CN217022925U - Projectile recovery device - Google Patents

Abstract

The utility model relates to a projectile recovery device, in particular to a device for buffering and containing a projectile which is horizontally shot by an ejection device within a short distance. Compared with the prior art, the utility model utilizes the special deep cavity shape of the common tire and the high elasticity, large damping and impact resistance of the rubber, cord thread and steel wire composite material, can efficiently implement front buffering and rebound retardation on the high-speed projectile body, utilizes the serial connection tire combination to form a narrow deep-hole type buffering and recycling space, can effectively limit the rebound path and rebound stroke of the projectile body, and can further improve the buffering efficiency, safety and service life of the device by optimizing the filling of the buffer material in the tire cavity and the net bag in the scheme.

Description

Projectile recovery device

Technical Field

The utility model relates to a projectile recovery device, in particular to a device for buffering and containing a projectile which is shot flatly by an ejection device in a short distance.

Background

In the development process of launching devices such as unmanned aerial vehicles, fire extinguishing bombs and the like, the performance of the launching devices is often debugged and checked through simulated loads. Under the constraints of the test environment, the simulation load ejected at a high speed is usually required to be buffered within a certain space range so as not to damage the test site and the related equipment. In practice, the recovery device adopts either a net rack mode or a frame mode, wherein the former buffers and recovers the simulation load as a projectile body through a safety net, and the latter buffers and recovers the simulation load through a buffer pad in the frame. Generally speaking, the space occupied by the grid type is large, the rebound path of the projectile is not easy to control, the frame type is bulky, the weight is heavy, the recovery impact is large, and the recovery pad is easy to damage. Especially when the test site space is small, the use of both of the above two approaches is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the space occupation of the net rack mode is large, the projectile rebounding path is difficult to control, the size of the frame mode is large, the weight is heavy, the recovery impact is large, the recovery pad is easy to damage, and particularly when the space of a test site is small, the use of the two modes is limited. In order to solve the above problems, the present invention provides a projectile recovery device.

The object of the utility model is achieved in the following way: a projectile recovery device comprises a base, a pair of longitudinal beams, a pair of side rails, a plurality of tires and a ram-on piece; the longitudinal beam is connected to the base; the two side rails are respectively hinged on the two longitudinal beams; each side rail comprises a longitudinal rod and a pair of vertical rods, the two vertical rods are respectively positioned at the front end and the rear end of the longitudinal rod and are perpendicular to and coplanar with the longitudinal rod, and the tail ends of the two vertical rods are coaxially hinged at the front end and the rear end of the longitudinal beam; each tire is sequentially arranged between the front upright post and the rear upright post of the two side rails along the longitudinal direction in a state that the tire side is ahead, and is transversely arranged between the two longitudinal beams; the impact piece is arranged between two adjacent tires, and the rear end face of the impact piece covers a hub hole of a tire behind the impact piece and is supported on the sidewall of the tire; the longitudinal bars of the two side rails are supported on the crown of the tire and are mutually tensioned by the side rail connecting elements.

Preferably, the impact piece is a flexible fiber woven net, and at least one tire at the tail part of all tires is completely wrapped and fastened by the woven net. In a further optimization, an in-network buffer column is filled in a cylindrical space defined by one or a plurality of tire beads covered by a flexible fiber woven net, and the in-network buffer column is made of elastic buffer materials.

Preferably, a tire liner buffer body is filled in an annular cavity surrounded by the inner liner of the tire, and the tire liner buffer body is made of elastic buffer materials.

Preferably, the tires are bound together by ropes, the front sidewall of the front tire is close to the front upright post of the side rail, and the rear sidewall of the rear tire keeps a distance from the rear upright post of the side rail.

Preferably, the base comprises at least two transverse beams arranged along the longitudinal direction, the longitudinal beams are connected with the transverse beams in a detachable connection mode, and the connection interfaces of the transverse beams and each longitudinal beam are at least two groups.

