Harvester with cutting disc driven by front wheel

Abstract

The invention provides a harvester with a cutting disc driven by a front wheel. The harvester comprises an excavating chain; the first front wheel is arranged on the first side of the excavating chain; the first cutting disc is arranged on the first side of the digging chain and corresponds to the first front wheel; the center shaft of the first front wheel is connected with the center shaft of the first cutting disc through the first transmission device, and when the first front wheel rotates, the first transmission device can transmit power from the first front wheel to the center shaft of the first cutting disc so as to drive the first cutting disc to rotate.

Description

Technical Field

[0001] The present application relates to a harvester, in particular to a harvester with a front-wheel driven disc knife for root crops such as potatoes, tubers and the like. Background Art

[0002] With the growth of the global population and the advancement of agricultural modernization, improving the harvesting efficiency and quality of crops has become an important issue in agricultural production. Among the many crops, root crops such as potatoes and tubers are important food crops, and their harvesting process has a significant impact on improving the overall efficiency of agricultural production. Traditional root crop harvesting mainly relies on manual digging, which is labor-intensive, inefficient, and difficult to avoid damaging the crops, affecting their subsequent storage and sales. To solve this problem, mechanized harvesting equipment came into being, aiming to replace manual labor with automated mechanical operations, improve harvesting efficiency and reduce costs.

[0003] Existing harvesters typically include key steps: excavation, separation, and collection. The harvesting phase involves cutting, digging, or vibrating excavation components to remove crops from the soil. The separation phase uses mechanical screening or wind-driven sifting to separate the crops from the soil, vines, and other components. The collection phase is responsible for collecting the separated crops for subsequent packaging and transportation. While existing harvesters have improved harvesting efficiency to a certain extent, some issues and shortcomings remain, such as the need to separately power the cutting mechanism, which increases energy consumption. Summary of the Invention

[0004] The present application provides a harvester, in particular, a harvester with a front-wheel driven disc cutter, which includes: a digging chain; a first front wheel, arranged on a first side of the digging chain; a first disc cutter, arranged on the first side of the digging chain and corresponding to the first front wheel; a first transmission device, connecting the center axis of the first front wheel with the center axis of the first disc cutter, wherein, when the first front wheel rotates, the first transmission device can transmit power from the first front wheel to the center axis of the first disc cutter, thereby driving the first disc cutter to rotate.

[0005] In another embodiment of the present application, the front-wheel driven disc cutter harvester further includes: a second front wheel, arranged on the second side of the digging chain, the second side being opposite to the first side; a second disc cutter, arranged on the second side of the digging chain and corresponding to the second front wheel; a second transmission device, connecting the center axis of the second front wheel with the center axis of the second disc cutter, wherein when the second front wheel rotates, the second transmission device can transmit power from the second front wheel to the center axis of the second disc cutter, thereby driving the second disc cutter to rotate.

[0006] In another embodiment of the present application, the distance between the center axis of the first front wheel and the center axis of the first disc cutter is variable, and the difference between the maximum distance and the minimum distance between the center axis of the first front wheel and the center axis of the first disc cutter is less than or equal to a preset difference.

[0007] In another embodiment of the present application, the front-wheel driven disc cutter harvester further includes: a first fulcrum, which is arranged on the harvester body and can move relative to the harvester body, and the first fulcrum is located on the first side of the harvester; a second fulcrum, which is arranged on the harvester body, and the second fulcrum is located on the first side of the harvester; and a first support arm, the first end of the first support arm is connected to the central axis of the first disc cutter, and the central axis of the first disc cutter can rotate around the second end of the first support arm; wherein, along the length direction of the harvester, the first fulcrum and the second fulcrum are both located between the first disc cutter and the first front wheel, and the first transmission device is also connected to the first fulcrum and the second fulcrum, and when the central axis of the first disc cutter rotates around the second end of the first support arm, the first fulcrum can move relative to the harvester body.

[0008] In another embodiment of the present application, the front-wheel drive disc blade harvester further includes: a first connecting component, the first end of the first connecting component is connected to the harvester body, and the second end of the first connecting component is rotatably connected to the second end of the first support arm.

[0009] In another embodiment of the present application, a front-wheel driven disc cutter harvester is provided, wherein the first transmission device includes a transmission chain or a transmission belt.

[0010] In another embodiment of the present application, the front wheel drives the disc cutter harvester, wherein the transmission chain or the transmission belt is connected to the center axis of the first front wheel, the center axis of the first disc cutter, the first fulcrum, and the second fulcrum in a counterclockwise direction.

[0011] In another embodiment of the present application, the center-to-center distance between the center axis of the first front wheel and the center axis of the first disc cutter is a constant value.

[0012] In another embodiment of the present application, the central axis of the first front wheel is connected to the harvester body through a main suspension arm; and the central axis of the first disc knife is connected to the central axis of the first front wheel through a second support arm.

[0013] In another embodiment of the present application, a front-wheel driven disc cutter harvester is provided, wherein, under the action of the second support arm, the center distance between the center axis of the first front wheel and the center axis of the first disc cutter remains unchanged.

