Grain silo

Abstract

The utility model discloses a grain silo which comprises a silo cylinder, a silo top, a central stand column, a power platform and a distributing device, the central stand column comprises a movable connecting section and a distributing section, and the movable connecting section comprises a top column section used for being connected with the silo top and an air channel column section arranged on the power platform. The top column section comprises a positioning cylindrical pipe, a top flange distributed on the positioning cylindrical pipe and used for being connected with a silo top and inclined supporting rods evenly distributed on the positioning cylindrical pipe in the circumferential direction and used for being connected with the silo top, windows used for overflowing and discharging are formed in the positioning cylindrical pipe, and the windows are distributed between every two adjacent inclined supporting rods; the inner cylinder wall of the air duct column section is arranged on the positioning cylindrical pipe in a sleeving mode and can relatively move in the axial direction, a joining flange used for being connected with a power platform is arranged on the annular bottom face of the air duct column section, and the top face of the material distributing section is connected with the bottom face of the power platform; the device is simple in structure, convenient to install and capable of effectively preventing the central stand column from damaging the silo top when the temperature changes and eliminating potential safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, and in particular to a grain silo. Background Art

[0002] The grain silo is the main silo type for modern bulk grain storage. The grain inlet of the grain silo is located at the top of the silo. The grain enters the central column from the grain inlet and is then scattered in the grain silo through a distributor.

[0003] In the existing grain silo, the central column is rigidly connected to the silo top. When the temperature is relatively high in summer, the central column expands due to heat, and the central column presses upward against the silo top, which may cause damage to the silo top. When the temperature is relatively low in winter, the central column contracts due to cold, and the central column pulls downward on the silo top, which may also cause damage to the silo top. Summary of the Utility Model

[0004] The utility model provides a grain silo to solve the technical problem that in the existing grain silo, the central column is rigidly connected to the silo top, and the central column expands and contracts due to heat and cold, which may cause damage to the silo top and pose a major safety hazard.

[0005] According to one aspect of the utility model, there is provided a grain silo, including a silo barrel, a silo top, a central column, a power platform and a distributor. The central column includes a movable connection section and a material distribution section. The movable connection section includes a top column section for connecting the silo top and an air duct column section disposed on the power platform. The top column section includes a positioning cylindrical tube, a top flange disposed on the positioning cylindrical tube for connecting the silo top, and inclined support rods disposed circumferentially and uniformly on the positioning cylindrical tube for connecting the silo top. An opening window for overflowing and discharging materials is formed on the positioning cylindrical tube, and the opening window is disposed between two adjacent inclined support rods. The inner barrel wall of the air duct column section is sleeved on the positioning cylindrical tube and can move axially relative to each other. An engagement flange for connecting the power platform is disposed on the annular bottom surface of the air duct column section. The top surface of the material distribution section is connected to the bottom surface of the power platform.

[0006] Further, the material distribution section of the central column includes a top column section disposed on the silo top, an air duct column section connected to the top column section, a bottom column section disposed on the silo bottom ground, a free discharge column section connected to the bottom column section, a control discharge column section and a connecting column section disposed between the free discharge column section and the air duct column section. The air duct column section is connected to the control discharge column section, the control discharge column section is connected to the free discharge column section, and adjacent two control discharge column sections are connected by the connecting column section. The control discharge column section is circumferentially and uniformly provided with control discharge ports and discharge doors for shielding the control discharge ports. On both sides of each control discharge port, a discharge speed increasing device is provided. The discharge speed increasing device includes a bracket for connecting the control discharge column section, an air knife disposed on the bracket for blowing air towards the control discharge port, an air pipe joint disposed on the air knife, and an air pipe for connecting the air pipe joint to an external circulation fan.

[0007] Further, ventilation air ducts that communicate with each other are provided on the outer side walls of the bottom column section, the free discharge column section, the control discharge column section and the connecting column section. The ventilation air ducts communicate with the air duct column section. The discharge speed increasing device is disposed in the ventilation air ducts. An air duct external flange for connecting an external circulation fan is provided on the outer cylindrical wall of the air duct column section. An air duct interface for connecting the ventilation air ducts is opened on the annular bottom surface of the air duct column section.

[0008] Further, a linear drive mechanism for driving the discharge door to move axially is provided on the control discharge column section. The discharge door is slidably connected to the control discharge port.

[0009] Further, free discharge ports are circumferentially and uniformly provided on the free discharge column section. An umbrella-shaped material distributor is provided in the free discharge column section. The umbrella-shaped material distributor is provided with material discharge ports corresponding one by one to the free discharge ports. The width of the material discharge ports is the same as the width of the free discharge ports.

