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CN-121986661-A - Pull-in device with relatively movable cover element for covering a roller recess

CN121986661ACN 121986661 ACN121986661 ACN 121986661ACN-121986661-A

Abstract

The invention relates to a pull-in device for a field grinder for conveying agricultural harvesters in a pull-in direction through a pull-in channel, comprising a frame device, comprising at least one side wall for laterally delimiting the pull-in channel, at least two pull-in roller pairs for delimiting the pull-in channel, each comprising a rotatably supported upper roller element and a rotatably supported lower roller element, the upper roller element extending laterally through at least one roller recess in the side wall and the pull-in rollers being arranged offset to one another in the pull-in direction, a support device, which is designed for supporting the upper roller element so that it can be moved in the height direction, a cover device, comprising at least one cover element which can be moved relative to the frame device by the support device, for covering the at least one roller recess, wherein the cover device comprises at least one wiping cover element for covering the at least one roller recess, is mounted relative to the frame device by the support device and can be moved relative to the cover element.

Inventors

  • Hendrik Evers
  • Holger Ensink

Assignees

  • 伯纳德克朗机械有限责任及合伙两合公司

Dates

Publication Date
20260508
Application Date
20251103
Priority Date
20241107

Claims (16)

  1. 1. A pull-in device (2) for a field pulverizer for conveying agricultural harvesters in a pull-in direction (ER) through a pull-in channel (4), comprising: a frame device (40) comprising at least one side wall (42) for laterally delimiting the pull-in channel (4), At least two pull-in roller pairs (10, 20, 30) for delimiting a pull-in channel and each comprising a rotatably mounted upper roller element (12, 22, 32) which extends laterally through at least one roller recess (13, 23, 33) in a side wall (42) and a rotatably mounted lower roller element (14, 24, 34) and which are arranged offset from one another in a pull-in direction (ER), A support device (50) which is designed to support the upper roller element (12, 22, 32) in such a way that it can be moved at least partially in a height direction (HR) which is at an angle to the pull-in direction (ER) in order to change the height of the pull-in channel (4) relative to the frame device (40), and A cover device (60) comprising at least one cover element (62, 64) which is movable relative to the frame device (40) by means of a support device (50) for covering at least a part of at least one roller groove (13, 23, 33), It is characterized in that the method comprises the steps of, The cover device (60) further comprises at least one wiping cover element (66) for covering the at least one roller groove (13, 23, 33), which wiping cover element is movably mounted with respect to the frame device (40) and with respect to the cover element (62, 64) by means of the bearing device (50).
  2. 2. The pull-in device (2) according to any one of the preceding claims, characterized in that the support device (50) is configured such that the movement of the wiping cover element (66) at least partially in the height direction (HR) takes place in dependence on the movement of at least one of the upper roller elements (12, 22, 32) at least partially in the height direction (HR).
  3. 3. The pull-in device (2) according to any one of the preceding claims, wherein the support device (50) is configured for decelerating the movement of the at least one upper roller element (12, 22, 32) such that, in operation, a movement of the at least one upper roller element (12, 22, 32) by a first distance (S22) causes a movement of the wiping cover element (66) by a second distance (S66) which is smaller than the first distance (S22).
  4. 4. Pull-in device (2) according to any one of the preceding claims, wherein the support device (50) is configured for deceleration such that, in operation, the second distance (S66) by which the wiping cover element (66) is moved is greater than half the first distance (S22) by which the at least one upper roller element (22) is moved.
  5. 5. The pull-in device (2) according to any one of the preceding claims, wherein the support means (50) for supporting the wiping cover element (66) comprises: A linkage (56) comprising a first link (57), a second link (58) and a third link (59), Wherein one end of the first link (57) is mounted on the frame device (40) and the other end is mounted on the second link (58), one end of the third link (59) is mounted on the second link (58) and the other end is mounted on a swinging member (52) on which at least one of the upper roller members (12, 22, 32) is rotatably supported, and the wiping cover member (66) is provided on the second link (58) between the first link (57) and the third link (59).
  6. 6. Pull-in device (2) according to any one of the preceding claims, wherein the cover device (60) comprises a sensor for monitoring the position of at least part of the assembly of the support device (50), at least one of the upper roller elements (12, 22, 32) and/or the cover element (62, 64), and an actuator for setting the position of the wiping cover element (66) as a function of the monitored position.
  7. 7. The pull-in device (2) according to any one of the preceding claims, wherein the wiping cover element (66) is provided for covering a first roller groove (13), a second roller groove (23), in particular a third roller groove (33).
  8. 8. Pull-in device (2) according to any one of the preceding claims, characterized in that the wiping cover element (66) has at least one additional roller groove (65) such that at least one of the upper roller elements (12, 22, 32) is movable in the height direction (HR) relative to the wiping cover element (66) inside the additional roller groove (65).
  9. 9. Pull-in device (2) according to any one of the preceding claims, characterized in that the wiping cover element (66) and/or the at least one cover element (62, 64) are arranged in a transverse direction (QR) perpendicular to the pull-in direction (ER), between the pull-in channel (4) and the side wall (42).
  10. 10. Pull-in device (2) according to any one of the preceding claims, wherein the wiping cover element (66) is arranged in a transverse direction (QR) perpendicular to the pull-in direction (ER), between the at least one cover element (62, 64) and the pull-in channel (4).
  11. 11. Pull-in device (2) according to one of the preceding claims, characterized in that the support device (50) comprises a guide device for guiding the movement of the wiper cap element (66) in the height direction (HR), wherein the guide device comprises at least one, in particular two guide elements (67), which are arranged on the wiper cap element (66) and extend inside or through a wiper cap element recess (63) in the side wall (42).
  12. 12. Pull-in device (2) according to any one of the preceding claims, characterized in that the support means (50) for supporting the upper roller element (12, 22, 32) comprise at least one first swinging element (52) which supports the upper roller element (12, 22, 32) and allows it to rotate, and one second swinging element (54) which is capable of swinging on the frame means (40) as well as about the Swinging Axis (SA) of the first swinging element (52).
  13. 13. Pull-in device (2) according to any one of the preceding claims, wherein the cover device (60) has a first cover element (62) for covering the first roller recess (13) and a second cover element (64) for covering the second roller recess (23), in particular also for covering the third roller recess (33).
  14. 14. Pull-in device (2) according to any one of the preceding claims, characterized in that between the pull-in channel (4) and the at least one cover element (62, 64) and/or the wiping cover element (66) there is provided a guide element (68) fixed relative to the frame device (40), which extends between the upper roller element (12, 22, 32) and the lower roller element (14, 24, 34) in the pull-in direction (ER).
  15. 15. Pull-in device (2) according to any one of the preceding claims, characterized in that the guide element (68) has a transverse guide section (69) at the entrance of the pull-in channel, which extends in the transverse direction (QR) away from the pull-in channel (4) and which at least partially overhangs the wiping cover element (66), the at least one cover element (62, 64) and/or the side wall (42).
  16. 16. Pull-in device (2) according to any one of the preceding claims, characterized in that the wiping cover element (66) and/or the guide element (68) has at least one concave recess (70), in particular one for each lower roller element (14, 24, 34), in at least one position of the support device (50) at least a part of one of the lower roller elements (14, 24, 34) being arranged in the concave recess.

