Power platform of grain silo

Abstract

The utility model discloses a power platform of a grain silo, which comprises a platform body, a transmission fixing seat, a power device and an elastic sling, the power device comprises a driver, a first spiral bevel gear speed reducer, a second spiral bevel gear speed reducer, a third spiral bevel gear speed reducer, a first loop chain hoist, a second loop chain hoist, a third loop chain hoist and a fourth loop chain hoist, and the driver drives the first spiral bevel gear speed reducer to rotate; the first spiral bevel gear speed reducer drives the input end of the second spiral bevel gear speed reducer and the third spiral bevel gear speed reducer to rotate synchronously, a first loop chain hoist and a second loop chain hoist of the second spiral bevel gear speed reducer are wound and unwound synchronously, and the third spiral bevel gear speed reducer drives the third loop chain hoist and a fourth loop chain hoist to be wound and unwound synchronously; the four chain hoists are synchronously controlled to be wound and unwound through one power source, the structure is simple, the cost can be reduced, the maintenance workload is reduced, the weight of the power platform is reduced, and therefore the risk that the bin top is damaged is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, and particularly to a power platform for a grain silo. Background Art

[0002] A 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. Grains enter the central column from the grain inlet and are then dispersed in the grain silo through a distributor. Due to the high height of the silo, in order to avoid the problem of intense collision when the grains fall and resulting in grain breakage, a power platform is used to drive the distributor to lift and lower, so as to adjust the height of the falling grains.

[0003] The existing grain silos drive the distributor to lift and lower through multiple chain hoists, and each chain hoist is driven by a separate driver. This driving method has a high cost, a large amount of maintenance work, and a relatively large weight of the power platform, which poses a risk of damaging the silo top; in addition, it is difficult to debug the synchronous rotation of multiple drivers through a program. Summary of the Utility Model

[0004] The utility model provides a power platform for a grain silo to solve the technical problems of high cost, large amount of maintenance work, relatively large weight of the power platform, and the risk of damaging the silo top of the existing power platform for a grain silo.

[0005] According to one aspect of the utility model, a power platform for a grain silo is provided, which includes a platform body, a transmission fixing seat arranged on the platform body, a power device arranged on the transmission fixing seat for driving the distributor to lift and lower, and an elastic sling for connecting the platform body to the silo top. 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 distributor. The driver is connected to the input end of the first spiral bevel gear reducer through a coupling. The two output ends of the first spiral bevel gear reducer are respectively connected to the input ends of the second spiral bevel gear reducer and the third spiral bevel gear reducer through a first transmission rod and a second transmission rod. The 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. The 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.

[0006] Further, the elastic sling includes a suspension seat for connecting to the top of the bin, 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 onto 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, and the spring is disposed between the platform body and the nut.

[0007] Further, the turnbuckle bolt is connected to the chain through a screw eye. The screw eye includes a ring rod, an upper screw rod screwed onto the ring rod, an O-shaped joint disposed on the upper screw rod, a lower screw rod screwed onto the ring rod, and a U-shaped joint disposed on the lower screw rod. The O-shaped joint is connected to the chain, and the U-shaped joint is hinged to the top end of the turnbuckle bolt through a pin shaft.

[0008] Further, the suspension seat includes a first connecting plate for connecting to the top of the bin, a second connecting plate for connecting to the chain, and a connecting rod for connecting the first connecting plate and the second connecting plate.

[0009] Further, 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.

[0010] Further, a first D-shaped lifting ring and a second D-shaped lifting ring 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, and the second D-shaped lifting ring is connected to the O-shaped joint.

[0011] Further, second reinforcing ribs are disposed between the lifting lug and the second connecting plate.

[0012] Further, the transmission fixing seat includes a first mounting seat for mounting the driver and the first helical bevel gear reducer, a second mounting seat for mounting the second helical bevel gear reducer and the first ring chain hoist, a third mounting seat for mounting the second ring chain hoist, a fourth mounting seat for mounting the third helical bevel gear reducer and the third ring chain hoist, and a fifth mounting seat for mounting the fourth ring chain hoist.

