Feeding roller mechanism of silage maize harvester

Abstract

The utility model discloses a feeding roller mechanism of a silage maize harvester, which solves the problem that a feeding roller or a driving device is easy to damage when the feeding roller of the silage maize harvester is stuck. The feeding roller mechanism of the silage maize harvester comprises a driving roller, a driven roller and a transmission assembly, the transmission assembly comprises a driving wheel coaxially connected with the driving roller, a driven wheel connected with the driven roller and a transmission part in transmission connection with the driving wheel and the driven wheel, and the driven wheel comprises an inner wheel body and an outer wheel body surrounding the inner wheel body. The inner wheel body is coaxially connected with the driven roller, the outer wheel body is in transmission connection with the driving wheel, the inner wheel body is provided with a first transmission part and a pre-tightening elastic part, the inner surface of the outer wheel body is provided with a transmission groove, under the preset torque, the pre-tightening force of the elastic part acts on the first transmission part so that the first transmission part can be connected with the transmission groove, and the inner wheel body and the outer wheel body keep rotating synchronously; under the overload torque, the outer wheel body presses the first transmission piece to be separated from the transmission groove, the inner wheel body and the outer wheel body rotate relatively, and therefore the feeding roller mechanism is prevented from bearing the overlarge torque.

Description

Technical Field

[0001] This utility model relates to the field of silage harvester technology, and in particular to the feeding roller mechanism of silage harvesters. Background Technology

[0002] The operation of a silage harvester involves a series of processes, including harvesting, feeding, chopping, crushing, and conveying the silage material. The feed roller is driven to rotate by a drive unit. During feeding, the feed roller compacts the silage material and sends it to the chopping mechanism for further processing. However, when the feed rate is too high, the resistance between the silage material and the feed roller is significant, which can easily cause the feed roller to jam and become unable to rotate. At this time, the drive unit continues to provide power, which can easily lead to damage to both the feed roller and the drive unit. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art by proposing a feeding roller mechanism for a silage harvester, so as to solve the problem that the feeding roller or drive device is easily damaged when the feeding roller of the silage harvester gets stuck.

[0004] To achieve the above technical objectives, the feeding roller mechanism of the silage harvester proposed in this utility model includes a driving roller, a driven roller, and a transmission assembly. The transmission assembly includes a driving wheel coaxially connected to the driving roller, a driven wheel connected to the driven roller, and a transmission component that drivesly connects the driving wheel and the driven wheel. The driven wheel includes an inner wheel body and an outer wheel body surrounding the inner wheel body. The inner wheel body is coaxially connected to the driven roller, and the outer wheel body is drively connected to the driving wheel. The inner wheel body is provided with a first transmission component and a pre-tensioned elastic component, and the inner surface of the outer wheel body is provided with a transmission groove.

[0005] Under a predetermined torque, the preload of the elastic element acts on the first transmission element to make the first transmission element engage the transmission groove, and the inner wheel and the outer wheel rotate synchronously.

[0006] Under overload torque, the outer wheel body forces the first transmission component to disengage from the transmission groove, and the inner wheel body and the outer wheel body rotate relative to each other.

[0007] The feeding roller mechanism of this utility model, under a predetermined torque, uses the preload force of the elastic element to act on the first transmission element and engage with the transmission groove of the outer wheel body, thereby realizing the transmission between the inner and outer wheel bodies of the driven wheel. When too much silage material is fed in, causing the driven wheel to bear an overload torque, the outer wheel body of the driven wheel presses the first transmission element to disengage from the transmission groove, realizing the relative rotation of the outer and inner wheel bodies. This avoids the feeding roller mechanism from bearing excessive torque and being damaged when the driving roller and the driven roller are jammed due to too much silage material being fed in.

[0008] Preferably, the inner wheel body is further provided with a second transmission member. The first transmission member is guided to extend and retract in the inner wheel body along a first direction, and the second transmission member is guided to slide in the inner wheel body along a second direction. The first direction and the second direction intersect. The end of the first transmission member away from the transmission groove engages with the second transmission member. Under a predetermined torque, the elastic member applies a preload force to the first transmission member through the second transmission member.

[0009] Under overload torque, the force exerted by the outer wheel on the first transmission component compresses the elastic component through the second transmission component.

