A helicopter external material spreading device

Abstract

The present application relates to the field of material spreading devices, and in particular to a helicopter external material spreading device, comprising a material box body mounted on a frame, a discharging barrel and a plurality of lifting ears being arranged on the material box body, a rotating shaft being rotatably connected to the frame below the discharging barrel, one end of the rotating shaft being located in the discharging barrel, the rotating shaft being coaxially arranged with the discharging barrel, a plurality of sliding blocks being hinged on the rotating shaft, a plurality of spring sheets being arranged in the sliding blocks, a limiting block being fixed on the inner wall of the discharging barrel, the sliding block being slidably connected to the inner wall of the discharging barrel, the sliding block being slidably connected to the limit block toward one side of the rotating shaft, a driving assembly for driving the rotating shaft to rotate is arranged on the frame, and the present application has the effect of reducing the possibility of material blocking the discharging barrel.

Description

Technical Field

[0001] The present application relates to the field of material spreading devices, and in particular to a helicopter external material spreading device. Background Art

[0002] Helicopter seeding is a planting technology that uses aerial seeding. Its advantages are fast speed, high efficiency and low cost. It can be used in marginal mountainous areas and wilderness areas with inconvenient transportation, sparse population and other places where other seeding methods are difficult to implement.

[0003] The helicopter external material spreading device in the related technology includes a material box, a material box body is provided with a plurality of lifting ears for connecting to the helicopter through a lifting rope, a material feed port is provided at the top of the material box, and a spreading port is provided at the bottom of the material box. The spreading port is connected to a plurality of inclined discharge barrels. The material is loaded in the material box and spread out in different directions after passing through each discharge barrel.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the above-mentioned spreading device has the problem of materials blocking the spreading port, and there is room for improvement. Summary of the invention

[0005] In order to reduce the possibility of materials clogging the inner cavity of the discharge barrel, the present application provides a helicopter external material spreading device.

[0006] The present application provides a helicopter external material spreading device, which adopts the following technical solution:

[0007] A helicopter external material spreading device comprises a material box body mounted on a frame, a material box body is provided with a discharge barrel and a plurality of lifting ears, the frame is rotatably connected with a rotating shaft located below the discharge barrel, one end of the rotating shaft is located in the discharge barrel, the rotating shaft and the discharge barrel are coaxially arranged, a plurality of sliding blocks are hinged on the rotating shaft, a plurality of spring sheets are installed in the sliding blocks, a limiting block is fixed on the inner wall of the discharge barrel, the sliding block is slidably connected to the inner wall of the discharge barrel, the sliding block is slidably connected to the limit block toward one side of the rotating shaft, and a driving component for driving the rotating shaft to rotate is provided on the frame.

[0008] By adopting the above technical solution, the driving component drives the rotating shaft to rotate, and the sliding block rotates in the inner cavity of the discharge barrel. The setting of the limit block causes the distance between the sliding block and the outer wall of the rotating shaft to change. During the sliding process of the sliding block, the spring sheet is in a compressed state. Under the action of the rebound force of the spring sheet, the distance between the sliding block and the outer wall of the rotating shaft changes. The change in the distance between the sliding block and the outer wall of the rotating shaft can prevent a large amount of material from falling at one time, and on the other hand, reduce the effect of reducing the material blocking the inner cavity of the discharge barrel.

[0009] Optionally, the driving assembly includes a driving motor mounted on a frame, a first pulley coaxially fixed on a rotating shaft of the driving motor, and a second pulley coaxially fixed on a rotating shaft, wherein a transmission belt is wound around the first pulley and the second pulley.

[0010] By adopting the above technical solution, the drive motor is electrically connected to the external power supply, the drive motor is started, the rotation shaft of the drive motor drives the first pulley to rotate, the rotation of the first pulley drives the transmission belt, and the second pulley rotates, thereby rotating the rotating shaft.

[0011] Optionally, an anti-wear layer is fixed on the inner wall of the discharge barrel, an anti-wear layer is also fixed on the side of the limit block facing the rotating shaft, and the end of the sliding block facing away from the rotating shaft is slidably connected to the side wall of the anti-wear layer.