[0014] In another embodiment of the present application, the front-wheel drive disc blade harvester further includes: a second connecting component, the first end of the second connecting component is connected to the harvester body, and the second end of the second connecting component limits the second support arm in the first direction.

[0015] In another embodiment of the present application, the front-wheel drive disc cutter harvester further includes: a slave suspension arm, one end of which is suspended from the harvester body, and the other end is hinged to the central axis of the first disc cutter.

[0016] In another embodiment of the present application, the master suspension arm includes an outer sliding sleeve, an inner sliding rod and an oil cylinder, and the slave suspension arm includes a sliding rod and a spring.

[0017] According to the harvester with a front-wheel driven disc cutter of the present application, the transmission chain is driven by the rotation of the front wheel, and the disc cutter is further driven to rotate by the transmission chain, thereby using the front wheel as the power source of the disc cutter. There is no need to provide an additional power source for the disc cutter, and the positional relationship and connection structure between the disc cutter and the front wheel of the present application are simple and easy to implement.

[0018] The above description is only an overview of the technical solution of this application. In order to more clearly understand the technical means of this application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of this application more obvious and easy to understand, the specific implementation methods of this application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present application and should not be regarded as limiting the scope of the present application.

[0020] Figure 1-Figure 2 The overall schematic diagram of the front-wheel drive disc cutter harvester provided by the present application is shown; Figure 3A-3B A schematic diagram showing the first front wheel 11, the first cutting disc 12 and the first transmission 13 connected to the main body 10 in a first manner; and Figures 4A-4C Schematic diagram showing the first front wheel 11, the first cutting disc 12 and the first transmission device 13 connected to the main body 10 in a second manner.

[0021] 1. Harvester; 1A, digging chain; 10. Harvester body; 11. First front wheel; 12. First cutting disc; 13. First transmission device; 141. Main suspension arm; 151. Slave suspension arm; 16. First connecting assembly; 17. First support arm; 181. First fulcrum; 182. Second fulcrum; 191. Second connecting assembly; 192. Second support arm; 21. Second front wheel; 22. Second cutting disc; 23. Second transmission device. DETAILED DESCRIPTION

[0022] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0023] To facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the related technologies of the embodiments of the present application. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application.

[0024] Reference Attachment Figures 1 to 2 The present application provides a harvester 1 with a front-wheel drive disc cutter. The harvester 1 can be used to harvest crops such as potatoes and sweet potatoes in the field. The harvester 1 may include a harvester body 10, a power unit, and a digging chain, etc. The digging chain includes at least one or more of various devices such as a digging device, a conveying device, a separation device, and a cleaning device. The various devices on the digging chain can realize operations such as digging, conveying, and separating harvested objects such as potatoes and sweet potatoes from soil and / or rhizomes. The harvester body 10 includes a main frame for installing and supporting the various devices of the harvester with a front-wheel drive disc cutter. The power unit, cleaning device, and digging device, conveying device, separation device, etc. in the digging chain of the harvester 1 can be selectively set according to actual needs, and are not further limited here, as long as the principles disclosed in the present application can be realized.

[0025] In one embodiment of the present application, the front-wheel drive disc cutter harvester further includes: a digging chain 1A; a first front wheel 11, disposed on a first side of the digging chain 1A; a first disc cutter 12, disposed on the first side of the digging chain 1A and corresponding to the first front wheel 11; and a first transmission device 13, connecting the central axis of the first front wheel 11 with the central axis of the first disc cutter 12, wherein when the first front wheel 11 rotates, the first transmission device 13 can transmit power from the first front wheel 11 to the central axis of the first disc cutter 12, thereby driving the first disc cutter 12 to rotate. The front-wheel drive disc cutter harvester of the present application will be described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 As shown in the figure, the harvester 1 with a front-wheel driven disc cutter includes a first front wheel 11, a first disc cutter 12 and a first transmission device 13. The first front wheel 11 is arranged on the first side of the digging chain 1A of the harvester 1 with a front-wheel driven disc cutter. Usually, the first front wheel 11 does not rotate actively, but is passively rotated due to the forward movement of the harvester 1. In other words, the first front wheel 11 is usually not the driving wheel of the harvester 1. In another embodiment, the first front wheel 11 can serve as the driving wheel of the harvester 1. In other words, the first front wheel 11 can be connected to a driving device such as an internal combustion engine or an electric motor of the harvester 1. Regardless of whether the first front wheel 11 serves as a driving wheel, the first front wheel 11 can transmit power to the first disc cutter 12 through the first transmission device 13 when rotating, thereby realizing digging and / or cutting actions.

[0027] The first side may be the left side or the right side of the forward direction of the harvester 1. Figure 1 As shown, the first front wheel 11 is located on the left side of the forward direction of the harvester 1.