[0010] Further, the power platform includes a platform body, a transmission fixing seat disposed on the platform body, a power device disposed on the transmission fixing seat for driving the cloth feeder to lift, and an elastic sling for connecting the platform body to the top of the silo. The power device includes a driver, a first spiral bevel gear reducer, a second spiral bevel gear reducer, a third spiral bevel gear reducer, a first chain hoist, a second chain hoist, a third chain hoist, and a fourth chain hoist. The first chain hoist, the second chain hoist, the third chain hoist, and the fourth chain hoist are respectively connected to the cloth feeder. The driver is connected to the input end of the first spiral bevel gear reducer through a coupling. Two output ends of the first spiral bevel gear reducer are respectively connected to the input end of the second spiral bevel gear reducer and the input end of the third spiral bevel gear reducer through a first transmission rod and a second transmission rod. Two output ends of the second spiral bevel gear reducer are respectively connected to the first chain hoist and the second chain hoist through a third transmission rod and a fourth transmission rod. Two output ends of the third spiral bevel gear reducer are respectively connected to the third chain hoist and the fourth chain hoist through a fifth transmission rod and a sixth transmission rod.

[0011] Further, the elastic sling includes a suspension seat for connecting to the top of the silo, an elastic buffer structure for connecting to the platform body, and a chain for connecting the suspension seat and the elastic buffer structure. The elastic buffer structure includes a turnbuckle bolt, a nut screwed to the bottom end of the turnbuckle bolt, and a spring sleeved on the turnbuckle bolt. The top end of the turnbuckle bolt passes through the platform body and is connected to the chain. The spring is disposed between the platform body and the nut.

[0012] Further, the turnbuckle bolt is connected to the chain through a screw buckle. The screw buckle includes a ring rod, an upper screw rod screwed to the ring rod, an O-shaped joint disposed on the upper screw rod, a lower screw rod screwed to the ring rod, and a U-shaped joint disposed on the lower screw rod. The O-shaped joint is connected to the chain. The U-shaped joint is hinged to the top end of the turnbuckle bolt through a pin shaft.

[0013] Further, the suspension seat includes a first connecting plate for connecting to the top of the silo, a second connecting plate for connecting to the chain, and a connecting rod for connecting the first connecting plate and the second connecting plate. First reinforcing ribs are disposed between the connecting rod and the first connecting plate and / or between the connecting rod and the second connecting plate. First D-shaped lifting rings and second D-shaped lifting rings are respectively disposed at both ends of the chain. A lifting lug adapted to the first D-shaped lifting ring is disposed on the second connecting plate. The second D-shaped lifting ring is connected to the O-shaped joint.

[0014] Further, the drive fixing base includes a first mounting base for mounting the driver and the first spiral bevel gear speed reducer, a second mounting base for mounting the second spiral bevel gear speed reducer and the first ring chain hoist, a third mounting base for mounting the second ring chain hoist, a fourth mounting base for mounting the third spiral bevel gear speed reducer and the third ring chain hoist, and a fifth mounting base for mounting the fourth ring chain hoist.

[0015] The utility model has the following beneficial effects:

[0016] For the grain silo of the utility model, the central column includes a movable connection section and a material distribution section. The top column section of the movable connection section is installed on the silo top, the air duct column section is installed on the top surface of the power platform, the material distribution section is installed on the bottom surface of the power platform, the cylindrical pipe of the top column section is inserted into the inner cylinder wall of the air duct column section, and the cylindrical pipe and the inner cylinder wall can slide relative to each other along the axial direction. This can not only ensure that the grain falling from the grain inlet at the silo top can smoothly enter the material distribution section, but also avoid directly squeezing / pulling the silo top when the central column expands and contracts due to heat. Its structure is simple, the installation is convenient, it can effectively avoid the central column damaging the silo top when the temperature changes, and can eliminate potential safety hazards.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the grain silo of the preferred embodiment of the utility model;

[0020] Figure 2 is a schematic structural diagram of the central column of the preferred embodiment of the utility model;

[0021] Figure 3 is a cross-sectional view of the central column of the preferred embodiment of the utility model;

[0022] Figure 4 is a schematic structural diagram of the top column section of the preferred embodiment of the utility model;

[0023] Figure 5 is a schematic structural diagram of the air duct column section of the preferred embodiment of the utility model;

[0024] Figure 6 is a schematic structural diagram of the free discharge column section of the preferred embodiment of the utility model;

[0025] Figure 7 is the top view of the free-discharging column section of the preferred embodiment of the present utility model;

[0026] Figure 8 is the structural schematic diagram of the umbrella-shaped distributor of the preferred embodiment of the present utility model;

[0027] Figure 9 is the structural schematic diagram of the control discharging column section of the preferred embodiment of the present utility model;

