Air-drop putting device

Abstract

The invention relates to an air-drop putting device which comprises a base, a chassis, a fixing frame and a turnover mechanism, and the base comprises a cross beam, a track, an auxiliary beam and a stop bolt; the chassis is arranged on a track of the base in a sliding manner, and the stop bolt can prevent the chassis from sliding out of the track; the fixing frame comprises a bottom frame, a U-shaped frame, a hoop and a roller way. The turnover mechanism is arranged at the rear end of the bottom frame in the air-drop direction and connected to the fixing frame and the base plate through bolts. By means of the throwing device, air-drop of thrown objects can be conveniently achieved, the safety coefficient is high, time and labor are saved, and air-drop can be efficiently completed.

Description

Technical Field

[0001] The present invention relates to the field of airdrop devices, and in particular to an airdrop delivery device. Background Art

[0002] Airdrop is widely used in military and civilian applications due to its fast response and precision. It is currently one of the most common methods of material supply. As the types of droplets become more and more diverse, their weights and volumes are also becoming more and more diverse. Therefore, there are more and more personalized demands for delivery devices that can be used for the delivery of droplets, and higher requirements are placed on the convenience of delivery devices. Droplets of 500kg are one of the common types of droplets. It is impossible to drop them out of the cabin by relying solely on manpower, and the bottom of some droplets is in the shape of a spherical crown, which makes it impossible to leave the aircraft autonomously. In view of this, designing a delivery device that can adapt to the above-mentioned types of droplets has become an urgent problem to be solved. Summary of the Invention

[0003] The object of the present invention is to provide an airdrop delivery device that can conveniently realize the airdrop of delivery objects, has a high safety factor, saves time and effort, and can complete the airdrop efficiently.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] An airdrop delivery device includes a base, a chassis, a fixing frame, and a flipping mechanism. The base includes a crossbeam, a track, an auxiliary beam, and a stop bolt. The crossbeams are three in number and arranged at intervals perpendicular to the airdrop direction. The crossbeams are fixed to the cabin floor via bottom plate fixing seats. A track is fixedly installed on the left and right sides of the crossbeams. An auxiliary beam is fixedly installed between the two crossbeams farthest from the airdrop position. The auxiliary beams are provided with initial limit holes and delivery limit holes at intervals.

[0006] The chassis is slidably arranged on the track of the base, and the chassis includes a frame, a pulley group, a rotating shaft and a limit pin. The pulley group is divided into two groups, which are respectively arranged on both sides of the frame. The pulley group can slide freely in the track of the base. A limit pin is provided on the end of the chassis opposite to the airdrop direction, and the limit pin can be inserted into the initial limit hole and the delivery limit hole; a rotating shaft is provided on the frame at the other end opposite to the limit pin, and the rotating shaft is supported on the frame through a rotating shaft seat;

[0007] The fixing frame includes a bottom frame, a U-shaped frame, a clamp and a roller. The U-shaped frame has a preset height and its U-shaped opening is opened on the side close to the airdrop position. An axial hole is provided in the middle of the bottom frame, and the rotating shaft of the chassis can pass through the axial hole. The clamp is arranged on the top of the two opposite sides of the U-shaped frame.

[0008] The flipping mechanism is arranged at the rear end of the bottom frame along the airdrop direction and is connected between the fixing frame and the chassis by using bolts.

[0009] Furthermore, stop bolts are respectively provided at both ends of the track; the crossbeam is an I-shaped beam, and the initial limit hole and the delivery limit hole are 1 meter apart.

[0010] Furthermore, the chassis also includes blocking wheels, which are arranged on both sides of the frame.

[0011] Furthermore, each pulley group includes at least two pairs of pulleys, each pair of pulleys includes two pulleys, the pulleys are rotatably connected to the side walls of the frame, the diameter of the pulleys is smaller than the height of the track groove of the track, and the two pulleys of each pair of pulleys are arranged at different heights. Along the airdrop direction, the lowest point of the first pulley in front of each pair of pulleys abuts against the bottom of the track groove, and the highest point of the second pulley in the back abuts against the top of the track groove.

[0012] Furthermore, the clamp includes a handwheel, a stop screw and an arc-shaped clamping plate, the handwheel is fixed to one end of the stop screw, the stop screw is connected to the U-shaped frame through a threaded hole, the other end of the stop screw is connected to the clamping plate through a rotating connecting seat, and a locking nut is provided on the stop screw.

[0013] Furthermore, a delivery lock is provided on a side of the U-shaped frame opposite to the opening.