[0028] In one embodiment of the present application, the first disc cutter 12 is arranged on the first side of the front-wheel drive disc cutter harvester 1 and corresponds to the first front wheel 11. Specifically, the first disc cutter 12 can also be arranged on the first side of the digging chain 1A of the front-wheel drive disc cutter harvester 1. The cutting force generated by the rotation of the first disc cutter 12 can quickly and efficiently dig the soil and cut the roots and stems of various crops, thereby realizing the tillage of the soil and completing the cutting operations of roots, stems, weeds, etc., providing a basis for subsequent excavation, separation and collection, while preventing stems and weeds on both sides of the machine from being entangled and blocked. In practice, the design of the first disc cutter 12 usually takes into account the needs of different crops, and the shape and material of the blade can be optimized according to different crop types and the conditions of cultivated soil to improve cutting efficiency and reduce losses.

[0029] It will be appreciated that in the present application, the first cutting disc 12 can effectively cut roots, stems, and weeds in crop ridges. Furthermore, the cutting discs can be inserted into the soil at an adjustable depth based on the type of crop, controlling the digging depth while simultaneously tilling the soil and cutting off any remaining plant debris. The first cutting disc 12 can be mounted at the front end of the harvester 1, for example, near the first front wheel 11. Furthermore, the blades of the first cutting disc 12 can be designed in various shapes, such as disc-shaped, approximately disc-shaped, or spiral-shaped, depending on the cutting and / or digging requirements. Furthermore, the blades of the cutting discs do not necessarily need to be perpendicular to the soil surface. For example, the cutting discs on either side of the harvester can be tilted outward at a certain angle to push the excavated soil (typically excluding crops) outward. Furthermore, the cutting discs can be designed as replaceable components, allowing for easy replacement after wear to maintain performance.

[0030] In one embodiment of the present application, the first transmission device 13 connects the central axis of the first front wheel 11 with the central axis of the first disc cutter 12, wherein when the first front wheel 11 rotates, the first transmission device 13 can transmit power from the first front wheel 11 to the central axis of the first disc cutter 12, thereby driving the first disc cutter 12 to rotate.

[0031] Those skilled in the art will appreciate that the first transmission device 13 may comprise a transmission chain, transmission belt, transmission shaft, or sprocket, so long as the technical principles of the present application are implemented. The design and tension of the first transmission device 13 must be reasonable to ensure that the first disc cutter 12 can rotate smoothly while the first front wheel 11 rotates, thereby performing a smooth cutting action and avoiding the impact of insufficient power or excessive relaxation on operating efficiency. Furthermore, the first transmission device 13 must be made of wear-resistant materials to maintain durability under high loads and high speeds, reducing the frequency of failures and maintenance.

[0032] The first front wheel 11 and the first transmission device 13 can be connected using a connection method commonly used in the art. For example, the central axis of the first front wheel 11 is connected to the first transmission device 13 via a connector. For example, the connector can include a first sprocket, and the first transmission device can include a transmission chain. The teeth on the first sprocket mesh with the chain teeth of the transmission chain to ensure efficient power transmission. The connector can also include a first pulley, and the first transmission device 13 can include a transmission belt. The first pulley is compatible with the transmission belt and can drive the transmission belt to ensure efficient power transmission.

[0033] For example, the central axis of the first disc cutter 12 can also be connected to the first transmission device 13 via a structure such as a sprocket or a pulley. In the case where the first transmission device 13 includes a transmission chain, the first disc cutter 12 can be provided with a second sprocket that rotates synchronously, and the chain teeth of the transmission chain can also mesh with the teeth of the second sprocket to ensure that the power transmitted from the first front wheel 11 can effectively drive the first disc cutter 12 to rotate. In the case where the first transmission device 13 includes a transmission belt, the first disc cutter 12 can be provided with a second pulley that rotates synchronously, and the second pulley is adapted to the transmission belt, and the transmission belt can drive the second pulley to rotate, thereby driving the first disc cutter 12 to rotate. In addition, in one embodiment, the central axis of the first disc cutter 12 can usually be fixed to the sprocket by bolts or clamps to ensure that it will not loosen during rotation, while facilitating the replacement of the blade.

[0034] It should be noted that the above descriptions of sprockets and transmission chains, pulleys and transmission belts, etc. are all exemplary, and are examples of the connection methods between the first disc cutter 12, the first transmission device 13 and the first front wheel 11, and do not constitute a limitation on the scope of protection of this application. Those skilled in the art can choose the connection method between the above-mentioned devices as long as the principles of this application can be implemented.

[0035] In one embodiment of the present application, the front-wheel drive disc cutter harvester 1 may further include a second front wheel 21, a second disc cutter 22, and a second transmission device 23. The second front wheel 21 is disposed on a second side of the digging chain 1A of the front-wheel drive disc cutter harvester, the second side being opposite the first side; the second disc cutter 22 is disposed on the second side of the front-wheel drive disc cutter harvester and corresponds to the second front wheel 21; and the second transmission device 23 connects the central axis of the second front wheel 21 to the central axis of the second disc cutter 22. When the second front wheel 21 rotates, the second transmission device 23 can transmit power from the second front wheel 21 to the central axis of the second disc cutter 22, thereby driving the second disc cutter 22 to rotate. The second disc cutter 22 may also be disposed on the second side of the digging chain 1A of the harvester 1. In this embodiment, when the harvester 1 with front-wheel driven disc cutters moves forward, the front wheels on both sides can respectively drive the corresponding disc cutters to rotate, thereby improving the efficiency of soil excavation and root cutting, that is, the left front wheel drives the left disc cutter to rotate, and the right front wheel drives the right disc cutter to rotate.

