Double-fan-blade grain leveling device

Abstract

The utility model relates to the technical field of granary management, in particular to a double-fan-blade grain leveling device. The grain leveling device is provided with the moving trolley, the driving component and the fan blade assembly, the moving trolley drives the driving component and the fan blade assembly to move in the granary, the driving component drives the fan blade assembly to overturn and rotate, the grain surface is stirred to be flat in the overturning and rotating process, and therefore the fan blade assembly rotates to level the grain surface. The purpose of automatic grain leveling is achieved; through automatic grain leveling of the device, the grain leveling efficiency is greatly improved, and meanwhile, the harm of raised dust to respiratory tracts in the manual grain leveling process is also avoided; compared with an existing push plate type grain flattening robot, the grain flattening device stirs the grains through the fan blade assembly, the grain surface is gradually flattened in the stirring process, large resistance does not need to be overcome to push the grains to flatten the grain surface, obvious protrusions do not appear on the two sides of the fan blade assembly, and the grain flattening efficiency is higher.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of granary management, in particular to a double-fan-leaf flat grain device. BACKGROUND

[0002] When grains are put into a granary, the surface of the grain pile is uneven, and the flatness of the grain surface is directly related to the implementation effect of the grain storage technology such as ventilation, fumigation, grain temperature measurement and control during the grain storage period, and further affects the safety of the grain during the storage period, so the flat grain surface is crucial as the last operation link before the grain enters the conventional storage stage after being put into the granary. Meanwhile, the flatness of the grain surface also affects the space utilization rate of the granary. At present, the grain surface is mainly manually leveled, and the manual flat grain effect is not obvious due to the large volume of the granary, the leveling efficiency is low, and dust is generated during the flat grain process, which has certain damage to the respiratory tract of the operator. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the problems of low efficiency and dust hazards in manual leveling of the granary.

[0004] The utility model solves the problems by adopting the technical scheme that

[0005] A double-fan-leaf flat grain device comprises a moving vehicle, a driving component and a fan-leaf assembly. The driving component is arranged on the moving vehicle, and the fan-leaf assembly is connected with the driving component. The bottom surface of the fan-leaf assembly forms an acute angle or zero angle with the bottom plate of the granary. The bottom of the fan-leaf assembly is used for contacting the grain surface. The driving component is used for driving the fan-leaf assembly to overturn and rotate.

[0006] Compared with the prior art, the utility model has the beneficial effects that

[0007] The flat grain device of the utility model is provided with the moving vehicle, the driving component and the fan-leaf assembly. The moving vehicle drives the driving component and the fan-leaf assembly to move in the granary. The driving component drives the fan-leaf assembly to overturn and rotate. The grain surface is leveled by being stirred in the process of overturning and rotating, so that the purpose of automatic flat grain is achieved. The automatic flat grain of the device greatly improves the flat grain efficiency and avoids the harm of dust to the respiratory tract in the process of manual flat grain. Compared with the existing push plate type granary robot, the flat grain device of the utility model stirs the grain by the fan-leaf assembly and gradually levels the grain surface in the stirring process. The fan-leaf assembly does not need to overcome large resistance to push the grain to level the grain surface, and the two sides of the fan-leaf assembly do not have obvious protrusions, so that the flat grain efficiency is higher.

[0008] As a preferred embodiment, the utility model further has the technical scheme that

[0009] The fan blade assembly comprises two fan blades, the top of each of the two fan blades is fixed with a first rotating rod, the two first rotating rods are connected with a driving member respectively, and the two fan blades are reversely flipped or self-rotated by the driving member. The angle between the fan blade and the grain surface is adjusted by the driving member driving the two fan blades to reversely flip, and the grain surface is leveled by the driving member driving the fan blade to self-rotate.

[0010] The driving member comprises a first driving assembly and a second driving assembly, the first driving assembly and the second driving assembly are connected with the two first rotating rods, the first driving assembly drives the two fan blades to self-rotate through the two first rotating rods, and the second driving assembly drives the two fan blades to reversely flip through the two first rotating rods.

[0011] The first driving assembly comprises a first motor and two bevel gear transmission groups, each bevel gear transmission group is composed of two vertically meshing bevel gears, one bevel gear of each bevel gear transmission group is coaxially connected with a first rotating rod, and the other bevel gear of each bevel gear transmission group is coaxially connected with a first sprocket, the two first sprockets are connected through a first chain, and one sprocket is connected with the output shaft of the first motor. The output shaft of the first motor drives the first rotating rod to rotate through the bevel gear transmission group, thereby driving the fan blade to self-rotate.