[0014] Furthermore, the roller is arranged on the bottom frame and fixed on both sides of the front end of the bottom frame along the airdrop direction. The roller includes a roller rod and a roller rod support frame. The roller rod is arranged and rotatably supported on the roller rod support frame along the airdrop direction, and is used to provide a rolling conveying track for the delivered objects during airdrop; the roller rod support frames of the roller on both sides are tilted.

[0015] Furthermore, the flip mechanism includes a turntable, a screw rod, a first base and a second base. The first base is fixedly connected to the bottom frame, and the second base is fixedly connected to the chassis. The first base includes a support seat and a stud. A threaded hole is opened in the middle of the stud. The stud is rotatably connected to the support seat through the rotating shaft on both sides thereof. A turntable is fixedly provided at one end of the screw rod, and a sphere is fixedly provided at the other end. A ball joint structure is formed between the sphere and the second base. The screw rod is threadedly connected to the stud. A limit nut is also provided on the screw rod.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] 1. The delivery device of the present invention is provided with a unique flipping mechanism including a screw, a stud and a ball joint structure, which can realize the conversion of the rotation of the screw into the tilting and flipping of the fixed frame, which is both convenient and labor-saving. After reaching the delivery position, the delivery object can be flipped to a certain angle, which further helps the delivery object to leave the cabin. At the same time, the design of the inclined roller can realize the sliding of delivery objects with a spherical crown or other arc-shaped bottom, and the inclined roller helps to prevent such delivery objects from tipping over.

[0018] 2. By setting limit holes and limit pins on the fixing frame and chassis respectively, the chassis can be fixed in different stages of the aircraft flight and airdrop process, making the delivery device more stable.

[0019] 3. By installing a U-shaped frame of a certain height and attaching a clamp and a release lock to it, the object can be secured from three sides, making it more secure. Furthermore, because the clamp and release lock secure the center of the object, compared to securing the bottom, the object is more stable and less likely to tip over. Furthermore, the release lock allows for quick unlocking of the object during release.

[0020] 4. The delivery device of the present invention is suitable for airdropping of 500kg-level objects. While saving manpower, it has high delivery efficiency and strong safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0022] Figure 1 Schematic diagram of the overall structure of the airdrop device according to the present invention;

[0023] Figure 2 is an overall side view of the airdrop device according to the present invention;

[0024] Figure 3 A schematic diagram of the base structure according to the present invention;

[0025] Figure 4 A schematic diagram of the structure of the connection between the base and the chassis according to the present invention;

[0026] Figure 5 A schematic diagram of the structure of the connection between the chassis and the fixing frame according to the present invention;

[0027] Figure 6 A schematic diagram of the rear structure of the chassis and the fixing frame connected according to the present invention;

[0028] Figure 7 A schematic structural diagram of a turning mechanism according to the present invention;

[0029] Figure 8 Schematic diagram of the structure of the flip mechanism according to the present invention (excluding the second base). DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0031] like Figure 1-5 As shown, the present invention provides an airdrop delivery device, comprising a base 1, a chassis 2, a fixing frame 3, and a flipping mechanism 4. The base 1 includes a crossbeam 101, a track 102, an auxiliary beam 103, and a stop bolt 104. Three crossbeams 101 are spaced apart perpendicular to the airdrop direction. Each crossbeam 101 is secured to the cabin floor via a baseplate fixing seat. A track 102 is fixedly mounted on each left and right side of the crossbeam 101. An auxiliary beam 103 is fixedly mounted between the two crossbeams 101 furthest from the airdrop location. Initial stop holes 105 and delivery stop holes 106 are spaced apart on the auxiliary beam 103. Stop bolts 104 are provided at each end of the track 102. Furthermore, the crossbeam 101 is an I-shaped beam, and the initial stop hole 105 and delivery stop hole 106 are spaced one meter apart.

[0032] The chassis 2 is slidably arranged on the track 102 of the base 1, and the stop bolt 104 can prevent the chassis 2 from sliding out of the track 102. The chassis 2 includes a skeleton 201, a pulley group 202, a stop wheel 203, a rotating shaft 204 and a limit pin 205. The pulley group 202 is divided into two groups, which are respectively arranged on both sides of the skeleton 201. The pulley can be composed of a pressure bearing and can slide freely in the track 102 of the base 1; the stop wheel 203 is arranged on both sides of the skeleton 201 to prevent the chassis 2 from sliding out of the track 102. The disc 2 rocks left and right or gets stuck during the sliding process in the track 102, thereby improving the sliding stability of the chassis 2; a limit pin 205 is provided on the end of the chassis 2 opposite to the airdrop direction, and when the chassis 2 moves into position, the limit pin 205 is inserted into the initial limit hole 105 or the delivery limit hole 106 to limit and fix it; a rotating shaft 204 is provided on the other end of the frame 201 opposite to the limit pin 205, and the rotating shaft 204 is supported on the frame 201 through the rotating shaft 204 seat.