[0013] Further, a column connection flange for connecting to the central column is disposed on the platform body.

[0014] Further, a safety railing is disposed on the platform body.

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

[0016] The power platform of the grain silo of the present utility model has a square platform body. Four corners of the platform body are connected to the top of the silo through four elastic suspension cables respectively. During use, the driver drives the first spiral bevel gear reducer to rotate through an elastic coupling. Two output ends of the first spiral bevel gear reducer drive the second spiral bevel gear reducer and the third spiral bevel gear reducer to rotate synchronously through the first transmission rod and the second transmission rod respectively. Two output ends of the second spiral bevel gear reducer drive the first ring chain hoist and the second ring chain hoist to take in and pay out the ropes synchronously through the third transmission rod and the fourth transmission rod respectively. Two output ends of the third spiral bevel gear reducer drive the third ring chain hoist and the fourth ring chain hoist to take in and pay out the ropes synchronously through the fifth transmission rod and the sixth transmission rod respectively. It realizes synchronous power transmission by adopting a pure mechanical structure, synchronously controls the taking in and paying out of the four ring chain hoists through one power source, realizes the stable lifting of the spreader, has a simple structure, reasonable layout, can reduce the number of drivers, reduce costs, reduce the workload of maintenance, can reduce the weight of the entire power platform, and thus reduce the risk of damage to the top of the silo.

[0017] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to make a further detailed description of the present 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 present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

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

[0020] Figure 2 is a schematic structural diagram of the platform body of the preferred embodiment of the present utility model;

[0021] Figure 3 is a top view of the platform body of the preferred embodiment of the present utility model;

[0022] Figure 4 is a schematic structural diagram of the power device of the preferred embodiment of the present utility model;

[0023] Figure 5 is a schematic structural diagram of the elastic suspension cable of the preferred embodiment of the present utility model;

[0024] Figure 6 is a schematic structural diagram of the turnbuckle of the preferred embodiment of the present utility model.

[0025] LEGEND DESCRIPTION:

[0026] 1. Platform body; 11. Column connection flange; 12. Guardrail; 2. Power device; 21. Driver; 22. First spiral bevel gear reducer; 23. Second spiral bevel gear reducer; 24. Third spiral bevel gear reducer; 25. First ring chain hoist; 26. Second ring chain hoist; 27. Third ring chain hoist; 28. Fourth ring chain hoist; 291. First transmission rod; 292. Second transmission rod; 293. Third transmission rod; 294. Fourth transmission rod; 295. Fifth transmission rod; 296. Sixth transmission rod; 3. Transmission fixed seat; 31. First mounting seat; 32. Second mounting seat; 33. Third mounting seat; 34. Fourth mounting seat; 35. Fifth mounting seat; 4. Elastic sling; 41. Suspension seat; 411. First connecting plate; 412. Second connecting plate; 413. Connecting rod; 414. First reinforcing rib; 415. Suspension ear; 416. Second reinforcing rib; 42. Elastic buffer structure; 421. Eye bolt; 422. Nut; 423. Spring; 43. Chain; 431. First D-shaped lifting ring; 432. Second D-shaped lifting ring; 44. Turnbuckle; 441. Ring rod; 442. Upper screw rod; 443. O-shaped joint; 444. Lower screw rod; 445. U-shaped joint; 446. Pin; 5. Distributor. Detailed implementation manners

[0027] The following will describe in detail the embodiments of the present invention with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the following.