[0012] The second driving assembly comprises two connecting plates vertically fixed on the two first rotating rods respectively, the other end of each connecting plate is connected with a second rotating rod and a third rotating rod respectively, the second rotating rod is coaxially fixed with the output shaft of the first motor, a pawl is fixed radially on the second rotating rod, a pawl tooth ring is drivingly connected on the pawl, a first swing arm assembly is fixed radially on the pawl tooth ring, a second swing arm assembly is vertically fixed on the third rotating rod, a sliding groove is arranged between the first swing arm assembly and the second swing arm assembly, a sliding block is slidingly arranged in the sliding groove, the top end of the first swing arm assembly and the second swing arm assembly is movably sleeved on the sliding block, when the first motor drives the pawl tooth ring to rotate through the second rotating rod and the pawl, the sliding block is driven to move upward in the sliding groove through the first swing arm assembly, thereby driving the second swing arm assembly to swing synchronously under the driving of the sliding block, the lower end of the second swing arm assembly drives the third rotating rod to rotate synchronously, thereby realizing that the first motor drives the two fan blades to synchronously evert, thereby adjusting the angle of the two fan blades.

[0013] The first driving assembly further comprises two second sprockets, a second chain and a first transmission rod, one second sprocket is fixedly sleeved on the output shaft of the first motor, the two second sprockets are drivingly connected through the second chain, one end of the first transmission rod is coaxially fixed with the other second sprocket, and the other end of the first transmission rod is coaxially fixed with the first sprocket. The first motor drives one second sprocket to rotate, thereby driving the other second sprocket to synchronously rotate through the second chain, and the rotation amount of the first motor is transmitted to the first sprocket through the first transmission rod, so as to drive the two fan blades to self-rotate; through the above structure, one motor can be used to control the self-rotation and eversion of the fan blade.

[0014] The driving member further comprises a third driving assembly, the third driving assembly comprising a second motor, a second transmission rod, a fourth rotating rod and two coaxial sleeves, the second motor being fixed with one end of the second transmission rod, the other end of the second transmission rod being coaxially fixed with one of the sleeves, the abutting position of the two coaxial sleeves being provided with interlocking ratchets, the other sleeve being coaxially sleeved with the fourth rotating rod, the fourth rotating rod being wound with a steel wire rope, the free end of the steel wire rope being sleeved on the sliding block; when the second motor rotates, the steel wire rope is gradually wound by the second transmission rod, the coaxial sleeves and the fourth rotating rod, and the sliding block is driven to move downward in the sliding groove. Through the third driving assembly, the second motor drives the steel wire rope to gradually wind, and drives the sliding block to move downward, in the process of moving downward, the first swing arm assembly and the second swing arm assembly drive the second rotating rod and the third rotating rod to synchronously and reversely rotate, and control the two leaves to rotate; through the alternately starting of the first motor and the second motor, the two leaves can be automatically controlled to evert or rotate under the cooperation of the third driving assembly.

[0015] The driving member further comprises a fourth driving assembly, the fourth driving assembly comprising a first gear, two second gears, two worms, two worm gears, a fifth rotating rod and a fixed shell, the first gear being fixedly sleeved on the output shaft of the second motor, the two second gears being respectively engaged with the first gear, the two worms being coaxially fixed with the two first gears, the two worm gears being respectively engaged with the two worms for transmission, the two worm gears being fixedly sleeved on the fifth rotating rod, the fixed shell being fixedly connected with the fifth rotating rod, the fifth rotating rod being axially perpendicular to the two first rotating rods, the first driving assembly, the second driving assembly, the third driving assembly and the leaf assembly being arranged on the fixed shell. Through the second motor driving the first gear to rotate, the two second gears are synchronously and reversely rotated, the two worms are rotated in the same direction, and then the two worm gears engaged with the worms are rotated, the fifth rotating rod is driven to rotate, the fixed shell is rotated around the fifth rotating rod, and the leaf assembly is driven to swing up and down.

[0016] The fixed shell is provided with a vertical sliding rod and a horizontal sliding rod, the top end of the vertical sliding rod abutting against the bottom of the sliding block, the bottom end of the vertical sliding rod being used for abutting against the horizontal sliding rod and extruding the horizontal sliding rod to move backward, the other end of the horizontal sliding rod being used for abutting against the sleeve connected with the second transmission rod. The above structure is a safety protection structure for automatically stopping the sliding block, when the sliding block moves downward, the two leaves rotate, at this time, the vertical sliding rod moves downward under the extrusion of the sliding block, the horizontal sliding rod moves horizontally under the extrusion of the vertical sliding rod, the other end of the horizontal sliding rod extrudes the sleeve connected with the second transmission rod backward, the ratchets of the two sleeves are disengaged, the other sleeve loses driving force and stops rotating, the steel wire rope stops winding immediately, and the sliding block stops moving downward automatically.