[0033] In some optional embodiments, each pulley assembly 202 includes at least two pairs of pulleys, each pair of pulleys includes two pulleys, the pulleys are rotatably connected to the side walls of the skeleton, the diameter of the pulleys is smaller than the height of the track groove 1021 of the track 102, and the two pulleys of each pair of pulleys are arranged at different heights. Along the airdrop direction, the lowest point of the first pulley 2021 in front of each pair of pulleys abuts against the bottom of the track groove 1021, and the highest point of the second pulley 2022 in the back abuts against the bottom of the track groove 1021. The tops of the pulleys are in contact with each other; when the pulley assembly 202 is installed into the track 102, since the diameter of each pulley is smaller than the height of the track groove 1021, and the first pulley 2021 in front is in contact with the bottom of the track groove 1021 for guidance, the pulleys can be easily inserted into the track groove 1021. In addition, the two pulleys of each pair of pulleys are arranged at different heights and are respectively in contact with the top and bottom of the track groove 1021, thereby limiting the height direction of the skeleton 201 and avoiding shaking of the skeleton 201 during movement.

[0034] The fixing frame 3 includes a bottom frame 301, a U-shaped frame 302, a clamp 303 and a roller 304. The U-shaped frame 302 has a preset height and its U-shaped opening is opened on the side close to the airdrop position. An axial hole is provided in the middle of the bottom frame 301, and the rotating shaft 204 of the chassis 2 can pass through the axial hole, so that the fixing frame 3 can rotate relative to the chassis 2 through the cooperation of the rotating shaft 204 and the axial hole; the clamp 303 is arranged on the top of the two opposite sides of the U-shaped frame 302, and the clamp 303 includes a handwheel 3031, a stop screw 3032 and an arc-shaped splint 3033, the handwheel 3031 is fixed to one end of the stop screw 3032, the stop screw 3032 is connected to the U-shaped frame 302 through a threaded hole, and the other end of the stop screw 3032 is connected to the splint 3033 through a rotating connecting seat. 33. A locking nut is provided on the stop screw 3032; by turning the handwheel 3031, the stop screw 3032 is driven to move toward the object 5 with the help of the cooperation between the stop screw 3032 and the thread. Since the stop screw 3032 and the clamping plate 3033 are connected by a rotating connecting seat, when the stop screw 3032 is rotated, the clamping plate 3033 does not rotate. Therefore, the handwheel 3031 can drive the clamping plate 3033 to move toward the object 5 to lock the object 5. When the stop screw 3032 pushes the clamping plate 3033 to the predetermined position to clamp the object 5, the stop screw 3032 is locked by the locking nut to prevent the clamping from loosening; a delivery lock 305 is also provided on the side of the U-shaped frame 302 opposite to the opening. The delivery lock 305 belongs to the prior art and is not described here.

[0035] The roller 304 is arranged on the bottom frame 301 and fixed on both sides of the front end of the bottom frame 301 along the airdrop direction. The roller 304 includes a roller 3041 and a roller support frame 3042. The roller 3041 is arranged and rotatably supported on the roller support frame 3042 along the airdrop direction, and is used to provide a rolling conveying track 102 for the delivered objects during airdrop; the roller support frames of the rollers 304 on both sides are tilted, and the angle formed by the tilt between the two roller support frames 3042 is preferably 130 degrees; the tilted roller 304 can adapt to the rolling transmission of the delivered objects 5 with a spherical crown shape or other curved surface shape at the bottom. During the transmission process, the tilted roller support frame can provide lateral support force for the delivered objects 5 to prevent the delivered objects 5 from tipping over. Compared with the horizontally arranged roller 304, the tilted roller 304 is more adaptable to the transmission of the delivered objects 5 with a spherical crown shape or other curved surface shape at the bottom.