[0028] Figure 10 is the top view of the control discharging column section of the preferred embodiment of the present utility model;

[0029] Figure 11 is Figure 10 the enlarged schematic diagram of the A area shown in;

[0030] Figure 12 is the structural schematic diagram of the discharging speed-up device of the preferred embodiment of the present utility model;

[0031] Figure 13 is the structural schematic diagram of the platform body of the preferred embodiment of the present utility model;

[0032] Figure 14 is the top view of the platform body of the preferred embodiment of the present utility model;

[0033] Figure 15 is the structural schematic diagram of the power device of the preferred embodiment of the present utility model;

[0034] Figure 16 is the structural schematic diagram of the elastic sling of the preferred embodiment of the present utility model;

[0035] Figure 17 is the structural schematic diagram of the turnbuckle of the preferred embodiment of the present utility model.

[0036] Legend:

[0037] 1. Silo; 2. Silo top; 21. Grain inlet; 3. Central column; 31. Top column section; 311. Positioning cylindrical pipe; 312. Top flange; 313. Inclined support rod; 314. Window opening; 32. Air duct column section; 321. Inner cylinder wall; 322. Outer cylinder wall; 3221. Air duct external flange; 323. Annular bottom surface; 3231. Air duct interface; 3232. Connecting flange; 33. Bottom column section; 34. Free discharging column section; 341. Free discharging port; 342. Umbrella-shaped distributor; 3421. Feeding port; 35. Control discharging column section; 351. Discharging door; 352. Discharging speed-up device; 3521. Bracket; 3522. Air knife; 3523. Air pipe joint; 353. Control discharging port; 354. Linear driving mechanism; 36. Connecting column section; 37. Ventilation air duct; 4. Power platform; 41. Platform body; 411. Column connecting flange; 412. Safety railing; 42. Power device; 421. Driver; 422. First spiral bevel gear reducer; 423. Second spiral bevel gear reducer; 424. Third spiral bevel gear reducer; 425. First chain hoist; 426. Second chain hoist; 427. Third chain hoist; 428. Fourth chain hoist; 4291. First transmission rod; 4292. Second transmission rod; 4293. Third transmission rod; 4294. Fourth transmission rod; 4295. Fifth transmission rod; 4296. Sixth transmission rod; 43. Transmission fixing seat; 431. First mounting seat; 432. Second mounting seat; 433. Third mounting seat; 434. Fourth mounting seat; 435. Fifth mounting seat; 44. Elastic sling; 441. Suspension seat; 4411. First connecting plate; 4412. Second connecting plate; 4413. Connecting rod; 4414. First reinforcing rib; 4415. Suspension ear; 4416. Second reinforcing rib; 442. Elastic buffer structure; 4421. Eye bolt; 4422. Nut; 4423. Spring; 443. Chain; 4431. First D-shaped lifting ring; 4432. Second D-shaped lifting ring; 444. Turnbuckle; 4441. Ring rod; 4442. Upper screw rod; 4443. O-shaped joint; 4444. Lower screw rod; 4445. U-shaped joint; 4446. Pin shaft; 5. Distributor. Detailed implementation manners

[0038] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. However, the present utility model can be implemented in many different ways defined and covered by the following.

[0039] Please refer to together Figures 1 to 17, the grain silo of this embodiment includes a silo cylinder 1, a silo top 2, a central column 3, a power platform 4 and a distributor 5. The central column 3 includes a movable connection section and a material distribution section. The movable connection section includes a top column section 31 for connecting the silo top and an air duct column section 32 disposed on the power platform 4. The top column section 31 includes a positioning cylindrical tube 311, a top flange 312 disposed on the positioning cylindrical tube 311 for connecting the silo top 2, and inclined support rods 313 uniformly arranged along the circumferential direction on the positioning cylindrical tube 311 for connecting the silo top 2. An opening 314 for overflow discharge is formed on the positioning cylindrical tube 311, and the opening 314 is disposed between two adjacent inclined support rods 313. The inner cylinder wall 321 of the air duct column section 32 is sleeved on the positioning cylindrical tube 311 and can move relatively along the axial direction. The annular bottom surface 323 of the air duct column section 32 is provided with an engagement flange 3232 for connecting the power platform 4. The top surface of the material distribution section is connected to the bottom surface of the power platform 4.

