DE1108501B - Switching device for inserting and lifting track looseners coupled with agricultural tools, especially for tractor devices - Google Patents

Description

GERMAN

PATENT OFFICE

V12008 m / 45a

REGISTRATION DAY: 26. F fe B RU AR 1957

BIBLIOTKEK DES KUTSCHE » NOTIFICATION OF THE REGISTRATION AND ISSUE OF THE DISPLAY:

June 8, 1961

The invention relates to a switching device for insertion and removal with agricultural Tools for coupled track markers, especially for tractor implements, according to patent 1036 557.

The switching device protected by the main patent 1036 557 for insertion and removal with agricultural tools coupled track markers, especially for tractor implements, has two Track markers, which are connected to certain levers by means of chains for operation, which chains on the other hand operated by a lifting mechanism via levers in such a way that the marker automatically in the rest position can be brought, while when lowering the tools (i.e. the coulter) alternately one or the other marker is brought into the working position. This is accompanied by the loose bell a known lifting gear is firmly connected to a spur gear and is connected to a ratchet wheel with a gear ratio of 1: 2 engaged. The column wheel is provided with a crank pin to which a push rod is articulated, which is attached to the pull arm an angle lever attacks, which in a manner known per se via a chain with those carrying the marker arms Lever connected. The ratchet is laterally arranged with two diametrically opposed Provided crank pin, which is used to accommodate a push rod that can be reversed by means of a quick-release fastener to serve. The gearbox is driven from the ground wheel via a gear transmission; the mechanical Inserting and lifting the marker with tools can only be done during the work trip.

According to the invention, a simplification of the transmission and the automatic insertion and Lifting of the track markers with the tools at a standstill as well as during work the same achieved in that a known gearbox, consisting of on an axis a ratchet wheel and two universal-jointed cranks, loosely arranged and attached to the Ends of the cranks the pawls are hinged in opposite directions, which in the notches of the Engage ratchet wheel, and that two push rods of different lengths to fix the ratchet wheel on the one hand at the universal joints of the cranks and on the other hand by means of universal joints on one with a switching angle connected axis are articulated. It is useful that the respective Fixing of the ratchet wheel with four switching intervals of the switching angle two with stops on the ratchet wheel having cooperating locking legs. Another advantage is that the ratchet wheel to the loading switching device

for insertion and removal

with farm tools

Coupled track marker, especially for tractor devices

Addendum to patent 1,036,557

Applicant:

VEB Landmaschinenbau Bernburg, Bernburg, Parkstr. 11

Richard Grimmer, Erich Salomon

and Günther Rosemann, Bernburg,

have been named as inventors

operation of the marker is provided with a crank pin.

There are already switching devices known in which those with agricultural tools coupled track marker by means of a ground drive from a lifting gear only during work can be moved up and down interchangeably. The loose bell of the screw jack is with a The spur gear is firmly connected and meshes with a ratchet wheel. The ratchet wheel has two diametrically opposite sides opposite crank pin to which a push rod is articulated, which is attached to the pull arm of a Angle lever engages, wherein the push rod can be repositioned by means of a quick release.

On the other hand, the subject of the invention allows the loosely rotatable arrangement of a per se known Ratchet wheel and two universal-jointed cranks on the axis of the gearbox an automatic Actuation of the marker with the work

109 610 / 11S

testify when the machine is at a standstill as well as during its work, with the Ends of the cranks the pawls are articulated in opposite directions, which in the notches of the Engage ratchet wheel.

To move and hold the ratchet wheel, there are different lengths of push rods on the one hand on the universal joints of the cranks and on the other hand by means of universal joints on one with a switching angle linked axis articulated.

An exemplary embodiment of the invention is shown in the drawing. It shows

Fig. 1 is a schematic representation of a switching device with a marker in the front view,

Fig. 2 is a schematic representation of a switching device with track marker in plan view,

3 shows a representation of the switching mechanism in longitudinal section,

Fig. 4 shows a representation of the switching mechanism in the front view and

Fig. 5 is a schematic representation of the switching mechanism.

