A feeding device for a forage harvester and the harvester

Abstract

The present invention relates to a feeding device for a forage harvester, which includes a frame. An upper drive motor and a lower drive motor are arranged on one side of the frame as a power input mechanism, and a drive gearbox and a sprocket box are arranged on the other side of the frame as a transmission mechanism. The upper drive motor is in transmission connection with the drive gearbox through a transmission shaft, and the drive gearbox transmits power to a front upper feeding roller and a rear upper feeding roller. The power output end of the lower drive motor is fixedly connected coaxially with a rear lower feeding roller. The rear lower feeding roller is in transmission connection with the sprocket box, and transmits power to a front lower feeding roller through the sprocket box. This device simplifies the mechanical transmission structure of the feeding mechanism of the existing forage harvester. By setting dual-motor drive, the power input end and the transmission mechanism are respectively arranged on both sides of the device, which is convenient for maintenance. And the stepless adjustment of the cutting length can be realized by this method.

Description

Technical Field

[0001] The present invention relates to the field of agricultural machinery devices, in particular to a feeding device for a forage harvester and a harvester. Background Art

[0002] With the continuous development of the livestock industry, more and more cultivated land is reserved for planting silage. The large-scale planting mode determines that mechanized operation is required during harvesting to complete the harvesting operation within the specified time limit; the self-propelled silage harvester is specifically used for harvesting silage, and it generally consists of a cutting table, a feeding mechanism, a chopping mechanism, a throwing mechanism, an engine, a traveling device, etc. Its operation process is mainly as follows: First, the cutting table cuts the crops, and then the feeding mechanism sends the crops into the chopping mechanism. In the chopping mechanism, the crops are chopped by the cutting knives in the mechanism, and then the chopped crops are sent into the receiving truck through the throwing mechanism, that is, the harvesting of silage is completed.

[0003] Currently, most of the feeding mechanisms of silage harvesters adopt mechanical transmission. The transmission between the rollers mainly uses chain transmission, which has a complex structure and is prone to failure, and the transmission power is also lost. Moreover, when a failure occurs, the maintenance of the entire device is very inconvenient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a feeding device for a forage harvester, which simplifies the transmission structure of the feeding device, improves the transmission efficiency, and reduces the failure rate of the feeding device.

[0005] To solve the above technical problem, the present invention is implemented as follows: The feeding device for a forage harvester of the present invention includes a frame. The upper drive motor and the lower drive motor are arranged as a power input mechanism on one side of the frame, and the drive gearbox and the sprocket box are arranged as a transmission mechanism on the other side of the frame; the front upper feeding roller and the front lower feeding roller are horizontally arranged in front of the frame, and a feeding port is formed between them; the rear upper feeding roller and the rear lower feeding roller are horizontally arranged behind the frame, and a material outlet is formed between them; the upper drive motor is in transmission connection with the drive gearbox through a transmission shaft, and the drive gearbox transmits power to the front upper feeding roller and the rear upper feeding roller; the power output end of the lower drive motor is fixedly connected coaxially with the rear lower feeding roller, the rear lower feeding roller is in transmission connection with the sprocket box, and the power is transmitted to the front lower feeding roller through the sprocket box.

[0006] The front upper feeding roller is arranged above the front lower feeding roller. The front lower feeding roller is rotatably connected to the frame with a fixed relative position, and the front upper feeding roller is rotatably connected to the frame with a non-fixed relative position. The front upper feeding roller and the front lower feeding roller rotate relative to each other to feed materials into the feeding port, and the opening width of the feeding port is floating. The rear upper feeding roller is arranged above the rear lower feeding roller. The rear lower feeding roller is rotatably connected to the frame with a fixed relative position, and the rear upper feeding roller is rotatably connected to the frame with a non-fixed relative position. The rear upper feeding roller and the rear lower feeding roller rotate relative to each other to send materials out of the material outlet, and the opening width of the material outlet is floating.