[0012] By adopting the above technical solution, the anti-wear layer adopts alumina ceramics, which has high hardness and high temperature resistance. The setting of the anti-wear layer plays a role in protecting the inner wall of the discharge barrel and reducing the wear of the inner wall of the discharge barrel during the continuous friction of the sliding block.

[0013] Optionally, a spreading paddle is coaxially connected to the outer wall of the rotating shaft, and the spreading paddle is located below the sliding block. A baffle plate is coaxially fixed to the rotating shaft, and the baffle plate is located below the spreading paddle.

[0014] By adopting the above technical solution, the material falls on the spreading paddle through the discharge barrel, and the spreading paddle breaks the material up to all sides so that the material can be dispersed more evenly, thereby improving the uniformity of material spreading; the baffle can reduce the possibility of the material falling directly without being broken up by the spreading paddle, thereby further improving the uniformity of material spreading.

[0015] Optionally, a plug-in seam is opened on the side wall of the discharge barrel, a sealing plate is slidably connected in the plug-in seam, an electric cylinder is fixed on the frame, and a piston rod of the electric cylinder is fixedly connected to the side wall of the sealing plate.

[0016] By adopting the above technical solution, the electric cylinder is electrically connected to the external power supply, and the electric cylinder is started. The piston rod of the electric cylinder slides, driving the sealing plate to slide in the plug-in seam. When the sealing plate is located in the inner cavity of the discharge barrel, the discharge barrel is in a blocked state. When the sealing plate moves out of the plug-in seam, both ends of the discharge barrel are connected to the outside world, and the material in the material box body passes through the discharge barrel.

[0017] Optionally, a connecting rod is coaxially fixed to one end of the rotating shaft away from the second pulley, a plurality of connecting rods are fixed on the outer wall of the rotating rod, and a blade is rotatably connected to one end of the connecting rod away from the connecting rod.

[0018] By adopting the above technical solution, during the rotation of the rotating shaft, the connecting rod rotates in the material box body, driving the connecting rod to rotate, and driving the blades to rotate in the material box body, thereby stirring the material in the material box body to reduce the possibility of material compaction and clogging the discharge barrel. The blades are connected to the connecting rod to reduce the wear of the material during the rotation of the blades.

[0019] Optionally, two air blocking plates are arranged on the side wall of the material box body, and the sides of the two air blocking plates close to the material box body are tangent to the side wall of the material box body, and the ends of the two air blocking plates facing away from the material box body are detachably connected.

[0020] By adopting the above technical solution, the possibility of the airflow around the material box body forming a circulation can be reduced by two wind blocking plates, thereby reducing the possibility of the material box body rotating or shaking under the action of the circulation. On the one hand, the material can fall stably from the discharge barrel to the spreading paddle for spreading, and on the other hand, it can also reduce the possibility that the rotation or shaking of the material box body will adversely affect the flight state of the helicopter.

[0021] Optionally, a cover plate is rotatably connected to the upper opening of the material box body, and a handle is fixed to the side of the cover plate facing away from the inner cavity of the material box body.

[0022] By adopting the above technical solution, the setting of the cover plate blocks the opening of the material box body to prevent the material from being stirred out of the material box body during the mixing process, and the setting of the handle makes it convenient for the staff to hold and open the cover plate.

[0023] Optionally, a storage box is provided on the side wall of the material box body.

[0024] By adopting the above technical solution, the helicopter usually works in the field and needs to be transported to the designated location by a carrier vehicle before being assembled and used. The required tools can be placed in the storage box for easy use by the staff.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When sowing is required, the driving assembly drives the rotating shaft to rotate, so that the sliding block slides in the discharge barrel. During the sliding process, the spring sheet is in a compressed state. Under the rebound force of the spring sheet, the distance between the sliding block and the outer wall of the rotating shaft changes, and the material falls through the changing gap. The gap between the sliding block and the rotating shaft changes, which reduces the blockage and controls the two sides of the falling material.

[0027] 2. The drive assembly drives the rotating shaft to rotate the spreading paddle, and the material falls on the spreading paddle through the discharge barrel. The baffle can reduce the possibility of the material falling directly without being broken up by the spreading paddle. The spreading paddle breaks up the material in all directions so that the material can be spread more evenly on the land.