Compared with the prior art, the utility model can efficiently implement front buffering and rebound retardation on a high-speed projectile by utilizing the special deep cavity form of a common tire and the high elasticity, large damping and impact resistance of a rubber, cord thread and steel wire composite material, can effectively limit the rebound path and rebound stroke of the projectile by utilizing the narrow deep-hole type buffering and recycling space formed by combining the tires connected in series, can further improve the buffering efficiency and safety and prolong the service life of the device by optimizing the filling of the tire cavity and the buffer material in the net bag in the scheme, has compact structure, short recycling stroke, high recycling efficiency and controllable projectile rebound, and is suitable for being used in narrow space. Meanwhile, the tire is not required to be brand new, waste tires can be adopted, and the common packaging buffer materials such as EPE (expanded polyethylene) foam plastics can be selected as the buffer materials for filling, so that the whole technical scheme has good economical efficiency; in the optimized scheme of the utility model, the tires are compacted through the side rail, the tires are bundled together through the rope, when the projectile body impacts a woven net wrapping the rear tire, the rear tire bearing the impact and the internal filler deform, and simultaneously the bundling rope belt drives all the tires in front to move forwards together until the rear side wall of the rearmost tire is compacted on the rear vertical rod of the side rail, in the process, the friction force between each tire crown, the side rail longitudinal rod and the longitudinal beam (or the ground) becomes buffer resistance, the buffer energy consumption can be effectively increased, and the rebound kinetic energy of the projectile body is reduced. The pressing force of the side rail longitudinal rod on the tire can be adjusted by adjusting the length of the side rail longitudinal rod connecting piece, so that the proportion of friction energy consumption in the whole buffering energy consumption and the buffering overload can be conveniently and flexibly adjusted within a certain range; in the optimized scheme of the utility model, the longitudinal beams are connected with the cross beams through different connecting interfaces on the cross beams, so that the distance between the longitudinal beams can be changed, the ground clearance of the tire with the tire crown supported on the longitudinal beams can be further changed, and the recovery of the flat projectile at different flight heights can be further adapted.

Drawings

Fig. 1 is a perspective view of a projectile recovery device in a first use state (small pitch of longitudinal beams, elevated recovery holes) according to a first embodiment.

FIG. 2 is a perspective view of the projectile recovery device in a second use state (longitudinal beams spaced apart by a large distance and recovery holes lowered) in accordance with the first embodiment.

Fig. 3 is a sectional view of the projectile recovery device in a first use state according to the first embodiment.

Fig. 4 is a diagram of the configuration of the two tire cord nets at the tail part of the projectile recovery device in the first embodiment.

Fig. 5 is a schematic view showing a state after recovery and a process of projectile motion of the first embodiment of the projectile recovery apparatus.

Fig. 6 is a cross-sectional view of a second embodiment of a projectile recovery device.

Fig. 7 is a sectional view of a third embodiment of a projectile recovery device.

Wherein, 1-a base; 2-longitudinal beam; 3-side fence; 4-a tire; 5-an inner-tyre buffer body; 6-buffer column in the net; 7-rope net; 8-strapping tape; 9-a side rail connector; 10-attack the disc; 11-a cross beam; 21-an end plate; 22-a railing hinged support; 31-a longitudinal bar; 32-upright stanchion; 100-projectile body.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

A first embodiment of the present invention, a state before the recovery of the flat projectile 100 in this embodiment is shown in fig. 1, fig. 2 and fig. 3, a state after the recovery and a movement process of the projectile 100 in the recovery device are shown in fig. 5, and a projectile recovery device, as shown in fig. 1 to fig. 4, includes a set of base 1, a pair of longitudinal beams 2, a pair of side rails 3, nine tires 4 of the same specification, the same number of cushion bodies 5 in the tire, an in-net cushion column 6, a rope net 7, a plurality of sets of strapping tapes 8, a side rail connecting piece 9, and the like.

The base 1 is composed of a pair of beams 11, and the two beams 11 are aligned transversely and arranged longitudinally. The beam 11 is made of angle steel, the bottom edge of the beam is fixedly connected with the ground or an installation table board through foundation bolts, bolt connecting holes with the two longitudinal beams 2 are symmetrically formed in the vertical edge of the beam, the connecting holes are transverse long holes, a pair of holes aligned vertically is used as a group, the connecting holes are six groups in total, the beam 11 is symmetrically distributed on the vertical edge of the angle steel in the bilateral direction, and the transverse distance between adjacent hole groups on each side is equal.

