DE2111227A1 - Harvester - Google Patents

Description

f ".... K ^: - i Delis

Dv. v ^l - Her Moil 9 1119 9 7

70 08 349

A-8

Etablissements Braud, Boulvard de! 'Industrie, 49-Angers, France

Harvester

The invention relates to a combine harvester. Combine harvesters are already known in which the attachment or the cutting unit, to which the reel and the cutting unit of the combine belong, automatically to the housing of the Lifting conveyor can be coupled to the front part of the combine harvester under the action of a suitable drive element, for example a hydraulic cylinder, is mounted pivotably about a horizontal axis which is arranged transversely with respect to the longitudinal extension of the combine harvester Machine consists of the attachment on the housing for the mower from two pairs of complementary coupling organs, such as pins and. with these for engagement bringable hook; the two pairs complement each other

Coupling organs are arranged on the opposite vertical sides of the housing and an opening in the rear wall of the attachment; one of the two complementary coupling organs of each pair is carried on the housing, while the other, this associated coupling organ of each pair is carried on the attachment, and said complementary coupling organs prevent the axial movements of the attachment with respect to the housing downwards , however, allow an upward movement of the attachment with respect to the housing, so that the mentioned coupling elements can be brought into engagement or disengaged under the action of a movement of the housing with respect to the attachment upwards or downwards under the action of the said drive element ; the system of coupling the attachment to the housing of the lifting conveyor also has locking means mounted on the attachment or on the housing at a certain distance below the said, complementary coupling elements, which are formed, for example, by a pin and a pivotable hook that is connected to the said pin is able to cooperate in such a way that displacements of the attachment with respect to the housing are prevented upwards. In this manner, the attachment may be coupled to the housing by the drive organ above is operated such that it pivots, the housing upwardly and thus the coupling organs of the housing brings sum engagement with the complementary coupling these organs of intent.

The housing can correspondingly be decoupled from the attachment by actuating said drive member with the locking means unlocked in such a way that it touches the housing pivots down until the attachment is placed on a support, for example its transport chassis whereupon the housing is further lowered with respect to the attachment, so that the coupling organs of the housing with the additional coupling organs of the attachment disengage «all Coupling and locking elements according to this description are known. About the coupling of the attachment to the housing To automate the lifting conveyor and the locking of the coupling, it has already been proposed to use the locking hook to be connected to an actuation or control linkage, which is from the driver's platform of the machine can be operated by hand or foot or from the said driver platform by means of a hydraulic or electric between the drive element can be controlled hydraulically or electrically by remote control.

In addition, a combine harvester is known in which a rotatably driven, transversely directed output shaft is attached to the housing is carried, which protrudes laterally over one of the side walls of the housing of the elevator addition and at "» attachment coupled to the housing of the hoist conveyor with the input shaft of the attachment is axially aligned, which is used to transmit the driving force to the organs of the attachment

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as well as other organs to be driven by the resolution. To couple the said output shaft to the input shaft, it has already been proposed to provide a claw coupling at the opposite ends of these two shafts, which consists of two coupling stems or plates which 'have teeth or claws on their surfaces facing each other that engage or engage with each other Can be disengaged by the coupling half carried on the output shaft not only being non-rotatably mounted but also axially displaceable on the output shaft is mounted pivotably about an axis at right angles to the output shaft and whose arms each carry a finger or a roller which engages in a circumferential radial groove of the sliding coupling half and which actuates by hand from the driver's platform of the combine harvester gable or hydraulically or electrically operated actuating or control devices about the said axis at right angles to the axis of the shafts, which can be operated remotely from the driver's platform. The actuation or control means for coupling the input shaft with the output

109840 / $ 11 *

Output shafts are generally different from those for locking the coupling between the attachment and the housing of the lifting conveyor provided so that the operating activities that the driver of the combine harvester has to perform, Getting complicated «In addition, it is necessary to adhere to the sequence of the activities to be carried out and to make a selection • the one to carry out the Ankoppeins of the attachment to the Housing of the lifting conveyor organs to be actuated on the part of the driver certain considerations «

In addition, in the majority of combine harvesters, certain elements of the attachment are hydraulically driven. This applies for example the swivel arms that carry the reel, the height of which can be regulated by hydraulic cylinders provided pressure medium source is supplied with pressure medium, so that when the attachment is coupled to the housing, the lifting frame and the hydraulic lines of the attachment with which the · combine harvester must be connected «With the known combine harvesters, the ··· connect 4-way print parts! after coupling the attachment to the housing Hubförderefe made by hand «As a result, that is Coupling of the attachment to the housing is not fully automatic! -

eggs _? and! the driver is therefore forced to leave the driver's platform in order to connect the hydraulic lines by hand.

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It is therefore the object of the invention in the first place to eliminate these drawbacks by creating a self-propelled combine harvester in order to. . the docking or hitching and the locking of the coupling of the cutting units or header to the housing of the lifting conveyor by remote control to be carried out automatically from the driver's platform of the combine harvester with the help of simpler control or actuation elements, the mode of operation of which is more reliable than that corresponding facilities on known combine harvesters "

The invention also provides a combine harvester in which the coupling of the output shaft carried on the housing and the input shaft carried on the cutting unit can be actuated by the same control device or "actuating device that is also used to lock the coupling between the header and the housing"

The invention also provides a wheeled combine harvester self-propelled, in which the connection of the hydraulic Leads of header - to those of one on the combine provided pressure medium source coming pressure medium feed lines through the same control or »actuating device can be operated 1st, which also locks the coupling is used between the attachment and the housing and for coupling the input shaft and the output shaft.