[0010] By adopting the aforementioned technical solution, the movement of the first transmission component and the preload of the elastic component are transmitted through the second transmission component. This eliminates the need for the elastic component to be positioned in the direction of movement of the first transmission component, reducing the superposition of the lengths of the first transmission component and the elastic component in the first direction. This ensures that when the extension path of the first transmission component is close to the radial direction of the inner wheel body, the elastic component will not extend towards the axis of the inner wheel body and interfere with the structure of the rotation axis of the inner wheel body. This allows the first direction of extension and retraction of the first transmission component to be closer to the radial direction of the inner wheel body, thereby reducing the transmission loss between the outer wheel body and the inner wheel body and improving the transmission efficiency between the outer wheel body and the inner wheel body.

[0011] Preferably, the inner wheel body is provided with a first guide channel and a second guide channel that communicate with each other. The first guide channel extends along a first direction, and the second guide channel extends along a second direction. The first transmission member is slidably engaged with the first guide channel. The first guide channel extends through the surface of the inner wheel body to form a first opening on one side facing the transmission groove. One end of the first transmission member extends out of the first opening and engages with the transmission groove. The second transmission member slides in the second guide channel along the second direction. The elastic member is provided at one end of the second guide channel opposite to the second transmission member.

[0012] By adopting the aforementioned technical solution, the movement of the first transmission component and the preload of the elastic component are transmitted through the second transmission component, so that the elastic component does not need to be set in the movement direction of the first transmission component. Since the first guide channel does not need to accommodate the elastic component, the length of the first guide channel is shortened. The first guide channel can extend in the radial direction close to the inner wheel body, thereby reducing the transmission loss between the outer wheel body and the inner wheel body and improving the transmission efficiency between the outer wheel body and the inner wheel body.

[0013] Preferably, the first transmission member has a guide surface on the side facing the elastic member, and the second transmission member has a mating surface that engages with the guide surface;

[0014] The guiding surface and / or the mating surface are inclined surfaces that extend from the first transmission member into the first opening and are inclined toward the second transmission member.

[0015] By adopting the aforementioned technical solution and through the above-mentioned settings, under a predetermined torque, the preload of the elastic element can be transmitted between the inner wheel body and the outer wheel body by pushing the first transmission element to engage the transmission groove through the second transmission element. Under overload torque, the force exerted by the outer wheel body on the first transmission element can compress the elastic element through the second transmission element and push the first and second transmission elements to move, thereby causing the inner wheel body and the outer wheel body to rotate relative to each other. This simplifies the structure of the first and second transmission elements and reduces the design and production costs of the feed roller mechanism.

[0016] Preferably, the first transmission member is further provided with a first transition surface, which extends obliquely from one end of the guide surface toward the end of the first transmission member away from the transmission groove, and / or, the second transmission member is further provided with a second transition surface, which extends obliquely from one end of the mating surface toward the end of the second transmission member close to the transmission groove.

[0017] By adopting the aforementioned technical solution and through the above-mentioned arrangement, the contact area between the first transmission component and the second transmission component is increased at the initial position of their engagement, making their engagement more stable. At the engagement critical point of the first transmission component and the second transmission component, the force can be transmitted between the first transmission component and the second transmission component more stably.

[0018] Preferably, the first transmission member is further provided with a first clearance surface, which is formed by extending one end of the guide surface toward the channel wall of the first guide channel near the second transmission member. The second transmission member is further provided with a second clearance surface, which is formed by extending one end of the mating surface toward the channel wall of the first guide channel near the second transmission member.

[0019] By adopting the aforementioned technical solution, on the one hand, the direction of the force exerted by the outer wheel on the first transmission component is closer to the engagement position of the first and second transmission components, thereby reducing the loss of force transmission between the first and second transmission components; on the other hand, the first and second transmission components can be engaged more stably, thereby improving the engagement stability of the first and second transmission components.

[0020] Preferably, the end of the second guide channel opposite to the second transmission member passes through the surface of the inner wheel body to form a second opening, and a screw cap is screwed onto the second opening. The two ends of the elastic member abut against the screw cap and the second transmission member, respectively.