[0017] The sliding block is elastically connected with a ball at both ends, the inner wall of both sides of the sliding groove is provided with a plurality of teeth, and the balls at both ends are respectively abutted between the teeth on both sides. The sliding block is limited in the sliding groove through the ball, when the sliding block is driven to move by the steel wire rope or the first swing arm assembly and the second swing arm assembly, the ball can be telescopic on the teeth, when the sliding block is not driven by the external power, the ball is clamped between the teeth, so that the sliding block can be prevented from falling automatically. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a whole structure perspective view of the embodiment of the present application from another angle;

[0019] Figure 2 is a whole structure perspective view of the embodiment of the present application from another angle;

[0020] Figure 3 is a perspective structure schematic view of the driving member and the fan blade assembly of the embodiment of the present application;

[0021] Figure 4 is a perspective structure schematic view of the driving member and the fan blade assembly of the embodiment of the present application from another angle;

[0022] Figure 5 is a partial enlarged view of A in Figure 3

[0023] Figure 6 is a third driving assembly part exploded view of the embodiment of the present application;

[0024] Figure 7 is a partial enlarged view of B in Figure 3

[0025] Figure 8 is a safety protection structure schematic view of the embodiment of the present application;

[0026] Figure 9 is a structure view of the embodiment of the present application of the pawl, the pawl tooth ring, the first swing arm assembly and the second swing arm assembly.

[0027] ​​In the figure: 1, compression roller; 2, scraping tooth assembly; 3, track assembly; 4, moving support; 5, fixed shell; 51, fixed claw; 6, fan blade; 61, first rotating rod; 62, first cross universal joint; 63, connecting plate; 64, second bevel gear; 65, first bevel gear; 66, first rotating shaft; 67, first chain; 68, first sprocket; 7, second motor; 71, first gear; 72, second gear; 73, worm; 74, worm wheel; 75, second inclined rod; 751, third cross universal joint; 76, fifth rotating rod; 77, second rotating shaft; 8, first motor; 81, second rotating rod; 82, second sprocket; 83, second chain; 84, first inclined rod; 841, second cross universal joint; 85, third rotating rod; 9, ratchet tooth ring; 91, ratchet; 92, first vertical plate; 93, first inclined plate; 94, second inclined plate; 95, second vertical plate; 10, sliding groove; 101, sliding block; 102, fourth rotating rod; 103, steel wire rope chuck; 104, collar; 105, spline shaft; 106, second sleeve; 107, first sleeve; 108, disc; 111, ball; 112, vertical sliding rod; 113, horizontal sliding rod; 1131, second fixed rod; 1132, first fixed rod; 114, fixed ring; 115, spring. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the embodiments, the purpose is only to better understand the utility model content, therefore, the example does not limit the protection scope of the utility model.

[0029] Reference Figures 1-9 The embodiment of the application discloses a double-fan-blade flat grain device, which comprises a moving vehicle, a driving member and a fan blade assembly. The moving vehicle comprises a track assembly 3 and a moving support 4. The driving member is fixed to the front end of the moving support 4. The rear end of the moving support 4 is rotationally connected with a scraping tooth assembly 2. A plurality of scraping teeth fixed to the bottom of the scraping tooth assembly 2 are perpendicular to the bottom surface of a granary. A compression roller 1 is further rotationally connected to the scraping tooth assembly 2. The fan blade assembly is connected with the driving member. The bottom surface of the fan blade assembly forms an acute angle or zero angle with the bottom plate of the granary. The bottom of the fan blade assembly is used to contact the grain surface. The driving member is used to drive the fan blade assembly to overturn and rotate. When the moving vehicle starts to move, the fan blade assembly rotates to agitate and level the grain surface in front of the device. The grain surface pressed by the track assembly 3 is further leveled. The grain surface behind the device is further leveled under the scraping of the scraping tooth assembly 2. Finally, the grain surface is pressed flat by the compression roller 1.