1 0 9 8 A 0/118 4 originally inspected

To solve this problem, the invention is based on
a mobile, self-propelled combine harvester, with one
frame mounted on wheels, a longitudinal lifting conveyor which is accommodated in a housing mounted on the front part of the frame of the machine so as to be pivotable about a transverse, horizontal axis, first drive means which can be remotely controlled from the operator's platform of the machine
for pivoting the housing about its pivot axis, a cutting mechanism or an attachment, which is carried out by means of complementary elements carried on the attachment or on the housing when the housing is pivoted in relation to the attachment from below
upwards or from top to bottom for engagement or out of action
Coupling organs that can be brought into engagement can be coupled to the housing or decoupled from it, the attachment on
a fixed support device is supported, with
at least two complementary locking devices,
one of which is carried on the housing and the other on the attachment and which prevent a displacement of the attachment with respect to the housing upwards after coupling and of which the locking member carried on the housing
is pivotably mounted on this in such a way that it can optionally be brought into engagement with the locking member carried on the attachment or is detachable therefrom, control or operating members connected to the pivotable locking member and a second drive member which comes from the driver's platform of the combine harvester can be remote controlled and tnit

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the control or ο operating elements is connected.

The stated object is achieved in that the control and operating elements are driven by an eccentric drive with a Lever and a handlebar are formed, of which the former with respect to the housing about a to the pivot axis of the pivotable locking member parallel pivot axis pivotably mounted and with the piston rod of a das second drive member forming, double-acting hydraulic cylinder is connected, and of which the latter, the Handlebar, with its one end on the pivotable locking member or on an organ non-rotatably connected to this pivotable locking member and with its other end End is hinged to the pivot lever at a point thereof which is from the pivot point of the lever on the housing is arranged at a distance that the pivot lever, the handlebar and the pivotable locking member in such Are designed so that in the course of the pivoting movement of the lever in the sense of locking the pivot point of the handlebar on the pivoting lever passes a dead center just before said pivoting lever hits a stop comes to a standstill, which forms the end of the locking section, so that in the locked position after being exceeded of the dead center, any movement of the attachment with respect to

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is excluded on the housing upwards, since such a movement on the pivotable locking member and the Handlebar is transferred to the pivot lever of the lock and seeks to reinforce this lever the holding effect exerted on the pivot lever by said stop forming the end of the locking section to pivot.

Incidentally, in a preferred embodiment, the Invention of the handlebars of the eccentric drive, adjustable in length be, and the length of the handlebar can be regulated so that in the course of the pivoting movement of the lever in the sense of locking the mutually associated locking members come into engagement with one another just before the pivot point the handlebar on the pivot lever overcomes the dead center, so that the hydraulic cylinder has to overcome a resistance, in order to pivot the said lever further in order to over- ■ to cause the dead center to step and move it to its position corresponding to the end of the locking distance to bring, so that a reliable locking is achieved, even if pressure medium losses after the locking has taken place in the hydraulic cylinder or malfunctions in the pressure medium supply to this occur "

Also in a preferred embodiment of the combine harvester according to the invention, in which for coupling the input shaft of the attachment with a rotatably driven,

- 9 -inOfl A n / 1104.

carried on the housing and aligned with said input shaft when the header is coupled to the housing Output shaft and with a control or actuating device with a pivotable fork for moving the Coupling half carried by the output shaft in the Axial direction along this to establish the engagement or, overcoming the action of a return spring, to The actuation or control device has the task of releasing the engagement of the coupling half carried on the input shaft the pivotable fork also has a first lever arm rotatably connected to the pivotable fork, one with the pivotable locking member rotatably connected second lever arm and a link, one end of which with the free end of the first and the other end with the free end of the second lever arm is connected. The two clutch halves or clutch disks are interacting with each other Equipped teeth or claws, which preferably have a trapezoidal profile, so that they work together allow the return spring to limit the torque transmitted via the dog clutch in such a way that that, when the torque exceeds a predetermined value, the teeth against each other, against the force of the return spring, push each other back. Under these circumstances, the handlebar is preferably with one of the two lever arms connected by a tenon and shaft joint that allows a sufficient backlash between the handlebar and the relevant lever arm, so that the pivoting movement

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of the first lever arm not over the handlebar on the second Lever arm is transmitted when the torque is the predetermined Value and the teeth push each other apart and the fork of the clutch vers to pan

Also according to a preferred embodiment of the combine harvester according to the invention, in which at least one Pair of hydraulic connections for connecting the pressure medium lines of the attachment with a pressure medium feed line, which is connected to a pressure medium source provided on the machine is provided, the one pressure medium connection is carried on the attachment and the other on the housing in such positions that they are at the housing coupled header are aligned with respect to each other, and the connector carried on the housing is at an in with respect to the housing in the direction of the common axis of alignment of the two terminals slidable support mounted, and a control or «actuation mechanism is with the sliding support and the pivot lever of the eccentric drive for connecting the connector carried by the sliding bracket to the other connector upon actuation of the mentioned swivel lever by the hydraulic cylinder in the sense of locking or disconnecting the connections Actuation of the swivel lever connected in the sense of unlocking

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Thanks to the invention, the coupling of the header to the housing of the lifting conveyor of the combine harvester, the locking of the coupling devices, the coupling of the Housing-borne output shaft with the input shaft of the attachment and connecting the hydraulic lines of the Intention with those of the combine can be carried out completely automatically without the driver having to leave the driver's platform of the combine. Otherwise take place locking the coupling, coupling the input shaft to the output shaft and connecting the hydraulic Lines with the help of a single double-acting hydraulic cylinder, which is operated from the operator's platform of the combine can be operated remotely by means of a single control element, so that the control of the above-mentioned activities is largely facilitated in an advantageous manner and any source of error is off, which arises from the need to perform a certain sequence of operations to be observed

Xn of the drawing and preferred embodiments of the Invention illustrated by way of example.