[0007] A floating support arm is arranged on the frame on the same side as the upper driving motor and the lower driving motor. The end of the floating support arm is rotatably connected to the rear end of the frame through the upper feeding roller hinge connection point. The front upper feeding roller is fixed to the floating support arm through the front upper feeding roller shaft arranged at its center and forms a rotational connection. The rear upper feeding roller is fixed to the floating support arm through the rear upper feeding roller shaft arranged at its center and forms a rotational connection. One end of the floating support arm far from the upper feeding roller hinge connection point is connected with a floating tension spring b, and the middle of the floating support arm is connected with a floating tension spring a. The other ends of the floating tension spring b and the floating tension spring a are hung on the frame. The driving gearbox is fixedly connected to the gearbox support arm, and the gearbox support arm is rotatably connected to the rear end of the frame through the upper feeding roller hinge connection point. The front upper feeding roller shaft of the front upper feeding roller and the rear upper feeding roller shaft of the rear upper feeding roller are respectively in transmission connection with the driving gearbox. One end of the driving gearbox far from the upper feeding roller hinge connection point is connected with a floating tension spring b, and the middle of the driving gearbox is connected with a floating tension spring a. The other ends of the floating tension spring b and the floating tension spring a are hung on the frame.

[0008] Rubber support blocks are fixedly connected to the lower sides of the floating support arm near the front upper feeding roller shaft and the rear upper feeding roller shaft. Blocks are connected to the frame at positions corresponding to the rubber support blocks, and the rubber support blocks can be reliably abutted against the blocks to limit the front upper feeding roller and the rear upper feeding roller.

[0009] The upper end of the driving gearbox is hinge-connected with a buffer cylinder, and the other end of the buffer cylinder is hinge-connected to the upper feeding roller hinge connection point.

[0010] The upper drive motor and the lower drive motor are connected to a variable pump through pipelines. The oil circuits of the upper drive motor and the lower drive motor are arranged in series, and their rotation directions are opposite during operation. The flow rate of the variable pump is controlled by a controller. By controlling the flow rate of the variable pump, the rotational speeds of the upper drive motor and the lower drive motor are regulated. The changes in the rotational speeds of the upper drive motor and the lower drive motor can control the changes in the rotational speeds of the front upper feed roller, the rear upper feed roller, the front lower feed roller, and the rear lower feed roller. By changing the rotational speeds of the front upper feed roller, the rear upper feed roller, the front lower feed roller, and the rear lower feed roller, the speed of the fed material can be changed, and the stepless adjustment of the cutting length can be achieved by changing the conveying speed of the material to the chopping mechanism at the rear. An electromagnetic valve is connected in series on the pipelines connecting the upper drive motor, the lower drive motor and the variable pump. The electromagnetic valve is used to change the flow direction of the hydraulic oil entering the upper drive motor and the lower drive motor. For the steering control of the upper drive motor and the lower drive motor, the changes in the rotation directions of the front upper feed roller, the rear upper feed roller, the front lower feed roller, and the rear lower feed roller respectively driven by them can realize the process of feeding or discharging feed.

[0011] Positive effects of the present invention: The feeding device for a forage harvester described in the present invention simplifies the mechanical transmission structure of the feeding mechanism of the existing forage harvester. By setting dual-motor drive, the power input end and the transmission mechanism are respectively arranged on both sides of the device, which is convenient for maintenance, and the stepless adjustment of the cutting length can be achieved by this method. At the same time, during the harvesting process of the forage harvester, the feeding device may be blocked. When the feeding box of the existing forage harvester is blocked, it is necessary to open the feeding box and clean it before continuing to work. In the present invention, the feeding roller can be quickly reversed by dual-motor drive, so as to realize the reverse discharge of the fed feed, simplifying the maintenance process of the harvester. Description of the Drawings

[0012] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0013] Figure 1 is the structural schematic diagram of the present invention;

[0014] Figure 2 is the structural schematic diagram of the present invention;

[0015] Figure 3 is the structural schematic diagram of the present invention;

[0016] Figure 4 is the structural schematic diagram of the present invention;

[0017] Figure 5 is the structural schematic diagram of the present invention.