The two longitudinal beams 2 have the same shape and size, are aligned in the longitudinal direction and are symmetrically arranged relative to the front cross beam 11 and the rear cross beam 11 in the transverse direction. The main body of the longitudinal beam 2 is made of rectangular hollow section steel, the two ends of the longitudinal beam are provided with end plates 21, a group of connecting holes distributed in a 2X 2 rectangular array are formed in the end plates 21, and the connecting holes can be aligned with any two adjacent groups of long holes in the cross beam 11 one by one. The longitudinal beam 2 is matched with the corresponding connecting hole on the cross beam 11 through the connecting hole on the end plate 21 of the longitudinal beam, and is connected with the cross beam 11 in a bolt group mode. When the end plate 21 of each longitudinal beam 2 is matched and connected with two groups of adjacent long holes on the inner side of the cross beam 11, the distance between the two longitudinal beams 2 is smaller, as shown in fig. 1, and when the end plate 21 of each longitudinal beam 2 is matched and connected with two groups of adjacent long holes on the outer side of the cross beam 11, the distance between the two longitudinal beams 2 is larger, as shown in fig. 2. And a side rail hinged support 22 is arranged above two ends of the longitudinal beam 2 and used for hinging the side rail 3.

The two side rails 3 have the same shape and size and are respectively hinged on the two longitudinal beams 2. Each side fence 3 comprises a longitudinal rod 31 and a pair of vertical rods 32, the longitudinal rods are made of steel pipes, the two vertical rods 32 are identical in shape and size, are respectively arranged at the front end and the rear end of the longitudinal rod 31 and are perpendicular to and coplanar with the longitudinal rod 31, hinge holes are respectively formed in the tail ends of the two vertical rods 32, and the two hinge holes are coaxial and parallel to the axis of the longitudinal rod 31. Each side rail 3 is hinged with the side rail hinge supports 22 at two ends of the longitudinal beam 2 at the same side through hinge holes and pin shafts at the tail ends of the two upright rods 32.

The inner liner buffer body 5 is filled in an annular cavity (inner liner) surrounded by the inner liner of each tire 4, the inner liner buffer body 5 is made of foamed polyethylene plastics (EPE pearl cotton), and the inner liner buffer body 5 and the inner liner of the tire 4 are in a proper tension state.

The tires 4 containing the inner cushion bodies 5 are sequentially arranged along the longitudinal direction in a vertical posture with the sidewalls in front, the sidewalls of the adjacent tires 4 are close, and the tire crowns below all the tires 4 are supported on the two longitudinal beams 2, so that the tires 4 are coaxially aligned in the transverse direction. As shown in fig. 1 and 2, when the pitches of the side members 2 are different, the heights of the axial lines of the tires 4 are also different, and when the pitches of the side members 2 are small, the axial lines of the tires 4 are high, and when the pitches of the side members 2 are large, the axial lines of the tires 4 are low.

The last two tires 4 at the tail part are completely wrapped and tightened by a rope net 7 woven by flexible high-strength fibers, an inner net buffer column 6 is filled in a cylindrical space enclosed by the front net surface, the rear net surface and the tire bead of the tire 4, the rope net 7, the tire tread of the tire 4 and the end surface of the inner net buffer column 6 are in a proper tension state, and as shown in fig. 4, the inner net buffer column 6 is made of foamed polyethylene plastics (EPE pearl cotton).

Two tires 4 at the tail part covered by the rope net 7 and seven tires 4 at the front part are fastened by four sets of high-strength fiber strapping tapes 8, each set of strapping tape 8 is uniformly distributed along the circumference of the tire 4, each set of strapping tape 8 is strapped around the inner surface, the outer surface and the end part of a tubular combination body formed by nine tires 4, at the tail part of the inner surface of the tubular combination body, the strapping tape 8 passes through meshes of the rope net 7 covering the front end surfaces and the rear end surfaces of the two tires 4 at the tail end and a joint between a tire bead and an inner buffer column 6, and at the outer surface and the tail end surface of the tubular combination body, the strapping tape 8 covers the outside of the rope net 7. In practice, the strap 8 may be used as a tie down assembly for shelf products commonly used in cargo strapping.

The tubular assembly of the tyre 4, bound together by the binding bands 8, is arranged longitudinally close to the front end of the longitudinal beam 2, the front end face of which is close to or in close proximity to the upright 32 in front of the side rail 3, and the rear end face of which is kept at a relatively large distance from the upright 32 behind the side rail 3.