Fig. 1 is a view of the front part of a combine harvester before coupling his header or cutting device ·· to the housing of his lifting conveyor j

Fig. 2 is a view similar to Fig. 1 after the attachment has been coupled to the housing;

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3 is a partial view from above on a larger scale to illustrate the locking devices that are used in the system of coupling the header to the Housing are provided}

FIG. K is a partial view on a larger scale to illustrate the locking elements and the control or operating elements connected to them in the inoperative position and to illustrate a part of the dog clutch with its 'actuating elements'

FIG. 5 is a representation similar to FIG. K to illustrate the mentioned locking elements and actuating elements in their working position as well as the claw coupling! also in the working position}

Figure "6 is a view in the k by the arrow F in FIG · marked sight}

Fig. 7

a view similar to FIG · k for illustrating a modified jAueführungeform of the invention, a Betätigungsmechariis- in the other under "

«U«

I »t see, the» u »

Connect the pressure medium

lei tungen de * Voreatzee wit those of the combine harvester fIe LetkSeiten “it the locking organs and the Claw clutch can be operated i »tj and

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ORIGINAL INSPECTED

Fig. 8 is a partial view for illustrating a Detail from FIG. 7 on a larger scale in the viewing direction indicated by the arrow G in FIG.

Fig «1 and 2 show the front part of a mobile combine harvester with self-propulsion, which consists essentially of a Frame 1 is made, which carries a driver's platform 2 and which is mounted on wheels, of which only the front wheels 3 and which enable the combine harvester to be driven on the road and in the field «In the front part of the Frame 1 is a longitudinal lifting conveyor 4, which is mounted in a housing 5 and is intended to the harvested from the header or cutter 6 agricultural products to the organs for threshing and the Treatment of the harvested crop (not shown) to supply the i «Inside the frame 1 of the combine are provided« The housing 5 is «it's» rear end on the frame 1 the machine Uw a horizontal, transverse shaft 7 swiveling

bar, and on both sides of the housing * 5 there are drive

J-

medium, for example double-acting hydraulic cylinders 8, provided, the cylinder and piston rods on the frame 1; the machine b »w. a «housing 5 are hinged and a pivot * de · allow the latter about its axis 7 when the hydraulic cylinders 8 are acted upon with pressure medium by the Driver of the machine on the dashboard 9 of the driver's

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ORIGINAL INSPECTED

control element provided for place 2 actuated · the intent 6 is detachable and has an opening in its rear wall 6a which communicates with the front open end of the housing

5 is covered when the attachment 6 is coupled to the housing «

In order to enable automatic coupling or «appending of the prefix

Set to allow the housing 5, two pairs of complementary coupling organs are provided in a known manner, which in the transverse direction at a distance from each other on both sides of the housing 5 and the opening in the Rear wall of the attachment 6 are arranged · From each other complementary coupling organs 11 and 12 of each pair is that one (12) on the housing 5 and the other (11) on the attachment

6th carried, and they are designed so that they movements of the attachment with respect to the housing in the axial Direction and downward, however, when engaged, prevent the header from pivoting in with respect to the housing and a shift of the latter downwards with respect to the attachment, if the Hydraulic cylinder 8 is actuated, with the aid of which the coupling elements 11 and 12, which complement one another, are engaged brought or «can be separated, under the action of a movement of the housing with respect to the intent upwards or * downwards, while the intent rests on a fixed support 13, which is formed, for example, by its chassis for road travel. In the case of the in Fig.!

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and illustrated embodiment 2, the coupling member 11 by a geblldet downwardly to open hook and the coupling member 12 by a pin _e It should be noted that of course the pin 12 could be disposed on the attachment and the hook 11 on the housing, provided that the hook 11 is aligned with the open side up, _o

If once the complementary coupling organs and 12 have been coupled together or engaged in the manner described above, the first becomes the Housing 5 is lifted by means of the hydraulic cylinder 8, so that the attachment 6 is pivoted with respect to the housing 5 and in this way its rear wall 6a is brought against the front end of the housing · It is also known for Securing the locking of the coupling established in this way to provide at least two complementary locking organs, one of which is worn on the housing and the other on the attachment and which prevent the attachment from moving to be displaced upwards with respect to the housing, and of these is the locking member carried on the housing pivotally mounted on this in such a way that it optionally engages with the locking member carried on the attachment can be brought or released from this, while operating elements with the pivotable locking element connected, as well as a second, from the driver's platform

+ continue _ -j 6 «.