[0036] The composition, connection relationship and other elements of the second front wheel 21, the second disc cutter 22 and the second transmission device 23 are the same or similar to the first front wheel 11, the first disc cutter 12 and the first transmission device 13 described above, and will not be repeated here. The second side is the other side corresponding to the first side described above. For example, if the first side is the left side of the forward direction of the harvester 1, then the second side is the right side of the forward direction of the harvester 1. Accordingly, the first front wheel 11 and the second front wheel 21 are opposite to each other and are respectively arranged on the left and right sides of the forward direction of the harvester 1, and the first disc cutter 12 and the second disc cutter 22 are respectively arranged on the left and right sides of the forward direction of the harvester 1. It can be understood that the left and right sides of the forward direction of the harvester are also the left and right sides of the digging chain 1A (from the perspective of the forward direction of the harvester).

[0037] In one embodiment of the present application, the distance between the first front wheel 11 and the second front wheel 21 is adapted to the width of the crop ridge, and the distance between the first disc knife 12 and the second disc knife 22 is the same or substantially the same as the width of the crop ridge.

[0038] It will be appreciated that, in addition to the first and second cutting discs 12, 22 located on the first and second sides, at least one cutting disc may be positioned between the first and second cutting discs 12, 22, to improve soil excavation and root / weed cutting efficiency. Furthermore, at least one cutting disc (e.g., a third, fourth, and / or fifth cutting disc) may be positioned in the middle of the harvester 1. For example, two cutting discs may be positioned in the middle. Furthermore, a third cutting disc may be positioned between the first and second cutting discs 12, 22, and / or a fourth cutting disc may be positioned between the first and third cutting discs positioned midway along the digging chain 1A, and / or a fifth cutting disc may be positioned between the second and third cutting discs positioned midway along the digging chain 1A, and / or a digging device may be positioned rearward of each of the aforementioned cutting discs (e.g., rearward relative to the forward direction of the harvester 1). The digging device is configured to dig up the crop and soil en masse. For example, the digging device may be a digging shovel or a combination of at least two digging shovels, each of which may be U-shaped, V-shaped, or similar. For another example, the digging device may be height-adjustable based on the depth of the crop underground to avoid damaging the crop or missing deeply buried crops during digging. In one embodiment, the first and second cutting discs 12, 22, and at least one of the cutting discs penetrate the soil to a depth substantially equal to the depth of the crop ridge.

[0039] In another embodiment of the present application, the harvester 1 includes a second front wheel 21, a second cutting disc 22, and a second transmission device 23. Furthermore, the central axis of the first cutting disc 12 and the central axis of the second cutting disc 22 are shared. In other words, the first cutting disc 12 and the second cutting disc 22 are coaxial. For example, the central axis of the first cutting disc 12 is connected to and serves as the central axis of the second cutting disc 22. When at least one of the first front wheel 11 and the second front wheel 21 rotates, the drive chain or drive belt corresponding to the rotating front wheel can transmit power from the front wheel to the first and second cutting discs 12, 22, thereby driving the first and second cutting discs 12, 22 to rotate. In this embodiment, since the two disc cutters are arranged on the same central axis, the adaptability of the digging process can be further improved. For example, when the front wheel on one side encounters an obstacle and cannot be driven, or when the front wheel on one side is off the ground or suspended in the air due to uneven ground, the front wheel on the other side can simultaneously drive the disc cutters on both sides to rotate, thereby maintaining the effect of digging soil and cutting roots / weeds.

[0040] In another embodiment of the present application, the harvester 1 includes a second front wheel 21, a second disc cutter 22 and a second transmission device 23, and further, the central axis of the first disc cutter 12 and the central axis of the second disc cutter 22 are two different central axes, so that the first front wheel 11 drives the first disc cutter 12 to rotate through the first transmission device 13, and the second front wheel 21 drives the second disc cutter 22 to rotate through the second transmission device 23.

[0041] In one embodiment of the present application, the center-to-center distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 is a constant value.

[0042] When there is a bump on the road or an obstacle is encountered, the first front wheel 11 or the first disc cutter 12 is lifted up, and the axial center distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 is a constant value. At this time, the first disc cutter 12 corresponding to the lifted first front wheel 11 or the first front wheel 11 corresponding to the lifted first disc cutter 12 can move with the first front wheel 11 or the first disc cutter 12 to reduce the relative displacement between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12, thereby reducing the occurrence of the first transmission device 13 breaking caused by the increase in the axial center distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12.

