FR2643216A1 - DEVICE FOR ADJUSTING THE TRAP AND SEPARATION BASKET, ESPECIALLY IN AXIAL FLOWER HARVESTERS - Google Patents

Abstract

Device characterized in that the threshing and separating basket 3 consists of two basket halves 16, 17 connected to the frame of the machine by means of two adjustment elements 8, 9 sliding inside guide sleeves 12, 13 hinged to the threshing and separating basket 3, the adjusting elements 8, 9 are arranged in an approximately vertical position and, on the discharge side, inclined at an angle of approximately 20degre (s) relative to the vertical. The invention relates to a device for adjusting the threshing and separating basket, in particular in combines with axial flow.

Description

"Setting device for the threshing basket and

  separation, particularly in reapers

  The invention relates to a device for adjusting the threshing and separating basket of axial flow combines, in which the inlet side and the discharge of the threshing and separating basket are adjustable. the threshing and separating basket is mounted eccentrically with respect to the threshing and separating drum, its position being changeable

  through adjusting elements, the corbeil-

  threshing and separation being surrounded, in the upper zone, by a closed casing and, in the zone

  lower part of the threshing and separating basket.

  on a wrapping angle of about 180.

  Adjusters for the threshing and separating basket are already known in

  different embodiments on reapers

Axial flow threshing machines.

  For example, in DE-PS 29 50 722 there is shown an adjusting device for the threshing bin, in which it is subdivided into four segments extending all around the threshing rotor. The trash segments of

  individual threshing are adjustable in relation to the

  threshing, in a roughly radial direction,

  by means of a setting device, the upper parts

  upper and lower of the threshing basket being jointly adjustable by means of a mechanical linkage. The adjustment is made so that the radial distance between the inner surface of the two half-caster halves and the threshing rotor is approximately the same value at any position on the whole periphery. As a result, on the inlet side of the threshing bin, a separation is obtained.

  of the harvested product only on the evacuated side

  tion. Because, in addition, the separation effect decreases as the wrapping angle increases in

  the case of a concentric annular gap, the

  positive downstream associated cleaning is solicited

irregularly across the width.

  In addition, document DE-OS 31 40 143 discloses a device for adjusting the basket of

  threshing, in which the threshing basket is

  automatically in both the inlet and the evacuation side. One of the suspensions is adjustable in relation to the basket of

  threshing, substantially in the lateral direction and radially

  the, and the other suspension is adjustable in height and tangential direction. In the case of this embodiment, the threshing basket is made

  rigid and in one piece and has an angle of

  development of about 110 '. Respect for an

  The threshing technique, which is reduced to a wedge shape during adjustment, is only possible in this wrapping area. Beyond this zone, the respect of a geometry of a threshing gap that is advantageous for the threshing and separating process is not possible over the entire enveloping zone. The object of the invention is to increase the efficiency of separation and cleaning in the

  case of an axial flow combine harvester.

  The object of the invention is to design the adjustment device for the threshing and separating basket so that the threshing gap is reduced in wedge shape in any setting position over the entire basket area. from the inlet side to the evacuation side, and to obtain a regular distribution of the separated harvested product over the entire width of the transfer bottom and the device

of cleaning.

  According to the invention, this is solved by the following properties: a) The threshing and separating basket consists of two basket halves interconnected in a hinged manner on a longitudinally extending connection location, b) in the zone front and rear, the threshing and separating basket is each connected to the frame of the machine by means of two adjusting elements, c) the adjusting elements sliding inside guide bushes are hingedly fixed. to the threshing and separating basket, (d) the guide bushes are rigidly connected to the machine frame, (e) on the inlet side of the threshing and separating basket, the adjusting elements are arranged

  approximately vertical position and, on the

  cuation, inclined at an angle of approximately 20 '

compared to the vertical.

  According to another characteristic of the invention

  the adjustment elements are made in the form of mechanically acting lever linkages,

  of screw drives powered by electric motors

  that or mechanically, or in the form of jacks

pneumatic or hydraulic.

  The adjustment device according to the invention for the threshing and separating basket, allows, for a wrapping angle of about 180, a suitable setting of the threshing gap for threshing different types of harvested products. and

  an adaptation to the respective harvest conditions.

  Because the threshing gap decreases approximately wedge-shaped for all positions set in the entire wrapping zone, from the inlet side to the evacuation side, it follows an adaptation to the given distribution of the amount of product

  harvested, so that high efficiency is achieved.

  threshing and separation and that the bottom of

  transfer located below the basket of

  and separation, and the auxiliary cleaning device are solicited regularly across the width by the harvested product. Whereas, in the case of a joint threshing gap at a

  constant or increasing distance, the degree of separation

  of the harvested product decreases, from the inlet side to the evacuation side, and consequently the mass distribution on the transfer bottom and on the device.

  cleaning also decreases along the width, separation

  The reduction in the threshing gap throughout the whole area of wrapping of the basket and threshing and separation remains approximately constant. Due to this regular and intensive feature of separation in the whole area of the basket and in addition to the regular distribution

  of the harvested, beaten and separated product on the

  tif of cleaning, the effectiveness of the latter is 3 5

also increased.