[0028] Please refer to Figures 1 to 6, the power platform of the grain silo in this embodiment includes a platform body 1, a transmission fixing seat 3 disposed on the platform body 1, a power device 2 disposed on the transmission fixing seat 3 for driving the cloth distributor 5 to lift and lower, and an elastic sling 4 for connecting the platform body 1 to the silo top. The power device 2 includes a driver 21, a first spiral bevel gear reducer 22, a second spiral bevel gear reducer 23, a third spiral bevel gear reducer 24, a first chain hoist 25, a second chain hoist 26, a third chain hoist 27, and a fourth chain hoist 28. The first chain hoist 25, the second chain hoist 26, the third chain hoist 27, and the fourth chain hoist 28 are respectively connected to the cloth distributor 5. The driver 21 is connected to the input end of the first spiral bevel gear reducer 22 through a coupling. The two output ends of the first spiral bevel gear reducer 22 are respectively connected to the input ends of the second spiral bevel gear reducer 23 and the third spiral bevel gear reducer 24 through a first transmission rod 291 and a second transmission rod 292. The two output ends of the second spiral bevel gear reducer 23 are respectively connected to the first chain hoist 25 and the second chain hoist 26 through a third transmission rod 293 and a fourth transmission rod 294. The two output ends of the third spiral bevel gear reducer 24 are respectively connected to the third chain hoist 27 and the fourth chain hoist 28 through a fifth transmission rod 295 and a sixth transmission rod 296.

[0029] The power platform of the grain silo in this embodiment, the platform body 1 is square, and the four corners of the platform body 1 are connected to the silo top through four elastic slings 4 respectively. When in use, the driver 21 drives the first spiral bevel gear reducer 22 to rotate through an elastic coupling. The two output ends of the first spiral bevel gear reducer 22 respectively drive the second spiral bevel gear reducer 23 and the third spiral bevel gear reducer 24 to rotate synchronously through the first transmission rod 291 and the second transmission rod 292. The two output ends of the second spiral bevel gear reducer 23 respectively drive the first chain hoist 25 and the second chain hoist 26 to wind and unwind synchronously through the third transmission rod 293 and the fourth transmission rod 294. The two output ends of the third spiral bevel gear reducer 24 respectively drive the third chain hoist 27 and the fourth chain hoist 28 to wind and unwind synchronously through the fifth transmission rod 295 and the sixth transmission rod 296. 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 and lowering of the cloth distributor 5, has a simple structure, a reasonable layout, can reduce the number of drivers 21, reduce costs, reduce the workload of maintenance, can reduce the weight of the entire power platform, and thus reduce the risk of damage to the silo top. Optionally, the driver 21 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, and on the other hand, it can reduce the pollution caused by oil stains and keep the grain clean.

[0030] Such as Figure 5 and Figure 6As shown in the figure, in this embodiment, the elastic sling 4 includes a suspension seat 41 for connecting to the top of the bin, an elastic buffer structure 42 for connecting to the platform body 1, and a chain 43 for connecting the suspension seat 41 and the elastic buffer structure 42. The elastic buffer structure 42 includes a swivel bolt 421, a nut 422 screwed onto the bottom end of the swivel bolt 421, and a spring 423 sleeved on the swivel bolt 421. The top end of the swivel bolt 421 passes through the platform body 1 and is connected to the chain 43. The spring 423 is arranged between the platform body 1 and the nut 422. When the weather is cold, the central column contracts due to the cold, driving the platform body 1 to descend. The spring 423 can provide a buffer distance for the platform body 1 in the axial direction, preventing the chain 43 from directly pulling the top of the bin down and causing damage to the top of the bin.

[0031] As Figure 5 and Figure 6 shown in the figure, in this embodiment, the swivel bolt 421 is connected to the chain 43 through a turnbuckle 44. The turnbuckle 44 includes a ring rod 441, an upper screw rod 442 screwed onto the ring rod 441, an O-shaped joint 443 arranged on the upper screw rod 442, a lower screw rod 444 screwed onto the ring rod 441, and a U-shaped joint 445 arranged on the lower screw rod 444. The O-shaped joint 443 is connected to the chain 43, and the U-shaped joint 445 is hinged to the top end of the swivel bolt 421 through a pin shaft 446. By rotating the upper screw rod 442 and / or the lower screw rod 444, the connection length between the suspension seat 41 and the platform body 1 can be adjusted, so that the platform body 1 is always in a horizontal state, preventing the cloth distributor 5 from getting stuck during the lifting and lowering process and ensuring the smooth progress of grain entering the bin.