[0018] In the figure, 1 is a frame, 2 is a front upper feed roller, 3 is a front lower feed roller, 4 is a driving gear box, 5 is a sprocket box, 6 is a buffer cylinder, 7 is a gear box support arm, 8 is a floating tension spring a, 9 is a floating tension spring b, 10 is a transmission shaft, 11 is a floating support arm, 12 is an upper drive motor, 13 is a lower drive motor, 14 is an upper feed roller hinge connection point, 15 is a rubber support block, 16 is a rear upper feed roller shaft, 17 is a front upper feed roller shaft, 18 is a rear upper feed roller, 19 is a rear lower feed roller, and 20 is a floating fulcrum of a buffer cylinder. DETAILED DESCRIPTION

[0019] like Figures 1 to 5 As shown, as a specific embodiment, a feeding device for a forage harvester according to the present invention includes a frame 1, an upper drive motor 12 and a lower drive motor 13 as a power input mechanism are arranged on one side of the frame 1, and a drive gear box 4 and a sprocket box 5 as a transmission mechanism are arranged on the other side of the frame 1.

[0020] The front upper feeding roller 2 and the front lower feeding roller 3 are transversely arranged in front of the frame 1, and a feeding inlet is formed therebetween; the front upper feeding roller 2 is arranged above the front lower feeding roller 3, the front lower feeding roller 3 and the frame 1 form a relatively fixed rotation connection, the front upper feeding roller 2 and the frame 1 form a relatively unfixed rotation connection, the front upper feeding roller 2 and the front lower feeding roller 3 rotate relative to each other to feed the material into the feeding inlet, and the opening width of the feeding inlet floats; the rear upper feeding roller 18 and the rear lower feeding roller 19 are transversely arranged behind the frame 1, and a material outlet is formed therebetween; the rear upper feeding roller 18 is arranged above the rear lower feeding roller 19, the rear lower feeding roller 19 and the frame 1 form a relatively fixed rotation connection, the rear upper feeding roller 18 and the frame 1 form a relatively unfixed rotation connection, the rear upper feeding roller 18 and the rear lower feeding roller 19 rotate relative to each other to feed the material out of the material outlet, and the opening width of the material outlet floats. The upper end of the driving gear box 4 is hinged with a buffer cylinder 6, and the other end of the buffer cylinder 6 is hinged to the upper feed roller hinge connection point 14. The buffer cylinder 6 is used for damping control of the up and down floating process of the front upper feed roller shaft 17 and the rear upper feed roller shaft 16 connected to the driving gear box 4. During the harvesting process, the material passing through the feeding port is constantly changing. By setting the buffer cylinder 6, the floating changes of the front upper feed roller 2 and the rear upper feed roller 18 in a floating state can be smooth.

[0021] The upper driving motor 12 is connected to the driving gear box 4 through the transmission shaft 10, and the driving gear box 4 transmits power to the front upper feeding roller 2 and the rear upper feeding roller 18; the power output end of the lower driving motor 13 is fixedly connected to the rear lower feeding roller 19 coaxially, and the rear lower feeding roller 19 is connected to the sprocket box 5, and the power is transmitted to the front lower feeding roller 3 through the sprocket box 5.

[0022] A floating support arm 11 is arranged on the frame 1 on the same side as the upper driving motor 12 and the lower driving motor 13. The end of the floating support arm 11 is rotatably connected to the rear end of the frame 1 through the upper feeding roller hinge connection point 14; the front upper feeding roller 2 is fixed to the floating support arm 11 through the front upper feeding roller shaft 17 arranged at its center and forms a rotational connection; the rear upper feeding roller 18 is fixed to the floating support arm 11 through the rear upper feeding roller shaft 16 arranged at its center and forms a rotational connection; one end of the floating support arm 11 far from the upper feeding roller hinge connection point 14 is connected with a floating tension spring b9, and the middle of the floating support arm 11 is connected with a floating tension spring a8. The other ends of the floating tension spring b9 and the floating tension spring a8 are hung on the frame 1; the driving gearbox 4 is fixedly connected to the gearbox support arm 7, and the gearbox support arm 7 is rotatably connected to the rear end of the frame 1 through the upper feeding roller hinge connection point 14; the front upper feeding roller shaft 17 of the front upper feeding roller 2 and the rear upper feeding roller shaft 16 of the rear upper feeding roller 18 are respectively in transmission connection with the driving gearbox 4; one end of the driving gearbox 4 far from the upper feeding roller hinge connection point 14 is connected with a floating tension spring b9, and the middle of the driving gearbox 4 is connected with a floating tension spring a8. The other ends of the floating tension spring b9 and the floating tension spring a8 are hung on the frame 1.