On a tractor 1 is a support frame 37 for between the front and rear axles 23 on the fuselage agricultural tools, e.g. a drill, attached. The support frame is transverse to the direction of travel arranged shaft 25 provided for inserting and removing the tools by a hydraulic working cylinder 29 rotated by an intermediate lever 27 by a certain angle can be. On the shaft 25, a two-armed switching bracket 28 is also attached, which on his an arm is provided with a bolt 45 arranged parallel to the shaft 25. Sitting on the bolt 25 a universal joint 44, 44 'on both sides of the switching angle arm, from which a push rod 31, 3Γ extends, which are each equipped with a further universal joint 30, 30 'at the other end. The push rods have a different length. Two cranks 32, 32 'are hinged to the universal joints 30, 30', which are rotatable on a bolt 36 and on which switching pawls 34, 34 'are articulated in opposite directions are. When the shaft 25 is moved, these give a ratchet wheel 35 an intermittent one via stops 43 rotating movement clockwise. The ratchet wheel 35 is also rotatably seated on the bolt 36, which is with the frame support 37 is rigidly connected. It carries a crank pin 38 off-center on which a connecting piece 39 rotates. Stops 46 are attached to the outer circumference, against which one another alternates Place the two locking legs of the switching bracket 28. Grasp the connector 39 the two tension cords 40, 40 'for the movement of the track markers pivotably mounted on the frame support 37 41, 41 'at. The connection of the markers to the tension cords 40 takes place via angle levers 40, 42 '.

The mode of operation of the arrangement is as follows: When engaging or disengaging the tools by means of the Lifting cylinder 29 and the crank 27, the shaft 25 is rotated by a certain angle. The size the angle that the crank 27 describes is determined by the given conditions of the tools. The two push rods transmit from the switching angle 28 attached to the shaft 25 or its bolt 45 31, 31 'by means of the universal joint 44, 44' and 30, 30 'the rotary movement on the two cranks 32, 32 'and thus the ratchets 34, 34'. The gear ratio is matched so that at the given angular deflection of the switching angle 28, the cranks 32, 32 'have an angular deflection of at least 90 ° each. The pawls attached to the cranks 32,32 'in opposite directions 34, 34 'give the ratchet wheel 35 an intermittent, co-directional motion when the shaft 25 moves Rotary movement with a switching interval of 90 ° each.

The switching angle 28 on the shaft 25 is designed so that at the end of each switching interval the ratchet wheel 35 in the direction of rotation by one of the limbs of the switching angle which adjoin a stop 46 28 is locked. In the opposite direction, the ratchet wheel is arranged in opposite directions Ratchets 34, 34 'and the stops 43 held. The two push rods of different lengths 31, 3Γ secure a rotary movement with an angular deflection of the switching cranks 32, 32 'of more than 90 ° of the ratchet wheel 35 by 90 ° by each one of the pawls 34, 34 ', which in the corresponding Switching interval takes over the rotary movement of the ratchet wheel 35, one advance with respect to the stop 43 on ratchet wheel 35. With a switching interval of 90 ° of the ratchet wheel 35 are over the crank pin 38 the connecting piece 39 mounted thereon and the tension cords 40, 40 'which are rotatable on the frame support 37 bearing markers 41.41 'via angle lever 42.42' moved in the following way:

When the tools are used and the crank pin 38 is on the left, the left marker 41 is used, the right lane marker 41 'lifted. With excavated tools and the crank pin above 38, both track markers 41, 41 'are in the floating position. With tools used and the right-hand marker 41 'is inserted and the left marker 41' is lifted out of the crank pin 38 on the right. When the tools are raised and the crank pin 38 below, there are both track markers 41, 41 'in floating position.

The ratchet wheel 35 can also be arranged in a horizontal position.

Claims (3)

PATENT CLAIMS: 1. Switching device for inserting and excavating with agricultural tools coupled track markers, especially for tractor equipment, according to patent 1036 557, characterized in that a known gearbox consisting of a ratchet wheel (35) and two with universal joints on an axis (36) (30, 300 provided cranks (32, 32 '), is rotatably arranged and at the ends of the cranks the pawls (34, 34') are hinged in opposite directions, which engage in the notches (43) of the ratchet wheel (35), and that to hold the ratchet wheel (35) two in length different push rods (31, 31 ') on the one hand on the universal joints (30, 30') of the cranks (32, 32 ') and on the other hand by means of universal joints (44, 44') on one with a switching angle (28) which is pivoted when the tools are engaged and disengaged, connected axis are articulated. 2. Switching device according to claim 1, characterized in that the respective fixing of the Ratchet wheel (35) at four switching intervals of the switching angle (28) two with stops (46) on Having ratchet interacting locking legs. 3. Switching device according to claims 1 and 2, characterized in that the ratchet wheel (35) is provided with a crank pin (38) for actuating the marker (41, 4Γ). Considered publications: U.S. Patent No. 2,604,027; Knab, overview of kinematics, 1928, p. 47, fig. 328, 329; Advertising leaflet John Deere, Moline / USA., No. A 677-48-11 from November 1948. 1 sheet of drawings