[0032] As Figure 5 and Figure 6 shown in the figure, in this embodiment, the suspension seat 41 includes a first connecting plate 411 for connecting to the top of the bin, a second connecting plate 412 for connecting to the chain 43, and a connecting rod 413 for connecting the first connecting plate 411 and the second connecting plate 412. Its structure is simple, the connection is firm, and the processing cost is low.

[0033] As Figure 5 and Figure 6 shown in the figure, in this embodiment, a first reinforcing rib 414 is arranged between the connecting rod 413 and the first connecting plate 411 and / or between the connecting rod 413 and the second connecting plate 412 to increase the rigidity of the suspension seat 41 and prevent the suspension seat 41 from deforming.

[0034] As Figure 5 and Figure 6 shown in the figure, in this embodiment, a first D-shaped lifting ring 431 and a second D-shaped lifting ring 432 are respectively arranged at both ends of the chain 43. A lifting lug 415 adapted to the first D-shaped lifting ring 431 is arranged on the second connecting plate 412. The second D-shaped lifting ring 432 is connected to the O-shaped joint 443, which can quickly disassemble and assemble the chain 43 and improve the disassembly and assembly efficiency.

[0035] As Figure 5 and Figure 6 shown, in this embodiment, a second reinforcing rib 416 is disposed between the lifting lug 415 and the second connecting plate 412 to enhance the connection strength between the lifting lug 415 and the second connecting plate 412 and prevent the lifting lug 415 from deforming.

[0036] As Figure 2 and Figure 3 shown, in this embodiment, the transmission fixing seat 3 includes a first mounting seat 31 for mounting the driver 21 and the first spiral bevel gear reducer 22, a second mounting seat 32 for mounting the second spiral bevel gear reducer 23 and the first ring chain hoist 25, a third mounting seat 33 for mounting the second ring chain hoist 26, a fourth mounting seat 34 for mounting the third spiral bevel gear reducer 24 and the third ring chain hoist 27, and a fifth mounting seat 35 for mounting the fourth ring chain hoist 28. By shortening the distance between the driver 21 and the first spiral bevel gear reducer 22, shortening the lengths of the third transmission rod 293 and the fifth transmission rod 295, and increasing the lengths of the fourth transmission rod 294 and the sixth transmission rod 296, the driver 21 and the first spiral bevel gear reducer 22 are mounted on the first mounting seat 31, the second spiral bevel gear reducer 23 and the first ring chain hoist 25 are mounted on the second mounting seat 32, the third spiral bevel gear reducer 24 and the third ring chain hoist 27 are mounted on the fourth mounting seat 34, and the number of the transmission fixing seats 3 is reduced, thereby reducing the assembly difficulty and reducing the overall weight of the power platform.

[0037] As Figure 2 and Figure 3 shown, in this embodiment, a column connection flange 11 for connecting the central column is disposed on the platform body 1, and the radial position of the platform body 1 is kept unchanged through the central column to prevent the distributor 5 from deflecting.