Description

Pull-in device with relatively movable cover element for covering a roller recess Technical Field The invention relates to a pulling-in device for a field pulverizer. The pull-in device is configured for transporting the agricultural harvest through the pull-in channel in a pull-in direction. The pull-in device has a frame device which comprises at least one side wall for laterally delimiting the pull-in channel. The pull-in device further has at least two pull-in roller pairs for delimiting the pull-in channel and each comprising a rotatably mounted upper roller element and a rotatably mounted lower roller element, and the pull-in roller pairs being arranged offset from one another in the pull-in direction. The upper roller element extends laterally through at least one roller groove in the side wall. The pull-in device also has a support device which is designed to support the upper roller elements in such a way that they can be moved at least partially in a height direction, which is at an angle to the pull-in direction, in order to change the height of the pull-in channel relative to the frame device. The pull-in device further comprises a cover device having at least one cover element which can be moved relative to the frame device by means of the support device, for covering the at least one roller recess. Background Such pull-in devices are well known in the art. In use, the pulling device is used to pull the harvest from a harvesting attachment coupled to the field pulverizer into the field pulverizer and to transport the harvest to the pulverizing bowl. The variable height of the pull-in channel enables the same reliable transport of different amounts of harvest and in particular enables the harvest to be transported reliably to the comminution drum for different cut lengths at different transport speeds and with it different thicknesses of the harvest stream in the pull-in channel. The movability of the upper roller elements presets roller grooves having a larger cross section than the portions of the respective upper roller elements located therein. Thus, there must be passage openings between the pull-in passage and the surroundings of the side wall, through which passage openings a part of the harvest to be transported can escape from the pull-in passage in practice unexpectedly. In order to reduce such escape of harvest, for example, according to DE 2 149 974 A1, a plurality of cover elements of the cover device are provided, wherein each upper roller element corresponds to a cover element such that the cover element moves at least partially in the height direction with the respective upper roller element. A disadvantage of the known pull-in device is that the roller recess is not adequately covered by the cover device. Despite the provision of the cover means, a considerable proportion of the harvest always escapes from the pull-in channel during operation. This aspect leads to serious contamination of the functional components, in particular the bearings, and increases the risk of failure thereof. On the other hand, escape of harvest results in a significant decrease in harvest yield. The above-mentioned drawbacks are particularly pronounced when the upper roller element has a large range of movement in the height direction, in particular because the extension of the cover element in the direction opposite to the height direction is limited by the corresponding lower roller element. However, a larger range of movement is becoming more and more important, since, depending on the harvest and its use, it is necessary to achieve, on the one hand, a particularly short cut length and, on the other hand, a particularly long cut length. Disclosure of Invention The object of the present invention is to provide a pull-in device by means of which contamination of functional parts and/or loss of harvest can be reliably prevented, in particular in the case of relatively large displacement capacities of the upper roller element. According to the invention, this object is achieved in that the cover device comprises at least one wiping cover element for covering the at least one roller recess, which wiping cover element is mounted by means of a mounting device so as to be movable relative to the frame device and relative to the cover element. The wiping cover element can cover the uncovered or uncovered roller groove sections of the cover element depending on the position of the support device. In particular, the position at which such a section is produced can be responded to by the support means and the wiper cap element can be positioned as desired to prevent loss of harvest depending on the position of the support means. The pull-in device constitutes, in use, a so-called feeding mechanism of the field pulverizer. In the installed state, the pull-in device is located between the front wheels in a front view of the field pulverizer. The pull-in device is particularly suitable for transporting corn, pastu