A lifting device that works with a spiral guide rail

Abstract

This utility model discloses a projectile lifting device in conjunction with a spiral guide rail, including a base plate. A protruding handle is installed on one end face of the base plate, and a pair of supports are installed parallel to each other on the other end face of the base plate. A winch is rotatably installed between the pair of supports. One end of the winch extends out of the support and is connected to a power component. The other end of the winch is located between the pair of supports and has a mounting hole extending through the direction of the protruding handle near the support. A limiting groove is formed at the end of the mounting hole near the protruding handle. A chain assembly is fitted into the mounting hole. One end of the chain assembly passes through the mounting hole and is fitted into the limiting groove. After installation, the limiting groove limits the installation of one end of the chain assembly to prevent it from falling out of the mounting hole. This device not only saves time and effort, improves loading efficiency, reduces friction with equipment, and reduces impacts on equipment, but also allows personnel to remain inside the gun compartment and not be exposed outside the armor protection during loading, achieving maximum protection for the shooter.

Description

Technical Field

[0001] This patent relates to the field of ammunition transport technology for infantry vehicles or armored vehicles, specifically to an ammunition lifting device that works in conjunction with a spiral guide rail. Background Technology

[0002] When loading ammunition into an infantry fighting vehicle (IFV), the ammunition belt must be fed from the lower ammunition box along rigid and flexible guides to the gun's feed port. During combat, without auxiliary lifting tools, the ammunition belt must be pulled manually to the breech feed port. Reloading outside the vehicle requires multiple personnel working together, exposing the operator to enemy fire, which is highly dangerous. Reloading inside the vehicle is inefficient due to the limited working space at the top of the turret. Furthermore, the rigid guide of the IFV's ammunition loading system has a high degree of torsion, increasing friction and impact during manual lifting, which is not only time-consuming and labor-intensive but also prone to causing impacts that degrade the equipment's performance and shorten its service life. Utility Model Content

[0003] To address the problems of low efficiency and poor safety of manual ammunition loading, this utility model patent proposes an ammunition loading device that works in conjunction with a spiral guide rail. Using this ammunition loading mechanism, the ammunition belt can be quickly lifted from the lower ammunition box to the breech inlet, allowing personnel to complete the initial ammunition loading without leaving the gun compartment. This not only saves time and effort and improves loading efficiency, but also reduces friction with the equipment, minimizing impacts and extending the equipment's service life.

[0004] The technical solution adopted to achieve the above objectives is:

[0005] A projectile lifting device for use with a helical guide rail, used in conjunction with a helical guide rail on an infantry fighting vehicle or armored vehicle to deliver projectiles, includes a base plate. A protruding handle is mounted on one end of the base plate, and a pair of supports are mounted parallel to each other on the other end of the base plate. A winch is rotatably mounted between the pair of supports. One end of the winch is externally connected to a power component, and the other end of the winch is located between the pair of supports and has a mounting hole extending along the direction of the protruding handle near the support portion. A limit groove is formed at the end of the mounting hole near the protruding handle. A chain assembly is fitted into the mounting hole, with one end of the chain assembly passing through the mounting hole and fitting into the limit groove. After installation, the limit groove limits the installation of one end of the chain assembly to prevent it from falling out of the mounting hole. During operation, the power component drives the winch to rotate, and the winch lifts the projectile by winding around the chain assembly.

[0006] Furthermore, a helical groove is formed along the axial direction on the outer surface of the helical rod, and the helical groove is used in conjunction with the chain assembly.

[0007] Furthermore, the two ends of the winch are equipped with slewing shafts that cooperate with the supports, and bearings are installed between the slewing shafts and the supports.

[0008] Furthermore, the power assembly includes a worm gear and a worm, which are installed inside the mounting housing. The input end of the worm is connected to the power output end, and a connecting shaft is installed at the center of the worm gear. The other end of the connecting shaft extends out of the mounting housing and is inserted into the winch rotation shaft. During operation, the connecting shaft rotates together with the winch rotation shaft.