[0040] In the grain silo of this embodiment, the central column 3 includes a movable connection section and a material distribution section. The top column section 31 of the movable connection section is installed on the silo top 2, the air duct column section 32 is installed on the top surface of the power platform 4, and the material distribution section is installed on the bottom surface of the power platform 4. The positioning cylindrical tube 311 of the top column section 31 is inserted into the inner cylinder wall 321 of the air duct column section 32, and the positioning cylindrical tube 311 and the inner cylinder wall 321 can slide relatively along the axial direction, which can not only ensure that the grain falling from the grain inlet 21 at the silo top 2 can smoothly enter the material distribution section, but also avoid directly squeezing / pulling the silo top 2 when the central column 3 expands and contracts due to temperature changes. Its structure is simple and the installation is convenient. It can effectively avoid the central column 3 damaging the silo top 2 during temperature changes and eliminate potential safety hazards.

[0041] The central column 3 of this embodiment, the material distribution section includes a bottom column section 33 arranged on the bottom ground of the silo, a free discharge column section 34 connected to the bottom column section 33, a control discharge column section 35 arranged between the free discharge column section 34 and the air duct column section 32, and a connecting column section 36. Between the air duct column section 32 and the control discharge column section 35, between the control discharge column section 35 and the free discharge column section 34, and between two adjacent control discharge column sections 35 are connected by the connecting column section 36. Along the circumference of the control discharge column section 35, control discharge openings 353 and discharge doors 351 for blocking the control discharge openings 353 are evenly arranged. On both sides of each control discharge opening 353, a discharge speed-up device 352 is arranged. For the central column 3 of this embodiment, the top column section 31 is installed on the top 2 of the grain silo, the bottom column section 33 is installed on the ground of the grain silo. Between the top column section 31 and the bottom column section 33, an air duct column section 32, a control discharge column section 35, and a free discharge column section 34 are arranged. During use, the grain enters the inside of the central column 3 from the grain inlet 21 on the top 2 of the silo, first discharges from the free discharge column section 34, and each section of the control discharge column section 35 discharges in segments from bottom to top. By controlling the size of the control discharge opening 353 blocked by the discharge door 351, it is ensured that the central column 3 always maintains the set height range of the material, preventing the material from colliding and breaking at high altitude; the discharge speed-up devices 352 on both sides of the control discharge opening 353 can accelerate the flow rate of the grain at the control discharge opening 353, improve the discharging speed of the lower central column 3, thereby shortening the loading time of the silo, reducing the energy consumption of the feeding device, and improving the loading efficiency.

[0042] As Figure 10 , Figure 11 and Figure 12 shown, in this embodiment, the discharge speed-up device 352 includes a bracket 3521 for connecting the control discharge column section 35, an air knife 3522 arranged on the bracket 3521 for blowing air towards the control discharge opening 353, an air pipe joint 3523 arranged on the air knife 3522, and an air pipe for connecting the air pipe joint 3523 with an external circulation fan; the air knife 3522 can ensure that the air flow blows in a specified direction. By blowing air at a preset angle through two air knives 3522, the flow rate of the grain at the control discharge opening 353 is accelerated, which can not only improve the discharging speed of the central column 3 but also avoid damaging the grain.

[0043] As Figure 11 shown, in this embodiment, the included angle θ between the air blowing direction of the air knife 3522 and the discharge door 351 is 40 - 50°.

[0044] As Figure 2 , Figure 3 and Figure 10As shown in the figure, in this embodiment, ventilation air ducts 37 that communicate with each other are arranged on the outer side walls of the bottom column section 33, the free discharging column section 34, the controlled discharging column section 35, and the connecting column section 36. The ventilation air ducts 37 communicate with the air duct column section 32. The discharging speed increasing device 352 is arranged in the ventilation air ducts 37. The ventilation air ducts 37 can not only realize the circulating flow of air in the grain silo to avoid grain heating and mildew, but also protect the discharging speed increasing device 352 from being squeezed by the grain. In addition, it can also be used as a limiting structure to prevent the distributor 5 from rotating self, and can improve the overall rigidity of the central column 3.

[0045] As Figure 2 , Figure 3 and Figure 9 shown in the figure, in this embodiment, a linear drive mechanism 354 for driving the discharging door 351 to move axially is arranged on the controlled discharging column section 35. The discharging door 351 is slidably connected to the controlled discharging port 353. The linear drive mechanism 354 has a simple structure and can accurately control the size of the discharging door 351 covering the controlled discharging port 353. Optionally, the linear drive mechanism 354 is a cylinder, which can reduce the pollution caused by oil stains and keep the grain clean compared with a hydraulic cylinder and a gear and rack mechanism driven by a motor.

[0046] As Figure 4 shown in the figure, in this embodiment, the top column section 31 includes a positioning cylindrical pipe 311, a top flange 312 arranged on the positioning cylindrical pipe 311 for connecting to the silo top 2, and inclined support rods 313 that are evenly arranged circumferentially on the positioning cylindrical pipe 311 for connecting to the silo top 2. An opening window 314 for overflow discharging is formed on the positioning cylindrical pipe 311, and the opening window 314 is arranged between two adjacent inclined support rods 313. The top column section 31 is rigidly connected to the silo top 2 through eight inclined support rods 313 and the top flange 312. When the discharging speed of the central column 3 is less than the feeding speed, the material naturally overflows and discharges through the opening window 314 to prevent the material from blocking the equipment in the previous process.