[0030] In the embodiment, the fan blade assembly comprises two fan blades 6 and two first rotating rods 61, the blade inclination directions of the two fan blades 6 are opposite, the bottom ends of the two first rotating rods 61 are coaxially fixed at the top ends of the rotating shafts of the two fan blades 6 respectively, the middle positions of the two first rotating rods 61 are provided with first cross universal joints 62 respectively, the upper parts and the lower parts of the two first rotating rods 61 are rotatably connected through the first cross universal joints 62 respectively, the two first rotating rods 61 are connected with the driving member respectively, the two fan blades 6 are driven to reverse and rotate by the driving member, and the grain surface is leveled.

[0031] In the embodiment, the driving member comprises a first driving assembly, a second driving assembly, a third driving assembly and a fourth driving assembly, the first driving assembly is used for driving the two fan blades 6 to rotate, the second driving assembly is used for driving the two fan blades 6 to evert, the third driving assembly is used for driving the two fan blades 6 to rotate back, the fourth driving assembly comprises a fixed shell 5, the first driving assembly, the second driving assembly, the third driving assembly and the fan blades are arranged on the fixed shell 5, the first rotating rod 61 above the first cross universal joint 62 is rotatably connected with the front outer wall of the fixed shell 5, and the fourth driving assembly is used for driving the fan blade assembly to swing up and down as a whole.

[0032] In the embodiment, the first driving assembly comprises the first motor 8, two bevel gear transmission groups, two first rotating shafts 66, two first chain wheels 68, a first chain 67, a first transmission rod, two second chain wheels 82 and a second chain 83. The bevel gear transmission group is composed of a first bevel gear 65 and a second bevel gear 64 in perpendicular meshing transmission. The diameter of the first bevel gear 65 is larger than that of the second bevel gear 64. The two first bevel gears 65 are coaxially fixedly sleeved at the top ends of the two first rotating shafts 61 respectively. The two second bevel gears 64 are fixedly sleeved at the front ends of the two first rotating shafts 66 respectively. The rear ends of the two first rotating shafts 66 are coaxially fixed with the two first chain wheels 68 respectively. The two first chain wheels 68 are drivingly connected through the first chain 67. The right second chain wheel 82 is connected with the first transmission rod. The first transmission rod comprises two second cross universal joints 841 and a first inclined rod 84. The two ends of the first inclined rod 84 are fixed with driving shafts of the two second cross universal joints 841 respectively. The driven shaft of the second cross universal joint 841 at the upper end of the first inclined rod 84 is coaxially fixed with the right first chain wheel 68. The driven shaft of the second cross universal joint 841 at the lower end of the first inclined rod 84 is coaxially fixed with the right second chain wheel 82. The left second chain wheel 82 is fixedly sleeved on the output shaft of the first motor 8. The two second chain wheels 82 are drivingly connected through the second chain 83. Preferably, the small-diameter end of the left second bevel gear 64 faces the first chain wheel 68. The large-diameter end of the right second bevel gear 64 faces the first chain wheel 68. The two second chain wheels 82 are synchronously rotated by the output shaft of the first motor 8. The two first chain wheels 68 are synchronously rotated by the first transmission rod. The two second bevel gears 64 are reversely rotated by the two first rotating shafts 66 and the bevel gear transmission group, so as to reversely rotate the two fan leaves 6.

[0033] In the embodiment, the second driving assembly comprises two connecting plates 63, a second rotating rod 81 and a third rotating rod 85. The front ends of the two connecting plates 63 are fixedly sleeved on the first rotating rod 61 below the two first cross universal joints 62 respectively. The front end of the second rotating rod 81 is fixed with the rear end of the left connecting plate 63, and the axial direction of the second rotating rod 81 is parallel to the length direction of the connecting plate 63. The rear end of the second rotating rod 81 is coaxially fixed with the output shaft of the first motor 8. The front end of the third rotating rod 85 is fixed with the rear end of the right connecting plate 63. Preferably, the second rotating rod 81 and the third rotating rod 85 are perpendicular to the first rotating rod 61 in the axial direction, so that the second rotating rod 81 and the third rotating rod 85 can drive the first rotating rod 61 to overturn through the connecting plate 63. The front end of the second rotating rod 81 is fixed with two pawls 91 radially. The two pawls 91 are arranged equidistantly in the circumferential direction. A pawl tooth ring 9 is drivingly connected on the pawl 91. A first swing arm assembly is fixed radially on the outer wall of the pawl tooth ring 9. A second swing arm assembly is fixed vertically on the third rotating rod 85. Specifically, the first swing arm assembly comprises a first vertical plate 92 and a first inclined plate 93. The second swing arm assembly comprises a second vertical plate 95 and a second inclined plate 94. The first vertical plate 92 is hingedly connected with the first inclined plate 93. The second vertical plate 95 is hingedly connected with the second inclined plate 94. The lower end of the first vertical plate 92 is fixed radially on the outer wall of the pawl tooth ring 9. The lower end of the second vertical plate 95 is fixedly sleeved on the rear end of the third rotating rod 85. A vertical sliding groove 10 is arranged between the first swing arm assembly and the second swing arm assembly. A sliding block 101 is vertically slidably arranged in the sliding groove 10. A pin shaft is fixed vertically on the sliding block 101. The top ends of the first inclined plate 93 and the second inclined plate 94 are movably sleeved on the pin shaft.