[0043] For example, Figure 3A - Figure 3BAs shown in , the first front wheel 11, the first disc cutter 12 and the first transmission device 13 located on the first side of the digging chain are connected to the harvester body 10 in a first manner. Specifically, the three are directly or indirectly connected to the main frame of the harvester body 10. Among them, the central axis of the first front wheel 11 is connected to the harvester body 10 through the main suspension arm 141. Specifically, the central axis of the first disc cutter 12 is connected to the central axis of the first front wheel 11 through the second support arm 192, the central axis of the first disc cutter 12 is rotatably connected to the second support arm 192, and the central axis of the first disc cutter 12 is connected to the central axis of the first front wheel 11 through the first transmission device 13. Therefore, because the main frame moves forward under the drive of the power device of the harvester 1, and the first front wheel 11 and the first disc knife 12 are relatively fixed to the main frame, they can receive the driving force transmitted through the main frame and move forward. Accordingly, when the first front wheel 11 is driven to rotate, the rotation of the first front wheel 11 drives the first disc knife 12 to rotate through the first transmission device 13 (such as a transmission chain or a transmission belt, etc.).

[0044] For example, the central axis of the first front wheel 11 is connected to the harvester body 10 through the main suspension arm 141, that is, one end of the main suspension arm 141 is connected to the harvester body 10 of the front wheel drive disc cutter, and the other end is connected to the central axis of the first front wheel 11. Exemplarily, the main suspension arm 141 may include an outer sleeve, an inner slide bar and an oil cylinder. The outer sleeve may be connected to the harvester body 10, the inner slide bar may be connected to the central axis of the first front wheel 11, and the two ends of the oil cylinder may be connected to the inner slide bar and the outer sleeve, respectively. The inner slide bar and the outer sleeve can slide relative to each other so that the first front wheel 11 can move up and down relative to the harvester body 10. The oil cylinder can provide mutually diverging forces to the inner slide bar and the outer sleeve, respectively, so that the first front wheel 11 can reset after moving toward the harvester body 10, thereby reducing the occurrence of the first front wheel 11 being suspended in the air and improving the stability and reliability of the harvester.

[0045] Illustratively, the harvester further includes a secondary suspension arm 151. One end of the secondary suspension arm 151 is connected to the harvester body 10, and the other end of the secondary suspension arm 151 is connected to the central axis of the first disc cutter 12. Optionally, one end of the secondary suspension arm 151 is suspended from the harvester body 10, and the other end is hinged to the central axis of the first disc cutter 12. For example, the secondary suspension arm 151 may include a sliding rod and a spring.

[0046] For example, the sliding rod may include a first sliding sub-rod and a second sliding sub-rod, the first sliding sub-rod and the second sliding sub-rod being connected, and the first sliding sub-rod and the second sliding sub-rod being able to slide with each other. The first sliding sub-rod is connected to the harvester body 10, and the second sliding sub-rod is hinged to the central axis of the first disc knife 12, so that the first disc knife 12 can move up and down relative to the harvester body 10. The spring is arranged on the outside of at least part of the first sliding sub-rod and the second sliding sub-rod, and the two ends of the spring are respectively connected to the first sliding sub-rod and the second sliding sub-rod. The spring can provide mutually diverging forces to the first sliding sub-rod and the second sliding sub-rod, so that the first disc knife 12 can reset after moving toward the harvester body 10, thereby reducing the occurrence of the first disc knife 12 being suspended in the air and improving the stability and reliability of the harvester 1.

[0047] Due to the setting of the main suspension arm 141 and the slave suspension arm 151, on the one hand, when the harvester 1 is moving forward, especially when encountering uneven ground, the main suspension arm 141 and the slave suspension arm 151 can provide a certain buffer for the front wheel and the disc knife respectively; on the other hand, the main suspension arm 141 and the slave suspension arm 151 can also limit and fix the distance and position of the front wheel and the disc knife relative to the harvester body 10.

[0048] It will be understood by those skilled in the art that the specific structures of the main suspension arm 141 and the slave suspension arm 151 described above can be selected and set according to actual needs, as long as the technical principles of the present application can be implemented.

[0049] In one embodiment of the present application, the central axis of the first front wheel 11 and the central axis of the first disc cutter 12 are driven and connected by a first transmission device 13, and can also be connected by a second support arm 192. The first transmission device 13 can transmit the rotational force of the central axis of the first front wheel 11 to the central axis of the first disc cutter 12, so that the first disc cutter 12 rotates synchronously with the first front wheel 11, and the second support arm 192 can limit the central axis of the first front wheel 11 and the central axis of the first disc cutter 12.

[0050] When the first front wheel 11 rotates, the center-to-center distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 remains unchanged. Specifically, under the action of the second support arm 192, the center-to-center distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 remains unchanged. In particular, when the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 are both connected to the harvester body 10, due to the supporting effect of the second support arm 192, the center-to-center distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 remains unchanged.

[0051] In another embodiment of the present application, the harvester 1 with a front-wheel drive disc cutter further includes a second connecting assembly 191, a first end of which is connected to the harvester body 10, and a second end of the second connecting assembly 191 limits the second support arm 192 in a first direction. The first direction can be parallel to the axial direction of the central axis of the first disc cutter 12, that is, the first direction can be the left-right direction of the harvester 1, and the second connecting assembly 191 limits the second support arm 192 in the first direction, that is, in the left-right direction of the harvester 1.