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of the combine harvester from a remote-controlled drive unit that is connected to the said operating elements for actuating the locking or unlocking the said, complementary locking devices are provided "

In the embodiment shown in Fig «1 and 2 embodiment, these complementary locking elements a pivotably mounted on the housing 5 hooks ^ k and a fixed supported on the attachment 6 pin 15 · Xm rest of the invention are according to the the pivotable hooks 14 associated control parts formed by an eccentric device 16 "As shown in more detail in FIGS. k and 5, this Exasenterttrieb has a lever 17 and a link 22 for actuation, of which the first" with respect to the housing 5 about a pivot axis 19 of the pivotable locking hook 1 k parallel axis 18 is pivotably mounted and is connected to the piston rod 21a of a double-acting hydraulic cylinder 21 which forms the second drive member, and of which the latter, the link 22, with its one end on the pivoting hook 14 t & a joint 23 and with its other end. The piston rod 21a of the hydraulic cylinder 21 is hinged to the lever 17 at 25, while the rear end of this hydraulic cylinder 21 is hinged to the housing 5 (FIGS. 3 and k) is.

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At 23, the link 22 is articulated to an arm 27 which is attached radially rigidly to the axis 19, and the hook 1 * f is in turn also mounted radially rigidly to the axis 19. This axis 19 is pivoted in two bearings 28, 28a (Figs. 3 and 6), the former being carried on the side wall of the housing 5 and the other being carried on the wall 5a which is adjacent to the side wall of the housing 5, with the latter "The hook 14 is attached to the outer end of the shaft 19, and the pin 15" with which the hook Ik is to interact is firmly connected and parallel to this, is mounted in two bearing brackets 29 which are fixed to the rear wall 6a of the attachment 6 are connected and are arranged outside the wall 5a of the housing 5 «

According to the invention, the pivot lever 171, the handlebar 22 and the pivotable hook 14 are designed such that in the course of the pivoting movement of the lever 17 in the direction of the arrow X, ie in the locking direction} the pivot point 2k of the handlebar 22 on the lever 17 has a dead center exceeds, just before the lever 17 is brought to a standstill by a stop that limits the locking distance, and this dead center corresponds to a position of the lever 17, the handlebar 22 and the hook Ik _t in which the three hinge points 18, 23 and 2k are aligned. Said limit stop can be in the form of a stop member 31

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ORIGINAL INSPECTED

be designed, the dash-dotted lines in Pig «4 and 5 is shown and is firmly connected to the housing 5 and is arranged in the movement path of the lever 17, or As shown in Figure 5, it can be formed in that the piston 21b of the hydraulic cylinder is in the locking position for contact with the front wall 21c of the hydraulic cylinder 21 arrives. With such a design is in the locking position (Fig »5) after exceeding the Dead center excluded any movement of the attachment 6 upwards with respect to the housing 5, since such a movement Via the hook 14 and the handlebar 22 onto the pivot lever 17 is transmitted and this seeks to pivot in the sense of a reinforcement of the stop effect that said stop exerts on the lever 17 to limit the locking distance. In other words, a move of intent 6 with respect to the housing 5 upwards leads to the endeavor the lever 17 only more firmly on its abutment 31 or » the piston 51b even more firmly against the front wall 21c of the To press hydraulic cylinder 21

In addition, the link 22 of the eccentric drive 16 is adjustable in length, and the length of this link is adjusted so that in the course of the pivoting movement of the lever 17 in the direction of arrow A (Fig k) , which corresponds to the locking process, the engagement position between the hook \ k and the pin 15 is reached just before the articulation point Zk of the link 22 on the lever 17 the aforementioned dead

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point exceeds, so that the hydraulic cylinder 21 is forced to overcome a resistance to another To cause pivoting of the lever 17 so that this the Overcomes dead center and so that it is brought into its end position shown in Fig. 5, which is the end of the dem Locking represents the corresponding movement path »Under these conditions, one obtains a safe one in this way Locking, even if in the hydraulic cylinder 21 after

+
if there is a malfunction in the pressure medium supply if the lock follows there is even the possibility of completely interrupting the pressure medium supply to the space behind the piston 21b in the chamber 21d of the hydraulic cylinder

As shown in the schematic plan view (Fig. 3), two complementary locking members Ik and 15 are provided on each side of the housing 5, of which the pivotable hook 14 of each pair is pivotable on the housing 5 by means of the transverse and horizontal axis The pivoting lever 17 is connected to the piston rod 21a of the hydraulic cylinder 21 and, as indicated schematically by a wedge 32 (Fig.4), is non-rotatably connected to one of the ends of a horizontal transverse shaft 18 which is passed through the housing 5 , in the side walls of which it is rotatably mounted by a tube 33, which is also guided through the housing 5 and serves as a bearing for the shaft 18.

+ a lick or - 20 -

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this shaft 18 is a second pivot lever 17 rotatably arranged, and there is also a second link 22 is provided, one end of which is hinged to the second pivot lever 17 and the other end to the pivotable hook Ik of the second pair of complementary locking members. Thus, when the Hydraulikyzünder 21 is operated, the two pivoting hooks Ik are actuated simultaneously and are brought with their associated pins 15 to engage or disengage, depending on the operating sense of the hydraulic cylinder 21. ^In: Incidentally, as Fig. k, 5 and 6 show the end of the piston rod 8a of the hydraulic cylinder 8, which is intended ^to pivot the housing 5 about its axis 7, articulated by means of an axis Jk between two arms 35 which are rigidly attached to the tube 33, which in turn is rigidly fastened in the side walls of the housing 5.

