A harvester unloading drive system based on an electromagnetic clutch assembly

Abstract

The utility model discloses a kind of harvesting machine grain unloading transmission systems based on electromagnetic clutch assembly, including grain box auger, the both ends of grain box auger are fixed to two auger shafts, the auger shaft is installed on the support plate of both ends by bearing seat bearing;Wherein, electromagnetic clutch assembly is installed on the auger shaft of grain box auger drive end, the electromagnetic clutch assembly is fixedly connected with grain box sprocket, the grain box sprocket is connected with grain unloading cylinder sprocket by chain, the grain unloading cylinder sprocket is driven by belt drive and chain drive;The utility model adds electromagnetic clutch assembly in the grain box auger drive end of harvesting machinery grain unloading system, realizes subsection grain unloading processing, decomposes load, so that whole grain unloading system is optimized, can improve grain unloading system life.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural equipment technology, specifically relating to a harvester unloading system based on an electromagnetic clutch assembly. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] The unloading device of the harvester includes a grain bin and an unloading hopper. The grain outlet of the grain bin is directly connected to the grain inlet of the unloading hopper, forming a continuous grain conveying path. A grain bin auger is installed inside the grain bin to push the grain from the grain bin into the unloading hopper. An unloading hopper auger is installed inside the unloading hopper to discharge the grain from the unloading hopper.

[0004] Currently, most grain unloading devices in harvesting machinery use hydraulic main and secondary actuators to simultaneously drive the unloading cylinder auger and grain box auger. Their working principle is as follows: Figure 8 As shown, during grain unloading operations, the hydraulic unloading main clutch is used to tighten the belt, driving the unloading cylinder auger and grain box auger simultaneously via belt and chain drives. This cycle repeats to achieve the unloading operation. The problems with this transmission structure are: 1. Repeated belt tightening to control the synchronous operation of the two augers leads to frequent hydraulic clutch operation, excessive system load, and long-term fatigue damage to the equipment; 2. Simultaneous start-up of the two augers causes a surge in instantaneous load, further aggravating wear on the transmission chain and shortening the lifespan of the unloading system; 3. Independent control of the grain box auger is impossible, making staged unloading difficult and limiting the efficiency and flexibility of the unloading system. Utility Model Content

[0005] The purpose of this invention is to provide a harvester unloading transmission system based on an electromagnetic clutch assembly, which can realize segmented unloading, distribute the load, optimize the entire unloading system, and improve the service life of the unloading system.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] In a first aspect, embodiments of this utility model provide a harvester unloading transmission system based on an electromagnetic clutch assembly, including a grain tank auger. The two ends of the grain tank auger are fixed to two auger shafts, which are mounted on support plates at both ends via bearings with bearing seats. An electromagnetic clutch assembly is installed on the auger shaft at the transmission end of the grain tank auger. The electromagnetic clutch assembly is fixedly connected to a grain tank sprocket, which is connected to an unloading sprocket via a chain. The unloading sprocket is driven by belt drive and chain drive.

[0008] As a further technical solution, the electromagnetic clutch assembly includes a keypad component, a transmission disc component, and an iron core component arranged coaxially; wherein, the iron core component is installed inside the transmission disc component, the transmission disc component is mounted on the auger shaft via bearings, the end face of the transmission disc component is in contact with the end face of the keypad component, and the outer circumferential surface of the transmission disc component is fixedly connected to the grain bin sprocket.

[0009] As a further technical solution, the keypad component includes a fixedly connected suction plate, a protective cover, a spring plate, and a keypad, wherein the spline holes on the keypad match the splines on the auger switch.

[0010] As a further technical solution, the transmission disk component includes a transmission disk, a bearing, and a retaining ring. The bearing is concentrically mounted inside the transmission disk and is limited by the retaining ring.

[0011] As a further technical solution, the iron core component includes a coil, an iron core, and a bracket. The coil is installed inside the iron core, the iron core is fixed on the bracket, and the bracket is fixed on a support plate.

[0012] As a further technical solution, the coil is connected to a plug via a wire, and the plug is connected to the control port of the whole machine.

[0013] As a further technical solution, the iron core and the coil are encapsulated and cured into an integral structure using resin.

[0014] As a further technical solution, the electromagnetic clutch assembly is installed on the auger shaft and then tightened by the flange nut to achieve circumferential positioning.

[0015] As a further technical solution, the bearing with bearing housing is fixed to the support plate by bolts.

[0016] As a further technical solution, when the electromagnetic clutch assembly is energized, the grain tank auger and the unloading cylinder auger work simultaneously; when the electromagnetic clutch assembly is de-energized, the grain tank auger stops working, and the unloading cylinder auger starts working.

