DD282836A5 - PRESSURE VALVE ADJUSTMENT FOR BALE PRESSES - Google Patents

Abstract

The invention relates to a Preszklappenverstellung for balers. In a press jaw adjustment for balers with rectangular Preszkanalquerschnitt in which three press flaps are gleichmaeszig adjusted in two directions, a production-efficient solution to be created with only one working cylinder. For this purpose, two-armed angle levers (10, 10) are articulated on both sides of a fixed floor (5). Angle levers (13; 13) are also articulated on both sides on the upper press flap (7), the angle levers (10; 13; 10; 13) of each side being connected by a coupling (14; 14). Under the floor (5) sits between the angle levers (10; 10) a working cylinder * The upper angle levers (13; 13) each have a roller (15; 15), with which they are approximately centrally on the side Prezklappen (8; 8) issue. Fig. 2 {baler; Preszklappen; Adjustment; Working cylinder; Crank lever; coupling; Role; Arrangement}

Description

angeienkt each a coupling, on the other hand mii each connected to an upper, two-armed angle lever articulated. The upper angle lift! are hinged to the upper pressure flap and the inner arms of the upper angle lever are each about a RoIIa in a known manner approximately centrally in operative connection with the side pressure flaps.

When retracting the hydraulic power cylinder, the movement is transmitted via the lower angle lever and the coupling on the upper angle lever. The arms with the rollers thereby pivot inwards and press the lateral press flaps inwards against the bale located in the pre-channel or between the press flaps. At the same time, the upper angle levers are thereby displaced in their position by the counterforce arising from the bale, so that the upper press flap is moved downwards against the bale. When the hydraulic working cylinder is extended, the press flaps are pivoted outwards in the opposite direction.

According to the invention, it is expedient that in this case between a fixed upper carrier and a Quctraverse the upper PreSklappe, which is arranged above the Oberträgers. Compressed springs are clamped.

The solution according to the invention, the lower Winkolhebel and the coupling are primarily claimed only on train. When opening the press valves, the thrust forces are reduced by the compression springs. Thus, the components can be made relatively small and lightweight. At the same time accounts for more transmission elements, so that the proposed solution is simplified manufacturing technology and the cost of materials has been reduced. To E egrenzung the adjustment, it is also useful in a known manner that in the cross-beam, the upper angle small gelagr rt and are attached to these attacks.

embodiment

The invention will be explained in more detail with reference to an exemplary embodiment. In the accompanying drawings shows:

Fig. 1: a side view of the rear part of a press channel of a rectangular block baler, Fig. 2: a cross section through the press channel height of the Preßklappenverstellung without underlying parts in the open

State and Fig. 3: a cross section as in Fig. 2, but in a pivoted state.

A not shown in detail Quadergroßballenp.-esse has a machine frame fixed rectangular PreßKanal 1 and subsequently to an adjustable cross-section, the rear part of the Preßkanales 1 '. The fixed press channel 1 terminates in a frame 2. The frame 2 is adjoined in the corners according to the cross section of the press channel 1 at an angle rails 3, which are stabilized at the rear end via a connecting frame 4. A bottom 5 is fixedly inserted between the frame 2 and the connection frame 4. About hinges 6; 6 'are also on the frame 2, an upper pressure flap' / and side pressure flaps 8; 8 'hinged so that their front ends are in the extension of the walls dos fixed press channel 1. In the rear region of the press flaps 7; 8,8 'the adjusting mechanism is arranged. For this purpose, a cross member 9 is connected from below to the bottom 5 and the lower bracket rails 3. In the ends of the cross member 9 are downwardly and outwardly pointing two-armed angle lever 10; 10 ', wherein between the downwardly facing arms of the angle lever 10; 10 ', a hydraulic cylinder 11 is articulated. At the upper press flap 7, a cross-beam 12 is welded above the upper angle rails 3, the portal-like, the upper angle rails 3 and the side press flaps 8; 8 'surrounds. In the ends of the crossbar 12 are further two-armed, downwardly and outwardly pointing angle lever 13; 13'gelagert. Between the outer arms of the angle lever 10; 13bzw. 10 '; 13 'each side is a coupling 14; 14 'hinged.