[0009] Furthermore, the power output end includes a motor or a handle, the handle is connected to the worm gear through a rotary wheel, the worm gear is fixedly connected to the rotation center of the rotary wheel, and the handle is installed on the rotary wheel away from the rotation center.

[0010] Furthermore, the limiting groove is a square groove with a cross-section larger than that of the mounting hole.

[0011] Furthermore, the chain assembly includes multiple chains connected in series, with a lifting hook installed at one end of the chain and a limiting hook that mates with a limiting groove installed at the other end of the chain.

[0012] The beneficial effects of this utility model patent are as follows:

[0013] This invention relates to a projectile lifting device that works in conjunction with a spiral guide rail. It can quickly lift the ammunition belt from the lower ammunition box to the breech inlet, allowing personnel to complete the initial loading without leaving the gun compartment. The device can complete the transfer of ammunition from the ammunition box to the gun inlet within 5 minutes, without disassembling the mechanism and without affecting the normal operation of the gun or the vehicle's NBC protection capabilities. Using this device not only saves time and labor, improving loading efficiency and reducing friction with equipment, thus extending equipment lifespan, but also allows personnel to remain inside the gun compartment and not exposed outside the armor protection during loading, saving loading time while maximizing the protection of the gunner. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a top view of the winch in this utility model;

[0016] Figure 3 These are two oblique side views of the connecting rod in this utility model;

[0017] Figure 4 This is a schematic diagram of the installation of the connecting rod and chain assembly in this utility model;

[0018] Figure 5 This is a schematic diagram of the installation of the winch and the limiting hook in this utility model;

[0019] Figure 6 This is a schematic diagram of the installation of the chain and the lifting hook in this utility model;

[0020] Figure 7This is a schematic diagram of the structure after the chain assembly has been removed in this utility model;

[0021] Figure 8 This is a schematic diagram of the installation of the winch and power assembly in this utility model. Detailed Implementation

[0022] The present utility model patent will be further described below with reference to the accompanying drawings.

[0023] like Figure 1-8 As shown, a projectile lifting device that works with a spiral guide rail is used in conjunction with a spiral guide rail on an infantry vehicle or armored vehicle to deliver projectiles. The device includes a base plate 2, on one end of which a protruding handle 3 is mounted. In this embodiment, two protruding handles 3 are provided and are arranged in parallel. During installation, they are installed together with the mating parts on the turret to ensure that the device is subjected to balanced force and is firm and reliable. A pair of supports 7 are installed parallel to each other on the other end face of the base plate 2. A winch 4 is rotatably installed between the pair of supports 7. One end of the winch 4 is externally connected to a power component 5. The other end of the winch 4 is located between the pair of supports 7 and has a mounting hole 42 that runs through the direction of the convex handle 3 near the support 7. A limiting groove 43 is opened at the end of the mounting hole 42 near the convex handle 3. A chain assembly 1 is installed in the mounting hole 42. One end of the chain assembly 1 passes through the mounting hole 42 and is installed in conjunction with the limiting groove 43. After installation, the limiting groove 43 limits the installation of one end of the chain assembly 1 to prevent the chain assembly 1 from falling out of the mounting hole 42. During operation, the power component 5 drives the winch 4 to rotate, and the winch 4 achieves the lifting function by winding the chain assembly 1.

[0024] To facilitate the transport of artillery shells, in this embodiment, a spiral groove 41 is formed along the axial direction on the outer surface of the winch 4. The spiral groove 41 works in conjunction with the chain assembly 1. During shell transport, the free end of the chain assembly 1 is fitted with the shell's ammunition belt. By rotating the winch 4, the chain assembly 1 and the spiral groove 41 work together to wind the chain assembly 1, thereby completing the transport of the shell-loaded ammunition belt from the bottom to the ammunition loading point.