[0021] By adopting the aforementioned technical solution, a screw cap is screwed onto the second opening of the second guide channel, making the preload of the elastic element adjustable. This allows the predetermined torque of the feeding roller mechanism to be adjusted accordingly, thereby improving the adaptability of the feeding roller mechanism.

[0022] Preferably, there are multiple first transmission components and multiple elastic components, and the multiple first transmission components and multiple elastic components are circumferentially symmetrically distributed on the inner wheel body.

[0023] By adopting the aforementioned technical solution, the inner wheel and the outer wheel can be circumferentially symmetrically transmitted, thereby improving the transmission stability between the inner wheel and the outer wheel.

[0024] Preferably, the elastic element includes a first spring and a second spring, with the second spring sleeved within the first spring, and the first spring and the second spring rotating in opposite directions.

[0025] By adopting the aforementioned technical solution, the contact area of ​​the elastic element is increased by setting a first spring and a second spring. Furthermore, since the first spring and the second spring rotate in opposite directions, at least a portion of the second spring is prevented from getting stuck in the gap of the spring bar of the first spring during compression and release, thereby improving the operational stability of the elastic element.

[0026] Preferably, the driving roller and the driven roller rotate in the same direction, and the linear velocity of the driving roller is less than the linear velocity of the driven roller.

[0027] By adopting the aforementioned technical solution, the feeding roller mechanism can push the silage back when too much silage is fed in, causing silage blockage. This allows the feeding roller mechanism to automatically push back the blocked silage, eliminating the need for manual operation by the operator or control system to reverse the feeding roller mechanism. This greatly simplifies the operation of the feeding roller mechanism and reduces its cost.

[0028] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the feeding roller mechanism in an embodiment of the present invention;

[0030] Figure 2 This is a cross-sectional view of the transmission component in an embodiment of the present utility model;

[0031] Figure 3 For the predetermined torque Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 Under overload torque Figure 2 A magnified view of point A in the middle;

[0033] Figure 5 This is a schematic diagram of the first and second transmission components.

[0034] Figure label:

[0035] 100. Active roller;

[0036] 200. Driven roller; 210. Toothed plate;

[0037] 300. Drive wheel; 310. Transmission components;

[0038] 400 Driven wheel; 410 Outer wheel body; 411 Transmission groove; 412 Push-off wall; 420 Inner wheel body; 421 First guide channel; 422 Second guide channel; 423 First opening; 424 Second opening; 425 Guide limiting member; 4251 Limiting part; 4252 Guide part; 426 Screw cap;

[0039] 500, First transmission component; 510, Guide surface; 520, First transition surface; 530, First clearance surface; 540, First clearance space; 600, Second transmission component; 610, Mating surface; 620, Second transition surface; 630, Second clearance surface; 640, Second clearance space; 700, Elastic component; 710, First spring; 720, Second spring;

[0040] 800, casing;

[0041] 900. Electric motor. Detailed Implementation

[0042] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more, unless otherwise expressly defined.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] like Figures 1 to 4 As shown in the embodiment of this utility model, the feeding roller mechanism of the silage machine includes a drive roller 100, a driven roller 200, a motor 900, and a transmission assembly. The transmission assembly includes a housing 800, a drive wheel 300, a transmission wheel, and a transmission component. The drive wheel 300 is coaxially connected to the drive roller 100, and the driven wheel 400 is connected to the driven roller 200. The drive wheel 300 and the driven wheel 400 are connected by a transmission component. The rotation of the motor 900 drives the drive roller 100 to rotate, thereby driving the drive wheel 300 to rotate. The rotation of the drive wheel 300 drives the driven wheel 400 to rotate through the transmission component.

[0047] The driven wheel 400 includes an inner wheel body 420 and an outer wheel body 410 surrounding the inner wheel body 420. The inner wheel body 420 is coaxially connected to the driven roller 200, and the outer wheel body 410 is connected to the driving wheel 300 through a transmission component. The inner wheel body 420 is provided with a first transmission component 500 and a pre-tightened elastic component 700, and the inner surface of the outer wheel body 410 is provided with a transmission groove 411.