[0052] The second connecting assembly 191 can define the relative position between the first cutting disc 12 and the harvester body 10, thereby ensuring that the positional relationship between the first cutting disc 12 and the harvester body 10 is maintained when the harvester 1 moves forward, thereby preventing the first cutting disc 12 from falling off or shifting. For example, the second connecting assembly 191 can be L-shaped as a whole, thereby forming a triangle shape with the secondary suspension arm 151.

[0053] Exemplarily, the second arm 192 is connected to the central axis of the first cutting disc 12 and maintains a constant center-to-center distance between the central axis of the first cutting disc 12 and the central axis of the first front wheel 11. For example, when the road surface is bumpy or encounters an obstacle, the first cutting disc 12 is lifted, causing the slave suspension arm 151 to retract. At this point, the second arm 192 also moves, driving the central axis of the first front wheel 11 and the central axis of the first cutting disc 12 to move synchronously. Subsequently, when the first cutting disc 12 reaches flat ground or a sunken area, the elastic force of the slave suspension arm 151 causes it to gradually return to its original position or extend. At this point, the second arm 192 and the first front wheel 11 also move accordingly.

[0054] Due to the presence and function of the secondary suspension arm 151, the height variation of the center axis of the first cutting disc 12 relative to the ground is limited to a certain height range. Accordingly, the height variation of the second support arm 192 and the first front wheel 11 relative to the ground is also limited to a certain height range, thus providing a certain limiting effect. This reduces the occurrence of changes in the axle center distance (i.e., the axle center distance between the center axis of the first cutting disc 12 and the center axis of the first front wheel 11) caused by excessive movement of the first cutting disc 12 or the first front wheel 11 within the height range, thereby improving the stability and reliability of the harvester 1. Therefore, the second connecting assembly 191 and the secondary suspension arm 151 provide corresponding buffering, reducing damage to the first cutting disc 12 and the first transmission device 13 when encountering uneven ground or obstacles.

[0055] The same or similar to the above description, when a second front wheel 21, a second disc knife 22 and a second transmission device 23 are provided on the second side of the harvester 1, the second front wheel 21 and the second disc knife 22 can also be connected to the harvester body 10 in the manner described above, which will not be repeated here.

[0056] In another embodiment of the present application, the distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 is variable, and the difference between the maximum distance and the minimum distance between the center axis of the first front wheel 11 and the center axis of the first disc cutter 12 is less than or equal to a preset difference.

[0057] As described above, when a bump or obstacle appears on the road surface, the first cutting disc 12 is lifted, causing the center-to-center distance between the center axis of the first cutting disc 12 and the center axis of the first front wheel 11 to change. In this embodiment, the distance between the center axis of the first cutting disc 12 and the center axis of the first front wheel 11 changes by less than or equal to a predetermined difference. This allows the center-to-center distance between the center axis of the first cutting disc 12 and the center axis of the first front wheel 11 to vary, thereby improving the first cutting disc 12's ability to adapt to different terrains.

[0058] It can be understood that the preset difference can be characterized as the maximum deformation capacity between the first front wheel 11 and the first disc knife 12 when the harvester 1 is working normally. The preset difference can be any value between 0.6 meters and 0.1 meters. The preset difference can be, for example, 0.6 meters, 0.5 meters, 0.4 meters, 0.3 meters, 0.2 meters or 0.1 meters. It should be noted that the above description of the preset difference is only exemplary. The specific value of the preset difference can be set according to the experience of those skilled in the art, or it can be set according to a limited number of experiments based on the actual application scenario of the harvester, or it can be set according to the specific structure of the harvester. As long as the technical principles of this application can be realized, no specific limitation is made here.

[0059] like Figures 4A-4CAs shown in FIG, the first front wheel 11, first cutting disc 12, and first transmission 13, located on the first side of the digging chain 1A, are connected to the harvester body 10 via a second method. Specifically, each of the three is directly or indirectly connected to the main frame of the harvester body 10. In the second method, the harvester 1 further includes a first fulcrum 181, a second fulcrum 182, and a first support arm 17. The first fulcrum 181 is provided on the harvester body 10 and is movable relative to the harvester body 10 and located on the first side of the harvester 1. The second fulcrum 182 is provided on the harvester body 10 and is located on the first side of the harvester 1. The first end of the first support arm 17 is connected to the central axis of the first cutting disc 12, and the central axis of the first cutting disc 12 is rotatable about the second end of the first support arm 17. Along the length of the harvester 1, the first fulcrum 181 and the second fulcrum 182 are both located between the first cutting disc 12 and the first front wheel 11. The first transmission device 13 is also connected to the first fulcrum 181 and the second fulcrum 182. When the central axis of the first disc cutter 12 rotates around the second end of the first support arm 17, the first fulcrum 18 can move relative to the harvester body 10. The longitudinal direction of the harvester 1 can be the front-to-back direction of the harvester 1.