[0025] like Figure 1-8 As shown, in order to realize the rotation function of the winch 4 relative to the support 7, in this embodiment, the two ends of the winch 4 are equipped with rotation shafts that cooperate with the support 7, and bearings are installed between the rotation shafts and the support 7.

[0026] like Figure 1-8As shown, to achieve the rotational motion of the winch 4, in this embodiment, the power assembly 5 includes a worm gear 52 and a worm 51. The worm gear 52 and worm 51 are installed inside the mounting housing 53. The input end of the worm 51 is connected to the power output end. A connecting shaft 54 ​​is installed at the center of the worm gear 52. The other end of the connecting shaft 54 ​​extends out of the mounting housing 53 and is inserted into the rotational shaft of the winch 4. During operation, the connecting shaft 54 ​​rotates together with the rotational shaft of the winch 4. Preferably, the power output end includes a motor or a handle 8. The handle 8 is connected to the worm 51 via a rotating wheel 9. The worm 51 is fixedly connected to the rotational center of the rotating wheel 9, and the handle 8 is installed on the rotating wheel 9 away from the rotational center. In this embodiment, the power output end is the handle 8. A transmission shaft is connected to the rotating wheel 9 and the worm 51 via a key. One end of the transmission shaft is inserted into the worm 51, and the other end of the transmission shaft is connected to the rotational center of the rotating wheel 9. During operation, rotating the handwheel drives the rotary wheel 9 to rotate. The rotary wheel 9, via the transmission shaft, drives the worm gear 51 to rotate. The worm gear 51 drives the mating worm wheel 52 to move. The output end of the worm wheel 52 drives the winch 4 to rotate via the connecting shaft 54. To ensure that the worm wheel 52 and the winch 4 on the power assembly 5 are installed coaxially, the two ends of the connecting shaft 54 ​​are respectively connected to the worm wheel 52 and the winch 4. A pad 6 is installed between the power assembly 5 and the base plate 2.

[0027] like Figure 1-8 As shown, in order to achieve the limiting installation of chain assembly 1, in this embodiment, the limiting groove 43 is a square groove with a cross-section larger than that of the mounting hole 42. The square groove cooperates with one end of the chain assembly 1 to prevent the installed chain assembly 1 from falling out of the mounting hole 42.

[0028] like Figure 1-8 As shown, to achieve the function of transporting ammunition-loaded ammunition belts, in this embodiment, ammunition transport is achieved through the winding motion of chain assembly 1. Chain assembly 1 includes multiple chains 11 connected in series. One end of each chain 11 is equipped with a lifting hook 12, and the other end is equipped with a limiting hook 13 that mates with a limiting groove 43. The limiting hook 13 is larger than the cross-section of the mounting hole 42, and after installation, it fits perfectly into the limiting groove 43. The lifting hook 12 mates with the links on the ammunition belt. During operation, the limiting hook 13 is engaged in the limiting groove 43. As the winch 4 rotates, the chain 11 engages with the spiral groove 41 on the winch 4, allowing chain assembly 1 to wind around the winch 4, thereby enabling the lifting hook 12 to lift the ammunition-loaded ammunition belt and transport it to the ammunition mounting point.

[0029] The installation and working principle of this utility model are as follows:

[0030] During installation: (1) Lift the device to the outside of the roof of the infantry fighting vehicle or armored vehicle, lift the convex handle 3 with both hands, and insert it into the vehicle through the ventilation window to achieve fixed installation; (2) Turn the handle 8 to adjust the mounting hole 42 on the winch 4 to the horizontal position, connect and fix the limiting hook 13 to one end of the chain 11, pass the other end of the chain 11 through the limiting groove 43 and the mounting hole 42 respectively, and fix it in conjunction with the ammunition lifting hook 12. At this time, the limiting hook 13 is stuck in the limiting groove 43; (3) Turn the handle 8 to allow the end of the chain 11 with the ammunition lifting hook 12 to pass through the middle of the ammunition belt spiral guide rail of the infantry fighting vehicle or armored vehicle and hang down naturally; connect the ammunition lifting hook 12 to the link of the ammunition belt.

