DE1632814A1 - Rear mower with spring relief for the cutter bar and swivel arm - Google Patents

Description

7.11 μ ^ tffi n njn.ftur tfoiiptqnm. M 75 Qciti JTJ./Utc and MoQ ff / Friedrich Mörtl "078 Gemünden / M *» den 12 * 1.68

Ileck-Mftiiwerk wit spring relief from Cutter bar and swivel arm.

The invention relates to the arrangement of a relief spring, which makes it easier to lift and swing the cutter bar up, especially if your cutter bar is a rotary mower acts.

The main name Idling M 75 9Üb IIl / ^ 5c has the arrangement of a Contents spring, which relieves the weight of the rotary cutter bar in order to avoid clogging.

However, the spring does not make it easier, or only to a limited extent, to raise the cutter bar in the transport position.

However, due to the heavy weight of the rotary mower cutter bar, the tractor driver cannot be expected to do it by hand

to fold up into the transport position. Cumbersome lifts were therefore used.

The invention now shows a solution as to how folding it up into the vertical can be facilitated. She suggests on that To mount the swivel arm of the mower a tension spring that engages a lever of the cutter bar.

Figs. I and II show an exemplary embodiment of the invention.

The support frame of the mower is mounted on the three-point linkage of the tractor 1. The pivot arm k, in which the rotary cutter bar and axis of rotation 6 are articulated, is mounted pivotably at the pivot point 3 of the support frame.

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On the swivel arm 4 is on the one hand on the bearing block 7 and on the other hand, the tension spring 9 is arranged on the lever 3.

The articulation point 10 on the lever 3 can be chosen so that the spring exerts practically no torque on the cutter bar when the Mähbaiken is lowered into the mowing position. As a result of the high Weight of the rotary mower, however, it can be desirable that the spring contributes to the relief of the load.

In this case, the spring can also be divided into labor engage a lever arm on the cutter bar.

In Fig * I, for example, the chain ti is provided, which is applied to the cutter bar transmission and thus a certain one Maintains distance from pivot point 6. This is a desired one Retain torque even in working position.

If the cutter bar is raised vertically in the transport division, see Fig. II, the spring 9 enables a slight lifting due to its corresponding articulation on the lever 3.

An auxiliary spring engages in the main application M 75 988 IIl / ^ 5c on a bell crank to reduce the load on the floor.

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By means of the spring 9, a relief can already be achieved in the outer region of the cutter bar. The spring proposed in the main application therefore no longer has to attack the lever, it is sufficient if it acts directly on the swivel arm k. This can be seen in Figs. I and II.

BAD Cv «: c

00988 ~ 7 ^ Ö299

Claims (3)

16328H claims 1) Rear mower with spring relief for the cutter bar characterized in that am.Schwenkarm a spring mounted iat which is attached to a lever Tues Cutter bar (5) attacks. ;>) Lleck-MUhwerk ta it spring suspension according to claim characterized in that the lever (8) arranged to i _e t in that in Mähstellunc the spring tensioned position despite any torque exerts on the cutter bar. 3) Rear mower with Fedaresrilastunt, according to claim 1, characterized in that the spring (9) is arranged on the swivel arm 4o that it also exerts a slight impact on the cutter bar in the working position and thus relieves the outer area of the cutter bar in the working position. Rear mower with spring relief according to claim 1, characterized in that for the spring (9) a further spring is arranged between the support frame (2) and the swivel arm (k) . 009887/0299 Lee r side