[0048] The driven roller 200 has multiple axially extending toothed plates 210 arranged circumferentially. The surface of the driving roller 100 is smooth. When the driven roller 200 rotates, the toothed plates 210 cooperate with the surface of the driving roller 100 to compact the fed silage and convey it to the rear-end chopping mechanism for chopping. The adjacent positions of the driving roller 100 and the driven roller 200 are their working positions. At these working positions, the silage is compacted by the driving roller 100 and the driven roller 200. The resistance of the silage during the compaction process is converted into a rotational load on the driving roller 100 and the driven roller 200. The torque output by the motor 900 is transmitted to the driven roller 200 through a transmission component to overcome the rotational load on the driven roller 200.

[0049] Under a predetermined torque, the preload of the elastic element 700 acts on the first transmission element 500 so that one end of the first transmission element 500 engages with the transmission groove 411. The outer wheel body 410 transmits torque to the inner wheel body 420 through the engagement of the first transmission element 500 with the transmission groove 411, so that the inner wheel body 420 and the outer wheel body 410 rotate synchronously.

[0050] When too much silage is fed in, the rotational load on the driven roller 200 increases. To overcome the resistance, the motor 900 increases its output torque, causing the transmission component to transmit an overload torque to the outer wheel 410. Under the overload torque, the force exerted by the outer wheel 410 on the first transmission component 500 is transmitted to the elastic component 700, causing the elastic component 700 to be compressed. The compression of the elastic component 700 causes the first transmission component 500 to be pressed out of the transmission groove 411 by the outer wheel 410. The outer wheel 410 cuts off the transmission torque to the inner wheel 420, and the inner wheel 420 and the outer wheel 410 rotate relative to each other.

[0051] In this embodiment, the transmission groove 411 is provided with a push-off wall 412, which gradually tilts towards the inner wheel 420 from front to back in the rotation direction of the outer wheel body 410.

[0052] Under a predetermined torque, the preload of the elastic element 700 acts on the first transmission element 500, engaging the transmission groove 411 of the outer wheel body 410, thereby realizing the transmission between the inner wheel body 420 and the outer wheel body 410 of the driven wheel 400. When too much silage material is fed in, causing the driven wheel 400 to bear an overload torque, the outer wheel body 410 of the driven wheel 400 presses the first transmission element 500 out of the transmission groove 411, realizing the relative rotation of the outer wheel body 410 and the inner wheel body 420. This avoids damage to the feeding roller mechanism due to excessive torque when the driving roller 100 and the driven roller 200 are jammed because too much silage material is fed in.

[0053] When the feeding roller mechanism of this utility model is overloaded due to excessive feeding of silage material, the driven wheel 400 slips relative to the clutch wheel through the clutch transmission component. This causes the clutch transmission component to slip and cut off the transmission between the motor 900 and the driven roller 200, thus stopping the feeding roller mechanism from being damaged under excessive torque.

[0054] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 4As shown, the inner wheel body 420 is also provided with a second transmission member 600. The first transmission member 500 is guided to extend and retract in the inner wheel body 420 along a first direction, and the second transmission member 600 is guided to slide in the inner wheel body 420 along a second direction. The first and second directions intersect, and the end of the first transmission member 500 facing away from the transmission groove 411 engages with the second transmission member 600. Under a predetermined torque, the elastic member 700 applies a preload force to the first transmission member 500 through the second transmission member 600. Under an overload torque, the force exerted by the outer wheel body 410 on the first transmission member 500 compresses the elastic member 700 through the second transmission member 600.

[0055] The extension path of the first transmission member 500 needs to be located as far as possible in the radial direction of the inner wheel body 420 in order to reduce the angle between the direction of the force exerted by the outer wheel body 410 on the first transmission member 500 and the direction of the force exerted by the first transmission member 500 on the inner wheel body 420, thereby reducing the transmission loss of the first transmission member 500 between the outer wheel body 410 and the inner wheel body 420.