The longitudinal bars 31 of the rails 3 are supported above the crown side of each tire 4, and the longitudinal bars 31 of the rails 3 are mutually tensioned with the front and rear sets of rail links 9. In practice, the side rail connectors 9 may be used as tie down strap assemblies for shelf products commonly used in freight lashing.

A second embodiment of the present invention, a projectile recovery device, is shown in fig. 6. Unlike the first embodiment, the number of the tires 4 and the corresponding cushion bodies 5 is ten, wherein the tire 4 including the cushion body 5 in the tenth embodiment is disposed behind the tire covered with the rope net 7, and the bundling and covering manner of the first 9 tires 4 is completely the same as that of the first embodiment. The second embodiment provides a greater amount of deformation and deformation damping energy consumption and reduces recovery overload when subjected to the first impact of the projectile 100 relative to the first embodiment.

A third embodiment of the present invention, a projectile recovery device, is shown in fig. 7. Different from the first embodiment and the second embodiment, the rope net 7 is replaced by a punching head disk 10, the punching head disk 10 is formed by combining and compounding a light metal disk and a rubber disk, the outer diameter of the punching head disk 10 is not larger than the outer diameter of the tire 4, the punching head disk is longitudinally arranged between the last three tires 4 and the last four tires 4, and the punching head disk is transversely supported on the two longitudinal beams 2. The third embodiment differs from the first and second embodiments in the energy consuming process of deformation of the rear tire 4 and the cushion body 5 when the first impact is applied to the projectile 100.

The utility model may also be embodied in other specific forms, such as:

a) the base 1 is a platform or the ground, and the longitudinal beam 2 is directly fixed on the platform or the ground through a pressure plate or a bottom stud;

b) the cross beams 11 of the base 1 are made of rectangular section profiles, the longitudinal beams 2 are connected with the cross beams 11 in a posture supported on the cross beams 11, and the number of the cross beams 11 can be 4;

c) the two longitudinal beams 2 do not need to be symmetrical relative to the cross beam 11 in the transverse direction, based on the first embodiment, the end plate 21 of one longitudinal beam 2 is matched and connected with two groups of adjacent long holes on the inner side of the cross beam 11, the end plate 21 of the other longitudinal beam 2 is matched and connected with two groups of adjacent long holes on the outer side of the cross beam 11, and the distance between the two longitudinal beams 2 is between the distance between the longitudinal beams 2 in the first use state shown in fig. 1 and the distance between the longitudinal beams 2 in the second use state shown in fig. 2;

d) the two longitudinal beams 2 do not need to be symmetrical relative to the cross beam 11 in the transverse direction, more groups of connecting interfaces between the cross beam 11 of the base 1 and the longitudinal beams 2 are arranged, and each longitudinal beam 2 is connected with the cross beam 11 through different interfaces, so that more cross beam 11 interval combinations can be formed; or each longitudinal beam 2 can be connected with the cross beam 11 at any position on the cross beam 11, so that the distance between the longitudinal beams 2 can be adjusted in a stepless manner;

e) the longitudinal beams 2 which are symmetrically arranged at the left and the right have a proper included angle, and the tires 4 have different specifications; when the distance between the front ends of the longitudinal beams 2 is larger than that between the rear ends, the outer diameter of the front tire 4 is also larger than that of the rear tire 4, and continuously increased friction force can be obtained when each tire 4 moves backwards in the recycling and buffering process; when the distance between the front ends of the longitudinal beams 2 is smaller than that between the rear ends, the outer diameter of the front tire 4 is also smaller than that of the rear tire 4, so that a hole with a large opening and a small abdomen and an approximate cone shape can be obtained, and the rebounding projectile body 100 can be more reliably sealed in the inner cavity of the tire assembly;

f) the longitudinal beam 2 can also adopt a structure which is in a step shape in a horizontal plane, and correspondingly, the tires 4 supported on different sections of the longitudinal beam 2 adopt different specifications;

g) the number of tyres 4 can be greater, so that the tyre assembly fills the space between the front and rear uprights 32 of the side rail 3 in the longitudinal direction;

h) the upright rod 32 of the side rail 3 adopts a telescopic structure with adjustable length;

i) the tail tire 4 is coated by a belt net woven by flexible high-strength fibers;

j) the tail tyre 4 is coated by flexible high-strength fiber cloth;

k) the binding band 8 binding the tire 4 assembly has elasticity.