[0023] Rubber support blocks 15 are fixedly connected to the lower sides of the floating support arm 11 close to the front upper feeding roller shaft 2 and the rear upper feeding roller shaft 18. Blocks are connected to the frame 1 at positions corresponding to the rubber support blocks 15. The rubber support blocks 15 can be abutted against the blocks to limit the front upper feeding roller 2 and the rear upper feeding roller 18.

[0024] The upper driving motor 12 and the lower driving motor 13 are connected to a variable pump through pipelines. The oil circuits of the upper driving motor 12 and the lower driving motor 13 are arranged in series, and their rotation directions are opposite during operation; the flow rate of the variable pump is controlled by a controller. By controlling the flow rate of the variable pump, the rotation speeds of the upper driving motor 12 and the lower driving motor 13 are regulated. The changes in the rotation speeds of the upper driving motor 12 and the lower driving motor 13 can control the changes in the rotation speeds of the front upper feeding roller 2, the rear upper feeding roller 18, the front lower feeding roller 3, and the rear lower feeding roller 19. By changing the rotation speeds of the front upper feeding roller 2, the rear upper feeding roller 18, the front lower feeding roller 3, and the rear lower feeding roller 19, the speed of the fed material can be changed, and the stepless adjustment of the cutting length can be realized by changing the conveying speed of the material to the chopping mechanism at the rear; solenoid valves are connected in series on the pipelines connecting the upper driving motor 12, the lower driving motor 13 and the variable pump. The solenoid valves are used to change the flow direction of the hydraulic oil entering the upper driving motor 12 and the lower driving motor 13; for the steering control of the upper driving motor 12 and the lower driving motor 13, the changes in the steering of the front upper feeding roller 2, the rear upper feeding roller 18, the front lower feeding roller 3, and the rear lower feeding roller 19 respectively driven by them can realize the process of feeding or discharging feed.

[0025] The working process of the present invention is as follows:

[0026] The feeding device for a forage harvester described in the present invention is used on a silage forage harvester. It is located behind the cutter bar of the forage harvester. After the silage is cut by the cutter bar, it will enter the feeding device, and the forage is conveyed to the chopping device arranged behind it through the feeding device for chopping. The feeding device is controlled by a controller in the cab. The controller controls the flow rate output by the variable pump, thereby realizing the control of the rotational speeds of the upper drive motor and the lower drive motor. The upper drive motor and the lower drive motor are connected in series, thereby realizing synchronous rotation. When it is necessary to adjust the forage cutting length to be shorter, it is necessary to reduce the rotational speeds of the front upper feeding roller, the rear upper feeding roller, the front lower feeding roller, and the rear lower feeding roller. The conveying speed of the material to the rear chopping mechanism will slow down, so the speed at which the material enters the chopping device will also slow down. With the rotational speed of the chopping device remaining unchanged, the number of times of chopping the material will increase, so the material will be cut shorter. When it is necessary to adjust the forage cutting length to be longer, the operation is just the opposite. Since the rotation of the hydraulic drive motor can achieve stepless speed regulation, the adjustment of the cutting length of the forage harvester can also achieve stepless adjustment, making the applicable range of the forage harvester wider.