As is known per se and as shown in Figs. 4, 5 and 6 , the housing 5 of the elevator carries a horizontal and transverse driven output shaft 36 which protrudes over one of the side walls of the housing and with a horizontal, transverse input shaft of the front - • Atzes 6 is axially aligned when the attachment is coupled to the housing 5. The shaft 37 is * in a bearing 38. »Stored, which is mounted in a plate 39, which with

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1 098A0 / 118 4

is firmly connected to the attachment (Fig. 6). The shaft 36 is mounted in a bearing 40, which is mounted in the plate 5a (Fig. 6), and is driven to rotate by devices not shown, for example by means of a sprocket sprocket non-rotatably on the shaft 36 and a Gall chain around the sprocket is guided around and around another sprocket which is mounted on the axle 7 (FIG. 3) and is in turn driven in rotation by means of drive elements (not shown) arranged inside the frame 1 of the combine harvester Shafts 36 and 37 a claw

41

Coupling provided, which consists of the claw disks or coupling halves 42, 43, the rotatably with the facing each other Ends of the shafts 36 and 37 are connected and their facing front surfaces the cooperating Bear teeth or claws 42a and 43a, and those on the output shaft 3 ^ arranged clutch disc 42 is in the axial direction this output shaft displaceable so that its teeth 42a in or out of engagement with the claws 43a of the other Clutch disc are feasible, by means of a Fork 44 which is mounted on the housing so as to be pivotable about an axis 45 which is at right angles to the output shaft 36 is and the fork arms have protruding parts, for example fingers 46 or rollers, which in one on the circumference of the slidable clutch disc 42 formed circumferential groove 47 engage radially} otherwise actuation elements are

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rich.tun.gen provided that allow pivoting of the fork 44 in such a way that the groove in the groove 4? engaging protrusions 46 move the sliding clutch disc 42 in the axial direction, against the return force of a spring system 48, in such a way that the teeth 42 a and 43 a of the claw clutch discs 42 and 43 are disengaged and thus the two shafts 36 and 37 are decoupled Rotary drive of the clutch disc by enabling the shaft 36 and still giving it the possibility of displacement on the shaft 36 in the axial direction, the shaft 36 has serrations or axial grooves 36a at its end, which with corresponding internal serrations of the hub 42b the clutch disc 42 cooperate. In addition, the hinge axis 45 of the fork 44 is mounted in a bearing part 49 which is rigidly attached to the sheet metal 5 & of the housing. In Pig. 4, 5 and 7 this housing plate 5 & is partially broken away in the interest of better illustration of the parts arranged behind it.

According to one feature of the invention, the actuators include the pivotable fork 44 a first lever arm 51, which is rotatably connected to the fork 44, a second Lever arm connected to the pivotable locking hook 14 Is rotatably connected and which is formed by the arm 27 already described above, and a link 52, the

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109840/1184 ORIGINAL JHCPECTED

one end to the free end of the first lever arm 51 and the other end of which is connected to the free end of the second lever arm 27 «thanks to such an arrangement the coupling or decoupling of the shafts 36 and 37 can be done at the same time as the four-bar locking or unlocking of each other complementary locking members 14 and 15 carried out * Those shown in full lines in Fig. 6 ·. Position; . of the organs corresponds to the position of same organs in Fig. 4, i.e., those positions in which on the one hand the mutually complementary locking devices 14 and 15 are disengaged and on the other hand the clutch disks 42 and 43 are decoupled "In The dot-dash lines are also the position in FIG. 6 shown, which occupy the parts 42, 44, 51 and 52) if • I have the clutch disks 42 and 43 in the coupled state located «The handlebar 52, the length of which is preferably adjustable, is on the one hand with the lever arm 51 and on the other hand with the lever arm 27 by means of a universal joint 53 or "articulated by means of a tenon and slot connection 54, the function of which will be explained later" The connection 54 consists of a pin 54 a with the Lever arm 27 is firmly connected, and a sliding guide 54b which is formed in the link 52 and in which the pin 54a intervenes «

According to a further feature of the invention, the cooperating teeth or claws 42a and 43 & of the coupling «·

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disks 42 and 43 "in a trapea-shaped profile, since in combination with the system of springs 48 it is suitable to limit the torque transmission through the claw coupling 41 in such a way that, if the torque exceeds a predetermined value, the teeth or teeth under each other Overcoming the return force of the springs 48 mutually displace.If the torque exceeds this predetermined value and the teeth push each other out of the engagement position, this has the consequence that the fork 44 and the lever arm 51 are pivoted.This pivoting movement must not exceed the handlebar 52 are transferred to the lever arm 27, otherwise there would be the risk that the hook 14 would be raised outside of the box is connected, which allows a sufficient dead gear «« laughing »handlebars 5t and the lever arm 27» The SSffen- and »ehlitaverbindang $ k is in the same way b Eimk «ppaln der- claw coupling 42, 43 required« If »wrongly the linkuppleln · the teeth 42a of the clutch disc 42 are opposite the teeth 43a of the disc 43, the teeth 42a and 43a will not immediately intermesh, but will butt butt against each other, so that under "ttmven sedation neeh" in dead oang in the drive chain "and badia organs of the fork 44 are required, and the" dead " mmm- ** ■ ** ht9T " wreh "te fa" fe "and fetalita connection 54 created . If the teeth 42a and 43 «at the

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Coupling sunäcaet sur dull plant led to each other The teeth are, as described in the following, the teeth are automatically brought into contact with one another by pressing the fader 48! will.