[0036] like Figure 6-8 As shown, the flip mechanism 4 is arranged at the rear end of the bottom frame 301 along the airdrop direction and is connected to the fixing frame 3 and the chassis 2 by bolts. The flip structure includes a turntable 401, a screw rod 402, a first base 403 and a second base 404. The first base 403 is fixedly connected to the bottom frame 301, and the second base 404 is fixedly connected to the chassis 2. The first base 403 includes a support base 4031 and a stud 4032. The support base 4031 is a bilaterally symmetrical structure. Figure 7-8 Only one side of the support base 4031 is shown. A threaded hole is provided in the middle of the stud 4032. The stud 4032 is connected to the rotating shaft 4033 ( Figure 7-8 Only the rotating shaft 4033 on one side of the stud 4032 is shown, which is rotatably connected to the support base 4031. One end of the screw rod 402 is fixedly provided with a turntable 401, and the other end is fixedly provided with a ball 405. A ball joint structure is formed between the ball 405 and the second base 404. The screw rod 402 is connected with the thread of the stud 4032. When the turntable 401 is rotated, the screw rod 402 cooperates with the threaded hole to drive the first base 403 to rise and fall, thereby driving the fixing frame 3 to rotate around the rotating shaft on the chassis 2. 204 is rotated to realize the flipping of the fixing frame 3 relative to the chassis 2. Here, the screw rod 402 is combined with the rotatable stud 4032 and the ball joint structure. This unique design converts the rotation of the screw rod 402 into the tilting rotation of the fixing frame 3, which is both convenient and labor-saving. Furthermore, a limiting nut 406 is also provided on the screw rod 402. After the fixing frame 3 is flipped into place, the limiting nut 406 is used to limit and lock the flipping angle, so that the flipping angle can be freely selected between 0 and 10 degrees as needed.

[0037] To facilitate understanding of the airdrop delivery device of the present invention, the working principle and process of the airdrop delivery device are described in detail below:

[0038] The delivery device is connected to the aircraft floor through the base 1 to ensure that the delivery device and the aircraft floor are reliably fixed. During takeoff and flight, the delivery device is tied to the tie-down ring on the aircraft floor by the tie-down steel cable on the aircraft. One end of each steel cable is connected to the upper part of the fixing frame 3, and the other end is tied to the tie-down ring on the aircraft floor. The chassis 2 is positioned in the initial limit hole 105 near the rear end of the base 1 by the limit pin 205 to prevent the fixing frame 3 from sliding relative to the track 102. When the aircraft arrives at the predetermined airspace and is ready for delivery, the tie-down steel cable is released, the limit pin 205 is pulled out from the initial limit hole 105, and the fixing frame 3 is moved in the cabin with the help of the original aircraft winch. Specifically, the fixing frame 3 tends to move toward the rear door due to its own gravity. To prevent it from moving too quickly, the original aircraft winch steel cable is connected to the bottom of the fixing frame 3, and the winch is manually operated to tighten the winch steel cable to make the fixing frame 3 move slowly until it moves to the delivery position. At this time, the limit pin 205 is inserted into the delivery limit Furthermore, to prevent the fixing frame 3 from accidentally falling out of the cabin during movement, another original aircraft mooring cable is connected at one end to the bottom of the fixing frame 3 and at the other end to a mooring ring on the aircraft floor. The cable is substantially parallel to the floor. When the delivery device is in the flight position, the cable is in a relaxed state. When the delivery device is in the delivery position, the cable is just in a taut state, thereby preventing the fixing frame 3 from accidentally falling out of the cabin. When the fixing frame 3 reaches the delivery position, the clamp 303 and the delivery lock are released to fix the delivery object 5. The turntable 401 of the flipping mechanism 4 is rotated to drive the fixing frame 3 to a predetermined flip angle. At this time, the delivery object 5 is tilted and lifted. Under the action of gravity, the delivery object 5 is thrown out of the cabin along the roller 304. After the delivery object 5 leaves the aircraft, the limit pin 205 is pulled out and the winch is operated to pull the fixing frame 3 back. After reaching the flight position, the limit pin 205 is inserted into the initial limit hole 105 to lock the winch, thus completing an airdrop.