[0034] In the embodiment, the third driving assembly comprises the second motor 7, a second transmission rod, a fourth rotating rod 102, a first sleeve 107 and a second sleeve 106. The second motor 7 is fixed on the moving support 4. The second transmission rod comprises two third cross universal joints 751, a second inclined rod 75 and a second rotating shaft 77. The two ends of the second inclined rod 75 are fixed with driving shafts of the two third cross universal joints 751 respectively. The driven shaft of the third cross universal joint 751 at the upper end of the second inclined rod 75 is coaxially fixed with the second rotating shaft 77. The driven shaft of the third cross universal joint 751 at the lower end of the second inclined rod 75 is coaxially fixed with the output shaft of the second motor 7. The first sleeve 107 and the second sleeve 106 are coaxially arranged sleeves, and the diameters of the first sleeve 107 and the second sleeve 106 are the same. The front end of the first sleeve 107 and the rear end of the second sleeve 106 are provided with intermeshing ratchets respectively. Through the structure of the ratchets, when the first sleeve 107 rotates counterclockwise, the second sleeve 106 will not be driven to rotate synchronously. Only when the first sleeve 107 rotates clockwise, the second sleeve 106 is driven to rotate synchronously clockwise. The rear end of the first sleeve 107 is fixed with a disc 108 with a diameter larger than that of the first sleeve 107. The second rotating shaft 77 is inserted into the first sleeve 107 and the disc 108. Specifically, the front end of the second rotating shaft 77 is radially fixed with a clamping block. A through hole with the same diameter as the second rotating shaft 77 is formed in the middle of the disc 108. A clamping groove matched with the clamping block is formed in the through hole, so that the disc 108 is driven to rotate by the clamping block when the second rotating shaft 77 rotates, and in turn drives the first sleeve 107 to rotate. At the same time, the disc 108 can move on the second rotating shaft 77. The front end of the second sleeve 106 is fixedly connected with the rear end of the fourth rotating rod 102. The rear end of the fourth rotating rod 102 is sleeved with a spline shaft 105. The rear end of the steel wire rope chuck 103 is splined with the spline shaft 105. The steel wire rope is fixedly wound on the steel wire rope chuck 103. The free end of the steel wire rope is fixed with a sleeve ring 104, which is sleeved on the pin shaft of the sliding block 101. When the output shaft of the first motor 8 rotates clockwise, the first swing arm assembly is driven to swing through the second rotating rod 81, the pawl 91 and the ratchet tooth ring 9. In the swinging process, the sliding block 101 is driven to move upwards in the sliding groove, the second swing arm assembly is driven to swing synchronously, the third rotating rod 85 is driven to rotate counterclockwise, and in turn the second rotating rod 81 and the third rotating rod 85 are driven to rotate reversely, the first rotating rod 61 below the two first cross universal joints 62 is driven to evert synchronously, and in turn the two fan blades 6 are driven to evert synchronously.When the output shaft of the second motor 7 rotates clockwise, the steel wire is gradually wound on the steel wire chuck 103 through the second transmission rod, the second rotating shaft 77, the disc 108, the first sleeve 107, the second sleeve 106, the fourth rotating rod 102 and the steel wire chuck 103, the pin shaft is pulled to drive the sliding block 101 to move downward in the sliding groove 10 through the thimble 104, in the process of moving downward, the first swing arm assembly and the second swing arm assembly drive the second rotating rod 81 to rotate counterclockwise and the third rotating rod 85 to rotate clockwise, thereby driving the first rotating rod 61 below the first cross universal joint 62 to rotate, and controlling the two leaves 6 to rotate; through the alternation of starting the first motor 8 and the second motor 7, the two leaves 6 can be automatically controlled to evert or rotate under the cooperation of the third driving assembly.