Apart from that, in the case of conventional harvester heads in the Voraata or cutting unit 6 ie general hydraul! Acha devices, atapialaweiae hydraulic cylinders, inabeaondare ma

53 Sway the support arm of the Haapel 36 (Fig * t and 2) or "Activate every aaaatlgan in the" Voraat " 6 arranged hydraulic actuation aayatema proceed. via with the traditional sewing dreacharn waiat dar geatäO dar invention mindeatana swat alnawAar «ugaardnata Mydra« liaoha Anacnlttaaa 57 * 58 for dl »connection τοη Druckaittallaitungan 59 daa Voraat · * ·« it ainaria Drigickitaittal; 6Λ on, dia

(not shown) OruckMittalqualle Tarbundan did · The Anachlüaaa 57 * «** 58 aind baiaaielaweiae kaedelattküeb« Anachlüaaa ait built-in, autonatiach at the Anachliafian opening and »alai disconnecting achliaftemtati valves. As in 7 and 8 gazaigt, four pairs can be used atapielaweiae each other BUgaerdmeter AnachlUaaa 57 and 58 -vorgeeeken aain, of which each adjoining 5 7 ainaa jaden pairsβ ■ '; ainar Line 59 va * Every anachi nut 58 a ·· jaden pair ·· one Management 61 subordinate to iat. According to the invention iat ron the

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associated pressure medium connections Each pair of the one 57 ^ n the header 6 and the other 58 ^a n the housing 5 carried in such a way that they are aligned when the header is coupled to the housing, and the connector 58 carried on the housing Mounted on a carrier 62 which is designed to be displaceable with respect to the housing 5 in the direction of the common alignment axis 63 of the two mutually associated connections 57 and 58. In addition, according to the invention, an actuating mechanism 6k is provided which is connected to the displaceable carrier 62 and to the pivot lever 17 of the eccentric drive or to an organ non-rotatably connected to this and is designed in such a way that it connects the connection 58 carried on the displaceable carrier 62 connects to the associated connection 57 when the lever 17 is actuated by means of the hydraulic cylinder 21 in the direction of locking, and separates the two connections 58 and 57 when the lever 17 is actuated in the direction of unlocking.

To facilitate the centering of the two connections 57 and 58, at least one of these two connections, for example the connection 58, the other a conically tapered surface 58a. Of course, the connection 57 can also the connection 58 a corresponding to the surface 58a, Present conical counter surface. As shown in the partial section in FIG. 8, the centering of the connections can also be done

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109840/1184

ORIGINAL

57 and 58 when connecting the same and the compensation of the assembly tolerances are brought about in that the connection or connections 57> which are carried on the attachment 6 are mounted on a support plate 65 which, with respect to the attachment 6, starting from a central one Position, is displaceable in all directions of a plane standing at right angles to the common axis 63 of the two complementary hydraulic connections, and that elastic devices 66 are provided which return this support plate 65 to its central position, so that, thanks to this arrangement, the hydraulic connections 57 and 58 can be connected to one another in perfect alignment at any time, even if their axes are not perfectly aligned before the connection is established. In order to enable said displacements of the support plate 65 with respect to the attachment 6, this plate 65 is mounted on a plate 6b of the attachment 6 and is held in contact therewith by the heads 67 of pins 68 which are attached to the plate 6b and which are passed through holes provided in the support plate 6 ^ . These holes have a larger diameter than the pegs 68, and elastic return means 66 in the form of inserted elastic sleeves are provided between the pegs 68 and the soffits of said holes formed in the plate 65. As can also be seen from FIG. 8, the carrier 62 of the connections 58 is shown

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109840/1184

equipped with two guide rods 69 that can be freely inserted into Guides 71 are displaceable, the axes of which are relative to the axes

the
63 are parallel and are supported on a plate 72, which in turn is supported at each of its two ends on a vertical plate 73 fastened to the housing 5 by means of angle profiles 7 ^ ",

In the embodiment shown in FIGS. 7 and 8, the operating or control mechanism 64 has a sector-shaped plate 75 and an arm 77, of which the former is non-rotatably connected to the pivot lever 17 of the eccentric drive and has a cam slot 76 and of which the latter The arm 77 'is pivotably mounted with one of its ends on the housing 5 and with its other end is articulated on the displaceable support 62 of the hydraulic connections 58. The arm 77 carries an attachment 78 which is equipped with a finger 79 which engages in the slot 76 of the plate 75 and cooperates with the lateral boundaries of this slot 76 . As seen from Fig. 7, the plate 75 is rigidly connected to a hub 81 which is keyed rotationally fixed to the shaft 18 by means of a wedge 82 α Now, since the pivoting lever 17 in turn to the shaft 18 by means of a wedge 32 (Fig. K) is wedged in a rotationally fixed manner, so the plate 75 is non-rotatably connected to the lever 17. Since, moreover, the carrier 62 of the hydraulic connections 58 executes a linear displacement movement

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1 0 9 8 4 0/1 1 8 k

the pivot arm 77 executes a pivoting movement, must one of the articulated connections of this pivot arm 77 have a certain flexibility. This is achieved by that the joint of the pivot arm 77 on the carrier 62 is designed in the manner indicated in Fig. 8 at 83, while its joint on the housing 5 is indicated in FIG Way is formed in that one end of the axle 84 is carried in a plate 85 and between the End of the axis 84 and the pivot lever 77 an elastic sleeve 86 is inserted »

When the pivot lever 17 of the eccentric drive is assigned Hydraulic cylinder 21 is actuated and a common pivoting movement of this lever 17> causes the shaft 18 and the plate 75 act thanks to the training described above the side walls of the slot 76 on the finger of the arm 77 so that the latter the sliding movement of the carrier 62, in a first sense for connecting the hydraulic connections associated with one another and 58 upon actuation of the hydraulic cylinder 21 in Sense of locking the complementary locking members 14 and 151 or, in an opposite sense to the Separation of the connections when the hydraulic cylinder is actuated 21 in the sense of unlocking the complementary locking organs.