[0028] 3. The two wind-blocking plates can reduce the possibility of the airflow around the material box body forming a circulation, thereby reducing the possibility of the material box body rotating or shaking under the action of the circulation. On the one hand, the material can fall stably from the discharge barrel to the spreading paddle for spreading. On the other hand, it can also reduce the possibility of the rotation or shaking of the material box body causing adverse effects on the flight state of the helicopter.

[0029] 4. The setting of the sliding block reduces the possibility of material blocking the discharge barrel. The setting of the connecting rod, connecting rod and blades reduces the possibility of material blocking the discharge barrel, so that the material can fall in small amounts while more effectively reducing the blockage of the discharge barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the spreading device in this application.

[0031] Figure 2 It is a cross-sectional view of the material box body in this application, which is used to show the internal structure of the material box body.

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0033] Figure 4 It is a schematic diagram of the structure at the installation disk position in this application.

[0034] Figure numerals: 1, frame; 2, material box body; 21, discharge barrel; 22, lifting ear; 3, rotating shaft; 31, sliding block; 311, spring sheet; 211, limit block; 4, driving assembly; 41, driving motor; 42, first pulley; 43, second pulley; 421, transmission belt; 212, anti-wear layer; 32, spreading paddle; 33, baffle; 213, plug-in seam; 2131, blocking plate; 11, electric cylinder; 34, connecting rod; 341, connecting rod; 342, blade; 35, wind block plate; 23, cover plate; 231, handle; 24, storage box; 25, feed port; 12, mounting plate; 13, fixing frame; 36, mounting plate; 312, clamping groove; 37, mounting ring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The embodiment of the present application discloses a helicopter external material spreading device.

[0037] Reference Figure 1 A helicopter external material spreading device includes a frame 1 and a material box body 2 installed on the frame 1. A feeding port 25 is provided on the side of the material box body 2 facing away from the frame 1. A cover plate 23 for closing the feeding port 25 is hinged on the material box body 2. A handle 231 is installed on the side of the cover plate 23 facing away from the material box body 2. A staff member holds the handle 231 and rotates the cover plate 23 in a direction away from the material box body 2 to open the material box body 2 and load the material into the material box body 2.

[0038] Reference Figure 1 A number of lifting ears 22 are welded and fixed on the side wall of the material box body 2. In the present application, three lifting ears 22 are arranged. The staff passes the lifting rope through the lifting ears 22 and fixes it on the helicopter to connect the material body with the helicopter; two wind blocking plates 35 are hinged on the side wall of the material body, and the two wind blocking plates 35 are fixed together by bolts on the side facing away from the material box body 2. The ends of the two wind blocking plates 35 connected to each other are located on the leeward side of the material box body 2. The arrangement of the wind blocking plates 35 prevents the material box body 2 from forming a circulation at high altitude, thereby making the movement of the material box body 2 more stable.

[0039] Reference Figure 2 The bottom of the material box body 2 is connected to the discharge barrel 21, and a joint seam 213 is opened on the side wall of the discharge barrel 21, and a sealing plate 2131 is inserted in the joint seam 213. The electric cylinder 11 is fixed to the frame 1 by bolts, and the piston rod of the electric cylinder 11 is welded and fixed to the side of the sealing plate 2131 facing away from the joint seam 213. The electric cylinder 11 is electrically connected to the external power supply, and the electric cylinder 11 is started. The piston rod of the electric cylinder 11 slides and inserts the sealing plate 2131 into the joint seam 213, thereby limiting the material from falling from the discharge barrel 21; when the piston rod of the electric cylinder 11 moves in the opposite direction, the discharge barrel 21 is opened, and the material falls from the discharge barrel 21.

