece, the extended state is 5 meters, while the retracted state is only 1.33 meters, facilitating retraction and placement. In civilian applications, it also significantly improves work efficiency for vehicle unloading and handling.

[0050] In some other embodiments, the buffer baffle 41 has a through clearance area P on the side away from the conveying mechanism 20, the clearance area P being used for a portion of the conveying mechanism 20 to extend out. Specifically, when the conveying mechanism 20 is folded and extended, portions of the first hinge assembly 21 and the second hinge assembly 22 extend out through the clearance area P, thereby avoiding motion interference.

[0051] In some other embodiments, the support 10 includes an A-shaped first frame 11 and a second frame 12, which are spaced apart on both sides of the conveying mechanism 20 and are movably connected to the same central connecting rod M.

[0052] Specifically, the first frame 11 and the second frame 12 are positioned opposite each other and spaced apart. The first frame 11 and the second frame 12 support and bear the load for the conveying mechanism 20. The first frame 11 is A-shaped and the second frame 12 is A-shaped. The apex of the first frame 11 and the apex of the second frame 12 are movably connected to the same central connecting rod M.

[0053] Furthermore, the distance between the support 10 and the lifting mechanism 30 is greater than the distance between the support 10 and the buffer mechanism 40. In this case, when a small external force is applied to the position of the lifting mechanism 30, the projectile can be easily transported from the first part 201 of the conveying mechanism 20 to the second part 202 using the lever principle, thus saving effort.

[0054] In some other embodiments, the lifting mechanism 30 includes a connecting frame 31 and a force-applying part 32. The connecting frame 31 is U-shaped, and the force-applying part 32 is connected to the side of the connecting frame 31 away from the opening. The opposite ends of the connecting frame 31 are hinged to the same end connecting rod N. The force-applying part 32 is used to connect with a power mechanism to control the first part 201 to rise or fall.

[0055] Establishment of the overall structural mechanical model:

[0056] like Figure 6As shown, in the initial state of use, the torque of one end of the jack connector relative to the bracket should be greater than the torque of one end of the buffer mechanism relative to the bracket, to ensure that in the initial state, one end of the jack connector is connected to the small hydraulic jack from below.

[0057] Let the force on each mass element of the jack connector end be Goi, and the lever arm from the center of the support be Roi. Let the force on each mass element of the buffer mechanism end be Gj, and the lever arm from the center of the support be Rj. Then, the system torque satisfies:

[0058]

[0059] After the jack connector and hydraulic jack are connected, they are directly supported on the ground.

[0060] When in use, the jack will lift one end of the jack connector to a small angle relative to the center of the support. The load will slide towards the buffer mechanism using gravitational potential energy. When the load moves to one end of the buffer mechanism, it is necessary to prevent one end of the jack connector from tilting up.

[0061] Let the load be G, and the lever arm from the center of the support be R. At this point, the system torque satisfies:

[0062]

[0063] Establishment and numerical calculation of load-bearing structural mechanical model:

[0064] The support beam is a statically indeterminate beam with a load-bearing top and fixed ends. The support beam is 600mm long, with each of the two fixed ends being 90mm long and the middle load-bearing section L = 420mm; the diameter of the fixed ends is d = 12mm, and the diameter of the middle load-bearing section is D = 21mm; the load weight is approximately 500N (much greater than the weight of a shell), which is equivalent to a uniformly distributed load.

[0065] The model is constructed as a beam with both ends fixed under a uniformly distributed load of q = 500 / 0.42 N / m per unit length. The mechanical model is analyzed using the unit load method.

[0066] Let the bending moment at any section of the load-bearing beam be M, and define the bending moment as positive when tension is downward and compression is upward. According to... Figure 7 and Figure 8 Using the section method:

[0067]

[0068] Remove the known loads, according to Figure 9 If a unit bending moment of 1 is applied as shown in the figure, then the bending moment at any section is:

[0069]

[0070] According to the unit load method, using the rotation angle at the midpoint of the load-bearing beam being 0° as the continuity condition, then:

[0071]

[0072] Substituting the data, the torque at the midpoint is:

[0073] M o = 8.75 N·m (6)

[0074] The maximum bending moment at both ends and edges of the load-bearing section is:

[0075] M = -17.5 N·m (7)

[0076] The section modulus at the midpoint and both ends of the load-bearing section is:

[0077]

[0078] The section modulus for bending resistance at the edge of the load-bearing section is taken as:

[0079]

[0080] in

[0081] Using the relationship between bending moment and stress:

[0082]

[0083] Substituting (6), (7), (8), and (9) into (10) respectively, we can obtain the maximum tensile stresses at the midpoint, both ends of the load-bearing section, and the edge of the load-bearing section as follows:

[0084] σ1=9.72MPa

[0085] σ² = 19.23 MPa

[0086] σ3 = 39.68 MPa

[0087] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A projectile delivery assist device, characterized in that, The shell conveying assist device includes a support frame, a conveying mechanism, a lifting mechanism, and a buffer mechanism. The conveying mechanism is used to convey shells and is hinged to the support frame. The conveying mechanism can selectively rotate relative to the support frame. The conveying mechanism includes a first part and a second part connected together, located on opposite sides of the support frame. The lifting mechanism is connected to the first part, and the buffer mechanism is connected to the second part. The buffer mechanism is used to cushion the shells. The first part constitutes the shell loading position, and the second part constitutes the shell unloading position. When the conveying mechanism is in the deployed state... At the same time, the lifting mechanism drives the first part to rise and simultaneously drives the second part to fall, so as to transport the shell located in the first part to the second part, realizing the delivery of the shell; the delivery mechanism is a telescopic mechanism, which can selectively extend and retract relative to the support. The delivery mechanism includes a first hinge assembly and a second hinge assembly, which are spaced apart on both sides of the support. The first hinge assembly includes a plurality of cross-hinged movable rods, and the second hinge assembly includes a plurality of cross-hinged movable rods. The plurality of cross-hinged movable rods retract relative to each other, using... The projectile transport assist device is designed to be foldable. The transport mechanism further includes several central connecting rods and several end connecting rods, which are connected between the first hinge assembly and the second hinge assembly. One central connecting rod is connected to the hinge point of a cross-hinged movable rod, and the other end connecting rods are respectively connected to the ends of the movable rod. The transport mechanism also includes several sets of load-bearing assemblies, which can be selectively folded and connected between adjacent end connecting rods. The projectile transport assist device also includes an anti-fall guardrail unit, which includes an inner anti-fall guardrail. The system comprises an inner anti-fall guardrail unit, an outer anti-fall guardrail unit, a connecting locking pin, and an anti-fall guardrail unit bearing. The upper parts of the inner and outer anti-fall guardrail units are hinged by the connecting locking pin and embedded in the anti-fall guardrail unit bearing. The lower parts of the inner and outer anti-fall guardrail units are connected by the end connecting rod. When the conveying mechanism unfolds, it drives the anti-fall guardrail units to unfold simultaneously. Both the inner and outer anti-fall guardrail units have curved structures. The middle part of the inner anti-fall guardrail unit bends upward toward the conveying mechanism, and the middle part of the outer anti-fall guardrail unit also bends upward toward the conveying mechanism.

2. The shell delivery assist device as described in claim 1, characterized in that, The load-bearing component includes a first anti-fall plate, a second anti-fall plate, a hinge, a first sleeve portion, and a second sleeve portion. The hinge is movably connected between the first anti-fall plate and the second anti-fall plate. The first sleeve portion is fixedly connected to the side of the first anti-fall plate away from the hinge. The second sleeve portion is fixedly connected to the side of the second anti-fall plate away from the hinge. The first sleeve portion and the second sleeve portion are respectively sleeved on two adjacent end connecting rods.

3. The shell delivery assist device as described in claim 1, characterized in that, The buffer mechanism includes a buffer baffle, a first connecting beam, a second connecting beam, and a buffer mechanism bearing. The buffer baffle is movably connected to the first connecting beam by embedding the buffer mechanism bearing. The buffer baffle has a guide groove, and the second connecting beam can selectively slide back and forth in the guide groove. The buffer baffle is used to prevent the ammunition box from falling and colliding. The first connecting beam is located above the ammunition delivery assist device relative to the second connecting beam. Both the first connecting beam and the second connecting beam are end connecting rods.

4. The shell delivery assist device as described in claim 3, characterized in that, The buffer baffle has a through clearance area on the side away from the conveying mechanism, and the clearance area is used for a portion of the conveying mechanism to extend out.

5. The shell delivery assist device as described in claim 1, characterized in that, The support includes an A-shaped first frame and a second frame, which are spaced apart on both sides of the conveying mechanism and are movably connected to the same central connecting rod.

6. The shell delivery assist device as described in claim 5, characterized in that, The distance between the support and the lifting mechanism is greater than the distance between the support and the buffer mechanism.

7. The shell delivery assist device as described in claim 1, characterized in that, The lifting mechanism includes a connecting frame and a force-applying part. The connecting frame is U-shaped, and the force-applying part is connected to the side of the connecting frame away from the opening. The opposite ends of the connecting frame are hinged to the same end connecting rod. The force-applying part is used to connect with a power mechanism to control the first part to rise or fall.

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