[0047] As Figure 5As shown in the figure, in this embodiment, the inner cylinder wall 321 of the air duct column section 32 is sleeved on the positioning cylindrical pipe 311 and can move axially relative to it. An air duct external flange 3221 for connecting an external circulation fan is arranged on the outer cylinder wall 322 of the air duct column section 32. An air duct interface 3231 for connecting the ventilation air duct 37 is provided on the annular bottom surface 323 of the air duct column section 32. An adapter flange 3232 for connecting the column connection flange 411 on the power platform 4 is arranged on the annular bottom surface 323; the air duct column section 32 is an integrated structure of the air duct and the material passage. Four air duct interfaces 3231 are provided on the annular bottom surface 323. The inner cylinder wall 321 of the air duct column section 32 is sleeved on the positioning cylindrical pipe 311 to prevent the central column 3 from swinging radially; the inner cylinder wall 321 of the air duct column section 32 and the positioning cylindrical pipe 311 can move axially relative to each other, which can prevent the damage of the silo top 2 caused by the thermal expansion and contraction of the central column 3. The air duct external flange 3221 is connected to the air duct network of the external circulation fan, which can realize the air circulation flow in the grain silo and avoid the heating and mildew of the grain.

[0048] As Figure 6 , Figure 7 and Figure 8 shown in the figure, in this embodiment, free discharge openings 341 are evenly arranged circumferentially on the free discharge column section 34. An umbrella-shaped distributor 342 is arranged inside the free discharge column section 34. Feeding openings 3421 corresponding to the free discharge openings 341 one by one are arranged on the umbrella-shaped distributor 342. The width of the feeding opening 3421 is the same as that of the free discharge opening 341; the umbrella-shaped distributor 342 can freely empty the grain at the bottom of the central column 3 from the free discharge openings 341. Its structure is simple and no additional energy needs to be provided, thus avoiding the accumulation of grain at the bottom column section 33, which can not only improve the loading speed of the silo but also prevent the accumulated material from deteriorating.

[0049] As Figure 8 shown in the figure, in this embodiment, the chute angle α of the feeding opening 3421 satisfies 15° ≤ α ≤ 45°. When α > 45°, on the one hand, the grain is likely to be broken when it falls on the feeding opening 3421 of the umbrella-shaped distributor 342, which will increase the breakage rate of the grain; when α < 15°, the horizontal speed of the grain sliding down from the feeding opening 3421 is small, which will reduce the storage speed.

[0050] As Figure 6 and Figure 8 shown in the figure, in this embodiment, the height h of the umbrella-shaped distributor 342 is 1 / 2 of the height H of the free discharge column section 34.

[0051] The power platform 4 of this embodiment includes a platform body 41, a transmission fixing seat 43 disposed on the platform body 41, a power device 42 disposed on the transmission fixing seat 43 for driving the cloth feeder 5 to lift and lower, and an elastic sling 44 for connecting the platform body 41 to the top of the bin 2. The power device 42 includes a driver 421, a first spiral bevel gear reducer 422, a second spiral bevel gear reducer 423, a third spiral bevel gear reducer 424, a first chain hoist 425, a second chain hoist 426, a third chain hoist 427, and a fourth chain hoist 428. The first chain hoist 425, the second chain hoist 426, the third chain hoist 427, and the fourth chain hoist 428 are respectively connected to the cloth feeder 5. The driver 421 is connected to the input end of the first spiral bevel gear reducer 422 through a coupling. The two output ends of the first spiral bevel gear reducer 422 are respectively connected to the input ends of the second spiral bevel gear reducer 423 and the third spiral bevel gear reducer 424 through a first transmission rod 4291 and a second transmission rod 4292. The two output ends of the second spiral bevel gear reducer 423 are respectively connected to the first chain hoist 425 and the second chain hoist 426 through a third transmission rod 4293 and a fourth transmission rod 4294. The two output ends of the third spiral bevel gear reducer 424 are respectively connected to the third chain hoist 427 and the fourth chain hoist 428 through a fifth transmission rod 4295 and a sixth transmission rod 4296. In the power platform 4 of this embodiment, the platform body 41 is square, and the four corners of the platform body 41 are connected to the top of the bin 2 through four elastic slings 44 respectively. When in use, the driver 421 drives the first spiral bevel gear reducer 422 to rotate through an elastic coupling. The two output ends of the first spiral bevel gear reducer 422 respectively drive the second spiral bevel gear reducer 423 and the third spiral bevel gear reducer 424 to rotate synchronously through the first transmission rod 4291 and the second transmission rod 4292. The two output ends of the second spiral bevel gear reducer 423 respectively drive the first chain hoist 425 and the second chain hoist 426 to wind and unwind synchronously through the third transmission rod 4293 and the fourth transmission rod 4294. The two output ends of the third spiral bevel gear reducer 424 respectively drive the third chain hoist 427 and the fourth chain hoist 428 to wind and unwind synchronously through the fifth transmission rod 4295 and the sixth transmission rod 4296. It realizes synchronous power transmission by adopting a pure mechanical structure, synchronously controls the winding and unwinding of four chain hoists through one power source, realizes the stable lifting of the cloth feeder 5, has a simple structure, a reasonable layout, can reduce the number of drivers 421, reduce costs, reduce the workload of maintenance, can reduce the weight of the entire power platform 4, and thus reduce the risk of damage to the top of the bin 2. Optionally, the driver 421 is a pneumatic motor. Compared with a hydraulic motor and an electric motor, on the one hand, it can reduce the overall weight of the power platform 4, and on the other hand, it can reduce the pollution caused by oil stains and keep the grain clean.

