公开(公告)号：US5531062A

公开(公告)日：1996-07-02

申请号：US402672

申请日：1995-03-13

申请人： Ernest Pfrimmer

发明人： Ernest Pfrimmer

IPC分类号： A01D43/10 ,  B02C4/32 ,  A01D82/00

CPC分类号： A01D43/10 ,  B02C4/32 ,  Y10S56/01

摘要： A mower conditioner includes parallel upper and lower conditioning rolls with the upper roll having opposite ends respectively rotatably mounted in a pair of vertically swingable arms and thereby being moveable toward and away from the lower roll. Associated with each arm is a tensioning mechanism including a lever having its lower end pivotally mounted at a location just below a lower forward location of the upper roll when the latter is in a lowermost initial position. A rearwardly acting biasing element is attached to the upper end of the lever for yieldably urging the latter rearwardly. Mounted to the lever between its upper and lower ends is a cam follower which is located in contact with a cam mounted to the forward end of the roll support arm. The geometrical relationship between the follower and first and second contact surfaces of the cam is such that, as the upper roll is forced upward away from the lower roll in increasing amounts in a normal range of movement by crop material or foreign objects passing between the rolls, the follower will be in contact with the first contact surface and the biasing element will be increasingly loaded so as to resist such movement of the upper roll and such as to increase the pressure exerted by the crop material or foreign object on the rolls; and such that, as the upper roll is forced upward into an abnormal range of movement beyond the normal range, the follower will be in contact with the second contact surface and little or no increase in the load exerted by the biasing element and little or no increase in the pressure acting between the rolls will be experienced.

摘要翻译： 割草机调节器包括平行的上下调节辊，上辊具有相对的端部，分别可旋转地安装在一对垂直摆动的臂中，从而能够朝向和远离下辊移动。 与每个臂相关联的是张紧机构，其包括杠杆，当杠杆处于最低初始位置时，杠杆的下端可枢转地安装在位于上辊的下向前位置的位置处。 向后作用的偏置元件附接到杠杆的上端，用于可靠地向后推动后杠杆。 安装到其上端和下端之间的杠杆的是凸轮从动件，其位于与安装到辊支撑臂的前端的凸轮接触。 凸轮的从动件与第一和第二接触表面之间的几何关系使得当上辊在正常的运动范围内由作物材料或通过辊之间的异物以较大的量向下远离下辊时 随动件将与第一接触表面接触并且偏置元件将被越来越多地加载，以便抵抗上辊的这种移动，并且增加作物材料或异物施加在辊上的压力; 并且使得当上辊被迫向上进入超出正常范围的异常运动范围时，从动件将与第二接触表面接触，并且由偏置元件施加的负载很少或没有增加，很少或没有 将经历在辊之间作用的压力的增加。

公开(公告)号：US5070780A

公开(公告)日：1991-12-10

申请号：US524618

申请日：1990-05-17

申请人： Jean Viaud ,  Arsene Roth ,  Henry D. Anstey ,  Ernest Pfrimmer

发明人： Jean Viaud ,  Arsene Roth ,  Henry D. Anstey ,  Ernest Pfrimmer

IPC分类号： A01F15/07

CPC分类号： A01F15/07 ,  A01F2015/078 ,  A01F2015/0795

摘要： The baling chamber of one type of round baler is defined by belts which are trained over rolls connected to a drive. Stones can enter the nip formed between the belts and some of the rolls, e.g., a lower front belt driving roll, and thereby cause poor tracking of the belts. To reduce the problem, a shield device is snap-fit mounted on the roll. The device includes a nip bridging plate an upright portion of which abuts the belt run advancing to the nip and a downwardly sloping lower portion of which bridges the nip. Thus the device covers the nip preventing access to it by the stones, and stones which fall upon it slide down the sloping portion of the plate eventually to find their way harmlessly to the ground.

公开(公告)号：US4993217A

公开(公告)日：1991-02-19

申请号：US465866

申请日：1990-01-16

申请人： Ernest Pfrimmer ,  Raymond Bertrand

发明人： Ernest Pfrimmer ,  Raymond Bertrand

IPC分类号： A01F15/10

CPC分类号： A01F15/106

摘要： A baler for forming large cylindrical bales of crop material has a baling chamber in which the crop is rolled into a bale by oppositely moving runs of side-by-side belts. A windrow of crop material is fed through an inlet of the baling chamber by a pick-up which lifts the windrow of crop and delivers the same to a feeder fork mechanism which in turn moves the crop into the inlet. Crop enters the baling chamber between a roll, over which the belts are trained, and a growing bale core. In order to reduce plugging of the crop at the inlet, the roll has discs rigidly mounted on it between neighboring belts. These discs each have an outer edge which is approximately sinusoidal in configuration and the peaks of the undulations extend outwardly beyond the thickness of the belts. The effect of the discs is both to grip the crop better and to raise the bale core slightly to provide easier access to the chamber for the crop.