[0040] Reference Figure 1 and Figure 2A mounting plate 12 is welded and fixed on the frame 1, and the mounting plate 12 is located below the discharge barrel 21. A rotating shaft 3 is connected to the mounting plate 12 through a bearing, and one end of the rotating shaft 3 facing the material box body 2 is located in the discharge barrel 21. A driving assembly 4 for driving the rotating shaft 3 to rotate is provided on the frame 1, and a fixing frame 13 is fixed to the frame 1 by bolts. The driving assembly 4 includes a driving motor 41 fixed to the fixing frame 13 by bolts, and the rotating shaft of the driving motor 41 is rotatably connected to the fixing frame 13, and also includes a first pulley 42 coaxially fixed on the rotating shaft of the driving motor 41, and a second pulley 43 coaxially fixed on the rotating shaft 3. A transmission belt 421 is wound around the first pulley 42 and the second pulley 43. The driving motor 41 is electrically connected to an external power supply, and the driving motor 41 is started. The rotating shaft of the driving motor 41 rotates, and under the action of the transmission belt 421, the second pulley 43 rotates, thereby rotating the rotating shaft 3.

[0041] Reference Figure 3 and Figure 4 A mounting plate 36 is coaxially fixed on the outer wall of the rotating shaft 3, and a plurality of sliding blocks 31 are rotatably connected at the edge of the mounting plate 36. In the present application, six sliding blocks 31 are provided, and a clamping groove 312 is opened in the thickness direction of the sliding block 31. A spring sheet 311 is integrally fixed to the position corresponding to the sliding block 31 on the mounting plate 36, and one end of the spring sheet 311 away from the mounting plate 36 is located in the clamping groove 312. A limiting block 211 is welded and fixed on the inner wall of the discharge barrel 21. The limiting block 211 is arranged in an arc shape toward one side of the rotating shaft 3. There is a fixed anti-wear layer 212, and the side of the limit block 211 facing the rotating shaft 3 is also integrally fixed with the anti-wear layer 212. In the present application, the anti-wear layer 212 is made of alumina ceramics. During the rotation of the rotating shaft 3, the sliding block 31 is slidably connected to the side wall of the anti-wear layer 212. The setting of the limit block 211 makes the spring sheet 311 compressed during the rotation of the sliding block 31. Under the joint action of the rebound force of the spring sheet 311 and the limit block 211, the distance between the sliding block 31 and the mounting plate 36 changes, so that the material falls in an appropriate amount and prevents the material from clogging the inner cavity of the discharge barrel 21.

[0042] Reference Figure 2 and Figure 3 A connecting rod 34 is welded and fixed to one end of the rotating shaft 3 facing the inner cavity of the material box body 2. The connecting rod 34 is coaxially arranged with the rotating shaft 3. A plurality of connecting rods 341 are welded and fixed to the outer wall of the connecting rod 34. In the present application, four connecting rods 341 are arranged. The ends of the four connecting rods 341 facing away from the connecting rods 34 are hinged with blades 342. The connecting rod 34 is driven to rotate during the rotation of the rotating shaft 3. The connecting rod 341 and the blades 342 stir the material in the material box body 2 to reduce the possibility of material compaction and clogging of the discharge barrel 21.

[0043] Reference Figure 2and Figure 3 A mounting ring 37 is coaxially fixed to one end of the rotating shaft 3 away from the material box body 2, and a plurality of spreading paddles 32 are welded and fixed to the outer wall of the mounting ring 37. In the present application, six spreading paddles 32 are arranged, and the rotation of the rotating shaft 3 drives the spreading paddles 32 to rotate. The material passes through the discharge barrel 21 and falls on the spreading paddles 32. The spreading paddles 32 scatter the material to all sides, so that the material can be dispersed more evenly, thereby improving the uniformity of material spreading.

[0044] Reference Figure 1 A baffle plate 33 is coaxially fixed to one end of the rotating shaft 3 away from the material box body 2. The baffle plate 33 is located below the spreading paddle 32. The baffle plate 33 can reduce the possibility of the material falling directly without being broken up by the spreading paddle 32, thereby further improving the uniformity of material spreading.

[0045] Reference Figure 1 A storage box 24 is welded and fixed on the side wall of the material box body 2. Since the helicopter usually works in the field, it needs to be transported to the designated location by a carrier vehicle and then assembled for use. The tools needed to assemble the helicopter and the bolts and other parts used to connect the two wind blocking plates 35 can be placed in the storage box 24, which is convenient for the staff to store and use.