[0056] With the above configuration, the movement of the first transmission member 500 and the preload of the elastic member 700 are transmitted through the second transmission member 600. This eliminates the need for the elastic member 700 to be positioned in the movement direction of the first transmission member 500, reducing the superposition of the lengths of the first transmission member 500 and the elastic member 700 in the first direction. This ensures that when the extension path of the first transmission member 500 is close to the radial direction of the inner wheel body 420, the elastic member 700 will not extend towards the axis of the inner wheel body 420 and interfere with the structure of the rotation axis of the inner wheel body 420. This allows the first direction of extension of the first transmission member 500 to be closer to the radial direction of the inner wheel body 420, thereby reducing the transmission loss between the outer wheel body 410 and the inner wheel body 420 and improving the transmission efficiency between the outer wheel body 410 and the inner wheel body 420.

[0057] Preferably, the first direction and the second direction intersect perpendicularly.

[0058] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 4 As shown, the inner wheel body 420 is provided with a first guide channel 421 and a second guide channel 422 that are in communication. The first guide channel 421 extends along a first direction. The first transmission member 500 is slidably engaged with the first guide channel 421. One end of the first guide channel 421 facing the transmission groove 411 penetrates the surface of the inner wheel body 420 to form a first opening 423. The second transmission member 600 slides in the second guide channel 422 along a second direction. The elastic member 700 is provided at one end of the second guide channel 422 away from the second transmission member 600. The preload of the elastic member 700 is applied to the first transmission member 500 through the second transmission member 600 so that one end of the first transmission member 500 extends out of the first opening 423 and engages with the transmission groove 411.

[0059] Under a predetermined torque, the elastic element 700 applies a preload force to the first transmission element 500 via the second transmission element 600. Under an overload torque, the force exerted by the outer wheel body 410 on the first transmission element 500 compresses the elastic element 700 via the second transmission element 600. The force exerted by the outer wheel body 410 on the first transmission element 500 is transmitted to the inner wheel body 420 through the contact between the first transmission element 500 and the channel wall of the first guide channel 421.

[0060] By providing a first guide channel 421 and a second guide channel 422 in the inner wheel body 420, the movement directions of the first transmission member 500 and the second transmission member 600 can be guided by the first guide channel 421 and the second guide channel 422 respectively, thereby ensuring the accuracy of the movement directions of the first transmission member 500 and the second transmission member 600 and improving the engagement stability of the first transmission member 500 and the second transmission member 600.

[0061] In this embodiment, the first guide channel 421 and the second guide channel 422 are filled with grease to reduce the friction of the components in the first guide channel 421 and the second guide channel 422 during movement.

[0062] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 4 As shown, the first guide channel 421 is also provided with a guide limiting member 425. The guide limiting member 425 includes a limiting part 4251 and a guiding part 4252. The limiting part 4251 is attached to the channel wall of the first guide channel 421 on the side away from the second transmission member 600, so that the limiting part 4251 and the channel wall on the other side of the first guide channel 421 guide the extension and retraction direction of the first transmission member 500. The guiding part 4252 extends from the end of the limiting part 4251 away from the transmission groove 411 toward the second transmission member 600 in a second direction. One end of the second transmission member 600 is pressed against the guiding part 4252, so that the second transmission member 600 slides along the extension direction of the guiding part 4252.

[0063] When drilling holes in the inner wheel body 420 to form the first guide channel 421, it is difficult to form a flat bottom at the bottom of the hole to guide the sliding of the second transmission member 600. By setting the guide limiting member 425, a guide part 4252 that can guide the sliding of the second transmission member 600 is set at the bottom of the first guide channel 421, ensuring that the second transmission member 600 can slide in the second direction and improving the engagement stability between the first transmission member 500 and the second transmission member 600.

[0064] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 4As shown, the second guide channel 422, at one end opposite to the second transmission member 600, penetrates the surface of the inner wheel body 420 to form a second opening 424. A cap 426 is screwed onto the second opening 424. The two ends of the elastic member 700 abut against the cap 426 and the second transmission member 600, respectively. The second opening 424 has an internal thread, and the cap 426 has an external thread. Rotating the cap 426 changes its position screwed onto the second opening 424, thereby changing the preload of the elastic member 700.

[0065] By screwing a cap 426 onto the second opening 424 of the second guide channel 422, the preload of the elastic element 700 becomes adjustable, thereby adjusting the predetermined torque of the feed roller mechanism accordingly and improving the adaptability of the feed roller mechanism.

