Feeding roller mechanism of silage machine

Abstract

The invention discloses a feeding roller mechanism of a silage machine, and solves the problem that the feeding roller or a driving device of the silage machine is easily damaged when the feeding roller of the silage machine is stuck. The feeding roller mechanism of the silage machine proposed by the invention comprises a driving roller, a driven roller and a transmission assembly, the transmission assembly comprises a driving wheel coaxially connected to the driving roller, a driven wheel connected to the driven roller, and a transmission member for transmission connection between the driving wheel and the driven wheel, 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 to the driven roller, the outer wheel body is transmission-connected to the driving wheel, the inner wheel body is provided with a first transmission member and a pre-tightened elastic member, the inner surface of the outer wheel body is provided with a transmission groove, under a predetermined torque, the pre-tightening force of the elastic member acts on the first transmission member to make the first transmission member engage the transmission groove, and the inner wheel body and the outer wheel body keep rotating synchronously; under an overload torque, the outer wheel body presses the first transmission member to disengage from the transmission groove, and the inner wheel body and the outer wheel body rotate relatively, thereby preventing the feeding roller mechanism from being subjected to excessive torque.

Description

Technical Field

[0001] The invention relates to the technical field of silage machines, in particular to a feeding roller mechanism of a silage machine. Background Art

[0002] The working process of the silage harvester includes a series of processes such as harvesting, feeding, chopping, grain crushing and throwing of silage materials. The feeding roller is driven to rotate by the driving device. During the feeding process, the feeding roller compacts the fed silage materials and sends them to the chopping mechanism for chopping. However, when the feeding amount is too large, the resistance between the silage materials and the feeding roller is large, which can easily cause the feeding roller to get stuck and unable to rotate. However, the driving device is still providing power at this time, which can easily cause damage to the feeding roller and the driving device. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a feeding roller mechanism for a silage machine to solve the problem that the feeding roller or the driving device of the silage machine is easily damaged when the feeding roller of the silage machine is stuck.

[0004] In order to achieve the above technical objectives, the feeding roller mechanism of the silage machine proposed in the present invention includes 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 member that transmission connects the driving wheel and the driven wheel, wherein the driven wheel includes an inner wheel body and an outer wheel body surrounding the inner wheel body, wherein the inner wheel body is coaxially connected to the driven roller, and the outer wheel body is transmission-connected to the driving wheel, wherein the inner wheel body is provided with a first transmission member and a pre-tightened elastic member, and the inner surface of the outer wheel body is provided with a transmission groove, Under a predetermined torque, the preload force of the elastic member acts on the first transmission member to make the first transmission member engage with the transmission groove, and the inner wheel body and the outer wheel body keep rotating synchronously; Under overload torque, the outer wheel body presses the first transmission member to disengage from the transmission groove, and the inner wheel body and the outer wheel body rotate relatively.

[0005] The feeding roller mechanism of the present invention, under a predetermined torque, realizes transmission between the inner wheel body and the outer wheel body of the driven wheel by the pre-tightening force of the elastic member acting on the first transmission member and engaging with the transmission groove of the outer wheel body. When the driven wheel is subjected to overload torque due to excessive feeding of silage material, the outer wheel body of the driven wheel presses the first transmission member to disengage from the transmission groove, realizing relative rotation of the outer wheel body and the inner wheel body, thereby preventing the feeding roller mechanism from being subjected to excessive torque and being damaged when the active roller and the driven roller are stuck due to excessive feeding of silage material.

[0006] Preferably, a second transmission member is further provided on the inner wheel body, the first transmission member is guided to be extended and retracted in the inner wheel body along a first direction, 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, an end of the first transmission member away from the transmission groove engages with the second transmission member, and under a predetermined torque, the elastic member applies a preload force to the first transmission member through the second transmission member; Under overload torque, the force exerted by the outer wheel body on the first transmission member compresses the elastic member through the second transmission member.

[0007] By adopting the above-mentioned technical scheme, the movement of the first transmission member and the preload force of the elastic member are transmitted through the second transmission member, so that the elastic member does not need to be arranged in the movement direction of the first transmission member, thereby reducing the superposition of the lengths of the first transmission member and the elastic member in the first direction, so that when the telescopic path of the first transmission member is close to the radial direction of the inner wheel body, the elastic member will not extend in the axial direction of the inner wheel body and interfere with the structure of the rotating axis of the inner wheel body, so that the first direction of the telescopic movement of the first transmission member can 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 of the outer wheel body and the inner wheel body.

