DE1887533U - Fall arrest device for an additional agricultural device that can be alternately coupled to a tractor - Google Patents

Description

RA.775 8U * -2.12.63

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Safety gear for alternating with a pulling, machine detachable agricultural attachment

The utility model "refers to. A safety gear for an agricultural accessory that reciprocates with a can be coupled to a tractor equipped with an attached reversible plow, such as a reversible or reversible plow. Such attachments, especially harrows, are uncoupled from the tractor at the end of the purchase and taken away again after the tractor has turned.

The safety gears required for this are known and have been trained differently. Have as beneficial Such safety gears have been found in which the safety gear is attached to the accessory, irhing on the Zugma chine, advantageous A driving hook is attached to the part of the attachment that can be raised and lowered, which is attached at the start of the operation hooks into the safety gear of the additional device. In this type of safety gear, it is known that on each end face of the Additional device to arrange a pivotable double-armed lever in the horizontal plane, the long lever arm at the free end as a catch hook is formed and the short lever arm is connected to a tension spring attached to the device frame, which each free catch hook holds in the catching position.

With the hiring according to the utility model, soll.diLe task is solved be to use an additional device with such a trained safety device optionally for a tractor, its attached The plow has one, two or more blades »

Firing according to the utility model consists in the fact that the

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stand of the IPanghakens τοπ of the longitudinal axis of symmetry of the additional device is variable. This can be done in a number of ways. In addition to a variable length of the lever arm carrying the catch hook, the innovation proposes that the angular position of the lever arm carrying the long hook relative to the longitudinal axis of symmetry of the device can be changed in the long position. This can be accomplished after the innovation characterized in that the fastening point of the small lever ^B spring arm acting on the tool frame is adjustable ..- Another possibility according to the innovation is that of the long lever arm and the short lever arm enclosing angle is variable .

The innovation according to the utility model is shown in the drawing in Exemplary embodiments shown, namely show:

Fig. 1 shows a tractor with an attachable and detachable

, .Additional device and attached plow in plan view;

Fig. 2 shows a safety gear on the additional device on a larger scale in plan view;

Fig. 3 another embodiment of a safety gear on a larger scale in plan view ;.

Fig. 4 a mounting of the Ifang hook on the long lever arm in. Top view.

In Fig. 1, the towing vehicle is 1. with its two rear wheels and 3 shown, on which a plow in known, not shown is quietly grown. For the sake of understanding: the novelty suffices the representation of the plowshares 4, 5 "and 6. With the lifting and The driving hook 7 is connected to the lowerable mounting frame, its projection c (Fig. 2) to avoid excessive eccentric tensile forces, which complicate the steering of the towing vehicle, as small as

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is kept possible. Daa additional device, a harrow, is denoted by 8, which is on the two end faces with long hooks 9a and 10a provided, in the horizontal plane pivotable levers 9 or. 10 carries.

The operation of such an arrangement is based on the following .vor. -

In the position shown, the driver hook 7 is with the long hook 9a coupled while the long hook 10a is still open while writing is held in the long position by the effect of leather.

First of all it is assumed that the plow with two shares 4 and 5 is busy. In this lall the tractor wheel 2 drives in the Open amphibians 11 formed in the previous operation, while the coulter 5 intersects the amphibians 12 that remained open. Bach termination This work step is the attachment with the plowshares and the driver hook is lifted, whereby it detaches itself from the long hook 9a, so the additional device 8 remains uncoupled. It goes also the long hook 9a in the long position, as shown in dashed lines. When the tractor is turned off, bike 3 moves into the open lurch 12 a., wherein the driving hook 7 pushes the long hook 9a aside, while continuing to take the long hook 10a and the harrow 8 pulls onto the new strip of soil to be worked.

However, if the same towing vehicle 1 is used to plow three furrows, Then the open lurche 13, indicated by dashed lines, is created in the After the work process is completed, the wheel "3" of the towing vehicle 1 'moves in. The driver hook 7 can in this lall the long hook 10a do not take, "because the pivot lever 10 is too short. Will, however the pivot levers 9 and 10, as shown in dashed lines, longer

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executed j. then the catch hook would be ok "with two-blade operation get into the driving range of the wheel 3 traveling in the furrow 12, which depresses the catch hook, so that the coupling process * does not occur, because the driver hook 7 slides over the "catch hook.

To remedy this deficiency, the innovation provides the embodiments of the catching device according to FIGS. 2, 3 and 4. ! fold Fig. 1 is connected to the - liftable and lowerable part 1a of the towing vehicle 1 of the driving hook 7, which is coupled to the catch hook 9a, which is arranged at the end of the longer lever arm 9 ^{1 of} the two-armed lever 9. The latter is pivotally mounted on the frame of the additional device 8 about the pivot pin 14 .und has a shorter lever arm 9 ', at the end of which a tension spring 15 engages, whose.anderes end in the lever arm. 9 is at right angles to the longitudinal axis of symmetry of the device 8 in the catch position, as is shown in solid lines on the lever arm 10 arranged in the same way on the other end of the device 8. The extension of the catch hook 9a or 10a then corresponds to the dimension a and is suitable for the aforementioned three-furrow operation.

In two-blade operation, the spring 15 is in a different fastening hole des .Part 16 hooked, so that the lever 9 or 10 in the catch position _ .. at an angle to the symmetry along the axis of the device 8 are held. This ^ position is. in Fig. 2 for the lever in dash-dotted lines. Lines shown. The projection of the catch hook 10a is correspondingly smaller and corresponds to dimension b. At this Arrangement can be worked with a two-furrow plow without that the coupling process is endangered.

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According to Fig. 3, the short lever arm 10 '' is provided with a segment piece, and the longer lever arm 1.0 'is 10 ^{liters compared to the shorter lever arm!} angle adjustable. In order to achieve the different angular position of the lever arm 10 'shown in Fig. 2, the latter? with the segment piece 17 through .Steckstifte or the like. connected to the bend 17 in the appropriate angular position.

According to Fig. 4- the longer lever arm 10 'consists of two telescopic telescoping parts, whose total from charge by inserted into the indicated holes 18 pins, or can be changed by screw connection. For this, too, the distance a or b can be maintained for two- or three-furrow operation will.

Protection claims:.

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Claims (4)

A -.RA.775 81V-2.12 P f! υ gf α brik L e mk e n, AI pen Letter from: to ·. Leaf: _ g _ S chut ζ s, - η s ρ rüche 1 «! Safety gear for an alternating with an attached Reversible plow tractor detachable agricultural Additional device that has a double-armed lever that can be pivoted in a horizontal plane on each face, the longer one of which Lever arm is designed as a long hook at the free end and its short lever arm is connected to a tension spring attached to the device frame is that holds the free long hook in longitudinal division, characterized ,, that the distance of the long hook (9a, 1Qa) of the longitudinal axis of symmetry of the device (8) is variable. 2. Safety device according to claim 1, characterized in that the angular position of the lever arm carrying the long hook (9a, TOa) (9 or 10) to the longitudinal axis of symmetry of the device (8) in the long position is changeable. ' 3 »long device according to claim 2, characterized in that the fastening point of the tension spring (15) on the device frame (8) is adjustable * 4. Long device according to claim 2, characterized in that the angle enclosing the long lever arm (9 ' ₅ "10') and the short lever arm (9 ¹ S 10") can be changed »