[0060] The first end of the first support arm 17 is connected to the central axis of the first cutting disc 12. The central axis of the first cutting disc 12 and the first end of the first support arm 17 are capable of rotating about the second end of the first support arm 17. When the height of the first cutting disc 12 relative to the ground changes, the first cutting disc 12 rotates about the second end of the first support arm 17. The first support arm 17 is capable of limiting the change in height of the first cutting disc 12 to a set range. Specifically, the difference between the maximum and minimum distances between the central axis of the first front wheel 11 and the central axis of the first cutting disc 12 is less than or equal to a preset difference. Therefore, the change in height of the central axis of the first cutting disc 12 relative to the ground is limited (correspondingly, the range of movement of the central axis of the first cutting disc 12 is limited), thereby reducing the possibility of fracture of the first transmission device 13 due to excessive stretching.

[0061] The first transmission device 13 is connected to the central axis of the first front wheel 11, the central axis of the first disc cutter 12, the first fulcrum 181, and the second fulcrum 182 in a counterclockwise direction.

[0062] The first fulcrum 181 can move relative to the harvester body 10, for example, Figure 4A and Figure 4BAs shown, the inner side of the first transmission device 13 is connected to the first fulcrum 181, and then the outer side of the first transmission device 13 is connected to the second fulcrum 182. When the center-to-center distance between the first cutting disc 12 and the first front wheel 11 increases, the first fulcrum 181 can move downward under the drive of the first transmission device 13 to reduce the distance between the first fulcrum 181 and the line connecting the central axes of the first front wheel 11 and the first cutting disc 12, thereby releasing the first transmission device 13 and increasing the center-to-center distance between the central axes of the first front wheel 11 and the first cutting disc 12, thereby reducing the risk of the first transmission device 13 breaking when the center-to-center distance increases.

[0063] When the axial center distance between the first disc cutter 12 and the first front wheel 11 decreases, the first transmission device 13 relaxes and releases the pressure applied to the first fulcrum 181, and the first fulcrum 181 can reset and move upward, thereby maintaining the tension of the first transmission device 13, so as to maintain the power transmission of the first front wheel 11 to the first disc cutter 12.

[0064] When the central axis of the first disc cutter 12 rotates around the second end of the first support arm 17 as the ground rises and falls, the first fulcrum 181 will change accordingly to adapt to the tension requirements of the first transmission device 13. On the one hand, it can keep the first transmission device 13 in a taut state, thereby maintaining the power transmission from the first front wheel 11 to the first disc cutter 12. On the other hand, it can also increase the center-to-center distance between the central axis of the first disc cutter 12 and the central axis of the first front wheel 11, and appropriately increase the length of the transmission chain or transmission belt at the lower edge of the first transmission device 13 (that is, the length of the transmission chain or transmission belt directly connected between the central axis of the first disc cutter 12 and the central axis of the first front wheel 11, rather than the length of the transmission chain or transmission belt connected through the first fulcrum 181 and the second fulcrum 182), thereby ensuring that the first transmission device 13 does not break.

[0065] Illustratively, when the first transmission device 13 includes a transmission chain, the first fulcrum 181 may include a third sprocket, and the second fulcrum 182 may include a fourth sprocket, and both the third sprocket and the fourth sprocket can engage with the transmission chain to achieve power transmission.

[0066] When the first transmission device 13 includes a transmission belt, the first fulcrum 181 may include a third pulley, and the second fulcrum 182 may include a fourth pulley, and both the third pulley and the fourth pulley can be adapted to the transmission belt to achieve power transmission.

[0067] It is understandable that the above description of the location and structure of the first fulcrum 181 and the second fulcrum 182 is merely exemplary, and is not specifically limited here as long as the principle of the present application can be implemented.

[0068] In the embodiment of the second mode described in the present application, the first front wheel 11 and the first disc cutter 12 can be connected to the harvester body 10 through the main suspension arm 141 and the slave suspension arm 151, respectively. Specifically, one end of the main suspension arm 141 is connected to the harvester body 10, and the other end of the main suspension arm 141 is connected to the central axis of the first front wheel 11. One end of the slave suspension arm 151 is connected to the harvester body 10, and the other end of the slave suspension arm 151 is connected to the central axis of the first disc cutter 12. Optionally, one end of the slave suspension arm 151 is suspended from the harvester body 10, and the other end is hinged to the central axis of the first disc cutter 12. The specific structure of the main suspension arm 141 and the slave suspension arm 151 can be the same as or similar to the structure of the main suspension arm and the slave suspension arm in the embodiment of the first mode, and will not be repeated here.

[0069] In addition, in the second embodiment, the harvester 1 may also include a first connecting assembly 16, such as Figure 4C As shown, the first end of the first connecting assembly 16 is connected to the harvester body 10, and the second end of the first connecting assembly 16 is rotatably connected to the second end of the first support arm 17. The first connecting assembly 16 provides support and limitation for the first support arm 17.