The working process of the first embodiment of the utility model is as follows: the projectile body 100 is shot into a hole aligned with a tire group hole and impacts on a flexible rope net 7 wrapping a tire 4 at the bottom of the hole to drive the rope net 7 to press the tire 4 in the net, the tire liner buffer body 5 and the tire liner buffer body to move backwards at the same time of changing the energy absorption, the front tire 4 is driven to move backwards together under the action of the strapping tape 8, in the process, the friction between each tire 4 and a longitudinal beam 2 and a longitudinal rod 31 of a side rail 3 further consumes the kinetic energy of the projectile body 100, after the rearmost tire 4 is stopped by a rear upright rod 32 of the side rail 3, the tire 4 in the net, the tire liner buffer body 5 and the cushion body in the net are further extruded to the maximum deformation, the horizontal speed of the projectile body 100 is reduced to 0, then, the tire 4 in the net, the tire liner buffer body 5 and the cushion body in the net generate elastic recovery to rebound the projectile body 100, and the rebound kinetic energy of the projectile body 100 is greatly attenuated due to the fact that the energy absorbed by friction and material deformation damping has been dissipated, the radian of the flight trajectory is enlarged, and finally the flight trajectory falls at the bottom of the holes of the tire set at a larger angle, the inherent deep cavity of the tire 4 and the structure of the steel wire tire bead perform effective stop on the projectile 100 which recoils forwards, and the elasticity and the damping of the tire 4 and the built-in tire cushion body 5 further consume the residual kinetic energy of the projectile 100 until the projectile is completely braked. After recovery, the tensioning connection between the longitudinal rods 31 of the two side rails 3 is released, the two side rails 3 are put down, the binding of the tires 4 is loosened, the corresponding tires 4 are separated, and the recovered projectile 100 can be taken out. The operation of the other embodiments of the present invention is substantially the same as or similar to the operation of the first embodiment described above.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be construed as the protection scope of the present invention.

Claims (6)

1. The projectile recovery device is characterized by comprising a base, a pair of longitudinal beams, a pair of side rails, at least two tires and a strike-on piece, wherein the pair of longitudinal beams are arranged on the base; the two side rails are respectively hinged on the two longitudinal beams; each side rail comprises a longitudinal rod and a pair of vertical rods, the two vertical rods are respectively positioned at the front end and the rear end of the longitudinal rod and are perpendicular to and coplanar with the longitudinal rod, and the tail ends of the two vertical rods are coaxially hinged at the front end and the rear end of the longitudinal beam; the tire is sequentially arranged between the front upright post and the rear upright post of the two side rails along the longitudinal direction in a state that the sidewall is ahead, and the tire is transversely arranged between the two longitudinal beams; the impact piece is arranged between two adjacent tires, and the rear end face of the impact piece covers a hub hole of a tire behind the impact piece and is supported on the sidewall of the tire; the longitudinal bars of the two side rails are supported on the crown of the tire, and the two side rails are mutually tensioned through the side rail connecting pieces.

2. A projectile recovery device as defined in claim 1, wherein: the impact piece is a flexible fiber woven net, and at least one tire at the tail part of all tires is completely covered and fastened by the woven net.

3. A projectile recovery device as defined in claim 2, wherein: the method is characterized in that an in-network buffer column is filled in a cylindrical space defined by one or a plurality of tire beads covered by a flexible fiber woven net, and the in-network buffer column is made of an elastic buffer material.

4. A projectile recovery device as defined in claim 1, wherein: and filling a tire liner buffer body in an annular cavity surrounded by the inner liner of the tire, wherein the tire liner buffer body is made of an elastic buffer material.

5. A projectile recovery device as defined in claim 1, wherein: the tires are bound together through a rope belt, the front side wall of the most front tire is tightly close to the front upright post of the side rail, and the rear side wall of the last tire keeps a distance with the rear upright post of the side rail.

6. A projectile recovery device as defined in claim 1, wherein: the base comprises at least two transverse beams which are arranged along the longitudinal direction, the longitudinal beams are connected with the transverse beams in a detachable connection mode, and at least two groups of connection interfaces of the transverse beams and the longitudinal beams are arranged.

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