[0035] In the embodiment, the fourth driving assembly comprises a first gear 71, two second gears 72, two worms 73, two worm gears 74 and a fifth rotating rod 76, the rear end of the fixed shell 5 extends rearwardly with three fixed claws 51, the rear ends of the three fixed claws 51 are fixedly sleeved on the fifth rotating rod 76 at equal intervals, and the two worm gears 74 are fixedly sleeved on the fifth rotating rod 76 between two adjacent fixed claws 51; the first gear 71 is fixedly sleeved on the output shaft of the second motor 7, the two second gears 72 are arranged on the two sides of the first gear 71 and are in engagement with the first gear 71, the rear ends of the two worms 73 are coaxially fixed with the two first gears 71, two bearing seats are fixed on the moving support 4, the front ends of the two worms 73 are rotatably arranged in the two bearing seats, and the two worms 73 are in engagement transmission with the two worm gears 74; when the first gear 71 is driven to rotate by the second motor 7, the two second gears 72 are synchronously rotated to drive the two worms 73 to rotate, at this time, the worm gear 74 in engagement with the threaded section is rotated under the transmission of the worm 73, thereby driving the fifth rotating rod 76 to rotate, and further driving the fixed shell 5 to rotate about the fifth rotating rod 76 as the axis, the fifth rotating rod 76 is axially perpendicular to the two first rotating rods 61, so that the driving member and the leaf assembly arranged on the fixed shell can swing up and down about the fifth rotating rod 76 as the core, thereby adjusting the height of the leaf assembly; through the rotation of the first gear 71 driven by the second motor 7, the two second gears 72 are synchronously and reversely rotated, so that the two worms 73 are synchronously rotated, and further through the rotation of the two worm gears 74 in engagement with the two worms 73, the fifth rotating rod 76 is rotated, so that the fixed shell 5 rotates about the fifth rotating rod 76, and further drives the leaf 6 to swing up and down.

[0036] In the embodiment, the lower end of the sliding groove 10 is fixed on the inner wall of the fixed shell 5, the second rotating rod 81 and the third rotating rod 85 are rotatably arranged on the fixed shell 5, and the front ends of the second rotating shaft 77 and the fourth rotating rod 102 are rotatably connected to the fixed shell 5 through bearings.

[0037] In the embodiment, the fixed shell 5 is provided with two vertical sliding rods 112 and two horizontal sliding rods 113, the two vertical sliding rods 112 are respectively fixed at the bottom of the sliding block 101, and the two horizontal sliding rods 113 are respectively arranged on the left and right sides of the steel wire rope chuck 103. Two first fixed rods 1132 are arranged on the inner wall of the fixed shell 5 at the rear end of the sliding groove 10, the front ends of the two horizontal sliding rods 113 are respectively rotatably inserted into the two first fixed rods 1132, and the bottom ends of the two vertical sliding rods 112 and the front ends of the two horizontal sliding rods 113 are fixed with triangular clamping blocks. The triangular clamping blocks of the two vertical sliding rods 112 and the horizontal sliding rods 113 are respectively abutted with each other, and the rear ends of the horizontal sliding rods 113 are used for abutting against the disc 108. The above structure is a safety protection structure for automatically stopping the downward movement of the sliding block 101. When the steel wire rope pulls the sliding block 101 to move downward, the two fan blades 6 are rotated under the drive of the first swing arm assembly and the second swing arm assembly. At this time, the vertical sliding rods 112 are pulled downward under the drive of the sliding block 101, and the horizontal sliding rods 113 are pushed to move backward through the extrusion and staggering of the triangular clamping blocks, and gradually abut against the disc 108. The disc 108 is extruded to move backward on the second rotating shaft 77, drives the first sleeve 107 to move backward, so that the ratchet teeth of the first sleeve 107 and the second sleeve 106 are separated. At this time, even if the output shaft of the second motor 7 continues to rotate clockwise, the second sleeve 106 will stop rotating because it loses the transmission power of meshing transmission. The steel wire rope stops winding immediately, so that the downward movement of the sliding block 101 is automatically stopped, thereby avoiding the continuous downward movement of the sliding block 101 and causing structural damage. Preferably, the inner wall of the fixed shell 5 is further provided with two second fixed rods 1131, the rear ends of the two horizontal sliding rods 113 are respectively rotatably inserted into the two second fixed rods 1131, and the front sides of the two second fixed rods 1131 are fixed with springs 115, and the other ends of the springs 115 are fixed with fixed rings 114. The fixed rings 114 are fixedly sleeved on the horizontal sliding rods 113. By arranging the springs 115, when the vertical sliding rods 112 are pulled upward under the drive of the sliding block 101, the horizontal sliding rods 113 are reset under the drive of the springs 115. At this time, the ratchet teeth of the first sleeve 107 and the second sleeve 106 are restored to meshing, so that the power transmission is restored.

