FR2560738A1 - BRAKING AND RETAINING DEVICE FOR THE OSCILLATING BAR WITH A TIP OF A BALLING PRESS - Google Patents

Abstract

A. BRAKING AND RETAINING DEVICE FOR THE TIP SWING BAR OF A PRESS TO BE BALE. B. CHARACTERIZED IN THAT, BELOW A PRESSURE DUCT 1, IS PROVIDED, INSIDE A HOUSING 6, A STOP 7, LOADED BY SPRING, AND PRE-STRESSED, WHICH, THROUGH A LEVER 10, ARTICULATED IN FRONT OF HOUSING 6, AGAINST WHICH IS APPLIED, AT THE REAR, A SLIDING PART 13 PROVIDED ON AN OSCILLATING TUBE 14, IS IN THE STATE OF PRE-STRESSING IN THE TERMINAL POSITION OF THE SWING BAR AT POINT 2 C. STRAW AND HAY BALLS.

Description

2560T38

  Braking and retaining device for the bar

  oscillating tip of a bale baler ".

  The invention relates to a braking device for the oscillating bar with the tip of a baling press, in particular a high-pressure press.

  fast-running for straw and hay.

  The oscillating bar with equipped point

  pointed jaws of the binder must, during the operation

  pressing, have its fixation secured in its posi-

  the pressure line in such a way that, under the effect of any shaking, the

  tips can not arrive automatically in the

  they are destroyed as a result of faulty assignment of compression pistons. In order to slow down the pivoting movement of the bar

  oscillating force and to ensure its fixation in its

  outside the pressure duct, there is already a

braking devices.

  This is how are known for example,

  devices in which, by means of disc brakes

  mounted on the binder shaft and the oscillating bar

  te to point, the rotational movement of the drive

  oscillation of the crank and the movement of pivots-

  of the oscillating bar are braked thus causing an automatic locking of this drive in connection with

  the switching device. There, the hand crank

  of the oscillating bar, integral with the switching device, protrudes a little, at overspeed of rotation, the lower point, so that its connecting rod, due to the gravitational force of the oscillating bar, exerts

  pressure on the crank stopped in the direction of

ment.

  Since at the time of the

  When the rotation crank is rotated beyond the lower point, there is a sudden reversal of the pivoting movement of the oscillating bar, which absorbs the residual rotational energy of the shaft of the binder. Another type of braking device is described in DE-AS 11 60 687; braking action

  is obtained by means of an articulated brake arm

  on the tilting beam and by means of spring-loaded brake shoes provided at the

  side wall of the pressure conduit. The brake arm

  in the middle there is an enlargement and at its ends the thickness of normal material, so that at the end positions a weak braking action results

  and, in the middle zone, a strong braking action.

  This braking action in the median zone does not allow

  not to ensure sufficient fixation of the

  where the pointed jaws of the binder are located

outside the pressure line.

  A fixing of the oscillating bar by automatic locking of the oscillation drive

  crank is no longer possible in the speed zone.

  increased rotation, because the reversal of motion

  of rotation does not occur as quickly, in

  its mass inertia, and thus is prevented a continuation of rotation of the crank drive far beyond the lower point. A disadvantage is the incomplete decrementing of the switching device, which leads to strong coupling elements

wear and defects.

  The object of the invention is to create a

  positive braking and retaining action of the oscillating bar with a tip which makes it possible, by using fast-acting high-pressure presses, to obtain a safe end position, a braking action force and a reduction of

  the wear of the coupling elements.

  The object of the invention is therefore to provide a braking and holding device, for a baling press, which strongly brakes the tilting bar in its end position, holds it under prestressing and accelerates it. during the

start of movement that starts again.

  The invention concerns, for this purpose, a braking and retaining device characterized in that, below a pressure duct, is disposed inside a housing, a stop loaded by spring, and prestressing, which, through a

  lever, articulated in front of the housing, against which

  plique, a rear sliding part provided on an oscillating tube, is in the state of prestress in the

  end position of the tilting bar.

  This device can be further characterized in that the stop is urged by a spring

  relative to the pressure line and, against its frontier face,

  tale, apply a set screw, mounted on the lever,

  irrespective of the terminal position of the oscil-

lante.

  The device is characterized, on the other hand, in that on the lever, on the face facing the oscillating tube is mounted a brake lining which, with the sliding part, shortly before reaching the end position of the oscillating bar,

forms a rubbing couple.