[0017] The beneficial effects of the above-described embodiments of this utility model are as follows:

[0018] (1) This utility model sets an electromagnetic clutch assembly at the drive end of the grain tank auger, and uses the electromagnetic clutch assembly to realize independent control of the grain tank auger, which can eliminate the frequent operation of the hydraulic main clutch. In the traditional system, the hydraulic main clutch needs to tighten / loosen the belt every time the grain is unloaded. In this utility model, the hydraulic main clutch only controls the continuous operation of the unloading cylinder auger, and the grain tank auger is controlled by the electromagnetic clutch to start and stop. The grain tank auger can be started immediately after the grain unloading cylinder is emptied of the remaining grain, avoiding frequent operation of the hydraulic main clutch, excessive system load, and extending the service life of the equipment.

[0019] (2) The segmented unloading control principle of this utility model can eliminate the risk of overload of the transmission chain:

[0020] The grain tank auger starts after the grain unloading hopper is emptied (the electromagnetic clutch is energized), avoiding the maximum resistance torque during the initial start-up of the auger. This reduces the maximum tension on the drive chain, thus decreasing the wear rate of the chain links.

[0021] (3) This utility model can realize the emptying of the grain unloading cylinder before starting the grain box auger, which solves the problem of grain accumulating at the cylinder opening in the traditional mode. The grain box auger only works after the grain unloading cylinder is emptied, which reduces the system power consumption. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is a schematic diagram of the structure of the harvester unloading transmission system based on the electromagnetic clutch assembly of this utility model;

[0024] Figure 2 This is a cross-sectional view of the harvester unloading transmission system based on an electromagnetic clutch assembly according to this utility model.

[0025] Figure 3 This is a schematic diagram of the structure of the electromagnetic clutch assembly of this utility model;

[0026] Figure 4 This is a structural schematic diagram of the keyboard component of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the transmission disc component of this utility model;

[0028] Figure 6 This is a structural schematic diagram of the iron core component of this utility model;

[0029] Figure 7 This is the working principle of the harvester unloading transmission system of this utility model;

[0030] Figure 8 This describes the working principle of the existing harvester unloading transmission system.

[0031] The diagram is for illustrative purposes only.

[0032] Among them, 11. Grain tank auger; 12. Support plate; 13. Sprocket; 14. Electromagnetic clutch assembly; 15. Auger shaft; 16. Flange nut; 17. Chain; 18. First bolt; 19. Bearing with bearing seat; 20. Second bolt; 21. Third bolt; 22. Keyboard assembly; 23. Transmission disc assembly; 24. Iron core assembly; 25. Suction disc; 26. Protective cover; 27. Spring plate; 28. First screw; 29. ​​Keyboard assembly; 30. Second screw; 31. Transmission disc; 32. Bearing; 33. Retaining ring; 34. Coil; 35. Resin; 36. Iron core; 37. Bracket; 38. Fourth bolt; 39. Wire; 40. Plug. Detailed Implementation

[0033] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] In existing harvester unloading transmission systems, the two ends of the grain auger are fixed to two auger shafts respectively. The two auger shafts pass through end support plates, and bearings with bearing seats are fitted at both ends and bolted to the support plates. The sprocket and connecting disc are positioned by a stop and end face, and after being bolted together, they are mounted on one end of the auger shaft via a flat key. The chain is mounted on the sprocket. Its working principle is as follows: Figure 8 As shown, during the unloading operation of the harvesting machinery, the hydraulic unloading main clutch is controlled to tighten the belt, and the unloading cylinder auger and grain box auger are driven to work simultaneously through belt drive and chain drive. This cycle is repeated to achieve the unloading operation.

[0035] The existing unloading transmission system of harvesters causes frequent operation of the hydraulic unloading main clutch and heavy load on the unloading system during unloading operations, and it cannot achieve segmented unloading of grain from the unloading hopper and grain box.

[0036] Example 1

[0037] To address the problems existing in the prior art, a typical embodiment of this utility model is as follows: Figure 1 As shown, a harvester unloading transmission system based on an electromagnetic clutch assembly 14 is provided, including a grain tank auger 11. The two ends of the grain tank auger 11 are fixed to two auger shafts 15 respectively. The auger shafts 15 are mounted on support plates 12 at both ends via bearings 3219. The electromagnetic clutch assembly 14 is installed on the auger shaft 15 at the transmission end of the grain tank auger 11. The electromagnetic clutch assembly 14 is fixedly connected to a grain tank sprocket 13. The grain tank sprocket 13 is connected to a unloading sprocket 13 via a chain 17. The unloading sprocket 13 is driven by belt drive and chain drive.