[0052] Such asFigure 16 and Figure 17 As shown in Figure 17 , in this embodiment, the elastic sling 44 includes a suspension seat 441 for connecting to the silo top 2, an elastic buffer structure 442 for connecting to the platform body 41, and a chain 443 for connecting the suspension seat 441 and the elastic buffer structure 442. The elastic buffer structure 442 includes a turnbuckle bolt 4421, a nut 4422 screwed onto the bottom end of the turnbuckle bolt 4421, and a spring 4423 sleeved on the turnbuckle bolt 4421. The top end of the turnbuckle bolt 4421 passes through the platform body 41 and is connected to the chain 443. The spring 4423 is disposed between the platform body 41 and the nut 4422. When the weather is cold, the central column 3 contracts due to the cold, driving the platform body 41 to descend. The spring 4423 can provide a buffer distance for the platform body 41 in the axial direction, preventing the chain 443 from directly pulling the silo top 2 down and causing damage to the silo top 2.

[0053] As Figure 16 and Figure 17 shown in Figure 17 , in this embodiment, the turnbuckle bolt 4421 is connected to the chain 443 through a turnbuckle 444. The turnbuckle 444 includes a ring rod 4441, an upper screw rod 4442 screwed onto the ring rod 4441, an O-shaped joint 4443 disposed on the upper screw rod 4442, a lower screw rod 4444 screwed onto the ring rod 4441, and a U-shaped joint 4445 disposed on the lower screw rod 4444. The O-shaped joint 4443 is connected to the chain 443, and the U-shaped joint 4445 is hinged to the top end of the turnbuckle bolt 4421 through a pin shaft 4446. By rotating the upper screw rod 4442 and / or the lower screw rod 4444, the connection length between the suspension seat 441 and the platform body 41 can be adjusted, so that the platform body 41 is always in a horizontal state, preventing the distributor 5 from getting stuck during the lifting and lowering process and ensuring the smooth progress of grain filling into the silo.

[0054] As Figure 16 and Figure 17 shown in Figure 17 , in this embodiment, the suspension seat 441 includes a first connecting plate 4411 for connecting to the silo top 2, a second connecting plate 4412 for connecting to the chain 443, and a connecting rod 4413 for connecting the first connecting plate 4411 and the second connecting plate 4412. Its structure is simple, the connection is firm, and the processing cost is low.

[0055] As Figure 16 and Figure 17 shown in Figure 17 , in this embodiment, a first reinforcing rib 4414 is disposed between the connecting rod 4413 and the first connecting plate 4411 and / or between the connecting rod 4413 and the second connecting plate 4412 to increase the rigidity of the suspension seat 441 and prevent the suspension seat 441 from deforming.

[0056] As Figure 16 and Figure 17As shown, in this embodiment, a first D-shaped lifting ring 4431 and a second D-shaped lifting ring 4432 are respectively arranged at both ends of the chain 443. A lifting lug 4415 adapted to the first D-shaped lifting ring 4431 is arranged on the second connecting plate 4412. The second D-shaped lifting ring 4432 is connected to the O-shaped joint 4443, enabling the chain 443 to be quickly disassembled and assembled, thus improving the disassembly and assembly efficiency.

[0057] As Figure 16 and Figure 17 shown, in this embodiment, a second reinforcing rib 4416 is arranged between the lifting lug 4415 and the second connecting plate 4412 to enhance the connection strength between the lifting lug 4415 and the second connecting plate 4412 and prevent the lifting lug 4415 from deforming.