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10 9 8 4

As can be seen from the explanations above, actuation or control devices have been described which can be actuated by a single double-acting hydraulic cylinder and which simultaneously lock associated locking elements 14, 15, the coupling of the output shaft 36 to the input shaft 37 and the connection of the hydraulic connections 57 and 58 or the simultaneous unlocking of the locking elements Ik and 15 assigned to one another and the disconnection of the hydraulic connections 57 and 58 enable _e The operator of the combine harvester will be able to control the coupling of the header 6 to the housing 5 of the lifting conveyor of the combine harvester by first actuating the hydraulic cylinder 8 in such a way that the housing is pivoted about its axis 7 in order to couple the header 6 to the To bring about housing 5 by means of the coupling elements 11 and 12, as described above, and in-by then actuating the hydraulic cylinder 21 in such a way that the three above • described activities of locking, engaging and connecting the hydraulic connections brought about simultaneously is » The coupling of the attachment 6 to the housing 5 is completely automated, and the driver

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109840/1184

of the combine harvester does not need to close its driver's platform left to connect the hydraulic connections, as required in the previously known combine harvesters is.

As indicated above, the slot 76 is the sector-shaped plate 75 (Fig. 7) in its front part concentric to the hinge axis 18; at the beginning of the rotation, the slot thus acts on the finger 56 of the pivotable Arm 77 'which drives the displacement of the carrier of the hydraulic connections, not one; the postponement of this The carrier does not rotate until the last part of the plate 75 »in which the slot 76 (in the radial direction) rises, i.e. «only after the intent is flawless Position and is locked to the housing of the hoist conveyor «

The embodiment described is of course only an example 'and the description is in no way to be taken in a limiting sense, as there have been numerous variations are possible without deviating from the inventive concept

Claims

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1098A0 / 1 184

Claims (1)