[0038] In this embodiment, the electromagnetic clutch assembly 14 is integrated into the drive shaft of the grain tank auger 11. The linkage control with the unloading cylinder auger is realized through chain transmission. The electromagnetic clutch assembly 14 enables the grain tank auger 11 to start and stop independently, realizing segmented grain unloading. By distributing the load, the entire unloading system is optimized, which can improve the service life of the unloading system.

[0039] like Figures 2-6 As shown, the electromagnetic clutch assembly 14 includes a keypad 29 component 22, a transmission disc 31 component 23, and an iron core 36 component 24. The iron core 36 component 24 is installed inside the transmission disc 31 component 23, which is mounted on the auger shaft 15 via a bearing 32. The end face of the transmission disc 31 component 23 is in contact with the end face of the keypad 29 component 22, and the other end face of the keypad 29 component 22 is fixedly connected to the grain tank sprocket 13. The keypad 29 component 22 is used to transmit power between the sprocket 13 and the auger shaft 15. The transmission disc 31 component 23 provides support for the iron core 36 component 24. The iron core 36 component 24, by switching on and off power, causes the transmission disc 31 component 23 to have or lose magnetic force, thereby causing the transmission disc 31 component 23 and the keypad 29 component 22 to engage and disengage, thus realizing the power transmission and disconnection between the sprocket 13 and the auger shaft 15, and ultimately achieving independent control of the grain tank auger 11.

[0040] like Figure 4 As shown, the keypad 29 component 22 includes a fixedly connected suction plate 25, a protective cover 26, a spring plate 27, and a keypad 29. The spline holes on the keypad 29 match the splines on the auger shaft 15. During installation, the suction plate 25, the protective cover 26, and the spring plate 27 are concentrically fastened together sequentially using the first screw 28. Then, the assembled components are concentrically fixed to the keypad 29 using the second screw 30. The spring plate 27 buffers the suction impact, preventing hard contact from damaging the spline teeth. Simultaneously, the spline holes within the keypad 29 engage with the splines on the auger shaft 15, increasing the contact area between the keypad 29 and the splines on the auger shaft 15 during transmission, ensuring the stability of the transmission process.

[0041] like Figure 5 As shown, the transmission disk 31 component 23 includes a transmission disk 31, a bearing 32, and a retaining ring 33. The bearing 32 is concentrically installed inside the transmission disk 31 and is limited by the retaining ring 33. During installation, the bearing 32 is concentrically installed inside the transmission disk 31, and the retaining ring 33 is installed into the retaining ring 33 groove of the transmission disk 31 to achieve end face positioning of the bearing 32.

[0042] like Figure 6As shown, the iron core 36 component 24 includes a coil 34, an iron core 36, and a bracket 37. The coil 34 is installed inside the iron core 36, the iron core 36 is fixed to the bracket 37, and the bracket 37 is fixed to the support plate 12. The coil 34 is connected to a plug 40 via a wire 39, and the plug 40 is connected to the control port of the whole machine. Further, the iron core 36 and the coil 34 are encapsulated and cured into a single structure using resin 35. During installation, the coil 34 is concentrically inserted into the iron core 36, the coil 34 is connected to the wire 39, the other end of the wire 39 is connected to the plug 40, the coil 34 and the iron core 36 are encapsulated and cured into a single structure using resin 35, the bracket 37 is positioned with the iron core 36 via a stop, and is tightened and fixed using a fourth bolt 38. By encapsulating and curing the coil 34 and the iron core 36 into a single structure using resin 35, dust and moisture protection can be achieved.

[0043] In this embodiment, the electromagnetic clutch assembly 14 is installed on the auger shaft 15 and then tightened by the flange nut 16 to achieve circumferential positioning.

[0044] In this embodiment, the bearing 3219 with bearing 32 is fixed to the support plate 12 by the first bolt 18.

[0045] In this embodiment, the unloading transmission system for the harvester is installed such that both ends of the grain tank auger 11 are fixed to two auger shafts 15 respectively. The two auger shafts 15 pass through the end support plates 12, and bearings 3219 with bearing seats 32 are fitted onto both ends and fixed to the support plates 12 using second bolts 20. The sprocket 13 and the electromagnetic clutch assembly 14 are positioned by a stop and end face, and after being fixed together by a first bolt 18, they are coaxially fitted onto the auger shafts 15 at the drive end. The inner hole of the iron core 36 component 24 in the electromagnetic clutch assembly 14 is positioned with the bearing 3219 with bearing seats 32 by a stop. The right end face of component 24 is fixed to the support plate 12 with bolts. The transmission disc 31 component 23 in the electromagnetic clutch assembly 14 is axially positioned on the left end face of bearing 3219 with bearing 32 seat by the right end face of bearing 32. The spline component 29 component 22 in the electromagnetic clutch assembly 14 is axially positioned on the left end face of bearing 32 of transmission disc 31 component 23 by its internal right end face. The flange nut 16 is tightened with the auger spline shaft to achieve axial positioning. The plug 40 on the iron core 36 component 24 is connected to the control socket of the whole machine. The chain 17 is installed on the sprocket 13.