[0038] In the embodiment, the two ends of the sliding block 101 are elastically connected with ball seats, the elastic displacement direction of the ball seat is perpendicular to the moving direction of the sliding block, and the ball seat is rotatably provided with a ball 111. The inner walls on the two sides of the sliding groove 10 are provided with a plurality of teeth, and the two ends of the ball 111 are respectively abutted between the teeth on the two sides. The sliding block 101 is limited in the sliding groove 10 through the ball 111. When the sliding block 101 is pulled downward by the steel wire rope or the first swing arm assembly and the second swing arm assembly, the ball 111 can be extended and retracted to walk between the teeth. When the sliding block 101 is not driven by external power, the ball 111 is clamped between the two teeth, drives the sliding block 101 to be clamped, and thus the automatic falling of the sliding block 101 is avoided.

[0039] In use, firstly, the output shaft of the first motor 8 is controlled to rotate clockwise, the two fan leaves 6 are driven to turn outward by the second rotating rod 81 and the connecting plate 63, until the sliding block 101 is driven to slide to the top of the sliding groove 10, the first motor 8 is controlled to stop rotating, and the two fan leaves 6 stop turning outward; while the fan leaves turn outward, the two fan leaves 6 are driven to rotate reversely between each other by the second sprocket 82, the second chain 83, the first sprocket 68, the first chain 67, the first bevel gear 65 and the second bevel gear 64, so that the two fan leaves 6 rotate reversely between each other while turning outward; then the output shaft of the second motor 7 is controlled to rotate clockwise, the steel wire rope chuck 103 is driven to rotate clockwise by the second inclined rod 75, the second rotating shaft 77, the disc 108, the first sleeve 107, the second sleeve 106 and the fourth rotating rod 102, the steel wire rope is gradually wound on the steel wire rope chuck 103, the sliding block 101 is driven to move downward in the sliding groove 10 by the steel wire rope and the sleeve ring 104, at this time, the first inclined plate 93 drives the ratchet tooth ring 9 to rotate counterclockwise, the second inclined plate 94 drives the second vertical plate 95 to rotate counterclockwise, so as to drive the two fan leaves 6 to turn inward, while the fan leaves turn inward, the ratchet tooth ring 9 drives the ratchet 91 to rotate counterclockwise, the second sprocket 82 is driven to rotate by the second rotating rod 81, the two fan leaves 6 are driven to rotate reversely between each other by the second chain 83, the first sprocket 68, the first chain 67, the first bevel gear 65 and the second bevel gear 64, so that the two fan leaves 6 rotate reversely between each other while turning inward; the first motor 8 and the second motor 7 are controlled to start according to the above steps, the two fan leaves 6 are driven to turn outward and turn inward alternately, and the two fan leaves 6 rotate reversely between each other while turning, so that the grain surface is stirred and leveled.

[0040] The grain leveling device is characterized in that the moving vehicle, the driving member and the fan leaves are arranged, the driving member and the fan leaves are driven to move in the granary by the moving vehicle, the fan leaves are driven to turn and rotate by the driving member, the grain surface is stirred and leveled in the turning and rotating process, the purpose of automatic grain leveling is achieved, the grain is leveled automatically, the grain leveling efficiency is greatly improved, and the harm of dust in the artificial grain leveling process to the respiratory tract is avoided.

[0041] The above merely describes the preferred and workable embodiments of the utility model, and is not intended to limit the utility model's scope, and any equivalent changes made according to the utility model's description and drawings are included in the utility model's scope.

Claims

1. A double flap grain spreader characterized by: The utility model provides a movable vehicle, driving component and fan blade assembly, driving component is arranged on movable vehicle, and fan blade assembly is connected with driving component, and the bottom surface of fan blade assembly is acute angle or zero angle with granary bottom plate, and the bottom of fan blade assembly is used for contacting with grain surface, and driving component is used for driving fan blade assembly to overturn and autorotation, the rear end of movable support is rotatably connected with scraper tooth assembly, and the bottom of a plurality of scraper teeth fixedly connected with scraper tooth assembly is perpendicular to granary bottom surface, and pressure roller is rotatably connected on scraper tooth assembly.