[0031] During operation, when the rapid-fire cannon finishes firing one ammunition belt and needs to load the next, the handwheel is turned. The handwheel drives the rotary wheel 9 to rotate, which in turn drives the worm gear 51 to rotate via the transmission shaft. The worm gear 51 drives the mating worm wheel 52 to move. The output end of the worm wheel 52 drives the winch 4 to rotate via the connecting shaft 54. At this time, the limiting hook 13 is engaged in the limiting groove 43. With the rotation of the winch 4, the chain 11 works in conjunction with the spiral groove 41 on the winch 4, so that the chain assembly 1 is wound around the winch 4. This allows the ammunition lifting hook 12 to lift the ammunition belt loaded with ammunition and transport it to the ammunition installation point along the spiral guide rail on the infantry vehicle or armored vehicle. In this embodiment, the chain 11 is wound into the spiral groove 41 of the winch 4 one by one until the chain 11 is wound around the winch 4 8 times, and the ammunition belt is delivered to the position.

[0032] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model patent. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model patent shall fall within the protection scope of this utility model patent technical solution.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model patent, and are not intended to limit it. Although this utility model patent has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model patent.

Claims

1. A projectile lifting device that works in conjunction with a helical guide rail, used in conjunction with a helical guide rail on an infantry fighting vehicle or armored vehicle to deliver projectiles, characterized in that, The device includes a base plate, on one end of which a protruding handle is mounted. On the other end of the base plate, a pair of supports are mounted parallel to each other. A winch is rotatably mounted between the two supports. One end of the winch is externally connected to a power component. The other end of the winch is located between the two supports and has a mounting hole extending along the direction of the protruding handle near the support portion. A limit groove is formed at the end of the mounting hole near the protruding handle. A chain assembly is fitted into the mounting hole. One end of the chain assembly passes through the mounting hole and fits into the limit groove. After installation, the limit groove limits the installation of one end of the chain assembly to prevent it from falling out of the mounting hole. During operation, the power component drives the winch to rotate, and the winch achieves the lifting function by winding the chain assembly.

2. The spring-lifting device in conjunction with a spiral guide rail according to claim 1, characterized in that, The outer surface of the helical rod is provided with a spiral groove along the axial direction, and the spiral groove is used in conjunction with the chain assembly.

3. The spring-lifting device in conjunction with a spiral guide rail according to claim 2, characterized in that, The two ends of the winch are equipped with rotating shafts that cooperate with the supports, and bearings are installed between the rotating shafts and the supports.

4. The spring-lifting device in conjunction with a spiral guide rail according to claim 3, characterized in that, The power assembly includes a worm gear and a worm, which are installed inside the mounting housing. The input end of the worm is connected to the power output end. A connecting shaft is installed at the center of the worm gear. The other end of the connecting shaft extends out of the mounting housing and is inserted into the winch rotation shaft. During operation, the connecting shaft rotates together with the winch rotation shaft.

5. A spring-lifting device in conjunction with a spiral guide rail according to claim 4, characterized in that, The power output end includes a motor or a handle. The handle is connected to the worm gear via a rotary wheel. The worm gear is fixedly connected to the rotation center of the rotary wheel. The handle is installed on the rotary wheel away from the rotation center.

6. A spring-lifting device in conjunction with a spiral guide rail according to claim 5, characterized in that, The limiting groove is a square groove larger than the cross-section of the mounting hole.

7. A spring-lifting device in conjunction with a spiral guide rail according to claim 6, characterized in that, The chain assembly includes multiple chains connected in series, with a lifting hook installed at one end of the chain and a limiting hook that mates with a limiting groove at the other end of the chain.

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