[0038] As Figure 2 shown, in this embodiment, a guardrail 12 is disposed on the platform body 1 to provide protection when the staff is performing maintenance.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power platform for a grain silo, characterized in that: The invention comprises a platform body (1), a transmission fixing seat (3) arranged on the platform body (1), a power device (2) arranged on the transmission fixing seat (3) for driving a distributor to rise and fall, and an elastic sling (4) for connecting the platform body (1) to a warehouse roof, wherein the power device (2) comprises a driver (21), a first spiral bevel gear reducer (22), a second spiral bevel gear reducer (23), a third spiral bevel gear reducer (24), a first chain hoist (25), a second chain hoist (26), a third chain hoist (27), and a fourth chain hoist (28), wherein the first chain hoist (25), the second chain hoist (26), the third chain hoist (27), and the fourth chain hoist (28) are respectively connected to the first chain hoist (25), the second chain hoist (26), the third chain hoist (27), and the fourth chain hoist (28). The drive (21) is connected to the input end of the first spiral bevel gear reducer (22) through a coupling; the two output ends of the first spiral bevel gear reducer (22) are connected to the input end of the second spiral bevel gear reducer (23) and the input end of the third spiral bevel gear reducer (24) through a first transmission rod and a second transmission rod respectively; the two output ends of the second spiral bevel gear reducer (23) are connected to the first chain hoist (25) and the second chain hoist (26) through a third transmission rod and a fourth transmission rod respectively; the two output ends of the third spiral bevel gear reducer (24) are connected to the third chain hoist (27) and the fourth chain hoist (28) through a fifth transmission rod and a sixth transmission rod respectively.

2. The power platform of the grain silo according to claim 1, characterized in that: The elastic sling (4) comprises a suspension seat (41) for connecting to the warehouse roof, an elastic buffer structure (42) for connecting to the platform body (1), and a chain (43) for connecting the suspension seat (41) and the elastic buffer structure (42); the elastic buffer structure (42) comprises a hinge bolt (421), a nut (422) screwed on the bottom end of the hinge bolt (421), and a spring (423) sleeved on the hinge bolt (421); the top end of the hinge bolt (421) passes through the platform body (1) and is connected to the chain (43); the spring (423) is arranged between the platform body (1) and the nut (422).

3. The power platform of the grain silo according to claim 2, characterized in that: The articulated bolt (421) is connected to the chain (43) via a turnbuckle (44); the turnbuckle (44) comprises a ring rod (441), an upper screw rod (442) screwed onto the ring rod (441), an O-shaped joint (443) arranged on the upper screw rod (442), a lower screw rod (444) screwed onto the ring rod (441), and a U-shaped joint (445) arranged on the lower screw rod (444); the O-shaped joint (443) is connected to the chain (43); and the U-shaped joint (445) is hinged to the top end of the articulated bolt (421) via a pin shaft (446).

4. The power platform of the grain silo according to claim 3, characterized in that: The hanging seat (41) comprises a first connecting plate (411) for connecting to the warehouse roof, a second connecting plate (412) for connecting to the chain (43), and a connecting rod (413) for connecting the first connecting plate (411) and the second connecting plate (412).

5. The power platform of the grain silo according to claim 4, characterized in that: A first reinforcing rib (414) is arranged between the connecting rod (413) and the first connecting plate (411) and / or between the connecting rod (413) and the second connecting plate (412).

6. The power platform of the grain silo according to claim 5, characterized in that: A first D-shaped lifting ring (431) and a second D-shaped lifting ring (432) are respectively arranged at both ends of the chain (43); a lifting ear (415) adapted to the first D-shaped lifting ring (431) is arranged on the second connecting plate (412); and the second D-shaped lifting ring (432) is connected to the O-shaped joint (443).

7. The power platform of the grain silo according to claim 6, characterized in that: A second reinforcing rib (416) is arranged between the lifting ear (415) and the second connecting plate (412).

8. The power platform of the grain silo according to claim 1, characterized in that: The transmission fixing seat (3) comprises a first mounting seat (31) for mounting the driver (21) and the first spiral bevel gear reducer (22), a second mounting seat (32) for mounting the second spiral bevel gear reducer (23) and the first chain hoist (25), a third mounting seat (33) for mounting the second chain hoist (26), a fourth mounting seat (34) for mounting the third spiral bevel gear reducer (24) and the third chain hoist (27), and a fifth mounting seat (35) for mounting the fourth chain hoist (28).

9. The power platform of the grain silo according to claim 1, characterized in that: The platform body (1) is provided with a column connecting flange (11) for connecting to a central column.

10. The power platform of the grain silo according to claim 1, characterized in that: A protective railing (12) is arranged on the platform body (1).

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