[0046] The implementation principle of a helicopter external material spreading device in the embodiment of the present application is as follows: before spreading, the electric cylinder 11 is started, and the piston rod of the electric cylinder 11 slides, driving the sealing plate 2131 to move to the side away from the inner cavity of the discharge barrel 21, and the inner cavity of the discharge barrel 21 is opened, and the drive motor 41 is started. The rotation of the rotating shaft of the drive motor 41 drives the first pulley 42 to rotate, and the rotation of the first pulley 42 drives the transmission belt 421 to drive the second pulley 43 to rotate, thereby rotating the rotating shaft 3, and the connecting rod 34 and the blade 342 stir the material installed in the material box body 2, and the sliding block 31, the spreading paddle 32 and the baffle plate 33 all rotate, and the distance between the sliding block 31 and the mounting plate 36 changes, thereby reducing the possibility of material blocking the inner cavity of the discharge barrel 21, and the material enters the discharge barrel 21 and falls on the spreading paddle 32. The spreading paddle 32 scatters the material to the surroundings, so that the material can be dispersed more evenly, thereby improving the uniformity of material spreading.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A helicopter external material spreading device, comprising a material box body (2) mounted on a frame (1), the material box body (2) being provided with a discharge barrel (21) and a plurality of lifting ears (22), characterized in that: A rotating shaft (3) is rotatably connected to the frame (1) below the discharging barrel (21), one end of the rotating shaft (3) is located in the discharging barrel (21), the rotating shaft (3) and the discharging barrel (21) are coaxially arranged, a plurality of sliding blocks (31) are hinged on the rotating shaft (3), a plurality of the sliding blocks (31) are provided with spring sheets (311), a limiting block (211) is fixed on the inner wall of the discharging barrel (21), the sliding block (31) is slidably connected to the inner wall of the discharging barrel (21), the sliding block (31) is slidably connected to the limiting block (211) toward one side of the rotating shaft (3), and a driving component (4) for driving the rotating shaft (3) to rotate is arranged on the frame (1); A plug-in seam (213) is provided on the side wall of the discharge barrel (21), a sealing plate (2131) is slidably connected in the plug-in seam (213), an electric cylinder (11) is fixed on the frame (1), and a piston rod of the electric cylinder (11) is fixedly connected to the side wall of the sealing plate (2131).

2. A helicopter external material spreading device according to claim 1, characterized in that: The driving assembly (4) comprises a driving motor (41) mounted on a frame (1), a first pulley (42) coaxially fixed on a rotating shaft of the driving motor (41), and a second pulley (43) coaxially fixed on a rotating shaft (3), wherein a transmission belt (421) is wound around the first pulley (42) and the second pulley (43).

3. The helicopter external material spreading device according to claim 1, characterized in that: An anti-wear layer (212) is fixed on the inner wall of the discharge barrel (21), an anti-wear layer (212) is also fixed on the side of the limit block (211) facing the rotating shaft (3), and an end of the sliding block (31) facing away from the rotating shaft (3) is slidably connected to the side wall of the anti-wear layer (212).

4. The helicopter external material spreading device according to claim 1, characterized in that: A spreading paddle (32) is coaxially connected to the outer wall of the rotating shaft (3), and the spreading paddle (32) is located below the sliding block (31). A baffle plate (33) is coaxially fixed to the rotating shaft (3), and the baffle plate (33) is located below the spreading paddle (32).

5. The helicopter external material spreading device according to claim 2, characterized in that: A connecting rod (34) is coaxially fixed to one end of the rotating shaft (3) away from the second pulley (43), a plurality of connecting rods (341) are fixed on the outer wall of the connecting rod (34), and a blade (342) is rotatably connected to one end of the connecting rod (341) away from the connecting rod (34).

6. The helicopter external material spreading device according to claim 1, characterized in that: Two wind blocking plates (35) are arranged on the side wall of the material box body (2); the side of the two wind blocking plates (35) close to the material box body (2) is tangent to the side wall of the material box body (2); and the ends of the two wind blocking plates (35) facing away from the material box body (2) are detachably connected.

7. The helicopter external material spreading device according to claim 1, characterized in that: A cover plate (23) is rotatably connected to the upper opening of the material box body (2), and a handle (231) is fixed to the side of the cover plate (23) facing away from the inner cavity of the material box body (2).

8. The helicopter external material spreading device according to claim 1, characterized in that: A storage box (24) is provided on the side wall of the material box body (2).

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