[0027] The purpose of the above specific embodiment is to clearly and completely describe the technical solution in combination with the drawings, and only illustrate the functional structural principles of a feeding device for a forage harvester related to the present invention by diagrams. Since it is very easy for those skilled in the same technical field to make several modifications on this basis, this specification does not intend to limit the feeding device for a forage harvester described in the present invention to the specific mechanisms and applicable ranges shown or described. Therefore, all corresponding modifications and equivalents that may be utilized belong to the protection scope of the present invention patent. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A feeding device for a forage harvester, characterized in that: It includes a frame. An upper driving motor and a lower driving motor are arranged on one side of the frame as a power input mechanism, and a driving gearbox and a sprocket box are arranged on the other side of the frame as a transmission mechanism. A front upper feeding roller and a front lower feeding roller are horizontally arranged in front of the frame, and a feeding port is formed between them. A rear upper feeding roller and a rear lower feeding roller are horizontally arranged behind the frame, and a material outlet is formed between them. The upper driving motor is in transmission connection with the driving gearbox through a transmission shaft, and the driving gearbox transmits power to the front upper feeding roller and the rear upper feeding roller. The power output end of the lower driving motor is fixedly connected coaxially with the rear lower feeding roller. The rear lower feeding roller is in transmission connection with the sprocket box and transmits power to the front lower feeding roller through the sprocket box. The upper driving motor and the lower driving motor are connected to a variable pump through pipelines. The oil circuits of the upper driving motor and the lower driving motor are arranged in series and rotate in opposite directions during operation. The flow rate of the variable pump is controlled by a controller. By controlling the flow rate of the variable pump, the rotational speeds of the upper driving motor and the lower driving motor are regulated. The changes in the rotational speeds of the upper driving motor and the lower driving motor can control the changes in the rotational speeds of the front upper feeding roller, the rear upper feeding roller, the front lower feeding roller, and the rear lower feeding roller. By changing the rotational speeds of the front upper feeding roller, the rear upper feeding roller, the front lower feeding roller, and the rear lower feeding roller, the speed of the feeding material is changed, and the stepless adjustment of the cutting length can be achieved by changing the conveying speed of the material to the shredding mechanism at the rear. Solenoid valves are connected in series on the pipelines connecting the upper driving motor, the lower driving motor and the variable pump. The solenoid valves are used to change the flow direction of the hydraulic oil entering the upper driving motor and the lower driving motor. The steering control of the upper driving motor and the lower driving motor can change the steering of the front upper feeding roller, the rear upper feeding roller, the front lower feeding roller, and the rear lower feeding roller respectively driven by them, and the process of feeding or discharging feed can be realized.

2. The feeding device for a feed harvester according to claim 1, characterized in that: The front upper feeding roller is arranged above the front lower feeding roller. The front lower feeding roller is rotatably connected to the frame with a fixed relative position, and the front upper feeding roller is rotatably connected to the frame with an unfixed relative position. The front upper feeding roller and the front lower feeding roller rotate relative to each other to feed the material into the feeding port, and the opening width of the feeding port is floating. The rear upper feeding roller is arranged above the rear lower feeding roller. The rear lower feeding roller is rotatably connected to the frame with a fixed relative position, and the rear upper feeding roller is rotatably connected to the frame with an unfixed relative position. The rear upper feeding roller and the rear lower feeding roller rotate relative to each other to send the material out of the material outlet, and the opening width of the material outlet is floating.

3. The feeding device for a feed harvester according to claim 2, characterized in that: A floating support arm is arranged on the same side of the frame as the upper driving motor and the lower driving motor. The end of the floating support arm is rotatably connected to the rear end of the frame through the upper feeding roller hinge connection point. The front upper feeding roller is fixed to the floating support arm through the front upper feeding roller shaft arranged at its center and forms a rotational connection. The rear upper feeding roller is fixed to the floating support arm through the rear upper feeding roller shaft arranged at its center and forms a rotational connection. One end of the floating support arm far from the upper feeding roller hinge connection point is connected with a floating spring b, and the middle part of the floating support arm is connected with a floating spring a. The other ends of the floating spring b and the floating spring a are hooked on the frame. The driving gearbox is fixedly connected with the gearbox support arm, and the gearbox support arm is rotatably connected to the rear end of the frame through the upper feeding roller hinge connection point. The front upper feeding roller shaft of the front upper feeding roller and the rear upper feeding roller shaft of the rear upper feeding roller are respectively in transmission connection with the driving gearbox. One end of the driving gearbox far from the upper feeding roller hinge connection point is connected with a floating spring b, and the middle part of the driving gearbox is connected with a floating spring a. The other ends of the floating spring b and the floating spring a are hooked on the frame.

4. The feeding device for a forage harvester according to claim 3, wherein: Rubber support blocks are fixedly connected to the lower sides of the floating support arm close to the front upper feeding roller shaft and the rear upper feeding roller shaft. Blocks are connected to the corresponding positions on the frame where the rubber support blocks are located, and the rubber support blocks can be abutted against the blocks to limit the front upper feeding roller and the rear upper feeding roller.

5. A feeding device for a feed harvester according to claim 1, characterized in that: A buffer cylinder is hinged to the upper end of the driving gearbox, and the other end of the buffer cylinder is hinged to the upper feeding roller hinge connection point.

6. A feed harvester, characterized in that, It includes a harvester body and the feeding device for a forage harvester according to any one of claims 1-5, and the feeding device for a forage harvester is installed on the harvester body.

Images