[0008] Preferably, the inner wheel body is provided with a first guide channel and a second guide channel that are in communication with each other, the first guide channel extends along a first direction, the second guide channel extends along a second direction, the first transmission member is slidably fitted in the first guide channel, the first guide channel passes through the surface of the inner wheel body toward one side of the transmission groove to form a first opening, one end of the first transmission member extends out of the first opening and engages with the transmission groove, the second transmission member slides along the second direction in the second guide channel, and the elastic member is arranged at one end of the second guide channel that is away from the second transmission member.

[0009] By adopting the above-mentioned technical solution, the movement of the first transmission member and the preload force of the elastic member are transmitted through the second transmission member, so that the elastic member does not need to be arranged in the movement direction of the first transmission member. Since the first guide channel does not need to accommodate the elastic member, the length of the first guide channel is shortened, and 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 of the outer wheel body and the inner wheel body.

[0010] Preferably, a guide surface is provided on a side of the first transmission member facing the elastic member, and a matching surface engaging with the guide surface is provided on the second transmission member; The guiding surface and / or the matching surface is an inclined surface inclined toward the second transmission member along the direction in which the first transmission member extends out of the first opening.

[0011] By adopting the above-mentioned technical solution and through the above-mentioned arrangement, under a predetermined torque, the preload force of the elastic member can be transmitted between the inner wheel body and the outer wheel body by the second transmission member pushing the first transmission member to engage the transmission groove; under an overload torque, the force of the outer wheel body on the first transmission member can cause the inner wheel body and the outer wheel body to rotate relative to each other through the second transmission member compressing the elastic member and pushing the first transmission member and the second transmission member to move, thereby simplifying the structure of the first transmission member and the second transmission member and reducing the design and production costs of the feeding roller mechanism.

[0012] Preferably, the first transmission member is further provided with a first transition surface, which extends obliquely from one end of the guide surface to one 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 to one end of the second transmission member close to the transmission groove.

[0013] By adopting the aforementioned technical solution and through the above-mentioned settings, the contact area between the first transmission member and the second transmission member is increased at the initial position where they are engaged, so that the engagement between the two is more stable. At the critical point of engagement between the first transmission member and the second transmission member, the force between the first transmission member and the second transmission member can be transmitted more stably.

[0014] Preferably, the first transmission member is further provided with a first give-way surface, which is formed by extending from one end of the guide surface to the channel wall of the first guide channel close to the second transmission member, and the second transmission member is further provided with a second give-way surface, which is formed by extending from one end of the mating surface to the channel wall of the first guide channel close to the second transmission member.

[0015] By adopting the above-mentioned technical solution, on the one hand, the direction of the force exerted by the outer wheel body on the first transmission member is closer to the engagement position of the first transmission member and the second transmission member, thereby reducing the loss of force transmission between the first transmission member and the second transmission member; on the other hand, the first transmission member and the second transmission member can be engaged more stably, thereby improving the engagement stability of the first transmission member and the second transmission member.

[0016] Preferably, one end of the second guide channel away from the second transmission member passes through the surface of the inner wheel body to form a second opening, a rotary cover is screwed on the second opening, and two ends of the elastic member respectively abut against the rotary cover and the second transmission member.

[0017] By adopting the above technical solution, a screw cap is screwed on the second opening of the second guide channel, so that the preload force of the elastic member becomes adjustable, so that the predetermined torque of the feeding roller mechanism can be adjusted accordingly, thereby improving the adaptability of the feeding roller mechanism.

[0018] Preferably, the first transmission members are provided in plurality, and the elastic members are provided in plurality accordingly, and the plurality of the first transmission members and the plurality of the elastic members are symmetrically distributed on the inner wheel body in the circumferential direction.

[0019] By adopting the above-mentioned technical solution, the transmission between the inner wheel body and the outer wheel body can be circumferentially symmetrical, thereby improving the transmission stability between the inner wheel body and the outer wheel body.

[0020] Preferably, the elastic member comprises a first spring and a second spring, the second spring is sleeved in the first spring, and the first spring and the second spring have opposite rotation directions.