[0070] like Figures 4A to 4C As shown, when the road surface has a bump or encounters an obstacle, the first cutting disc 12 is lifted, causing the slave arm 151 to retract. At this point, the first end of the first arm 17 and the central axis of the first cutting disc 12 rotate counterclockwise around the second end of the first arm 17. When the first cutting disc 12 reaches flat ground or a sunken area, the elastic force of the slave arm 151 causes the central axis of the first cutting disc 12 to gradually return to its original position or move toward the ground. At this point, the first end of the first arm 17 and the central axis of the first cutting disc 12 rotate clockwise around the second end of the first arm 17. Obviously, since the central axis of the first cutting disc 12 can rotate around the second end of the first arm 17, the distance between the central axis of the first cutting disc 12 and the central axis of the first front wheel 11 changes. At this point, the first fulcrum 181 is further provided to coordinate the movement of the central axis of the first cutting disc 12 and the slave arm 151.

[0071] Similarly, when a second front wheel 21, a second disc knife 22 and a second transmission device 23 are provided on the second side of the digging chain of the harvester 1, they can also be connected to the harvester body 10 in a similar second manner as described above, which will not be repeated here.

[0072] According to the harvester with a front-wheel driven disc cutter of the present application, the rotation of the front wheel drives the transmission chain or transmission belt to move, and the transmission chain or transmission belt further drives the disc cutter to rotate, thereby using the front wheel as the power source of the disc cutter, without the need to provide an additional power source for the disc cutter, and the positional relationship and connection structure between the disc cutter and the front wheel of the present application are simple and easy to implement.

[0073] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0075] The above is merely an exemplary embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope described in this application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A front-wheel drive disc harvester comprising: mining chain; a first front wheel disposed on a first side of the digging chain; a first disc cutter, disposed on the first side of the digging chain and corresponding to the first front wheel; A first transmission device connects the central axis of the first front wheel with the central axis of the first disc cutter, wherein when the first front wheel rotates, the first transmission device can transmit power from the first front wheel to the central axis of the first disc cutter, thereby driving the first disc cutter to rotate.

2. The front-wheel drive disc cutter harvester according to claim 1, further comprising: a second front wheel disposed on a second side of the digging chain, the second side being opposite to the first side; a second disc cutter, disposed on the second side of the digging chain and corresponding to the second front wheel; A second transmission device connects the central axis of the second front wheel with the central axis of the second disc cutter, wherein when the second front wheel rotates, the second transmission device can transmit power from the second front wheel to the central axis of the second disc cutter, thereby driving the second disc cutter to rotate.

3. The front-wheel drive disc cutter harvester according to claim 1 or 2, wherein: The distance between the center axis of the first front wheel and the center axis of the first disc cutter is variable, and the difference between the maximum distance and the minimum distance between the center axis of the first front wheel and the center axis of the first disc cutter is less than or equal to a preset difference.

4. The front-wheel drive disc cutter harvester according to claim 3, further comprising: a first fulcrum, disposed on the harvester body and movable relative to the harvester body, the first fulcrum being located on a first side of the harvester; a second fulcrum, disposed on the harvester body, the second fulcrum being located on a first side of the harvester; and a first support arm, wherein a first end of the first support arm is connected to the central axis of the first disc cutter, and the central axis of the first disc cutter is capable of rotating around the second end of the first support arm; Among them, along the length direction of the harvester, the first fulcrum and the second fulcrum are both located between the first disc cutter and the first front wheel, and the first transmission device is also connected to the first fulcrum and the second fulcrum. When the central axis of the first disc cutter rotates around the second end of the first support arm, the first fulcrum can move relative to the harvester body.

5. The front-wheel drive disc knife harvester according to claim 4, further comprising: A first connecting assembly, wherein the first end of the first connecting assembly is connected to the harvester body, and the second end of the first connecting assembly is rotatably connected to the second end of the first support arm.

6. The front-wheel drive disc cutter harvester according to claim 5, wherein: The first transmission device includes a transmission chain or a transmission belt.

7. The front-wheel drive disc cutter harvester according to claim 6, wherein: The transmission chain or the transmission belt is connected to the central axis of the first front wheel, the central axis of the first disc cutter, the first fulcrum, and the second fulcrum in a counterclockwise direction.

8. The front-wheel drive disc cutter harvester according to claim 1 or 2, wherein: The center distance between the center axis of the first front wheel and the center axis of the first disc cutter is a constant value.

9. The front-wheel drive disc cutter harvester according to claim 8, The central axis of the first front wheel is connected to the harvester body through the main suspension arm; and The central axis of the first disc cutter is connected to the central axis of the first front wheel through a second support arm.

10. The front-wheel drive disc cutter harvester according to claim 9, wherein: Under the action of the second support arm, the center distance between the center axis of the first front wheel and the center axis of the first disc cutter remains unchanged.

11. The front-wheel drive disc knife harvester according to claim 9, further comprising: A second connecting assembly, wherein the first end of the second connecting assembly is connected to the harvester body, and the second end of the second connecting assembly limits the second arm in the first direction.

12. The front-wheel drive disc knife harvester according to claim 9, further comprising: A slave suspension arm, one end of which is hung on the harvester body, and the other end is hinged to the central axis of the first disc cutter.

13. The front-wheel drive disc cutter harvester according to claim 12, wherein: The master suspension arm includes an outer sliding sleeve, an inner sliding rod and an oil cylinder, and the slave suspension arm includes a sliding rod and a spring.

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