The lower arms of the upper angle levers 13, 13 'have rollers 15 at their ends; 15 ', with which they on a guideway 16; 16 'of the side pressure flaps 8; 8 'lie approximately centrally. Further, above the angle rail 3 in cross-beam 12 adjusting spindles 17; 17'eingesetzt, which is an abutment 18 for compression springs 19; 19'besitzen. The compression springs 19; 19 ', on the other hand, are supported on the upper angle rails 3.

As shown in Fig. 2 and Fig. 3, the press flaps 7; 8th; 8 ' between e' ^ tr outer layer and an inner layer steplessly pivotable, wherein in the outer layer of the press flaps 8; 8 'and the upper press flap 7 and the bottom 5 are parallel to each other. In the innertin position, the cross section of the press channel 1 'tapers strongly towards the rear. The outer layer is thereby by / nschläge20; 20'fixiert, which are used in the cross-beam 12 and to which the upper angle lever 13; 13 'create.

Claims (3)

1. Preßklappenverstellung for balers, especially square large balers, in which three press valves are adjusted in two directions, with an upper pressure flap in the vertical direction and side pressure flaps are mounted in the horizontal direction pivotally mounted on the pressing channel and the bottom is firmly connected to the pressing channel and a drive unit hydraulic working cylinder is used, characterized in that on the bottom (5) two-armed angle lever (10; 10 ') are mounted on both sides, between the lower arms of the hydraulic working cylinder (11) is articulated below the bottom (5), on the outer arms of the Angle lever (10, 10 ') is articulated in each case a coupling (14, 14'), on the other hand with an upper two-armed angle lever (13, 13 ') is hingedly connected, wherein the upper angle lever (13, 13') on the upper press flap (7) are articulated and the inner arms of the upper angle lever (13, 13 ') via a respective roller (15, 15') in b ekannten way approximately centrally with lateral pressure flaps (8; 8 ') are in operative connection. 2. Preßklappenverstellung according to claim 1, characterized in that between a fixed angle rail (3) and a crossbar (12) of the upper Preßklappe (7), which is arranged above the angle rails (3), compression springs (19, 19 ') are clamped. For this 3 pages drawings Field of application of the invention The invention relates to a mechanism for Preßklappenverstellung on agricultural balers, especially square large balers, in which three press valves are adjusted in two directions. Characteristic of the known state of the art For agricultural balers already exist various solutions for adjusting three movable press valves. The press flaps form the rear part of the Preßkanales, are connected to the fixed part of the Preßkanales via joints and consist of an upper, pivotable in the vertical direction press flap and horizontally pivotable lateral press flaps. In US-PS 4037528 a mechanism is described, with which an adjustment in the two said Richtßn is simultaneously possible. For this purpose, two-armed angle lever are articulated on both sides on the fixed floor and on the upper press flap. On the outer arms of the angle lever each side engages a drive unit, in particular a hydraulic cylinder to. The inner arms operate on rollers, the side press flaps. This solution requires high production costs, since two synchronously operating drive units are required. According to European Patent Application 0152 970 another solution is known which requires a drive unit for adjustment. As a drive unit, a hydraulic cylinder is arranged transversely to the pressing channel above the upper press flap. The hydraulic cylinder is hinged on both sides to triangular levers, which are supported with their inner ends on rollers on the upper press flap. At the outer ends of the lever wings are hinged, on the other hand, are pivotally mounted on the fixed Roden. Centered on the wings, the side pressure flaps are also hinged pivotally. Although this solution reduces the number of drive means, but involves a considerable effort for the management of the control members and the mastery of the kinematically induced large forces and bending moments by correspondingly large-volume dimensioning of the components. This leads to a very high cost of materials. Object of the invention The invention has the goal to provide a baler for baling, in which the production costs and the use of materials are reduced. Explanation of the essence of the invention The invention is based on the object, a Preßklappenverstellung for balers, especially square large balers, in which three press flaps are adjusted in two directions, with an upper Preßklappc in the vertical direction and side pressure flaps are mounted in the horizontal direction pivotally mounted on the pressing channel and the bottom firmly with the compression channel is connected and as a drive unit, a hydraulic cylinder is used to create, in which the stress of the components takes place so that material and production-intensive support elements are limited. According to the invention this is achieved by two-armed angle lever are mounted on both sides of the bottom, between the lower arms of a hydraulic cylinder is mounted below the ground. On the outer arms of the angle lever is