2. The double-leaf flat floor device according to claim 1, characterized in that: The fan blade assembly includes two fan blades, each of which is fixed with a first rotating rod at the top, and the two first rotating rods are connected with the driving component, so that the two fan blades are driven to reverse or autorotate by the driving component.

3. The double-leaf flat floor device according to claim 2, characterized in that: The driving component includes a first driving assembly and a second driving assembly, both of which are connected with the two first rotating rods, the first driving assembly drives the two fan blades to autorotate through the two first rotating rods, and the second driving assembly drives the two fan blades to overturn through the two first rotating rods.

4. The double-leaf flat floor device according to claim 3, characterized in that: The first driving assembly includes a first motor and two bevel gear transmissions, each of which is composed of two perpendicular bevel gears, one of the bevel gears of each bevel gear transmission is coaxially connected with a first rotating rod, and the other bevel gear of each bevel gear transmission is coaxially connected with a first sprocket, and the two first sprockets are connected by a first chain, one of which is connected with the output shaft of the first motor.

5. The double-leaf flat floor device of claim 4, wherein: The second driving assembly includes two connecting plates fixed vertically on the two first rotating rods, respectively, one end of each of the two connecting plates is connected with a second rotating rod and a third rotating rod, respectively, the second rotating rod is coaxially fixed with the output shaft of the first motor, a pawl is fixed radially on the second rotating rod, a pawl tooth ring is drivingly connected with the pawl, a first swing arm assembly is fixed radially on the pawl tooth ring, a second swing arm assembly is fixed vertically on the third rotating rod, a sliding groove is arranged between the first swing arm assembly and the second swing arm assembly, a sliding block is slidingly arranged in the sliding groove, and the top end of the first swing arm assembly and the second swing arm assembly is movably sleeved on the sliding block, when the first motor drives the pawl tooth ring to rotate through the second rotating rod and the pawl, the sliding block is driven to move upward in the sliding groove through the first swing arm assembly, the second swing arm assembly swings synchronously under the driving of the sliding block, and the third rotating rod is driven to rotate synchronously.

6. The double-leaf flat floor device of claim 3, wherein: The first driving assembly further includes two second sprockets, a second chain, and a first transmission rod, one of the second sprockets is fixedly sleeved on the output shaft of the first motor, the two second sprockets are connected by the second chain, one end of the first transmission rod is coaxially fixed with the other second sprocket, and the other end of the first transmission rod is coaxially fixed with the first sprocket.

7. The double-leaf flat floor device of claim 5, wherein: The driving member further comprises a third driving assembly, the third driving assembly comprising a second motor, a second transmission rod, a fourth rotating rod and two coaxial sleeves, the second motor being fixed to one end of the second transmission rod, the other end of the second transmission rod being coaxially fixed to one of the sleeves, the abutting position of the two coaxial sleeves being provided with inter-matched ratchets, the other sleeve being coaxially sleeved with the fourth rotating rod, the fourth rotating rod being wound with a steel wire rope, the free end of the steel wire rope being sleeved on the sliding block; when the second motor rotates, the steel wire rope is gradually wound up by the second transmission rod, the coaxial sleeves and the fourth rotating rod, thereby driving the sliding block to move downward in the sliding groove.

8. The double-leaf flat floor device of claim 7, wherein: The driving member further comprises a fourth driving assembly, the fourth driving assembly comprising a first gear, two second gears, two worms, two worm gears, a fifth rotating rod and a fixed shell, the first gear being fixedly sleeved on the output shaft of the second motor, the two second gears being respectively engaged with the first gear, the two worms being respectively coaxially fixed with the two first gears, the two worm gears being respectively engaged with the two worms for transmission, the two worm gears being fixedly sleeved on the fifth rotating rod, the fixed shell being fixedly connected with the fifth rotating rod, the fifth rotating rod being axially perpendicular to the two first rotating rods, the first driving assembly, the second driving assembly, the third driving assembly and the fan blade assembly being arranged on the fixed shell.

9. The double-leaf flat floor device of claim 8, wherein: The fixed shell is provided with a vertical sliding rod and a horizontal sliding rod, the top end of the vertical sliding rod abutting against the bottom of the sliding block, the bottom end of the vertical sliding rod being used for abutting against the horizontal sliding rod and extruding the horizontal sliding rod to move backward, the other end of the horizontal sliding rod being used for abutting against the sleeve connected with the second transmission rod.

10. The double-leaf flat floor device of claim 5, wherein: The sliding block is elastically connected with a ball at both ends, the inner walls of both sides of the sliding groove being provided with a plurality of teeth, the balls at both ends being respectively abutted between the teeth on both sides.

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