[0058] As Figure 13 and Figure 14 shown, in this embodiment, the transmission fixing seat 43 includes a first mounting seat 431 for mounting the driver 421 and the first spiral bevel gear reducer 422, a second mounting seat 432 for mounting the second spiral bevel gear reducer 423 and the first ring chain hoist 425, a third mounting seat 433 for mounting the second ring chain hoist 426, a fourth mounting seat 434 for mounting the third spiral bevel gear reducer 424 and the third ring chain hoist 427, and a fifth mounting seat 435 for mounting the fourth ring chain hoist 428. By shortening the distance between the driver 421 and the first spiral bevel gear reducer 422, shortening the lengths of the third transmission rod 4293 and the fifth transmission rod 4295, and increasing the lengths of the fourth transmission rod 4294 and the sixth transmission rod 4296, the driver 421 and the first spiral bevel gear reducer 422 are mounted on the first mounting seat 431, the second spiral bevel gear reducer 423 and the first ring chain hoist 425 are mounted on the second mounting seat 432, the third spiral bevel gear reducer 424 and the third ring chain hoist 427 are mounted on the fourth mounting seat 434, and the number of the transmission fixing seats 43 is reduced, thereby reducing the assembly difficulty and the overall weight of the power platform 4.

[0059] As Figure 13 and Figure 4 shown, in this embodiment, a column connection flange 411 for connecting the central column 3 is arranged on the platform body 41. By means of the central column 3, the radial position of the platform body 41 is kept unchanged, preventing the spreader 5 from being skewed.

[0060] As Figure 13 shown, in this embodiment, a safety railing 412 is arranged on the platform body 41, which can provide protection when the staff is performing maintenance.

[0061] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A grain silo, characterized in that: The invention comprises a silo (1), a silo roof (2), a central column (3), a power platform (4) and a distributor (5), wherein the central column (3) comprises a movable connection section and a material distribution section, the movable connection section comprises a top column section (31) for connecting to the silo roof (2) and an air duct column section (32) arranged on the power platform (4), the top column section (31) comprises a positioning cylindrical tube (311), a top flange (312) arranged on the positioning cylindrical tube (311) and used for connecting to the silo roof (2), and a top flange (312) arranged on the positioning cylindrical tube (311) and used for connecting to the silo roof (2) and a flange (312) arranged uniformly along the circumference on the positioning cylindrical tube (311) and used for distributing the material. An oblique support rod (313) is connected to the silo top (2); a window (314) for overflow discharge is provided on the positioning cylindrical tube (311); the window (314) is arranged between two adjacent oblique support rods (313); the inner wall (321) of the air duct column section (32) is sleeved on the positioning cylindrical tube (311) and can move relatively in the axial direction; the annular bottom surface (323) of the air duct column section (32) is provided with a connecting flange (3232) for connecting to the power platform (4); and the top surface of the material distribution section is connected to the bottom surface of the power platform (4).

2. The grain silo according to claim 1, characterized in that: The material distribution section of the central column (3) comprises a top column section (31) arranged on the silo top (2), an air duct column section (32) connected to the top column section (31), a bottom column section (33) arranged on the silo bottom ground, a free material discharge column section (34) connected to the bottom column section (33), a controlled material discharge column section (35) and a connecting column section (36) arranged between the free material discharge column section (34) and the air duct column section (32), and a connecting column section (36) between the air duct column section (32) and the controlled material discharge column section (35), between the controlled material discharge column section (35) and the free material discharge column section (34), and between two adjacent controlled material discharge column sections (35). 36) is connected, the controlled discharge column section (35) is evenly provided with controlled discharge ports (353) and a discharge door (351) for shielding the controlled discharge ports (353) along the circumferential direction, and a discharge speed-up device (352) is arranged on both sides of each of the controlled discharge ports (353), and the discharge speed-up device (352) comprises a bracket (3521) for connecting the controlled discharge column section (35), a wind knife (3522) arranged on the bracket (3521) for supplying air toward the controlled discharge port (353), an air pipe joint (3523) arranged on the air knife (3522), and an air pipe for connecting the air pipe joint (3523) with an external circulation fan.

3. The grain silo according to claim 2, characterized in that: The outer side walls of the bottom column section (33), the free discharge column section (34), the controlled discharge column section (35) and the connecting column section (36) are provided with mutually connected ventilation ducts (37), the ventilation duct (37) is connected with the duct column section (32), the discharge speed-up device (352) is arranged in the ventilation duct (37), the outer cylinder wall (322) of the duct column section (32) is provided with an external duct flange (3221) for connecting to an external circulation fan, and the annular bottom surface (323) of the duct column section (32) is provided with a duct interface (3231) for connecting to the ventilation duct (37).