  For this purpose, a lever attached to the pressure conduit and provided with a brake lining is mounted in a support bearing with a stop. The lever is applied,

  by the adjusting screw, against the stop, and after the

  coupling of the mechanical drive of the switching device, however still before reaching the lower point of the crank pivot of the drive of the shaft of the binder, the braking action starts to

  practice on the tilting bar. A room

  smoothing, mounted on the oscillating tube, then slides on the brake lever subjected to high spring load,

  and in a very small relative movement on the gar-

  brake, temporary braking takes place,

highly progressive.

  A short continued rotation of the crank beyond the lower point is determined by

  the rotational energy of all the elements fixed on the

  binder and is reinforced by the connecting rod as well as

  through the oscillating bar subjected to

  constraint. As a result, the switching device is completely disengaged and the position of the crank set efficiently, since the oscillating bar is constantly under spring preload during

  that it occupies its terminal position.

  Beside the advantage of a blocking on,

  there is the positive effect that in the new start-

  rage, this stored energy becomes free and thus increases the power of training. This effect exerts a

  advantageous influence on the wear of the elements of the training

  which, as a result, reach a useful life

  longer. On the other hand, it is advantageous that the

  braking devices act on the elements with the largest displaced mass and, as a result,

  the braking operation effectively without over-

sioning of the brake elements.

  The invention will be better understood using

  of the following description and the accompanying drawings represent-

  as an exemplary embodiment of the invention, drawings in which: - Figure 1 is a side view with

  oscillating bar with tip in the rest position.

  - Figure 2 is a side view with

  oscillating bar with point in the braking position

  Cante. On a presser duct 1 is mounted an oscillating bar with a point 2, connected via

  from a connecting rod 3 to a crank 4. This is mounted

  same, as a drive for the oscillating bar 2, on a shaft drive 5 of the binder. Below the pressure duct 1 is provided, in the radius of the oscillating bar, a housing 6 for a stop 7, which is placed under prestressing, by means of a spring 8, with respect to the pressure duct 1. The stop 7 is in contact

  a lever 10 by means of a set screw 9.

  Behind the articulation of the lever 10 is arranged a

  annex 11, which limits its pivoting movement.

  On one side of the lever 10 located opposite the oscillating bar 2 is bonded a brake lining 12, which is welded with a sliding member 13 to an oscillating tube 14 and forms a frictional torque in the

  end position of the oscillating bar. During the movement

  behind this oscillating bar 2, the piece

  13 reaches the brake lining 12 of the lever 10 and presses it against the abutment 7, which due to the

  high spring stiffness, strongly slows the oscil-

tip lante 2.

  This occurs when the mani-

  4 has reached the lowest zone of the circular path, even before the extended position with the connecting rod 3. In order to adapt the spring force to the end position, influenced by construction tolerances, of the oscillating bar 2, it is necessary to have

  on the lever 10 an adjusting screw 9 already mentioned.

  The very weak continuation of rotation beyond this point of the crank is carried out under the action of the elements

  rotating on the shaft drive 5 of the binder.

  The oscillating bar 2, prestressed, pushes, via the connecting rod 3, the crank

  4 in the terminal position. This is reached when

  that a switching pawl 15 attached to the crank 4 comes

  apply at one of its ends

  it is a switching arm 16 and its end equipped with a roller 17 has pivoted out of the zone of displacement of a drive member 18 and is applied against a hub 19

crank 4.

RE V ENDICATIO NS S

  1) Braking and retaining device for the oscillating bar with the tip of a baling press, by means of a friction brake acting on the shaft of the binder or the oscillating bar, characterized in that,

  below a pressure line (1), is arranged, at the

  interior of a housing (6), a stop (7) loaded by

  fate, and prestressing, which, via a lever (10), hinged in front of the housing (6), against which applies, at the rear, a slider (13)

  provided on an oscillating tube (14), is in the state of pre-

  constraint in the terminal position of the oscillating bar

to point (2).

  2) Device according to claim 1, characterized in that the stop (7) is biased by a spring (8) relative to the pressure pipe (1) and against

  its front face, an adjusting screw (9),

  on the lever (10), irrespective of the horizontal position

of the oscillating bar (2).

  3) Device according to one or the other

  claims 1 and 2, characterized in that, on the

  lever (10), on the face facing the oscillating tube (14) is mounted a brake lining (12), which, together with the slider (13), shortly before reaching the end position of the oscillating bar (2), forms a

rubbing couple.