[0021] By adopting the above-mentioned technical solution, the contact area of ​​the elastic member is increased by arranging the first spring and the second spring. Moreover, since the rotation directions of the first spring and the second spring are opposite, it is avoided that at least part of the second spring is stuck in the gap of the spring bar of the first spring when the first spring and the second spring are compressed and released, thereby improving the operating stability of the elastic member.

[0022] Preferably, the active roller and the driven roller rotate in the same direction, and the linear speed of the active roller is lower than the linear speed of the driven roller.

[0023] By adopting the above-mentioned technical solution, the feeding roller mechanism can push the silage material back through the rotation of the driving wheel when the silage material is blocked due to excessive feeding, so that the feeding roller mechanism can automatically push back the silage material blockage without the need for manual operation by the operator or control of the feeding roller mechanism to reverse through the control system, thereby greatly simplifying the operation of the feeding roller mechanism and the cost of the feeding roller mechanism.

[0024] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of a feeding roller mechanism in an embodiment of the present invention; Figure 2 is a cross-sectional view of a transmission assembly in an embodiment of the present invention; Figure 3 For the preset torque Figure 2 The enlarged view of point A in the middle; Figure 4 Overload torque Figure 2 The enlarged view of the A in the middle; Figure 5 Schematic diagram of a first transmission member and a second transmission member.

[0026] Reference numerals: 100. Active roller; 200, driven roller, 210, tooth plate; 300, driving wheel, 310, transmission part; 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 limiter, 4251, limiter part, 4252, guide part, 426, rotary cover; 500, first transmission member, 510, guide surface, 520, first transition surface, 530, first clearance surface, 540, first avoidance position; 600, second transmission member, 610, matching surface, 620, second transition surface, 630, second clearance surface, 640, second avoidance position; 700, elastic member, 710, first spring, 720, second spring; 800, housing; 900. Motor. DETAILED DESCRIPTION

[0027] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" and "several" mean two or more, unless otherwise clearly specified.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 4 As shown, the feeding roller mechanism of the silage machine proposed in the embodiment of the present invention includes a driving roller 100, a driven roller 200, a motor 900 and a transmission assembly, the transmission assembly includes a housing 800, a driving wheel 300, a transmission wheel and a transmission member, the driving wheel 300 is coaxially connected to the driving roller 100, the driven wheel 400 is connected to the driven roller 200, the driving wheel 300 and the driven wheel 400 are connected through the transmission member, the rotation of the motor 900 drives the driving roller 100 to rotate, thereby driving the driving wheel 300 to rotate, and the rotation of the driving wheel 300 drives the driven wheel 400 to rotate through the transmission member.

[0032] Among them, 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, the outer wheel body 410 is connected to the driving wheel 300 through a transmission member, the inner wheel body 420 is provided with a first transmission member 500 and a pre-tightened elastic member 700, and the inner surface of the outer wheel body 410 is provided with a transmission groove 411.

[0033] The driven roller 200 is provided with a plurality of tooth plates 210 extending in the axial direction on the circumferential surface. The surface of the driving roller 100 is smooth. When the driven roller 200 rotates, the tooth plates 210 cooperate with the surface of the driving roller 100 to compact the fed silage material and convey it to the shredding mechanism at the rear end for shredding. The adjacent positions of the driving roller 100 and the driven roller 200 are the cooperation working positions of the two. The silage material is compacted by the driving roller 100 and the driven roller 200 at the cooperation working positions of the two. The resistance of the silage material during the compaction process is converted into the rotation load of the driving roller 100 and the driven roller 200. The torque output by the motor 900 is transmitted to the driven roller 200 through the transmission member to overcome the rotation load of the driven roller 200.

[0034] Under a predetermined torque, the preload force of the elastic member 700 acts on the first transmission member 500 so that one end of the first transmission member 500 engages with the transmission groove 411, and the outer wheel body 410 transmits torque to the inner wheel body 420 through the engagement of the first transmission member 500 with the transmission groove 411, so that the inner wheel body 420 and the outer wheel body 410 maintain synchronous rotation.

[0035] When too much silage is fed, the rotation load of the driven roller 200 increases, and the motor 900 increases the output torque to overcome the resistance, so that the transmission member transmits the overload torque to the outer wheel body 410. Under the overload torque, the force of the outer wheel body 410 on the first transmission member 500 is transmitted to the elastic member 700, so that the elastic member 700 is compressed. The compression of the elastic member 700 causes the first transmission member 500 to be pressed by the outer wheel body 410 and disengage from the transmission groove 411, and the outer wheel body 410 cuts off the torque transmission to the inner wheel body 420, and the inner wheel body 420 and the outer wheel body 410 rotate relatively.