[0066] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 5 As shown, the first transmission member 500 has a guide surface 510 on the side facing the elastic member 700, and the second transmission member 600 has a mating surface 610 that engages with the guide surface 510. The guide surface 510 and the mating surface 610 are inclined surfaces that are inclined toward the second transmission member 600 in the direction that the first transmission member 500 extends out of the first opening 423.

[0067] Under a predetermined torque, the inclined surfaces of the guide surface 510 and the mating surface 610 cause the force of the elastic element 700 to generate a component force in the direction of the transmission groove 411 on the first transmission member 500, thereby pushing one end of the first transmission member 500 to extend out of the inner wheel body 420 and engage in the transmission groove 411, causing the inner wheel body 420 and the outer wheel body 410 to rotate synchronously. Under an overload torque, the force of the outer wheel body 410 on the first transmission member 500 can generate a component force in the direction of the elastic element 700 on the second transmission member 600 through the engagement of the guide surface 510 and the mating surface 610, causing the elastic element 700 to compress. At the same time, the guide surface 510 and the mating surface 610 can slide relative to each other, so that when the first transmission member 500 retracts into the first guide channel 421, it pushes the second transmission member 600 to move in the direction of the elastic element 700.

[0068] With the above configuration, under a predetermined torque, the preload of the elastic element 700 can be transmitted between the inner wheel body 420 and the outer wheel body 410 by pushing the first transmission element 500 to engage the transmission groove 411 through the second transmission element 600. Under overload torque, the force exerted by the outer wheel body 410 on the first transmission element 500 can be transmitted between the inner wheel body 420 and the outer wheel body 410 by the second transmission element 600 to compress the elastic element 700 and push the first transmission element 500 and the second transmission element 600 to rotate relative to each other. This simplifies the structure of the first transmission element 500 and the second transmission element 600 and reduces the design and production costs of the feed roller mechanism.

[0069] It is understood that in some other embodiments, one of the guide surface 510 and the mating surface 610 may be an inclined surface that slopes toward the second transmission member 600 in the direction that extends from the first transmission member 500 out of the first opening 423.

[0070] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 5 As shown, the first transmission member 500 is also provided with a first transition surface 520. The first transition surface 520 extends obliquely from one end of the guide surface 510 toward the end of the first transmission member 500 away from the transmission groove 411. The second transmission member 600 is also provided with a second transition surface 620. The second transition surface 620 extends obliquely from one end of the mating surface 610 toward the end of the second transmission member 600 near the transmission groove 411.

[0071] Among them, the slope of the first transition surface 520 is greater than that of the guide surface 510, and the slope of the second transition surface 620 is greater than that of the mating surface 610.

[0072] With the above settings, the contact area between the first transmission component 500 and the second transmission component 600 is increased at the initial position of their engagement, making their engagement more stable. At the engagement critical point of the first transmission component 500 and the second transmission component 600, the force can be transmitted between the first transmission component 500 and the second transmission component 600 more stably.

[0073] In this embodiment, the first transition surface 520 and the guide surface 510 have an arc transition, and the second transition surface 620 and the mating surface 610 have an arc transition, thereby enabling the first transmission member 500 and the second transmission member 600 to move relatively smoothly.

[0074] It is understood that in some other embodiments, a transition surface may be provided on one of the guide surface 510 and the mating surface 610.

[0075] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 5 As shown, the first transmission member 500 is also provided with a first clearance surface 530, which is formed by extending one end of the guide surface 510 toward the channel wall of the first guide channel 421 near the second transmission member 600. The second transmission member 600 is also provided with a second clearance surface 630, which is formed by extending one end of the mating surface 610 toward the channel wall of the first guide channel 421 near the second transmission member 600.

[0076] The first clearance surface 530 creates a first clearance 540 between the guide surface 510 and the channel wall of the first guide channel 421 near the second transmission member 600. The first clearance 540 can accommodate at least a portion of the second transmission member 600, thereby shortening the central distance between the second transmission member 600 and the first transmission member 500. This makes the direction of the force exerted by the outer wheel body 410 on the first transmission member 500 closer to the engagement position of the first transmission member 500 and the second transmission member 600, reducing the loss in force transmission between the first transmission member 500 and the second transmission member 600. The second clearance surface 630 creates a second clearance 640 between the mating surface 610 and the channel wall of the first guide channel 421 near the second transmission member 600. The second clearance 640 creates a certain gap between the mating surface 610 and the channel wall of the first guide channel 421 on the side near the second transmission member 600, thereby preventing the mating surface 610 from being too close to the channel wall of the first guide channel 421, which would prevent the guide surface 510 and the mating surface 610 from being unable to engage.