[0039] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An airdrop delivery device, characterized in that: The invention comprises a base (1), a chassis (2), a fixing frame (3) and a turning mechanism (4); the base (1) comprises a crossbeam (101), a track (102), an auxiliary beam (103) and a stop bolt (104); the crossbeams (101) are three in number and are arranged at intervals perpendicular to the airdrop direction; the crossbeams (101) are fixed to the cabin floor via a bottom plate fixing seat; a track (102) is fixedly mounted on the left and right sides of the crossbeam (101); an auxiliary beam (103) is fixedly arranged between the two crossbeams (101) farthest from the airdrop position; and initial limiting holes (105) and delivery limiting holes (106) are spaced apart on the auxiliary beam (103); The chassis (2) is slidably arranged on the track (102) of the base (1). The chassis (2) comprises a frame (201), a pulley block (202), a rotating shaft (204) and a limiting pin (205). The pulley block (202) is divided into two groups and is respectively arranged on both sides of the frame (201). The pulley block (202) can slide freely in the track (102) of the base (1). A limiting pin (205) is arranged on the end of the chassis (2) opposite to the airdrop direction. The limiting pin (205) can be inserted into the initial limiting hole (105) and the delivery limiting hole (106). A rotating shaft (204) is provided on the frame (201) at the other end opposite to the limiting pin (205). The rotating shaft (204) is supported on the frame (201) through a rotating shaft seat. The fixing frame (3) comprises a bottom frame (301), a U-shaped frame (302), a clamp (303) and a roller (304); the U-shaped frame (302) has a preset height and its U-shaped opening is opened on a side close to the airdrop position; an axial hole is provided in the middle of the bottom frame (301), and the rotating shaft (204) of the chassis (2) can pass through the axial hole; the clamp (303) is arranged on the top of two opposite sides of the U-shaped frame (302); The flip mechanism (4) is arranged at the rear end of the bottom frame (301) along the airdrop direction, and is connected between the fixing frame (3) and the chassis (2) by bolts.

2. The airdrop delivery device according to claim 1, characterized in that: Stop screws (3032) are respectively provided at both ends of the track (102); the crossbeam (101) is an "I" beam, and the distance between the initial limiting hole (105) and the delivery limiting hole (106) is 1 meter.

3. The aerial delivery device according to claim 1, characterized in that: The chassis (2) further comprises blocking wheels (203), and the blocking wheels (203) are arranged on both sides of the frame (201).

4. The aerial delivery device according to claim 1, characterized in that: Each pulley group (202) includes at least two pairs of pulleys, and each pair of pulleys includes two pulleys. The pulleys are rotatably connected to the side walls of the frame. The diameter of the pulleys is smaller than the height of the track groove (1021) of the track (102). The two pulleys of each pair of pulleys are arranged at different heights. Along the airdrop direction, the lowest point of the first pulley (2021) in front of each pair of pulleys abuts against the bottom of the track groove (1021), and the highest point of the second pulley (2022) in the back abuts against the top of the track groove (1021).

5. The aerial delivery device according to claim 1, characterized in that: The clamp (303) comprises a handwheel (3031), a stop screw (3032) and an arc-shaped clamping plate (3033); the handwheel (3031) is fixed to one end of the stop screw (3032); the stop screw (3032) is connected to the U-shaped frame (302) through a threaded hole; the other end of the stop screw (3032) is connected to the clamping plate (3033) through a rotating connecting seat; and a locking nut is provided on the stop screw (3032).

6. The aerial delivery device according to claim 1, characterized in that: A delivery lock (305) is also provided on the side of the U-shaped frame (302) opposite to the opening.

7. The aerial delivery device according to claim 1, characterized in that: The roller conveyor (304) is arranged on the bottom frame (301) and fixed on both sides of the front end of the bottom frame (301) along the airdrop direction. The roller conveyor (304) includes roller rods (3041) and roller rod support frames (3042). The roller rods (3041) are arranged and rotatably supported on the roller rod support frames (3042) along the airdrop direction, and are used to provide a rolling conveying track for the delivered objects during airdrop. The roller rod support frames (3042) on both sides of the roller conveyor (304) are arranged obliquely.

8. The airdrop delivery device according to claim 1, characterized in that: The turning mechanism (4) comprises a turntable (401), a screw rod (402), a first base (403) and a second base (404), wherein the first base (403) is fixedly connected to the bottom frame (301), and the second base (404) is fixedly connected to the chassis (2). The first base (403) comprises a support seat (4031) and a stud (4032), wherein a threaded hole is provided in the middle of the stud (4032), and the stud (4032) is rotatably connected to the support seat (4031) via rotating shafts (4033) on both sides thereof. The turntable (401) is fixedly provided at one end of the screw rod (402), and a sphere (405) is fixedly provided at the other end, wherein a spherical joint structure is formed between the sphere (405) and the second base (404), and the screw rod (402) is threadedly connected to the stud (4032); and a limiting nut (406) is also provided on the screw rod (402).

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