[0036] In this embodiment, a push-away wall 412 is provided on the transmission groove 411 , and the push-away wall 412 is gradually inclined from front to back toward the inner wheel body 420 in the rotation direction of the outer wheel body 410 .

[0037] Under a predetermined torque, the preload force of the elastic member 700 acts on the first transmission member 500 and engages with the transmission groove 411 of the outer wheel body 410, thereby realizing transmission between the inner wheel body 420 and the outer wheel body 410 of the driven wheel 400. When the driven wheel 400 is subjected to overload torque due to excessive feeding of silage materials, the outer wheel body 410 of the driven wheel 400 presses the first transmission member 500 to disengage from the transmission groove 411, thereby realizing relative rotation between the outer wheel body 410 and the inner wheel body 420, thereby preventing the feeding roller mechanism from being subjected to excessive torque and being damaged when the driving roller 100 and the driven roller 200 are stuck due to excessive feeding of silage materials.

[0038] When too much silage material is fed into the feeding roller mechanism of the present invention, resulting in an overload torque of the clutch transmission assembly, the driven wheel 400 slips relative to the clutch wheel through the clutch transmission assembly, causing the clutch transmission assembly to slip and cut off the transmission between the motor 900 and the driven roller 200, and the feeding roller mechanism stops feeding, thereby preventing the feeding roller mechanism from being damaged under excessive torque.

[0039] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 4 As shown, the inner wheel body 420 is further provided with a second transmission member 600, the first transmission member 500 is guided to extend and retract in the first direction in the inner wheel body 420, and the second transmission member 600 is guided to slide in the second direction in the inner wheel body 420, the first direction and the second direction intersect, and one end of the first transmission member 500 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 of the outer wheel body 410 on the first transmission member 500 compresses the elastic member 700 through the second transmission member 600.

[0040] The telescopic 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, so as 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.

[0041] Through the above-mentioned arrangement, the movement of the first transmission member 500 and the preload force of the elastic member 700 are transmitted through the second transmission member 600, so that the elastic member 700 does not need to be arranged in the movement direction of the first transmission member 500, thereby reducing the superposition of the lengths of the first transmission member 500 and the elastic member 700 in the first direction, so that when the telescopic 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 in the axial direction of the inner wheel body 420 and interfere with the structure of the rotation axis of the inner wheel body 420, so that the first direction of the telescopic movement of the first transmission member 500 can 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 of the outer wheel body 410 and the inner wheel body 420.

[0042] Preferably, the first direction and the second direction cross vertically.

[0043] In one embodiment, based on the feed roller mechanism of the above embodiment, 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 interconnected. The first guide channel 421 extends along a first direction. The first transmission member 500 is slidably fitted in the first guide channel 421. One end of the first guide channel 421 that faces the transmission groove 411 passes through the surface of the inner wheel body 420 to form a first opening 423. The second transmission member 600 slides along the second direction in the second guide channel 422. The elastic member 700 is provided at one end of the second guide channel 422 that is away from the second transmission member 600. The preload force of the elastic member 700 acts on the first transmission member 500 through the second transmission member 600 so that one end of the first transmission member 500 extends out from the first opening 423 and engages with the transmission groove 411.

[0044] Under the predetermined torque, the elastic member 700 applies a preload force to the first transmission member 500 through the second transmission member 600. Under the overload torque, the force of the outer wheel body 410 on the first transmission member 500 compresses the elastic member 700 through the second transmission member 600. The force of the outer wheel body 410 on the first transmission member 500 is transmitted to the inner wheel body 420 through the contact between the first transmission member 500 and the channel wall of the first guide channel 421.

[0045] By setting the first guide channel 421 and the 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.

[0046] In this embodiment, grease is injected into the first guide channel 421 and the second guide channel 422 to reduce the friction force when the components in the first guide channel 421 and the second guide channel 422 move.

[0047] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 4 As shown, a guide stopper 425 is further provided in the first guide channel 421, and the guide stopper 425 includes a stopper portion 4251 and a guide portion 4252. The stopper portion 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 stopper portion 4251 and the channel wall on the other side of the first guide channel 421 guide the extension direction of the first transmission member 500. The guide portion 4252 extends from one end of the stopper portion 4251 away from the transmission groove 411 toward the second transmission member 600 along the second direction, and one end of the second transmission member 600 is pressed against the guide portion 4252, so that the second transmission member 600 slides along the extension direction of the guide portion 4252.