Claims Self-propelled, self-propelled combine harvester with a frame mounted on wheels, a longitudinal lifting conveyor housed in a housing which is mounted on the front part of the frame of the machine so that it can pivot about a transverse, horizontal axis, first drive means which can be remotely controlled from the operator's platform of the combine harvester for pivoting the housing about its pivot axis, an attachment or a cutting mechanism, which can be automatically coupled to or separated from the housing by means of complementary coupling means carried by the attachment or the housing above or from top to bottom with respect to the attachment to engage or disengage with each other, while the attachment is on a fixed support, at least two complementary locking members, one on the housing and the other on the attachment and the a shift prevent ng of the attachment with respect to the housing upwards after coupling, wherein the locking member carried on the housing is pivotably mounted on this such that it can be brought into engagement or _o disengagement with the locking member carried on the attachment, control or . 1 0 Π 8 4 Π / 1 I B A Remote controlled actuators which are connected with the pivotable locking member and a second ^e from the driver's platform of the combine
Drive member with the housing and the aforementioned
Actuating or control members are connected, characterized in that said control members are formed by an eccentric drive which contains a lever and a link, the former being pivotably mounted with respect to the housing about a pivot axis parallel to the pivot axis of the pivotable locking member and is connected to the piston rod of a double-acting hydraulic cylinder _f and of which the latter (the link) with one of its ends at the
pivotable locking member and with his other
End on the pivot lever at one point of the latter
is articulated from the pivot point of the lever
the housing is arranged at a distance, the pivot lever, the handlebar and the pivotable locking member are designed and arranged such that in the course of the pivoting movement of the lever in the sense of locking the pivot point of the handlebar on the pivot lever passes a dead center just before the
Pivoting lever is brought to a standstill by a stop, which ends the locking distance, so that in - 3h - 1098A0 / 116 * the locking position after the dead center has been exceeded, any movement of the attachment upwards with respect to the housing is excluded, as such Transfer the movement via the pivotable locking member and the handlebar to the pivot lever of the lock is and endeavors to pivot this lever in a sense that reinforces the holding effect corresponds to that which is exerted on the pivot lever by the stop that determines the end of the locking section, 2 · Combine harvester according to claim 1, characterized in that the handlebar of the eccentric drive is adjustable in length and the length of the handlebar is set so that in Course of the pivoting movement of the lever in the sense of locking the engagement of the complementary Locking organs takes place just before the pivot point of the handlebars on the pivot lever the dead center exceeds, so that the hydraulic cylinder has to overcome a resistance in order to pivot the lever further, to cause it to pass the dead center and to bring it to the end position of the locking distance bring, whereby in this way a reliable locking is ensured even in the event that in the hydraulic cylinder leakage losses or in the pressure medium supply to this malfunction occur. - 35 - 109840/1 3β combine harvester according to claim 1 or 2, wherein at each Side of the housing two complementary ■ locking organs are provided, of which the pivotable locking member of each pair by means of a horizontal, transverse axis is pivotably mounted on the housing, characterized gekennzeichne.t that the with the Piston rod of the hydraulic cylinder connected to the pivot lever with one end of a transverse horizontal Shaft is rotatably connected, which is passed through the housing, in the side walls of this shaft is mounted rotatably, and that at the other end of the wool, a second, rotatably connected to this pivot lever and a second link, the ends of which with the second pivot lever or »the pivotable locking member of the second pair of complementary locking devices are articulated, are provided. 4 "Combine harvester according to claim 3, wherein the housing of the Lifting conveyor is a horizontal, transverse, rotating driven one Has output shaft which protrudes beyond one of the side walls of the housing and axially with it is aligned with a horizontal, transverse input shaft of the header when coupled to the housing is, and in which a dog clutch is provided for coupling the output and the input shaft, the - 36 - 109840/1184 consists of disks or coupling halves which are rotatably wedged at the ends of the input or output shaft and whose facing surfaces carry teeth or claws _f and of which the coupling half carried by the output shaft is axially displaceable on this output shaft in such a way that its teeth with those
of the other coupling half to engage or disengage
Can be brought into engagement, and wherein on the housing a
Fork around one to the output shaft at right angles
standing axis is pivotably mounted, the arms of which bear projections that engage radially in a circumferential recess formed in the outer surface of the movable coupling half, and wherein control members for pivoting the fork are provided in such a way that the projections cooperating with the circumferential recess the displaceable coupling half in the axial direction while overcoming the return force of a spring system in the sense of loosening the engagement of the teeth of the coupling halves and in this way the
separate two shafts, characterized in that said control members of the swivel fork comprise the following parts] a first lever arm which is rotatably connected to the rotatable fork, a second lever arm which is rotatably connected to the rotatable locking member, and a link, one end of which with the free end of the first and its other end - 37 - 1 O 9 8 4 O / 11 8 4 are connected to the free end of the other lever arm, 5 Combine harvester according to Claim 4, characterized in that that the cooperating teeth of the coupling halves have a trapezoidal profile, which in cooperation with the system of return springs a limitation of the torque transmitted via the dog clutch allows ι that when the predetermined Value of the torque, the teeth of the coupling halves mutually overcoming each other by the spring system exerted return force out of engagement, and that the handlebar with one of the two lever arms is connected by a tenon and slot connection, which creates a sufficient backlash between the handlebar and the relevant lever arm, so that the pivoting movement of the first lever arm from the handlebar is not transmitted to the second lever arm when the torque exceeds the predetermined value, and that the teeth, by forcing one another out of engagement, cause the fork to pivot " 6. Combine harvester according to any one of claims 1 to 5 with two complementary pressure medium connections for connecting the hydraulic lines of the attachment a ■ pressure medium feed line from a pressure medium source provided on the machine, characterized in that - 38 - 109840/1 ^ U that one of the hydraulic connections on the attachment and the other are supported on the housing in such positions that they are aligned with one another, when the attachment is coupled to the housing, and the
that the connection carried on the housing is mounted on a carrier which is displaceable with respect to the housing in the direction of the common alignment axis of the two connections, and that a control mechanism with the displaceable carrier and with the pivot lever of the eccentric drive or an organ non-rotatably connected to this to connect the connection carried by the displaceable carrier to the other connection when the swivel lever is actuated by the hydraulic cylinder in the locking direction and to disconnect the two connections when the swivel lever is actuated in the unlocking direction, 7 · Combine harvester according to claim 6, characterized in that at least one of the complementary hydraulic systems Connections presents the other with a conical surface that centers the two connections against each other facilitated when connecting the same. 8, combine harvester according to claim 7t, characterized in that the pressure medium connection carried on the attachment is mounted on a carrier which, with respect to the attachment - 39 - 109840/118 from a central position in all directions in a complementary axis to the common axis of the two Pressure medium connections is displaceable at a right angle plane, and that elastic return means are provided, which lead back the carrier in the central position, so that the complementary Pressure medium connections can be properly connected to one another at any time, even if their axes are connected before the connection are not properly aligned, 9 »Combine harvester according to any one of claims 6 to 8, characterized in that the control mechanism contains a sector-shaped plate which is rigidly radially attached to the shaft to which the pivot lever of the eccentric drive is attached and has a cam slot, and that an arm with mounted one of its ends to the housing pivotally and hydraulic connection is articulated with its other end on the supported on the housing, slidable carrier and the one engaging in the slot of the sector-shaped plate fingers carries cooperating curved manner to the side walls of the slot so that on actuation of the hydraulic cylinder assigned to the swivel lever of the eccentric drive, in which the lever, the shaft and the sector-shaped plate are swiveled together, the side walls of the slot on the pinger of the swivel - KO - 109840/1184 poor act in such a way that this when actuating the hydraulic cylinder - in the sense of "locking the Complementary locking members the displacement of the carrier in the sense of connecting the one another additional pressure medium connections and when the hydraulic cylinder is actuated in the sense of unlocking the mutually complementary locking devices in the sense of separating these connections " 10 »Combine harvester, characterized by a removable, + can be coupled to the front lifting conveyor of the combine harvester by means of mutually complementary coupling elements Attachment or a cutting unit, complementary locking elements for locking the coupling of the Attachment to the housing, a first, carried on the housing control or actuating device for Actuation of the complementary locking members j an output shaft carried on the housing and a input shaft carried on the attachment, which is axially aligned when the attachment is coupled are a coupling device for coupling the input and output shafts, one carried on the housing second control or »actuating device to operate the clutch between input and output + Housing of the - 41 - 109840/1184 Ix shaft, complementary hydraulic connections for connecting the hydraulic lines of the attachment with the pressure medium feed lines coming from a pressure medium source provided within the scope of the combine harvester, of which the one pressure medium connection on the attachment and the other on the housing in such Are supported so that they are axially aligned when the attachment and the housing are aligned, a third control or actuating device carried by the housing for connecting or disconnecting the complementary hydraulic connections and a single hydraulic cylinder carried on the housing, that for the simultaneous actuation of the first, the second and the third control or actuating device is connected to all three control or actuating devices. 109840/1184