  An exemplary embodiment of the invention is explained below in more detail and shown in the drawings, in which: FIG. 1 represents a transverse cross-section;

  dirty in the threshing area of the batting basket.

age and separation.

  FIG. 2 represents a cross-section

  dirty in the separation area of the trash

threshing and separation.

  In an axial flow combine harvester, not shown in the drawing, the harvested product arrives from the cutting apparatus via

  of an introductory channel, in the basket of

  age and separation 1 which is surrounded, on the upper

  by a closed semi-cylindrical housing 2 and,

  lower side, by a basket of threshing and drying

  3. The inner side of the housing 2 is provided with guide strips 4 extending inclined with respect to the direction of axial transfer. Bands of

  threshing 5 arranged straight with strips of separa-

  6 intermediates arranged in helical lines

  are attached to the periphery of the battery basket.

  1. The rotation and separation

  the product harvested between the

  Pa tage 5 and the threshing and separating basket 3 is effected during the transfer movement. In the straw discharge zone, it is extracted on the transfer bottom, by the centrifugal forces acting on the threshing and separating basket.

  1, passing through man-made straw guide channels

  laterally. The short grain-ball-straw mixture separated on the threshing and separating basket 3 arrives on a transfer bottom 7 disposed below, going to the cleaning device. Both the casing 2 and the threshing and separating basket 3 each have a wrapping angle of approximately 180. In the front and rear zone, the threshing and separating basket 3 is each time connected to the upper supports 10, 11 of the machine frame, by means of two adjustment elements 8, 9 which can be made in the form of linkage with levers, screw drives powered by electric motor or mechanically, or made in the form of pneumatic or hydraulic cylinders. The adjusting elements 8, 9 arranged sliding inside the

  guide sleeves 12, 13 are

  on a flange of threshing and drying baskets

  3, by means of bolts 14, 15. The guide bushes 12, 13 are rigidly connected to the upper supports 10, 11 of the frame of the machine. The threshing and separating basket 3 consists of

  two basket halves 16, 17 which are connected together

  they are articulated on a connecting location 18 extending longitudinally. The adjustment elements 8 are arranged in approximately

  vertical on the entry side of the half of basket 16.

  When actuated, this basket half 16 is moved up or down in the vertical plane determined by the adjusting elements 8. On the evacuation side, which is located opposite, half

  of basket 17, the adjustment elements 9 are

  so that their senses of action are inclined

  at an angle of approximately 20 to the vertical

  down. Due to this arrangement, during each adjustment movement, a threshing gap narrowing approximately evenly in the

  direction of rotation of the threshing and drying basket

  1. The inlet side of the threshing basket 3 is provided with an optimum setting which is predominantly retained under normal harvesting conditions. This side is adjusted only under extreme conditions of the product to be harvested.

  as well as in the case of harvesting special crops

  the. The modification of the width of the threshing gap which has become necessary each time is undertaken by the adjustment of the discharge side of the threshing and separating basket 3. The distances produced between the casing 2 and the threshing and separating basket 3 because of the setting of the trash

  threshing and separating 3 are bridged on the

  2, which is extended and which presses on the inner face of the basket, and on the evacuation side connection by flexible overlaps or

  elastic strips 19 fixed on the upper face of the flanges.

  basket. Dressings 22, 23 are arranged between the lower supports 20, 21 and the upper supports 10, 11 of the frame of the machine. The transfer base 7 is sealingly insulated from the

  wraps 22, 23 by means of flexible strips 24, 25.

  The direction of rotation of the threshing bin and

  separation i is indicated by an arrow.

2 6 4 3 2 1 6

Claims (2)

R E V E N D I C A T IONS   (1) Axial flow combine threshing and separating basket control device in which the inlet and outlet sides of the threshing and separating basket are adjustable independently of one another and threshing and separating basket is mounted eccentrically with respect to the threshing and separating drum, its   position being modifiable through   setting, the threshing and separating basket   being surrounded, in the upper zone, by a closed casing and, in the lower zone of the threshing and separating basket, on a wrapping angle of approximately 180, characterized by the following properties: threshing and separating basket (3) consists of two basket halves (16, 17)   linked together in an articulated manner on a   longitudinally extending connecting arrangement, b) in the front and rear zone, the threshing and separating basket (3) is each connected to the frame of the machine by means of two adjusting elements (8, 9) ,   c) the adjusting elements (8, 9) sliding inside the   of guide bushes (12, 13) are hingedly attached to the threshing and separating basket (3),   d) the guide bushes (12, 13) are rigidly connected   (e) on the inlet side of the threshing and separating basket (3), the adjusting elements (8, 9) are arranged in a substantially vertical position and, on the discharge side, inclined under a angle of just   near 20 to the vertical.   2) Device according to claim 1,   characterized in that the adjusting elements (8, 9) are in the form of lever linkages   acting mechanically, with screw-action   born by electric motor or mechanically, or under   the shape of pneumatic or hydraulic cylinders.