[0077] With the above configuration, on the one hand, the direction of the force exerted by the outer wheel body 410 on the first transmission member 500 is closer to the engagement position of the first transmission member 500 and the second transmission member 600, reducing the loss of force transmission between the first transmission member 500 and the second transmission member 600; on the other hand, the first transmission member 500 and the second transmission member 600 can be engaged more stably, improving the engagement stability of the first transmission member 500 and the second transmission member 600.

[0078] In this embodiment, the guide surface 510 and the first yielding surface 530 have an arc transition, and the mating surface 610 and the second yielding surface 630 have an arc transition.

[0079] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 4 As shown, the elastic element 700 includes a first spring 710 and a second spring 720, with the second spring 720 sleeved in the first spring 710, and the first spring 710 and the second spring 720 rotating in opposite directions.

[0080] By providing a first spring 710 and a second spring 720, the contact area of ​​the elastic element 700 is increased. Furthermore, since the first spring 710 and the second spring 720 rotate in opposite directions, at least a portion of the second spring 720 is prevented from getting stuck in the gap of the spring bar of the first spring 710 during compression and release, thereby improving the operational stability of the elastic element 700.

[0081] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figures 2 to 4As shown, there are multiple first transmission components 500 and multiple elastic components 700 respectively. The multiple first transmission components 500 and multiple elastic components 700 are circumferentially symmetrically distributed on the inner wheel body 420.

[0082] This configuration enables circumferential symmetrical transmission between the inner wheel 420 and the outer wheel 410, improving the transmission stability between them.

[0083] In this embodiment, multiple second transmission components 600 and multiple guide channels 421 are provided, and the multiple second transmission components 600 and multiple guide channels 421 are correspondingly arranged with the first transmission component 500.

[0084] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figure 2 As shown, the driving roller 100 and the driven roller 200 rotate in the same direction, with the linear velocity of the driving roller 100 being less than that of the driven roller 200. Because the driving roller 100 and the driven roller 200 rotate in the same direction, their movements at the working position are opposite. The driving roller 100 rotates along the direction of silage material discharge at the working position, while the driven roller 200 rotates along the direction of silage material feed. Since the linear velocity of the driven roller 200 is greater than that of the driving roller 100, the compacted silage material can be fed to the rear-end chopping mechanism for chopping through the working position.

[0085] When too much silage is fed in, causing excessive running resistance in the feeding roller mechanism, the driven roller 400 and the clutch roller, under the action of the clutch transmission assembly, disconnect the transmission between them, causing the driven roller 200 to stop rotating while the driving roller 100 continues to rotate. At the same time, since the driving roller 100 rotates in the direction of silage discharge in the working position, it can discharge the silage that is blocked between the driving roller 100 and the driven roller 200, thereby reducing the resistance between the driving roller 100 and the driven roller 200. As a result, the driven roller 400 and the clutch roller can restore coupling, allowing the driven roller 200 to continue rotating.

[0086] With the above settings, the feeding roller mechanism can push the silage back when too much silage is fed in, causing silage blockage. This allows the feeding roller mechanism to automatically push back the blocked silage, eliminating the need for manual operation by the operator or control system to reverse the feeding roller mechanism. This greatly simplifies the operation of the feeding roller mechanism and reduces its cost.

[0087] In one embodiment, the feed roller mechanism based on the foregoing embodiments, such as Figure 2 As shown, both the driving wheel 300 and the outer wheel 410 are gears, and the transmission component is an annular transmission belt that connects the driving wheel 300 and the driven wheel 400. The annular transmission belt can be a chain or a synchronous belt.

[0088] In some other embodiments, the transmission element may also be an odd number of idler gears meshing between the driving gear 300 and the driven gear 400.

[0089] This configuration simplifies the transmission structure between the driving wheel 300 and the driven wheel 400, reducing the cost of transmission components.

