DE202015006410U1 - Vertical cutting unit of a harvester - Google Patents

Abstract

Vertical cutting unit of a harvesting machine, comprising a base frame (1), a cutting knife (2), a motor (3) and a transfer unit (4), the base frame (1) having means for connecting the vertical cutting unit to the harvesting machine and being mounted on the base frame ( 1) the cutting blade (2), the motor (3) and the transfer unit (4) are arranged, and wherein the cutting blade (2) is vertically arranged on the base frame (1) and capable of performing linear cutting movements, and wherein by means of the motor (3) a driving force can be provided, and wherein the transmission unit (4) with the motor (3) and the cutting blade (2) and connected by means of the transmission unit (4), the driving force from the motor (3) on the cutting blade (2) is transferable, characterized in that the motor (3) in a lower portion of the cutting blade (2) on the base frame (1) is arranged.

Description

The invention relates to a vertical cutting unit of a harvester, in particular a rapeseed knife.

Vertical cutting units of harvesting machines and in particular rapeseed knives are known from the prior art. These are devices which are usually arranged as additional elements especially for harvesting rape on a corresponding harvester. In the present case and in the further course, a harvesting machine is understood to mean a harvesting attachment which is arranged in particular on a combine harvester. Above all, rape plants are usually interlocked due to their growth, so that during a harvesting process, the adjacent rape plants are also moved outside the harvest path and fall down grains. By means of the vertical cutting plants, the mutually entrapped rape plants can be separated from each other and then harvested by the harvester that a comparatively low grain loss occurs.

Vertical trimming units known from the prior art usually have a substantially vertically oriented base frame, on which a cutting knife, usually consisting of two counter-rotating knife blades, is arranged. In addition, such vertical cutting units on a drive unit, which provides the required driving force for the movement of the cutting units. In most cases, the drive unit is designed as a hydraulic or electric motor and has a corresponding transmission element, for example a transmission, with which the drive force is transmitted to the cutting blade.

In the known vertical cutting units, the arrangement of the drive unit is usually carried out in an upper region above the cutting blade, so as to prevent in particular a disturbing engagement of the drive unit in the harvesting area. A vertical cutting unit with overhead drive unit is for example in block letters DE 20 2010 008 037 U1 disclosed.

In an overhead arrangement of the drive unit but may be caused by these vibrations, which in particular burden the base frame of the corresponding vertical cutting unit.

To counteract such unfavorable vibration behavior, the base racks known vertical cutting units are designed to be stable accordingly, which is made possible on the one hand by a high material usage or by elaborate construction elements. However, both a correspondingly high use of material and the structurally complex design of the base frame mean that known vertical cutting units can be produced with a high level of technical complexity and only at corresponding provisioning costs. In addition, known vertical cutting units, in particular due to the massive design of the base frame on a large weight, whereby the header is additionally charged.

The object of the invention is therefore to provide a vertical cutting unit for use on a harvester, which on the one hand is easy to handle, has a low weight and which can be produced at the same time with low production costs.

The problem is solved by the features listed in the protection claim 1. Preferred developments emerge from the subclaims.

[1]

A vertical cutting unit according to the invention of a harvesting machine has a base frame, a cutting blade, a motor and a transmission unit.

In the present case, the base frame has a vertically elongated extension and serves, on the one hand, for arranging the vertical cutting unit on the harvesting machine, the base frame having means for connection to the harvesting machine for this purpose. On the other hand, the base frame is used here for receiving the cutting blade, the motor and the transmission unit.

The cutting blade according to the invention is arranged vertically and preferably substantially parallel to the base frame on the base frame and capable of performing linear cutting movements. In this case, the cutting knife preferably has two counter-driven knife blades, through which the desired cutting function is provided.

The driving force required to operate the cutting blade is presently provided by the motor and transmitted by the latter through the transfer unit to the cutting blade. For this purpose, the transmission unit is connected, on the one hand, to the motor and, on the other hand, to the cutting blade and designed, for example, as a lever mechanism. In addition, in the present case there is the possibility that the transmission unit can be designed and arranged without problems on the base frame in such a way that it does not contact the cutting blade whose bottom end is connected but at a different position with this.

The vertical cutting unit according to the invention is characterized in particular by the fact that the motor is arranged in a lower region of the cutting blade. For the purposes of the invention, the lower region is understood to mean that the center of mass of the motor is arranged below half the vertical extent of the cutting blade.

It has surprisingly been found that an arrangement of the motor in a region of the longitudinal extent of the cutting blade and thus in the range of growth height of the plants to be separated, in particular the rape plants, does not adversely affect the desired cutting result, if the engine is arranged in a lower region , This is based on the fact that it was found that the space occupied by the engine at the vertical cutting unit in a lower area, below the main branch area of the plants to be separated and so does not significantly hinder the cutting process.

Preferably, the motor is also arranged on the side facing away from the knife blades on the base frame. In particular, in an arrangement of the engine on the knife blades in the operating direction facing away from the base frame takes place here in the operating direction of the harvester first, the cutting process, before being passed in the further course of the engine at the appropriate location. In this context, it is also possible to form the base frame in the area required for the motor space so that this is done after the cutting process and while passing the motor, a displacement of the separate and not yet cut rape plants, so that they from contact with remaining components of the vertical cutting unit or the harvester are protected and thus an undesirable grain failure can be avoided from the plants.