4. The grain silo according to claim 3, characterized in that: The controlled discharge column section (35) is provided with a linear drive mechanism (354) for driving the discharge door (351) to move axially, and the discharge door (351) is slidably connected to the controlled discharge port (353).

5. The grain silo according to claim 4, characterized in that: The free discharge column section (34) is evenly provided with free discharge ports (341) along the circumferential direction, an umbrella-shaped distributor (342) is provided inside the free discharge column section (34), and the umbrella-shaped distributor (342) is provided with discharge ports (3421) corresponding to the free discharge ports (341) one by one, and the width of the discharge ports (3421) is consistent with the width of the free discharge port (341).

6. The grain silo according to any one of claims 1 to 5, characterized in that: The power platform (4) comprises a platform body (41), a transmission fixing seat (43) arranged on the platform body (41), a power device (42) arranged on the transmission fixing seat (43) for driving the distributor (5) to move up and down, and an elastic sling (44) for connecting the platform body (41) to the silo roof (2); the power device (42) comprises a driver (421), a first spiral bevel gear reducer (422), a second spiral bevel gear reducer (423), a third spiral bevel gear reducer (424), a first chain hoist (425), a second chain hoist (426), a third chain hoist (427), and a fourth chain hoist (428); the first chain hoist (425), the second chain hoist (426), the third chain hoist (427), and the fourth chain hoist (428) are The chain hoists (428) are respectively connected to the distributors (5); the driver (421) is connected to the input end of the first spiral bevel gear reducer (422) through a coupling; the two output ends of the first spiral bevel gear reducer (422) are respectively connected to the input end of the second spiral bevel gear reducer (423) and the input end of the third spiral bevel gear reducer (424) through a first transmission rod and a second transmission rod; the two output ends of the second spiral bevel gear reducer (423) are respectively connected to the first chain hoist (425) and the second chain hoist (426) through a third transmission rod and a fourth transmission rod; the two output ends of the third spiral bevel gear reducer (424) are respectively connected to the third chain hoist (427) and the fourth chain hoist (428) through a fifth transmission rod and a sixth transmission rod.

7. The grain silo according to claim 6, characterized in that: The elastic sling (44) comprises a suspension seat (441) for connecting the silo roof (2), an elastic buffer structure (442) for connecting the platform body (41), and a chain (443) for connecting the suspension seat (441) and the elastic buffer structure (442); the elastic buffer structure (442) comprises a hinge bolt (4421), a nut (4422) screwed on the bottom end of the hinge bolt (4421), and a spring (4423) sleeved on the hinge bolt (4421); the top end of the hinge bolt (4421) passes through the platform body (41) and is connected to the chain (443); the spring (4423) is arranged between the platform body (41) and the nut (4422).

8. The grain silo according to claim 7, characterized in that: The articulated bolt (4421) is connected to the chain (443) via a turnbuckle (444); the turnbuckle (444) comprises a ring rod (4441), an upper screw rod (4442) screwed onto the ring rod (4441), an O-shaped joint (4443) arranged on the upper screw rod (4442), a lower screw rod (4444) screwed onto the ring rod (4441), and a U-shaped joint (4445) arranged on the lower screw rod (4444); the O-shaped joint (4443) is connected to the chain (443); and the U-shaped joint (4445) is hinged to the top end of the articulated bolt (4421) via a pin (4446).

9. The grain silo according to claim 8, characterized in that: The suspension seat (441) comprises a first connecting plate (4411) for connecting the silo roof (2), a second connecting plate (4412) for connecting the chain (443), and a connecting rod (4413) for connecting the first connecting plate (4411) and the second connecting plate (4412); a first reinforcing rib (4414) is arranged between the connecting rod (4413) and the first connecting plate (4411) and / or between the connecting rod (4413) and the second connecting plate (4412); a first D-shaped lifting ring (4431) and a second D-shaped lifting ring (4432) are arranged at both ends of the chain (443); a lifting ear (4415) adapted to the first D-shaped lifting ring (4431) is arranged on the second connecting plate (4412); and the second D-shaped lifting ring (4432) is connected to the O-shaped joint (4443).

10. The grain silo according to claim 6, characterized in that: The transmission fixing seat (43) comprises a first mounting seat (431) for mounting the driver (421) and the first spiral bevel gear reducer (422), a second mounting seat (432) for mounting the second spiral bevel gear reducer (423) and the first chain hoist (425), a third mounting seat (433) for mounting the second chain hoist (426), a fourth mounting seat (434) for mounting the third spiral bevel gear reducer (424) and the third chain hoist (427), and a fifth mounting seat (435) for mounting the fourth chain hoist (428).

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