[0048] When a hole is punched on 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 second transmission member 600 to slide. By setting a guide limit member 425, a guide portion 4252 capable of guiding the second transmission member 600 to slide is set at the bottom of the first guide channel 421, thereby ensuring that the second transmission member 600 can slide along the second direction, thereby improving the connection stability between the first transmission member 500 and the second transmission member 600.

[0049] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 4 As shown, one end of the second guide channel 422 away from the second transmission member 600 penetrates the surface of the inner wheel body 420 to form a second opening 424, a rotary cover 426 is screwed on the second opening 424, and two ends of the elastic member 700 respectively abut against the rotary cover 426 and the second transmission member 600. Among them, the second opening 424 is provided with an internal thread, and the rotary cover 426 is provided with an external thread. The rotation of the rotary cover 426 can change the position of its screw connection on the second opening 424, thereby changing the preload force of the elastic member 700.

[0050] By screwing the rotary cover 426 on the second opening 424 of the second guide channel 422, the preload force of the elastic member 700 becomes adjustable, so that the predetermined torque of the feeding roller mechanism can be adjusted accordingly, thereby improving the adaptability of the feeding roller mechanism.

[0051] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 5 As shown, a guide surface 510 is provided on the side of the first transmission member 500 facing the elastic member 700, and a mating surface 610 engaging the guide surface 510 is provided on the second transmission member 600. The guide surface 510 and the mating surface 610 are inclined surfaces inclined toward the second transmission member 600 along the direction in which the first transmission member 500 extends out of the first opening 423.

[0052] Under the predetermined torque, the inclined surface of the guide surface 510 and the matching surface 610 is set so that the force of the elastic member 700 generates 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, and the inner wheel body 420 and the outer wheel body 410 rotate synchronously. Under the 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 member 700 on the second transmission member 600 through the engagement of the guide surface 510 and the matching surface 610, so that the elastic member 700 is compressed. At the same time, the guide surface 510 and the matching surface 610 can slide relative to each other, so that when the first transmission member 500 is retracted into the first guide channel 421, the second transmission member 600 is pushed to move in the direction of the elastic member 700.

[0053] Through the above arrangement, under a predetermined torque, the preload force of the elastic member 700 can be transmitted between the inner wheel body 420 and the outer wheel body 410 by pushing the first transmission member 500 to engage the transmission groove 411 through the second transmission member 600. Under an overload torque, the force of the outer wheel body 410 on the first transmission member 500 can compress the elastic member 700 through the second transmission member 600 and push the first transmission member 500 and the second transmission member 600 to move, so that the inner wheel body 420 and the outer wheel body 410 rotate relative to each other, thereby simplifying the structure of the first transmission member 500 and the second transmission member 600 and reducing the design and production costs of the feeding roller mechanism.

[0054] It is understandable that in some other embodiments, one of the guide surface 510 and the matching surface 610 may be an inclined surface inclined toward the second transmission member 600 along the direction in which the first transmission member 500 extends out of the first opening 423 .

[0055] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 5As shown, the first transmission member 500 is also provided with a first transition surface 520, and the first transition surface 520 extends obliquely from one end of the guide surface 510 to 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, and the second transition surface 620 extends obliquely from one end of the mating surface 610 to the end of the second transmission member 600 close to the transmission groove 411.

[0056] 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 matching surface 610 .

[0057] Through the above-mentioned arrangement, the contact area between the first transmission member 500 and the second transmission member 600 is increased at the initial position where they are engaged, so that the engagement between the two is more stable. At the critical point of engagement between the first transmission member 500 and the second transmission member 600, the force between the first transmission member 500 and the second transmission member 600 can be transmitted more stably.

[0058] In this embodiment, the first transition surface 520 and the guide surface 510 have an arc-shaped transition, and the second transition surface 620 and the matching surface 610 have an arc-shaped transition, so that the first transmission member 500 and the second transmission member 600 can move relatively smoothly.

[0059] It is understandable that in some other embodiments, a transition surface may be provided on one of the guide surface 510 and the matching surface 610 .