The technological advantage of the underlying arrangement of the engine is firstly that the base frame can be made lighter compared to conventional vertical cutting units and also no structural elements for reducing vibrations, which would cause an overhead drive unit, must be provided. In this way, the vertical cutting unit according to the invention can be made comparatively light and easy to handle and at the same time be provided inexpensively. In addition, there is the advantage that due to the lower weight and the harvester is mechanically less stressed and can be easily formed.

[2]

According to an advantageous development, the transmission unit is connected in a central region of the cutting blade with this. In this case, the middle region is understood to be the middle third of the vertical extent of the cutting knife.

This results in particular in the advantage that in comparison to a connection of the transfer unit to an end portion of the cutting blade caused by the introduction of force bending stresses or deformations or vibrations in the cutting blade can be reduced. It is particularly advantageous that the inventive arrangement of the engine in a lower region in its proper positioning and the transmission element itself must be able to overcome only short distances between the motor and the cutting blade and can be made correspondingly easy.

[3]

In an advantageous development of the vertical cutting unit, the motor is designed as a hydraulic motor.

The training as a hydraulic motor has the general advantage that it can be coupled with little effort into an existing hydraulic circuit of the harvester and thus no additional means for powering the engine must be provided.

The inventive arrangement of the hydraulic motor in the lower region results in the particular advantage that only very short connection paths for the hydraulic lines are required. The otherwise required according to the prior art comparatively long Hydaulikleitungen up to an overhead hydraulic motor can be omitted. This results in the advantage of additional cost savings and weight reduction.

[4]

In addition, a preferred variant of the invention provides that the motor provides the driving force for the cutting blade as a linear movement.

In this way, the implementation of a rotational movement in a longitudinal movement, which is usually to be realized by the transfer unit, can be dispensed with and thus the transfer unit can be made technically simple and correspondingly inexpensive. A linear drive can be realized especially as an electric motor drive.

The invention will be described as an embodiment with reference to

1 Schematic side view

2 Schematic detail view with outbreak
explained in more detail.

An inventive vertical cutting unit of a harvester is formed in the present embodiment as a rapeseed knife and has, as in the 1 and 2 shown, a base frame 1 as well as a cutting knife 2 on, with the cutting knife 2 vertically to the base frame 1 arranged and capable of performing linear cutting movements.

The base frame 1 further comprises means for connecting the vertical cutting unit with the harvester, wherein in the interest of clarity, the representation of the connecting means and the harvester has been omitted.

The required driving force for providing the cutting movements is presently by a motor 3 provided and one with the engine 3 and the cutting knife 2 connected transmission unit 4 on the cutting knife 2 transfer.

The motor 3 and the transmission unit 4 are in 2 shown schematically, the engine 3 present as a hydraulic motor and the transmission unit 4 are designed as a lever mechanism and wherein the transmission unit 4 is designed so that this is a rotational movement of the engine 3 in a linear drive movement of the cutting blade 2 implements.

How the particular 2 it can be seen, the arrangement of the engine takes place 3 in a lower area of the cutting blade 2 on the base frame 1 , where the engine 3 in the present case of the base frame 1 is received and dressed and thus particularly advantageous against external influences by dirt or crop residues is protected.

In this way, the vertical cutting unit in the present case can be made particularly light and can be provided at economical cost and thus at the same time cost.

LIST OF REFERENCE NUMBERS

1

basic frame

2

cutting blade

3

engine

4

transmission unit

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202010008037 U1 [0004]

Claims (4)

Vertical cutting unit of a harvester, comprising a base frame ( 1 ), a cutting knife ( 2 ), a motor ( 3 ) and a transmission unit ( 4 ), the base frame ( 1 ) Means for connecting the vertical cutting unit with the harvester and wherein on the base frame ( 1 ) the cutting knife ( 2 ), the motor ( 3 ) and the transmission unit ( 4 ) are arranged, and wherein the cutting blade ( 2 ) vertically on the base frame ( 1 ) and is capable of performing linear cutting movements, and wherein by means of the motor ( 3 ) a driving force can be provided, and wherein the transmission unit ( 4 ) with the engine ( 3 ) and the cutting blade ( 2 ) and wherein by means of the transmission unit ( 4 ) the driving force from the engine ( 3 ) on the cutting blade ( 2 ) is transferable, characterized in that the engine ( 3 ) in a lower portion of the cutting blade ( 2 ) on the base frame ( 1 ) is arranged. Vertical cutting unit according to claim 1, characterized in that the transmission unit ( 4 ) with the cutting knife ( 2 ) in a central region of the cutting blade ( 2 ) connected is. Vertical cutting unit according to claim 1, characterized in that the engine ( 3 ) is designed as a hydraulic motor. Vertical cutter according to claim 1 or 2, characterized in that the engine ( 3 ) provides the driving force as a linear movement.

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