[0090] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A feeding roller mechanism for a silage harvester, comprising a driving roller, a driven roller, and a transmission assembly, wherein the transmission assembly includes a driving wheel coaxially connected to the driving roller, a driven wheel connected to the driven roller, and a transmission component drivingly connecting the driving wheel and the driven wheel, characterized in that, The driven wheel includes an inner wheel body and an outer wheel body surrounding the inner wheel body. The inner wheel body is coaxially connected to the driven roller, and the outer wheel body is drively connected to the driving wheel. The inner wheel body is provided with a first transmission element and a pre-tensioned elastic element, and the inner surface of the outer wheel body is provided with a transmission groove. Under a predetermined torque, the preload of the elastic element acts on the first transmission element to make the first transmission element engage the transmission groove, and the inner wheel and the outer wheel rotate synchronously. Under overload torque, the outer wheel body forces the first transmission component to disengage from the transmission groove, and the inner wheel body and the outer wheel body rotate relative to each other.

2. The feeding roller mechanism of the silage harvester as described in claim 1, characterized in that, The inner wheel body is further provided with a second transmission component. The first transmission component is guided to extend and retract within the inner wheel body along a first direction, and the second transmission component is guided to slide within the inner wheel body along a second direction. The first direction and the second direction intersect. The end of the first transmission component opposite to the transmission groove engages with the second transmission component. Under a predetermined torque, the elastic element applies a preload to the first transmission element through the second transmission element; Under overload torque, the force exerted by the outer wheel on the first transmission component compresses the elastic component through the second transmission component.

3. The feeding roller mechanism of the silage harvester as described in claim 2, characterized in that, The inner wheel body is provided with a first guide channel and a second guide channel that communicate with each other. The first guide channel extends along a first direction, and the second guide channel extends along a second direction. The first transmission member is slidably engaged with the first guide channel. The first guide channel extends through the surface of the inner wheel body to form a first opening on one side facing the transmission groove. One end of the first transmission member extends out of the first opening and engages with the transmission groove. The second transmission member slides in the second guide channel along the second direction. The elastic member is provided at one end of the second guide channel opposite to the second transmission member.

4. The feeding roller mechanism of the silage harvester as described in claim 3, characterized in that, The first transmission member has a guide surface on the side facing the elastic member, and the second transmission member has a mating surface that engages with the guide surface; The guiding surface and / or the mating surface are inclined surfaces that extend from the first transmission member into the first opening and are inclined toward the second transmission member.

5. The feeding roller mechanism of the silage harvester as described in claim 4, characterized in that, The first transmission member is further provided with a first transition surface, which extends obliquely from one end of the guide surface toward the end of the first transmission member away from the transmission groove, and / or the second transmission member is further provided with a second transition surface, which extends obliquely from one end of the mating surface toward the end of the second transmission member closer to the transmission groove.

6. The feeding roller mechanism of the silage harvester as described in claim 4, characterized in that, The first transmission member is also provided with a first clearance surface, which is formed by extending one end of the guide surface toward the channel wall of the first guide channel near the second transmission member. The second transmission member is also provided with a second clearance surface, which is formed by extending one end of the mating surface toward the channel wall of the first guide channel near the second transmission member.

7. The feeding roller mechanism of the silage harvester as described in claim 3, characterized in that, The second guide channel, at one end opposite to the second transmission member, penetrates the surface of the inner wheel body to form a second opening. A screw cap is screwed onto the second opening, and the two ends of the elastic member abut against the screw cap and the second transmission member, respectively.

8. The feeding roller mechanism of the silage harvester as described in claim 1, characterized in that, The first transmission component is provided in multiple ways, and the elastic component is provided in multiple ways accordingly. The multiple first transmission components and the multiple elastic components are circumferentially symmetrically distributed on the inner wheel body.

9. The feeding roller mechanism of the silage harvester as described in claim 1, characterized in that, The elastic element includes a first spring and a second spring, with the second spring sleeved inside the first spring, and the first spring and the second spring rotating in opposite directions.

10. The feeding roller mechanism of the silage harvester as described in claim 1, characterized in that, The driving roller and the driven roller rotate in the same direction, and the linear velocity of the driving roller is less than that of the driven roller.

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