[0060] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 5 As shown, the first transmission member 500 is also provided with a first give-way surface 530, and the first give-way surface 530 is formed by extending from one end of the guide surface 510 toward the channel wall of the first guide channel 421 close to the second transmission member 600. The second transmission member 600 is also provided with a second give-way surface 630, and the second give-way surface 630 is formed by extending from one end of the mating surface 610 toward the channel wall of the first guide channel 421 close to the second transmission member 600.

[0061] The first clearance surface 530 forms a first clearance position 540 between the guide surface 510 and the channel wall of the first guide channel 421 close to the second transmission member 600. The first clearance position 540 can accommodate at least part of the second transmission member 600, thereby shortening the distance between the second transmission member 600 and the center of the first transmission member 500, so that 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, thereby reducing the loss of force transmission between the first transmission member 500 and the second transmission member 600. The second clearance surface 630 forms a second clearance position 640 between the mating surface 610 and the channel wall of the first guide channel 421 close to the second transmission member 600. The second avoidance position 640 creates a certain distance between the mating surface 610 and the channel wall of the first guide channel 421 close to 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, resulting in the guide surface 510 and the mating surface 610 being unable to engage.

[0062] Through the above-mentioned arrangement, 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, thereby 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, thereby improving the engagement stability of the first transmission member 500 and the second transmission member 600.

[0063] In this embodiment, the guide surface 510 and the first clearance surface 530 are in an arc-shaped transition, and the matching surface 610 and the second clearance surface 630 are in an arc-shaped transition.

[0064] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 4 As shown, the elastic member 700 includes a first spring 710 and a second spring 720 . The second spring 720 is sleeved in the first spring 710 . The first spring 710 and the second spring 720 rotate in opposite directions.

[0065] By providing the first spring 710 and the second spring 720, the contactable area of ​​the elastic member 700 is increased, and since the first spring 710 and the second spring 720 rotate in opposite directions, it is avoided that at least a portion of the second spring 720 is stuck in the gap of the spring strip of the first spring 710 when the first spring 710 and the second spring 720 are compressed and released, thereby improving the operating stability of the elastic member 700.

[0066] In one embodiment, based on the feed roller mechanism of the above embodiment, Figures 2 to 4As shown, a plurality of first transmission members 500 are provided, and a plurality of elastic members 700 are provided accordingly. The plurality of first transmission members 500 and the plurality of elastic members 700 are symmetrically distributed on the inner wheel body 420 in the circumferential direction.

[0067] Such an arrangement enables transmission between the inner wheel body 420 and the outer wheel body 410 to be circumferentially symmetrical, thereby improving the transmission stability between the inner wheel body 420 and the outer wheel body 410 .

[0068] In this embodiment, a plurality of second transmission members 600 and a plurality of guide channels 421 are provided correspondingly, and the plurality of second transmission members 600 and the plurality of guide channels 421 are provided correspondingly to the first transmission member 500 .

[0069] In one embodiment, based on the feed roller mechanism of the above embodiment, Figure 2 As shown, the active roller 100 and the driven roller 200 rotate in the same direction, and the linear speed of the active roller 100 is less than that of the driven roller 200. Since the active roller 100 and the driven roller 200 rotate in the same direction, the movement directions of the two are opposite at the matching working position. The active roller 100 rotates in the pushing direction of the silage material at the matching working position, and the driven roller 200 rotates in the feeding direction of the silage material at the matching working position. Since the linear speed of the driven roller 200 is greater than that of the active roller 100, the compacted silage material can be sent to the shredding mechanism at the rear end through the matching working position for shredding.

[0070] When too much silage is fed and the running resistance of the feeding roller mechanism is too large, the driven wheel 400 and the clutch wheel cut off the transmission between them under the action of the clutch transmission assembly, so that the driven roller 200 stops rotating, and the active roller 100 keeps rotating. At the same time, since the active roller 100 rotates in the pushing direction of the silage at the matching working position, the silage blocked between the active roller 100 and the driven roller 200 can be pushed out, thereby reducing the resistance between the active roller 100 and the driven roller 200, and then the driven wheel 400 and the clutch wheel can be coupled again, so that the driven roller 200 continues to rotate.

[0071] Through the above arrangement, the feeding roller mechanism can push the silage material backwards by rotating the driving wheel 300 when the silage material is blocked due to excessive feeding, so that the feeding roller mechanism can automatically push back the blocked silage material without the need for manual operation by an operator or control of the feeding roller mechanism to reverse through a control system, thereby greatly simplifying the operation of the feeding roller mechanism and the cost of the feeding roller mechanism.