[0046] In this embodiment, the grain bin sprocket 13 is connected to the unloading cylinder sprocket 13 via a chain 17. The unloading cylinder sprocket 13 is driven by belt drive and chain drive. The transmission structure here is the same as that of the existing grain bin transmission system, and will not be described in detail here.

[0047] The working principle of the electromagnetic clutch assembly in this embodiment is as follows:

[0048] 1. Power failure state (grain tank auger stops rotating)

[0049] Magnetic field disappears: No current flows through the coil → the magnetic field of the iron core dissipates → the suction plate separates from the transmission plate;

[0050] Mechanical decoupling: The spring plate rebounds, causing the keypad to disengage from the transmission plate → the grain tank sprocket spins freely (power is not transmitted to the auger shaft);

[0051] Load isolation: The unloading auger operates independently to empty the remaining grain in the unloading hopper.

[0052] 2. Power-on state (grain tank auger in operation)

[0053] Magnetic field generation: A strong axial magnetic field is generated when current flows through the plug → wire → coil → iron core;

[0054] Magnetic adsorption: The suction plate is instantly adsorbed to the end face of the transmission plate;

[0055] Torque transmission: The suction plate pulls the spring plate → the suction plate and the transmission plate are rigidly attached;

[0056] Power transmission direction: grain tank sprocket → transmission disc assembly → keyway assembly → auger spline shaft → grain tank auger.

[0057] like Figure 7 As shown, the working principle of the entire harvester unloading transmission system is as follows: When the harvester is unloading grain, the hydraulic unloading main clutch is controlled to press the belt, which drives the unloading cylinder auger to work through belt drive and chain drive (the grain tank auger does not work when the electromagnetic clutch assembly is not energized). The residual grain in the unloading cylinder is discharged. Then the electromagnetic clutch assembly is energized, the grain tank auger works, and the unloading operation is realized and completed. When the electromagnetic clutch assembly is de-energized, the grain tank discharge stops. This cycle is repeated to realize the unloading operation and stop the unloading operation.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A harvester unloading transmission system based on an electromagnetic clutch assembly, characterized in that, The system includes a grain tank auger, with both ends fixed to two auger shafts. The auger shafts are mounted on support plates at both ends via bearings with bearing seats. An electromagnetic clutch assembly is installed on the auger shaft at the drive end of the grain tank auger. The electromagnetic clutch assembly is fixedly connected to a grain tank sprocket. The grain tank sprocket is connected to a grain unloading sprocket via a chain. The grain unloading sprocket is driven by belt drive and chain drive.

2. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 1, characterized in that, The electromagnetic clutch assembly includes a keypad component, a transmission disc component, and an iron core component arranged coaxially; wherein, the iron core component is installed inside the transmission disc component, the transmission disc component is mounted on the auger shaft via bearings, the end face of the transmission disc component is in contact with the end face of the keypad component, and the outer circumferential surface of the transmission disc component is fixedly connected to the grain bin sprocket.

3. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 2, characterized in that, The keypad component includes a fixedly connected suction plate, a protective cover, a spring plate, and a keypad, with the spline holes on the keypad matching the splines on the auger switch.

4. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 2, characterized in that, The transmission disc component includes a transmission disc, a bearing, and a retaining ring. The bearing is concentrically mounted inside the transmission disc and is limited by the retaining ring.

5. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 2, characterized in that, The iron core component includes a coil, an iron core, and a bracket. The coil is installed inside the iron core, the iron core is fixed on the bracket, and the bracket is fixed on a support plate.

6. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 5, characterized in that, The coil is connected to a plug via a wire, and the plug is connected to the control port of the whole machine.

7. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 5, characterized in that, The iron core and the coil are encapsulated and cured into a single structure using resin.

8. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 1, characterized in that, After the electromagnetic clutch assembly is installed on the auger shaft, it is tightened by the flange nut to achieve circumferential positioning.

9. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 1, characterized in that, The bearing with bearing housing is fixed to the support plate by bolts.

10. The harvester unloading transmission system based on an electromagnetic clutch assembly as described in claim 1, characterized in that, When the electromagnetic clutch assembly is energized, the grain tank auger and the unloading cylinder auger work simultaneously; when the electromagnetic clutch assembly is de-energized, the grain tank auger stops working, and the unloading cylinder auger starts working.

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