[0072] In one embodiment, based on the feed roller mechanism of the above embodiment, Figure 2 As shown, the driving wheel 300 and the outer wheel body 410 are gears, and the transmission member is an annular transmission belt that transmits and connects the driving wheel 300 and the driven wheel 400. The annular transmission belt can be a chain or a synchronous belt.

[0073] In some other embodiments, the transmission member may also be an odd number of idle gears, and the odd number of idle gears are meshed between the driving wheel 300 and the driven wheel 400 .

[0074] Such an arrangement simplifies the transmission structure between the driving wheel 300 and the driven wheel 400, and reduces the cost of the transmission parts.

[0075] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A feeding roller mechanism of a silage machine, comprising a driving roller, a driven roller and a transmission assembly, wherein the transmission assembly comprises a driving wheel coaxially connected to the driving roller, a driven wheel connected to the driven roller and a transmission member connecting the driving wheel and the driven wheel, characterized in that: 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 to the driven roller, the outer wheel body is transmission-connected to the driving wheel, the inner wheel body is provided with a first transmission member and a pre-tightened elastic member, and the inner surface of the outer wheel body is provided with a transmission groove, Under a predetermined torque, the preload force of the elastic member acts on the first transmission member to make the first transmission member engage with the transmission groove, and the inner wheel body and the outer wheel body keep rotating synchronously; Under overload torque, the outer wheel body presses the first transmission member to disengage from the transmission groove, and the inner wheel body and the outer wheel body rotate relatively.

2. The feeding roller mechanism of the silo according to claim 1, characterized in that: The inner wheel body is also provided with a second transmission member, the first transmission member is guided to be extended and retracted in the inner wheel body along a first direction, 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, and one 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; Under overload torque, the force exerted by the outer wheel body on the first transmission member compresses the elastic member through the second transmission member.

3. The feeding roller mechanism of the silo according to claim 2, characterized in that: The inner wheel body is provided with a first guide channel and a second guide channel that are in communication 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 fitted in the first guide channel. The first guide channel passes through the surface of the inner wheel body toward a side of the transmission groove to form a first opening. One end of the first transmission member extends out of the first opening and engages with the transmission groove. The second transmission member slides along the second direction in the second guide channel. The elastic member is arranged at one end of the second guide channel that is away from the second transmission member.

4. The feeding roller mechanism of the silo according to claim 2, characterized in that: A guide surface is provided on a side of the first transmission member facing the elastic member, and a matching surface engaging with the guide surface is provided on the second transmission member; The guiding surface and / or the matching surface is an inclined surface inclined toward the second transmission member along the direction in which the first transmission member extends out of the first opening.

5. The feeding roller mechanism of the silo according to claim 4, characterized in that: The first transmission member is also provided with a first transition surface, which extends obliquely from one end of the guide surface to one end of the first transmission member away from the transmission groove, and / or the second transmission member is also provided with a second transition surface, which extends obliquely from one end of the mating surface to one end of the second transmission member close to the transmission groove.

6. The feeding roller mechanism of the silo according to claim 4, characterized in that: The first transmission member is also provided with a first give-way surface, which is formed by extending one end of the guide surface toward the channel wall of the first guide channel close to the second transmission member. The second transmission member is also provided with a second give-way surface, which is formed by extending one end of the mating surface toward the channel wall of the first guide channel close to the second transmission member.

7. The feeding roller mechanism of the silo according to claim 3, characterized in that: One end of the second guide channel away from the second transmission member passes through the surface of the inner wheel body to form a second opening, a rotary cover is screwed on the second opening, and two ends of the elastic member respectively abut against the rotary cover and the second transmission member.

8. The feeding roller mechanism of the silo according to claim 1, characterized in that: There are a plurality of the first transmission members, and there are a plurality of the elastic members correspondingly. The plurality of the first transmission members and the plurality of the elastic members are symmetrically distributed on the inner wheel body in the circumferential direction.

9. The feeding roller mechanism of the silo according to claim 1, characterized in that: The elastic member includes a first spring and a second spring, the second spring is sleeved in the first spring, and the first spring and the second spring rotate in opposite directions.

10. The feeding roller mechanism of the silo according to claim 1, characterized in that: The active roller and the driven roller rotate in the same direction, and the linear speed of the active roller is lower than the linear speed of the driven roller.

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